// Copyright 2011 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. // // Tests for heap profiler #include #include "src/v8.h" #include "include/v8-profiler.h" #include "src/allocation-tracker.h" #include "src/debug.h" #include "src/hashmap.h" #include "src/heap-profiler.h" #include "src/snapshot.h" #include "src/utils-inl.h" #include "test/cctest/cctest.h" using i::AllocationTraceNode; using i::AllocationTraceTree; using i::AllocationTracker; using i::HashMap; using i::Vector; namespace { class NamedEntriesDetector { public: NamedEntriesDetector() : has_A2(false), has_B2(false), has_C2(false) { } void CheckEntry(i::HeapEntry* entry) { if (strcmp(entry->name(), "A2") == 0) has_A2 = true; if (strcmp(entry->name(), "B2") == 0) has_B2 = true; if (strcmp(entry->name(), "C2") == 0) has_C2 = true; } static bool AddressesMatch(void* key1, void* key2) { return key1 == key2; } void CheckAllReachables(i::HeapEntry* root) { i::HashMap visited(AddressesMatch); i::List list(10); list.Add(root); CheckEntry(root); while (!list.is_empty()) { i::HeapEntry* entry = list.RemoveLast(); i::Vector children = entry->children(); for (int i = 0; i < children.length(); ++i) { if (children[i]->type() == i::HeapGraphEdge::kShortcut) continue; i::HeapEntry* child = children[i]->to(); i::HashMap::Entry* entry = visited.Lookup( reinterpret_cast(child), static_cast(reinterpret_cast(child)), true); if (entry->value) continue; entry->value = reinterpret_cast(1); list.Add(child); CheckEntry(child); } } } bool has_A2; bool has_B2; bool has_C2; }; } // namespace static const v8::HeapGraphNode* GetGlobalObject( const v8::HeapSnapshot* snapshot) { CHECK_EQ(2, snapshot->GetRoot()->GetChildrenCount()); // The 0th-child is (GC Roots), 1st is the user root. const v8::HeapGraphNode* global_obj = snapshot->GetRoot()->GetChild(1)->GetToNode(); CHECK_EQ(0, strncmp("Object", const_cast( reinterpret_cast(global_obj))->name(), 6)); return global_obj; } static const v8::HeapGraphNode* GetProperty(const v8::HeapGraphNode* node, v8::HeapGraphEdge::Type type, const char* name) { for (int i = 0, count = node->GetChildrenCount(); i < count; ++i) { const v8::HeapGraphEdge* prop = node->GetChild(i); v8::String::Utf8Value prop_name(prop->GetName()); if (prop->GetType() == type && strcmp(name, *prop_name) == 0) return prop->GetToNode(); } return NULL; } static bool HasString(const v8::HeapGraphNode* node, const char* contents) { for (int i = 0, count = node->GetChildrenCount(); i < count; ++i) { const v8::HeapGraphEdge* prop = node->GetChild(i); const v8::HeapGraphNode* node = prop->GetToNode(); if (node->GetType() == v8::HeapGraphNode::kString) { v8::String::Utf8Value node_name(node->GetName()); if (strcmp(contents, *node_name) == 0) return true; } } return false; } static bool AddressesMatch(void* key1, void* key2) { return key1 == key2; } // Check that snapshot has no unretained entries except root. static bool ValidateSnapshot(const v8::HeapSnapshot* snapshot, int depth = 3) { i::HeapSnapshot* heap_snapshot = const_cast( reinterpret_cast(snapshot)); i::HashMap visited(AddressesMatch); i::List& edges = heap_snapshot->edges(); for (int i = 0; i < edges.length(); ++i) { i::HashMap::Entry* entry = visited.Lookup( reinterpret_cast(edges[i].to()), static_cast(reinterpret_cast(edges[i].to())), true); uint32_t ref_count = static_cast( reinterpret_cast(entry->value)); entry->value = reinterpret_cast(ref_count + 1); } uint32_t unretained_entries_count = 0; i::List& entries = heap_snapshot->entries(); for (int i = 0; i < entries.length(); ++i) { i::HashMap::Entry* entry = visited.Lookup( reinterpret_cast(&entries[i]), static_cast(reinterpret_cast(&entries[i])), false); if (!entry && entries[i].id() != 1) { entries[i].Print("entry with no retainer", "", depth, 0); ++unretained_entries_count; } } return unretained_entries_count == 0; } TEST(HeapSnapshot) { LocalContext env2; v8::HandleScope scope(env2->GetIsolate()); v8::HeapProfiler* heap_profiler = env2->GetIsolate()->GetHeapProfiler(); CompileRun( "function A2() {}\n" "function B2(x) { return function() { return typeof x; }; }\n" "function C2(x) { this.x1 = x; this.x2 = x; this[1] = x; }\n" "var a2 = new A2();\n" "var b2_1 = new B2(a2), b2_2 = new B2(a2);\n" "var c2 = new C2(a2);"); const v8::HeapSnapshot* snapshot_env2 = heap_profiler->TakeHeapSnapshot(v8_str("env2")); CHECK(ValidateSnapshot(snapshot_env2)); const v8::HeapGraphNode* global_env2 = GetGlobalObject(snapshot_env2); // Verify, that JS global object of env2 has '..2' properties. const v8::HeapGraphNode* a2_node = GetProperty(global_env2, v8::HeapGraphEdge::kProperty, "a2"); CHECK_NE(NULL, a2_node); CHECK_NE( NULL, GetProperty(global_env2, v8::HeapGraphEdge::kProperty, "b2_1")); CHECK_NE( NULL, GetProperty(global_env2, v8::HeapGraphEdge::kProperty, "b2_2")); CHECK_NE(NULL, GetProperty(global_env2, v8::HeapGraphEdge::kProperty, "c2")); NamedEntriesDetector det; det.CheckAllReachables(const_cast( reinterpret_cast(global_env2))); CHECK(det.has_A2); CHECK(det.has_B2); CHECK(det.has_C2); } TEST(HeapSnapshotObjectSizes) { LocalContext env; v8::HandleScope scope(env->GetIsolate()); v8::HeapProfiler* heap_profiler = env->GetIsolate()->GetHeapProfiler(); // -a-> X1 --a // x -b-> X2 <-| CompileRun( "function X(a, b) { this.a = a; this.b = b; }\n" "x = new X(new X(), new X());\n" "dummy = new X();\n" "(function() { x.a.a = x.b; })();"); const v8::HeapSnapshot* snapshot = heap_profiler->TakeHeapSnapshot(v8_str("sizes")); CHECK(ValidateSnapshot(snapshot)); const v8::HeapGraphNode* global = GetGlobalObject(snapshot); const v8::HeapGraphNode* x = GetProperty(global, v8::HeapGraphEdge::kProperty, "x"); CHECK_NE(NULL, x); const v8::HeapGraphNode* x1 = GetProperty(x, v8::HeapGraphEdge::kProperty, "a"); CHECK_NE(NULL, x1); const v8::HeapGraphNode* x2 = GetProperty(x, v8::HeapGraphEdge::kProperty, "b"); CHECK_NE(NULL, x2); // Test sizes. CHECK_NE(0, static_cast(x->GetShallowSize())); CHECK_NE(0, static_cast(x1->GetShallowSize())); CHECK_NE(0, static_cast(x2->GetShallowSize())); } TEST(BoundFunctionInSnapshot) { LocalContext env; v8::HandleScope scope(env->GetIsolate()); v8::HeapProfiler* heap_profiler = env->GetIsolate()->GetHeapProfiler(); CompileRun( "function myFunction(a, b) { this.a = a; this.b = b; }\n" "function AAAAA() {}\n" "boundFunction = myFunction.bind(new AAAAA(), 20, new Number(12)); \n"); const v8::HeapSnapshot* snapshot = heap_profiler->TakeHeapSnapshot(v8_str("sizes")); CHECK(ValidateSnapshot(snapshot)); const v8::HeapGraphNode* global = GetGlobalObject(snapshot); const v8::HeapGraphNode* f = GetProperty(global, v8::HeapGraphEdge::kProperty, "boundFunction"); CHECK(f); CHECK_EQ(v8::String::NewFromUtf8(env->GetIsolate(), "native_bind"), f->GetName()); const v8::HeapGraphNode* bindings = GetProperty(f, v8::HeapGraphEdge::kInternal, "bindings"); CHECK_NE(NULL, bindings); CHECK_EQ(v8::HeapGraphNode::kArray, bindings->GetType()); CHECK_EQ(4, bindings->GetChildrenCount()); const v8::HeapGraphNode* bound_this = GetProperty( f, v8::HeapGraphEdge::kShortcut, "bound_this"); CHECK(bound_this); CHECK_EQ(v8::HeapGraphNode::kObject, bound_this->GetType()); const v8::HeapGraphNode* bound_function = GetProperty( f, v8::HeapGraphEdge::kShortcut, "bound_function"); CHECK(bound_function); CHECK_EQ(v8::HeapGraphNode::kClosure, bound_function->GetType()); const v8::HeapGraphNode* bound_argument = GetProperty( f, v8::HeapGraphEdge::kShortcut, "bound_argument_1"); CHECK(bound_argument); CHECK_EQ(v8::HeapGraphNode::kObject, bound_argument->GetType()); } TEST(HeapSnapshotEntryChildren) { LocalContext env; v8::HandleScope scope(env->GetIsolate()); v8::HeapProfiler* heap_profiler = env->GetIsolate()->GetHeapProfiler(); CompileRun( "function A() { }\n" "a = new A;"); const v8::HeapSnapshot* snapshot = heap_profiler->TakeHeapSnapshot(v8_str("children")); CHECK(ValidateSnapshot(snapshot)); const v8::HeapGraphNode* global = GetGlobalObject(snapshot); for (int i = 0, count = global->GetChildrenCount(); i < count; ++i) { const v8::HeapGraphEdge* prop = global->GetChild(i); CHECK_EQ(global, prop->GetFromNode()); } const v8::HeapGraphNode* a = GetProperty(global, v8::HeapGraphEdge::kProperty, "a"); CHECK_NE(NULL, a); for (int i = 0, count = a->GetChildrenCount(); i < count; ++i) { const v8::HeapGraphEdge* prop = a->GetChild(i); CHECK_EQ(a, prop->GetFromNode()); } } TEST(HeapSnapshotCodeObjects) { LocalContext env; v8::HandleScope scope(env->GetIsolate()); v8::HeapProfiler* heap_profiler = env->GetIsolate()->GetHeapProfiler(); CompileRun( "function lazy(x) { return x - 1; }\n" "function compiled(x) { return x + 1; }\n" "var anonymous = (function() { return function() { return 0; } })();\n" "compiled(1)"); const v8::HeapSnapshot* snapshot = heap_profiler->TakeHeapSnapshot(v8_str("code")); CHECK(ValidateSnapshot(snapshot)); const v8::HeapGraphNode* global = GetGlobalObject(snapshot); const v8::HeapGraphNode* compiled = GetProperty(global, v8::HeapGraphEdge::kProperty, "compiled"); CHECK_NE(NULL, compiled); CHECK_EQ(v8::HeapGraphNode::kClosure, compiled->GetType()); const v8::HeapGraphNode* lazy = GetProperty(global, v8::HeapGraphEdge::kProperty, "lazy"); CHECK_NE(NULL, lazy); CHECK_EQ(v8::HeapGraphNode::kClosure, lazy->GetType()); const v8::HeapGraphNode* anonymous = GetProperty(global, v8::HeapGraphEdge::kProperty, "anonymous"); CHECK_NE(NULL, anonymous); CHECK_EQ(v8::HeapGraphNode::kClosure, anonymous->GetType()); v8::String::Utf8Value anonymous_name(anonymous->GetName()); CHECK_EQ("", *anonymous_name); // Find references to code. const v8::HeapGraphNode* compiled_code = GetProperty(compiled, v8::HeapGraphEdge::kInternal, "shared"); CHECK_NE(NULL, compiled_code); const v8::HeapGraphNode* lazy_code = GetProperty(lazy, v8::HeapGraphEdge::kInternal, "shared"); CHECK_NE(NULL, lazy_code); // Check that there's no strong next_code_link. There might be a weak one // but might be not, so we can't check that fact. const v8::HeapGraphNode* code = GetProperty(compiled_code, v8::HeapGraphEdge::kInternal, "code"); CHECK_NE(NULL, code); const v8::HeapGraphNode* next_code_link = GetProperty(code, v8::HeapGraphEdge::kInternal, "code"); CHECK_EQ(NULL, next_code_link); // Verify that non-compiled code doesn't contain references to "x" // literal, while compiled code does. The scope info is stored in FixedArray // objects attached to the SharedFunctionInfo. bool compiled_references_x = false, lazy_references_x = false; for (int i = 0, count = compiled_code->GetChildrenCount(); i < count; ++i) { const v8::HeapGraphEdge* prop = compiled_code->GetChild(i); const v8::HeapGraphNode* node = prop->GetToNode(); if (node->GetType() == v8::HeapGraphNode::kArray) { if (HasString(node, "x")) { compiled_references_x = true; break; } } } for (int i = 0, count = lazy_code->GetChildrenCount(); i < count; ++i) { const v8::HeapGraphEdge* prop = lazy_code->GetChild(i); const v8::HeapGraphNode* node = prop->GetToNode(); if (node->GetType() == v8::HeapGraphNode::kArray) { if (HasString(node, "x")) { lazy_references_x = true; break; } } } CHECK(compiled_references_x); CHECK(!lazy_references_x); } TEST(HeapSnapshotHeapNumbers) { LocalContext env; v8::HandleScope scope(env->GetIsolate()); v8::HeapProfiler* heap_profiler = env->GetIsolate()->GetHeapProfiler(); CompileRun( "a = 1; // a is Smi\n" "b = 2.5; // b is HeapNumber"); const v8::HeapSnapshot* snapshot = heap_profiler->TakeHeapSnapshot(v8_str("numbers")); CHECK(ValidateSnapshot(snapshot)); const v8::HeapGraphNode* global = GetGlobalObject(snapshot); CHECK_EQ(NULL, GetProperty(global, v8::HeapGraphEdge::kProperty, "a")); const v8::HeapGraphNode* b = GetProperty(global, v8::HeapGraphEdge::kProperty, "b"); CHECK_NE(NULL, b); CHECK_EQ(v8::HeapGraphNode::kHeapNumber, b->GetType()); } TEST(HeapSnapshotSlicedString) { LocalContext env; v8::HandleScope scope(env->GetIsolate()); v8::HeapProfiler* heap_profiler = env->GetIsolate()->GetHeapProfiler(); CompileRun( "parent_string = \"123456789.123456789.123456789.123456789.123456789." "123456789.123456789.123456789.123456789.123456789." "123456789.123456789.123456789.123456789.123456789." "123456789.123456789.123456789.123456789.123456789.