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v8/test/cctest/cctest.h
Etienne Pierre-doray 1e0d18dc0b [task] Expose CreateJob in v8::Platform 
CreateJob() is similar to PostJob() but doesn't schedule anything
until Join() or Notify*() is called.
This allows
- CreateJob().Join() without too many worker.
- Early 'empty' CreateJob() for initialization
  without causing spurious calls to GetMaxConcurrency()

Bug: chromium:1287665
Change-Id: I8fd8b139392ad30218f0cf8f580b2d76f1078777
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3668842
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Etienne Pierre-Doray <etiennep@chromium.org>
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81166}
2022-06-15 00:13:31 +00:00

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// Copyright 2008 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.
#ifndef CCTEST_H_
#define CCTEST_H_
#include <memory>
#include "include/libplatform/libplatform.h"
#include "include/v8-platform.h"
#include "src/base/enum-set.h"
#include "src/codegen/register-configuration.h"
#include "src/debug/debug-interface.h"
#include "src/execution/isolate.h"
#include "src/execution/simulator.h"
#include "src/flags/flags.h"
#include "src/heap/factory.h"
#include "src/init/v8.h"
#include "src/objects/js-function.h"
#include "src/objects/objects.h"
#include "src/zone/accounting-allocator.h"
namespace v8 {
namespace base {
class RandomNumberGenerator;
} // namespace base
namespace internal {
const auto GetRegConfig = RegisterConfiguration::Default;
class HandleScope;
class Zone;
namespace compiler {
class JSHeapBroker;
} // namespace compiler
} // namespace internal
} // namespace v8
#ifndef TEST
#define TEST(Name) \
static void Test##Name(); \
CcTest register_test_##Name(Test##Name, __FILE__, #Name, true, true, \
nullptr); \
static void Test##Name()
#endif
#ifndef UNINITIALIZED_TEST
#define UNINITIALIZED_TEST(Name) \
static void Test##Name(); \
CcTest register_test_##Name(Test##Name, __FILE__, #Name, true, false, \
nullptr); \
static void Test##Name()
#endif
#ifndef TEST_WITH_PLATFORM
#define TEST_WITH_PLATFORM(Name, PlatformClass) \
static void Test##Name(PlatformClass& platform); \
static void TestWithoutPlatform##Name() { \
Test##Name(*static_cast<PlatformClass*>(i::V8::GetCurrentPlatform())); \
} \
CcTest register_test_##Name(TestWithoutPlatform##Name, __FILE__, #Name, \
true, true, \
[]() -> std::unique_ptr<TestPlatform> { \
return std::make_unique<PlatformClass>(); \
}); \
static void Test##Name(PlatformClass& platform)
#endif
#ifndef DISABLED_TEST
#define DISABLED_TEST(Name) \
static void Test##Name(); \
CcTest register_test_##Name(Test##Name, __FILE__, #Name, false, true, \
nullptr); \
static void Test##Name()
#endif
// Similar to TEST, but used when test definitions appear as members of a
// (probably parameterized) class. This allows re-using the given tests multiple
// times. For this to work, the following conditions must hold:
// 1. The class has a template parameter named kTestFileName of type char
// const*, which is instantiated with __FILE__ at the *use site*, in order
// to correctly associate the tests with the test suite using them.
// 2. To actually execute the tests, create an instance of the class
// containing the MEMBER_TESTs.
