// Copyright 2012 the V8 project authors. All rights reserved. // Redistribution and use in source and binary forms, with or without // modification, are permitted provided that the following conditions are // met: // // * Redistributions of source code must retain the above copyright // notice, this list of conditions and the following disclaimer. // * Redistributions in binary form must reproduce the above // copyright notice, this list of conditions and the following // disclaimer in the documentation and/or other materials provided // with the distribution. // * Neither the name of Google Inc. nor the names of its // contributors may be used to endorse or promote products derived // from this software without specific prior written permission. // // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. #include #include "src/v8.h" #include "src/api.h" #include "src/compilation-cache.h" #include "src/debug/debug-interface.h" #include "src/debug/debug.h" #include "src/deoptimizer.h" #include "src/frames.h" #include "src/utils.h" #include "test/cctest/cctest.h" using ::v8::internal::EmbeddedVector; using ::v8::internal::Object; using ::v8::internal::Handle; using ::v8::internal::Heap; using ::v8::internal::JSGlobalProxy; using ::v8::internal::Code; using ::v8::internal::Debug; using ::v8::internal::StackFrame; using ::v8::internal::StepAction; using ::v8::internal::StepIn; // From StepAction enum using ::v8::internal::StepNext; // From StepAction enum using ::v8::internal::StepOut; // From StepAction enum using ::v8::internal::Vector; using ::v8::internal::StrLength; // Size of temp buffer for formatting small strings. #define SMALL_STRING_BUFFER_SIZE 80 // --- H e l p e r C l a s s e s // Helper class for creating a V8 enviromnent for running tests class DebugLocalContext { public: inline DebugLocalContext( v8::Isolate* isolate, v8::ExtensionConfiguration* extensions = 0, v8::Local global_template = v8::Local(), v8::Local global_object = v8::Local()) : scope_(isolate), context_(v8::Context::New(isolate, extensions, global_template, global_object)) { context_->Enter(); } inline DebugLocalContext( v8::ExtensionConfiguration* extensions = 0, v8::Local global_template = v8::Local(), v8::Local global_object = v8::Local()) : scope_(CcTest::isolate()), context_(v8::Context::New(CcTest::isolate(), extensions, global_template, global_object)) { context_->Enter(); } inline ~DebugLocalContext() { context_->Exit(); } inline v8::Local context() { return context_; } inline v8::Context* operator->() { return *context_; } inline v8::Context* operator*() { return *context_; } inline v8::Isolate* GetIsolate() { return context_->GetIsolate(); } inline bool IsReady() { return !context_.IsEmpty(); } void ExposeDebug() { v8::internal::Isolate* isolate = reinterpret_cast(context_->GetIsolate()); v8::internal::Factory* factory = isolate->factory(); // Expose the debug context global object in the global object for testing. CHECK(isolate->debug()->Load()); Handle debug_context = isolate->debug()->debug_context(); debug_context->set_security_token( v8::Utils::OpenHandle(*context_)->security_token()); Handle global(Handle::cast( v8::Utils::OpenHandle(*context_->Global()))); Handle debug_string = factory->InternalizeOneByteString(STATIC_CHAR_VECTOR("debug")); v8::internal::JSObject::SetOwnPropertyIgnoreAttributes( global, debug_string, handle(debug_context->global_proxy()), v8::internal::DONT_ENUM) .Check(); } private: v8::HandleScope scope_; v8::Local context_; }; // --- H e l p e r F u n c t i o n s // Compile and run the supplied source and return the requested function. static v8::Local CompileFunction(v8::Isolate* isolate, const char* source, const char* function_name) { CompileRunChecked(isolate, source); v8::Local name = v8_str(isolate, function_name); v8::Local context = isolate->GetCurrentContext(); v8::MaybeLocal maybe_function = context->Global()->Get(context, name); return v8::Local::Cast(maybe_function.ToLocalChecked()); } // Compile and run the supplied source and return the requested function. static v8::Local CompileFunction(DebugLocalContext* env, const char* source, const char* function_name) { return CompileFunction(env->GetIsolate(), source, function_name); } // Is there any debug info for the function? static bool HasDebugInfo(v8::Local fun) { Handle f = Handle::cast(v8::Utils::OpenHandle(*fun)); Handle shared(f->shared()); return shared->HasDebugInfo(); } // Set a break point in a function with a position relative to function start, // and return the associated break point number. static int SetBreakPoint(v8::Local fun, int position) { i::Handle function = i::Handle::cast(v8::Utils::OpenHandle(*fun)); position += function->shared()->start_position(); static int break_point = 0; v8::internal::Isolate* isolate = function->GetIsolate(); v8::internal::Debug* debug = isolate->debug(); debug->SetBreakPoint( function, Handle(v8::internal::Smi::FromInt(++break_point), isolate), &position); return break_point; } // Set a break point in a function using the Debug object and return the // associated break point number. static int SetBreakPointFromJS(v8::Isolate* isolate, const char* function_name, int line, int position) { EmbeddedVector buffer; SNPrintF(buffer, "debug.Debug.setBreakPoint(%s,%d,%d)", function_name, line, position); buffer[SMALL_STRING_BUFFER_SIZE - 1] = '\0'; v8::Local value = CompileRunChecked(isolate, buffer.start()); return value->Int32Value(isolate->GetCurrentContext()).FromJust(); } // Set a break point in a script identified by id using the global Debug object. static int SetScriptBreakPointByIdFromJS(v8::Isolate* isolate, int script_id, int line, int column) { EmbeddedVector buffer; if (column >= 0) { // Column specified set script break point on precise location. SNPrintF(buffer, "debug.Debug.setScriptBreakPointById(%d,%d,%d)", script_id, line, column); } else { // Column not specified set script break point on line. SNPrintF(buffer, "debug.Debug.setScriptBreakPointById(%d,%d)", script_id, line); } buffer[SMALL_STRING_BUFFER_SIZE - 1] = '\0'; { v8::TryCatch try_catch(isolate); v8::Local value = CompileRunChecked(isolate, buffer.start()); CHECK(!try_catch.HasCaught()); return value->Int32Value(isolate->GetCurrentContext()).FromJust(); } } // Set a break point in a script identified by name using the global Debug // object. static int SetScriptBreakPointByNameFromJS(v8::Isolate* isolate, const char* script_name, int line, int column) { EmbeddedVector buffer; if (column >= 0) { // Column specified set script break point on precise location. SNPrintF(buffer, "debug.Debug.setScriptBreakPointByName(\"%s\",%d,%d)", script_name, line, column); } else { // Column not specified set script break point on line. SNPrintF(buffer, "debug.Debug.setScriptBreakPointByName(\"%s\",%d)", script_name, line); } buffer[SMALL_STRING_BUFFER_SIZE - 1] = '\0'; { v8::TryCatch try_catch(isolate); v8::Local value = CompileRunChecked(isolate, buffer.start()); CHECK(!try_catch.HasCaught()); return value->Int32Value(isolate->GetCurrentContext()).FromJust(); } } // Clear a break point. static void ClearBreakPoint(int break_point) { v8::internal::Isolate* isolate = CcTest::i_isolate(); v8::internal::Debug* debug = isolate->debug(); debug->ClearBreakPoint( Handle(v8::internal::Smi::FromInt(break_point), isolate)); } // Clear a break point using the global Debug object. static void ClearBreakPointFromJS(v8::Isolate* isolate, int break_point_number) { EmbeddedVector buffer; SNPrintF(buffer, "debug.Debug.clearBreakPoint(%d)", break_point_number); buffer[SMALL_STRING_BUFFER_SIZE - 1] = '\0'; CompileRunChecked(isolate, buffer.start()); } static void EnableScriptBreakPointFromJS(v8::Isolate* isolate, int break_point_number) { EmbeddedVector buffer; SNPrintF(buffer, "debug.Debug.enableScriptBreakPoint(%d)", break_point_number); buffer[SMALL_STRING_BUFFER_SIZE - 1] = '\0'; CompileRunChecked(isolate, buffer.start()); } static void DisableScriptBreakPointFromJS(v8::Isolate* isolate, int break_point_number) { EmbeddedVector buffer; SNPrintF(buffer, "debug.Debug.disableScriptBreakPoint(%d)", break_point_number); buffer[SMALL_STRING_BUFFER_SIZE - 1] = '\0'; CompileRunChecked(isolate, buffer.start()); } static void ChangeScriptBreakPointConditionFromJS(v8::Isolate* isolate, int break_point_number, const char* condition) { EmbeddedVector buffer; SNPrintF(buffer, "debug.Debug.changeScriptBreakPointCondition(%d, \"%s\")", break_point_number, condition); buffer[SMALL_STRING_BUFFER_SIZE - 1] = '\0'; CompileRunChecked(isolate, buffer.start()); } // Change break on exception. static void ChangeBreakOnException(bool caught, bool uncaught) { v8::internal::Debug* debug = CcTest::i_isolate()->debug(); debug->ChangeBreakOnException(v8::internal::BreakException, caught); debug->ChangeBreakOnException(v8::internal::BreakUncaughtException, uncaught); } // Change break on exception using the global Debug object. static void ChangeBreakOnExceptionFromJS(v8::Isolate* isolate, bool caught, bool uncaught) { if (caught) { CompileRunChecked(isolate, "debug.Debug.setBreakOnException()"); } else { CompileRunChecked(isolate, "debug.Debug.clearBreakOnException()"); } if (uncaught) { CompileRunChecked(isolate, "debug.Debug.setBreakOnUncaughtException()"); } else { CompileRunChecked(isolate, "debug.Debug.clearBreakOnUncaughtException()"); } } // Change break on exception using the native API call. static void ChangeBreakOnExceptionFromAPI( v8::Isolate* isolate, v8::debug::ExceptionBreakState state) { v8::debug::ChangeBreakOnException(isolate, state); } // Prepare to step to next break location. static void PrepareStep(StepAction step_action) { v8::internal::Debug* debug = CcTest::i_isolate()->debug(); debug->PrepareStep(step_action); } static void ClearStepping() { CcTest::i_isolate()->debug()->ClearStepping(); } // This function is in namespace v8::internal to be friend with class // v8::internal::Debug. namespace v8 { namespace internal { // Collect the currently debugged functions. Handle GetDebuggedFunctions() { Debug* debug = CcTest::i_isolate()->debug(); v8::internal::DebugInfoListNode* node = debug->debug_info_list_; // Find the number of debugged functions. int count = 0; while (node) { count++; node = node->next(); } // Allocate array for the debugged functions Handle debugged_functions = CcTest::i_isolate()->factory()->NewFixedArray(count); // Run through the debug info objects and collect all functions. count = 0; while (node) { debugged_functions->set(count++, *node->debug_info()); node = node->next(); } return debugged_functions; } // Check that the debugger has been fully unloaded. void CheckDebuggerUnloaded(bool check_functions) { // Check that the debugger context is cleared and that there is no debug // information stored for the debugger. CHECK(CcTest::i_isolate()->debug()->debug_context().is_null()); CHECK(!CcTest::i_isolate()->debug()->debug_info_list_); // Collect garbage to ensure weak handles are cleared. CcTest::CollectAllGarbage(i::Heap::kFinalizeIncrementalMarkingMask); CcTest::CollectAllGarbage(Heap::kMakeHeapIterableMask); // Iterate the head and check that there are no debugger related objects left. HeapIterator iterator(CcTest::heap()); for (HeapObject* obj = iterator.next(); obj != NULL; obj = iterator.next()) { CHECK(!obj->IsDebugInfo()); CHECK(!obj->IsBreakPointInfo()); // If deep check of functions is requested check that no debug break code // is left in all functions. if (check_functions) { if (obj->IsJSFunction()) { JSFunction* fun = JSFunction::cast(obj); for (RelocIterator it(fun->shared()->code(), RelocInfo::kDebugBreakSlotMask); !it.done(); it.next()) { CHECK(!it.rinfo()->IsPatchedDebugBreakSlotSequence()); } } } } } } // namespace internal } // namespace v8 // Check that the debugger has been fully unloaded. static void CheckDebuggerUnloaded(v8::Isolate* isolate, bool check_functions = false) { v8::internal::CheckDebuggerUnloaded(check_functions); } // --- D e b u g E v e n t H a n d l e r s // --- // --- The different tests uses a number of debug event handlers. // --- // Source for the JavaScript function which picks out the function // name of a frame. const char* frame_function_name_source = "function frame_function_name(exec_state, frame_number) {" " return exec_state.frame(frame_number).func().name();" "}"; v8::Local frame_function_name; // Source for the JavaScript function which pick out the name of the // first argument of a frame. const char* frame_argument_name_source = "function frame_argument_name(exec_state, frame_number) {" " return exec_state.frame(frame_number).argumentName(0);" "}"; v8::Local frame_argument_name; // Source for the JavaScript function which pick out the value of the // first argument of a frame. const char* frame_argument_value_source = "function frame_argument_value(exec_state, frame_number) {" " return exec_state.frame(frame_number).argumentValue(0).value_;" "}"; v8::Local frame_argument_value; // Source for the JavaScript function which pick out the name of the // first argument of a frame. const char* frame_local_name_source = "function frame_local_name(exec_state, frame_number) {" " return exec_state.frame(frame_number).localName(0);" "}"; v8::Local frame_local_name; // Source for the JavaScript function which pick out the value of the // first argument of a frame. const char* frame_local_value_source = "function frame_local_value(exec_state, frame_number) {" " return exec_state.frame(frame_number).localValue(0).value_;" "}"; v8::Local frame_local_value; // Source for the JavaScript function which picks out the source line for the // top frame. const char* frame_source_line_source = "function frame_source_line(exec_state) {" " return exec_state.frame(0).sourceLine();" "}"; v8::Local frame_source_line; // Source for the JavaScript function which picks out the source column for the // top frame. const char* frame_source_column_source = "function frame_source_column(exec_state) {" " return exec_state.frame(0).sourceColumn();" "}"; v8::Local frame_source_column; // Source for the JavaScript function which picks out the script name for the // top frame. const char* frame_script_name_source = "function frame_script_name(exec_state) {" " return exec_state.frame(0).func().script().name();" "}"; v8::Local frame_script_name; // Source for the JavaScript function which returns the number of frames. static const char* frame_count_source = "function frame_count(exec_state) {" " return exec_state.frameCount();" "}"; v8::Local frame_count; // Global variable to store the last function hit - used by some tests. char last_function_hit[80]; // Global variable to store the name for last script hit - used by some tests. char last_script_name_hit[80]; // Global variables to store the last source position - used by some tests. int last_source_line = -1; int last_source_column = -1; // Debug event handler which counts the break points which have been hit. int break_point_hit_count = 0; int break_point_hit_count_deoptimize = 0; static void DebugEventBreakPointHitCount( const v8::Debug::EventDetails& event_details) { v8::DebugEvent event = event_details.GetEvent(); v8::Local exec_state = event_details.GetExecutionState(); v8::Local context = CcTest::isolate()->GetCurrentContext(); v8::internal::Isolate* isolate = CcTest::i_isolate(); Debug* debug = isolate->debug(); // When hitting a debug event listener there must be a break set. CHECK_NE(debug->break_id(), 0); // Count the number of breaks. if (event == v8::Break) { break_point_hit_count++; if (!frame_function_name.IsEmpty()) { // Get the name of the function. const int argc = 2; v8::Local argv[argc] = { exec_state, v8::Integer::New(CcTest::isolate(), 0)}; v8::Local result = frame_function_name->Call(context, exec_state, argc, argv) .ToLocalChecked(); if (result->IsUndefined()) { last_function_hit[0] = '\0'; } else { CHECK(result->IsString()); v8::Local function_name(result.As()); function_name->WriteUtf8(last_function_hit); } } if (!frame_source_line.IsEmpty()) { // Get the source line. const int argc = 1; v8::Local argv[argc] = {exec_state}; v8::Local result = frame_source_line->Call(context, exec_state, argc, argv) .ToLocalChecked(); CHECK(result->IsNumber()); last_source_line = result->Int32Value(context).FromJust(); } if (!frame_source_column.IsEmpty()) { // Get the source column. const int argc = 1; v8::Local argv[argc] = {exec_state}; v8::Local result = frame_source_column->Call(context, exec_state, argc, argv) .ToLocalChecked(); CHECK(result->IsNumber()); last_source_column = result->Int32Value(context).FromJust(); } if (!frame_script_name.IsEmpty()) { // Get the script name of the function script. const int argc = 1; v8::Local argv[argc] = {exec_state}; v8::Local result = frame_script_name->Call(context, exec_state, argc, argv) .ToLocalChecked(); if (result->IsUndefined()) { last_script_name_hit[0] = '\0'; } else { CHECK(result->IsString()); v8::Local script_name(result.As()); script_name->WriteUtf8(last_script_name_hit); } } // Perform a full deoptimization when the specified number of // breaks have been hit. if (break_point_hit_count == break_point_hit_count_deoptimize) { i::Deoptimizer::DeoptimizeAll(isolate); } } } // Debug event handler which counts a number of events and collects the stack // height if there is a function compiled for that. int exception_hit_count = 0; int uncaught_exception_hit_count = 0; int last_js_stack_height = -1; v8::Local debug_event_listener_callback; int debug_event_listener_callback_result; static void DebugEventCounterClear() { break_point_hit_count = 0; exception_hit_count = 0; uncaught_exception_hit_count = 0; } static void DebugEventCounter( const v8::Debug::EventDetails& event_details) { v8::DebugEvent event = event_details.GetEvent(); v8::Local exec_state = event_details.GetExecutionState(); v8::Local event_data = event_details.GetEventData(); v8::Local context = CcTest::isolate()->GetCurrentContext(); v8::internal::Debug* debug = CcTest::i_isolate()->debug(); // When hitting a debug event listener there must be a break set. CHECK_NE(debug->break_id(), 0); // Count the number of breaks. if (event == v8::Break) { break_point_hit_count++; } else if (event == v8::Exception) { exception_hit_count++; // Check whether the exception was uncaught. v8::Local fun_name = v8_str(CcTest::isolate(), "uncaught"); v8::Local fun = v8::Local::Cast( event_data->Get(context, fun_name).ToLocalChecked()); v8::Local result = fun->Call(context, event_data, 0, NULL).ToLocalChecked(); if (result->IsTrue()) { uncaught_exception_hit_count++; } } // Collect the JavsScript stack height if the function frame_count is // compiled. if (!frame_count.IsEmpty()) { static const int kArgc = 1; v8::Local argv[kArgc] = {exec_state}; // Using exec_state as receiver is just to have a receiver. v8::Local result = frame_count->Call(context, exec_state, kArgc, argv).ToLocalChecked(); last_js_stack_height = result->Int32Value(context).FromJust(); } // Run callback from DebugEventListener and check the result. if (!debug_event_listener_callback.IsEmpty()) { v8::Local result = debug_event_listener_callback->Call(context, event_data, 0, NULL) .ToLocalChecked(); CHECK(!result.IsEmpty()); CHECK_EQ(debug_event_listener_callback_result, result->Int32Value(context).FromJust()); } } // Debug event handler which evaluates a number of expressions when a break // point is hit. Each evaluated expression is compared with an expected value. // For this debug event handler to work the following two global varaibles // must be initialized. // checks: An array of expressions and expected results // evaluate_check_function: A JavaScript function (see below) // Structure for holding checks to do. struct EvaluateCheck { const char* expr; // An expression to evaluate when a break point is hit. v8::Local expected; // The expected result. }; // Array of checks to do. struct EvaluateCheck* checks = NULL; // Source for The JavaScript function which can do the evaluation when a break // point is hit. const char* evaluate_check_source = "function evaluate_check(exec_state, expr, expected) {" " return exec_state.frame(0).evaluate(expr).value() === expected;" "}"; v8::Local evaluate_check_function; // The actual debug event described by the longer comment above. static void DebugEventEvaluate( const v8::Debug::EventDetails& event_details) { v8::DebugEvent event = event_details.GetEvent(); v8::Local exec_state = event_details.GetExecutionState(); v8::Isolate* isolate = CcTest::isolate(); v8::Local context = isolate->GetCurrentContext(); v8::internal::Debug* debug = CcTest::i_isolate()->debug(); // When hitting a debug event listener there must be a break set. CHECK_NE(debug->break_id(), 0); if (event == v8::Break) { break_point_hit_count++; for (int i = 0; checks[i].expr != NULL; i++) { const int argc = 3; v8::Local string = v8_str(isolate, checks[i].expr); v8::Local argv[argc] = {exec_state, string, checks[i].expected}; v8::Local result = evaluate_check_function->Call(context, exec_state, argc, argv) .ToLocalChecked(); if (!result->IsTrue()) { v8::String::Utf8Value utf8(checks[i].expected); V8_Fatal(__FILE__, __LINE__, "%s != %s", checks[i].expr, *utf8); } } } } // This debug event listener removes a breakpoint in a function int debug_event_remove_break_point = 0; static void DebugEventRemoveBreakPoint( const v8::Debug::EventDetails& event_details) { v8::DebugEvent event = event_details.GetEvent(); v8::Local data = event_details.GetCallbackData(); v8::internal::Debug* debug = CcTest::i_isolate()->debug(); // When hitting a debug event listener there must be a break set. CHECK_NE(debug->break_id(), 0); if (event == v8::Break) { break_point_hit_count++; CHECK(data->IsFunction()); ClearBreakPoint(debug_event_remove_break_point); } } // Debug event handler which counts break points hit and performs a step // afterwards. StepAction step_action = StepIn; // Step action to perform when stepping. static void DebugEventStep( const v8::Debug::EventDetails& event_details) { v8::DebugEvent event = event_details.GetEvent(); v8::internal::Debug* debug = CcTest::i_isolate()->debug(); // When hitting a debug event listener there must be a break set. CHECK_NE(debug->break_id(), 0); if (event == v8::Break) { break_point_hit_count++; PrepareStep(step_action); } } // Debug event handler which counts break points hit and performs a step // afterwards. For each call the expected function is checked. // For this debug event handler to work the following two global varaibles // must be initialized. // expected_step_sequence: An array of the expected function call sequence. // frame_function_name: A JavaScript function (see below). // String containing the expected function call sequence. Note: this only works // if functions have name length of one. const char* expected_step_sequence = NULL; // The actual debug event described by the longer comment above. static void DebugEventStepSequence( const v8::Debug::EventDetails& event_details) { v8::DebugEvent event = event_details.GetEvent(); v8::Local exec_state = event_details.GetExecutionState(); v8::internal::Debug* debug = CcTest::i_isolate()->debug(); // When hitting a debug event listener there must be a break set. CHECK_NE(debug->break_id(), 0); if (event == v8::Break || event == v8::Exception) { // Check that the current function is the expected. CHECK(break_point_hit_count < StrLength(expected_step_sequence)); const int argc = 2; v8::Local argv[argc] = {exec_state, v8::Integer::New(CcTest::isolate(), 0)}; v8::Local context = CcTest::isolate()->GetCurrentContext(); v8::Local result = frame_function_name->Call(context, exec_state, argc, argv) .ToLocalChecked(); CHECK(result->IsString()); v8::String::Utf8Value function_name( result->ToString(context).ToLocalChecked()); CHECK_EQ(1, StrLength(*function_name)); CHECK_EQ((*function_name)[0], expected_step_sequence[break_point_hit_count]); // Perform step. break_point_hit_count++; PrepareStep(step_action); } } // Debug event handler which performs a garbage collection. static void DebugEventBreakPointCollectGarbage( const v8::Debug::EventDetails& event_details) { v8::DebugEvent event = event_details.GetEvent(); v8::internal::Debug* debug = CcTest::i_isolate()->debug(); // When hitting a debug event listener there must be a break set. CHECK_NE(debug->break_id(), 0); // Perform a garbage collection when break point is hit and continue. Based // on the number of break points hit either scavenge or mark compact // collector is used. if (event == v8::Break) { break_point_hit_count++; if (break_point_hit_count % 2 == 0) { // Scavenge. CcTest::CollectGarbage(v8::internal::NEW_SPACE); } else { // Mark sweep compact. CcTest::CollectAllGarbage(i::Heap::kFinalizeIncrementalMarkingMask); } } } // Debug event handler which re-issues a debug break and calls the garbage // collector to have the heap verified. static void DebugEventBreak( const v8::Debug::EventDetails& event_details) { v8::DebugEvent event = event_details.GetEvent(); v8::internal::Debug* debug = CcTest::i_isolate()->debug(); // When hitting a debug event listener there must be a break set. CHECK_NE(debug->break_id(), 0); if (event == v8::Break) { // Count the number of breaks. break_point_hit_count++; // Run the garbage collector to enforce heap verification if option // --verify-heap is set. CcTest::CollectGarbage(v8::internal::NEW_SPACE); // Set the break flag again to come back here as soon as possible. v8::Debug::DebugBreak(CcTest::isolate()); } } // Debug event handler which re-issues a debug break until a limit has been // reached. int max_break_point_hit_count = 0; bool terminate_after_max_break_point_hit = false; static void DebugEventBreakMax( const v8::Debug::EventDetails& event_details) { v8::DebugEvent event = event_details.GetEvent(); v8::Isolate* v8_isolate = CcTest::isolate(); v8::internal::Isolate* isolate = CcTest::i_isolate(); v8::internal::Debug* debug = isolate->debug(); // When hitting a debug event listener there must be a break set. CHECK_NE(debug->break_id(), 0); if (event == v8::Break) { if (break_point_hit_count < max_break_point_hit_count) { // Count the number of breaks. break_point_hit_count++; // Set the break flag again to come back here as soon as possible. v8::Debug::DebugBreak(v8_isolate); } else if (terminate_after_max_break_point_hit) { // Terminate execution after the last break if requested. v8_isolate->TerminateExecution(); } // Perform a full deoptimization when the specified number of // breaks have been hit. if (break_point_hit_count == break_point_hit_count_deoptimize) { i::Deoptimizer::DeoptimizeAll(isolate); } } } // --- M e s s a g e C a l l b a c k // Message callback which counts the number of messages. int message_callback_count = 0; static void MessageCallbackCountClear() { message_callback_count = 0; } static void MessageCallbackCount(v8::Local message, v8::Local data) { message_callback_count++; } // --- T h e A c t u a l T e s t s // Test that the debug info in the VM is in sync with the functions being // debugged. TEST(DebugInfo) { DebugLocalContext env; v8::HandleScope scope(env->GetIsolate()); // Create a couple of functions for the test. v8::Local foo = CompileFunction(&env, "function foo(){}", "foo"); v8::Local bar = CompileFunction(&env, "function bar(){}", "bar"); // Initially no functions are debugged. CHECK_EQ(0, v8::internal::GetDebuggedFunctions()->length()); CHECK(!HasDebugInfo(foo)); CHECK(!HasDebugInfo(bar)); EnableDebugger(env->GetIsolate()); // One function (foo) is debugged. int bp1 = SetBreakPoint(foo, 0); CHECK_EQ(1, v8::internal::GetDebuggedFunctions()->length()); CHECK(HasDebugInfo(foo)); CHECK(!HasDebugInfo(bar)); // Two functions are debugged. int bp2 = SetBreakPoint(bar, 0); CHECK_EQ(2, v8::internal::GetDebuggedFunctions()->length()); CHECK(HasDebugInfo(foo)); CHECK(HasDebugInfo(bar)); // One function (bar) is debugged. ClearBreakPoint(bp1); CHECK_EQ(1, v8::internal::GetDebuggedFunctions()->length()); CHECK(!HasDebugInfo(foo)); CHECK(HasDebugInfo(bar)); // No functions are debugged. ClearBreakPoint(bp2); DisableDebugger(env->GetIsolate()); CHECK_EQ(0, v8::internal::GetDebuggedFunctions()->length()); CHECK(!HasDebugInfo(foo)); CHECK(!HasDebugInfo(bar)); } // Test that a break point can be set at an IC store location. TEST(BreakPointICStore) { break_point_hit_count = 0; DebugLocalContext env; v8::HandleScope scope(env->GetIsolate()); v8::Debug::SetDebugEventListener(env->GetIsolate(), DebugEventBreakPointHitCount); v8::Local foo = CompileFunction(&env, "function foo(){bar=0;}", "foo"); // Run without breakpoints. foo->Call(env.context(), env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(0, break_point_hit_count); // Run with breakpoint int bp = SetBreakPoint(foo, 0); foo->Call(env.context(), env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(1, break_point_hit_count); foo->Call(env.context(), env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(2, break_point_hit_count); // Run without breakpoints. ClearBreakPoint(bp); foo->Call(env.context(), env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(2, break_point_hit_count); v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr); CheckDebuggerUnloaded(env->GetIsolate()); } // Test that a break point can be set at an IC load location. TEST(BreakPointICLoad) { break_point_hit_count = 0; DebugLocalContext env; v8::HandleScope scope(env->GetIsolate()); v8::Debug::SetDebugEventListener(env->GetIsolate(), DebugEventBreakPointHitCount); CompileRunChecked(env->GetIsolate(), "bar=1"); v8::Local foo = CompileFunction(&env, "function foo(){var x=bar;}", "foo"); // Run without breakpoints. foo->Call(env.context(), env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(0, break_point_hit_count); // Run with breakpoint. int bp = SetBreakPoint(foo, 0); foo->Call(env.context(), env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(1, break_point_hit_count); foo->Call(env.context(), env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(2, break_point_hit_count); // Run without breakpoints. ClearBreakPoint(bp); foo->Call(env.context(), env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(2, break_point_hit_count); v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr); CheckDebuggerUnloaded(env->GetIsolate()); } // Test that a break point can be set at an IC call location. TEST(BreakPointICCall) { break_point_hit_count = 0; DebugLocalContext env; v8::HandleScope scope(env->GetIsolate()); v8::Debug::SetDebugEventListener(env->GetIsolate(), DebugEventBreakPointHitCount); CompileRunChecked(env->GetIsolate(), "function bar(){}"); v8::Local foo = CompileFunction(&env, "function foo(){bar();}", "foo"); // Run without breakpoints. foo->Call(env.context(), env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(0, break_point_hit_count); // Run with breakpoint int bp = SetBreakPoint(foo, 0); foo->Call(env.context(), env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(1, break_point_hit_count); foo->Call(env.context(), env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(2, break_point_hit_count); // Run without breakpoints. ClearBreakPoint(bp); foo->Call(env.context(), env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(2, break_point_hit_count); v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr); CheckDebuggerUnloaded(env->GetIsolate()); } // Test that a break point can be set at an IC call location and survive a GC. TEST(BreakPointICCallWithGC) { break_point_hit_count = 0; DebugLocalContext env; v8::HandleScope scope(env->GetIsolate()); v8::Debug::SetDebugEventListener(env->GetIsolate(), DebugEventBreakPointCollectGarbage); CompileRunChecked(env->GetIsolate(), "function bar(){return 1;}"); v8::Local foo = CompileFunction(&env, "function foo(){return bar();}", "foo"); v8::Local context = env.context(); // Run without breakpoints. CHECK_EQ(1, foo->Call(context, env->Global(), 0, NULL) .ToLocalChecked() ->Int32Value(context) .FromJust()); CHECK_EQ(0, break_point_hit_count); // Run with breakpoint. int bp = SetBreakPoint(foo, 0); CHECK_EQ(1, foo->Call(context, env->Global(), 0, NULL) .ToLocalChecked() ->Int32Value(context) .FromJust()); CHECK_EQ(1, break_point_hit_count); CHECK_EQ(1, foo->Call(context, env->Global(), 0, NULL) .ToLocalChecked() ->Int32Value(context) .FromJust()); CHECK_EQ(2, break_point_hit_count); // Run without breakpoints. ClearBreakPoint(bp); foo->Call(context, env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(2, break_point_hit_count); v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr); CheckDebuggerUnloaded(env->GetIsolate()); } // Test that a break point can be set at an IC call location and survive a GC. TEST(BreakPointConstructCallWithGC) { break_point_hit_count = 0; DebugLocalContext env; v8::HandleScope scope(env->GetIsolate()); v8::Debug::SetDebugEventListener(env->GetIsolate(), DebugEventBreakPointCollectGarbage); CompileRunChecked(env->GetIsolate(), "function bar(){ this.x = 1;}"); v8::Local foo = CompileFunction(&env, "function foo(){return new bar(1).x;}", "foo"); v8::Local context = env.context(); // Run without breakpoints. CHECK_EQ(1, foo->Call(context, env->Global(), 0, NULL) .ToLocalChecked() ->Int32Value(context) .FromJust()); CHECK_EQ(0, break_point_hit_count); // Run with breakpoint. int bp = SetBreakPoint(foo, 0); CHECK_EQ(1, foo->Call(context, env->Global(), 0, NULL) .ToLocalChecked() ->Int32Value(context) .FromJust()); CHECK_EQ(1, break_point_hit_count); CHECK_EQ(1, foo->Call(context, env->Global(), 0, NULL) .ToLocalChecked() ->Int32Value(context) .FromJust()); CHECK_EQ(2, break_point_hit_count); // Run without breakpoints. ClearBreakPoint(bp); foo->Call(context, env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(2, break_point_hit_count); v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr); CheckDebuggerUnloaded(env->GetIsolate()); } // Test that a break point can be set at a return store location. TEST(BreakPointReturn) { break_point_hit_count = 0; DebugLocalContext env; v8::HandleScope scope(env->GetIsolate()); // Create a functions for checking the source line and column when hitting // a break point. frame_source_line = CompileFunction(&env, frame_source_line_source, "frame_source_line"); frame_source_column = CompileFunction(&env, frame_source_column_source, "frame_source_column"); v8::Debug::SetDebugEventListener(env->GetIsolate(), DebugEventBreakPointHitCount); v8::Local foo = CompileFunction(&env, "function foo(){}", "foo"); v8::Local context = env.context(); // Run without breakpoints. foo->Call(context, env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(0, break_point_hit_count); // Run with breakpoint int bp = SetBreakPoint(foo, 0); foo->Call(context, env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(1, break_point_hit_count); CHECK_EQ(0, last_source_line); CHECK_EQ(15, last_source_column); foo->Call(context, env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(2, break_point_hit_count); CHECK_EQ(0, last_source_line); CHECK_EQ(15, last_source_column); // Run without breakpoints. ClearBreakPoint(bp); foo->Call(context, env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(2, break_point_hit_count); v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr); CheckDebuggerUnloaded(env->GetIsolate()); } static void CallWithBreakPoints(v8::Local context, v8::Local recv, v8::Local f, int break_point_count, int call_count) { break_point_hit_count = 0; for (int i = 0; i < call_count; i++) { f->Call(context, recv, 0, NULL).ToLocalChecked(); CHECK_EQ((i + 1) * break_point_count, break_point_hit_count); } } // Test GC during break point processing. TEST(GCDuringBreakPointProcessing) { break_point_hit_count = 0; DebugLocalContext env; v8::HandleScope scope(env->GetIsolate()); v8::Local context = env.context(); v8::Debug::SetDebugEventListener(env->GetIsolate(), DebugEventBreakPointCollectGarbage); v8::Local foo; // Test IC store break point with garbage collection. foo = CompileFunction(&env, "function foo(){bar=0;}", "foo"); SetBreakPoint(foo, 0); CallWithBreakPoints(context, env->Global(), foo, 1, 10); // Test IC load break point with garbage collection. foo = CompileFunction(&env, "bar=1;function foo(){var x=bar;}", "foo"); SetBreakPoint(foo, 0); CallWithBreakPoints(context, env->Global(), foo, 1, 10); // Test IC call break point with garbage collection. foo = CompileFunction(&env, "function bar(){};function foo(){bar();}", "foo"); SetBreakPoint(foo, 0); CallWithBreakPoints(context, env->Global(), foo, 1, 10); // Test return break point with garbage collection. foo = CompileFunction(&env, "function foo(){}", "foo"); SetBreakPoint(foo, 0); CallWithBreakPoints(context, env->Global(), foo, 1, 25); // Test debug break slot break point with garbage collection. foo = CompileFunction(&env, "function foo(){var a;}", "foo"); SetBreakPoint(foo, 0); CallWithBreakPoints(context, env->Global(), foo, 1, 25); v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr); CheckDebuggerUnloaded(env->GetIsolate()); } // Call the function three times with different garbage collections in between // and make sure that the break point survives. static void CallAndGC(v8::Local context, v8::Local recv, v8::Local f) { break_point_hit_count = 0; for (int i = 0; i < 3; i++) { // Call function. f->Call(context, recv, 0, NULL).ToLocalChecked(); CHECK_EQ(1 + i * 3, break_point_hit_count); // Scavenge and call function. CcTest::CollectGarbage(v8::internal::NEW_SPACE); f->Call(context, recv, 0, NULL).ToLocalChecked(); CHECK_EQ(2 + i * 3, break_point_hit_count); // Mark sweep (and perhaps compact) and call function. CcTest::CollectAllGarbage(i::Heap::kFinalizeIncrementalMarkingMask); f->Call(context, recv, 0, NULL).ToLocalChecked(); CHECK_EQ(3 + i * 3, break_point_hit_count); } } // Test that a break point can be set at a return store location. TEST(BreakPointSurviveGC) { break_point_hit_count = 0; DebugLocalContext env; v8::HandleScope scope(env->GetIsolate()); v8::Local context = env.context(); v8::Debug::SetDebugEventListener(env->GetIsolate(), DebugEventBreakPointHitCount); v8::Local foo; // Test IC store break point with garbage collection. { CompileFunction(&env, "function foo(){}", "foo"); foo = CompileFunction(&env, "function foo(){bar=0;}", "foo"); SetBreakPoint(foo, 0); } CallAndGC(context, env->Global(), foo); // Test IC load break point with garbage collection. { CompileFunction(&env, "function foo(){}", "foo"); foo = CompileFunction(&env, "bar=1;function foo(){var x=bar;}", "foo"); SetBreakPoint(foo, 0); } CallAndGC(context, env->Global(), foo); // Test IC call break point with garbage collection. { CompileFunction(&env, "function foo(){}", "foo"); foo = CompileFunction(&env, "function bar(){};function foo(){bar();}", "foo"); SetBreakPoint(foo, 0); } CallAndGC(context, env->Global(), foo); // Test return break point with garbage collection. { CompileFunction(&env, "function foo(){}", "foo"); foo = CompileFunction(&env, "function foo(){}", "foo"); SetBreakPoint(foo, 0); } CallAndGC(context, env->Global(), foo); // Test non IC break point with garbage collection. { CompileFunction(&env, "function foo(){}", "foo"); foo = CompileFunction(&env, "function foo(){var bar=0;}", "foo"); SetBreakPoint(foo, 0); } CallAndGC(context, env->Global(), foo); v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr); CheckDebuggerUnloaded(env->GetIsolate()); } // Test that break points can be set using the global Debug object. TEST(BreakPointThroughJavaScript) { break_point_hit_count = 0; DebugLocalContext env; v8::Isolate* isolate = env->GetIsolate(); v8::HandleScope scope(isolate); v8::Local context = env.context(); env.ExposeDebug(); v8::Debug::SetDebugEventListener(isolate, DebugEventBreakPointHitCount); CompileRunChecked(isolate, "function bar(){}"); CompileFunction(isolate, "function foo(){bar();bar();}", "foo"); // 012345678901234567890 // 1 2 // Break points are set at position 3 and 9 v8::Local source = v8_str(env->GetIsolate(), "foo()"); v8::Local foo = v8::Script::Compile(context, source).ToLocalChecked(); CHECK_EQ(0, break_point_hit_count); // Run with one breakpoint int bp1 = SetBreakPointFromJS(env->GetIsolate(), "foo", 0, 3); foo->Run(context).ToLocalChecked(); CHECK_EQ(1, break_point_hit_count); foo->Run(context).ToLocalChecked(); CHECK_EQ(2, break_point_hit_count); // Run with two breakpoints int bp2 = SetBreakPointFromJS(env->GetIsolate(), "foo", 0, 9); foo->Run(context).ToLocalChecked(); CHECK_EQ(4, break_point_hit_count); foo->Run(context).ToLocalChecked(); CHECK_EQ(6, break_point_hit_count); // Run with one breakpoint ClearBreakPointFromJS(env->GetIsolate(), bp2); foo->Run(context).ToLocalChecked(); CHECK_EQ(7, break_point_hit_count); foo->Run(context).ToLocalChecked(); CHECK_EQ(8, break_point_hit_count); // Run without breakpoints. ClearBreakPointFromJS(env->GetIsolate(), bp1); foo->Run(context).ToLocalChecked(); CHECK_EQ(8, break_point_hit_count); v8::Debug::SetDebugEventListener(isolate, nullptr); CheckDebuggerUnloaded(isolate); // Make sure that the break point numbers are consecutive. CHECK_EQ(1, bp1); CHECK_EQ(2, bp2); } // Test that break points on scripts identified by name can be set using the // global Debug object. TEST(ScriptBreakPointByNameThroughJavaScript) { break_point_hit_count = 0; DebugLocalContext env; v8::Isolate* isolate = env->GetIsolate(); v8::HandleScope scope(isolate); v8::Local context = env.context(); env.ExposeDebug(); v8::Debug::SetDebugEventListener(isolate, DebugEventBreakPointHitCount); v8::Local script = v8_str(isolate, "function f() {\n" " function h() {\n" " a = 0; // line 2\n" " }\n" " b = 1; // line 4\n" " return h();\n" "}\n" "\n" "function g() {\n" " function h() {\n" " a = 0;\n" " }\n" " b = 2; // line 12\n" " h();\n" " b = 3; // line 14\n" " f(); // line 15\n" "}"); // Compile the script and get the two functions. v8::ScriptOrigin origin = v8::ScriptOrigin(v8_str(isolate, "test")); v8::Script::Compile(context, script, &origin) .ToLocalChecked() ->Run(context) .ToLocalChecked(); v8::Local f = v8::Local::Cast( env->Global()->Get(context, v8_str(isolate, "f")).ToLocalChecked()); v8::Local g = v8::Local::Cast( env->Global()->Get(context, v8_str(isolate, "g")).ToLocalChecked()); // Call f and g without break points. break_point_hit_count = 0; f->Call(context, env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(0, break_point_hit_count); g->Call(context, env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(0, break_point_hit_count); // Call f and g with break point on line 12. int sbp1 = SetScriptBreakPointByNameFromJS(isolate, "test", 12, 0); break_point_hit_count = 0; f->Call(context, env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(0, break_point_hit_count); g->Call(context, env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(1, break_point_hit_count); // Remove the break point again. break_point_hit_count = 0; ClearBreakPointFromJS(env->GetIsolate(), sbp1); f->Call(context, env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(0, break_point_hit_count); g->Call(context, env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(0, break_point_hit_count); // Call f and g with break point on line 2. int sbp2 = SetScriptBreakPointByNameFromJS(env->GetIsolate(), "test", 2, 0); break_point_hit_count = 0; f->Call(context, env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(1, break_point_hit_count); g->Call(context, env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(2, break_point_hit_count); // Call f and g with break point on line 2, 4, 12, 14 and 15. int sbp3 = SetScriptBreakPointByNameFromJS(isolate, "test", 4, 0); int sbp4 = SetScriptBreakPointByNameFromJS(isolate, "test", 12, 0); int sbp5 = SetScriptBreakPointByNameFromJS(isolate, "test", 14, 0); int sbp6 = SetScriptBreakPointByNameFromJS(isolate, "test", 15, 0); break_point_hit_count = 0; f->Call(context, env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(2, break_point_hit_count); g->Call(context, env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(7, break_point_hit_count); // Remove all the break points again. break_point_hit_count = 0; ClearBreakPointFromJS(isolate, sbp2); ClearBreakPointFromJS(isolate, sbp3); ClearBreakPointFromJS(isolate, sbp4); ClearBreakPointFromJS(isolate, sbp5); ClearBreakPointFromJS(isolate, sbp6); f->Call(context, env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(0, break_point_hit_count); g->Call(context, env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(0, break_point_hit_count); v8::Debug::SetDebugEventListener(isolate, nullptr); CheckDebuggerUnloaded(isolate); // Make sure that the break point numbers are consecutive. CHECK_EQ(1, sbp1); CHECK_EQ(2, sbp2); CHECK_EQ(3, sbp3); CHECK_EQ(4, sbp4); CHECK_EQ(5, sbp5); CHECK_EQ(6, sbp6); } TEST(ScriptBreakPointByIdThroughJavaScript) { break_point_hit_count = 0; DebugLocalContext env; v8::Isolate* isolate = env->GetIsolate(); v8::HandleScope scope(isolate); v8::Local context = env.context(); env.ExposeDebug(); v8::Debug::SetDebugEventListener(isolate, DebugEventBreakPointHitCount); v8::Local source = v8_str(isolate, "function f() {\n" " function h() {\n" " a = 0; // line 2\n" " }\n" " b = 1; // line 4\n" " return h();\n" "}\n" "\n" "function g() {\n" " function h() {\n" " a = 0;\n" " }\n" " b = 2; // line 12\n" " h();\n" " b = 3; // line 14\n" " f(); // line 15\n" "}"); // Compile the script and get the two functions. v8::ScriptOrigin origin = v8::ScriptOrigin(v8_str(isolate, "test")); v8::Local script = v8::Script::Compile(context, source, &origin).ToLocalChecked(); script->Run(context).ToLocalChecked(); v8::Local f = v8::Local::Cast( env->Global()->Get(context, v8_str(isolate, "f")).ToLocalChecked()); v8::Local g = v8::Local::Cast( env->Global()->Get(context, v8_str(isolate, "g")).ToLocalChecked()); // Get the script id knowing that internally it is a 32 integer. int script_id = script->GetUnboundScript()->GetId(); // Call f and g without break points. break_point_hit_count = 0; f->Call(context, env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(0, break_point_hit_count); g->Call(context, env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(0, break_point_hit_count); // Call f and g with break point on line 12. int sbp1 = SetScriptBreakPointByIdFromJS(env->GetIsolate(), script_id, 12, 0); break_point_hit_count = 0; f->Call(context, env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(0, break_point_hit_count); g->Call(context, env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(1, break_point_hit_count); // Remove the break point again. break_point_hit_count = 0; ClearBreakPointFromJS(env->GetIsolate(), sbp1); f->Call(context, env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(0, break_point_hit_count); g->Call(context, env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(0, break_point_hit_count); // Call f and g with break point on line 2. int sbp2 = SetScriptBreakPointByIdFromJS(env->GetIsolate(), script_id, 2, 0); break_point_hit_count = 0; f->Call(context, env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(1, break_point_hit_count); g->Call(context, env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(2, break_point_hit_count); // Call f and g with break point on line 2, 4, 12, 14 and 15. int sbp3 = SetScriptBreakPointByIdFromJS(env->GetIsolate(), script_id, 4, 0); int sbp4 = SetScriptBreakPointByIdFromJS(env->GetIsolate(), script_id, 12, 0); int sbp5 = SetScriptBreakPointByIdFromJS(env->GetIsolate(), script_id, 14, 0); int sbp6 = SetScriptBreakPointByIdFromJS(env->GetIsolate(), script_id, 15, 0); break_point_hit_count = 0; f->Call(context, env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(2, break_point_hit_count); g->Call(context, env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(7, break_point_hit_count); // Remove all the break points again. break_point_hit_count = 0; ClearBreakPointFromJS(env->GetIsolate(), sbp2); ClearBreakPointFromJS(env->GetIsolate(), sbp3); ClearBreakPointFromJS(env->GetIsolate(), sbp4); ClearBreakPointFromJS(env->GetIsolate(), sbp5); ClearBreakPointFromJS(env->GetIsolate(), sbp6); f->Call(context, env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(0, break_point_hit_count); g->Call(context, env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(0, break_point_hit_count); v8::Debug::SetDebugEventListener(isolate, nullptr); CheckDebuggerUnloaded(isolate); // Make sure that the break point numbers are consecutive. CHECK_EQ(1, sbp1); CHECK_EQ(2, sbp2); CHECK_EQ(3, sbp3); CHECK_EQ(4, sbp4); CHECK_EQ(5, sbp5); CHECK_EQ(6, sbp6); } // Test conditional script break points. TEST(EnableDisableScriptBreakPoint) { break_point_hit_count = 0; DebugLocalContext env; v8::Isolate* isolate = env->GetIsolate(); v8::HandleScope scope(isolate); v8::Local context = env.context(); env.ExposeDebug(); v8::Debug::SetDebugEventListener(isolate, DebugEventBreakPointHitCount); v8::Local script = v8_str(isolate, "function f() {\n" " a = 0; // line 1\n" "};"); // Compile the script and get function f. v8::ScriptOrigin origin = v8::ScriptOrigin(v8_str(isolate, "test")); v8::Script::Compile(context, script, &origin) .ToLocalChecked() ->Run(context) .ToLocalChecked(); v8::Local f = v8::Local::Cast( env->Global()->Get(context, v8_str(isolate, "f")).ToLocalChecked()); // Set script break point on line 1 (in function f). int sbp = SetScriptBreakPointByNameFromJS(isolate, "test", 1, 0); // Call f while enabeling and disabling the script break point. break_point_hit_count = 0; f->Call(context, env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(1, break_point_hit_count); DisableScriptBreakPointFromJS(isolate, sbp); f->Call(context, env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(1, break_point_hit_count); EnableScriptBreakPointFromJS(isolate, sbp); f->Call(context, env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(2, break_point_hit_count); DisableScriptBreakPointFromJS(isolate, sbp); f->Call(context, env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(2, break_point_hit_count); v8::Debug::SetDebugEventListener(isolate, nullptr); CheckDebuggerUnloaded(isolate); } // Test conditional script break points. TEST(ConditionalScriptBreakPoint) { break_point_hit_count = 0; DebugLocalContext env; v8::HandleScope scope(env->GetIsolate()); env.ExposeDebug(); v8::Debug::SetDebugEventListener(env->GetIsolate(), DebugEventBreakPointHitCount); v8::Local script = v8_str(env->GetIsolate(), "count = 0;\n" "function f() {\n" " g(count++); // line 2\n" "};\n" "function g(x) {\n" " var a=x; // line 5\n" "};"); // Compile the script and get function f. v8::Local context = env.context(); v8::ScriptOrigin origin = v8::ScriptOrigin(v8_str(env->GetIsolate(), "test")); v8::Script::Compile(context, script, &origin) .ToLocalChecked() ->Run(context) .ToLocalChecked(); v8::Local f = v8::Local::Cast( env->Global() ->Get(context, v8_str(env->GetIsolate(), "f")) .ToLocalChecked()); // Set script break point on line 5 (in function g). int sbp1 = SetScriptBreakPointByNameFromJS(env->GetIsolate(), "test", 5, 0); // Call f with different conditions on the script break point. break_point_hit_count = 0; ChangeScriptBreakPointConditionFromJS(env->GetIsolate(), sbp1, "false"); f->Call(env.context(), env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(0, break_point_hit_count); ChangeScriptBreakPointConditionFromJS(env->GetIsolate(), sbp1, "true"); break_point_hit_count = 0; f->Call(env.context(), env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(1, break_point_hit_count); ChangeScriptBreakPointConditionFromJS(env->GetIsolate(), sbp1, "x % 2 == 0"); break_point_hit_count = 0; for (int i = 0; i < 10; i++) { f->Call(env.context(), env->Global(), 0, NULL).ToLocalChecked(); } CHECK_EQ(5, break_point_hit_count); v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr); CheckDebuggerUnloaded(env->GetIsolate()); } // Test when several scripts has the same script data TEST(ScriptBreakPointMultiple) { break_point_hit_count = 0; DebugLocalContext env; v8::HandleScope scope(env->GetIsolate()); env.ExposeDebug(); v8::Debug::SetDebugEventListener(env->GetIsolate(), DebugEventBreakPointHitCount); v8::Local context = env.context(); v8::Local f; v8::Local script_f = v8_str(env->GetIsolate(), "function f() {\n" " a = 0; // line 1\n" "}"); v8::Local g; v8::Local script_g = v8_str(env->GetIsolate(), "function g() {\n" " b = 0; // line 1\n" "}"); v8::ScriptOrigin origin = v8::ScriptOrigin(v8_str(env->GetIsolate(), "test")); // Compile the scripts with same script data and get the functions. v8::Script::Compile(context, script_f, &origin) .ToLocalChecked() ->Run(context) .ToLocalChecked(); f = v8::Local::Cast( env->Global() ->Get(context, v8_str(env->GetIsolate(), "f")) .ToLocalChecked()); v8::Script::Compile(context, script_g, &origin) .ToLocalChecked() ->Run(context) .ToLocalChecked(); g = v8::Local::Cast( env->Global() ->Get(context, v8_str(env->GetIsolate(), "g")) .ToLocalChecked()); int sbp = SetScriptBreakPointByNameFromJS(env->GetIsolate(), "test", 1, 0); // Call f and g and check that the script break point is active. break_point_hit_count = 0; f->Call(context, env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(1, break_point_hit_count); g->Call(context, env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(2, break_point_hit_count); // Clear the script break point. ClearBreakPointFromJS(env->GetIsolate(), sbp); // Call f and g and check that the script break point is no longer active. break_point_hit_count = 0; f->Call(context, env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(0, break_point_hit_count); g->Call(context, env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(0, break_point_hit_count); // Set script break point with the scripts loaded. sbp = SetScriptBreakPointByNameFromJS(env->GetIsolate(), "test", 1, 0); // Call f and g and check that the script break point is active. break_point_hit_count = 0; f->Call(context, env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(1, break_point_hit_count); g->Call(context, env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(2, break_point_hit_count); v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr); CheckDebuggerUnloaded(env->GetIsolate()); } // Test the script origin which has both name and line offset. TEST(ScriptBreakPointLineOffset) { break_point_hit_count = 0; DebugLocalContext env; v8::HandleScope scope(env->GetIsolate()); env.ExposeDebug(); v8::Debug::SetDebugEventListener(env->GetIsolate(), DebugEventBreakPointHitCount); v8::Local context = env.context(); v8::Local f; v8::Local script = v8_str(env->GetIsolate(), "function f() {\n" " a = 0; // line 8 as this script has line offset 7\n" " b = 0; // line 9 as this script has line offset 7\n" "}"); // Create script origin both name and line offset. v8::ScriptOrigin origin(v8_str(env->GetIsolate(), "test.html"), v8::Integer::New(env->GetIsolate(), 7)); // Compile the script and get the function. v8::Script::Compile(context, script, &origin) .ToLocalChecked() ->Run(context) .ToLocalChecked(); int sbp1 = SetScriptBreakPointByNameFromJS(env->GetIsolate(), "test.html", 8, 0); int sbp2 = SetScriptBreakPointByNameFromJS(env->GetIsolate(), "test.html", 9, 0); f = v8::Local::Cast( env->Global() ->Get(context, v8_str(env->GetIsolate(), "f")) .ToLocalChecked()); // Call f and check that the script break point is active. break_point_hit_count = 0; f->Call(context, env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(2, break_point_hit_count); // Clear the script break points. ClearBreakPointFromJS(env->GetIsolate(), sbp1); ClearBreakPointFromJS(env->GetIsolate(), sbp2); // Call f and check that no script break points are active. break_point_hit_count = 0; f->Call(context, env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(0, break_point_hit_count); // Set a script break point with the script loaded. sbp1 = SetScriptBreakPointByNameFromJS(env->GetIsolate(), "test.html", 9, 0); // Call f and check that the script break point is active. break_point_hit_count = 0; f->Call(context, env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(1, break_point_hit_count); v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr); CheckDebuggerUnloaded(env->GetIsolate()); } // Test script break points set on lines. TEST(ScriptBreakPointLine) { DebugLocalContext env; v8::HandleScope scope(env->GetIsolate()); env.ExposeDebug(); // Create a function for checking the function when hitting a break point. frame_function_name = CompileFunction(&env, frame_function_name_source, "frame_function_name"); v8::Debug::SetDebugEventListener(env->GetIsolate(), DebugEventBreakPointHitCount); v8::Local context = env.context(); v8::Local f; v8::Local g; v8::Local script = v8_str(env->GetIsolate(), "a = 0 // line 0\n" "function f() {\n" " a = 1; // line 2\n" "}\n" " a = 2; // line 4\n" " /* xx */ function g() { // line 5\n" " function h() { // line 6\n" " a = 3; // line 7\n" " }\n" " h(); // line 9\n" " a = 4; // line 10\n" " }\n" " a=5; // line 12"); // Compile the script and get the function. break_point_hit_count = 0; v8::ScriptOrigin origin(v8_str(env->GetIsolate(), "test.html"), v8::Integer::New(env->GetIsolate(), 0)); v8::Local compiled = v8::Script::Compile(context, script, &origin).ToLocalChecked(); int sbp1 = SetScriptBreakPointByNameFromJS(env->GetIsolate(), "test.html", 0, -1); int sbp2 = SetScriptBreakPointByNameFromJS(env->GetIsolate(), "test.html", 1, -1); int sbp3 = SetScriptBreakPointByNameFromJS(env->GetIsolate(), "test.html", 5, -1); compiled->Run(context).ToLocalChecked(); f = v8::Local::Cast( env->Global() ->Get(context, v8_str(env->GetIsolate(), "f")) .ToLocalChecked()); g = v8::Local::Cast( env->Global() ->Get(context, v8_str(env->GetIsolate(), "g")) .ToLocalChecked()); // Check that a break point was hit when the script was run. CHECK_EQ(1, break_point_hit_count); CHECK_EQ(0, StrLength(last_function_hit)); // Call f and check that the script break point. f->Call(context, env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(2, break_point_hit_count); CHECK_EQ(0, strcmp("f", last_function_hit)); // Call g and check that the script break point. g->Call(context, env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(3, break_point_hit_count); CHECK_EQ(0, strcmp("g", last_function_hit)); // Clear the script break point on g and set one on h. ClearBreakPointFromJS(env->GetIsolate(), sbp3); int sbp4 = SetScriptBreakPointByNameFromJS(env->GetIsolate(), "test.html", 6, -1); // Call g and check that the script break point in h is hit. g->Call(context, env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(4, break_point_hit_count); CHECK_EQ(0, strcmp("h", last_function_hit)); // Clear break points in f and h. Set a new one in the script between // functions f and g and test that there is no break points in f and g any // more. ClearBreakPointFromJS(env->GetIsolate(), sbp2); ClearBreakPointFromJS(env->GetIsolate(), sbp4); int sbp5 = SetScriptBreakPointByNameFromJS(env->GetIsolate(), "test.html", 4, -1); break_point_hit_count = 0; f->Call(context, env->Global(), 0, NULL).ToLocalChecked(); g->Call(context, env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(0, break_point_hit_count); // Set a break point in the code after the last function decleration. int sbp6 = SetScriptBreakPointByNameFromJS(env->GetIsolate(), "test.html", 12, -1); // Reloading the script should not hit any break points. break_point_hit_count = 0; v8::Script::Compile(context, script, &origin) .ToLocalChecked() ->Run(context) .ToLocalChecked(); CHECK_EQ(0, break_point_hit_count); ClearBreakPointFromJS(env->GetIsolate(), sbp1); ClearBreakPointFromJS(env->GetIsolate(), sbp5); ClearBreakPointFromJS(env->GetIsolate(), sbp6); v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr); CheckDebuggerUnloaded(env->GetIsolate()); } // Test top level script break points set on lines. TEST(ScriptBreakPointLineTopLevel) { DebugLocalContext env; v8::HandleScope scope(env->GetIsolate()); env.ExposeDebug(); v8::Debug::SetDebugEventListener(env->GetIsolate(), DebugEventBreakPointHitCount); v8::Local context = env.context(); v8::Local script = v8_str(env->GetIsolate(), "function f() {\n" " a = 1; // line 1\n" "}\n" "a = 2; // line 3\n"); v8::Local f; { v8::HandleScope scope(env->GetIsolate()); CompileRunWithOrigin(script, "test.html"); } f = v8::Local::Cast( env->Global() ->Get(context, v8_str(env->GetIsolate(), "f")) .ToLocalChecked()); CcTest::CollectAllGarbage(i::Heap::kFinalizeIncrementalMarkingMask); SetScriptBreakPointByNameFromJS(env->GetIsolate(), "test.html", 3, -1); // Call f and check that there was no break points. break_point_hit_count = 0; f->Call(context, env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(0, break_point_hit_count); // Recompile and run script and check that break point was not reapplied. break_point_hit_count = 0; CompileRunWithOrigin(script, "test.html"); CHECK_EQ(0, break_point_hit_count); v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr); CheckDebuggerUnloaded(env->GetIsolate()); } // Test that it is possible to add and remove break points in a top level // function which has no references but has not been collected yet. TEST(ScriptBreakPointTopLevelCrash) { DebugLocalContext env; v8::HandleScope scope(env->GetIsolate()); env.ExposeDebug(); v8::Debug::SetDebugEventListener(env->GetIsolate(), DebugEventBreakPointHitCount); CompileRunWithOrigin( "function f() {\n" " return 0;\n" "}\n", "test.html"); int sbp1 = SetScriptBreakPointByNameFromJS(env->GetIsolate(), "test.html", 1, -1); break_point_hit_count = 0; CompileRun("f();"); CHECK_EQ(1, break_point_hit_count); int sbp2 = SetScriptBreakPointByNameFromJS(env->GetIsolate(), "test.html", 3, -1); ClearBreakPointFromJS(env->GetIsolate(), sbp1); ClearBreakPointFromJS(env->GetIsolate(), sbp2); v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr); CheckDebuggerUnloaded(env->GetIsolate()); } // Test that it is possible to remove the last break point for a function // inside the break handling of that break point. TEST(RemoveBreakPointInBreak) { DebugLocalContext env; v8::HandleScope scope(env->GetIsolate()); v8::Local context = env.context(); v8::Local foo = CompileFunction(&env, "function foo(){a=1;}", "foo"); // Register the debug event listener pasing the function v8::Debug::SetDebugEventListener(env->GetIsolate(), DebugEventRemoveBreakPoint, foo); debug_event_remove_break_point = SetBreakPoint(foo, 0); break_point_hit_count = 0; foo->Call(context, env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(1, break_point_hit_count); break_point_hit_count = 0; foo->Call(context, env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(0, break_point_hit_count); v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr); CheckDebuggerUnloaded(env->GetIsolate()); } // Test that the debugger statement causes a break. TEST(DebuggerStatement) { break_point_hit_count = 0; DebugLocalContext env; v8::HandleScope scope(env->GetIsolate()); v8::Debug::SetDebugEventListener(env->GetIsolate(), DebugEventBreakPointHitCount); v8::Local context = env.context(); v8::Script::Compile(context, v8_str(env->GetIsolate(), "function bar(){debugger}")) .ToLocalChecked() ->Run(context) .ToLocalChecked(); v8::Script::Compile( context, v8_str(env->GetIsolate(), "function foo(){debugger;debugger;}")) .ToLocalChecked() ->Run(context) .ToLocalChecked(); v8::Local foo = v8::Local::Cast( env->Global() ->Get(context, v8_str(env->GetIsolate(), "foo")) .ToLocalChecked()); v8::Local bar = v8::Local::Cast( env->Global() ->Get(context, v8_str(env->GetIsolate(), "bar")) .ToLocalChecked()); // Run function with debugger statement bar->Call(context, env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(1, break_point_hit_count); // Run function with two debugger statement foo->Call(context, env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(3, break_point_hit_count); v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr); CheckDebuggerUnloaded(env->GetIsolate()); } // Test setting a breakpoint on the debugger statement. TEST(DebuggerStatementBreakpoint) { break_point_hit_count = 0; DebugLocalContext env; v8::HandleScope scope(env->GetIsolate()); v8::Local context = env.context(); v8::Debug::SetDebugEventListener(env->GetIsolate(), DebugEventBreakPointHitCount); v8::Script::Compile(context, v8_str(env->GetIsolate(), "function foo(){debugger;}")) .ToLocalChecked() ->Run(context) .ToLocalChecked(); v8::Local foo = v8::Local::Cast( env->Global() ->Get(context, v8_str(env->GetIsolate(), "foo")) .ToLocalChecked()); // The debugger statement triggers breakpoint hit foo->Call(context, env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(1, break_point_hit_count); int bp = SetBreakPoint(foo, 0); // Set breakpoint does not duplicate hits foo->Call(context, env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(2, break_point_hit_count); ClearBreakPoint(bp); v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr); CheckDebuggerUnloaded(env->GetIsolate()); } // Test that the evaluation of expressions when a break point is hit generates // the correct results. TEST(DebugEvaluate) { DebugLocalContext env; v8::Isolate* isolate = env->GetIsolate(); v8::HandleScope scope(isolate); env.ExposeDebug(); // Create a function for checking the evaluation when hitting a break point. evaluate_check_function = CompileFunction(&env, evaluate_check_source, "evaluate_check"); // Register the debug event listener v8::Debug::SetDebugEventListener(isolate, DebugEventEvaluate); // Different expected vaules of x and a when in a break point (u = undefined, // d = Hello, world!). struct EvaluateCheck checks_uu[] = {{"x", v8::Undefined(isolate)}, {"a", v8::Undefined(isolate)}, {NULL, v8::Local()}}; struct EvaluateCheck checks_hu[] = { {"x", v8_str(env->GetIsolate(), "Hello, world!")}, {"a", v8::Undefined(isolate)}, {NULL, v8::Local()}}; struct EvaluateCheck checks_hh[] = { {"x", v8_str(env->GetIsolate(), "Hello, world!")}, {"a", v8_str(env->GetIsolate(), "Hello, world!")}, {NULL, v8::Local()}}; // Simple test function. The "y=0" is in the function foo to provide a break // location. For "y=0" the "y" is at position 15 in the foo function // therefore setting breakpoint at position 15 will break at "y=0" and // setting it higher will break after. v8::Local foo = CompileFunction(&env, "function foo(x) {" " var a;" " y=0;" // To ensure break location 1. " a=x;" " y=0;" // To ensure break location 2. "}", "foo"); const int foo_break_position_1 = 15; const int foo_break_position_2 = 29; v8::Local context = env.context(); // Arguments with one parameter "Hello, world!" v8::Local argv_foo[1] = { v8_str(env->GetIsolate(), "Hello, world!")}; // Call foo with breakpoint set before a=x and undefined as parameter. int bp = SetBreakPoint(foo, foo_break_position_1); checks = checks_uu; foo->Call(context, env->Global(), 0, NULL).ToLocalChecked(); // Call foo with breakpoint set before a=x and parameter "Hello, world!". checks = checks_hu; foo->Call(context, env->Global(), 1, argv_foo).ToLocalChecked(); // Call foo with breakpoint set after a=x and parameter "Hello, world!". ClearBreakPoint(bp); SetBreakPoint(foo, foo_break_position_2); checks = checks_hh; foo->Call(context, env->Global(), 1, argv_foo).ToLocalChecked(); // Test that overriding Object.prototype will not interfere into evaluation // on call frame. v8::Local zoo = CompileFunction(&env, "x = undefined;" "function zoo(t) {" " var a=x;" " Object.prototype.x = 42;" " x=t;" " y=0;" // To ensure break location. " delete Object.prototype.x;" " x=a;" "}", "zoo"); const int zoo_break_position = 50; // Arguments with one parameter "Hello, world!" v8::Local argv_zoo[1] = { v8_str(env->GetIsolate(), "Hello, world!")}; // Call zoo with breakpoint set at y=0. DebugEventCounterClear(); bp = SetBreakPoint(zoo, zoo_break_position); checks = checks_hu; zoo->Call(context, env->Global(), 1, argv_zoo).ToLocalChecked(); CHECK_EQ(1, break_point_hit_count); ClearBreakPoint(bp); // Test function with an inner function. The "y=0" is in function barbar // to provide a break location. For "y=0" the "y" is at position 8 in the // barbar function therefore setting breakpoint at position 8 will break at // "y=0" and setting it higher will break after. v8::Local bar = CompileFunction(&env, "y = 0;" "x = 'Goodbye, world!';" "function bar(x, b) {" " var a;" " function barbar() {" " y=0; /* To ensure break location.*/" " a=x;" " };" " debug.Debug.clearAllBreakPoints();" " barbar();" " y=0;a=x;" "}", "bar"); const int barbar_break_position = 8; // Call bar setting breakpoint before a=x in barbar and undefined as // parameter. checks = checks_uu; v8::Local argv_bar_1[2] = { v8::Undefined(isolate), v8::Number::New(isolate, barbar_break_position)}; bar->Call(context, env->Global(), 2, argv_bar_1).ToLocalChecked(); // Call bar setting breakpoint before a=x in barbar and parameter // "Hello, world!". checks = checks_hu; v8::Local argv_bar_2[2] = { v8_str(env->GetIsolate(), "Hello, world!"), v8::Number::New(env->GetIsolate(), barbar_break_position)}; bar->Call(context, env->Global(), 2, argv_bar_2).ToLocalChecked(); // Call bar setting breakpoint after a=x in barbar and parameter // "Hello, world!". checks = checks_hh; v8::Local argv_bar_3[2] = { v8_str(env->GetIsolate(), "Hello, world!"), v8::Number::New(env->GetIsolate(), barbar_break_position + 1)}; bar->Call(context, env->Global(), 2, argv_bar_3).ToLocalChecked(); v8::Debug::SetDebugEventListener(isolate, nullptr); CheckDebuggerUnloaded(isolate); } int debugEventCount = 0; static void CheckDebugEvent(const v8::Debug::EventDetails& eventDetails) { if (eventDetails.GetEvent() == v8::Break) ++debugEventCount; } // Test that the conditional breakpoints work event if code generation from // strings is prohibited in the debugee context. TEST(ConditionalBreakpointWithCodeGenerationDisallowed) { DebugLocalContext env; v8::HandleScope scope(env->GetIsolate()); env.ExposeDebug(); v8::Debug::SetDebugEventListener(env->GetIsolate(), CheckDebugEvent); v8::Local context = env.context(); v8::Local foo = CompileFunction(&env, "function foo(x) {\n" " var s = 'String value2';\n" " return s + x;\n" "}", "foo"); // Set conditional breakpoint with condition 'true'. CompileRun("debug.Debug.setBreakPoint(foo, 2, 0, 'true')"); debugEventCount = 0; env->AllowCodeGenerationFromStrings(false); foo->Call(context, env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(1, debugEventCount); v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr); CheckDebuggerUnloaded(env->GetIsolate()); } bool checkedDebugEvals = true; v8::Local checkGlobalEvalFunction; v8::Local checkFrameEvalFunction; static void CheckDebugEval(const v8::Debug::EventDetails& eventDetails) { if (eventDetails.GetEvent() == v8::Break) { ++debugEventCount; v8::HandleScope handleScope(CcTest::isolate()); v8::Local args[] = {eventDetails.GetExecutionState()}; CHECK( checkGlobalEvalFunction->Call(eventDetails.GetEventContext(), eventDetails.GetEventContext()->Global(), 1, args) .ToLocalChecked() ->IsTrue()); CHECK(checkFrameEvalFunction->Call(eventDetails.GetEventContext(), eventDetails.GetEventContext()->Global(), 1, args) .ToLocalChecked() ->IsTrue()); } } // Test that the evaluation of expressions when a break point is hit generates // the correct results in case code generation from strings is disallowed in the // debugee context. TEST(DebugEvaluateWithCodeGenerationDisallowed) { DebugLocalContext env; v8::HandleScope scope(env->GetIsolate()); env.ExposeDebug(); v8::Debug::SetDebugEventListener(env->GetIsolate(), CheckDebugEval); v8::Local context = env.context(); v8::Local foo = CompileFunction(&env, "var global = 'Global';\n" "function foo(x) {\n" " var local = 'Local';\n" " debugger;\n" " return local + x;\n" "}", "foo"); checkGlobalEvalFunction = CompileFunction(&env, "function checkGlobalEval(exec_state) {\n" " return exec_state.evaluateGlobal('global').value() === 'Global';\n" "}", "checkGlobalEval"); checkFrameEvalFunction = CompileFunction(&env, "function checkFrameEval(exec_state) {\n" " return exec_state.frame(0).evaluate('local').value() === 'Local';\n" "}", "checkFrameEval"); debugEventCount = 0; env->AllowCodeGenerationFromStrings(false); foo->Call(context, env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(1, debugEventCount); checkGlobalEvalFunction.Clear(); checkFrameEvalFunction.Clear(); v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr); CheckDebuggerUnloaded(env->GetIsolate()); } // Simple test of the stepping mechanism using only store ICs. TEST(DebugStepLinear) { DebugLocalContext env; v8::HandleScope scope(env->GetIsolate()); // Create a function for testing stepping. v8::Local foo = CompileFunction(&env, "function foo(){a=1;b=1;c=1;}", "foo"); // Run foo to allow it to get optimized. CompileRun("a=0; b=0; c=0; foo();"); // Register a debug event listener which steps and counts. v8::Debug::SetDebugEventListener(env->GetIsolate(), DebugEventStep); SetBreakPoint(foo, 3); step_action = StepIn; break_point_hit_count = 0; v8::Local context = env.context(); foo->Call(context, env->Global(), 0, NULL).ToLocalChecked(); // With stepping all break locations are hit. CHECK_EQ(4, break_point_hit_count); v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr); CheckDebuggerUnloaded(env->GetIsolate()); // Register a debug event listener which just counts. v8::Debug::SetDebugEventListener(env->GetIsolate(), DebugEventBreakPointHitCount); SetBreakPoint(foo, 3); break_point_hit_count = 0; foo->Call(context, env->Global(), 0, NULL).ToLocalChecked(); // Without stepping only active break points are hit. CHECK_EQ(1, break_point_hit_count); v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr); CheckDebuggerUnloaded(env->GetIsolate()); } // Test of the stepping mechanism for keyed load in a loop. TEST(DebugStepKeyedLoadLoop) { DebugLocalContext env; v8::HandleScope scope(env->GetIsolate()); // Register a debug event listener which steps and counts. v8::Debug::SetDebugEventListener(env->GetIsolate(), DebugEventStep); // Create a function for testing stepping of keyed load. The statement 'y=1' // is there to have more than one breakable statement in the loop, TODO(315). v8::Local foo = CompileFunction( &env, "function foo(a) {\n" " var x;\n" " var len = a.length;\n" " for (var i = 0; i < len; i++) {\n" " y = 1;\n" " x = a[i];\n" " }\n" "}\n" "y=0\n", "foo"); v8::Local context = env.context(); // Create array [0,1,2,3,4,5,6,7,8,9] v8::Local a = v8::Array::New(env->GetIsolate(), 10); for (int i = 0; i < 10; i++) { CHECK(a->Set(context, v8::Number::New(env->GetIsolate(), i), v8::Number::New(env->GetIsolate(), i)) .FromJust()); } // Call function without any break points to ensure inlining is in place. const int kArgc = 1; v8::Local args[kArgc] = {a}; foo->Call(context, env->Global(), kArgc, args).ToLocalChecked(); // Set up break point and step through the function. SetBreakPoint(foo, 3); step_action = StepNext; break_point_hit_count = 0; foo->Call(context, env->Global(), kArgc, args).ToLocalChecked(); // With stepping all break locations are hit. CHECK_EQ(44, break_point_hit_count); v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr); CheckDebuggerUnloaded(env->GetIsolate()); } // Test of the stepping mechanism for keyed store in a loop. TEST(DebugStepKeyedStoreLoop) { DebugLocalContext env; v8::HandleScope scope(env->GetIsolate()); // Register a debug event listener which steps and counts. v8::Debug::SetDebugEventListener(env->GetIsolate(), DebugEventStep); // Create a function for testing stepping of keyed store. The statement 'y=1' // is there to have more than one breakable statement in the loop, TODO(315). v8::Local foo = CompileFunction( &env, "function foo(a) {\n" " var len = a.length;\n" " for (var i = 0; i < len; i++) {\n" " y = 1;\n" " a[i] = 42;\n" " }\n" "}\n" "y=0\n", "foo"); v8::Local context = env.context(); // Create array [0,1,2,3,4,5,6,7,8,9] v8::Local a = v8::Array::New(env->GetIsolate(), 10); for (int i = 0; i < 10; i++) { CHECK(a->Set(context, v8::Number::New(env->GetIsolate(), i), v8::Number::New(env->GetIsolate(), i)) .FromJust()); } // Call function without any break points to ensure inlining is in place. const int kArgc = 1; v8::Local args[kArgc] = {a}; foo->Call(context, env->Global(), kArgc, args).ToLocalChecked(); // Set up break point and step through the function. SetBreakPoint(foo, 3); step_action = StepNext; break_point_hit_count = 0; foo->Call(context, env->Global(), kArgc, args).ToLocalChecked(); // With stepping all break locations are hit. CHECK_EQ(44, break_point_hit_count); v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr); CheckDebuggerUnloaded(env->GetIsolate()); } // Test of the stepping mechanism for named load in a loop. TEST(DebugStepNamedLoadLoop) { DebugLocalContext env; v8::HandleScope scope(env->GetIsolate()); // Register a debug event listener which steps and counts. v8::Debug::SetDebugEventListener(env->GetIsolate(), DebugEventStep); v8::Local context = env.context(); // Create a function for testing stepping of named load. v8::Local foo = CompileFunction( &env, "function foo() {\n" " var a = [];\n" " var s = \"\";\n" " for (var i = 0; i < 10; i++) {\n" " var v = new V(i, i + 1);\n" " v.y;\n" " a.length;\n" // Special case: array length. " s.length;\n" // Special case: string length. " }\n" "}\n" "function V(x, y) {\n" " this.x = x;\n" " this.y = y;\n" "}\n", "foo"); // Call function without any break points to ensure inlining is in place. foo->Call(context, env->Global(), 0, NULL).ToLocalChecked(); // Set up break point and step through the function. SetBreakPoint(foo, 4); step_action = StepNext; break_point_hit_count = 0; foo->Call(context, env->Global(), 0, NULL).ToLocalChecked(); // With stepping all break locations are hit. CHECK_EQ(65, break_point_hit_count); v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr); CheckDebuggerUnloaded(env->GetIsolate()); } static void DoDebugStepNamedStoreLoop(int expected) { DebugLocalContext env; v8::HandleScope scope(env->GetIsolate()); // Register a debug event listener which steps and counts. v8::Debug::SetDebugEventListener(env->GetIsolate(), DebugEventStep); // Create a function for testing stepping of named store. v8::Local context = env.context(); v8::Local foo = CompileFunction( &env, "function foo() {\n" " var a = {a:1};\n" " for (var i = 0; i < 10; i++) {\n" " a.a = 2\n" " }\n" "}\n", "foo"); // Call function without any break points to ensure inlining is in place. foo->Call(context, env->Global(), 0, NULL).ToLocalChecked(); // Set up break point and step through the function. SetBreakPoint(foo, 3); step_action = StepNext; break_point_hit_count = 0; foo->Call(context, env->Global(), 0, NULL).ToLocalChecked(); // With stepping all expected break locations are hit. CHECK_EQ(expected, break_point_hit_count); v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr); CheckDebuggerUnloaded(env->GetIsolate()); } // Test of the stepping mechanism for named load in a loop. TEST(DebugStepNamedStoreLoop) { DoDebugStepNamedStoreLoop(34); } // Test the stepping mechanism with different ICs. TEST(DebugStepLinearMixedICs) { DebugLocalContext env; v8::HandleScope scope(env->GetIsolate()); // Register a debug event listener which steps and counts. v8::Debug::SetDebugEventListener(env->GetIsolate(), DebugEventStep); v8::Local context = env.context(); // Create a function for testing stepping. v8::Local foo = CompileFunction(&env, "function bar() {};" "function foo() {" " var x;" " var index='name';" " var y = {};" " a=1;b=2;x=a;y[index]=3;x=y[index];bar();}", "foo"); // Run functions to allow them to get optimized. CompileRun("a=0; b=0; bar(); foo();"); SetBreakPoint(foo, 0); step_action = StepIn; break_point_hit_count = 0; foo->Call(context, env->Global(), 0, NULL).ToLocalChecked(); // With stepping all break locations are hit. CHECK_EQ(10, break_point_hit_count); v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr); CheckDebuggerUnloaded(env->GetIsolate()); // Register a debug event listener which just counts. v8::Debug::SetDebugEventListener(env->GetIsolate(), DebugEventBreakPointHitCount); SetBreakPoint(foo, 0); break_point_hit_count = 0; foo->Call(context, env->Global(), 0, NULL).ToLocalChecked(); // Without stepping only active break points are hit. CHECK_EQ(1, break_point_hit_count); v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr); CheckDebuggerUnloaded(env->GetIsolate()); } TEST(DebugStepDeclarations) { DebugLocalContext env; v8::HandleScope scope(env->GetIsolate()); // Register a debug event listener which steps and counts. v8::Debug::SetDebugEventListener(env->GetIsolate(), DebugEventStep); v8::Local context = env.context(); // Create a function for testing stepping. Run it to allow it to get // optimized. const char* src = "function foo() { " " var a;" " var b = 1;" " var c = foo;" " var d = Math.floor;" " var e = b + d(1.2);" "}" "foo()"; v8::Local foo = CompileFunction(&env, src, "foo"); SetBreakPoint(foo, 0); // Stepping through the declarations. step_action = StepIn; break_point_hit_count = 0; foo->Call(context, env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(5, break_point_hit_count); // Get rid of the debug event listener. v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr); CheckDebuggerUnloaded(env->GetIsolate()); } TEST(DebugStepLocals) { DebugLocalContext env; v8::HandleScope scope(env->GetIsolate()); // Register a debug event listener which steps and counts. v8::Debug::SetDebugEventListener(env->GetIsolate(), DebugEventStep); v8::Local context = env.context(); // Create a function for testing stepping. Run it to allow it to get // optimized. const char* src = "function foo() { " " var a,b;" " a = 1;" " b = a + 2;" " b = 1 + 2 + 3;" " a = Math.floor(b);" "}" "foo()"; v8::Local foo = CompileFunction(&env, src, "foo"); SetBreakPoint(foo, 0); // Stepping through the declarations. step_action = StepIn; break_point_hit_count = 0; foo->Call(context, env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(5, break_point_hit_count); // Get rid of the debug event listener. v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr); CheckDebuggerUnloaded(env->GetIsolate()); } TEST(DebugStepIf) { DebugLocalContext env; v8::Isolate* isolate = env->GetIsolate(); v8::HandleScope scope(isolate); // Register a debug event listener which steps and counts. v8::Debug::SetDebugEventListener(env->GetIsolate(), DebugEventStep); v8::Local context = env.context(); // Create a function for testing stepping. Run it to allow it to get // optimized. const int argc = 1; const char* src = "function foo(x) { " " a = 1;" " if (x) {" " b = 1;" " } else {" " c = 1;" " d = 1;" " }" "}" "a=0; b=0; c=0; d=0; foo()"; v8::Local foo = CompileFunction(&env, src, "foo"); SetBreakPoint(foo, 0); // Stepping through the true part. step_action = StepIn; break_point_hit_count = 0; v8::Local argv_true[argc] = {v8::True(isolate)}; foo->Call(context, env->Global(), argc, argv_true).ToLocalChecked(); CHECK_EQ(4, break_point_hit_count); // Stepping through the false part. step_action = StepIn; break_point_hit_count = 0; v8::Local argv_false[argc] = {v8::False(isolate)}; foo->Call(context, env->Global(), argc, argv_false).ToLocalChecked(); CHECK_EQ(5, break_point_hit_count); // Get rid of the debug event listener. v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr); CheckDebuggerUnloaded(isolate); } TEST(DebugStepSwitch) { DebugLocalContext env; v8::Isolate* isolate = env->GetIsolate(); v8::HandleScope scope(isolate); // Register a debug event listener which steps and counts. v8::Debug::SetDebugEventListener(isolate, DebugEventStep); v8::Local context = env.context(); // Create a function for testing stepping. Run it to allow it to get // optimized. const int argc = 1; const char* src = "function foo(x) { " " a = 1;" " switch (x) {" " case 1:" " b = 1;" " case 2:" " c = 1;" " break;" " case 3:" " d = 1;" " e = 1;" " f = 1;" " break;" " }" "}" "a=0; b=0; c=0; d=0; e=0; f=0; foo()"; v8::Local foo = CompileFunction(&env, src, "foo"); SetBreakPoint(foo, 0); // One case with fall-through. step_action = StepIn; break_point_hit_count = 0; v8::Local argv_1[argc] = {v8::Number::New(isolate, 1)}; foo->Call(context, env->Global(), argc, argv_1).ToLocalChecked(); CHECK_EQ(6, break_point_hit_count); // Another case. step_action = StepIn; break_point_hit_count = 0; v8::Local argv_2[argc] = {v8::Number::New(isolate, 2)}; foo->Call(context, env->Global(), argc, argv_2).ToLocalChecked(); CHECK_EQ(5, break_point_hit_count); // Last case. step_action = StepIn; break_point_hit_count = 0; v8::Local argv_3[argc] = {v8::Number::New(isolate, 3)}; foo->Call(context, env->Global(), argc, argv_3).ToLocalChecked(); CHECK_EQ(7, break_point_hit_count); // Get rid of the debug event listener. v8::Debug::SetDebugEventListener(isolate, nullptr); CheckDebuggerUnloaded(isolate); } TEST(DebugStepWhile) { DebugLocalContext env; v8::Isolate* isolate = env->GetIsolate(); v8::HandleScope scope(isolate); // Register a debug event listener which steps and counts. v8::Debug::SetDebugEventListener(isolate, DebugEventStep); v8::Local context = env.context(); // Create a function for testing stepping. Run it to allow it to get // optimized. const int argc = 1; const char* src = "function foo(x) { " " var a = 0;" " while (a < x) {" " a++;" " }" "}" "foo()"; v8::Local foo = CompileFunction(&env, src, "foo"); SetBreakPoint(foo, 8); // "var a = 0;" // Looping 0 times. We still should break at the while-condition once. step_action = StepIn; break_point_hit_count = 0; v8::Local argv_0[argc] = {v8::Number::New(isolate, 0)}; foo->Call(context, env->Global(), argc, argv_0).ToLocalChecked(); CHECK_EQ(3, break_point_hit_count); // Looping 10 times. step_action = StepIn; break_point_hit_count = 0; v8::Local argv_10[argc] = {v8::Number::New(isolate, 10)}; foo->Call(context, env->Global(), argc, argv_10).ToLocalChecked(); CHECK_EQ(23, break_point_hit_count); // Looping 100 times. step_action = StepIn; break_point_hit_count = 0; v8::Local argv_100[argc] = {v8::Number::New(isolate, 100)}; foo->Call(context, env->Global(), argc, argv_100).ToLocalChecked(); CHECK_EQ(203, break_point_hit_count); // Get rid of the debug event listener. v8::Debug::SetDebugEventListener(isolate, nullptr); CheckDebuggerUnloaded(isolate); } TEST(DebugStepDoWhile) { DebugLocalContext env; v8::Isolate* isolate = env->GetIsolate(); v8::HandleScope scope(isolate); // Register a debug event listener which steps and counts. v8::Debug::SetDebugEventListener(isolate, DebugEventStep); v8::Local context = env.context(); // Create a function for testing stepping. Run it to allow it to get // optimized. const int argc = 1; const char* src = "function foo(x) { " " var a = 0;" " do {" " a++;" " } while (a < x)" "}" "foo()"; v8::Local foo = CompileFunction(&env, src, "foo"); SetBreakPoint(foo, 8); // "var a = 0;" // Looping 0 times. step_action = StepIn; break_point_hit_count = 0; v8::Local argv_0[argc] = {v8::Number::New(isolate, 0)}; foo->Call(context, env->Global(), argc, argv_0).ToLocalChecked(); CHECK_EQ(4, break_point_hit_count); // Looping 10 times. step_action = StepIn; break_point_hit_count = 0; v8::Local argv_10[argc] = {v8::Number::New(isolate, 10)}; foo->Call(context, env->Global(), argc, argv_10).ToLocalChecked(); CHECK_EQ(22, break_point_hit_count); // Looping 100 times. step_action = StepIn; break_point_hit_count = 0; v8::Local argv_100[argc] = {v8::Number::New(isolate, 100)}; foo->Call(context, env->Global(), argc, argv_100).ToLocalChecked(); CHECK_EQ(202, break_point_hit_count); // Get rid of the debug event listener. v8::Debug::SetDebugEventListener(isolate, nullptr); CheckDebuggerUnloaded(isolate); } TEST(DebugStepFor) { DebugLocalContext env; v8::Isolate* isolate = env->GetIsolate(); v8::HandleScope scope(isolate); // Register a debug event listener which steps and counts. v8::Debug::SetDebugEventListener(isolate, DebugEventStep); v8::Local context = env.context(); // Create a function for testing stepping. Run it to allow it to get // optimized. const int argc = 1; const char* src = "function foo(x) { " " a = 1;" " for (i = 0; i < x; i++) {" " b = 1;" " }" "}" "a=0; b=0; i=0; foo()"; v8::Local foo = CompileFunction(&env, src, "foo"); SetBreakPoint(foo, 8); // "a = 1;" // Looping 0 times. step_action = StepIn; break_point_hit_count = 0; v8::Local argv_0[argc] = {v8::Number::New(isolate, 0)}; foo->Call(context, env->Global(), argc, argv_0).ToLocalChecked(); CHECK_EQ(4, break_point_hit_count); // Looping 10 times. step_action = StepIn; break_point_hit_count = 0; v8::Local argv_10[argc] = {v8::Number::New(isolate, 10)}; foo->Call(context, env->Global(), argc, argv_10).ToLocalChecked(); CHECK_EQ(34, break_point_hit_count); // Looping 100 times. step_action = StepIn; break_point_hit_count = 0; v8::Local argv_100[argc] = {v8::Number::New(isolate, 100)}; foo->Call(context, env->Global(), argc, argv_100).ToLocalChecked(); CHECK_EQ(304, break_point_hit_count); // Get rid of the debug event listener. v8::Debug::SetDebugEventListener(isolate, nullptr); CheckDebuggerUnloaded(isolate); } TEST(DebugStepForContinue) { DebugLocalContext env; v8::Isolate* isolate = env->GetIsolate(); v8::HandleScope scope(isolate); // Register a debug event listener which steps and counts. v8::Debug::SetDebugEventListener(isolate, DebugEventStep); v8::Local context = env.context(); // Create a function for testing stepping. Run it to allow it to get // optimized. const int argc = 1; const char* src = "function foo(x) { " " var a = 0;" " var b = 0;" " var c = 0;" " for (var i = 0; i < x; i++) {" " a++;" " if (a % 2 == 0) continue;" " b++;" " c++;" " }" " return b;" "}" "foo()"; v8::Local foo = CompileFunction(&env, src, "foo"); v8::Local result; SetBreakPoint(foo, 8); // "var a = 0;" // Each loop generates 4 or 5 steps depending on whether a is equal. // Looping 10 times. step_action = StepIn; break_point_hit_count = 0; v8::Local argv_10[argc] = {v8::Number::New(isolate, 10)}; result = foo->Call(context, env->Global(), argc, argv_10).ToLocalChecked(); CHECK_EQ(5, result->Int32Value(context).FromJust()); CHECK_EQ(62, break_point_hit_count); // Looping 100 times. step_action = StepIn; break_point_hit_count = 0; v8::Local argv_100[argc] = {v8::Number::New(isolate, 100)}; result = foo->Call(context, env->Global(), argc, argv_100).ToLocalChecked(); CHECK_EQ(50, result->Int32Value(context).FromJust()); CHECK_EQ(557, break_point_hit_count); // Get rid of the debug event listener. v8::Debug::SetDebugEventListener(isolate, nullptr); CheckDebuggerUnloaded(isolate); } TEST(DebugStepForBreak) { DebugLocalContext env; v8::Isolate* isolate = env->GetIsolate(); v8::HandleScope scope(isolate); // Register a debug event listener which steps and counts. v8::Debug::SetDebugEventListener(isolate, DebugEventStep); v8::Local context = env.context(); // Create a function for testing stepping. Run it to allow it to get // optimized. const int argc = 1; const char* src = "function foo(x) { " " var a = 0;" " var b = 0;" " var c = 0;" " for (var i = 0; i < 1000; i++) {" " a++;" " if (a == x) break;" " b++;" " c++;" " }" " return b;" "}" "foo()"; v8::Local foo = CompileFunction(&env, src, "foo"); v8::Local result; SetBreakPoint(foo, 8); // "var a = 0;" // Each loop generates 5 steps except for the last (when break is executed) // which only generates 4. // Looping 10 times. step_action = StepIn; break_point_hit_count = 0; v8::Local argv_10[argc] = {v8::Number::New(isolate, 10)}; result = foo->Call(context, env->Global(), argc, argv_10).ToLocalChecked(); CHECK_EQ(9, result->Int32Value(context).FromJust()); CHECK_EQ(64, break_point_hit_count); // Looping 100 times. step_action = StepIn; break_point_hit_count = 0; v8::Local argv_100[argc] = {v8::Number::New(isolate, 100)}; result = foo->Call(context, env->Global(), argc, argv_100).ToLocalChecked(); CHECK_EQ(99, result->Int32Value(context).FromJust()); CHECK_EQ(604, break_point_hit_count); // Get rid of the debug event listener. v8::Debug::SetDebugEventListener(isolate, nullptr); CheckDebuggerUnloaded(isolate); } TEST(DebugStepForIn) { DebugLocalContext env; v8::HandleScope scope(env->GetIsolate()); // Register a debug event listener which steps and counts. v8::Debug::SetDebugEventListener(env->GetIsolate(), DebugEventStep); v8::Local context = env.context(); // Create a function for testing stepping. Run it to allow it to get // optimized. v8::Local foo; const char* src_1 = "function foo() { " " var a = [1, 2];" " for (x in a) {" " b = 0;" " }" "}" "foo()"; foo = CompileFunction(&env, src_1, "foo"); SetBreakPoint(foo, 0); // "var a = ..." step_action = StepIn; break_point_hit_count = 0; foo->Call(context, env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(8, break_point_hit_count); // Create a function for testing stepping. Run it to allow it to get // optimized. const char* src_2 = "function foo() { " " var a = {a:[1, 2, 3]};" " for (x in a.a) {" " b = 0;" " }" "}" "foo()"; foo = CompileFunction(&env, src_2, "foo"); SetBreakPoint(foo, 0); // "var a = ..." step_action = StepIn; break_point_hit_count = 0; foo->Call(context, env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(10, break_point_hit_count); // Get rid of the debug event listener. v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr); CheckDebuggerUnloaded(env->GetIsolate()); } TEST(DebugStepWith) { DebugLocalContext env; v8::HandleScope scope(env->GetIsolate()); // Register a debug event listener which steps and counts. v8::Debug::SetDebugEventListener(env->GetIsolate(), DebugEventStep); v8::Local context = env.context(); // Create a function for testing stepping. Run it to allow it to get // optimized. const char* src = "function foo(x) { " " var a = {};" " with (a) {}" " with (b) {}" "}" "foo()"; CHECK(env->Global() ->Set(context, v8_str(env->GetIsolate(), "b"), v8::Object::New(env->GetIsolate())) .FromJust()); v8::Local foo = CompileFunction(&env, src, "foo"); v8::Local result; SetBreakPoint(foo, 8); // "var a = {};" step_action = StepIn; break_point_hit_count = 0; foo->Call(context, env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(4, break_point_hit_count); // Get rid of the debug event listener. v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr); CheckDebuggerUnloaded(env->GetIsolate()); } TEST(DebugConditional) { DebugLocalContext env; v8::Isolate* isolate = env->GetIsolate(); v8::HandleScope scope(isolate); // Register a debug event listener which steps and counts. v8::Debug::SetDebugEventListener(isolate, DebugEventStep); v8::Local context = env.context(); // Create a function for testing stepping. Run it to allow it to get // optimized. const char* src = "function foo(x) { " " return x ? 1 : 2;" "}" "foo()"; v8::Local foo = CompileFunction(&env, src, "foo"); SetBreakPoint(foo, 0); // "var a;" step_action = StepIn; break_point_hit_count = 0; foo->Call(context, env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(2, break_point_hit_count); step_action = StepIn; break_point_hit_count = 0; const int argc = 1; v8::Local argv_true[argc] = {v8::True(isolate)}; foo->Call(context, env->Global(), argc, argv_true).ToLocalChecked(); CHECK_EQ(2, break_point_hit_count); // Get rid of the debug event listener. v8::Debug::SetDebugEventListener(isolate, nullptr); CheckDebuggerUnloaded(isolate); } TEST(StepInOutSimple) { DebugLocalContext env; v8::HandleScope scope(env->GetIsolate()); // Create a function for checking the function when hitting a break point. frame_function_name = CompileFunction(&env, frame_function_name_source, "frame_function_name"); // Register a debug event listener which steps and counts. v8::Debug::SetDebugEventListener(env->GetIsolate(), DebugEventStepSequence); v8::Local context = env.context(); // Create a function for testing stepping. Run it to allow it to get // optimized. const char* src = "function a() {b();c();}; " "function b() {c();}; " "function c() {}; " "a(); b(); c()"; v8::Local a = CompileFunction(&env, src, "a"); SetBreakPoint(a, 0); // Step through invocation of a with step in. step_action = StepIn; break_point_hit_count = 0; expected_step_sequence = "abcbaca"; a->Call(context, env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(StrLength(expected_step_sequence), break_point_hit_count); // Step through invocation of a with step next. step_action = StepNext; break_point_hit_count = 0; expected_step_sequence = "aaa"; a->Call(context, env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(StrLength(expected_step_sequence), break_point_hit_count); // Step through invocation of a with step out. step_action = StepOut; break_point_hit_count = 0; expected_step_sequence = "a"; a->Call(context, env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(StrLength(expected_step_sequence), break_point_hit_count); // Get rid of the debug event listener. v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr); CheckDebuggerUnloaded(env->GetIsolate()); } TEST(StepInOutTree) { DebugLocalContext env; v8::HandleScope scope(env->GetIsolate()); // Create a function for checking the function when hitting a break point. frame_function_name = CompileFunction(&env, frame_function_name_source, "frame_function_name"); // Register a debug event listener which steps and counts. v8::Debug::SetDebugEventListener(env->GetIsolate(), DebugEventStepSequence); v8::Local context = env.context(); // Create a function for testing stepping. Run it to allow it to get // optimized. const char* src = "function a() {b(c(d()),d());c(d());d()}; " "function b(x,y) {c();}; " "function c(x) {}; " "function d() {}; " "a(); b(); c(); d()"; v8::Local a = CompileFunction(&env, src, "a"); SetBreakPoint(a, 0); // Step through invocation of a with step in. step_action = StepIn; break_point_hit_count = 0; expected_step_sequence = "adacadabcbadacada"; a->Call(context, env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(StrLength(expected_step_sequence), break_point_hit_count); // Step through invocation of a with step next. step_action = StepNext; break_point_hit_count = 0; expected_step_sequence = "aaaa"; a->Call(context, env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(StrLength(expected_step_sequence), break_point_hit_count); // Step through invocation of a with step out. step_action = StepOut; break_point_hit_count = 0; expected_step_sequence = "a"; a->Call(context, env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(StrLength(expected_step_sequence), break_point_hit_count); // Get rid of the debug event listener. v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr); CheckDebuggerUnloaded(env->GetIsolate(), true); } TEST(StepInOutBranch) { DebugLocalContext env; v8::HandleScope scope(env->GetIsolate()); // Create a function for checking the function when hitting a break point. frame_function_name = CompileFunction(&env, frame_function_name_source, "frame_function_name"); // Register a debug event listener which steps and counts. v8::Debug::SetDebugEventListener(env->GetIsolate(), DebugEventStepSequence); v8::Local context = env.context(); // Create a function for testing stepping. Run it to allow it to get // optimized. const char* src = "function a() {b(false);c();}; " "function b(x) {if(x){c();};}; " "function c() {}; " "a(); b(); c()"; v8::Local a = CompileFunction(&env, src, "a"); SetBreakPoint(a, 0); // Step through invocation of a. step_action = StepIn; break_point_hit_count = 0; expected_step_sequence = "abbaca"; a->Call(context, env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(StrLength(expected_step_sequence), break_point_hit_count); // Get rid of the debug event listener. v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr); CheckDebuggerUnloaded(env->GetIsolate()); } // Test that step in does not step into native functions. TEST(DebugStepNatives) { DebugLocalContext env; v8::HandleScope scope(env->GetIsolate()); // Create a function for testing stepping. v8::Local foo = CompileFunction( &env, "function foo(){debugger;Math.sin(1);}", "foo"); // Register a debug event listener which steps and counts. v8::Debug::SetDebugEventListener(env->GetIsolate(), DebugEventStep); v8::Local context = env.context(); step_action = StepIn; break_point_hit_count = 0; foo->Call(context, env->Global(), 0, NULL).ToLocalChecked(); // With stepping all break locations are hit. CHECK_EQ(3, break_point_hit_count); v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr); CheckDebuggerUnloaded(env->GetIsolate()); // Register a debug event listener which just counts. v8::Debug::SetDebugEventListener(env->GetIsolate(), DebugEventBreakPointHitCount); break_point_hit_count = 0; foo->Call(context, env->Global(), 0, NULL).ToLocalChecked(); // Without stepping only active break points are hit. CHECK_EQ(1, break_point_hit_count); v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr); CheckDebuggerUnloaded(env->GetIsolate()); } // Test that step in works with function.apply. TEST(DebugStepFunctionApply) { DebugLocalContext env; v8::HandleScope scope(env->GetIsolate()); // Create a function for testing stepping. v8::Local foo = CompileFunction( &env, "function bar(x, y, z) { if (x == 1) { a = y; b = z; } }" "function foo(){ debugger; bar.apply(this, [1,2,3]); }", "foo"); // Register a debug event listener which steps and counts. v8::Debug::SetDebugEventListener(env->GetIsolate(), DebugEventStep); v8::Local context = env.context(); step_action = StepIn; break_point_hit_count = 0; foo->Call(context, env->Global(), 0, NULL).ToLocalChecked(); // With stepping all break locations are hit. CHECK_EQ(7, break_point_hit_count); v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr); CheckDebuggerUnloaded(env->GetIsolate()); // Register a debug event listener which just counts. v8::Debug::SetDebugEventListener(env->GetIsolate(), DebugEventBreakPointHitCount); break_point_hit_count = 0; foo->Call(context, env->Global(), 0, NULL).ToLocalChecked(); // Without stepping only the debugger statement is hit. CHECK_EQ(1, break_point_hit_count); v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr); CheckDebuggerUnloaded(env->GetIsolate()); } // Test that step in works with function.call. TEST(DebugStepFunctionCall) { DebugLocalContext env; v8::Isolate* isolate = env->GetIsolate(); v8::HandleScope scope(isolate); v8::Local context = env.context(); // Create a function for testing stepping. v8::Local foo = CompileFunction( &env, "function bar(x, y, z) { if (x == 1) { a = y; b = z; } }" "function foo(a){ debugger;" " if (a) {" " bar.call(this, 1, 2, 3);" " } else {" " bar.call(this, 0);" " }" "}", "foo"); // Register a debug event listener which steps and counts. v8::Debug::SetDebugEventListener(isolate, DebugEventStep); step_action = StepIn; // Check stepping where the if condition in bar is false. break_point_hit_count = 0; foo->Call(context, env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(6, break_point_hit_count); // Check stepping where the if condition in bar is true. break_point_hit_count = 0; const int argc = 1; v8::Local argv[argc] = {v8::True(isolate)}; foo->Call(context, env->Global(), argc, argv).ToLocalChecked(); CHECK_EQ(8, break_point_hit_count); v8::Debug::SetDebugEventListener(isolate, nullptr); CheckDebuggerUnloaded(isolate); // Register