\";" "child_string = parent_string.slice(100);"); const v8::HeapSnapshot* snapshot = heap_profiler->TakeHeapSnapshot(v8_str("strings")); CHECK(ValidateSnapshot(snapshot)); const v8::HeapGraphNode* global = GetGlobalObject(snapshot); const v8::HeapGraphNode* parent_string = GetProperty(global, v8::HeapGraphEdge::kProperty, "parent_string"); CHECK_NE(NULL, parent_string); const v8::HeapGraphNode* child_string = GetProperty(global, v8::HeapGraphEdge::kProperty, "child_string"); CHECK_NE(NULL, child_string); CHECK_EQ(v8::HeapGraphNode::kSlicedString, child_string->GetType()); const v8::HeapGraphNode* parent = GetProperty(child_string, v8::HeapGraphEdge::kInternal, "parent"); CHECK_EQ(parent_string, parent); heap_profiler->DeleteAllHeapSnapshots(); } TEST(HeapSnapshotConsString) { v8::Isolate* isolate = CcTest::isolate(); v8::HandleScope scope(isolate); v8::Local global_template = v8::ObjectTemplate::New(isolate); global_template->SetInternalFieldCount(1); LocalContext env(NULL, global_template); v8::Handle global_proxy = env->Global(); v8::Handle global = global_proxy->GetPrototype().As(); CHECK_EQ(1, global->InternalFieldCount()); i::Factory* factory = CcTest::i_isolate()->factory(); i::Handle first = factory->NewStringFromStaticAscii("0123456789"); i::Handle second = factory->NewStringFromStaticAscii("0123456789"); i::Handle cons_string = factory->NewConsString(first, second).ToHandleChecked(); global->SetInternalField(0, v8::ToApiHandle(cons_string)); v8::HeapProfiler* heap_profiler = isolate->GetHeapProfiler(); const v8::HeapSnapshot* snapshot = heap_profiler->TakeHeapSnapshot(v8_str("cons_strings")); CHECK(ValidateSnapshot(snapshot)); const v8::HeapGraphNode* global_node = GetGlobalObject(snapshot); const v8::HeapGraphNode* string_node = GetProperty(global_node, v8::HeapGraphEdge::kInternal, "0"); CHECK_NE(NULL, string_node); CHECK_EQ(v8::HeapGraphNode::kConsString, string_node->GetType()); const v8::HeapGraphNode* first_node = GetProperty(string_node, v8::HeapGraphEdge::kInternal, "first"); CHECK_EQ(v8::HeapGraphNode::kString, first_node->GetType()); const v8::HeapGraphNode* second_node = GetProperty(string_node, v8::HeapGraphEdge::kInternal, "second"); CHECK_EQ(v8::HeapGraphNode::kString, second_node->GetType()); heap_profiler->DeleteAllHeapSnapshots(); } TEST(HeapSnapshotSymbol) { LocalContext env; v8::HandleScope scope(env->GetIsolate()); v8::HeapProfiler* heap_profiler = env->GetIsolate()->GetHeapProfiler(); CompileRun("a = Symbol('mySymbol');\n"); const v8::HeapSnapshot* snapshot = heap_profiler->TakeHeapSnapshot(v8_str("Symbol")); CHECK(ValidateSnapshot(snapshot)); const v8::HeapGraphNode* global = GetGlobalObject(snapshot); const v8::HeapGraphNode* a = GetProperty(global, v8::HeapGraphEdge::kProperty, "a"); CHECK_NE(NULL, a); CHECK_EQ(a->GetType(), v8::HeapGraphNode::kSymbol); CHECK_EQ(v8_str("symbol"), a->GetName()); const v8::HeapGraphNode* name = GetProperty(a, v8::HeapGraphEdge::kInternal, "name"); CHECK_NE(NULL, name); CHECK_EQ(v8_str("mySymbol"), name->GetName()); } TEST(HeapSnapshotWeakCollection) { LocalContext env; v8::HandleScope scope(env->GetIsolate()); v8::HeapProfiler* heap_profiler = env->GetIsolate()->GetHeapProfiler(); CompileRun( "k = {}; v = {}; s = 'str';\n" "ws = new WeakSet(); ws.add(k); ws.add(v); ws[s] = s;\n" "wm = new WeakMap(); wm.set(k, v); wm[s] = s;\n"); const v8::HeapSnapshot* snapshot = heap_profiler->TakeHeapSnapshot(v8_str("WeakCollections")); CHECK(ValidateSnapshot(snapshot)); const v8::HeapGraphNode* global = GetGlobalObject(snapshot); const v8::HeapGraphNode* k = GetProperty(global, v8::HeapGraphEdge::kProperty, "k"); CHECK_NE(NULL, k); const v8::HeapGraphNode* v = GetProperty(global, v8::HeapGraphEdge::kProperty, "v"); CHECK_NE(NULL, v); const v8::HeapGraphNode* s = GetProperty(global, v8::HeapGraphEdge::kProperty, "s"); CHECK_NE(NULL, s); const v8::HeapGraphNode* ws = GetProperty(global, v8::HeapGraphEdge::kProperty, "ws"); CHECK_NE(NULL, ws); CHECK_EQ(v8::HeapGraphNode::kObject, ws->GetType()); CHECK_EQ(v8_str("WeakSet"), ws->GetName()); const v8::HeapGraphNode* ws_table = GetProperty(ws, v8::HeapGraphEdge::kInternal, "table"); CHECK_EQ(v8::HeapGraphNode::kArray, ws_table->GetType()); CHECK_GT(ws_table->GetChildrenCount(), 0); int weak_entries = 0; for (int i = 0, count = ws_table->GetChildrenCount(); i < count; ++i) { const v8::HeapGraphEdge* prop = ws_table->GetChild(i); if (prop->GetType() != v8::HeapGraphEdge::kWeak) continue; if (k->GetId() == prop->GetToNode()->GetId()) { ++weak_entries; } } CHECK_EQ(1, weak_entries); const v8::HeapGraphNode* ws_s = GetProperty(ws, v8::HeapGraphEdge::kProperty, "str"); CHECK_NE(NULL, ws_s); CHECK_EQ(static_cast(s->GetId()), static_cast(ws_s->GetId())); const v8::HeapGraphNode* wm = GetProperty(global, v8::HeapGraphEdge::kProperty, "wm"); CHECK_NE(NULL, wm); CHECK_EQ(v8::HeapGraphNode::kObject, wm->GetType()); CHECK_EQ(v8_str("WeakMap"), wm->GetName()); const v8::HeapGraphNode* wm_table = GetProperty(wm, v8::HeapGraphEdge::kInternal, "table"); CHECK_EQ(v8::HeapGraphNode::kArray, wm_table->GetType()); CHECK_GT(wm_table->GetChildrenCount(), 0); weak_entries = 0; for (int i = 0, count = wm_table->GetChildrenCount(); i < count; ++i) { const v8::HeapGraphEdge* prop = wm_table->GetChild(i); if (prop->GetType() != v8::HeapGraphEdge::kWeak) continue; const v8::SnapshotObjectId to_node_id = prop->GetToNode()->GetId(); if (to_node_id == k->GetId() || to_node_id == v->GetId()) { ++weak_entries; } } CHECK_EQ(2, weak_entries); const v8::HeapGraphNode* wm_s = GetProperty(wm, v8::HeapGraphEdge::kProperty, "str"); CHECK_NE(NULL, wm_s); CHECK_EQ(static_cast(s->GetId()), static_cast(wm_s->GetId())); } TEST(HeapSnapshotCollection) { LocalContext env; v8::HandleScope scope(env->GetIsolate()); v8::HeapProfiler* heap_profiler = env->GetIsolate()->GetHeapProfiler(); CompileRun( "k = {}; v = {}; s = 'str';\n" "set = new Set(); set.add(k); set.add(v); set[s] = s;\n" "map = new Map(); map.set(k, v); map[s] = s;\n"); const v8::HeapSnapshot* snapshot = heap_profiler->TakeHeapSnapshot(v8_str("Collections")); CHECK(ValidateSnapshot(snapshot)); const v8::HeapGraphNode* global = GetGlobalObject(snapshot); const v8::HeapGraphNode* k = GetProperty(global, v8::HeapGraphEdge::kProperty, "k"); CHECK_NE(NULL, k); const v8::HeapGraphNode* v = GetProperty(global, v8::HeapGraphEdge::kProperty, "v"); CHECK_NE(NULL, v); const v8::HeapGraphNode* s = GetProperty(global, v8::HeapGraphEdge::kProperty, "s"); CHECK_NE(NULL, s); const v8::HeapGraphNode* set = GetProperty(global, v8::HeapGraphEdge::kProperty, "set"); CHECK_NE(NULL, set); CHECK_EQ(v8::HeapGraphNode::kObject, set->GetType()); CHECK_EQ(v8_str("Set"), set->GetName()); const v8::HeapGraphNode* set_table = GetProperty(set, v8::HeapGraphEdge::kInternal, "table"); CHECK_EQ(v8::HeapGraphNode::kArray, set_table->GetType()); CHECK_GT(set_table->GetChildrenCount(), 0); int entries = 0; for (int i = 0, count = set_table->GetChildrenCount(); i < count; ++i) { const v8::HeapGraphEdge* prop = set_table->GetChild(i); const v8::SnapshotObjectId to_node_id = prop->GetToNode()->GetId(); if (to_node_id == k->GetId() || to_node_id == v->GetId()) { ++entries; } } CHECK_EQ(2, entries); const v8::HeapGraphNode* set_s = GetProperty(set, v8::HeapGraphEdge::kProperty, "str"); CHECK_NE(NULL, set_s); CHECK_EQ(static_cast(s->GetId()), static_cast(set_s->GetId())); const v8::HeapGraphNode* map = GetProperty(global, v8::HeapGraphEdge::kProperty, "map"); CHECK_NE(NULL, map); CHECK_EQ(v8::HeapGraphNode::kObject, map->GetType()); CHECK_EQ(v8_str("Map"), map->GetName()); const v8::HeapGraphNode* map_table = GetProperty(map, v8::HeapGraphEdge::kInternal, "table"); CHECK_EQ(v8::HeapGraphNode::kArray, map_table->GetType()); CHECK_GT(map_table->GetChildrenCount(), 0); entries = 0; for (int i = 0, count = map_table->GetChildrenCount(); i < count; ++i) { const v8::HeapGraphEdge* prop = map_table->GetChild(i); const v8::SnapshotObjectId to_node_id = prop->GetToNode()->GetId(); if (to_node_id == k->GetId() || to_node_id == v->GetId()) { ++entries; } } CHECK_EQ(2, entries); const v8::HeapGraphNode* map_s = GetProperty(map, v8::HeapGraphEdge::kProperty, "str"); CHECK_NE(NULL, map_s); CHECK_EQ(static_cast(s->GetId()), static_cast(map_s->GetId())); } TEST(HeapSnapshotInternalReferences) { v8::Isolate* isolate = CcTest::isolate(); v8::HandleScope scope(isolate); v8::Local global_template = v8::ObjectTemplate::New(isolate); global_template->SetInternalFieldCount(2); LocalContext env(NULL, global_template); v8::Handle global_proxy = env->Global(); v8::Handle global = global_proxy->GetPrototype().As(); CHECK_EQ(2, global->InternalFieldCount()); v8::Local obj = v8::Object::New(isolate); global->SetInternalField(0, v8_num(17)); global->SetInternalField(1, obj); v8::HeapProfiler* heap_profiler = isolate->GetHeapProfiler(); const v8::HeapSnapshot* snapshot = heap_profiler->TakeHeapSnapshot(v8_str("internals")); CHECK(ValidateSnapshot(snapshot)); const v8::HeapGraphNode* global_node = GetGlobalObject(snapshot); // The first reference will not present, because it's a Smi. CHECK_EQ(NULL, GetProperty(global_node, v8::HeapGraphEdge::kInternal, "0")); // The second reference is to an object. CHECK_NE(NULL, GetProperty(global_node, v8::HeapGraphEdge::kInternal, "1")); } // Trying to introduce a check helper for uint32_t causes many // overloading ambiguities, so it seems easier just to cast // them to a signed type. #define CHECK_EQ_SNAPSHOT_OBJECT_ID(a, b) \ CHECK_EQ(static_cast(a), static_cast(b)) #define CHECK_NE_SNAPSHOT_OBJECT_ID(a, b) \ CHECK((a) != (b)) // NOLINT TEST(HeapSnapshotAddressReuse) { LocalContext env; v8::HandleScope scope(env->GetIsolate()); v8::HeapProfiler* heap_profiler = env->GetIsolate()->GetHeapProfiler(); CompileRun( "function A() {}\n" "var a = [];\n" "for (var i = 0; i < 10000; ++i)\n" " a[i] = new A();\n"); const v8::HeapSnapshot* snapshot1 = heap_profiler->TakeHeapSnapshot(v8_str("snapshot1")); CHECK(ValidateSnapshot(snapshot1)); v8::SnapshotObjectId maxId1 = snapshot1->GetMaxSnapshotJSObjectId(); CompileRun( "for (var i = 0; i < 10000; ++i)\n" " a[i] = new A();\n"); CcTest::heap()->CollectAllGarbage(i::Heap::kNoGCFlags); const