#define MEMBER_TEST(Name) \
CcTest register_test_##Name = \
CcTest(Test##Name, kTestFileName, #Name, true, true, nullptr); \
static void Test##Name()
#define EXTENSION_LIST(V) \
V(GC_EXTENSION, "v8/gc") \
V(PRINT_EXTENSION, "v8/print") \
V(PROFILER_EXTENSION, "v8/profiler") \
V(TRACE_EXTENSION, "v8/trace")
#define DEFINE_EXTENSION_ID(Name, Ident) Name##_ID,
enum CcTestExtensionId { EXTENSION_LIST(DEFINE_EXTENSION_ID) kMaxExtensions };
#undef DEFINE_EXTENSION_ID
using CcTestExtensionFlags = v8::base::EnumSet<CcTestExtensionId>;
#define DEFINE_EXTENSION_NAME(Name, Ident) Ident,
static constexpr const char* kExtensionName[kMaxExtensions] = {
EXTENSION_LIST(DEFINE_EXTENSION_NAME)};
#undef DEFINE_EXTENSION_NAME
class CcTest;
class TestPlatform;
using CcTestMapType = std::map<std::string, CcTest*>;
class CcTest {
public:
using TestFunction = void();
using TestPlatformFactory = std::unique_ptr<TestPlatform>();
CcTest(TestFunction* callback, const char* file, const char* name,
bool enabled, bool initialize,
TestPlatformFactory* platform_factory = nullptr);
void Run(const char* argv0);
static v8::Isolate* isolate() {
CHECK_NOT_NULL(isolate_);
v8::base::Relaxed_Store(&isolate_used_, 1);
return isolate_;
}
static i::Isolate* InitIsolateOnce() {
if (!initialize_called_) InitializeVM();
return i_isolate();
}
static i::Isolate* i_isolate() {
return reinterpret_cast<i::Isolate*>(isolate());
}
static i::Heap* heap();
static i::ReadOnlyHeap* read_only_heap();
static v8::Platform* default_platform() { return default_platform_; }
static void AddGlobalFunction(v8::Local<v8::Context> env, const char* name,
v8::FunctionCallback callback);
static void CollectGarbage(i::AllocationSpace space,
i::Isolate* isolate = nullptr);
static void CollectAllGarbage(i::Isolate* isolate = nullptr);
static void CollectAllAvailableGarbage(i::Isolate* isolate = nullptr);
static void PreciseCollectAllGarbage(i::Isolate* isolate = nullptr);
static i::Handle<i::String> MakeString(const char* str);
static i::Handle<i::String> MakeName(const char* str, int suffix);
static v8::base::RandomNumberGenerator* random_number_generator();
static v8::Local<v8::Object> global();
static v8::ArrayBuffer::Allocator* array_buffer_allocator() {
return allocator_;
}
static void set_array_buffer_allocator(
v8::ArrayBuffer::Allocator* allocator) {
allocator_ = allocator;
}
// TODO(dcarney): Remove.
// This must be called first in a test.
static void InitializeVM();
// Helper function to configure a context.
// Must be in a HandleScope.
static v8::Local<v8::Context> NewContext(
v8::Isolate* isolate = CcTest::isolate()) {
return NewContext({}, isolate);
}
static v8::Local<v8::Context> NewContext(
CcTestExtensionFlags extension_flags,
v8::Isolate* isolate = CcTest::isolate());
static v8::Local<v8::Context> NewContext(
std::initializer_list<CcTestExtensionId> extensions,
v8::Isolate* isolate = CcTest::isolate()) {
return NewContext(CcTestExtensionFlags{extensions}, isolate);
}
private:
static std::unordered_map<std::string, CcTest*>* tests_;
static v8::ArrayBuffer::Allocator* allocator_;
static v8::Isolate* isolate_;
static v8::Platform* default_platform_;
static bool initialize_called_;
static v8::base::Atomic32 isolate_used_;
TestFunction* callback_;
bool initialize_;
TestPlatformFactory* test_platform_factory_;
friend int main(int argc, char** argv);
friend class ManualGCScope;
};
// Switches between all the Api tests using the threading support.
// In order to get a surprising but repeatable pattern of thread
// switching it has extra semaphores to control the order in which
// the tests alternate, not relying solely on the big V8 lock.
//
// A test is augmented with calls to ApiTestFuzzer::Fuzz() in its
// callbacks. This will have no effect when we are not running the
// thread fuzzing test. In the thread fuzzing test it will
// pseudorandomly select a successor thread and switch execution
// to that thread, suspending the current test.
class ApiTestFuzzer: public v8::base::Thread {
public:
void CallTest();
// The ApiTestFuzzer is also a Thread, so it has a Run method.
void Run() override;
enum PartOfTest {
FIRST_PART,
SECOND_PART,
THIRD_PART,
FOURTH_PART,
FIFTH_PART,
SIXTH_PART,
SEVENTH_PART,
EIGHTH_PART,
LAST_PART = EIGHTH_PART
};
static void SetUp(PartOfTest part);
static void RunAllTests();
static void TearDown();
// This method switches threads if we are running the Threading test.