a debug event listener which just counts. v8::Debug::SetDebugEventListener(isolate, DebugEventBreakPointHitCount); break_point_hit_count = 0; foo->Call(context, env->Global(), 0, NULL).ToLocalChecked(); // Without stepping only the debugger statement is hit. CHECK_EQ(1, break_point_hit_count); v8::Debug::SetDebugEventListener(isolate, nullptr); CheckDebuggerUnloaded(isolate); } // Test that step in works with Function.call.apply. TEST(DebugStepFunctionCallApply) { DebugLocalContext env; v8::Isolate* isolate = env->GetIsolate(); v8::HandleScope scope(isolate); v8::Local context = env.context(); // Create a function for testing stepping. v8::Local foo = CompileFunction(&env, "function bar() { }" "function foo(){ debugger;" " Function.call.apply(bar);" " Function.call.apply(Function.call, " "[Function.call, bar]);" "}", "foo"); // Register a debug event listener which steps and counts. v8::Debug::SetDebugEventListener(isolate, DebugEventStep); step_action = StepIn; break_point_hit_count = 0; foo->Call(context, env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(6, break_point_hit_count); v8::Debug::SetDebugEventListener(isolate, nullptr); CheckDebuggerUnloaded(isolate); // Register a debug event listener which just counts. v8::Debug::SetDebugEventListener(isolate, DebugEventBreakPointHitCount); break_point_hit_count = 0; foo->Call(context, env->Global(), 0, NULL).ToLocalChecked(); // Without stepping only the debugger statement is hit. CHECK_EQ(1, break_point_hit_count); v8::Debug::SetDebugEventListener(isolate, nullptr); CheckDebuggerUnloaded(isolate); } // Tests that breakpoint will be hit if it's set in script. TEST(PauseInScript) { DebugLocalContext env; v8::HandleScope scope(env->GetIsolate()); env.ExposeDebug(); // Register a debug event listener which counts. v8::Debug::SetDebugEventListener(env->GetIsolate(), DebugEventCounter); v8::Local context = env.context(); // Create a script that returns a function. const char* src = "(function (evt) {})"; const char* script_name = "StepInHandlerTest"; v8::ScriptOrigin origin(v8_str(env->GetIsolate(), script_name), v8::Integer::New(env->GetIsolate(), 0)); v8::Local script = v8::Script::Compile(context, v8_str(env->GetIsolate(), src), &origin) .ToLocalChecked(); // Set breakpoint in the script. SetScriptBreakPointByNameFromJS(env->GetIsolate(), script_name, 0, -1); break_point_hit_count = 0; v8::Local r = script->Run(context).ToLocalChecked(); CHECK(r->IsFunction()); CHECK_EQ(1, break_point_hit_count); // Get rid of the debug event listener. v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr); CheckDebuggerUnloaded(env->GetIsolate()); } static void DebugEventCounterCheck(int caught, int uncaught, int message) { CHECK_EQ(caught, exception_hit_count); CHECK_EQ(uncaught, uncaught_exception_hit_count); CHECK_EQ(message, message_callback_count); } // Test break on exceptions. For each exception break combination the number // of debug event exception callbacks and message callbacks are collected. The // number of debug event exception callbacks are used to check that the // debugger is called correctly and the number of message callbacks is used to // check that uncaught exceptions are still returned even if there is a break // for them. TEST(BreakOnException) { DebugLocalContext env; v8::HandleScope scope(env->GetIsolate()); env.ExposeDebug(); v8::Local context = env.context(); // Create functions for testing break on exception. CompileFunction(&env, "function throws(){throw 1;}", "throws"); v8::Local caught = CompileFunction(&env, "function caught(){try {throws();} catch(e) {};}", "caught"); v8::Local notCaught = CompileFunction(&env, "function notCaught(){throws();}", "notCaught"); v8::Local notCaughtFinally = CompileFunction( &env, "function notCaughtFinally(){try{throws();}finally{}}", "notCaughtFinally"); // In this edge case, even though this finally does not propagate the // exception, the debugger considers this uncaught, since we want to break // at the first throw for the general case where finally implicitly rethrows. v8::Local edgeCaseFinally = CompileFunction( &env, "function caughtFinally(){L:try{throws();}finally{break L;}}", "caughtFinally"); env->GetIsolate()->AddMessageListener(MessageCallbackCount); v8::Debug::SetDebugEventListener(env->GetIsolate(), DebugEventCounter); // Initial state should be no break on exceptions. DebugEventCounterClear(); MessageCallbackCountClear(); caught->Call(context, env->Global(), 0, NULL).ToLocalChecked(); DebugEventCounterCheck(0, 0, 0); CHECK(notCaught->Call(context, env->Global(), 0, NULL).IsEmpty()); DebugEventCounterCheck(0, 0, 1); CHECK(notCaughtFinally->Call(context, env->Global(), 0, NULL).IsEmpty()); DebugEventCounterCheck(0, 0, 2); edgeCaseFinally->Call(context, env->Global(), 0, NULL).ToLocalChecked(); DebugEventCounterCheck(0, 0, 2); // No break on exception DebugEventCounterClear(); MessageCallbackCountClear(); ChangeBreakOnException(false, false); caught->Call(context, env->Global(), 0, NULL).ToLocalChecked(); DebugEventCounterCheck(0, 0, 0); CHECK(notCaught->Call(context, env->Global(), 0, NULL).IsEmpty()); DebugEventCounterCheck(0, 0, 1); CHECK(notCaughtFinally->Call(context, env->Global(), 0, NULL).IsEmpty()); DebugEventCounterCheck(0, 0, 2); edgeCaseFinally->Call(context, env->Global(), 0, NULL).ToLocalChecked(); DebugEventCounterCheck(0, 0, 2); // Break on uncaught exception DebugEventCounterClear(); MessageCallbackCountClear(); ChangeBreakOnException(false, true); caught->Call(context, env->Global(), 0, NULL).ToLocalChecked(); DebugEventCounterCheck(0, 0, 0); CHECK(notCaught->Call(context, env->Global(), 0, NULL).IsEmpty()); DebugEventCounterCheck(1, 1, 1); CHECK(notCaughtFinally->Call(context, env->Global(), 0, NULL).IsEmpty()); DebugEventCounterCheck(2, 2, 2); edgeCaseFinally->Call(context, env->Global(), 0, NULL).ToLocalChecked(); DebugEventCounterCheck(3, 3, 2); // Break on exception and uncaught exception DebugEventCounterClear(); MessageCallbackCountClear(); ChangeBreakOnException(true, true); caught->Call(context, env->Global(), 0, NULL).ToLocalChecked(); DebugEventCounterCheck(1, 0, 0); CHECK(notCaught->Call(context, env->Global(), 0, NULL).IsEmpty()); DebugEventCounterCheck(2, 1, 1); CHECK(notCaughtFinally->Call(context, env->Global(), 0, NULL).IsEmpty()); DebugEventCounterCheck(3, 2, 2); edgeCaseFinally->Call(context, env->Global(), 0, NULL).ToLocalChecked(); DebugEventCounterCheck(4, 3, 2); // Break on exception DebugEventCounterClear(); MessageCallbackCountClear(); ChangeBreakOnException(true, false); caught->Call(context, env->Global(), 0, NULL).ToLocalChecked(); DebugEventCounterCheck(1, 0, 0); CHECK(notCaught->Call(context, env->Global(), 0, NULL).IsEmpty()); DebugEventCounterCheck(2, 1, 1); CHECK(notCaughtFinally->Call(context, env->Global(), 0, NULL).IsEmpty()); DebugEventCounterCheck(3, 2, 2); edgeCaseFinally->Call(context, env->Global(), 0, NULL).ToLocalChecked(); DebugEventCounterCheck(4, 3, 2); // No break on exception using JavaScript DebugEventCounterClear(); MessageCallbackCountClear(); ChangeBreakOnExceptionFromJS(env->GetIsolate(), false, false); caught->Call(context, env->Global(), 0, NULL).ToLocalChecked(); DebugEventCounterCheck(0, 0, 0); CHECK(notCaught->Call(context, env->Global(), 0, NULL).IsEmpty()); DebugEventCounterCheck(0, 0, 1); CHECK(notCaughtFinally->Call(context, env->Global(), 0, NULL).IsEmpty()); DebugEventCounterCheck(0, 0, 2); edgeCaseFinally->Call(context, env->Global(), 0, NULL).ToLocalChecked(); DebugEventCounterCheck(0, 0, 2); // Break on uncaught exception using JavaScript DebugEventCounterClear(); MessageCallbackCountClear(); ChangeBreakOnExceptionFromJS(env->GetIsolate(), false, true); caught->Call(context, env->Global(), 0, NULL).ToLocalChecked(); DebugEventCounterCheck(0, 0, 0); CHECK(notCaught->Call(context, env->Global(), 0, NULL).IsEmpty()); DebugEventCounterCheck(1, 1, 1); CHECK(notCaughtFinally->Call(context, env->Global(), 0, NULL).IsEmpty()); DebugEventCounterCheck(2, 2, 2); edgeCaseFinally->Call(context, env->Global(), 0, NULL).ToLocalChecked(); DebugEventCounterCheck(3, 3, 2); // Break on exception and uncaught exception using JavaScript DebugEventCounterClear(); MessageCallbackCountClear(); ChangeBreakOnExceptionFromJS(env->GetIsolate(), true, true); caught->Call(context, env->Global(), 0, NULL).ToLocalChecked(); DebugEventCounterCheck(1, 0, 0); CHECK(notCaught->Call(context, env->Global(), 0, NULL).IsEmpty()); DebugEventCounterCheck(2, 1, 1); CHECK(notCaughtFinally->Call(context, env->Global(), 0, NULL).IsEmpty()); DebugEventCounterCheck(3, 2, 2); edgeCaseFinally->Call(context, env->Global(), 0, NULL).ToLocalChecked(); DebugEventCounterCheck(4, 3, 2); // Break on exception using JavaScript DebugEventCounterClear(); MessageCallbackCountClear(); ChangeBreakOnExceptionFromJS(env->GetIsolate(), true, false); caught->Call(context, env->Global(), 0, NULL).ToLocalChecked(); DebugEventCounterCheck(1, 0, 0); CHECK(notCaught->Call(context, env->Global(), 0, NULL).IsEmpty()); DebugEventCounterCheck(2, 1, 1); CHECK(notCaughtFinally->Call(context, env->Global(), 0, NULL).IsEmpty()); DebugEventCounterCheck(3, 2, 2); edgeCaseFinally->Call(context, env->Global(), 0, NULL).ToLocalChecked(); DebugEventCounterCheck(4, 3, 2); // No break on exception using native API DebugEventCounterClear(); MessageCallbackCountClear(); ChangeBreakOnExceptionFromAPI(env->GetIsolate(), v8::debug::NoBreakOnException); caught->Call(context, env->Global(), 0, NULL).ToLocalChecked(); DebugEventCounterCheck(0, 0, 0); CHECK(notCaught->Call(context, env->Global(), 0, NULL).IsEmpty()); DebugEventCounterCheck(0, 0, 1); CHECK(notCaughtFinally->Call(context, env->Global(), 0, NULL).IsEmpty()); DebugEventCounterCheck(0, 0, 2); edgeCaseFinally->Call(context, env->Global(), 0, NULL).ToLocalChecked(); DebugEventCounterCheck(0, 0, 2); // // Break on uncaught exception using native API DebugEventCounterClear(); MessageCallbackCountClear(); ChangeBreakOnExceptionFromAPI(env->GetIsolate(), v8::debug::BreakOnUncaughtException); caught->Call(context, env->Global(), 0, NULL).ToLocalChecked(); DebugEventCounterCheck(0, 0, 0); CHECK(notCaught->Call(context, env->Global(), 0, NULL).IsEmpty()); DebugEventCounterCheck(1, 1, 1); CHECK(notCaughtFinally->Call(context, env->Global(), 0, NULL).IsEmpty()); DebugEventCounterCheck(2, 2, 2); edgeCaseFinally->Call(context, env->Global(), 0, NULL).ToLocalChecked(); DebugEventCounterCheck(3, 3, 2); // // Break on exception and uncaught exception using native API DebugEventCounterClear(); MessageCallbackCountClear(); ChangeBreakOnExceptionFromAPI(env->GetIsolate(), v8::debug::BreakOnAnyException); caught->Call(context, env->Global(), 0, NULL).ToLocalChecked(); DebugEventCounterCheck(1, 0, 0); CHECK(notCaught->Call(context, env->Global(), 0, NULL).IsEmpty()); DebugEventCounterCheck(2, 1, 1); CHECK(notCaughtFinally->Call(context, env->Global(), 0, NULL).IsEmpty()); DebugEventCounterCheck(3, 2, 2); edgeCaseFinally->Call(context, env->Global(), 0, NULL).ToLocalChecked(); DebugEventCounterCheck(4, 3, 2); v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr); CheckDebuggerUnloaded(env->GetIsolate()); env->GetIsolate()->RemoveMessageListeners(MessageCallbackCount); } static void try_finally_original_message(v8::Local message, v8::Local data) { v8::Local context = CcTest::isolate()->GetCurrentContext(); CHECK_EQ(2, message->GetLineNumber(context).FromJust()); CHECK_EQ(2, message->GetStartColumn(context).FromJust()); message_callback_count++; } TEST(TryFinallyOriginalMessage) { // Test that the debugger plays nicely with the pending message. message_callback_count = 0; DebugEventCounterClear(); DebugLocalContext env; v8::Isolate* isolate = CcTest::isolate(); isolate->AddMessageListener(try_finally_original_message); v8::Debug::SetDebugEventListener(isolate, DebugEventCounter); ChangeBreakOnException(true, true); v8::HandleScope scope(isolate); CompileRun( "try {\n" " throw 1;\n" "} finally {\n" "}\n"); DebugEventCounterCheck(1, 1, 1); v8::Debug::SetDebugEventListener(isolate, nullptr); isolate->RemoveMessageListeners(try_finally_original_message); } TEST(EvalJSInDebugEventListenerOnNativeReThrownException) { DebugLocalContext env; v8::HandleScope scope(env->GetIsolate()); env.ExposeDebug(); // Create functions for testing break on exception. v8::Local noThrowJS = CompileFunction( &env, "function noThrowJS(){var a=[1]; a.push(2); return a.length;}", "noThrowJS"); debug_event_listener_callback = noThrowJS; debug_event_listener_callback_result = 2; env->GetIsolate()->AddMessageListener(MessageCallbackCount); v8::Debug::SetDebugEventListener(env->GetIsolate(), DebugEventCounter); // Break on uncaught exception ChangeBreakOnException(false, true); DebugEventCounterClear(); MessageCallbackCountClear(); // ReThrow native error { v8::TryCatch tryCatch(env->GetIsolate()); env->GetIsolate()->ThrowException( v8::Exception::TypeError(v8_str(env->GetIsolate(), "Type error"))); CHECK(tryCatch.HasCaught()); tryCatch.ReThrow(); } CHECK_EQ(1, exception_hit_count); CHECK_EQ(1, uncaught_exception_hit_count); CHECK_EQ(0, message_callback_count); // FIXME: Should it be 1 ? CHECK(!debug_event_listener_callback.IsEmpty()); debug_event_listener_callback.Clear(); } // Test break on exception from compiler errors. When compiling using // v8::Script::Compile there is no JavaScript stack whereas when compiling using // eval there are JavaScript frames. TEST(BreakOnCompileException) { DebugLocalContext env; v8::HandleScope scope(env->GetIsolate()); v8::Local context = env.context(); // For this test, we want to break on uncaught exceptions: ChangeBreakOnException(false, true); // Create a function for checking the function when hitting a break point. frame_count = CompileFunction(&env, frame_count_source, "frame_count"); env->GetIsolate()->AddMessageListener(MessageCallbackCount); v8::Debug::SetDebugEventListener(env->GetIsolate(), DebugEventCounter); DebugEventCounterClear(); MessageCallbackCountClear(); // Check initial state. CHECK_EQ(0, exception_hit_count); CHECK_EQ(0, uncaught_exception_hit_count); CHECK_EQ(0, message_callback_count); CHECK_EQ(-1, last_js_stack_height); // Throws SyntaxError: Unexpected end of input CHECK( v8::Script::Compile(context, v8_str(env->GetIsolate(), "+++")).IsEmpty()); CHECK_EQ(1, exception_hit_count); CHECK_EQ(1, uncaught_exception_hit_count); CHECK_EQ(1, message_callback_count); CHECK_EQ(0, last_js_stack_height); // No JavaScript stack. // Throws SyntaxError: Unexpected identifier CHECK( v8::Script::Compile(context, v8_str(env->GetIsolate(), "x x")).IsEmpty()); CHECK_EQ(2, exception_hit_count); CHECK_EQ(2, uncaught_exception_hit_count); CHECK_EQ(2, message_callback_count); CHECK_EQ(0, last_js_stack_height); // No JavaScript stack. // Throws SyntaxError: Unexpected end of input CHECK(v8::Script::Compile(context, v8_str(env->GetIsolate(), "eval('+++')")) .ToLocalChecked() ->Run(context) .IsEmpty()); CHECK_EQ(3, exception_hit_count); CHECK_EQ(3, uncaught_exception_hit_count); CHECK_EQ(3, message_callback_count); CHECK_EQ(1, last_js_stack_height); // Throws SyntaxError: Unexpected identifier CHECK(v8::Script::Compile(context, v8_str(env->GetIsolate(), "eval('x x')")) .ToLocalChecked() ->Run(context) .IsEmpty()); CHECK_EQ(4, exception_hit_count); CHECK_EQ(4, uncaught_exception_hit_count); CHECK_EQ(4, message_callback_count); CHECK_EQ(1, last_js_stack_height); } TEST(StepWithException) { DebugLocalContext env; v8::HandleScope scope(env->GetIsolate()); // For this test, we want to break on uncaught exceptions: ChangeBreakOnException(false, true); // Create a function for checking the function when hitting a break point. frame_function_name = CompileFunction(&env, frame_function_name_source, "frame_function_name"); // Register a debug event listener which steps and counts. v8::Debug::SetDebugEventListener(env->GetIsolate(), DebugEventStepSequence); v8::Local context = env.context(); // Create functions for testing stepping. const char* src = "function a() { n(); }; " "function b() { c(); }; " "function c() { n(); }; " "function d() { x = 1; try { e(); } catch(x) { x = 2; } }; " "function e() { n(); }; " "function f() { x = 1; try { g(); } catch(x) { x = 2; } }; " "function g() { h(); }; " "function h() { x = 1; throw 1; }; "; // Step through invocation of a. ClearStepping(); v8::Local a = CompileFunction(&env, src, "a"); SetBreakPoint(a, 0); step_action = StepIn; break_point_hit_count = 0; expected_step_sequence = "aa"; CHECK(a->Call(context, env->Global(), 0, NULL).IsEmpty()); CHECK_EQ(StrLength(expected_step_sequence), break_point_hit_count); // Step through invocation of b + c. ClearStepping(); v8::Local b = CompileFunction(&env, src, "b"); SetBreakPoint(b, 0); step_action = StepIn; break_point_hit_count = 0; expected_step_sequence = "bcc"; CHECK(b->Call(context, env->Global(), 0, NULL).IsEmpty()); CHECK_EQ(StrLength(expected_step_sequence), break_point_hit_count); // Step through invocation of d + e. ClearStepping(); v8::Local d = CompileFunction(&env, src, "d"); SetBreakPoint(d, 0); ChangeBreakOnException(false, true); step_action = StepIn; break_point_hit_count = 0; expected_step_sequence = "ddedd"; d->Call(context, env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(StrLength(expected_step_sequence), break_point_hit_count); // Step through invocation of d + e now with break on caught exceptions. ChangeBreakOnException(true, true); step_action = StepIn; break_point_hit_count = 0; expected_step_sequence = "ddeedd"; d->Call(context, env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(StrLength(expected_step_sequence), break_point_hit_count); // Step through invocation of f + g + h. ClearStepping(); v8::Local f = CompileFunction(&env, src, "f"); SetBreakPoint(f, 0); ChangeBreakOnException(false, true); step_action = StepIn; break_point_hit_count = 0; expected_step_sequence = "ffghhff"; f->Call(context, env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(StrLength(expected_step_sequence), break_point_hit_count); // Step through invocation of f + g + h now with break on caught exceptions. ChangeBreakOnException(true, true); step_action = StepIn; break_point_hit_count = 0; expected_step_sequence = "ffghhhff"; f->Call(context, env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(StrLength(expected_step_sequence), break_point_hit_count); // Get rid of the debug event listener. v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr); CheckDebuggerUnloaded(env->GetIsolate()); } TEST(DebugBreak) { i::FLAG_stress_compaction = false; #ifdef VERIFY_HEAP i::FLAG_verify_heap = true; #endif DebugLocalContext env; v8::Isolate* isolate = env->GetIsolate(); v8::HandleScope scope(isolate); // Register a debug event listener which sets the break flag and counts. v8::Debug::SetDebugEventListener(isolate, DebugEventBreak); v8::Local context = env.context(); // Create a function for testing stepping. const char* src = "function f0() {}" "function f1(x1) {}" "function f2(x1,x2) {}" "function f3(x1,x2,x3) {}"; v8::Local f0 = CompileFunction(&env, src, "f0"); v8::Local f1 = CompileFunction(&env, src, "f1"); v8::Local f2 = CompileFunction(&env, src, "f2"); v8::Local f3 = CompileFunction(&env, src, "f3"); // Call the function to make sure it is compiled. v8::Local argv[] = { v8::Number::New(isolate, 1), v8::Number::New(isolate, 1), v8::Number::New(isolate, 1), v8::Number::New(isolate, 1)}; // Call all functions to make sure that they are compiled. f0->Call(context, env->Global(), 0, NULL).ToLocalChecked(); f1->Call(context, env->Global(), 0, NULL).ToLocalChecked(); f2->Call(context, env->Global(), 0, NULL).ToLocalChecked(); f3->Call(context, env->Global(), 0, NULL).ToLocalChecked(); // Set the debug break flag. v8::Debug::DebugBreak(env->GetIsolate()); // Call all functions with different argument count. break_point_hit_count = 0; for (unsigned int i = 0; i < arraysize(argv); i++) { f0->Call(context, env->Global(), i, argv).ToLocalChecked(); f1->Call(context, env->Global(), i, argv).ToLocalChecked(); f2->Call(context, env->Global(), i, argv).ToLocalChecked(); f3->Call(context, env->Global(), i, argv).ToLocalChecked(); } // One break for each function called. CHECK(4 * arraysize(argv) == break_point_hit_count); // Get rid of the debug event listener. v8::Debug::SetDebugEventListener(isolate, nullptr); CheckDebuggerUnloaded(isolate); } // Test to ensure that JavaScript code keeps running while the debug break // through the stack limit flag is set but breaks are disabled. TEST(DisableBreak) { DebugLocalContext env; v8::HandleScope scope(env->GetIsolate()); // Register a debug event listener which sets the break flag and counts. v8::Debug::SetDebugEventListener(env->GetIsolate(), DebugEventCounter); v8::Local context = env.context(); // Create a function for testing stepping. const char* src = "function f() {g()};function g(){i=0; while(i<10){i++}}"; v8::Local f = CompileFunction(&env, src, "f"); // Set, test and cancel debug break. v8::Debug::DebugBreak(env->GetIsolate()); v8::Debug::CancelDebugBreak(env->GetIsolate()); // Set the debug break flag. v8::Debug::DebugBreak(env->GetIsolate()); // Call all functions with different argument count. break_point_hit_count = 0; f->Call(context, env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(1, break_point_hit_count); { v8::Debug::DebugBreak(env->GetIsolate()); i::Isolate* isolate = reinterpret_cast(env->GetIsolate()); v8::internal::DisableBreak disable_break(isolate->debug()); f->Call(context, env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(1, break_point_hit_count); } f->Call(context, env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(2, break_point_hit_count); // Get rid of the debug event listener. v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr); CheckDebuggerUnloaded(env->GetIsolate()); } TEST(DisableDebuggerStatement) { DebugLocalContext env; v8::HandleScope scope(env->GetIsolate()); // Register a debug event listener which sets the break flag and counts. v8::Debug::SetDebugEventListener(env->GetIsolate(), DebugEventCounter); CompileRun("debugger;"); CHECK_EQ(1, break_point_hit_count); // Check that we ignore debugger statement when breakpoints aren't active. i::Isolate* isolate = reinterpret_cast(env->GetIsolate()); isolate->debug()->set_break_points_active(false); CompileRun("debugger;"); CHECK_EQ(1, break_point_hit_count); } static const char* kSimpleExtensionSource = "(function Foo() {" " return 4;" "})() "; // http://crbug.com/28933 // Test that debug break is disabled when bootstrapper is active. TEST(NoBreakWhenBootstrapping) { v8::Isolate* isolate = CcTest::isolate(); v8::HandleScope scope(isolate); // Register a debug event listener which sets the break flag and counts. v8::Debug::SetDebugEventListener(isolate, DebugEventCounter); // Set the debug break flag. v8::Debug::DebugBreak(isolate); break_point_hit_count = 0; { // Create a context with an extension to make sure that some JavaScript // code is executed during bootstrapping. v8::RegisterExtension(new v8::Extension("simpletest", kSimpleExtensionSource)); const char* extension_names[] = { "simpletest" }; v8::ExtensionConfiguration extensions(1, extension_names); v8::HandleScope handle_scope(isolate); v8::Context::New(isolate, &extensions); } // Check that no DebugBreak events occured during the context creation. CHECK_EQ(0, break_point_hit_count); // Get rid of the debug event listener. v8::Debug::SetDebugEventListener(isolate, nullptr); CheckDebuggerUnloaded(isolate); } static void NamedEnum(const v8::PropertyCallbackInfo& info) { v8::Local result = v8::Array::New(info.GetIsolate(), 3); v8::Local context = info.GetIsolate()->GetCurrentContext(); CHECK(result->Set(context, v8::Integer::New(info.GetIsolate(), 0), v8_str(info.GetIsolate(), "a")) .FromJust()); CHECK(result->Set(context, v8::Integer::New(info.GetIsolate(), 1), v8_str(info.GetIsolate(), "b")) .FromJust()); CHECK(result->Set(context, v8::Integer::New(info.GetIsolate(), 2), v8_str(info.GetIsolate(), "c")) .FromJust()); info.GetReturnValue().Set(result); } static void IndexedEnum(const v8::PropertyCallbackInfo& info) { v8::Isolate* isolate = info.GetIsolate(); v8::Local result = v8::Array::New(isolate, 2); v8::Local context = info.GetIsolate()->GetCurrentContext(); CHECK(result->Set(context, v8::Integer::New(isolate, 0), v8::Number::New(isolate, 1)) .FromJust()); CHECK(result->Set(context, v8::Integer::New(isolate, 1), v8::Number::New(isolate, 10)) .FromJust()); info.GetReturnValue().Set(result); } static void NamedGetter(v8::Local name, const v8::PropertyCallbackInfo& info) { if (name->IsSymbol()) return; v8::String::Utf8Value n(v8::Local::Cast(name)); if (strcmp(*n, "a") == 0) { info.GetReturnValue().Set(v8_str(info.GetIsolate(), "AA")); return; } else if (strcmp(*n, "b") == 0) { info.GetReturnValue().Set(v8_str(info.GetIsolate(), "BB")); return; } else if (strcmp(*n, "c") == 0) { info.GetReturnValue().Set(v8_str(info.GetIsolate(), "CC")); return; } else { info.GetReturnValue().SetUndefined(); return; } info.GetReturnValue().Set(name); } static void IndexedGetter(uint32_t index, const v8::PropertyCallbackInfo& info) { info.GetReturnValue().Set(static_cast(index + 1)); } TEST(InterceptorPropertyMirror) { // Create a V8 environment with debug access. DebugLocalContext env; v8::Isolate* isolate = env->GetIsolate(); v8::HandleScope scope(isolate); env.ExposeDebug(); v8::Local context = env.context(); // Create object with named interceptor. v8::Local named = v8::ObjectTemplate::New(isolate); named->SetHandler(v8::NamedPropertyHandlerConfiguration( NamedGetter, NULL, NULL, NULL, NamedEnum)); CHECK(env->Global() ->Set(context, v8_str(isolate, "intercepted_named"), named->NewInstance(context).ToLocalChecked()) .FromJust()); // Create