v8::HeapSnapshot* snapshot2 = heap_profiler->TakeHeapSnapshot(v8_str("snapshot2")); CHECK(ValidateSnapshot(snapshot2)); const v8::HeapGraphNode* global2 = GetGlobalObject(snapshot2); const v8::HeapGraphNode* array_node = GetProperty(global2, v8::HeapGraphEdge::kProperty, "a"); CHECK_NE(NULL, array_node); int wrong_count = 0; for (int i = 0, count = array_node->GetChildrenCount(); i < count; ++i) { const v8::HeapGraphEdge* prop = array_node->GetChild(i); if (prop->GetType() != v8::HeapGraphEdge::kElement) continue; v8::SnapshotObjectId id = prop->GetToNode()->GetId(); if (id < maxId1) ++wrong_count; } CHECK_EQ(0, wrong_count); } TEST(HeapEntryIdsAndArrayShift) { LocalContext env; v8::HandleScope scope(env->GetIsolate()); v8::HeapProfiler* heap_profiler = env->GetIsolate()->GetHeapProfiler(); CompileRun( "function AnObject() {\n" " this.first = 'first';\n" " this.second = 'second';\n" "}\n" "var a = new Array();\n" "for (var i = 0; i < 10; ++i)\n" " a.push(new AnObject());\n"); const v8::HeapSnapshot* snapshot1 = heap_profiler->TakeHeapSnapshot(v8_str("s1")); CHECK(ValidateSnapshot(snapshot1)); CompileRun( "for (var i = 0; i < 1; ++i)\n" " a.shift();\n"); CcTest::heap()->CollectAllGarbage(i::Heap::kNoGCFlags); const v8::HeapSnapshot* snapshot2 = heap_profiler->TakeHeapSnapshot(v8_str("s2")); CHECK(ValidateSnapshot(snapshot2)); const v8::HeapGraphNode* global1 = GetGlobalObject(snapshot1); const v8::HeapGraphNode* global2 = GetGlobalObject(snapshot2); CHECK_NE_SNAPSHOT_OBJECT_ID(0, global1->GetId()); CHECK_EQ_SNAPSHOT_OBJECT_ID(global1->GetId(), global2->GetId()); const v8::HeapGraphNode* a1 = GetProperty(global1, v8::HeapGraphEdge::kProperty, "a"); CHECK_NE(NULL, a1); const v8::HeapGraphNode* k1 = GetProperty(a1, v8::HeapGraphEdge::kInternal, "elements"); CHECK_NE(NULL, k1); const v8::HeapGraphNode* a2 = GetProperty(global2, v8::HeapGraphEdge::kProperty, "a"); CHECK_NE(NULL, a2); const v8::HeapGraphNode* k2 = GetProperty(a2, v8::HeapGraphEdge::kInternal, "elements"); CHECK_NE(NULL, k2); CHECK_EQ_SNAPSHOT_OBJECT_ID(a1->GetId(), a2->GetId()); CHECK_EQ_SNAPSHOT_OBJECT_ID(k1->GetId(), k2->GetId()); } TEST(HeapEntryIdsAndGC) { LocalContext env; v8::HandleScope scope(env->GetIsolate()); v8::HeapProfiler* heap_profiler = env->GetIsolate()->GetHeapProfiler(); CompileRun( "function A() {}\n" "function B(x) { this.x = x; }\n" "var a = new A();\n" "var b = new B(a);"); v8::Local s1_str = v8_str("s1"); v8::Local s2_str = v8_str("s2"); const v8::HeapSnapshot* snapshot1 = heap_profiler->TakeHeapSnapshot(s1_str); CHECK(ValidateSnapshot(snapshot1)); CcTest::heap()->CollectAllGarbage(i::Heap::kNoGCFlags); const v8::HeapSnapshot* snapshot2 = heap_profiler->TakeHeapSnapshot(s2_str); CHECK(ValidateSnapshot(snapshot2)); CHECK_GT(snapshot1->GetMaxSnapshotJSObjectId(), 7000); CHECK(snapshot1->GetMaxSnapshotJSObjectId() <= snapshot2->GetMaxSnapshotJSObjectId()); const v8::HeapGraphNode* global1 = GetGlobalObject(snapshot1); const v8::HeapGraphNode* global2 = GetGlobalObject(snapshot2); CHECK_NE_SNAPSHOT_OBJECT_ID(0, global1->GetId()); CHECK_EQ_SNAPSHOT_OBJECT_ID(global1->GetId(), global2->GetId()); const v8::HeapGraphNode* A1 = GetProperty(global1, v8::HeapGraphEdge::kProperty, "A"); CHECK_NE(NULL, A1); const v8::HeapGraphNode* A2 = GetProperty(global2, v8::HeapGraphEdge::kProperty, "A"); CHECK_NE(NULL, A2); CHECK_NE_SNAPSHOT_OBJECT_ID(0, A1->GetId()); CHECK_EQ_SNAPSHOT_OBJECT_ID(A1->GetId(), A2->GetId()); const v8::HeapGraphNode* B1 = GetProperty(global1, v8::HeapGraphEdge::kProperty, "B"); CHECK_NE(NULL, B1); const v8::HeapGraphNode* B2 = GetProperty(global2, v8::HeapGraphEdge::kProperty, "B"); CHECK_NE(NULL, B2); CHECK_NE_SNAPSHOT_OBJECT_ID(0, B1->GetId()); CHECK_EQ_SNAPSHOT_OBJECT_ID(B1->GetId(), B2->GetId()); const v8::HeapGraphNode* a1 = GetProperty(global1, v8::HeapGraphEdge::kProperty, "a"); CHECK_NE(NULL, a1); const v8::HeapGraphNode* a2 = GetProperty(global2, v8::HeapGraphEdge::kProperty, "a"); CHECK_NE(NULL, a2); CHECK_NE_SNAPSHOT_OBJECT_ID(0, a1->GetId()); CHECK_EQ_SNAPSHOT_OBJECT_ID(a1->GetId(), a2->GetId()); const v8::HeapGraphNode* b1 = GetProperty(global1, v8::HeapGraphEdge::kProperty, "b"); CHECK_NE(NULL, b1); const v8::HeapGraphNode* b2 = GetProperty(global2, v8::HeapGraphEdge::kProperty, "b"); CHECK_NE(NULL, b2); CHECK_NE_SNAPSHOT_OBJECT_ID(0, b1->GetId()); CHECK_EQ_SNAPSHOT_OBJECT_ID(b1->GetId(), b2->GetId()); } TEST(HeapSnapshotRootPreservedAfterSorting) { LocalContext env; v8::HandleScope scope(env->GetIsolate()); v8::HeapProfiler* heap_profiler = env->GetIsolate()->GetHeapProfiler(); const v8::HeapSnapshot* snapshot = heap_profiler->TakeHeapSnapshot(v8_str("s")); CHECK(ValidateSnapshot(snapshot)); const v8::HeapGraphNode* root1 = snapshot->GetRoot(); const_cast(reinterpret_cast( snapshot))->GetSortedEntriesList(); const v8::HeapGraphNode* root2 = snapshot->GetRoot(); CHECK_EQ(root1, root2); } namespace { class TestJSONStream : public v8::OutputStream { public: TestJSONStream() : eos_signaled_(0), abort_countdown_(-1) {} explicit TestJSONStream(int abort_countdown) : eos_signaled_(0), abort_countdown_(abort_countdown) {} virtual ~TestJSONStream() {} virtual void EndOfStream() { ++eos_signaled_; } virtual WriteResult WriteAsciiChunk(char* buffer, int chars_written) { if (abort_countdown_ > 0) --abort_countdown_; if (abort_countdown_ == 0) return kAbort; CHECK_GT(chars_written, 0); i::Vector chunk = buffer_.AddBlock(chars_written, '\0'); i::MemCopy(chunk.start(), buffer, chars_written); return kContinue; } virtual WriteResult WriteUint32Chunk(uint32_t* buffer, int chars_written) { DCHECK(false); return kAbort; } void WriteTo(i::Vector dest) { buffer_.WriteTo(dest); } int eos_signaled() { return eos_signaled_; } int size() { return buffer_.size(); } private: i::Collector buffer_; int eos_signaled_; int abort_countdown_; }; class AsciiResource: public v8::String::ExternalAsciiStringResource { public: explicit AsciiResource(i::Vector string): data_(string.start()) { length_ = string.length(); } virtual const char* data() const { return data_; } virtual size_t length() const { return length_; } private: const char* data_; size_t length_; }; } // namespace TEST(HeapSnapshotJSONSerialization) { LocalContext env; v8::HandleScope scope(env->GetIsolate()); v8::HeapProfiler* heap_profiler = env->GetIsolate()->GetHeapProfiler(); #define STRING_LITERAL_FOR_TEST \ "\"String \\n\\r\\u0008\\u0081\\u0101\\u0801\\u8001\"" CompileRun( "function A(s) { this.s = s; }\n" "function B(x) { this.x = x; }\n" "var a = new A(" STRING_LITERAL_FOR_TEST ");\n" "var b = new B(a);"); const v8::HeapSnapshot* snapshot = heap_profiler->TakeHeapSnapshot(v8_str("json")); CHECK(ValidateSnapshot(snapshot)); TestJSONStream stream; snapshot->Serialize(&stream, v8::HeapSnapshot::kJSON); CHECK_GT(stream.size(), 0); CHECK_EQ(1, stream.eos_signaled()); i::ScopedVector json(stream.size()); stream.WriteTo(json); // Verify that snapshot string is valid JSON. AsciiResource* json_res = new AsciiResource(json); v8::Local json_string = v8::String::NewExternal(env->GetIsolate(), json_res); env->Global()->Set(v8_str("json_snapshot"), json_string); v8::Local snapshot_parse_result = CompileRun( "var parsed = JSON.parse(json_snapshot); true;"); CHECK(!snapshot_parse_result.IsEmpty()); // Verify that snapshot object has required fields. v8::Local parsed_snapshot = env->Global()->Get(v8_str("parsed"))->ToObject(); CHECK(parsed_snapshot->Has(v8_str("snapshot"))); CHECK(parsed_snapshot->Has(v8_str("nodes"))); CHECK(parsed_snapshot->Has(v8_str("edges"))); CHECK(parsed_snapshot->Has(v8_str("strings"))); // Get node and edge "member" offsets. v8::Local meta_analysis_result = CompileRun( "var meta = parsed.snapshot.meta;\n" "var edge_count_offset = meta.node_fields.indexOf('edge_count');\n" "var node_fields_count = meta.node_fields.length;\n" "var edge_fields_count = meta.edge_fields.length;\n" "var edge_type_offset = meta.edge_fields.indexOf('type');\n" "var edge_name_offset = meta.edge_fields.indexOf('name_or_index');\n" "var edge_to_node_offset = meta.edge_fields.indexOf('to_node');\n" "var property_type =" " meta.edge_types[edge_type_offset].indexOf('property');\n" "var shortcut_type =" " meta.edge_types[edge_type_offset].indexOf('shortcut');\n" "var node_count = parsed.nodes.length / node_fields_count;\n" "var first_edge_indexes = parsed.first_edge_indexes = [];\n" "for (var i = 0, first_edge_index = 0; i < node_count; ++i) {\n" " first_edge_indexes[i] = first_edge_index;\n" " first_edge_index += edge_fields_count *\n" " parsed.nodes[i * node_fields_count + edge_count_offset];\n" "}\n" "first_edge_indexes[node_count] = first_edge_index;\n"); CHECK(!meta_analysis_result.IsEmpty()); // A helper function for processing encoded nodes. CompileRun( "function GetChildPosByProperty(pos, prop_name, prop_type) {\n" " var nodes = parsed.nodes;\n" " var edges = parsed.edges;\n" " var strings = parsed.strings;\n" " var node_ordinal = pos / node_fields_count;\n" " for (var i = parsed.first_edge_indexes[node_ordinal],\n" " count = parsed.first_edge_indexes[node_ordinal + 1];\n" " i < count; i += edge_fields_count) {\n" " if (edges[i + edge_type_offset] === prop_type\n" " && strings[edges[i + edge_name_offset]] === prop_name)\n" " return edges[i + edge_to_node_offset];\n" " }\n" " return null;\n" "}\n"); // Get the string index using the path: -> .b.x.s v8::Local string_obj_pos_val = CompileRun( "GetChildPosByProperty(\n" " GetChildPosByProperty(\n" " GetChildPosByProperty(" " parsed.edges[edge_fields_count + edge_to_node_offset]," " \"b\", property_type),\n" " \"x\", property_type)," " \"s\", property_type)"); CHECK(!string_obj_pos_val.IsEmpty()); int string_obj_pos = static_cast(string_obj_pos_val->ToNumber()->Value()); v8::Local nodes_array = parsed_snapshot->Get(v8_str("nodes"))->ToObject(); int string_index = static_cast( nodes_array->Get(string_obj_pos + 1)->ToNumber()->Value()); CHECK_GT(string_index, 0); v8::Local strings_array = parsed_snapshot->Get(v8_str("strings"))->ToObject(); v8::Local string = strings_array->Get(string_index)->ToString(); v8::Local ref_string = CompileRun(STRING_LITERAL_FOR_TEST)->ToString(); #undef STRING_LITERAL_FOR_TEST CHECK_EQ(*v8::String::Utf8Value(ref_string), *v8::String::Utf8Value(string)); } TEST(HeapSnapshotJSONSerializationAborting) { LocalContext env; v8::HandleScope scope(env->GetIsolate()); v8::HeapProfiler* heap_profiler = env->GetIsolate()->GetHeapProfiler(); const v8::HeapSnapshot* snapshot = heap_profiler->TakeHeapSnapshot(v8_str("abort")); CHECK(ValidateSnapshot(snapshot)); TestJSONStream stream(5); snapshot->Serialize(&stream, v8::HeapSnapshot::kJSON); CHECK_GT(stream.size(), 0); CHECK_EQ(0, stream.eos_signaled()); } namespace { class TestStatsStream : public v8::OutputStream { public: TestStatsStream() : eos_signaled_(0), updates_written_(0), entries_count_(0), entries_size_(0), intervals_count_(0), first_interval_index_(-1) { } TestStatsStream(const TestStatsStream& stream) : v8::OutputStream(stream), eos_signaled_(stream.eos_signaled_), updates_written_(stream.updates_written_), entries_count_(stream.entries_count_), entries_size_(stream.entries_size_), intervals_count_(stream.intervals_count_), first_interval_index_(stream.first_interval_index_) { } virtual ~TestStatsStream() {} virtual void EndOfStream() { ++eos_signaled_; } virtual WriteResult WriteAsciiChunk(char* buffer, int chars_written) { DCHECK(false); return kAbort; } virtual WriteResult WriteHeapStatsChunk(v8::HeapStatsUpdate* buffer, int updates_written) { ++intervals_count_; DCHECK(updates_written); updates_written_ += updates_written; entries_count_ = 0; if (first_interval_index_ == -1 && updates_written != 0) first_interval_index_ = buffer[0].index; for (int i = 0; i < updates_written; ++i) { entries_count_ += buffer[i].count; entries_size_ += buffer[i].size; } return kContinue; } int eos_signaled() { return eos_signaled_; } int updates_written() { return updates_written_; } uint32_t entries_count() const { return entries_count_; } uint32_t entries_size() const { return entries_size_; } int intervals_count() const { return intervals_count_; } int first_interval_index() const { return first_interval_index_; } private: int eos_signaled_; int updates_written_; uint32_t entries_count_; uint32_t entries_size_; int intervals_count_; int first_interval_index_; }; } // namespace static TestStatsStream GetHeapStatsUpdate( v8::HeapProfiler* heap_profiler, v8::SnapshotObjectId* object_id = NULL) { TestStatsStream stream; v8::SnapshotObjectId last_seen_id = heap_profiler->GetHeapStats(&stream); if (object_id) *object_id = last_seen_id; CHECK_EQ(1, stream.eos_signaled()); return stream; } TEST(HeapSnapshotObjectsStats) { LocalContext env; v8::HandleScope scope(env->GetIsolate()); v8::HeapProfiler* heap_profiler = env->GetIsolate()->GetHeapProfiler(); heap_profiler->StartTrackingHeapObjects(); // We have to call GC 6 times. In other case the garbage will be // the reason of flakiness. for (int i = 0; i < 6; ++i) { CcTest::heap()->CollectAllGarbage(i::Heap::kNoGCFlags); } v8::SnapshotObjectId initial_id; { // Single chunk of data expected in update. Initial data. TestStatsStream stats_update = GetHeapStatsUpdate(heap_profiler, &initial_id); CHECK_EQ(1, stats_update.intervals_count()); CHECK_EQ(1, stats_update.updates_written()); CHECK_LT(0, stats_update.entries_size()); CHECK_EQ(0, stats_update.first_interval_index()); } // No data expected in update because nothing has happened. v8::SnapshotObjectId same_id; CHECK_EQ(0, GetHeapStatsUpdate(heap_profiler, &same_id).updates_written()); CHECK_EQ_SNAPSHOT_OBJECT_ID(initial_id, same_id); { v8::SnapshotObjectId additional_string_id; v8::HandleScope inner_scope_1(env->GetIsolate()); v8_str("string1"); { // Single chunk of data with one new entry expected in update. TestStatsStream stats_update = GetHeapStatsUpdate(heap_profiler, &additional_string_id); CHECK_LT(same_id, additional_string_id); CHECK_EQ(1, stats_update.intervals_count()); CHECK_EQ(1, stats_update.updates_written()); CHECK_LT(0, stats_update.entries_size()); CHECK_EQ(1, stats_update.entries_count()); CHECK_EQ(2, stats_update.first_interval_index()); } // No data expected in update because nothing happened. v8::SnapshotObjectId last_id; CHECK_EQ(0, GetHeapStatsUpdate(heap_profiler, &last_id).updates_written()); CHECK_EQ_SNAPSHOT_OBJECT_ID(additional_string_id, last_id); { v8::HandleScope inner_scope_2(env->GetIsolate()); v8_str("string2"); uint32_t entries_size; { v8::HandleScope inner_scope_3(env->GetIsolate()); v8_str("string3"); v8_str("string4"); { // Single chunk of data with three new entries expected in update. TestStatsStream stats_update = GetHeapStatsUpdate(heap_profiler); CHECK_EQ(1, stats_update.intervals_count()); CHECK_EQ(1, stats_update.updates_written()); CHECK_LT(0, entries_size = stats_update.entries_size()); CHECK_EQ(3, stats_update.entries_count()); CHECK_EQ(4, stats_update.first_interval_index()); } } { // Single chunk of data with two left entries expected in update. TestStatsStream stats_update = GetHeapStatsUpdate(heap_profiler); CHECK_EQ(1, stats_update.intervals_count()); CHECK_EQ(1, stats_update.updates_written()); CHECK_GT(entries_size, stats_update.entries_size()); CHECK_EQ(1, stats_update.entries_count()); // Two strings from forth interval were released. CHECK_EQ(4, stats_update.first_interval_index()); } } { // Single chunk of data with 0 left entries expected in update. TestStatsStream stats_update = GetHeapStatsUpdate(heap_profiler); CHECK_EQ(1, stats_update.intervals_count()); CHECK_EQ(1, stats_update.updates_written()); CHECK_EQ(0, stats_update.entries_size()); CHECK_EQ(0, stats_update.entries_count()); // The last string from forth interval was released. CHECK_EQ(4, stats_update.first_interval_index()); } } { // Single chunk of data with 0 left entries expected in update. TestStatsStream stats_update = GetHeapStatsUpdate(heap_profiler); CHECK_EQ(1, stats_update.intervals_count()); CHECK_EQ(1, stats_update.updates_written()); CHECK_EQ(0, stats_update.entries_size()); CHECK_EQ(0, stats_update.entries_count()); // The only string from the second interval was released. CHECK_EQ(2, stats_update.first_interval_index()); } v8::Local array = v8::Array::New(env->GetIsolate()); CHECK_EQ(0, array->Length()); // Force array's buffer allocation. array->Set(2, v8_num(7)); uint32_t entries_size; { // Single chunk of data with 2 entries expected in update. TestStatsStream stats_update = GetHeapStatsUpdate(heap_profiler); CHECK_EQ(1, stats_update.intervals_count()); CHECK_EQ(1, stats_update.updates_written()); CHECK_LT(0, entries_size = stats_update.entries_size()); // They are the array and its buffer. CHECK_EQ(2, stats_update.entries_count()); CHECK_EQ(8, stats_update.first_interval_index()); } for (int i = 0; i < 100; ++i) array->Set(i, v8_num(i)); { // Single chunk of data with 1 entry expected in update. TestStatsStream stats_update = GetHeapStatsUpdate(heap_profiler); CHECK_EQ(1, stats_update.intervals_count()); // The first interval was changed because old buffer was collected. // The second interval was changed because new buffer was allocated. CHECK_EQ(2, stats_update.updates_written()); CHECK_LT(entries_size, stats_update.entries_size()); CHECK_EQ(2, stats_update.entries_count()); CHECK_EQ(8, stats_update.first_interval_index()); } heap_profiler->StopTrackingHeapObjects(); } TEST(HeapObjectIds) { LocalContext env; v8::Isolate* isolate = env->GetIsolate(); v8::HandleScope scope(isolate); v8::HeapProfiler* heap_profiler = env->GetIsolate()->GetHeapProfiler(); const int kLength = 10; v8::Handle objects[kLength]; v8::SnapshotObjectId ids[kLength]; heap_profiler->StartTrackingHeapObjects(false); for (int i = 0; i < kLength; i++) { objects[i] = v8::Object::New(isolate); } GetHeapStatsUpdate(heap_profiler); for (int i = 0; i < kLength; i++) { v8::SnapshotObjectId id = heap_profiler->GetObjectId(objects[i]); CHECK_NE(v8::HeapProfiler::kUnknownObjectId, static_cast(id)); ids[i] = id; } heap_profiler->StopTrackingHeapObjects(); CcTest::heap()->CollectAllAvailableGarbage(); for (int i = 0; i < kLength; i++) { v8::SnapshotObjectId id = heap_profiler->GetObjectId(objects[i]); CHECK_EQ(static_cast(ids[i]), static_cast(id)); v8::Handle obj = heap_profiler->FindObjectById(ids[i]); CHECK_EQ(objects[i], obj); } heap_profiler->ClearObjectIds(); for (int i = 0; i < kLength; i++) { v8::SnapshotObjectId id = heap_profiler->GetObjectId(objects[i]); CHECK_EQ(v8::HeapProfiler::kUnknownObjectId, static_cast(id)); v8::Handle obj = heap_profiler->FindObjectById(ids[i]); CHECK(obj.IsEmpty()); } } static void CheckChildrenIds(const v8::HeapSnapshot* snapshot, const v8::HeapGraphNode* node, int level, int max_level) { if (level > max_level) return; CHECK_EQ(node, snapshot->GetNodeById(node->GetId())); for (int i = 0, count = node->GetChildrenCount(); i < count; ++i) { const v8::HeapGraphEdge* prop = node->GetChild(i); const v8::HeapGraphNode* child = snapshot->GetNodeById(prop->GetToNode()->GetId()); CHECK_EQ_SNAPSHOT_OBJECT_ID(prop->GetToNode()->GetId(), child->GetId()); CHECK_EQ(prop->GetToNode(), child); CheckChildrenIds(snapshot, child, level + 1, max_level); } } TEST(HeapSnapshotGetNodeById) { LocalContext env; v8::HandleScope scope(env->GetIsolate()); v8::HeapProfiler* heap_profiler = env->GetIsolate()->GetHeapProfiler(); const v8::HeapSnapshot* snapshot = heap_profiler->TakeHeapSnapshot(v8_str("id")); CHECK(ValidateSnapshot(snapshot)); const v8::HeapGraphNode* root = snapshot->GetRoot(); CheckChildrenIds(snapshot, root, 0, 3); // Check a big id, which should not exist yet. CHECK_EQ(NULL, snapshot->GetNodeById(0x1000000UL)); } TEST(HeapSnapshotGetSnapshotObjectId) { LocalContext env; v8::HandleScope scope(env->GetIsolate()); v8::HeapProfiler* heap_profiler = env->GetIsolate()->GetHeapProfiler(); CompileRun("globalObject = {};\n"); const v8::HeapSnapshot* snapshot = heap_profiler->TakeHeapSnapshot(v8_str("get_snapshot_object_id")); CHECK(ValidateSnapshot(snapshot)); const v8::HeapGraphNode* global = GetGlobalObject(snapshot); const v8::HeapGraphNode* global_object = GetProperty(global, v8::HeapGraphEdge::kProperty, "globalObject"); CHECK(global_object); v8::Local globalObjectHandle = env->Global()->Get( v8::String::NewFromUtf8(env->GetIsolate(), "globalObject")); CHECK(!globalObjectHandle.IsEmpty()); CHECK(globalObjectHandle->IsObject()); v8::SnapshotObjectId id = heap_profiler->GetObjectId(globalObjectHandle); CHECK_NE(static_cast(v8::HeapProfiler::kUnknownObjectId), id); CHECK_EQ(static_cast(id), global_object->GetId()); } TEST(HeapSnapshotUnknownSnapshotObjectId) { LocalContext env; v8::HandleScope scope(env->GetIsolate()); v8::HeapProfiler* heap_profiler = env->GetIsolate()->GetHeapProfiler(); CompileRun("globalObject = {};\n"); const v8::HeapSnapshot* snapshot = heap_profiler->TakeHeapSnapshot(v8_str("unknown_object_id")); CHECK(ValidateSnapshot(snapshot)); const v8::HeapGraphNode* node = snapshot->GetNodeById(v8::HeapProfiler::kUnknownObjectId); CHECK_EQ(NULL, node); } namespace { class TestActivityControl : public v8::ActivityControl { public: explicit TestActivityControl(int abort_count) : done_(0), total_(0), abort_count_(abort_count) {} ControlOption ReportProgressValue(int done, int total) { done_ = done; total_ = total; return --abort_count_ != 0 ? kContinue : kAbort; } int done() { return done_; } int total() { return total_; } private: int done_; int total_; int abort_count_; }; } TEST(TakeHeapSnapshotAborting) { LocalContext env; v8::HandleScope scope(env->GetIsolate()); v8::HeapProfiler* heap_profiler = env->GetIsolate()->GetHeapProfiler(); const int snapshots_count = heap_profiler->GetSnapshotCount(); TestActivityControl aborting_control(1); const v8::HeapSnapshot* no_snapshot = heap_profiler->TakeHeapSnapshot(v8_str("abort"), &aborting_control); CHECK_EQ(NULL, no_snapshot); CHECK_EQ(snapshots_count, heap_profiler->GetSnapshotCount()); CHECK_GT(aborting_control.total(), aborting_control.done()); TestActivityControl control(-1); // Don't abort. const v8::HeapSnapshot* snapshot = heap_profiler->TakeHeapSnapshot(v8_str("full"), &control); CHECK(ValidateSnapshot(snapshot)); CHECK_NE(NULL, snapshot); CHECK_EQ(snapshots_count + 1, heap_profiler->GetSnapshotCount()); CHECK_EQ(control.total(), control.done()); CHECK_GT(control.total(), 