// Otherwise it does nothing.
static void Fuzz();
private:
explicit ApiTestFuzzer(int num)
: Thread(Options("ApiTestFuzzer")),
test_number_(num),
gate_(0),
active_(true) {}
~ApiTestFuzzer() override = default;
static bool fuzzing_;
static int tests_being_run_;
static int current_;
static int active_tests_;
static bool NextThread();
int test_number_;
v8::base::Semaphore gate_;
bool active_;
void ContextSwitch();
static int GetNextTestNumber();
static v8::base::Semaphore all_tests_done_;
};
#define THREADED_TEST(Name) \
static void Test##Name(); \
RegisterThreadedTest register_##Name(Test##Name, #Name); \
/* */ TEST(Name)
class RegisterThreadedTest {
public:
explicit RegisterThreadedTest(CcTest::TestFunction* callback,
const char* name)
: fuzzer_(nullptr), callback_(callback), name_(name) {
prev_ = first_;
first_ = this;
count_++;
}
static int count() { return count_; }
static RegisterThreadedTest* nth(int i) {
CHECK(i < count());
RegisterThreadedTest* current = first_;
while (i > 0) {
i--;
current = current->prev_;
}
return current;
}
CcTest::TestFunction* callback() { return callback_; }
ApiTestFuzzer* fuzzer_;
const char* name() { return name_; }
private:
static RegisterThreadedTest* first_;
static int count_;
CcTest::TestFunction* callback_;
RegisterThreadedTest* prev_;
const char* name_;
};
// A LocalContext holds a reference to a v8::Context.
class LocalContext {
public:
LocalContext(v8::Isolate* isolate,
v8::ExtensionConfiguration* extensions = nullptr,
v8::Local<v8::ObjectTemplate> global_template =
v8::Local<v8::ObjectTemplate>(),
v8::Local<v8::Value> global_object = v8::Local<v8::Value>()) {
Initialize(isolate, extensions, global_template, global_object);
}
LocalContext(v8::ExtensionConfiguration* extensions = nullptr,
v8::Local<v8::ObjectTemplate> global_template =
v8::Local<v8::ObjectTemplate>(),
v8::Local<v8::Value> global_object = v8::Local<v8::Value>()) {
Initialize(CcTest::isolate(), extensions, global_template, global_object);
}
virtual ~LocalContext();
v8::Context* operator->() {
return *reinterpret_cast<v8::Context**>(&context_);
}
v8::Context* operator*() { return operator->(); }
bool IsReady() { return !context_.IsEmpty(); }
v8::Local<v8::Context> local() const {
return v8::Local<v8::Context>::New(isolate_, context_);
}
private:
void Initialize(v8::Isolate* isolate, v8::ExtensionConfiguration* extensions,
v8::Local<v8::ObjectTemplate> global_template,
v8::Local<v8::Value> global_object);
v8::Persistent<v8::Context> context_;
v8::Isolate* isolate_;
};
static inline uint16_t* AsciiToTwoByteString(const char* source) {
size_t array_length = strlen(source) + 1;
uint16_t* converted = i::NewArray<uint16_t>(array_length);
for (size_t i = 0; i < array_length; i++) converted[i] = source[i];
return converted;
}
template <typename T>
static inline i::Handle<T> GetGlobal(const char* name) {
i::Isolate* isolate = CcTest::i_isolate();
i::Handle<i::String> str_name =
isolate->factory()->InternalizeUtf8String(name);
i::Handle<i::Object> value =
i::Object::GetProperty(isolate, isolate->global_object(), str_name)
.ToHandleChecked();
return i::Handle<T>::cast(value);
}
static inline v8::Local<v8::Boolean> v8_bool(bool val) {
return v8::Boolean::New(v8::Isolate::GetCurrent(), val);
}
static inline v8::Local<v8::Value> v8_num(double x) {
