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Edit File: test-heap-profiler.cc
// Copyright 2011 the V8 project authors. All rights reserved. // // Tests for heap profiler #include <ctype.h> #include "v8.h" #include "cctest.h" #include "hashmap.h" #include "heap-profiler.h" #include "snapshot.h" #include "debug.h" #include "utils-inl.h" #include "../include/v8-profiler.h" 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<i::HeapEntry*> list(10); list.Add(root); CheckEntry(root); while (!list.is_empty()) { i::HeapEntry* entry = list.RemoveLast(); i::Vector<i::HeapGraphEdge*> 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<void*>(child), static_cast<uint32_t>(reinterpret_cast<uintptr_t>(child)), true); if (entry->value) continue; entry->value = reinterpret_cast<void*>(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()); const v8::HeapGraphNode* global_obj = snapshot->GetRoot()->GetChild(0)->GetToNode(); CHECK_EQ(0, strncmp("Object", const_cast<i::HeapEntry*>( reinterpret_cast<const i::HeapEntry*>(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::AsciiValue 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::AsciiValue node_name(node->GetName()); if (strcmp(contents, *node_name) == 0) return true; } } return false; } TEST(HeapSnapshot) { v8::HandleScope scope; LocalContext env2; 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 = v8::HeapProfiler::TakeSnapshot(v8_str("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<i::HeapEntry*>( reinterpret_cast<const i::HeapEntry*>(global_env2))); CHECK(det.has_A2); CHECK(det.has_B2); CHECK(det.has_C2); } TEST(HeapSnapshotObjectSizes) { v8::HandleScope scope; LocalContext env; // -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 = v8::HeapProfiler::TakeSnapshot(v8_str("sizes")); 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, x->GetSelfSize()); CHECK_NE(0, x1->GetSelfSize()); CHECK_NE(0, x2->GetSelfSize()); } TEST(BoundFunctionInSnapshot) { v8::HandleScope scope; LocalContext env; 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 = v8::HeapProfiler::TakeSnapshot(v8_str("sizes")); const v8::HeapGraphNode* global = GetGlobalObject(snapshot); const v8::HeapGraphNode* f = GetProperty(global, v8::HeapGraphEdge::kProperty, "boundFunction"); CHECK(f); CHECK_EQ(v8::String::New("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) { v8::HandleScope scope; LocalContext env; CompileRun( "function A() { }\n" "a = new A;"); const v8::HeapSnapshot* snapshot = v8::HeapProfiler::TakeSnapshot(v8_str("children")); 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) { v8::HandleScope scope; LocalContext env; 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 = v8::HeapProfiler::TakeSnapshot(v8_str("code")); 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::AsciiValue 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); // 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) { v8::HandleScope scope; LocalContext env; CompileRun( "a = 1; // a is Smi\n" "b = 2.5; // b is HeapNumber"); const v8::HeapSnapshot* snapshot = v8::HeapProfiler::TakeSnapshot(v8_str("numbers")); 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) { v8::HandleScope scope; LocalContext env; 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 = v8::HeapProfiler::TakeSnapshot(v8_str("strings")); 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); const v8::HeapGraphNode* parent = GetProperty(child_string, v8::HeapGraphEdge::kInternal, "parent"); CHECK_EQ(parent_string, parent); } TEST(HeapSnapshotInternalReferences) { v8::HandleScope scope; v8::Local<v8::ObjectTemplate> global_template = v8::ObjectTemplate::New(); global_template->SetInternalFieldCount(2); LocalContext env(NULL, global_template); v8::Handle<v8::Object> global_proxy = env->Global(); v8::Handle<v8::Object> global = global_proxy->GetPrototype().As<v8::Object>(); CHECK_EQ(2, global->InternalFieldCount()); v8::Local<v8::Object> obj = v8::Object::New(); global->SetInternalField(0, v8_num(17)); global->SetInternalField(1, obj); const v8::HeapSnapshot* snapshot = v8::HeapProfiler::TakeSnapshot(v8_str("internals")); 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<int32_t>(a), static_cast<int32_t>(b)) #define CHECK_NE_SNAPSHOT_OBJECT_ID(a, b) \ CHECK((a) != (b)) // NOLINT TEST(HeapEntryIdsAndArrayShift) { v8::HandleScope scope; LocalContext env; 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 = v8::HeapProfiler::TakeSnapshot(v8_str("s1")); CompileRun( "for (var i = 0; i < 1; ++i)\n" " a.shift();\n"); HEAP->CollectAllGarbage(i::Heap::kNoGCFlags); const v8::HeapSnapshot* snapshot2 = v8::HeapProfiler::TakeSnapshot(v8_str("s2")); 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) { v8::HandleScope scope; LocalContext env; CompileRun( "function A() {}\n" "function B(x) { this.x = x; }\n" "var a = new A();\n" "var b = new B(a);"); v8::Local<v8::String> s1_str = v8_str("s1"); v8::Local<v8::String> s2_str = v8_str("s2"); const v8::HeapSnapshot* snapshot1 = v8::HeapProfiler::TakeSnapshot(s1_str); HEAP->CollectAllGarbage(i::Heap::kNoGCFlags); const v8::HeapSnapshot* snapshot2 = v8::HeapProfiler::TakeSnapshot(s2_str); 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) { v8::HandleScope scope; LocalContext env; const v8::HeapSnapshot* snapshot = v8::HeapProfiler::TakeSnapshot(v8_str("s")); const v8::HeapGraphNode* root1 = snapshot->GetRoot(); const_cast<i::HeapSnapshot*>(reinterpret_cast<const i::HeapSnapshot*>( 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<char> chunk = buffer_.AddBlock(chars_written, '\0'); memcpy(chunk.start(), buffer, chars_written); return kContinue; } virtual WriteResult WriteUint32Chunk(uint32_t* buffer, int chars_written) { ASSERT(false); return kAbort; } void WriteTo(i::Vector<char> dest) { buffer_.WriteTo(dest); } int eos_signaled() { return eos_signaled_; } int size() { return buffer_.size(); } private: i::Collector<char> buffer_; int eos_signaled_; int abort_countdown_; }; class AsciiResource: public v8::String::ExternalAsciiStringResource { public: explicit AsciiResource(i::Vector<char> 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) { v8::HandleScope scope; LocalContext env; #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 = v8::HeapProfiler::TakeSnapshot(v8_str("json")); TestJSONStream stream; snapshot->Serialize(&stream, v8::HeapSnapshot::kJSON); CHECK_GT(stream.size(), 0); CHECK_EQ(1, stream.eos_signaled()); i::ScopedVector<char> json(stream.size()); stream.WriteTo(json); // Verify that snapshot string is valid JSON. AsciiResource json_res(json); v8::Local<v8::String> json_string = v8::String::NewExternal(&json_res); env->Global()->Set(v8_str("json_snapshot"), json_string); v8::Local<v8::Value> 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<v8::Object> 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<v8::Value> meta_analysis_result = CompileRun( "var meta = parsed.snapshot.meta;\n" "var edges_index_offset = meta.node_fields.indexOf('edges_index');\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" "parsed.nodes.concat(0, 0, 0, 0, 0, 0, parsed.edges.length);"); 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" " for (var i = nodes[pos + edges_index_offset],\n" " count = nodes[pos + node_fields_count + edges_index_offset];\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: <root> -> <global>.b.x.s v8::Local<v8::Value> string_obj_pos_val = CompileRun( "GetChildPosByProperty(\n" " GetChildPosByProperty(\n" " GetChildPosByProperty(" " parsed.edges[parsed.nodes[edges_index_offset]" " + 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<int>(string_obj_pos_val->ToNumber()->Value()); v8::Local<v8::Object> nodes_array = parsed_snapshot->Get(v8_str("nodes"))->ToObject(); int string_index = static_cast<int>( nodes_array->Get(string_obj_pos + 1)->ToNumber()->Value()); CHECK_GT(string_index, 0); v8::Local<v8::Object> strings_array = parsed_snapshot->Get(v8_str("strings"))->ToObject(); v8::Local<v8::String> string = strings_array->Get(string_index)->ToString(); v8::Local<v8::String> 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) { v8::HandleScope scope; LocalContext env; const v8::HeapSnapshot* snapshot = v8::HeapProfiler::TakeSnapshot(v8_str("abort")); 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) { ASSERT(false); return kAbort; } virtual WriteResult WriteHeapStatsChunk(v8::HeapStatsUpdate* buffer, int updates_written) { ++intervals_count_; ASSERT(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() { TestStatsStream stream; v8::HeapProfiler::PushHeapObjectsStats(&stream); CHECK_EQ(1, stream.eos_signaled()); return stream; } TEST(HeapSnapshotObjectsStats) { v8::HandleScope scope; LocalContext env; v8::HeapProfiler::StartHeapObjectsTracking(); // We have to call GC 5 times. In other case the garbage will be // the reason of flakiness. for (int i = 0; i < 5; ++i) { HEAP->CollectAllGarbage(i::Heap::kNoGCFlags); } { // Single chunk of data expected in update. Initial data. TestStatsStream stats_update = GetHeapStatsUpdate(); 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. CHECK_EQ(0, GetHeapStatsUpdate().updates_written()); { v8::HandleScope inner_scope_1; v8_str("string1"); { // Single chunk of data with one new entry expected in update. TestStatsStream stats_update = GetHeapStatsUpdate(); 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. CHECK_EQ(0, GetHeapStatsUpdate().updates_written()); { v8::HandleScope inner_scope_2; v8_str("string2"); uint32_t entries_size; { v8::HandleScope inner_scope_3; v8_str("string3"); v8_str("string4"); { // Single chunk of data with three new entries expected in update. TestStatsStream stats_update = GetHeapStatsUpdate(); 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(); 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(); 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(); 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<v8::Array> array = v8::Array::New(); 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(); 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(); 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()); } v8::HeapProfiler::StopHeapObjectsTracking(); } 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) { v8::HandleScope scope; LocalContext env; const v8::HeapSnapshot* snapshot = v8::HeapProfiler::TakeSnapshot(v8_str("id")); 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) { v8::HandleScope scope; LocalContext env; CompileRun("globalObject = {};\n"); const v8::HeapSnapshot* snapshot = v8::HeapProfiler::TakeSnapshot(v8_str("get_snapshot_object_id")); const v8::HeapGraphNode* global = GetGlobalObject(snapshot); const v8::HeapGraphNode* global_object = GetProperty(global, v8::HeapGraphEdge::kProperty, "globalObject"); CHECK(global_object); v8::Local<v8::Value> globalObjectHandle = env->Global()->Get(v8::String::New("globalObject")); CHECK(!globalObjectHandle.IsEmpty()); CHECK(globalObjectHandle->IsObject()); v8::SnapshotObjectId id = v8::HeapProfiler::GetSnapshotObjectId(globalObjectHandle); CHECK_NE(static_cast<int>(v8::HeapProfiler::kUnknownObjectId), id); CHECK_EQ(static_cast<int>(id), global_object->GetId()); } TEST(HeapSnapshotUnknownSnapshotObjectId) { v8::HandleScope scope; LocalContext env; CompileRun("globalObject = {};\n"); const v8::HeapSnapshot* snapshot = v8::HeapProfiler::TakeSnapshot(v8_str("unknown_object_id")); 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) { v8::HandleScope scope; LocalContext env; const int snapshots_count = v8::HeapProfiler::GetSnapshotsCount(); TestActivityControl aborting_control(1); const v8::HeapSnapshot* no_snapshot = v8::HeapProfiler::TakeSnapshot(v8_str("abort"), v8::HeapSnapshot::kFull, &aborting_control); CHECK_EQ(NULL, no_snapshot); CHECK_EQ(snapshots_count, v8::HeapProfiler::GetSnapshotsCount()); CHECK_GT(aborting_control.total(), aborting_control.done()); TestActivityControl