0); } namespace { class TestRetainedObjectInfo : public v8::RetainedObjectInfo { public: TestRetainedObjectInfo(int hash, const char* group_label, const char* label, intptr_t element_count = -1, intptr_t size = -1) : disposed_(false), hash_(hash), group_label_(group_label), label_(label), element_count_(element_count), size_(size) { instances.Add(this); } virtual ~TestRetainedObjectInfo() {} virtual void Dispose() { CHECK(!disposed_); disposed_ = true; } virtual bool IsEquivalent(RetainedObjectInfo* other) { return GetHash() == other->GetHash(); } virtual intptr_t GetHash() { return hash_; } virtual const char* GetGroupLabel() { return group_label_; } virtual const char* GetLabel() { return label_; } virtual intptr_t GetElementCount() { return element_count_; } virtual intptr_t GetSizeInBytes() { return size_; } bool disposed() { return disposed_; } static v8::RetainedObjectInfo* WrapperInfoCallback( uint16_t class_id, v8::Handle wrapper) { if (class_id == 1) { if (wrapper->IsString()) { v8::String::Utf8Value utf8(wrapper); if (strcmp(*utf8, "AAA") == 0) return new TestRetainedObjectInfo(1, "aaa-group", "aaa", 100); else if (strcmp(*utf8, "BBB") == 0) return new TestRetainedObjectInfo(1, "aaa-group", "aaa", 100); } } else if (class_id == 2) { if (wrapper->IsString()) { v8::String::Utf8Value utf8(wrapper); if (strcmp(*utf8, "CCC") == 0) return new TestRetainedObjectInfo(2, "ccc-group", "ccc"); } } CHECK(false); return NULL; } static i::List instances; private: bool disposed_; int hash_; const char* group_label_; const char* label_; intptr_t element_count_; intptr_t size_; }; i::List TestRetainedObjectInfo::instances; } static const v8::HeapGraphNode* GetNode(const v8::HeapGraphNode* parent, v8::HeapGraphNode::Type type, const char* name) { for (int i = 0, count = parent->GetChildrenCount(); i < count; ++i) { const v8::HeapGraphNode* node = parent->GetChild(i)->GetToNode(); if (node->GetType() == type && strcmp(name, const_cast( reinterpret_cast(node))->name()) == 0) { return node; } } return NULL; } TEST(HeapSnapshotRetainedObjectInfo) { LocalContext env; v8::Isolate* isolate = env->GetIsolate(); v8::HandleScope scope(isolate); v8::HeapProfiler* heap_profiler = isolate->GetHeapProfiler(); heap_profiler->SetWrapperClassInfoProvider( 1, TestRetainedObjectInfo::WrapperInfoCallback); heap_profiler->SetWrapperClassInfoProvider( 2, TestRetainedObjectInfo::WrapperInfoCallback); v8::Persistent p_AAA(isolate, v8_str("AAA")); p_AAA.SetWrapperClassId(1); v8::Persistent p_BBB(isolate, v8_str("BBB")); p_BBB.SetWrapperClassId(1); v8::Persistent p_CCC(isolate, v8_str("CCC")); p_CCC.SetWrapperClassId(2); CHECK_EQ(0, TestRetainedObjectInfo::instances.length()); const v8::HeapSnapshot* snapshot = heap_profiler->TakeHeapSnapshot(v8_str("retained")); CHECK(ValidateSnapshot(snapshot)); CHECK_EQ(3, TestRetainedObjectInfo::instances.length()); for (int i = 0; i < TestRetainedObjectInfo::instances.length(); ++i) { CHECK(TestRetainedObjectInfo::instances[i]->disposed()); delete TestRetainedObjectInfo::instances[i]; } const v8::HeapGraphNode* native_group_aaa = GetNode( snapshot->GetRoot(), v8::HeapGraphNode::kSynthetic, "aaa-group"); CHECK_NE(NULL, native_group_aaa); CHECK_EQ(1, native_group_aaa->GetChildrenCount()); const v8::HeapGraphNode* aaa = GetNode( native_group_aaa, v8::HeapGraphNode::kNative, "aaa / 100 entries"); CHECK_NE(NULL, aaa); CHECK_EQ(2, aaa->GetChildrenCount()); const v8::HeapGraphNode* native_group_ccc = GetNode( snapshot->GetRoot(), v8::HeapGraphNode::kSynthetic, "ccc-group"); const v8::HeapGraphNode* ccc = GetNode( native_group_ccc, v8::HeapGraphNode::kNative, "ccc"); CHECK_NE(NULL, ccc); const v8::HeapGraphNode* n_AAA = GetNode( aaa, v8::HeapGraphNode::kString, "AAA"); CHECK_NE(NULL, n_AAA); const v8::HeapGraphNode* n_BBB = GetNode( aaa, v8::HeapGraphNode::kString, "BBB"); CHECK_NE(NULL, n_BBB); CHECK_EQ(1, ccc->GetChildrenCount()); const v8::HeapGraphNode* n_CCC = GetNode( ccc, v8::HeapGraphNode::kString, "CCC"); CHECK_NE(NULL, n_CCC); CHECK_EQ(aaa, GetProperty(n_AAA, v8::HeapGraphEdge::kInternal, "native")); CHECK_EQ(aaa, GetProperty(n_BBB, v8::HeapGraphEdge::kInternal, "native")); CHECK_EQ(ccc, GetProperty(n_CCC, v8::HeapGraphEdge::kInternal, "native")); } class GraphWithImplicitRefs { public: static const int kObjectsCount = 4; explicit GraphWithImplicitRefs(LocalContext* env) { CHECK_EQ(NULL, instance_); instance_ = this; isolate_ = (*env)->GetIsolate(); for (int i = 0; i < kObjectsCount; i++) { objects_[i].Reset(isolate_, v8::Object::New(isolate_)); } (*env)->Global()->Set(v8_str("root_object"), v8::Local::New(isolate_, objects_[0])); } ~GraphWithImplicitRefs() { instance_ = NULL; } static void gcPrologue(v8::GCType type, v8::GCCallbackFlags flags) { instance_->AddImplicitReferences(); } private: void AddImplicitReferences() { // 0 -> 1 isolate_->SetObjectGroupId(objects_[0], v8::UniqueId(1)); isolate_->SetReferenceFromGroup( v8::UniqueId(1), objects_[1]); // Adding two more references: 1 -> 2, 1 -> 3 isolate_->SetReference(objects_[1].As(), objects_[2]); isolate_->SetReference(objects_[1].As(), objects_[3]); } v8::Persistent objects_[kObjectsCount]; static GraphWithImplicitRefs* instance_; v8::Isolate* isolate_; }; GraphWithImplicitRefs* GraphWithImplicitRefs::instance_ = NULL; TEST(HeapSnapshotImplicitReferences) { LocalContext env; v8::HandleScope scope(env->GetIsolate()); v8::HeapProfiler* heap_profiler = env->GetIsolate()->GetHeapProfiler(); GraphWithImplicitRefs graph(&env); v8::V8::AddGCPrologueCallback(&GraphWithImplicitRefs::gcPrologue); const v8::HeapSnapshot* snapshot = heap_profiler->TakeHeapSnapshot(v8_str("implicit_refs")); CHECK(ValidateSnapshot(snapshot)); const v8::HeapGraphNode* global_object = GetGlobalObject(snapshot); const v8::HeapGraphNode* obj0 = GetProperty( global_object, v8::HeapGraphEdge::kProperty, "root_object"); CHECK(obj0); CHECK_EQ(v8::HeapGraphNode::kObject, obj0->GetType()); const v8::HeapGraphNode* obj1 = GetProperty( obj0, v8::HeapGraphEdge::kInternal, "native"); CHECK(obj1); int implicit_targets_count = 0; for (int i = 0, count = obj1->GetChildrenCount(); i < count; ++i) { const v8::HeapGraphEdge* prop = obj1->GetChild(i); v8::String::Utf8Value prop_name(prop->GetName()); if (prop->GetType() == v8::HeapGraphEdge::kInternal && strcmp("native", *prop_name) == 0) { ++implicit_targets_count; } } CHECK_EQ(2, implicit_targets_count); v8::V8::RemoveGCPrologueCallback(&GraphWithImplicitRefs::gcPrologue); } TEST(DeleteAllHeapSnapshots) { LocalContext env; v8::HandleScope scope(env->GetIsolate()); v8::HeapProfiler* heap_profiler = env->GetIsolate()->GetHeapProfiler(); CHECK_EQ(0, heap_profiler->GetSnapshotCount()); heap_profiler->DeleteAllHeapSnapshots(); CHECK_EQ(0, heap_profiler->GetSnapshotCount()); CHECK_NE(NULL, heap_profiler->TakeHeapSnapshot(v8_str("1"))); CHECK_EQ(1, heap_profiler->GetSnapshotCount()); heap_profiler->DeleteAllHeapSnapshots(); CHECK_EQ(0, heap_profiler->GetSnapshotCount()); CHECK_NE(NULL, heap_profiler->TakeHeapSnapshot(v8_str("1"))); CHECK_NE(NULL, heap_profiler->TakeHeapSnapshot(v8_str("2"))); CHECK_EQ(2, heap_profiler->GetSnapshotCount()); heap_profiler->DeleteAllHeapSnapshots(); CHECK_EQ(0, heap_profiler->GetSnapshotCount()); } static const v8::HeapSnapshot* FindHeapSnapshot(v8::HeapProfiler* profiler, unsigned uid) { int length = profiler->GetSnapshotCount(); for (int i = 0; i < length; i++) { const v8::HeapSnapshot* snapshot = profiler->GetHeapSnapshot(i); if (snapshot->GetUid() == uid) { return snapshot; } } return NULL; } TEST(DeleteHeapSnapshot) { LocalContext env; v8::HandleScope scope(env->GetIsolate()); v8::HeapProfiler* heap_profiler = env->GetIsolate()->GetHeapProfiler(); CHECK_EQ(0, heap_profiler->GetSnapshotCount()); const v8::HeapSnapshot* s1 = heap_profiler->TakeHeapSnapshot(v8_str("1")); CHECK_NE(NULL, s1); CHECK_EQ(1, heap_profiler->GetSnapshotCount()); unsigned uid1 = s1->GetUid(); CHECK_EQ(s1, FindHeapSnapshot(heap_profiler, uid1)); const_cast(s1)->Delete(); CHECK_EQ(0, heap_profiler->GetSnapshotCount()); CHECK_EQ(NULL, FindHeapSnapshot(heap_profiler, uid1)); const v8::HeapSnapshot* s2 = heap_profiler->TakeHeapSnapshot(v8_str("2")); CHECK_NE(NULL, s2); CHECK_EQ(1, heap_profiler->GetSnapshotCount()); unsigned uid2 = s2->GetUid(); CHECK_NE(static_cast(uid1), static_cast(uid2)); CHECK_EQ(s2, FindHeapSnapshot(heap_profiler, uid2)); const v8::HeapSnapshot* s3 = heap_profiler->TakeHeapSnapshot(v8_str("3")); CHECK_NE(NULL, s3); CHECK_EQ(2, heap_profiler->GetSnapshotCount()); unsigned uid3 = s3->GetUid(); CHECK_NE(static_cast(uid1), static_cast(uid3)); CHECK_EQ(s3, FindHeapSnapshot(heap_profiler, uid3)); const_cast(s2)->Delete(); CHECK_EQ(1, heap_profiler->GetSnapshotCount()); CHECK_EQ(NULL, FindHeapSnapshot(heap_profiler, uid2)); CHECK_EQ(s3, FindHeapSnapshot(heap_profiler, uid3)); const_cast(s3)->Delete(); CHECK_EQ(0, heap_profiler->GetSnapshotCount()); CHECK_EQ(NULL, FindHeapSnapshot(heap_profiler, uid3)); } class NameResolver : public v8::HeapProfiler::ObjectNameResolver { public: virtual const char* GetName(v8::Handle object) { return "Global object name"; } }; TEST(GlobalObjectName) { LocalContext env; v8::HandleScope scope(env->GetIsolate()); v8::HeapProfiler* heap_profiler = env->GetIsolate()->GetHeapProfiler(); CompileRun("document = { URL:\"abcdefgh\" };"); NameResolver name_resolver; const v8::HeapSnapshot* snapshot = heap_profiler->TakeHeapSnapshot(v8_str("document"), NULL, &name_resolver); CHECK(ValidateSnapshot(snapshot)); const v8::HeapGraphNode* global = GetGlobalObject(snapshot); CHECK_NE(NULL, global); CHECK_EQ("Object / Global object name" , const_cast( reinterpret_cast(global))->name()); } TEST(GlobalObjectFields) { LocalContext env; v8::HandleScope scope(env->GetIsolate()); v8::HeapProfiler* heap_profiler = env->GetIsolate()->GetHeapProfiler(); CompileRun("obj = {};"); const v8::HeapSnapshot* snapshot = heap_profiler->TakeHeapSnapshot(v8_str("snapshot")); CHECK(ValidateSnapshot(snapshot)); const v8::HeapGraphNode* global = GetGlobalObject(snapshot); const v8::HeapGraphNode* builtins = GetProperty(global, v8::HeapGraphEdge::kInternal, "builtins"); CHECK_NE(NULL, builtins); const v8::HeapGraphNode* native_context = GetProperty(global, v8::HeapGraphEdge::kInternal, "native_context"); CHECK_NE(NULL, native_context); const v8::HeapGraphNode* global_context = GetProperty(global, v8::HeapGraphEdge::kInternal, "global_context"); CHECK_NE(NULL, global_context); const v8::HeapGraphNode* global_proxy = GetProperty(global, v8::HeapGraphEdge::kInternal, "global_proxy"); CHECK_NE(NULL, global_proxy); } TEST(NoHandleLeaks) { LocalContext env; v8::HandleScope scope(env->GetIsolate()); v8::HeapProfiler* heap_profiler = env->GetIsolate()->GetHeapProfiler(); CompileRun("document = { URL:\"abcdefgh\" };"); v8::Handle name(v8_str("leakz")); i::Isolate* isolate = CcTest::i_isolate(); int count_before = i::HandleScope::NumberOfHandles(isolate); heap_profiler->TakeHeapSnapshot(name); int count_after = i::HandleScope::NumberOfHandles(isolate); CHECK_EQ(count_before, count_after); } TEST(NodesIteration) { LocalContext env; v8::HandleScope