return v8::Number::New(v8::Isolate::GetCurrent(), x);
}
static inline v8::Local<v8::Integer> v8_int(int32_t x) {
return v8::Integer::New(v8::Isolate::GetCurrent(), x);
}
static inline v8::Local<v8::BigInt> v8_bigint(int64_t x) {
return v8::BigInt::New(v8::Isolate::GetCurrent(), x);
}
static inline v8::Local<v8::String> v8_str(const char* x) {
return v8::String::NewFromUtf8(v8::Isolate::GetCurrent(), x).ToLocalChecked();
}
static inline v8::Local<v8::String> v8_str(v8::Isolate* isolate,
const char* x) {
return v8::String::NewFromUtf8(isolate, x).ToLocalChecked();
}
static inline v8::Local<v8::Symbol> v8_symbol(const char* name) {
return v8::Symbol::New(v8::Isolate::GetCurrent(), v8_str(name));
}
static inline v8::Local<v8::Script> v8_compile(v8::Local<v8::String> x) {
v8::Local<v8::Script> result;
CHECK(v8::Script::Compile(v8::Isolate::GetCurrent()->GetCurrentContext(), x)
.ToLocal(&result));
return result;
}
static inline v8::Local<v8::Script> v8_compile(const char* x) {
return v8_compile(v8_str(x));
}
static inline v8::MaybeLocal<v8::Script> v8_try_compile(
v8::Local<v8::String> x) {
return v8::Script::Compile(v8::Isolate::GetCurrent()->GetCurrentContext(), x);
}
static inline v8::MaybeLocal<v8::Script> v8_try_compile(const char* x) {
return v8_try_compile(v8_str(x));
}
static inline int32_t v8_run_int32value(v8::Local<v8::Script> script) {
v8::Local<v8::Context> context = CcTest::isolate()->GetCurrentContext();
return script->Run(context).ToLocalChecked()->Int32Value(context).FromJust();
}
static inline v8::Local<v8::Script> CompileWithOrigin(
v8::Local<v8::String> source, v8::Local<v8::String> origin_url,
bool is_shared_cross_origin) {
v8::Isolate* isolate = v8::Isolate::GetCurrent();
v8::ScriptOrigin origin(isolate, origin_url, 0, 0, is_shared_cross_origin);
v8::ScriptCompiler::Source script_source(source, origin);
return v8::ScriptCompiler::Compile(isolate->GetCurrentContext(),
&script_source)
.ToLocalChecked();
}
static inline v8::Local<v8::Script> CompileWithOrigin(
v8::Local<v8::String> source, const char* origin_url,
bool is_shared_cross_origin) {
return CompileWithOrigin(source, v8_str(origin_url), is_shared_cross_origin);
}
static inline v8::Local<v8::Script> CompileWithOrigin(
const char* source, const char* origin_url, bool is_shared_cross_origin) {
return CompileWithOrigin(v8_str(source), v8_str(origin_url),
is_shared_cross_origin);
}
// Helper functions that compile and run the source.
static inline v8::MaybeLocal<v8::Value> CompileRun(
v8::Local<v8::Context> context, const char* source) {
return v8::Script::Compile(context, v8_str(source))
.ToLocalChecked()
->Run(context);
}
static inline v8::Local<v8::Value> CompileRunChecked(v8::Isolate* isolate,
const char* source) {
v8::Local<v8::String> source_string =
v8::String::NewFromUtf8(isolate, source).ToLocalChecked();
v8::Local<v8::Context> context = isolate->GetCurrentContext();
v8::Local<v8::Script> script =
v8::Script::Compile(context, source_string).ToLocalChecked();
return script->Run(context).ToLocalChecked();
}
static inline v8::Local<v8::Value> CompileRun(v8::Local<v8::String> source) {
v8::Local<v8::Value> result;
if (v8_compile(source)
->Run(v8::Isolate::GetCurrent()->GetCurrentContext())
.ToLocal(&result)) {
return result;
}
return v8::Local<v8::Value>();
}
// Helper functions that compile and run the source.