object with indexed interceptor. v8::Local indexed = v8::ObjectTemplate::New(isolate); indexed->SetHandler(v8::IndexedPropertyHandlerConfiguration( IndexedGetter, NULL, NULL, NULL, IndexedEnum)); CHECK(env->Global() ->Set(context, v8_str(isolate, "intercepted_indexed"), indexed->NewInstance(context).ToLocalChecked()) .FromJust()); // Create object with both named and indexed interceptor. v8::Local both = v8::ObjectTemplate::New(isolate); both->SetHandler(v8::NamedPropertyHandlerConfiguration( NamedGetter, NULL, NULL, NULL, NamedEnum)); both->SetHandler(v8::IndexedPropertyHandlerConfiguration( IndexedGetter, NULL, NULL, NULL, IndexedEnum)); CHECK(env->Global() ->Set(context, v8_str(isolate, "intercepted_both"), both->NewInstance(context).ToLocalChecked()) .FromJust()); // Get mirrors for the three objects with interceptor. CompileRun( "var named_mirror = debug.MakeMirror(intercepted_named);" "var indexed_mirror = debug.MakeMirror(intercepted_indexed);" "var both_mirror = debug.MakeMirror(intercepted_both)"); CHECK(CompileRun("named_mirror instanceof debug.ObjectMirror") ->BooleanValue(context) .FromJust()); CHECK(CompileRun("indexed_mirror instanceof debug.ObjectMirror") ->BooleanValue(context) .FromJust()); CHECK(CompileRun("both_mirror instanceof debug.ObjectMirror") ->BooleanValue(context) .FromJust()); // Get the property names from the interceptors CompileRun( "named_names = named_mirror.propertyNames();" "indexed_names = indexed_mirror.propertyNames();" "both_names = both_mirror.propertyNames()"); CHECK_EQ(3, CompileRun("named_names.length")->Int32Value(context).FromJust()); CHECK_EQ(2, CompileRun("indexed_names.length")->Int32Value(context).FromJust()); CHECK_EQ(5, CompileRun("both_names.length")->Int32Value(context).FromJust()); // Check the expected number of properties. const char* source; source = "named_mirror.properties().length"; CHECK_EQ(3, CompileRun(source)->Int32Value(context).FromJust()); source = "indexed_mirror.properties().length"; CHECK_EQ(2, CompileRun(source)->Int32Value(context).FromJust()); source = "both_mirror.properties().length"; CHECK_EQ(5, CompileRun(source)->Int32Value(context).FromJust()); // Get the interceptor properties for the object with only named interceptor. CompileRun("var named_values = named_mirror.properties()"); // Check that the properties are interceptor properties. for (int i = 0; i < 3; i++) { EmbeddedVector buffer; SNPrintF(buffer, "named_values[%d] instanceof debug.PropertyMirror", i); CHECK(CompileRun(buffer.start())->BooleanValue(context).FromJust()); SNPrintF(buffer, "named_values[%d].isNative()", i); CHECK(CompileRun(buffer.start())->BooleanValue(context).FromJust()); } // Get the interceptor properties for the object with only indexed // interceptor. CompileRun("var indexed_values = indexed_mirror.properties()"); // Check that the properties are interceptor properties. for (int i = 0; i < 2; i++) { EmbeddedVector buffer; SNPrintF(buffer, "indexed_values[%d] instanceof debug.PropertyMirror", i); CHECK(CompileRun(buffer.start())->BooleanValue(context).FromJust()); } // Get the interceptor properties for the object with both types of // interceptors. CompileRun("var both_values = both_mirror.properties()"); // Check that the properties are interceptor properties. for (int i = 0; i < 5; i++) { EmbeddedVector buffer; SNPrintF(buffer, "both_values[%d] instanceof debug.PropertyMirror", i); CHECK(CompileRun(buffer.start())->BooleanValue(context).FromJust()); } // Check the property names. source = "both_values[0].name() == '1'"; CHECK(CompileRun(source)->BooleanValue(context).FromJust()); source = "both_values[1].name() == '10'"; CHECK(CompileRun(source)->BooleanValue(context).FromJust()); source = "both_values[2].name() == 'a'"; CHECK(CompileRun(source)->BooleanValue(context).FromJust()); source = "both_values[3].name() == 'b'"; CHECK(CompileRun(source)->BooleanValue(context).FromJust()); source = "both_values[4].name() == 'c'"; CHECK(CompileRun(source)->BooleanValue(context).FromJust()); } TEST(HiddenPrototypePropertyMirror) { // Create a V8 environment with debug access. DebugLocalContext env; v8::Isolate* isolate = env->GetIsolate(); v8::HandleScope scope(isolate); env.ExposeDebug(); v8::Local t0 = v8::FunctionTemplate::New(isolate); t0->InstanceTemplate()->Set(v8_str(isolate, "x"), v8::Number::New(isolate, 0)); v8::Local t1 = v8::FunctionTemplate::New(isolate); t1->SetHiddenPrototype(true); t1->InstanceTemplate()->Set(v8_str(isolate, "y"), v8::Number::New(isolate, 1)); v8::Local t2 = v8::FunctionTemplate::New(isolate); t2->SetHiddenPrototype(true); t2->InstanceTemplate()->Set(v8_str(isolate, "z"), v8::Number::New(isolate, 2)); v8::Local t3 = v8::FunctionTemplate::New(isolate); t3->InstanceTemplate()->Set(v8_str(isolate, "u"), v8::Number::New(isolate, 3)); v8::Local context = env.context(); // Create object and set them on the global object. v8::Local o0 = t0->GetFunction(context) .ToLocalChecked() ->NewInstance(context) .ToLocalChecked(); CHECK(env->Global()->Set(context, v8_str(isolate, "o0"), o0).FromJust()); v8::Local o1 = t1->GetFunction(context) .ToLocalChecked() ->NewInstance(context) .ToLocalChecked(); CHECK(env->Global()->Set(context, v8_str(isolate, "o1"), o1).FromJust()); v8::Local o2 = t2->GetFunction(context) .ToLocalChecked() ->NewInstance(context) .ToLocalChecked(); CHECK(env->Global()->Set(context, v8_str(isolate, "o2"), o2).FromJust()); v8::Local o3 = t3->GetFunction(context) .ToLocalChecked() ->NewInstance(context) .ToLocalChecked(); CHECK(env->Global()->Set(context, v8_str(isolate, "o3"), o3).FromJust()); // Get mirrors for the four objects. CompileRun( "var o0_mirror = debug.MakeMirror(o0);" "var o1_mirror = debug.MakeMirror(o1);" "var o2_mirror = debug.MakeMirror(o2);" "var o3_mirror = debug.MakeMirror(o3)"); CHECK(CompileRun("o0_mirror instanceof debug.ObjectMirror") ->BooleanValue(context) .FromJust()); CHECK(CompileRun("o1_mirror instanceof debug.ObjectMirror") ->BooleanValue(context) .FromJust()); CHECK(CompileRun("o2_mirror instanceof debug.ObjectMirror") ->BooleanValue(context) .FromJust()); CHECK(CompileRun("o3_mirror instanceof debug.ObjectMirror") ->BooleanValue(context) .FromJust()); // Check that each object has one property. CHECK_EQ(1, CompileRun("o0_mirror.propertyNames().length") ->Int32Value(context) .FromJust()); CHECK_EQ(1, CompileRun("o1_mirror.propertyNames().length") ->Int32Value(context) .FromJust()); CHECK_EQ(1, CompileRun("o2_mirror.propertyNames().length") ->Int32Value(context) .FromJust()); CHECK_EQ(1, CompileRun("o3_mirror.propertyNames().length") ->Int32Value(context) .FromJust()); // Set o1 as prototype for o0. o1 has the hidden prototype flag so all // properties on o1 should be seen on o0. CHECK(o0->Set(context, v8_str(isolate, "__proto__"), o1).FromJust()); CHECK_EQ(2, CompileRun("o0_mirror.propertyNames().length") ->Int32Value(context) .FromJust()); CHECK_EQ(0, CompileRun("o0_mirror.property('x').value().value()") ->Int32Value(context) .FromJust()); CHECK_EQ(1, CompileRun("o0_mirror.property('y').value().value()") ->Int32Value(context) .FromJust()); // Set o2 as prototype for o0 (it will end up after o1 as o1 has the hidden // prototype flag. o2 also has the hidden prototype flag so all properties // on o2 should be seen on o0 as well as properties on o1. CHECK(o0->Set(context, v8_str(isolate, "__proto__"), o2).FromJust()); CHECK_EQ(3, CompileRun("o0_mirror.propertyNames().length") ->Int32Value(context) .FromJust()); CHECK_EQ(0, CompileRun("o0_mirror.property('x').value().value()") ->Int32Value(context) .FromJust()); CHECK_EQ(1, CompileRun("o0_mirror.property('y').value().value()") ->Int32Value(context) .FromJust()); CHECK_EQ(2, CompileRun("o0_mirror.property('z').value().value()") ->Int32Value(context) .FromJust()); // Set o3 as prototype for o0 (it will end up after o1 and o2 as both o1 and // o2 has the hidden prototype flag. o3 does not have the hidden prototype // flag so properties on o3 should not be seen on o0 whereas the properties // from o1 and o2 should still be seen on o0. // Final prototype chain: o0 -> o1 -> o2 -> o3 // Hidden prototypes: ^^ ^^ CHECK(o0->Set(context, v8_str(isolate, "__proto__"), o3).FromJust()); CHECK_EQ(3, CompileRun("o0_mirror.propertyNames().length") ->Int32Value(context) .FromJust()); CHECK_EQ(1, CompileRun("o3_mirror.propertyNames().length") ->Int32Value(context) .FromJust()); CHECK_EQ(0, CompileRun("o0_mirror.property('x').value().value()") ->Int32Value(context) .FromJust()); CHECK_EQ(1, CompileRun("o0_mirror.property('y').value().value()") ->Int32Value(context) .FromJust()); CHECK_EQ(2, CompileRun("o0_mirror.property('z').value().value()") ->Int32Value(context) .FromJust()); CHECK(CompileRun("o0_mirror.property('u').isUndefined()") ->BooleanValue(context) .FromJust()); // The prototype (__proto__) for o0 should be o3 as o1 and o2 are hidden. CHECK(CompileRun("o0_mirror.protoObject() == o3_mirror") ->BooleanValue(context) .FromJust()); } static void ProtperyXNativeGetter( v8::Local property, const v8::PropertyCallbackInfo& info) { info.GetReturnValue().Set(10); } TEST(NativeGetterPropertyMirror) { // Create a V8 environment with debug access. DebugLocalContext env; v8::Isolate* isolate = env->GetIsolate(); v8::HandleScope scope(isolate); env.ExposeDebug(); v8::Local context = env.context(); v8::Local name = v8_str(isolate, "x"); // Create object with named accessor. v8::Local named = v8::ObjectTemplate::New(isolate); named->SetAccessor(name, &ProtperyXNativeGetter, NULL, v8::Local(), v8::DEFAULT, v8::None); // Create object with named property getter. CHECK(env->Global() ->Set(context, v8_str(isolate, "instance"), named->NewInstance(context).ToLocalChecked()) .FromJust()); CHECK_EQ(10, CompileRun("instance.x")->Int32Value(context).FromJust()); // Get mirror for the object with property getter. CompileRun("var instance_mirror = debug.MakeMirror(instance);"); CHECK(CompileRun("instance_mirror instanceof debug.ObjectMirror") ->BooleanValue(context) .FromJust()); CompileRun("var named_names = instance_mirror.propertyNames();"); CHECK_EQ(1, CompileRun("named_names.length")->Int32Value(context).FromJust()); CHECK(CompileRun("named_names[0] == 'x'")->BooleanValue(context).FromJust()); CHECK(CompileRun("instance_mirror.property('x').value().isNumber()") ->BooleanValue(context) .FromJust()); CHECK(CompileRun("instance_mirror.property('x').value().value() == 10") ->BooleanValue(context) .FromJust()); } static void ProtperyXNativeGetterThrowingError( v8::Local property, const v8::PropertyCallbackInfo& info) { CompileRun("throw new Error('Error message');"); } TEST(NativeGetterThrowingErrorPropertyMirror) { // Create a V8 environment with debug access. DebugLocalContext env; v8::Isolate* isolate = env->GetIsolate(); v8::HandleScope scope(isolate); env.ExposeDebug(); v8::Local context = env.context(); v8::Local name = v8_str(isolate, "x"); // Create object with named accessor. v8::Local named = v8::ObjectTemplate::New(isolate); named->SetAccessor(name, &ProtperyXNativeGetterThrowingError, NULL, v8::Local(), v8::DEFAULT, v8::None); // Create object with named property getter. CHECK(env->Global() ->Set(context, v8_str(isolate, "instance"), named->NewInstance(context).ToLocalChecked()) .FromJust()); // Get mirror for the object with property getter. CompileRun("var instance_mirror = debug.MakeMirror(instance);"); CHECK(CompileRun("instance_mirror instanceof debug.ObjectMirror") ->BooleanValue(context) .FromJust()); CompileRun("named_names = instance_mirror.propertyNames();"); CHECK_EQ(1, CompileRun("named_names.length")->Int32Value(context).FromJust()); CHECK(CompileRun("named_names[0] == 'x'")->BooleanValue(context).FromJust()); CHECK(CompileRun("instance_mirror.property('x').value().isError()") ->BooleanValue(context) .FromJust()); // Check that the message is that passed to the Error constructor. CHECK( CompileRun( "instance_mirror.property('x').value().message() == 'Error message'") ->BooleanValue(context) .FromJust()); } // Test that hidden properties object is not returned as an unnamed property // among regular properties. // See http://crbug.com/26491 TEST(NoHiddenProperties) { // Create a V8 environment with debug access. DebugLocalContext env; v8::Isolate* isolate = env->GetIsolate(); v8::HandleScope scope(isolate); env.ExposeDebug(); v8::Local context = env.context(); // Create an object in the global scope. const char* source = "var obj = {a: 1};"; v8::Script::Compile(context, v8_str(isolate, source)) .ToLocalChecked() ->Run(context) .ToLocalChecked(); v8::Local obj = v8::Local::Cast( env->Global()->Get(context, v8_str(isolate, "obj")).ToLocalChecked()); // Set a hidden property on the object. obj->SetPrivate( env.context(), v8::Private::New(isolate, v8_str(isolate, "v8::test-debug::a")), v8::Int32::New(isolate, 11)) .FromJust(); // Get mirror for the object with property getter. CompileRun("var obj_mirror = debug.MakeMirror(obj);"); CHECK(CompileRun("obj_mirror instanceof debug.ObjectMirror") ->BooleanValue(context) .FromJust()); CompileRun("var named_names = obj_mirror.propertyNames();"); // There should be exactly one property. But there is also an unnamed // property whose value is hidden properties dictionary. The latter // property should not be in the list of reguar properties. CHECK_EQ(1, CompileRun("named_names.length")->Int32Value(context).FromJust()); CHECK(CompileRun("named_names[0] == 'a'")->BooleanValue(context).FromJust()); CHECK(CompileRun("obj_mirror.property('a').value().value() == 1") ->BooleanValue(context) .FromJust()); // Object created by t0 will become hidden prototype of object 'obj'. v8::Local t0 = v8::FunctionTemplate::New(isolate); t0->InstanceTemplate()->Set(v8_str(isolate, "b"), v8::Number::New(isolate, 2)); t0->SetHiddenPrototype(true); v8::Local t1 = v8::FunctionTemplate::New(isolate); t1->InstanceTemplate()->Set(v8_str(isolate, "c"), v8::Number::New(isolate, 3)); // Create proto objects, add hidden properties to them and set them on // the global object. v8::Local protoObj = t0->GetFunction(context) .ToLocalChecked() ->NewInstance(context) .ToLocalChecked(); protoObj->SetPrivate( env.context(), v8::Private::New(isolate, v8_str(isolate, "v8::test-debug::b")), v8::Int32::New(isolate, 12)) .FromJust(); CHECK(env->Global() ->Set(context, v8_str(isolate, "protoObj"), protoObj) .FromJust()); v8::Local grandProtoObj = t1->GetFunction(context) .ToLocalChecked() ->NewInstance(context) .ToLocalChecked(); grandProtoObj->SetPrivate(env.context(), v8::Private::New( isolate, v8_str(isolate, "v8::test-debug::c")), v8::Int32::New(isolate, 13)) .FromJust(); CHECK(env->Global() ->Set(context, v8_str(isolate, "grandProtoObj"), grandProtoObj) .FromJust()); // Setting prototypes: obj->protoObj->grandProtoObj CHECK(protoObj->Set(context, v8_str(isolate, "__proto__"), grandProtoObj) .FromJust()); CHECK(obj->Set(context, v8_str(isolate, "__proto__"), protoObj).FromJust()); // Get mirror for the object with property getter. CompileRun("var obj_mirror = debug.MakeMirror(obj);"); CHECK(CompileRun("obj_mirror instanceof debug.ObjectMirror") ->BooleanValue(context) .FromJust()); CompileRun("var named_names = obj_mirror.propertyNames();"); // There should be exactly two properties - one from the object itself and // another from its hidden prototype. CHECK_EQ(2, CompileRun("named_names.length")->Int32Value(context).FromJust()); CHECK(CompileRun("named_names.sort(); named_names[0] == 'a' &&" "named_names[1] == 'b'") ->BooleanValue(context) .FromJust()); CHECK(CompileRun("obj_mirror.property('a').value().value() == 1") ->BooleanValue(context) .FromJust()); CHECK(CompileRun("obj_mirror.property('b').value().value() == 2") ->BooleanValue(context) .FromJust()); } TEST(SetDebugEventListenerOnUninitializedVM) { v8::Debug::SetDebugEventListener(CcTest::isolate(), DummyDebugEventListener); } // Source for a JavaScript function which returns the data parameter of a // function called in the context of the debugger. If no data parameter is // passed it throws an exception. static const char* debugger_call_with_data_source = "function debugger_call_with_data(exec_state, data) {" " if (data) return data;" " throw 'No data!'" "}"; v8::Local debugger_call_with_data; // Source for a JavaScript function which returns the data parameter of a // function called in the context of the debugger. If no data parameter is // passed it throws an exception. static const char* debugger_call_with_closure_source = "var x = 3;" "(function (exec_state) {" " if (exec_state.y) return x - 1;" " exec_state.y = x;" " return exec_state.y" "})"; v8::Local debugger_call_with_closure; // Function to retrieve the number of JavaScript frames by calling a JavaScript // in the debugger. static void CheckFrameCount(const v8::FunctionCallbackInfo& args) { v8::Local context = args.GetIsolate()->GetCurrentContext(); CHECK(v8::Debug::Call(context, frame_count).ToLocalChecked()->IsNumber()); CHECK_EQ(args[0]->Int32Value(context).FromJust(), v8::Debug::Call(context, frame_count) .ToLocalChecked() ->Int32Value(context) .FromJust()); } // Function to retrieve the source line of the top JavaScript frame by calling a // JavaScript function in the debugger. static void CheckSourceLine(const v8::FunctionCallbackInfo& args) { v8::Local context = args.GetIsolate()->GetCurrentContext(); CHECK( v8::Debug::Call(context, frame_source_line).ToLocalChecked()->IsNumber()); CHECK_EQ(args[0]->Int32Value(context).FromJust(), v8::Debug::Call(context, frame_source_line) .ToLocalChecked() ->Int32Value(context) .FromJust()); } // Function to test passing an additional parameter to a JavaScript function // called in the debugger. It also tests that functions called in the debugger // can throw exceptions. static void CheckDataParameter( const v8::FunctionCallbackInfo& args) { v8::Local data = v8_str(args.GetIsolate(), "Test"); v8::Local context = args.GetIsolate()->GetCurrentContext(); CHECK(v8::Debug::Call(context, debugger_call_with_data, data) .ToLocalChecked() ->IsString()); for (int i = 0; i < 3; i++) { v8::TryCatch catcher(args.GetIsolate()); CHECK(v8::Debug::Call(context, debugger_call_with_data).IsEmpty()); CHECK(catcher.HasCaught()); CHECK(catcher.Exception()->IsString()); } } // Function to test using a JavaScript with closure in the debugger. static void CheckClosure(const v8::FunctionCallbackInfo& args) { v8::Local context = args.GetIsolate()->GetCurrentContext(); CHECK(v8::Debug::Call(context, debugger_call_with_closure) .ToLocalChecked() ->IsNumber()); CHECK_EQ(3, v8::Debug::Call(context, debugger_call_with_closure) .ToLocalChecked() ->Int32Value(context) .FromJust()); } // Test functions called through the debugger. TEST(CallFunctionInDebugger) { // Create and enter a context with the functions CheckFrameCount, // CheckSourceLine and CheckDataParameter installed. v8::Isolate* isolate = CcTest::isolate(); v8::HandleScope scope(isolate); v8::Local global_template = v8::ObjectTemplate::New(isolate); global_template->Set(v8_str(isolate, "CheckFrameCount"), v8::FunctionTemplate::New(isolate, CheckFrameCount)); global_template->Set(v8_str(isolate, "CheckSourceLine"), v8::FunctionTemplate::New(isolate, CheckSourceLine)); global_template->Set(v8_str(isolate, "CheckDataParameter"), v8::FunctionTemplate::New(isolate, CheckDataParameter)); global_template->Set(v8_str(isolate, "CheckClosure"), v8::FunctionTemplate::New(isolate, CheckClosure)); v8::Local context = v8::Context::New(isolate, NULL, global_template); v8::Context::Scope context_scope(context); // Compile a function for checking the number of JavaScript frames. v8::Script::Compile(context, v8_str(isolate, frame_count_source)) .ToLocalChecked() ->Run(context) .ToLocalChecked(); frame_count = v8::Local::Cast( context->Global() ->Get(context, v8_str(isolate, "frame_count")) .ToLocalChecked()); // Compile a function for returning the source line for the top frame. v8::Script::Compile(context, v8_str(isolate, frame_source_line_source)) .ToLocalChecked() ->Run(context) .ToLocalChecked(); frame_source_line = v8::Local::Cast( context->Global() ->Get(context, v8_str(isolate, "frame_source_line")) .ToLocalChecked()); // Compile a function returning the data parameter. v8::Script::Compile(context, v8_str(isolate, debugger_call_with_data_source)) .ToLocalChecked() ->Run(context) .ToLocalChecked(); debugger_call_with_data = v8::Local::Cast( context->Global() ->Get(context, v8_str(isolate, "debugger_call_with_data")) .ToLocalChecked()); // Compile a function capturing closure. debugger_call_with_closure = v8::Local::Cast( v8::Script::Compile(context, v8_str(isolate, debugger_call_with_closure_source)) .ToLocalChecked() ->Run(context) .ToLocalChecked()); // Calling a function through the debugger returns 0 frames if there are // no JavaScript frames. CHECK(v8::Integer::New(isolate, 0) ->Equals(context, v8::Debug::Call(context, frame_count).ToLocalChecked()) .FromJust()); // Test that the number of frames can be retrieved. v8::Script::Compile(context, v8_str(isolate, "CheckFrameCount(1)")) .ToLocalChecked() ->Run(context) .ToLocalChecked(); v8::Script::Compile(context, v8_str(isolate, "function f() {" " CheckFrameCount(2);" "}; f()")) .ToLocalChecked() ->Run(context) .ToLocalChecked(); // Test that the source line can be retrieved. v8::Script::Compile(context, v8_str(isolate, "CheckSourceLine(0)")) .ToLocalChecked() ->Run(context) .ToLocalChecked(); v8::Script::Compile(context, v8_str(isolate, "function f() {\n" " CheckSourceLine(1)\n" " CheckSourceLine(2)\n" " CheckSourceLine(3)\n" "}; f()")) .ToLocalChecked() ->Run(context) .ToLocalChecked(); // Test that a parameter can be passed to a function called in the debugger. v8::Script::Compile(context, v8_str(isolate, "CheckDataParameter()")) .ToLocalChecked() ->Run(context) .ToLocalChecked(); // Test that a function with closure can be run in the debugger. v8::Script::Compile(context, v8_str(isolate, "CheckClosure()")) .ToLocalChecked() ->Run(context) .ToLocalChecked(); // Test that the source line is correct when there is a line offset. v8::ScriptOrigin origin(v8_str(isolate, "test"), v8::Integer::New(isolate, 7)); v8::Script::Compile(context, v8_str(isolate, "CheckSourceLine(7)"), &origin) .ToLocalChecked() ->Run(context) .ToLocalChecked(); v8::Script::Compile(context, v8_str(isolate, "function f() {\n" " CheckSourceLine(8)\n" " CheckSourceLine(9)\n" " CheckSourceLine(10)\n" "}; f()"), &origin) .ToLocalChecked() ->Run(context) .ToLocalChecked(); } // Test that clearing the debug event listener actually clears all break points // and related information. TEST(DebuggerUnload) { DebugLocalContext env; // Check debugger is unloaded before it is used. CheckDebuggerUnloaded(env->GetIsolate()); // Set a debug event listener. break_point_hit_count = 0; v8::Debug::SetDebugEventListener(env->GetIsolate(), DebugEventBreakPointHitCount); v8::Local context = env.context(); { v8::HandleScope scope(env->GetIsolate()); // Create a couple of functions for the test. v8::Local foo = CompileFunction(&env, "function foo(){x=1}", "foo"); v8::Local bar = CompileFunction(&env, "function bar(){y=2}", "bar"); // Set some break points. SetBreakPoint(foo, 0); SetBreakPoint(foo, 4); SetBreakPoint(bar, 0); SetBreakPoint(bar, 4); // Make sure that the break points are there. break_point_hit_count = 0; foo->Call(context, env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(2, break_point_hit_count); bar->Call(context, env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(4, break_point_hit_count); } // Remove the debug event listener without clearing breakpoints. Do this // outside a handle scope. v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr); CheckDebuggerUnloaded(env->GetIsolate(), true); } int event_listener_hit_count = 0; // Debugger event listener which clears itself while active. static void EventListenerClearingItself( const v8::Debug::EventDetails& details) { event_listener_hit_count++; // Clear debug event listener. v8::Debug::SetDebugEventListener(details.GetIsolate(), nullptr); } // Test clearing the debug message handler while processing a debug event. TEST(DebuggerClearEventListenerWhileActive) { DebugLocalContext env; v8::HandleScope scope(env->GetIsolate()); // Check debugger is unloaded before it is used. CheckDebuggerUnloaded(env->GetIsolate()); // Set a debug event listener. v8::Debug::SetDebugEventListener(env->GetIsolate(), EventListenerClearingItself); // Run code to throw an uncaught exception. This should trigger the listener. CompileRun("throw 1"); // The event listener should have been called. CHECK_EQ(1, event_listener_hit_count); CheckDebuggerUnloaded(env->GetIsolate(), true); } // Test for issue http://code.google.com/p/v8/issues/detail?id=289. // Make sure that DebugGetLoadedScripts doesn't return scripts // with disposed external source. class EmptyExternalStringResource : public v8::String::ExternalStringResource { public: EmptyExternalStringResource() { empty_[0] = 0; } virtual ~EmptyExternalStringResource() {} virtual size_t length() const { return empty_.length(); } virtual const uint16_t* data() const { return empty_.start(); } private: ::v8::internal::EmbeddedVector empty_; }; TEST(DebugScriptLineEndsAreAscending) { DebugLocalContext env; v8::Isolate* isolate = env->GetIsolate(); v8::HandleScope scope(isolate); env.ExposeDebug(); // Compile a test script. v8::Local script = v8_str(isolate, "function f() {\n" " debugger;\n" "}\n"); v8::ScriptOrigin origin1 = v8::ScriptOrigin(v8_str(isolate, "name")); v8::Local script1 = v8::Script::Compile(env.context(), script, &origin1).ToLocalChecked(); USE(script1); Handle instances; { v8::internal::Debug* debug = CcTest::i_isolate()->debug(); v8::internal::DebugScope