scope(env->GetIsolate()); v8::HeapProfiler* heap_profiler = env->GetIsolate()->GetHeapProfiler(); const v8::HeapSnapshot* snapshot = heap_profiler->TakeHeapSnapshot(v8_str("iteration")); CHECK(ValidateSnapshot(snapshot)); const v8::HeapGraphNode* global = GetGlobalObject(snapshot); CHECK_NE(NULL, global); // Verify that we can find this object by iteration. const int nodes_count = snapshot->GetNodesCount(); int count = 0; for (int i = 0; i < nodes_count; ++i) { if (snapshot->GetNode(i) == global) ++count; } CHECK_EQ(1, count); } TEST(GetHeapValueForNode) { LocalContext env; v8::HandleScope scope(env->GetIsolate()); v8::HeapProfiler* heap_profiler = env->GetIsolate()->GetHeapProfiler(); CompileRun("a = { s_prop: \'value\', n_prop: \'value2\' };"); const v8::HeapSnapshot* snapshot = heap_profiler->TakeHeapSnapshot(v8_str("value")); CHECK(ValidateSnapshot(snapshot)); const v8::HeapGraphNode* global = GetGlobalObject(snapshot); CHECK(heap_profiler->FindObjectById(global->GetId())->IsObject()); v8::Local js_global = env->Global()->GetPrototype().As(); CHECK(js_global == heap_profiler->FindObjectById(global->GetId())); const v8::HeapGraphNode* obj = GetProperty( global, v8::HeapGraphEdge::kProperty, "a"); CHECK(heap_profiler->FindObjectById(obj->GetId())->IsObject()); v8::Local js_obj = js_global->Get(v8_str("a")).As(); CHECK(js_obj == heap_profiler->FindObjectById(obj->GetId())); const v8::HeapGraphNode* s_prop = GetProperty(obj, v8::HeapGraphEdge::kProperty, "s_prop"); v8::Local js_s_prop = js_obj->Get(v8_str("s_prop")).As(); CHECK(js_s_prop == heap_profiler->FindObjectById(s_prop->GetId())); const v8::HeapGraphNode* n_prop = GetProperty(obj, v8::HeapGraphEdge::kProperty, "n_prop"); v8::Local js_n_prop = js_obj->Get(v8_str("n_prop")).As(); CHECK(js_n_prop == heap_profiler->FindObjectById(n_prop->GetId())); } TEST(GetHeapValueForDeletedObject) { LocalContext env; v8::HandleScope scope(env->GetIsolate()); v8::HeapProfiler* heap_profiler = env->GetIsolate()->GetHeapProfiler(); // It is impossible to delete a global property, so we are about to delete a // property of the "a" object. Also, the "p" object can't be an empty one // because the empty object is static and isn't actually deleted. CompileRun("a = { p: { r: {} } };"); const v8::HeapSnapshot* snapshot = heap_profiler->TakeHeapSnapshot(v8_str("snapshot")); CHECK(ValidateSnapshot(snapshot)); const v8::HeapGraphNode* global = GetGlobalObject(snapshot); const v8::HeapGraphNode* obj = GetProperty( global, v8::HeapGraphEdge::kProperty, "a"); const v8::HeapGraphNode* prop = GetProperty( obj, v8::HeapGraphEdge::kProperty, "p"); { // Perform the check inside a nested local scope to avoid creating a // reference to the object we are deleting. v8::HandleScope scope(env->GetIsolate()); CHECK(heap_profiler->FindObjectById(prop->GetId())->IsObject()); } CompileRun("delete a.p;"); CHECK(heap_profiler->FindObjectById(prop->GetId()).IsEmpty()); } static int StringCmp(const char* ref, i::String* act) { i::SmartArrayPointer s_act = act->ToCString(); int result = strcmp(ref, s_act.get()); if (result != 0) fprintf(stderr, "Expected: \"%s\", Actual: \"%s\"\n", ref, s_act.get()); return result; } TEST(GetConstructorName) { LocalContext env; v8::HandleScope scope(env->GetIsolate()); CompileRun( "function Constructor1() {};\n" "var obj1 = new Constructor1();\n" "var Constructor2 = function() {};\n" "var obj2 = new Constructor2();\n" "var obj3 = {};\n" "obj3.constructor = function Constructor3() {};\n" "var obj4 = {};\n" "// Slow properties\n" "for (var i=0; i<2000; ++i) obj4[\"p\" + i] = i;\n" "obj4.constructor = function Constructor4() {};\n" "var obj5 = {};\n" "var obj6 = {};\n" "obj6.constructor = 6;"); v8::Local js_global = env->Global()->GetPrototype().As(); v8::Local obj1 = js_global->Get(v8_str("obj1")).As(); i::Handle js_obj1 = v8::Utils::OpenHandle(*obj1); CHECK_EQ(0, StringCmp( "Constructor1", i::V8HeapExplorer::GetConstructorName(*js_obj1))); v8::Local obj2 = js_global->Get(v8_str("obj2")).As(); i::Handle js_obj2 = v8::Utils::OpenHandle(*obj2); CHECK_EQ(0, StringCmp( "Constructor2", i::V8HeapExplorer::GetConstructorName(*js_obj2))); v8::Local obj3 = js_global->Get(v8_str("obj3")).As(); i::Handle js_obj3 = v8::Utils::OpenHandle(*obj3); // TODO(verwaest): Restore to Constructor3 once supported by the // heap-snapshot-generator. CHECK_EQ( 0, StringCmp("Object", i::V8HeapExplorer::GetConstructorName(*js_obj3))); v8::Local obj4 = js_global->Get(v8_str("obj4")).As(); i::Handle js_obj4 = v8::Utils::OpenHandle(*obj4); // TODO(verwaest): Restore to Constructor4 once supported by the // heap-snapshot-generator. CHECK_EQ( 0, StringCmp("Object", i::V8HeapExplorer::GetConstructorName(*js_obj4))); v8::Local obj5 = js_global->Get(v8_str("obj5")).As(); i::Handle js_obj5 = v8::Utils::OpenHandle(*obj5); CHECK_EQ(0, StringCmp( "Object", i::V8HeapExplorer::GetConstructorName(*js_obj5))); v8::Local obj6 = js_global->Get(v8_str("obj6")).As(); i::Handle js_obj6 = v8::Utils::OpenHandle(*obj6); CHECK_EQ(0, StringCmp( "Object", i::V8HeapExplorer::GetConstructorName(*js_obj6))); } TEST(FastCaseAccessors) { LocalContext env; v8::HandleScope scope(env->GetIsolate()); v8::HeapProfiler* heap_profiler = env->GetIsolate()->GetHeapProfiler(); CompileRun("var obj1 = {};\n" "obj1.__defineGetter__('propWithGetter', function Y() {\n" " return 42;\n" "});\n" "obj1.__defineSetter__('propWithSetter', function Z(value) {\n" " return this.value_ = value;\n" "});\n"); const v8::HeapSnapshot* snapshot = heap_profiler->TakeHeapSnapshot(v8_str("fastCaseAccessors")); CHECK(ValidateSnapshot(snapshot)); const v8::HeapGraphNode* global = GetGlobalObject(snapshot); CHECK_NE(NULL, global); const v8::HeapGraphNode* obj1 = GetProperty(global, v8::HeapGraphEdge::kProperty, "obj1"); CHECK_NE(NULL, obj1); const v8::HeapGraphNode* func; func = GetProperty(obj1, v8::HeapGraphEdge::kProperty, "get propWithGetter"); CHECK_NE(NULL, func); func = GetProperty(obj1, v8::HeapGraphEdge::kProperty, "set propWithGetter"); CHECK_EQ(NULL, func); func = GetProperty(obj1, v8::HeapGraphEdge::kProperty, "set propWithSetter"); CHECK_NE(NULL, func); func = GetProperty(obj1, v8::HeapGraphEdge::kProperty, "get propWithSetter"); CHECK_EQ(NULL, func); } TEST(SlowCaseAccessors) { LocalContext env; v8::HandleScope scope(env->GetIsolate()); v8::HeapProfiler* heap_profiler = env->GetIsolate()->GetHeapProfiler(); CompileRun("var obj1 = {};\n" "for (var i = 0; i < 100; ++i) obj1['z' + i] = {};" "obj1.__defineGetter__('propWithGetter', function Y() {\n" " return 42;\n" "});\n" "obj1.__defineSetter__('propWithSetter', function Z(value) {\n" " return this.value_ = value;\n" "});\n"); const v8::HeapSnapshot* snapshot = heap_profiler->TakeHeapSnapshot(v8_str("slowCaseAccessors")); CHECK(ValidateSnapshot(snapshot)); const v8::HeapGraphNode* global = GetGlobalObject(snapshot); CHECK_NE(NULL, global); const v8::HeapGraphNode* obj1 = GetProperty(global, v8::HeapGraphEdge::kProperty, "obj1"); CHECK_NE(NULL, obj1); const v8::HeapGraphNode* func; func = GetProperty(obj1, v8::HeapGraphEdge::kProperty, "get propWithGetter"); CHECK_NE(NULL, func); func = GetProperty(obj1, v8::HeapGraphEdge::kProperty, "set propWithGetter"); CHECK_EQ(NULL, func); func = GetProperty(obj1, v8::HeapGraphEdge::kProperty, "set propWithSetter"); CHECK_NE(NULL, func); func = GetProperty(obj1, v8::HeapGraphEdge::kProperty, "get propWithSetter"); CHECK_EQ(NULL, func); } TEST(HiddenPropertiesFastCase) { LocalContext env; v8::HandleScope scope(env->GetIsolate()); v8::HeapProfiler* heap_profiler = env->GetIsolate()->GetHeapProfiler(); CompileRun( "function C(x) { this.a = this; this.b = x; }\n" "c = new C(2012);\n"); const v8::HeapSnapshot* snapshot = heap_profiler->TakeHeapSnapshot(v8_str("HiddenPropertiesFastCase1")); CHECK(ValidateSnapshot(snapshot)); const v8::HeapGraphNode* global = GetGlobalObject(snapshot); const v8::HeapGraphNode* c = GetProperty(global, v8::HeapGraphEdge::kProperty, "c"); CHECK_NE(NULL, c); const v8::HeapGraphNode* hidden_props = GetProperty(c, v8::HeapGraphEdge::kInternal, "hidden_properties"); CHECK_EQ(NULL, hidden_props); v8::Handle cHandle = env->Global()->Get(v8::String::NewFromUtf8(env->GetIsolate(), "c")); CHECK(!cHandle.IsEmpty() && cHandle->IsObject()); cHandle->ToObject()->SetHiddenValue(v8_str("key"), v8_str("val")); snapshot = heap_profiler->TakeHeapSnapshot( v8_str("HiddenPropertiesFastCase2")); CHECK(ValidateSnapshot(snapshot)); global = GetGlobalObject(snapshot); c = GetProperty(global, v8::HeapGraphEdge::kProperty, "c"); CHECK_NE(NULL, c); hidden_props = GetProperty(c, v8::HeapGraphEdge::kInternal, "hidden_properties"); CHECK_NE(NULL, hidden_props); } bool HasWeakEdge(const v8::HeapGraphNode* node) { for (int i = 0; i < node->GetChildrenCount(); ++i) { const v8::HeapGraphEdge* handle_edge = node->GetChild(i); if (handle_edge->GetType() == v8::HeapGraphEdge::kWeak) return true; } return false; } bool HasWeakGlobalHandle() { v8::Isolate* isolate = CcTest::isolate(); v8::HeapProfiler* heap_profiler = isolate->GetHeapProfiler(); const v8::HeapSnapshot* snapshot = heap_profiler->TakeHeapSnapshot(v8_str("weaks")); CHECK(ValidateSnapshot(snapshot)); const v8::HeapGraphNode* gc_roots = GetNode( snapshot->GetRoot(), v8::HeapGraphNode::kSynthetic, "(GC roots)"); CHECK_NE(NULL, gc_roots); const v8::HeapGraphNode* global_handles = GetNode( gc_roots, v8::HeapGraphNode::kSynthetic, "(Global handles)"); CHECK_NE(NULL, global_handles); return HasWeakEdge(global_handles); } static void PersistentHandleCallback( const v8::WeakCallbackData >& data) { data.GetParameter()->Reset(); delete data.GetParameter(); } TEST(WeakGlobalHandle) { LocalContext env; v8::HandleScope scope(env->GetIsolate()); CHECK(!HasWeakGlobalHandle()); v8::Persistent handle(env->GetIsolate(), v8::Object::New(env->GetIsolate())); handle.SetWeak(&handle, PersistentHandleCallback); CHECK(HasWeakGlobalHandle()); } TEST(SfiAndJsFunctionWeakRefs) { LocalContext env; v8::HandleScope scope(env->GetIsolate()); v8::HeapProfiler* heap_profiler = env->GetIsolate()->GetHeapProfiler(); CompileRun( "fun = (function (x) { return function () { return x + 1; } })(1);"); const v8::HeapSnapshot* snapshot = heap_profiler->TakeHeapSnapshot(v8_str("fun")); CHECK(ValidateSnapshot(snapshot)); const v8::HeapGraphNode* global = GetGlobalObject(snapshot); CHECK_NE(NULL, global); const v8::HeapGraphNode* fun = GetProperty(global, v8::HeapGraphEdge::kProperty, "fun"); CHECK(!HasWeakEdge(fun)); const v8::HeapGraphNode* shared = GetProperty(fun, v8::HeapGraphEdge::kInternal, "shared"); CHECK(!HasWeakEdge(shared)); } TEST(NoDebugObjectInSnapshot) { LocalContext env; v8::HandleScope scope(env->GetIsolate()); v8::HeapProfiler* heap_profiler = env->GetIsolate()->GetHeapProfiler(); CHECK(CcTest::i_isolate()->debug()->Load()); CompileRun("foo = {};"); const v8::HeapSnapshot* snapshot = heap_profiler->TakeHeapSnapshot(v8_str("snapshot")); CHECK(ValidateSnapshot(snapshot)); const v8::HeapGraphNode* root = snapshot->GetRoot(); int globals_count = 0; for (int i = 0; i < root->GetChildrenCount(); ++i) { const v8::HeapGraphEdge* edge = root->GetChild(i); if (edge->GetType() == v8::HeapGraphEdge::kShortcut) { ++globals_count; const