static inline v8::Local<v8::Value> CompileRun(const char* source) {
return CompileRun(v8_str(source));
}
static inline v8::Local<v8::Value> CompileRun(
v8::Local<v8::Context> context, v8::ScriptCompiler::Source* script_source,
v8::ScriptCompiler::CompileOptions options) {
v8::Local<v8::Value> result;
if (v8::ScriptCompiler::Compile(context, script_source, options)
.ToLocalChecked()
->Run(context)
.ToLocal(&result)) {
return result;
}
return v8::Local<v8::Value>();
}
// Helper functions that compile and run the source with given origin.
static inline v8::Local<v8::Value> CompileRunWithOrigin(const char* source,
const char* origin_url,
int line_number,
int column_number) {
v8::Isolate* isolate = v8::Isolate::GetCurrent();
v8::Local<v8::Context> context = isolate->GetCurrentContext();
v8::ScriptOrigin origin(isolate, v8_str(origin_url), line_number,
column_number);
v8::ScriptCompiler::Source script_source(v8_str(source), origin);
return CompileRun(context, &script_source,
v8::ScriptCompiler::CompileOptions());
}
static inline v8::Local<v8::Value> CompileRunWithOrigin(
v8::Local<v8::String> source, const char* origin_url) {
v8::Isolate* isolate = v8::Isolate::GetCurrent();
v8::Local<v8::Context> context = isolate->GetCurrentContext();
v8::ScriptCompiler::Source script_source(
source, v8::ScriptOrigin(isolate, v8_str(origin_url)));
return CompileRun(context, &script_source,
v8::ScriptCompiler::CompileOptions());
}
static inline v8::Local<v8::Value> CompileRunWithOrigin(
const char* source, const char* origin_url) {
return CompileRunWithOrigin(v8_str(source), origin_url);
}
// Run a ScriptStreamingTask in a separate thread.
class StreamerThread : public v8::base::Thread {
public:
static void StartThreadForTaskAndJoin(
v8::ScriptCompiler::ScriptStreamingTask* task) {
StreamerThread thread(task);
CHECK(thread.Start());
thread.Join();
}
explicit StreamerThread(v8::ScriptCompiler::ScriptStreamingTask* task)
: Thread(Thread::Options()), task_(task) {}
void Run() override { task_->Run(); }
private:
v8::ScriptCompiler::ScriptStreamingTask* task_;
};
// Takes a JSFunction and runs it through the test version of the optimizing
// pipeline, allocating the temporary compilation artifacts in a given Zone.
// For possible {flags} values, look at OptimizedCompilationInfo::Flag. If
// {out_broker} is not nullptr, returns the JSHeapBroker via that (transferring
// ownership to the caller).
i::Handle<i::JSFunction> Optimize(
i::Handle<i::JSFunction> function, i::Zone* zone, i::Isolate* isolate,
uint32_t flags,
std::unique_ptr<i::compiler::JSHeapBroker>* out_broker = nullptr);
static inline void ExpectString(const char* code, const char* expected) {
v8::Local<v8::Value> result = CompileRun(code);
CHECK(result->IsString());
v8::String::Utf8Value utf8(v8::Isolate::GetCurrent(), result);
CHECK_EQ(0, strcmp(expected, *utf8));
}
static inline void ExpectInt32(const char* code, int expected) {
v8::Local<v8::Value> result = CompileRun(code);
CHECK(result->IsInt32());
CHECK_EQ(expected,
result->Int32Value(v8::Isolate::GetCurrent()->GetCurrentContext())
.FromJust());
}
static inline void ExpectBoolean(const char* code, bool expected) {
v8::Local<v8::Value> result = CompileRun(code);
CHECK(result->IsBoolean());
CHECK_EQ(expected, result->BooleanValue(v8::Isolate::GetCurrent()));
}
static inline void ExpectTrue(const char* code) {
ExpectBoolean(code, true);
}
static inline void ExpectFalse(const char* code) {
ExpectBoolean(code, false);
}
static inline void ExpectObject(const char* code,
v8::Local<v8::Value> expected) {
v8::Local<v8::Value> result = CompileRun(code);
CHECK(result->SameValue(expected));
}
static inline void ExpectUndefined(const char* code) {
v8::Local<v8::Value> result = CompileRun(code);
CHECK(result->IsUndefined());
}
static inline void ExpectNull(const char* code) {
v8::Local<v8::Value> result = CompileRun(code);
CHECK(result->IsNull());