debug_scope(debug); CHECK(!debug_scope.failed()); instances = debug->GetLoadedScripts(); } CHECK_GT(instances->length(), 0); for (int i = 0; i < instances->length(); i++) { Handle script = Handle( v8::internal::Script::cast(instances->get(i))); v8::internal::Script::InitLineEnds(script); v8::internal::FixedArray* ends = v8::internal::FixedArray::cast(script->line_ends()); CHECK_GT(ends->length(), 0); int prev_end = -1; for (int j = 0; j < ends->length(); j++) { const int curr_end = v8::internal::Smi::cast(ends->get(j))->value(); CHECK_GT(curr_end, prev_end); prev_end = curr_end; } } } // Test script break points set on lines. TEST(ScriptNameAndData) { DebugLocalContext env; v8::HandleScope scope(env->GetIsolate()); env.ExposeDebug(); // Create functions for retrieving script name and data for the function on // the top frame when hitting a break point. frame_script_name = CompileFunction(&env, frame_script_name_source, "frame_script_name"); v8::Debug::SetDebugEventListener(env->GetIsolate(), DebugEventBreakPointHitCount); v8::Local context = env.context(); // Test function source. v8::Local script = v8_str(env->GetIsolate(), "function f() {\n" " debugger;\n" "}\n"); v8::ScriptOrigin origin1 = v8::ScriptOrigin(v8_str(env->GetIsolate(), "name")); v8::Local script1 = v8::Script::Compile(context, script, &origin1).ToLocalChecked(); script1->Run(context).ToLocalChecked(); v8::Local f; f = v8::Local::Cast( env->Global() ->Get(context, v8_str(env->GetIsolate(), "f")) .ToLocalChecked()); f->Call(context, env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(1, break_point_hit_count); CHECK_EQ(0, strcmp("name", last_script_name_hit)); // Compile the same script again without setting data. As the compilation // cache is disabled when debugging expect the data to be missing. v8::Script::Compile(context, script, &origin1) .ToLocalChecked() ->Run(context) .ToLocalChecked(); f = v8::Local::Cast( env->Global() ->Get(context, v8_str(env->GetIsolate(), "f")) .ToLocalChecked()); f->Call(context, env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(2, break_point_hit_count); CHECK_EQ(0, strcmp("name", last_script_name_hit)); v8::Local data_obj_source = v8_str(env->GetIsolate(), "({ a: 'abc',\n" " b: 123,\n" " toString: function() { return this.a + ' ' + this.b; }\n" "})\n"); v8::Script::Compile(context, data_obj_source) .ToLocalChecked() ->Run(context) .ToLocalChecked(); v8::ScriptOrigin origin2 = v8::ScriptOrigin(v8_str(env->GetIsolate(), "new name")); v8::Local script2 = v8::Script::Compile(context, script, &origin2).ToLocalChecked(); script2->Run(context).ToLocalChecked(); f = v8::Local::Cast( env->Global() ->Get(context, v8_str(env->GetIsolate(), "f")) .ToLocalChecked()); f->Call(context, env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(3, break_point_hit_count); CHECK_EQ(0, strcmp("new name", last_script_name_hit)); v8::Local script3 = v8::Script::Compile(context, script, &origin2).ToLocalChecked(); script3->Run(context).ToLocalChecked(); f = v8::Local::Cast( env->Global() ->Get(context, v8_str(env->GetIsolate(), "f")) .ToLocalChecked()); f->Call(context, env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(4, break_point_hit_count); } static v8::Local expected_context; static v8::Local expected_context_data; // Check that the expected context is the one generating the debug event. static void ContextCheckEventListener( const v8::Debug::EventDetails& event_details) { CHECK(event_details.GetEventContext() == expected_context); CHECK(event_details.GetEventContext()->GetEmbedderData(0)->StrictEquals( expected_context_data)); event_listener_hit_count++; } // Test which creates two contexts and sets different embedder data on each. // Checks that this data is set correctly and that when the debug event // listener is called the expected context is the one active. TEST(ContextData) { v8::Isolate* isolate = CcTest::isolate(); v8::HandleScope scope(isolate); // Create two contexts. v8::Local context_1; v8::Local context_2; v8::Local global_template = v8::Local(); v8::Local global_object = v8::Local(); context_1 = v8::Context::New(isolate, NULL, global_template, global_object); context_2 = v8::Context::New(isolate, NULL, global_template, global_object); v8::Debug::SetDebugEventListener(isolate, ContextCheckEventListener); // Default data value is undefined. CHECK(context_1->GetEmbedderData(0)->IsUndefined()); CHECK(context_2->GetEmbedderData(0)->IsUndefined()); // Set and check different data values. v8::Local data_1 = v8_str(isolate, "1"); v8::Local data_2 = v8_str(isolate, "2"); context_1->SetEmbedderData(0, data_1); context_2->SetEmbedderData(0, data_2); CHECK(context_1->GetEmbedderData(0)->StrictEquals(data_1)); CHECK(context_2->GetEmbedderData(0)->StrictEquals(data_2)); // Simple test function which causes a break. const char* source = "function f() { debugger; }"; // Enter and run function in the first context. { v8::Context::Scope context_scope(context_1); expected_context = context_1; expected_context_data = data_1; v8::Local f = CompileFunction(isolate, source, "f"); f->Call(context_1, context_1->Global(), 0, NULL).ToLocalChecked(); } // Enter and run function in the second context. { v8::Context::Scope context_scope(context_2); expected_context = context_2; expected_context_data = data_2; v8::Local f = CompileFunction(isolate, source, "f"); f->Call(context_2, context_2->Global(), 0, NULL).ToLocalChecked(); } // Two times compile event and two times break event. CHECK_GT(event_listener_hit_count, 3); v8::Debug::SetDebugEventListener(isolate, nullptr); CheckDebuggerUnloaded(isolate); } // Debug event listener which issues a debug break when it hits a break event. static int event_listener_break_hit_count = 0; static void DebugBreakEventListener(const v8::Debug::EventDetails& details) { // Schedule a debug break for break events. if (details.GetEvent() == v8::Break) { event_listener_break_hit_count++; if (event_listener_break_hit_count == 1) { v8::Debug::DebugBreak(details.GetIsolate()); } } } // Test that a debug break can be scheduled while in a event listener. TEST(DebugBreakInEventListener) { i::FLAG_turbo_inlining = false; // Make sure g is not inlined into f. DebugLocalContext env; v8::HandleScope scope(env->GetIsolate()); v8::Debug::SetDebugEventListener(env->GetIsolate(), DebugBreakEventListener); v8::Local context = env.context(); // Test functions. const char* script = "function f() { debugger; g(); } function g() { }"; CompileRun(script); v8::Local f = v8::Local::Cast( env->Global() ->Get(context, v8_str(env->GetIsolate(), "f")) .ToLocalChecked()); v8::Local g = v8::Local::Cast( env->Global() ->Get(context, v8_str(env->GetIsolate(), "g")) .ToLocalChecked()); // Call f then g. The debugger statement in f will cause a break which will // cause another break. f->Call(context, env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(2, event_listener_break_hit_count); // Calling g will not cause any additional breaks. g->Call(context, env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(2, event_listener_break_hit_count); } #ifndef V8_INTERPRETED_REGEXP // Debug event handler which gets the function on the top frame and schedules a // break a number of times. static void DebugEventDebugBreak( const v8::Debug::EventDetails& event_details) { v8::DebugEvent event = event_details.GetEvent(); v8::Local exec_state = event_details.GetExecutionState(); v8::Local context = CcTest::isolate()->GetCurrentContext(); if (event == v8::Break) { break_point_hit_count++; // Get the name of the top frame function. if (!frame_function_name.IsEmpty()) { // Get the name of the function. const int argc = 2; v8::Local argv[argc] = { exec_state, v8::Integer::New(CcTest::isolate(), 0)}; v8::Local result = frame_function_name->Call(context, exec_state, argc, argv) .ToLocalChecked(); if (result->IsUndefined()) { last_function_hit[0] = '\0'; } else { CHECK(result->IsString()); v8::Local function_name( result->ToString(context).ToLocalChecked()); function_name->WriteUtf8(last_function_hit); } } // Keep forcing breaks. if (break_point_hit_count < 20) { v8::Debug::DebugBreak(CcTest::isolate()); } } } TEST(RegExpDebugBreak) { // This test only applies to native regexps. DebugLocalContext env; v8::HandleScope scope(env->GetIsolate()); v8::Local context = env.context(); // Create a function for checking the function when hitting a break point. frame_function_name = CompileFunction(&env, frame_function_name_source, "frame_function_name"); // Test RegExp which matches white spaces and comments at the begining of a // source line. const char* script = "var sourceLineBeginningSkip = /^(?:[ \\v\\h]*(?:\\/\\*.*?\\*\\/)*)*/;\n" "function f(s) { return s.match(sourceLineBeginningSkip)[0].length; }"; v8::Local f = CompileFunction(env->GetIsolate(), script, "f"); const int argc = 1; v8::Local argv[argc] = { v8_str(env->GetIsolate(), " /* xxx */ a=0;")}; v8::Local result = f->Call(context, env->Global(), argc, argv).ToLocalChecked(); CHECK_EQ(12, result->Int32Value(context).FromJust()); v8::Debug::SetDebugEventListener(env->GetIsolate(), DebugEventDebugBreak); v8::Debug::DebugBreak(env->GetIsolate()); result = f->Call(context, env->Global(), argc, argv).ToLocalChecked(); // Check that there was only one break event. Matching RegExp should not // cause Break events. CHECK_EQ(1, break_point_hit_count); CHECK_EQ(0, strcmp("f", last_function_hit)); } #endif // V8_INTERPRETED_REGEXP // Test which creates a context and sets embedder data on it. Checks that this // data is set correctly and that when the debug event listener is called for // break event in an eval statement the expected context is the one returned by // Message.GetEventContext. TEST(EvalContextData) { v8::HandleScope scope(CcTest::isolate()); v8::Local context_1; v8::Local global_template = v8::Local(); context_1 = v8::Context::New(CcTest::isolate(), NULL, global_template); v8::Debug::SetDebugEventListener(CcTest::isolate(), ContextCheckEventListener); // Default data value is undefined. CHECK(context_1->GetEmbedderData(0)->IsUndefined()); // Set and check a data value. v8::Local data_1 = v8_str(CcTest::isolate(), "1"); context_1->SetEmbedderData(0, data_1); CHECK(context_1->GetEmbedderData(0)->StrictEquals(data_1)); // Simple test function with eval that causes a break. const char* source = "function f() { eval('debugger;'); }"; // Enter and run function in the context. { v8::Context::Scope context_scope(context_1); expected_context = context_1; expected_context_data = data_1; v8::Local f = CompileFunction(CcTest::isolate(), source, "f"); f->Call(context_1, context_1->Global(), 0, NULL).ToLocalChecked(); } v8::Debug::SetDebugEventListener(CcTest::isolate(), nullptr); // One time compile event and one time break event. CHECK_GT(event_listener_hit_count, 2); CheckDebuggerUnloaded(CcTest::isolate()); } // Debug event listener which counts the after compile events. int after_compile_event_count = 0; static void AfterCompileEventListener(const v8::Debug::EventDetails& details) { // Count the number of scripts collected. if (details.GetEvent() == v8::AfterCompile) { after_compile_event_count++; } } // Tests that after compile event is sent as many times as there are scripts // compiled. TEST(AfterCompileEventWhenEventListenerIsReset) { DebugLocalContext env; v8::HandleScope scope(env->GetIsolate()); v8::Local context = env.context(); const char* script = "var a=1"; v8::Debug::SetDebugEventListener(env->GetIsolate(), AfterCompileEventListener); v8::Script::Compile(context, v8_str(env->GetIsolate(), script)) .ToLocalChecked() ->Run(context) .ToLocalChecked(); v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr); v8::Debug::SetDebugEventListener(env->GetIsolate(), AfterCompileEventListener); v8::Debug::DebugBreak(env->GetIsolate()); v8::Script::Compile(context, v8_str(env->GetIsolate(), script)) .ToLocalChecked() ->Run(context) .ToLocalChecked(); // Setting listener to NULL should cause debugger unload. v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr); CheckDebuggerUnloaded(env->GetIsolate()); // Compilation cache should be disabled when debugger is active. CHECK_EQ(2, after_compile_event_count); } // Syntax error event handler which counts a number of events. int compile_error_event_count = 0; static void CompileErrorEventCounterClear() { compile_error_event_count = 0; } static void CompileErrorEventCounter( const v8::Debug::EventDetails& event_details) { v8::DebugEvent event = event_details.GetEvent(); if (event == v8::CompileError) { compile_error_event_count++; } } // Tests that syntax error event is sent as many times as there are scripts // with syntax error compiled. TEST(SyntaxErrorEventOnSyntaxException) { DebugLocalContext env; v8::HandleScope scope(env->GetIsolate()); // For this test, we want to break on uncaught exceptions: ChangeBreakOnException(false, true); v8::Debug::SetDebugEventListener(env->GetIsolate(), CompileErrorEventCounter); v8::Local context = env.context(); CompileErrorEventCounterClear(); // Check initial state. CHECK_EQ(0, compile_error_event_count); // Throws SyntaxError: Unexpected end of input CHECK( v8::Script::Compile(context, v8_str(env->GetIsolate(), "+++")).IsEmpty()); CHECK_EQ(1, compile_error_event_count); CHECK(v8::Script::Compile(context, v8_str(env->GetIsolate(), "/sel\\/: \\")) .IsEmpty()); CHECK_EQ(2, compile_error_event_count); v8::Local script = v8::Script::Compile(context, v8_str(env->GetIsolate(), "JSON.parse('1234:')")) .ToLocalChecked(); CHECK_EQ(2, compile_error_event_count); CHECK(script->Run(context).IsEmpty()); CHECK_EQ(3, compile_error_event_count); v8::Script::Compile(context, v8_str(env->GetIsolate(), "new RegExp('/\\/\\\\');")) .ToLocalChecked(); CHECK_EQ(3, compile_error_event_count); v8::Script::Compile(context, v8_str(env->GetIsolate(), "throw 1;")) .ToLocalChecked(); CHECK_EQ(3, compile_error_event_count); } // Tests that break event is sent when event listener is reset. TEST(BreakEventWhenEventListenerIsReset) { DebugLocalContext env; v8::HandleScope scope(env->GetIsolate()); v8::Local context = env.context(); const char* script = "function f() {};"; v8::Debug::SetDebugEventListener(env->GetIsolate(), AfterCompileEventListener); v8::Script::Compile(context, v8_str(env->GetIsolate(), script)) .ToLocalChecked() ->Run(context) .ToLocalChecked(); v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr); v8::Debug::SetDebugEventListener(env->GetIsolate(), AfterCompileEventListener); v8::Debug::DebugBreak(env->GetIsolate()); v8::Local f = v8::Local::Cast( env->Global() ->Get(context, v8_str(env->GetIsolate(), "f")) .ToLocalChecked()); f->Call(context, env->Global(), 0, NULL).ToLocalChecked(); // Setting event listener to NULL should cause debugger unload. v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr); CheckDebuggerUnloaded(env->GetIsolate()); // Compilation cache should be disabled when debugger is active. CHECK_EQ(1, after_compile_event_count); } static int exception_event_count = 0; static void ExceptionEventListener(const v8::Debug::EventDetails& details) { if (details.GetEvent() == v8::Exception) exception_event_count++; } // Tests that exception event is sent when event listener is reset. TEST(ExceptionEventWhenEventListenerIsReset) { DebugLocalContext env; v8::HandleScope scope(env->GetIsolate()); v8::Local context = env.context(); // For this test, we want to break on uncaught exceptions: ChangeBreakOnException(false, true); exception_event_count = 0; const char* script = "function f() {throw new Error()};"; v8::Debug::SetDebugEventListener(env->GetIsolate(), AfterCompileEventListener); v8::Script::Compile(context, v8_str(env->GetIsolate(), script)) .ToLocalChecked() ->Run(context) .ToLocalChecked(); v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr); v8::Debug::SetDebugEventListener(env->GetIsolate(), ExceptionEventListener); v8::Local f = v8::Local::Cast( env->Global() ->Get(context, v8_str(env->GetIsolate(), "f")) .ToLocalChecked()); CHECK(f->Call(context, env->Global(), 0, NULL).IsEmpty()); // Setting event listener to NULL should cause debugger unload. v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr); CheckDebuggerUnloaded(env->GetIsolate()); CHECK_EQ(1, exception_event_count); } // Tests after compile event is sent when there are some provisional // breakpoints out of the scripts lines range. TEST(ProvisionalBreakpointOnLineOutOfRange) { DebugLocalContext env; v8::HandleScope scope(env->GetIsolate()); env.ExposeDebug(); const char* script = "function f() {};"; const char* resource_name = "test_resource"; v8::Debug::SetDebugEventListener(env->GetIsolate(), AfterCompileEventListener); v8::Local context = env.context(); // Set a couple of provisional breakpoint on lines out of the script lines // range. int sbp1 = SetScriptBreakPointByNameFromJS(env->GetIsolate(), resource_name, 3, -1 /* no column */); int sbp2 = SetScriptBreakPointByNameFromJS(env->GetIsolate(), resource_name, 5, 5); after_compile_event_count = 0; v8::ScriptOrigin origin(v8_str(env->GetIsolate(), resource_name), v8::Integer::New(env->GetIsolate(), 10), v8::Integer::New(env->GetIsolate(), 1)); // Compile a script whose first line number is greater than the breakpoints' // lines. v8::Script::Compile(context, v8_str(env->GetIsolate(), script), &origin) .ToLocalChecked() ->Run(context) .ToLocalChecked(); // If the script is compiled successfully there is exactly one after compile // event. In case of an exception in debugger code after compile event is not // sent. CHECK_EQ(1, after_compile_event_count); ClearBreakPointFromJS(env->GetIsolate(), sbp1); ClearBreakPointFromJS(env->GetIsolate(), sbp2); v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr); CheckDebuggerUnloaded(env->GetIsolate()); } static void BreakEventListener(const v8::Debug::EventDetails& details) { if (details.GetEvent() == v8::Break) break_point_hit_count++; } // Test that if DebugBreak is forced it is ignored when code from // debug-delay.js is executed. TEST(NoDebugBreakInAfterCompileEventListener) { DebugLocalContext env; v8::HandleScope scope(env->GetIsolate()); v8::Local context = env.context(); // Register a debug event listener which sets the break flag and counts. v8::Debug::SetDebugEventListener(env->GetIsolate(), BreakEventListener); // Set the debug break flag. v8::Debug::DebugBreak(env->GetIsolate()); // Create a function for testing stepping. const char* src = "function f() { eval('var x = 10;'); } "; v8::Local f = CompileFunction(&env, src, "f"); // There should be only one break event. CHECK_EQ(1, break_point_hit_count); // Set the debug break flag again. v8::Debug::DebugBreak(env->GetIsolate()); f->Call(context, env->Global(), 0, NULL).ToLocalChecked(); // There should be one more break event when the script is evaluated in 'f'. CHECK_EQ(2, break_point_hit_count); // Get rid of the debug event listener. v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr); CheckDebuggerUnloaded(env->GetIsolate()); } // Test that the debug break flag works with function.apply. TEST(DebugBreakFunctionApply) { DebugLocalContext env; v8::HandleScope scope(env->GetIsolate()); v8::Local context = env.context(); // Create a function for testing breaking in apply. v8::Local foo = CompileFunction( &env, "function baz(x) { }" "function bar(x) { baz(); }" "function foo(){ bar.apply(this, [1]); }", "foo"); // Register a debug event listener which steps and counts. v8::Debug::SetDebugEventListener(env->GetIsolate(), DebugEventBreakMax); // Set the debug break flag before calling the code using function.apply. v8::Debug::DebugBreak(env->GetIsolate()); // Limit the number of debug breaks. This is a regression test for issue 493 // where this test would enter an infinite loop. break_point_hit_count = 0; max_break_point_hit_count = 10000; // 10000 => infinite loop. foo->Call(context, env->Global(), 0, NULL).ToLocalChecked(); // When keeping the debug break several break will happen. CHECK_GT(break_point_hit_count, 1); v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr); CheckDebuggerUnloaded(env->GetIsolate()); } v8::Local debugee_context; v8::Local debugger_context; // Property getter that checks that current and calling contexts // are both the debugee contexts. static void NamedGetterWithCallingContextCheck( v8::Local name, const v8::PropertyCallbackInfo& info) { CHECK_EQ(0, strcmp(*v8::String::Utf8Value(name), "a")); v8::Local current = info.GetIsolate()->GetCurrentContext(); CHECK(current == debugee_context); CHECK(current != debugger_context); info.GetReturnValue().Set(1); } // Debug event listener that checks if the first argument of a function is // an object with property 'a' == 1. If the property has custom accessor // this handler will eventually invoke it. static void DebugEventGetAtgumentPropertyValue( const v8::Debug::EventDetails& event_details) { v8::DebugEvent event = event_details.GetEvent(); v8::Local exec_state = event_details.GetExecutionState(); if (event == v8::Break) { break_point_hit_count++; CHECK(debugger_context == CcTest::isolate()->GetCurrentContext()); v8::Local func = v8::Local::Cast(CompileRun( "(function(exec_state) {\n" " return (exec_state.frame(0).argumentValue(0).property('a').\n" " value().value() == 1);\n" "})")); const int argc = 1; v8::Local argv[argc] = {exec_state}; v8::Local result = func->Call(debugger_context, exec_state, argc, argv).ToLocalChecked(); CHECK(result->IsTrue()); } } TEST(CallingContextIsNotDebugContext) { v8::internal::Debug* debug = CcTest::i_isolate()->debug(); // Create and enter a debugee context. DebugLocalContext env; v8::Isolate* isolate = env->GetIsolate(); v8::HandleScope scope(isolate); env.ExposeDebug(); // Save handles to the debugger and debugee contexts to be used in // NamedGetterWithCallingContextCheck. debugee_context = env.context(); debugger_context = v8::Utils::ToLocal(debug->debug_context()); // Create object with 'a' property accessor. v8::Local named = v8::ObjectTemplate::New(isolate); named->SetAccessor(v8_str(isolate, "a"), NamedGetterWithCallingContextCheck); CHECK(env->Global() ->Set(debugee_context, v8_str(isolate, "obj"), named->NewInstance(debugee_context).ToLocalChecked()) .FromJust()); // Register the debug event listener v8::Debug::SetDebugEventListener(isolate, DebugEventGetAtgumentPropertyValue); // Create a function that invokes debugger. v8::Local foo = CompileFunction( &env, "function bar(x) { debugger; }" "function foo(){ bar(obj); }", "foo"); break_point_hit_count = 0; foo->Call(debugee_context, env->Global(), 0, NULL).ToLocalChecked(); CHECK_EQ(1, break_point_hit_count); v8::Debug::SetDebugEventListener(isolate, nullptr); debugee_context = v8::Local(); debugger_context = v8::Local(); CheckDebuggerUnloaded(isolate); } TEST(DebugContextIsPreservedBetweenAccesses) { v8::HandleScope scope(CcTest::isolate()); v8::Debug::SetDebugEventListener(CcTest::isolate(), DebugEventBreakPointHitCount); v8::Local context1 = v8::Debug::GetDebugContext(CcTest::isolate()); v8::Local context2 = v8::Debug::GetDebugContext(CcTest::isolate()); CHECK(v8::Utils::OpenHandle(*context1).is_identical_to( v8::Utils::OpenHandle(*context2))); v8::Debug::SetDebugEventListener(CcTest::isolate(), nullptr); } TEST(NoDebugContextWhenDebuggerDisabled) { v8::HandleScope scope(CcTest::isolate()); v8::Local context = v8::Debug::GetDebugContext(CcTest::isolate()); CHECK(context.IsEmpty()); } static v8::Local expected_callback_data; static void DebugEventContextChecker(const v8::Debug::EventDetails& details) { CHECK(details.GetEventContext() == expected_context); CHECK(expected_callback_data->Equals(details.GetEventContext(), details.GetCallbackData()) .FromJust()); } // Check that event details contain context where debug event occured. TEST(DebugEventContext) { v8::Isolate* isolate = CcTest::isolate(); v8::HandleScope scope(isolate); expected_context = v8::Context::New(isolate); expected_callback_data = v8::Int32::New(isolate, 2010); v8::Debug::SetDebugEventListener(isolate, DebugEventContextChecker, expected_callback_data); v8::Context::Scope context_scope(expected_context); v8::Script::Compile(expected_context, v8_str(isolate, "(function(){debugger;})();")) .ToLocalChecked() ->Run(expected_context) .ToLocalChecked(); expected_context.Clear(); v8::Debug::SetDebugEventListener(isolate, nullptr); expected_context_data = v8::Local(); CheckDebuggerUnloaded(isolate); } static bool debug_event_break_deoptimize_done = false; static void DebugEventBreakDeoptimize( const v8::Debug::EventDetails& event_details) { v8::DebugEvent event = event_details.GetEvent(); v8::Local exec_state = event_details.GetExecutionState(); v8::Local context = CcTest::isolate()->GetCurrentContext(); if (event == v8::Break) { if (!frame_function_name.IsEmpty()) { // Get the name of the function. const int argc = 2; v8::Local argv[argc] = { exec_state, v8::Integer::New(CcTest::isolate(), 0)}; v8::Local result = frame_function_name->Call(context, exec_state, argc, argv) .ToLocalChecked(); if (!result->IsUndefined()) { char fn[80]; CHECK(result->IsString()); v8::Local function_name( result->ToString(context).ToLocalChecked()); function_name->WriteUtf8(fn); if (strcmp(fn, "bar") == 0) { i::Deoptimizer::DeoptimizeAll(CcTest::i_isolate()); debug_event_break_deoptimize_done = true; } } } v8::Debug::DebugBreak(CcTest::isolate()); } } // Test deoptimization when execution is broken using the debug break stack // check interrupt. TEST(DeoptimizeDuringDebugBreak) { DebugLocalContext env; v8::HandleScope scope(env->GetIsolate()); env.ExposeDebug(); v8::Local context = env.context(); // Create a function for checking the function when hitting a break point. frame_function_name = CompileFunction(&env, frame_function_name_source, "frame_function_name"); // Set a debug event listener which will keep interrupting