control(-1); // Don't abort. const v8::HeapSnapshot* snapshot = v8::HeapProfiler::TakeSnapshot(v8_str("full"), v8::HeapSnapshot::kFull, &control); CHECK_NE(NULL, snapshot); CHECK_EQ(snapshots_count + 1, v8::HeapProfiler::GetSnapshotsCount()); 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<v8::Value> wrapper) { if (class_id == 1) { if (wrapper->IsString()) { v8::String::AsciiValue ascii(wrapper); if (strcmp(*ascii, "AAA") == 0) return new TestRetainedObjectInfo(1, "aaa-group", "aaa", 100); else if (strcmp(*ascii, "BBB") == 0) return new TestRetainedObjectInfo(1, "aaa-group", "aaa", 100); } } else if (class_id == 2) { if (wrapper->IsString()) { v8::String::AsciiValue ascii(wrapper); if (strcmp(*ascii, "CCC") == 0) return new TestRetainedObjectInfo(2, "ccc-group", "ccc"); } } CHECK(false); return NULL; } static i::List<TestRetainedObjectInfo*> instances; private: bool disposed_; int category_; int hash_; const char* group_label_; const char* label_; intptr_t element_count_; intptr_t size_; }; i::List<TestRetainedObjectInfo*> 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<i::HeapEntry*>( reinterpret_cast<const i::HeapEntry*>(node))->name()) == 0) { return node; } } return NULL; } TEST(HeapSnapshotRetainedObjectInfo) { v8::HandleScope scope; LocalContext env; v8::HeapProfiler::DefineWrapperClass( 1, TestRetainedObjectInfo::WrapperInfoCallback); v8::HeapProfiler::DefineWrapperClass( 2, TestRetainedObjectInfo::WrapperInfoCallback); v8::Persistent<v8::String> p_AAA = v8::Persistent<v8::String>::New(v8_str("AAA")); p_AAA.SetWrapperClassId(1); v8::Persistent<v8::String> p_BBB = v8::Persistent<v8::String>::New(v8_str("BBB")); p_BBB.SetWrapperClassId(1); v8::Persistent<v8::String> p_CCC = v8::Persistent<v8::String>::New(v8_str("CCC")); p_CCC.SetWrapperClassId(2); CHECK_EQ(0, TestRetainedObjectInfo::instances.length()); const v8::HeapSnapshot* snapshot = v8::HeapProfiler::TakeSnapshot(v8_str("retained")); 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; for (int i = 0; i < kObjectsCount; i++) { objects_[i] = v8::Persistent<v8::Object>::New(v8::Object::New()); } (*env)->Global()->Set(v8_str("root_object"), objects_[0]); } ~GraphWithImplicitRefs() { instance_ = NULL; } static void gcPrologue() { instance_->AddImplicitReferences(); } private: void AddImplicitReferences() { // 0 -> 1 v8::V8::AddImplicitReferences( v8::Persistent<v8::Object>::Cast(objects_[0]), &objects_[1], 1); // Adding two more references(note length=2 in params): 1 -> 2, 1 -> 3 v8::V8::AddImplicitReferences( v8::Persistent<v8::Object>::Cast(objects_[1]), &objects_[2], 2); } v8::Persistent<v8::Value> objects_[kObjectsCount]; static GraphWithImplicitRefs* instance_; }; GraphWithImplicitRefs* GraphWithImplicitRefs::instance_ = NULL; TEST(HeapSnapshotImplicitReferences) { v8::HandleScope scope; LocalContext env; GraphWithImplicitRefs graph(&env); v8::V8::SetGlobalGCPrologueCallback(&GraphWithImplicitRefs::gcPrologue); const v8::HeapSnapshot* snapshot = v8::HeapProfiler::TakeSnapshot(v8_str("implicit_refs")); 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::AsciiValue 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::SetGlobalGCPrologueCallback(NULL); } TEST(DeleteAllHeapSnapshots) { v8::HandleScope scope; LocalContext env; CHECK_EQ(0, v8::HeapProfiler::GetSnapshotsCount()); v8::HeapProfiler::DeleteAllSnapshots(); CHECK_EQ(0, v8::HeapProfiler::GetSnapshotsCount()); CHECK_NE(NULL, v8::HeapProfiler::TakeSnapshot(v8_str("1"))); CHECK_EQ(1, v8::HeapProfiler::GetSnapshotsCount()); v8::HeapProfiler::DeleteAllSnapshots(); CHECK_EQ(0, v8::HeapProfiler::GetSnapshotsCount()); CHECK_NE(NULL, v8::HeapProfiler::TakeSnapshot(v8_str("1"))); CHECK_NE(NULL, v8::HeapProfiler::TakeSnapshot(v8_str("2"))); CHECK_EQ(2, v8::HeapProfiler::GetSnapshotsCount()); v8::HeapProfiler::DeleteAllSnapshots(); CHECK_EQ(0, v8::HeapProfiler::GetSnapshotsCount()); } TEST(DeleteHeapSnapshot) { v8::HandleScope scope; LocalContext