v8::HeapGraphNode* global = edge->GetToNode(); const v8::HeapGraphNode* foo = GetProperty(global, v8::HeapGraphEdge::kProperty, "foo"); CHECK_NE(NULL, foo); } } CHECK_EQ(1, globals_count); } TEST(AllStrongGcRootsHaveNames) { LocalContext env; v8::HandleScope scope(env->GetIsolate()); v8::HeapProfiler* heap_profiler = env->GetIsolate()->GetHeapProfiler(); CompileRun("foo = {};"); const v8::HeapSnapshot* snapshot = heap_profiler->TakeHeapSnapshot(v8_str("snapshot")); CHECK(ValidateSnapshot(snapshot)); const v8::HeapGraphNode* gc_roots = GetNode( snapshot->GetRoot(), v8::HeapGraphNode::kSynthetic, "(GC roots)"); CHECK_NE(NULL, gc_roots); const v8::HeapGraphNode* strong_roots = GetNode( gc_roots, v8::HeapGraphNode::kSynthetic, "(Strong roots)"); CHECK_NE(NULL, strong_roots); for (int i = 0; i < strong_roots->GetChildrenCount(); ++i) { const v8::HeapGraphEdge* edge = strong_roots->GetChild(i); CHECK_EQ(v8::HeapGraphEdge::kInternal, edge->GetType()); v8::String::Utf8Value name(edge->GetName()); CHECK(isalpha(**name)); } } TEST(NoRefsToNonEssentialEntries) { LocalContext env; v8::HandleScope scope(env->GetIsolate()); v8::HeapProfiler* heap_profiler = env->GetIsolate()->GetHeapProfiler(); CompileRun("global_object = {};\n"); const v8::HeapSnapshot* snapshot = heap_profiler->TakeHeapSnapshot(v8_str("snapshot")); CHECK(ValidateSnapshot(snapshot)); const v8::HeapGraphNode* global = GetGlobalObject(snapshot); const v8::HeapGraphNode* global_object = GetProperty(global, v8::HeapGraphEdge::kProperty, "global_object"); CHECK_NE(NULL, global_object); const v8::HeapGraphNode* properties = GetProperty(global_object, v8::HeapGraphEdge::kInternal, "properties"); CHECK_EQ(NULL, properties); const v8::HeapGraphNode* elements = GetProperty(global_object, v8::HeapGraphEdge::kInternal, "elements"); CHECK_EQ(NULL, elements); } TEST(MapHasDescriptorsAndTransitions) { LocalContext env; v8::HandleScope scope(env->GetIsolate()); v8::HeapProfiler* heap_profiler = env->GetIsolate()->GetHeapProfiler(); CompileRun("obj = { a: 10 };\n"); const v8::HeapSnapshot* snapshot = heap_profiler->TakeHeapSnapshot(v8_str("snapshot")); CHECK(ValidateSnapshot(snapshot)); const v8::HeapGraphNode* global = GetGlobalObject(snapshot); const v8::HeapGraphNode* global_object = GetProperty(global, v8::HeapGraphEdge::kProperty, "obj"); CHECK_NE(NULL, global_object); const v8::HeapGraphNode* map = GetProperty(global_object, v8::HeapGraphEdge::kInternal, "map"); CHECK_NE(NULL, map); const v8::HeapGraphNode* own_descriptors = GetProperty( map, v8::HeapGraphEdge::kInternal, "descriptors"); CHECK_NE(NULL, own_descriptors); const v8::HeapGraphNode* own_transitions = GetProperty( map, v8::HeapGraphEdge::kInternal, "transitions"); CHECK_EQ(NULL, own_transitions); } TEST(ManyLocalsInSharedContext) { LocalContext env; v8::HandleScope scope(env->GetIsolate()); v8::HeapProfiler* heap_profiler = env->GetIsolate()->GetHeapProfiler(); int num_objects = 6000; CompileRun( "var n = 6000;" "var result = [];" "result.push('(function outer() {');" "for (var i = 0; i < n; i++) {" " var f = 'function f_' + i + '() { ';" " if (i > 0)" " f += 'f_' + (i - 1) + '();';" " f += ' }';" " result.push(f);" "}" "result.push('return f_' + (n - 1) + ';');" "result.push('})()');" "var ok = eval(result.join('\\n'));"); const v8::HeapSnapshot* snapshot = heap_profiler->TakeHeapSnapshot(v8_str("snapshot")); CHECK(ValidateSnapshot(snapshot)); const v8::HeapGraphNode* global = GetGlobalObject(snapshot); CHECK_NE(NULL, global); const v8::HeapGraphNode* ok_object = GetProperty(global, v8::HeapGraphEdge::kProperty, "ok"); CHECK_NE(NULL, ok_object); const v8::HeapGraphNode* context_object = GetProperty(ok_object, v8::HeapGraphEdge::kInternal, "context"); CHECK_NE(NULL, context_object); // Check the objects are not duplicated in the context. CHECK_EQ(v8::internal::Context::MIN_CONTEXT_SLOTS + num_objects - 1, context_object->GetChildrenCount()); // Check all the objects have got their names. // ... well check just every 15th because otherwise it's too slow in debug. for (int i = 0; i < num_objects - 1; i += 15) { i::EmbeddedVector var_name; i::SNPrintF(var_name, "f_%d", i); const v8::HeapGraphNode* f_object = GetProperty( context_object, v8::HeapGraphEdge::kContextVariable, var_name.start()); CHECK_NE(NULL, f_object); } } TEST(AllocationSitesAreVisible) { LocalContext env; v8::Isolate* isolate = env->GetIsolate(); v8::HandleScope scope(isolate); v8::HeapProfiler* heap_profiler = isolate->GetHeapProfiler(); CompileRun( "fun = function () { var a = [3, 2, 1]; return a; }\n" "fun();"); const v8::HeapSnapshot* snapshot = heap_profiler->TakeHeapSnapshot(v8_str("snapshot")); CHECK(ValidateSnapshot(snapshot)); const v8::HeapGraphNode* global = GetGlobalObject(snapshot); CHECK_NE(NULL, global); const v8::HeapGraphNode* fun_code = GetProperty(global, v8::HeapGraphEdge::kProperty, "fun"); CHECK_NE(NULL, fun_code); const v8::HeapGraphNode* literals = GetProperty(fun_code, v8::HeapGraphEdge::kInternal, "literals"); CHECK_NE(NULL, literals); CHECK_EQ(v8::HeapGraphNode::kArray, literals->GetType()); CHECK_EQ(2, literals->GetChildrenCount()); // The second value in the literals array should be the boilerplate, // after an AllocationSite. const v8::HeapGraphEdge* prop = literals->GetChild(1); const v8::HeapGraphNode* allocation_site = prop->GetToNode(); v8::String::Utf8Value name(allocation_site->GetName()); CHECK_EQ("system / AllocationSite", *name); const v8::HeapGraphNode* transition_info = GetProperty(allocation_site, v8::HeapGraphEdge::kInternal, "transition_info"); CHECK_NE(NULL, transition_info); const v8::HeapGraphNode* elements = GetProperty(transition_info, v8::HeapGraphEdge::kInternal, "elements"); CHECK_NE(NULL, elements); CHECK_EQ(v8::HeapGraphNode::kArray, elements->GetType()); CHECK_EQ(v8::internal::FixedArray::SizeFor(3), static_cast(elements->GetShallowSize())); v8::Handle array_val = heap_profiler->FindObjectById(transition_info->GetId()); CHECK(array_val->IsArray()); v8::Handle array = v8::Handle::Cast(array_val); // Verify the array is "a" in the code above. CHECK_EQ(3, array->Length()); CHECK_EQ(v8::Integer::New(isolate, 3), array->Get(v8::Integer::New(isolate, 0))); CHECK_EQ(v8::Integer::New(isolate, 2), array->Get(v8::Integer::New(isolate, 1))); CHECK_EQ(v8::Integer::New(isolate, 1), array->Get(v8::Integer::New(isolate, 2))); } TEST(JSFunctionHasCodeLink) { LocalContext env; v8::HandleScope scope(env->GetIsolate()); v8::HeapProfiler* heap_profiler = env->GetIsolate()->GetHeapProfiler(); CompileRun("function foo(x, y) { return x + y; }\n"); const v8::HeapSnapshot* snapshot = heap_profiler->TakeHeapSnapshot(v8_str("snapshot")); CHECK(ValidateSnapshot(snapshot)); const v8::HeapGraphNode* global = GetGlobalObject(snapshot); const v8::HeapGraphNode* foo_func = GetProperty(global, v8::HeapGraphEdge::kProperty, "foo"); CHECK_NE(NULL, foo_func); const v8::HeapGraphNode* code = GetProperty(foo_func, v8::HeapGraphEdge::kInternal, "code"); CHECK_NE(NULL, code); } static const v8::HeapGraphNode* GetNodeByPath(const v8::HeapSnapshot* snapshot, const char* path[], int depth) { const v8::HeapGraphNode* node = snapshot->GetRoot(); for (int current_depth = 0; current_depth < depth; ++current_depth) { int i, count = node->GetChildrenCount(); for (i = 0; i < count; ++i) { const v8::HeapGraphEdge* edge = node->GetChild(i); const v8::HeapGraphNode* to_node = edge->GetToNode(); v8::String::Utf8Value edge_name(edge->GetName()); v8::String::Utf8Value node_name(to_node->GetName()); i::EmbeddedVector name; i::SNPrintF(name, "%s::%s", *edge_name, *node_name); if (strstr(name.start(), path[current_depth])) { node = to_node; break; } } if (i == count) return NULL; } return node; } TEST(CheckCodeNames) { LocalContext env; v8::HandleScope scope(env->GetIsolate()); v8::HeapProfiler* heap_profiler = env->GetIsolate()->GetHeapProfiler(); CompileRun("var a = 1.1;"); const v8::HeapSnapshot* snapshot = heap_profiler->TakeHeapSnapshot(v8_str("CheckCodeNames")); CHECK(ValidateSnapshot(snapshot)); const char* stub_path[] = { "::(GC roots)", "::(Strong roots)", "code_stubs::", "::(ArraySingleArgumentConstructorStub code)" }; const v8::HeapGraphNode* node = GetNodeByPath(snapshot, stub_path, arraysize(stub_path)); CHECK_NE(NULL, node); const char* builtin_path1[] = { "::(GC roots)", "::(Builtins)", "::(KeyedLoadIC_Generic builtin)" }; node = GetNodeByPath(snapshot, builtin_path1, arraysize(builtin_path1)); CHECK_NE(NULL, node); const char* builtin_path2[] = { "::(GC roots)", "::(Builtins)", "::(CompileUnoptimized builtin)" }; node = GetNodeByPath(snapshot, builtin_path2, arraysize(builtin_path2)); CHECK_NE(NULL, node); v8::String::Utf8Value node_name(node->GetName()); CHECK_EQ("(CompileUnoptimized builtin)", *node_name); } static const char* record_trace_tree_source = "var topFunctions = [];\n" "var global = this;\n" "function generateFunctions(width, depth) {\n" " var script = [];\n" " for (var i = 0; i < width; i++) {\n" " for (var j = 0; j < depth; j++) {\n" " script.push('function f_' + i + '_' + j + '(x) {\\n');\n" " script.push(' try {\\n');\n" " if (j < depth-2) {\n" " script.push(' return f_' + i + '_' + (j+1) + '(x+1);\\n');\n" " } else if (j == depth - 2) {\n" " script.push(' return new f_' + i + '_' + (depth - 1) + '();\\n');\n" " } else if (j == depth - 1) {\n" " script.push(' this.ts = Date.now();\\n');\n" " }\n" " script.push(' } catch (e) {}\\n');\n" " script.push('}\\n');\n" " \n" " }\n" " }\n" " var script = script.join('');\n" " // throw script;\n" " global.eval(script);\n" " for (var i = 0; i < width; i++) {\n" " topFunctions.push(this['f_' + i + '_0']);\n" " }\n" "}\n" "\n" "var width = 3;\n" "var depth = 3;\n" "generateFunctions(width, depth);\n" "var instances = [];\n" "function start() {\n" " for (var i = 0; i < width; i++) {\n" " instances.push(topFunctions[i](0));\n" " }\n" "}\n" "\n" "for (var i = 0; i < 100; i++) start();\n"; static AllocationTraceNode* FindNode( AllocationTracker* tracker, const Vector& names) { AllocationTraceNode* node = tracker->trace_tree()->root(); for (int i = 0; node != NULL && i < names.length(); i++) { const char* name = names[i]; Vector children = node->children(); node = NULL; for (int j = 0; j < children.length(); j++) { unsigned index = children[j]->function_info_index(); AllocationTracker::FunctionInfo* info = tracker->function_info_list()[index]; if (info && strcmp(info->name, name) == 0) { node = children[j]; break; } } } return node; } TEST(ArrayGrowLeftTrim) { LocalContext env; v8::HandleScope scope(env->GetIsolate()); v8::HeapProfiler* heap_profiler = env->GetIsolate()->GetHeapProfiler(); heap_profiler->StartTrackingHeapObjects(true); CompileRun( "var a = [];\n" "for (var i = 0; i < 5; ++i)\n" " a[i] = i;\n" "for (var i = 0; i < 3; ++i)\n" " a.shift();\n"); const char* names[] = {""}; AllocationTracker* tracker = reinterpret_cast(heap_profiler)->allocation_tracker(); CHECK_NE(NULL, tracker); // Resolve all function locations. tracker->PrepareForSerialization(); // Print for better diagnostics in case of failure. tracker->trace_tree()->Print(tracker); AllocationTraceNode* node = FindNode(tracker, Vector(names, arraysize(names))); CHECK_NE(NULL, node); CHECK_GE(node->allocation_count(), 2); CHECK_GE(node->allocation_size(), 4 * 5); heap_profiler->StopTrackingHeapObjects(); } TEST(TrackHeapAllocations) { v8::HandleScope scope(v8::Isolate::GetCurrent()); LocalContext env; v8::HeapProfiler* heap_profiler = env->GetIsolate()->GetHeapProfiler(); heap_profiler->StartTrackingHeapObjects(true); CompileRun(record_trace_tree_source); AllocationTracker* tracker = reinterpret_cast(heap_profiler)->allocation_tracker(); CHECK_NE(NULL, tracker); // Resolve all function locations. tracker->PrepareForSerialization(); // Print for better diagnostics in case of failure. tracker->trace_tree()->Print(tracker); const char* names[] = {"", "start", "f_0_0", "f_0_1", "f_0_2"}; AllocationTraceNode* node = FindNode(tracker, Vector(names, arraysize(names))); CHECK_NE(NULL, node); CHECK_GE(node->allocation_count(), 100); CHECK_GE(node->allocation_size(), 4 * node->allocation_count()); heap_profiler->StopTrackingHeapObjects(); } static const char* inline_heap_allocation_source = "function f_0(x) {\n" " return f_1(x+1);\n" "}\n" "%NeverOptimizeFunction(f_0);\n" "function f_1(x) {\n" " return new f_2(x+1);\n" "}\n" "function f_2(x) {\n" " this.foo = x;\n" "}\n" "var instances = [];\n" "function start() {\n" " instances.push(f_0(0));\n" "}\n" "\n" "for (var i = 0; i < 100; i++) start();\n"; TEST(TrackBumpPointerAllocations) { i::FLAG_allow_natives_syntax = true; v8::HandleScope scope(v8::Isolate::GetCurrent()); LocalContext env; v8::HeapProfiler* heap_profiler = env->GetIsolate()->GetHeapProfiler(); const char* names[] = {"", "start", "f_0", "f_1"}; // First check that normally all allocations are recorded. { heap_profiler->StartTrackingHeapObjects(true); CompileRun(inline_heap_allocation_source); AllocationTracker* tracker = reinterpret_cast(heap_profiler)->allocation_tracker(); CHECK_NE(NULL, tracker); // Resolve all function locations. tracker->PrepareForSerialization(); // Print for better diagnostics in case of failure. tracker->trace_tree()->Print(tracker); AllocationTraceNode* node = FindNode(tracker, Vector(names, arraysize(names))); CHECK_NE(NULL, node); CHECK_GE(node->allocation_count(), 100); CHECK_GE(node->allocation_size(), 4 * node->allocation_count()); heap_profiler->StopTrackingHeapObjects(); } { heap_profiler->StartTrackingHeapObjects(true); // Now check that not all allocations are tracked if we manually reenable // inline allocations. CHECK(CcTest::heap()->inline_allocation_disabled()); CcTest::heap()->EnableInlineAllocation(); CompileRun(inline_heap_allocation_source); AllocationTracker* tracker = reinterpret_cast(heap_profiler)->allocation_tracker(); CHECK_NE(NULL, tracker); // Resolve all function locations. tracker->PrepareForSerialization(); // Print for better diagnostics in case of failure. tracker->trace_tree()->Print(tracker); AllocationTraceNode* node = FindNode(tracker, Vector(names, arraysize(names))); CHECK_NE(NULL, node); CHECK_LT(node->allocation_count(), 100); CcTest::heap()->DisableInlineAllocation(); heap_profiler->StopTrackingHeapObjects(); } } TEST(TrackV8ApiAllocation) { v8::HandleScope scope(v8::Isolate::GetCurrent()); LocalContext env; v8::HeapProfiler* heap_profiler = env->GetIsolate()->GetHeapProfiler(); const char* names[] = { "(V8 API)" }; heap_profiler->StartTrackingHeapObjects(true); v8::Handle o1 = v8::Object::New(env->GetIsolate()); o1->Clone(); AllocationTracker* tracker = reinterpret_cast(heap_profiler)->allocation_tracker(); CHECK_NE(NULL, tracker); // Resolve all function locations. tracker->PrepareForSerialization(); // Print for better diagnostics in case of failure. tracker->trace_tree()->Print(tracker); AllocationTraceNode* node = FindNode(tracker, Vector(names, arraysize(names))); CHECK_NE(NULL, node); CHECK_GE(node->allocation_count(), 2); CHECK_GE(node->allocation_size(), 4 * node->allocation_count()); heap_profiler->StopTrackingHeapObjects(); } TEST(ArrayBufferAndArrayBufferView) { LocalContext env; v8::HandleScope scope(env->GetIsolate()); v8::HeapProfiler* heap_profiler = env->GetIsolate()->GetHeapProfiler(); CompileRun("arr1 = new Uint32Array(100);\n"); const v8::HeapSnapshot* snapshot = heap_profiler->TakeHeapSnapshot(v8_str("snapshot")); CHECK(ValidateSnapshot(snapshot)); const v8::HeapGraphNode* global = GetGlobalObject(snapshot); const v8::HeapGraphNode* arr1_obj = GetProperty(global, v8::HeapGraphEdge::kProperty, "arr1"); CHECK_NE(NULL, arr1_obj); const v8::HeapGraphNode* arr1_buffer = GetProperty(arr1_obj, v8::HeapGraphEdge::kInternal, "buffer"); CHECK_NE(NULL, arr1_buffer); const v8::HeapGraphNode* first_view = GetProperty(arr1_buffer, v8::HeapGraphEdge::kWeak, "weak_first_view"); CHECK_NE(NULL, first_view); const v8::HeapGraphNode* backing_store = GetProperty(arr1_buffer, v8::HeapGraphEdge::kInternal, "backing_store"); CHECK_NE(NULL, backing_store); CHECK_EQ(400, static_cast(backing_store->GetShallowSize())); } static int GetRetainersCount(const v8::HeapSnapshot* snapshot, const v8::HeapGraphNode* node) { int count = 0; for (int i = 0, l = snapshot->GetNodesCount(); i < l; ++i) { const v8::HeapGraphNode* parent = snapshot->GetNode(i); for (int j = 0, l2 = parent->GetChildrenCount(); j < l2; ++j) { if (parent->GetChild(j)->GetToNode() == node) { ++count; } } } return count; } TEST(ArrayBufferSharedBackingStore) { LocalContext env; v8::Isolate* isolate = env->GetIsolate(); v8::HandleScope handle_scope(isolate); v8::HeapProfiler* heap_profiler = isolate->GetHeapProfiler(); v8::Local ab = v8::ArrayBuffer::New(isolate, 1024); CHECK_EQ(1024, static_cast(ab->ByteLength())); CHECK(!ab->IsExternal()); v8::ArrayBuffer::Contents ab_contents = ab->Externalize(); CHECK(ab->IsExternal()); CHECK_EQ(1024, static_cast(ab_contents.ByteLength())); void* data = ab_contents.Data(); DCHECK(data != NULL); v8::Local ab2 = v8::ArrayBuffer::New(isolate, data, ab_contents.ByteLength()); CHECK(ab2->IsExternal()); env->Global()->Set(v8_str("ab1"), ab); env->Global()->Set(v8_str("ab2"), ab2); v8::Handle result = CompileRun("ab2.byteLength"); CHECK_EQ(1024, result->Int32Value()); const v8::HeapSnapshot* snapshot = heap_profiler->TakeHeapSnapshot(v8_str("snapshot")); CHECK(ValidateSnapshot(snapshot)); const v8::HeapGraphNode* global = GetGlobalObject(snapshot); const v8::HeapGraphNode* ab1_node = GetProperty(global, v8::HeapGraphEdge::kProperty, "ab1"); CHECK_NE(NULL, ab1_node); const v8::HeapGraphNode* ab1_data = GetProperty(ab1_node, v8::HeapGraphEdge::kInternal, "backing_store"); CHECK_NE(NULL, ab1_data); const v8::HeapGraphNode* ab2_node = GetProperty(global, v8::HeapGraphEdge::kProperty, "ab2"); CHECK_NE(NULL, ab2_node); const v8::HeapGraphNode* ab2_data = GetProperty(ab2_node, v8::HeapGraphEdge::kInternal, "backing_store"); CHECK_NE(NULL, ab2_data); CHECK_EQ(ab1_data, ab2_data); CHECK_EQ(2, GetRetainersCount(snapshot, ab1_data)); free(data); } TEST(BoxObject) { v8::Isolate* isolate = CcTest::isolate(); v8::HandleScope scope(isolate); LocalContext env; v8::Handle global_proxy = env->Global(); v8::Handle global = global_proxy->GetPrototype().As(); i::Factory* factory = CcTest::i_isolate()->factory(); i::Handle string = factory->NewStringFromStaticAscii("string"); i::Handle box = factory->NewBox(string); global->Set(0, v8::ToApiHandle(box)); v8::HeapProfiler* heap_profiler = isolate->GetHeapProfiler(); const v8::HeapSnapshot* snapshot = heap_profiler->TakeHeapSnapshot(v8_str("snapshot")); CHECK(ValidateSnapshot(snapshot)); const v8::HeapGraphNode* global_node = GetGlobalObject(snapshot); const v8::HeapGraphNode* box_node = GetProperty(global_node, v8::HeapGraphEdge::kElement, "0"); CHECK_NE(NULL, box_node); v8::String::Utf8Value box_node_name(box_node->GetName()); CHECK_EQ("system / Box", *box_node_name); const v8::HeapGraphNode* box_value = GetProperty(box_node, v8::HeapGraphEdge::kInternal, "value"); CHECK_NE(NULL, box_value); } TEST(WeakContainers) { i::FLAG_allow_natives_syntax = true; LocalContext env; v8::HandleScope scope(env->GetIsolate()); if (!CcTest::i_isolate()->use_crankshaft()) return; v8::HeapProfiler* heap_profiler = env->GetIsolate()->GetHeapProfiler(); CompileRun( "function foo(a) { return a.x; }\n" "obj = {x : 123};\n" "foo(obj);\n" "foo(obj);\n" "%OptimizeFunctionOnNextCall(foo);\n" "foo(obj);\n"); const v8::HeapSnapshot* snapshot = heap_profiler->TakeHeapSnapshot(v8_str("snapshot")); CHECK(ValidateSnapshot(snapshot)); const v8::HeapGraphNode* global = GetGlobalObject(snapshot); const v8::HeapGraphNode* obj = GetProperty(global, v8::HeapGraphEdge::kProperty, "obj"); CHECK_NE(NULL, obj); const v8::HeapGraphNode* map = GetProperty(obj, v8::HeapGraphEdge::kInternal, "map"); CHECK_NE(NULL, map); const v8::HeapGraphNode* dependent_code = GetProperty(map, v8::HeapGraphEdge::kInternal, "dependent_code"); if (!dependent_code) return; int count = dependent_code->GetChildrenCount(); CHECK_NE(0, count); for (int i = 0; i < count; ++i) { const v8::HeapGraphEdge* prop = dependent_code->GetChild(i); CHECK_EQ(v8::HeapGraphEdge::kWeak, prop->GetType()); } } static inline i::Address ToAddress(int n) { return reinterpret_cast(n); } TEST(AddressToTraceMap) { i::AddressToTraceMap map; CHECK_EQ(0, map.GetTraceNodeId(ToAddress(150))); // [0x100, 0x200) -> 1 map.AddRange(ToAddress(0x100), 0x100, 1U); CHECK_EQ(0, map.GetTraceNodeId(ToAddress(0x50))); CHECK_EQ(1, map.GetTraceNodeId(ToAddress(0x100))); CHECK_EQ(1, map.GetTraceNodeId(ToAddress(0x150))); CHECK_EQ(0, map.GetTraceNodeId(ToAddress(0x100 + 0x100))); CHECK_EQ(1, static_cast(map.size())); // [0x100, 0x200) -> 1, [0x200, 0x300) -> 2 map.AddRange(ToAddress(0x200), 0x100, 2U); CHECK_EQ(2, map.GetTraceNodeId(ToAddress(0x2a0))); CHECK_EQ(2, static_cast(map.size())); // [0x100, 0x180) -> 1, [0x180, 0x280) -> 3, [0x280, 0x300) -> 2 map.AddRange(ToAddress(0x180), 0x100, 3U); CHECK_EQ(1, map.GetTraceNodeId(ToAddress(0x17F))); CHECK_EQ(2, map.GetTraceNodeId(ToAddress(0x280))); CHECK_EQ(3, map.GetTraceNodeId(ToAddress(0x180))); CHECK_EQ(3, static_cast(map.size())); // [0x100, 0x180) -> 1, [0x180, 0x280) -> 3, [0x280, 0x300) -> 2, // [0x400, 0x500) -> 4 map.AddRange(ToAddress(0x400), 0x100, 4U); CHECK_EQ(1, map.GetTraceNodeId(ToAddress(0x17F))); CHECK_EQ(2, map.GetTraceNodeId(ToAddress(0x280))); CHECK_EQ(3, map.GetTraceNodeId(ToAddress(0x180))); CHECK_EQ(4, map.GetTraceNodeId(ToAddress(0x450))); CHECK_EQ(0, map.GetTraceNodeId(ToAddress(0x500))); CHECK_EQ(0, map.GetTraceNodeId(ToAddress(0x350))); CHECK_EQ(4, static_cast(map.size())); // [0x100, 0x180) -> 1, [0x180, 0x200) -> 3, [0x200, 0x600) -> 5 map.AddRange(ToAddress(0x200), 0x400, 5U); CHECK_EQ(5, map.GetTraceNodeId(ToAddress(0x200))); CHECK_EQ(5, map.GetTraceNodeId(ToAddress(0x400))); CHECK_EQ(3, static_cast(map.size())); // [0x100, 0x180) -> 1, [0x180, 0x200) -> 7, [0x200, 0x600) ->5 map.AddRange(ToAddress(0x180), 0x80, 6U); map.AddRange(ToAddress(0x180), 0x80, 7U); CHECK_EQ(7, map.GetTraceNodeId(ToAddress(0x180))); CHECK_EQ(5, map.GetTraceNodeId(ToAddress(0x200))); CHECK_EQ(3, static_cast(map.size())); map.Clear(); CHECK_EQ(0, static_cast(map.size())); CHECK_EQ(0, map.GetTraceNodeId(ToAddress(0x400))); }