execution until // debug break. When inside function bar it will deoptimize all functions. // This tests lazy deoptimization bailout for the stack check, as the first // time in function bar when using debug break and no break points will be at // the initial stack check. v8::Debug::SetDebugEventListener(env->GetIsolate(), DebugEventBreakDeoptimize); // Compile and run function bar which will optimize it for some flag settings. v8::Local f = CompileFunction(&env, "function bar(){}", "bar"); f->Call(context, v8::Undefined(env->GetIsolate()), 0, NULL).ToLocalChecked(); // Set debug break and call bar again. v8::Debug::DebugBreak(env->GetIsolate()); f->Call(context, v8::Undefined(env->GetIsolate()), 0, NULL).ToLocalChecked(); CHECK(debug_event_break_deoptimize_done); v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr); } static void DebugEventBreakWithOptimizedStack( const v8::Debug::EventDetails& event_details) { v8::Isolate* isolate = event_details.GetEventContext()->GetIsolate(); v8::DebugEvent event = event_details.GetEvent(); v8::Local exec_state = event_details.GetExecutionState(); v8::Local context = isolate->GetCurrentContext(); if (event == v8::Break) { if (!frame_function_name.IsEmpty()) { for (int i = 0; i < 2; i++) { const int argc = 2; v8::Local argv[argc] = {exec_state, v8::Integer::New(isolate, i)}; // Get the name of the function in frame i. v8::Local result = frame_function_name->Call(context, exec_state, argc, argv) .ToLocalChecked(); CHECK(result->IsString()); v8::Local function_name( result->ToString(context).ToLocalChecked()); CHECK( function_name->Equals(context, v8_str(isolate, "loop")).FromJust()); // Get the name of the first argument in frame i. result = frame_argument_name->Call(context, exec_state, argc, argv) .ToLocalChecked(); CHECK(result->IsString()); v8::Local argument_name( result->ToString(context).ToLocalChecked()); CHECK(argument_name->Equals(context, v8_str(isolate, "count")) .FromJust()); // Get the value of the first argument in frame i. If the // function is optimized the value will be undefined, otherwise // the value will be '1 - i'. // // TODO(3141533): We should be able to get the real value for // optimized frames. result = frame_argument_value->Call(context, exec_state, argc, argv) .ToLocalChecked(); CHECK(result->IsUndefined() || (result->Int32Value(context).FromJust() == 1 - i)); // Get the name of the first local variable. result = frame_local_name->Call(context, exec_state, argc, argv) .ToLocalChecked(); CHECK(result->IsString()); v8::Local local_name( result->ToString(context).ToLocalChecked()); CHECK(local_name->Equals(context, v8_str(isolate, "local")).FromJust()); // Get the value of the first local variable. If the function // is optimized the value will be undefined, otherwise it will // be 42. // // TODO(3141533): We should be able to get the real value for // optimized frames. result = frame_local_value->Call(context, exec_state, argc, argv) .ToLocalChecked(); CHECK(result->IsUndefined() || (result->Int32Value(context).FromJust() == 42)); } } } } static void ScheduleBreak(const v8::FunctionCallbackInfo& args) { v8::Debug::SetDebugEventListener(args.GetIsolate(), DebugEventBreakWithOptimizedStack); v8::Debug::DebugBreak(args.GetIsolate()); } TEST(DebugBreakStackInspection) { DebugLocalContext env; v8::HandleScope scope(env->GetIsolate()); v8::Local context = env.context(); frame_function_name = CompileFunction(&env, frame_function_name_source, "frame_function_name"); frame_argument_name = CompileFunction(&env, frame_argument_name_source, "frame_argument_name"); frame_argument_value = CompileFunction(&env, frame_argument_value_source, "frame_argument_value"); frame_local_name = CompileFunction(&env, frame_local_name_source, "frame_local_name"); frame_local_value = CompileFunction(&env, frame_local_value_source, "frame_local_value"); v8::Local schedule_break_template = v8::FunctionTemplate::New(env->GetIsolate(), ScheduleBreak); v8::Local schedule_break = schedule_break_template->GetFunction(context).ToLocalChecked(); CHECK(env->Global() ->Set(context, v8_str("scheduleBreak"), schedule_break) .FromJust()); const char* src = "function loop(count) {" " var local = 42;" " if (count < 1) { scheduleBreak(); loop(count + 1); }" "}" "loop(0);"; v8::Script::Compile(context, v8_str(env->GetIsolate(), src)) .ToLocalChecked() ->Run(context) .ToLocalChecked(); } // Test that setting the terminate execution flag during debug break processing. static void TestDebugBreakInLoop(const char* loop_head, const char** loop_bodies, const char* loop_tail) { // Receive 10 breaks for each test and then terminate JavaScript execution. static const int kBreaksPerTest = 10; for (int i = 0; loop_bodies[i] != NULL; i++) { // Perform a lazy deoptimization after various numbers of breaks // have been hit. EmbeddedVector buffer; SNPrintF(buffer, "function f() {%s%s%s}", loop_head, loop_bodies[i], loop_tail); i::PrintF("%s\n", buffer.start()); for (int j = 0; j < 3; j++) { break_point_hit_count_deoptimize = j; if (j == 2) { break_point_hit_count_deoptimize = kBreaksPerTest; } break_point_hit_count = 0; max_break_point_hit_count = kBreaksPerTest; terminate_after_max_break_point_hit = true; // Function with infinite loop. CompileRun(buffer.start()); // Set the debug break to enter the debugger as soon as possible. v8::Debug::DebugBreak(CcTest::isolate()); // Call function with infinite loop. CompileRun("f();"); CHECK_EQ(kBreaksPerTest, break_point_hit_count); CHECK(!CcTest::isolate()->IsExecutionTerminating()); } } } static const char* loop_bodies_1[] = {"", "g()", "if (a == 0) { g() }", "if (a == 1) { g() }", "if (a == 0) { g() } else { h() }", "if (a == 0) { continue }", NULL}; static const char* loop_bodies_2[] = { "if (a == 1) { continue }", "switch (a) { case 1: g(); }", "switch (a) { case 1: continue; }", "switch (a) { case 1: g(); break; default: h() }", "switch (a) { case 1: continue; break; default: h() }", NULL}; void DebugBreakLoop(const char* loop_header, const char** loop_bodies, const char* loop_footer) { DebugLocalContext env; v8::HandleScope scope(env->GetIsolate()); // Register a debug event listener which sets the break flag and counts. v8::Debug::SetDebugEventListener(env->GetIsolate(), DebugEventBreakMax); CompileRun( "var a = 1;\n" "function g() { }\n" "function h() { }"); TestDebugBreakInLoop(loop_header, loop_bodies, loop_footer); // Get rid of the debug event listener. v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr); CheckDebuggerUnloaded(env->GetIsolate()); } TEST(DebugBreakInWhileTrue1) { DebugBreakLoop("while (true) {", loop_bodies_1, "}"); } TEST(DebugBreakInWhileTrue2) { DebugBreakLoop("while (true) {", loop_bodies_2, "}"); } TEST(DebugBreakInWhileCondition1) { DebugBreakLoop("while (a == 1) {", loop_bodies_1, "}"); } TEST(DebugBreakInWhileCondition2) { DebugBreakLoop("while (a == 1) {", loop_bodies_2, "}"); } TEST(DebugBreakInDoWhileTrue1) { DebugBreakLoop("do {", loop_bodies_1, "} while (true)"); } TEST(DebugBreakInDoWhileTrue2) { DebugBreakLoop("do {", loop_bodies_2, "} while (true)"); } TEST(DebugBreakInDoWhileCondition1) { DebugBreakLoop("do {", loop_bodies_1, "} while (a == 1)"); } TEST(DebugBreakInDoWhileCondition2) { DebugBreakLoop("do {", loop_bodies_2, "} while (a == 1)"); } TEST(DebugBreakInFor1) { DebugBreakLoop("for (;;) {", loop_bodies_1, "}"); } TEST(DebugBreakInFor2) { DebugBreakLoop("for (;;) {", loop_bodies_2, "}"); } TEST(DebugBreakInForCondition1) { DebugBreakLoop("for (;a == 1;) {", loop_bodies_1, "}"); } TEST(DebugBreakInForCondition2) { DebugBreakLoop("for (;a == 1;) {", loop_bodies_2, "}"); } v8::Local inline_script; static void DebugBreakInlineListener( const v8::Debug::EventDetails& event_details) { v8::DebugEvent event = event_details.GetEvent(); v8::Local context = CcTest::isolate()->GetCurrentContext(); if (event != v8::Break) return; int expected_frame_count = 4; int expected_line_number[] = {1, 4, 7, 12}; i::Handle compiled_script = v8::Utils::OpenHandle(*inline_script); i::Handle source_script = i::Handle(i::Script::cast( i::JSFunction::cast(*compiled_script)->shared()->script())); int break_id = CcTest::i_isolate()->debug()->break_id(); char script[128]; i::Vector script_vector(script, sizeof(script)); SNPrintF(script_vector, "%%GetFrameCount(%d)", break_id); v8::Local result = CompileRun(script); int frame_count = result->Int32Value(context).FromJust(); CHECK_EQ(expected_frame_count, frame_count); for (int i = 0; i < frame_count; i++) { // The 6. element in the returned array of GetFrameDetails contains the // source position of that frame. SNPrintF(script_vector, "%%GetFrameDetails(%d, %d)[6]", break_id, i); v8::Local result = CompileRun(script); CHECK_EQ(expected_line_number[i], i::Script::GetLineNumber(source_script, result->Int32Value(context).FromJust())); } v8::Debug::SetDebugEventListener(CcTest::isolate(), nullptr); CcTest::isolate()->TerminateExecution(); } TEST(DebugBreakInline) { i::FLAG_allow_natives_syntax = true; DebugLocalContext env; v8::HandleScope scope(env->GetIsolate()); v8::Local context = env.context(); const char* source = "function debug(b) { \n" " if (b) debugger; \n" "} \n" "function f(b) { \n" " debug(b) \n" "}; \n" "function g(b) { \n" " f(b); \n" "}; \n" "g(false); \n" "g(false); \n" "%OptimizeFunctionOnNextCall(g); \n" "g(true);"; v8::Debug::SetDebugEventListener(env->GetIsolate(), DebugBreakInlineListener); inline_script = v8::Script::Compile(context, v8_str(env->GetIsolate(), source)) .ToLocalChecked(); inline_script->Run(context).ToLocalChecked(); } static void DebugEventStepNext( const v8::Debug::EventDetails& event_details) { v8::DebugEvent event = event_details.GetEvent(); if (event == v8::Break) { PrepareStep(StepNext); } } static void RunScriptInANewCFrame(const char* source) { v8::TryCatch try_catch(CcTest::isolate()); CompileRun(source); CHECK(try_catch.HasCaught()); } TEST(Regress131642) { // Bug description: // When doing StepNext through the first script, the debugger is not reset // after exiting through exception. A flawed implementation enabling the // debugger to step into Array.prototype.forEach breaks inside the callback // for forEach in the second script under the assumption that we are in a // recursive call. In an attempt to step out, we crawl the stack using the // recorded frame pointer from the first script and fail when not finding it // on the stack. DebugLocalContext env; v8::HandleScope scope(env->GetIsolate()); v8::Debug::SetDebugEventListener(env->GetIsolate(), DebugEventStepNext); // We step through the first script. It exits through an exception. We run // this inside a new frame to record a different FP than the second script // would expect. const char* script_1 = "debugger; throw new Error();"; RunScriptInANewCFrame(script_1); // The second script uses forEach. const char* script_2 = "[0].forEach(function() { });"; CompileRun(script_2); v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr); } // Import from test-heap.cc namespace v8 { namespace internal { int CountNativeContexts(); } } static void NopListener(const v8::Debug::EventDetails& event_details) { } TEST(DebuggerCreatesContextIffActive) { DebugLocalContext env; v8::HandleScope scope(env->GetIsolate()); CHECK_EQ(1, v8::internal::CountNativeContexts()); v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr); CompileRun("debugger;"); CHECK_EQ(1, v8::internal::CountNativeContexts()); v8::Debug::SetDebugEventListener(env->GetIsolate(), NopListener); CompileRun("debugger;"); CHECK_EQ(2, v8::internal::CountNativeContexts()); v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr); } TEST(LiveEditEnabled) { v8::internal::FLAG_allow_natives_syntax = true; LocalContext env; v8::HandleScope scope(env->GetIsolate()); v8::Debug::SetLiveEditEnabled(env->GetIsolate(), true); CompileRun("%LiveEditCompareStrings('', '')"); } TEST(LiveEditDisabled) { v8::internal::FLAG_allow_natives_syntax = true; LocalContext env; v8::HandleScope scope(env->GetIsolate()); v8::Debug::SetLiveEditEnabled(env->GetIsolate(), false); CompileRun("%LiveEditCompareStrings('', '')"); } TEST(PrecompiledFunction) { // Regression test for crbug.com/346207. If we have preparse data, parsing the // function in the presence of the debugger (and breakpoints) should still // succeed. The bug was that preparsing was done lazily and parsing was done // eagerly, so, the symbol streams didn't match. DebugLocalContext env; v8::HandleScope scope(env->GetIsolate()); env.ExposeDebug(); v8::Debug::SetDebugEventListener(env->GetIsolate(), DebugBreakInlineListener); v8::Local break_here = CompileFunction(&env, "function break_here(){}", "break_here"); SetBreakPoint(break_here, 0); const char* source = "var a = b = c = 1; \n" "function this_is_lazy() { \n" // This symbol won't appear in the preparse data. " var a; \n" "} \n" "function bar() { \n" " return \"bar\"; \n" "}; \n" "a = b = c = 2; \n" "bar(); \n"; v8::Local result = ParserCacheCompileRun(source); CHECK(result->IsString()); v8::String::Utf8Value utf8(result); CHECK_EQ(0, strcmp("bar", *utf8)); v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr); CheckDebuggerUnloaded(env->GetIsolate()); } static void DebugBreakStackTraceListener( const v8::Debug::EventDetails& event_details) { v8::StackTrace::CurrentStackTrace(CcTest::isolate(), 10); } static void AddDebugBreak(const v8::FunctionCallbackInfo& args) { v8::Debug::DebugBreak(args.GetIsolate()); } TEST(DebugBreakStackTrace) { DebugLocalContext env; v8::HandleScope scope(env->GetIsolate()); v8::Debug::SetDebugEventListener(env->GetIsolate(), DebugBreakStackTraceListener); v8::Local context = env.context(); v8::Local add_debug_break_template = v8::FunctionTemplate::New(env->GetIsolate(), AddDebugBreak); v8::Local add_debug_break = add_debug_break_template->GetFunction(context).ToLocalChecked(); CHECK(env->Global() ->Set(context, v8_str("add_debug_break"), add_debug_break) .FromJust()); CompileRun("(function loop() {" " for (var j = 0; j < 1000; j++) {" " for (var i = 0; i < 1000; i++) {" " if (i == 999) add_debug_break();" " }" " }" "})()"); } v8::base::Semaphore terminate_requested_semaphore(0); v8::base::Semaphore terminate_fired_semaphore(0); bool terminate_already_fired = false; static void DebugBreakTriggerTerminate( const v8::Debug::EventDetails& event_details) { if (event_details.GetEvent() != v8::Break || terminate_already_fired) return; terminate_requested_semaphore.Signal(); // Wait for at most 2 seconds for the terminate request. CHECK(terminate_fired_semaphore.WaitFor(v8::base::TimeDelta::FromSeconds(2))); terminate_already_fired = true; } class TerminationThread : public v8::base::Thread { public: explicit TerminationThread(v8::Isolate* isolate) : Thread(Options("terminator")), isolate_(isolate) {} virtual void Run() { terminate_requested_semaphore.Wait(); isolate_->TerminateExecution(); terminate_fired_semaphore.Signal(); } private: v8::Isolate* isolate_; }; TEST(DebugBreakOffThreadTerminate) { DebugLocalContext env; v8::Isolate* isolate = env->GetIsolate(); v8::HandleScope scope(isolate); v8::Debug::SetDebugEventListener(isolate, DebugBreakTriggerTerminate); TerminationThread terminator(isolate); terminator.Start(); v8::TryCatch try_catch(env->GetIsolate()); v8::Debug::DebugBreak(isolate); CompileRun("while (true);"); CHECK(try_catch.HasTerminated()); } static void DebugEventExpectNoException( const v8::Debug::EventDetails& event_details) { v8::DebugEvent event = event_details.GetEvent(); CHECK_NE(v8::Exception, event); } static void TryCatchWrappedThrowCallback( const v8::FunctionCallbackInfo& args) { v8::TryCatch try_catch(args.GetIsolate()); CompileRun("throw 'rejection';"); CHECK(try_catch.HasCaught()); } TEST(DebugPromiseInterceptedByTryCatch) { DebugLocalContext env; v8::Isolate* isolate = env->GetIsolate(); v8::HandleScope scope(isolate); v8::Debug::SetDebugEventListener(isolate, &DebugEventExpectNoException); v8::Local context = env.context(); ChangeBreakOnException(false, true); v8::Local fun = v8::FunctionTemplate::New(isolate, TryCatchWrappedThrowCallback); CHECK(env->Global() ->Set(context, v8_str("fun"), fun->GetFunction(context).ToLocalChecked()) .FromJust()); CompileRun("var p = new Promise(function(res, rej) { fun(); res(); });"); CompileRun( "var r;" "p.then(function() { r = 'resolved'; }," " function() { r = 'rejected'; });"); CHECK(CompileRun("r")->Equals(context, v8_str("resolved")).FromJust()); } static int exception_event_counter = 0; static void DebugEventCountException( const v8::Debug::EventDetails& event_details) { v8::DebugEvent event = event_details.GetEvent(); if (event == v8::Exception) exception_event_counter++; } static void ThrowCallback(const v8::FunctionCallbackInfo& args) { CompileRun("throw 'rejection';"); } TEST(DebugPromiseRejectedByCallback) { DebugLocalContext env; v8::Isolate* isolate = env->GetIsolate(); v8::HandleScope scope(isolate); v8::Debug::SetDebugEventListener(isolate, &DebugEventCountException); v8::Local context = env.context(); ChangeBreakOnException(false, true); exception_event_counter = 0; v8::Local fun = v8::FunctionTemplate::New(isolate, ThrowCallback); CHECK(env->Global() ->Set(context, v8_str("fun"), fun->GetFunction(context).ToLocalChecked()) .FromJust()); CompileRun("var p = new Promise(function(res, rej) { fun(); res(); });"); CompileRun( "var r;" "p.then(function() { r = 'resolved'; }," " function(e) { r = 'rejected' + e; });"); CHECK( CompileRun("r")->Equals(context, v8_str("rejectedrejection")).FromJust()); CHECK_EQ(1, exception_event_counter); } static void DebugHarmonyScopingListener( const v8::Debug::EventDetails& event_details) { v8::DebugEvent event = event_details.GetEvent(); if (event != v8::Break) return; int break_id = CcTest::i_isolate()->debug()->break_id(); char script[128]; i::Vector script_vector(script, sizeof(script)); SNPrintF(script_vector, "%%GetFrameCount(%d)", break_id); ExpectInt32(script, 1); SNPrintF(script_vector, "var frame = new FrameMirror(%d, 0);", break_id); CompileRun(script); ExpectInt32("frame.evaluate('x').value_", 1); ExpectInt32("frame.evaluate('y').value_", 2); CompileRun("var allScopes = frame.allScopes()"); ExpectInt32("allScopes.length", 2); ExpectBoolean("allScopes[0].scopeType() === ScopeType.Script", true); ExpectInt32("allScopes[0].scopeObject().value_.x", 1); ExpectInt32("allScopes[0].scopeObject().value_.y", 2); CompileRun("allScopes[0].setVariableValue('x', 5);"); CompileRun("allScopes[0].setVariableValue('y', 6);"); ExpectInt32("frame.evaluate('x + y').value_", 11); } TEST(DebugBreakInLexicalScopes) { i::FLAG_allow_natives_syntax = true; DebugLocalContext env; v8::Isolate* isolate = env->GetIsolate(); v8::HandleScope scope(isolate); v8::Debug::SetDebugEventListener(isolate, DebugHarmonyScopingListener); CompileRun( "'use strict'; \n" "let x = 1; \n"); ExpectInt32( "'use strict'; \n" "let y = 2; \n" "debugger; \n" "x * y", 30); ExpectInt32( "x = 1; y = 2; \n" "debugger;" "x * y", 30); } static int after_compile_handler_depth = 0; static void HandleInterrupt(v8::Isolate* isolate, void* data) { CHECK_EQ(0, after_compile_handler_depth); } static void NoInterruptsOnDebugEvent( const v8::Debug::EventDetails& event_details) { if (event_details.GetEvent() != v8::AfterCompile) return; ++after_compile_handler_depth; // Do not allow nested AfterCompile events. CHECK(after_compile_handler_depth <= 1); v8::Isolate* isolate = event_details.GetEventContext()->GetIsolate(); isolate->RequestInterrupt(&HandleInterrupt, nullptr); CompileRun("function foo() {}; foo();"); --after_compile_handler_depth; } TEST(NoInterruptsInDebugListener) { DebugLocalContext env; v8::Debug::SetDebugEventListener(env->GetIsolate(), NoInterruptsOnDebugEvent); CompileRun("void(0);"); } TEST(BreakLocationIterator) { DebugLocalContext env; v8::Isolate* isolate = env->GetIsolate(); i::Isolate* i_isolate = reinterpret_cast(isolate); v8::HandleScope scope(isolate); v8::Local result = CompileRun( "function f() {\n" " debugger; \n" " f(); \n" " debugger; \n" "} \n" "f"); Handle function_obj = v8::Utils::OpenHandle(*result); Handle function = Handle::cast(function_obj); Handle shared(function->shared()); EnableDebugger(isolate); CHECK(i_isolate->debug()->EnsureDebugInfo(shared, function)); Handle debug_info(shared->GetDebugInfo()); Handle abstract_code(shared->abstract_code()); { auto iterator = i::BreakIterator::GetIterator(debug_info, abstract_code, i::ALL_BREAK_LOCATIONS); CHECK(iterator->GetBreakLocation().IsDebuggerStatement()); CHECK_EQ(17, iterator->GetBreakLocation().position()); iterator->Next(); CHECK(iterator->GetBreakLocation().IsDebugBreakSlot()); CHECK_EQ(32, iterator->GetBreakLocation().position()); iterator->Next(); CHECK(iterator->GetBreakLocation().IsCall()); CHECK_EQ(32, iterator->GetBreakLocation().position()); iterator->Next(); CHECK(iterator->GetBreakLocation().IsDebuggerStatement()); CHECK_EQ(47, iterator->GetBreakLocation().position()); iterator->Next(); CHECK(iterator->GetBreakLocation().IsReturn()); CHECK_EQ(60, iterator->GetBreakLocation().position()); iterator->Next(); CHECK(iterator->Done()); } { auto iterator = i::BreakIterator::GetIterator(debug_info, abstract_code, i::CALLS_AND_RETURNS); CHECK(iterator->GetBreakLocation().IsCall()); CHECK_EQ(32, iterator->GetBreakLocation().position()); iterator->Next(); CHECK(iterator->GetBreakLocation().IsReturn()); CHECK_EQ(60, iterator->GetBreakLocation().position()); iterator->Next(); CHECK(iterator->Done()); } DisableDebugger(isolate); } TEST(DisableTailCallElimination) { i::FLAG_allow_natives_syntax = true; i::FLAG_harmony_tailcalls = true; // TODO(ishell, 4698): Investigate why TurboFan in --always-opt mode makes // stack[2].getFunctionName() return null. i::FLAG_turbo_inlining = false; DebugLocalContext env; v8::Isolate* isolate = env->GetIsolate(); v8::HandleScope scope(isolate); CHECK(v8::Debug::IsTailCallEliminationEnabled(isolate)); CompileRun( "'use strict'; \n" "Error.prepareStackTrace = (error,stack) => { \n" " error.strace = stack; \n" " return error.message + \"\\n at \" + stack.join(\"\\n at \"); \n" "} \n" " \n" "function getCaller() { \n" " var e = new Error(); \n" " e.stack; // prepare stack trace \n" " var stack = e.strace; \n" " %GlobalPrint('caller: '); \n" " %GlobalPrint(stack[2].getFunctionName()); \n" " %GlobalPrint('\\n'); \n" " return stack[2].getFunctionName(); \n" "} \n" "function f() { \n" " var caller = getCaller(); \n" " if (caller === 'g') return 1; \n" " if (caller === 'h') return 2; \n" " return 0; \n" "} \n" "function g() { \n" " return f(); \n" "} \n" "function h() { \n" " var result = g(); \n" " return result; \n" "} \n" "%NeverOptimizeFunction(getCaller); \n" "%NeverOptimizeFunction(f); \n" "%NeverOptimizeFunction(h); \n" ""); ExpectInt32("h();", 2); ExpectInt32("h(); %OptimizeFunctionOnNextCall(g); h();", 2); v8::Debug::SetTailCallEliminationEnabled(isolate, false); CHECK(!v8::Debug::IsTailCallEliminationEnabled(isolate)); ExpectInt32("h();", 1); ExpectInt32("h(); %OptimizeFunctionOnNextCall(g); h();", 1); v8::Debug::SetTailCallEliminationEnabled(isolate, true); CHECK(v8::Debug::IsTailCallEliminationEnabled(isolate)); ExpectInt32("h();", 2); ExpectInt32("h(); %OptimizeFunctionOnNextCall(g); h();", 2); } TEST(DebugStepNextTailCallEliminiation) { i::FLAG_allow_natives_syntax = true; i::FLAG_harmony_tailcalls = true; // TODO(ishell, 4698): Investigate why TurboFan in --always-opt mode makes // stack[2].getFunctionName() return null. i::FLAG_turbo_inlining = false; DebugLocalContext env; env.ExposeDebug(); v8::Isolate* isolate = env->GetIsolate(); v8::HandleScope scope(isolate); CHECK(v8::Debug::IsTailCallEliminationEnabled(isolate)); const char* source = "'use strict'; \n" "var Debug = debug.Debug; \n" "var exception = null; \n" "var breaks = 0; \n" "var log = []; \n" "function f(x) { \n" " if (x == 2) { \n" " debugger; // Break a \n" " } \n" " if (x-- > 0) { // Break b \n" " return f(x); // Break c \n" " } \n" "} // Break e \n" "function listener(event, exec_state, event_data, data) {\n" " if (event != Debug.DebugEvent.Break) return; \n" " try { \n" " var line = exec_state.frame(0).sourceLineText(); \n" " var col = exec_state.frame(0).sourceColumn(); \n" " var match = line.match(/\\/\\/ Break (\\w)/); \n" " log.push(match[1] + col); \n" " exec_state.prepareStep(Debug.StepAction.StepNext); \n" " } catch (e) { \n" " exception = e; \n" " }; \n" "}; \n" "Debug.setListener(listener); \n" "f(4); \n" "Debug.setListener(null); // Break d \n"; CompileRun(source); ExpectNull("exception"); ExpectString("JSON.stringify(log)", "[\"a4\",\"b2\",\"c4\",\"c11\",\"d0\"]"); v8::Debug::SetTailCallEliminationEnabled(isolate, false); CompileRun( "log = []; \n" "Debug.setListener(listener); \n" "f(5); \n" "Debug.setListener(null); // Break f \n"); ExpectNull("exception"); ExpectString("JSON.stringify(log)", "[\"a4\",\"b2\",\"c4\",\"e0\",\"e0\",\"e0\",\"e0\",\"f0\"]"); } size_t current_action = 0; StepAction actions[] = {StepNext, StepNext}; static void DebugStepOverFunctionWithCaughtExceptionListener( const v8::Debug::EventDetails& event_details) { v8::DebugEvent event = event_details.GetEvent(); if (event != v8::Break) return; ++break_point_hit_count; if (current_action >= 2) return; PrepareStep(actions[current_action]); } TEST(DebugStepOverFunctionWithCaughtException) { i::FLAG_allow_natives_syntax = true; DebugLocalContext env; v8::Isolate* isolate = env->GetIsolate(); v8::HandleScope scope(isolate); v8::Debug::SetDebugEventListener( isolate, DebugStepOverFunctionWithCaughtExceptionListener); break_point_hit_count = 0; CompileRun( "function foo() {\n" " try { throw new Error(); } catch (e) {}\n" "}\n" "debugger;\n" "foo();\n" "foo();\n"); v8::Debug::SetDebugEventListener(env->GetIsolate(), nullptr); CHECK_EQ(break_point_hit_count, 4); }