}
static inline void CheckDoubleEquals(double expected, double actual) {
const double kEpsilon = 1e-10;
CHECK_LE(expected, actual + kEpsilon);
CHECK_GE(expected, actual - kEpsilon);
}
static v8::debug::DebugDelegate dummy_delegate;
static inline void EnableDebugger(v8::Isolate* isolate) {
v8::debug::SetDebugDelegate(isolate, &dummy_delegate);
}
static inline void DisableDebugger(v8::Isolate* isolate) {
v8::debug::SetDebugDelegate(isolate, nullptr);
}
static inline void EmptyMessageQueues(v8::Isolate* isolate) {
while (v8::platform::PumpMessageLoop(CcTest::default_platform(), isolate)) {
}
}
class InitializedHandleScopeImpl;
class V8_NODISCARD InitializedHandleScope {
public:
explicit InitializedHandleScope(i::Isolate* isolate = nullptr);
~InitializedHandleScope();
// Prefixing the below with main_ reduces a lot of naming clashes.
i::Isolate* main_isolate() { return main_isolate_; }
private:
i::Isolate* main_isolate_;
std::unique_ptr<InitializedHandleScopeImpl> initialized_handle_scope_impl_;
};
class V8_NODISCARD HandleAndZoneScope : public InitializedHandleScope {
public:
explicit HandleAndZoneScope(bool support_zone_compression = false);
~HandleAndZoneScope();
// Prefixing the below with main_ reduces a lot of naming clashes.
i::Zone* main_zone() { return main_zone_.get(); }
private:
v8::internal::AccountingAllocator allocator_;
std::unique_ptr<i::Zone> main_zone_;
};
class StaticOneByteResource : public v8::String::ExternalOneByteStringResource {
public:
explicit StaticOneByteResource(const char* data) : data_(data) {}
~StaticOneByteResource() override = default;
const char* data() const override { return data_; }
size_t length() const override { return strlen(data_); }
private:
const char* data_;
};
// ManualGCScope allows for disabling GC heuristics. This is useful for tests
// that want to check specific corner cases around GC.
//
// The scope will finalize any ongoing GC on the provided Isolate. If no Isolate
// is manually provided, it is assumed that a CcTest setup (e.g.
// CcTest::InitializeVM()) is used.
class V8_NODISCARD ManualGCScope {
public:
explicit ManualGCScope(
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(CcTest::isolate_));
~ManualGCScope();
private:
const bool flag_concurrent_marking_;
const bool flag_concurrent_sweeping_;
const bool flag_stress_concurrent_allocation_;
const bool flag_stress_incremental_marking_;
const bool flag_parallel_marking_;
const bool flag_detect_ineffective_gcs_near_heap_limit_;
};
// This is a base class that can be overridden to implement a test platform. It
// delegates all operations to the default platform.
class TestPlatform : public v8::Platform {
public:
~TestPlatform() override = default;
// v8::Platform implementation.
v8::PageAllocator* GetPageAllocator() override;
void OnCriticalMemoryPressure() override;
bool OnCriticalMemoryPressure(size_t length) override;
int NumberOfWorkerThreads() override;
std::shared_ptr<v8::TaskRunner> GetForegroundTaskRunner(
v8::Isolate* isolate) override;
void CallOnWorkerThread(std::unique_ptr<v8::Task> task) override;
void CallDelayedOnWorkerThread(std::unique_ptr<v8::Task> task,
double delay_in_seconds) override;
std::unique_ptr<v8::JobHandle> PostJob(
v8::TaskPriority priority,
std::unique_ptr<v8::JobTask> job_task) override;
std::unique_ptr<v8::JobHandle> CreateJob(
v8::TaskPriority priority,
std::unique_ptr<v8::JobTask> job_task) override;
double MonotonicallyIncreasingTime() override;
double CurrentClockTimeMillis() override;
bool IdleTasksEnabled(v8::Isolate* isolate) override;
v8::TracingController* GetTracingController() override;
protected:
TestPlatform() = default;
};
#if defined(USE_SIMULATOR)
class SimulatorHelper {
public:
inline bool Init(v8::Isolate* isolate) {
simulator_ = reinterpret_cast<v8::internal::Isolate*>(isolate)
->thread_local_top()
->simulator_;
// Check if there is active simulator.
return simulator_ != nullptr;
}
inline void FillRegisters(v8::RegisterState* state) {
#if V8_TARGET_ARCH_ARM
state->pc = reinterpret_cast<void*>(simulator_->get_pc());
state->sp = reinterpret_cast<void*>(
simulator_->get_register(v8::internal::Simulator::sp));
state->fp = reinterpret_cast<void*>(
simulator_->get_register(v8::internal::Simulator::r11));
state->lr = reinterpret_cast<void*>(
simulator_->get_register(v8::internal::Simulator::lr));
#elif V8_TARGET_ARCH_ARM64
if (simulator_->sp() == 0 || simulator_->fp() == 0) {
// It's possible that the simulator is interrupted while it is updating
// the sp or fp register. ARM64 simulator does this in two steps:
// first setting it to zero and then setting it to a new value.
// Bailout if sp/fp doesn't contain the new value.
return;
}
state->pc = reinterpret_cast<void*>(simulator_->pc());
state->sp = reinterpret_cast<void*>(simulator_->sp());
state->fp = reinterpret_cast<void*>(simulator_->fp());
state->lr = reinterpret_cast<void*>(simulator_->lr());
#elif V8_TARGET_ARCH_MIPS || V8_TARGET_ARCH_MIPS64
state->pc = reinterpret_cast<void*>(simulator_->get_pc());
state->sp = reinterpret_cast<void*>(
simulator_->get_register(v8::internal::Simulator::sp));
state->fp = reinterpret_cast<void*>(
simulator_->get_register(v8::internal::Simulator::fp));
#elif V8_TARGET_ARCH_PPC || V8_TARGET_ARCH_PPC64
state->pc = reinterpret_cast<void*>(simulator_->get_pc());
state->sp = reinterpret_cast<void*>(
simulator_->get_register(v8::internal::Simulator::sp));
state->fp = reinterpret_cast<void*>(
simulator_->get_register(v8::internal::Simulator::fp));
state->lr = reinterpret_cast<void*>(simulator_->get_lr());
#elif V8_TARGET_ARCH_S390 || V8_TARGET_ARCH_S390X
state->pc = reinterpret_cast<void*>(simulator_->get_pc());
state->sp = reinterpret_cast<void*>(
simulator_->get_register(v8::internal::Simulator::sp));
state->fp = reinterpret_cast<void*>(
simulator_->get_register(v8::internal::Simulator::fp));
state->lr = reinterpret_cast<void*>(
simulator_->get_register(v8::internal::Simulator::ra));
#endif
}
private:
v8::internal::Simulator* simulator_;
};
#endif // USE_SIMULATOR
// The following should correspond to Chromium's kV8DOMWrapperTypeIndex and
// kV8DOMWrapperObjectIndex.
static const int kV8WrapperTypeIndex = 0;
static const int kV8WrapperObjectIndex = 1;
enum class ApiCheckerResult : uint8_t {
kNotCalled = 0,
kSlowCalled = 1 << 0,
kFastCalled = 1 << 1,
};
using ApiCheckerResultFlags = v8::base::Flags<ApiCheckerResult>;
DEFINE_OPERATORS_FOR_FLAGS(ApiCheckerResultFlags)
bool IsValidUnwrapObject(v8::Object* object);
template <typename T>
T* GetInternalField(v8::Object* wrapper) {
assert(kV8WrapperObjectIndex < wrapper->InternalFieldCount());
return reinterpret_cast<T*>(
wrapper->GetAlignedPointerFromInternalField(kV8WrapperObjectIndex));
}
#endif // ifndef CCTEST_H_
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