env; CHECK_EQ(0, v8::HeapProfiler::GetSnapshotsCount()); const v8::HeapSnapshot* s1 = v8::HeapProfiler::TakeSnapshot(v8_str("1")); CHECK_NE(NULL, s1); CHECK_EQ(1, v8::HeapProfiler::GetSnapshotsCount()); unsigned uid1 = s1->GetUid(); CHECK_EQ(s1, v8::HeapProfiler::FindSnapshot(uid1)); const_cast<v8::HeapSnapshot*>(s1)->Delete(); CHECK_EQ(0, v8::HeapProfiler::GetSnapshotsCount()); CHECK_EQ(NULL, v8::HeapProfiler::FindSnapshot(uid1)); const v8::HeapSnapshot* s2 = v8::HeapProfiler::TakeSnapshot(v8_str("2")); CHECK_NE(NULL, s2); CHECK_EQ(1, v8::HeapProfiler::GetSnapshotsCount()); unsigned uid2 = s2->GetUid(); CHECK_NE(static_cast<int>(uid1), static_cast<int>(uid2)); CHECK_EQ(s2, v8::HeapProfiler::FindSnapshot(uid2)); const v8::HeapSnapshot* s3 = v8::HeapProfiler::TakeSnapshot(v8_str("3")); CHECK_NE(NULL, s3); CHECK_EQ(2, v8::HeapProfiler::GetSnapshotsCount()); unsigned uid3 = s3->GetUid(); CHECK_NE(static_cast<int>(uid1), static_cast<int>(uid3)); CHECK_EQ(s3, v8::HeapProfiler::FindSnapshot(uid3)); const_cast<v8::HeapSnapshot*>(s2)->Delete(); CHECK_EQ(1, v8::HeapProfiler::GetSnapshotsCount()); CHECK_EQ(NULL, v8::HeapProfiler::FindSnapshot(uid2)); CHECK_EQ(s3, v8::HeapProfiler::FindSnapshot(uid3)); const_cast<v8::HeapSnapshot*>(s3)->Delete(); CHECK_EQ(0, v8::HeapProfiler::GetSnapshotsCount()); CHECK_EQ(NULL, v8::HeapProfiler::FindSnapshot(uid3)); } TEST(DocumentURL) { v8::HandleScope scope; LocalContext env; CompileRun("document = { URL:\"abcdefgh\" };"); const v8::HeapSnapshot* snapshot = v8::HeapProfiler::TakeSnapshot(v8_str("document")); const v8::HeapGraphNode* global = GetGlobalObject(snapshot); CHECK_NE(NULL, global); CHECK_EQ("Object / abcdefgh", const_cast<i::HeapEntry*>( reinterpret_cast<const i::HeapEntry*>(global))->name()); } TEST(DocumentWithException) { v8::HandleScope scope; LocalContext env; CompileRun( "this.__defineGetter__(\"document\", function() { throw new Error(); })"); const v8::HeapSnapshot* snapshot = v8::HeapProfiler::TakeSnapshot(v8_str("document")); const v8::HeapGraphNode* global = GetGlobalObject(snapshot); CHECK_NE(NULL, global); CHECK_EQ("Object", const_cast<i::HeapEntry*>( reinterpret_cast<const i::HeapEntry*>(global))->name()); } TEST(DocumentURLWithException) { v8::HandleScope scope; LocalContext env; CompileRun( "function URLWithException() {}\n" "URLWithException.prototype = { get URL() { throw new Error(); } };\n" "document = { URL: new URLWithException() };"); const v8::HeapSnapshot* snapshot = v8::HeapProfiler::TakeSnapshot(v8_str("document")); const v8::HeapGraphNode* global = GetGlobalObject(snapshot); CHECK_NE(NULL, global); CHECK_EQ("Object", const_cast<i::HeapEntry*>( reinterpret_cast<const i::HeapEntry*>(global))->name()); } TEST(NoHandleLeaks) { v8::HandleScope scope; LocalContext env; CompileRun("document = { URL:\"abcdefgh\" };"); v8::Handle<v8::String> name(v8_str("leakz")); int count_before = i::HandleScope::NumberOfHandles(); v8::HeapProfiler::TakeSnapshot(name); int count_after = i::HandleScope::NumberOfHandles(); CHECK_EQ(count_before, count_after); } TEST(NodesIteration) { v8::HandleScope scope; LocalContext env; const v8::HeapSnapshot* snapshot = v8::HeapProfiler::TakeSnapshot(v8_str("iteration")); 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(GetHeapValue) { v8::HandleScope scope; LocalContext env; CompileRun("a = { s_prop: \'value\', n_prop: 0.1 };"); const v8::HeapSnapshot* snapshot = v8::HeapProfiler::TakeSnapshot(v8_str("value")); const v8::HeapGraphNode* global = GetGlobalObject(snapshot); CHECK(global->GetHeapValue()->IsObject()); v8::Local<v8::Object> js_global = env->Global()->GetPrototype().As<v8::Object>(); CHECK(js_global == global->GetHeapValue()); const v8::HeapGraphNode* obj = GetProperty( global, v8::HeapGraphEdge::kProperty, "a"); CHECK(obj->GetHeapValue()->IsObject()); v8::Local<v8::Object> js_obj = js_global->Get(v8_str("a")).As<v8::Object>(); CHECK(js_obj == obj->GetHeapValue()); const v8::HeapGraphNode* s_prop = GetProperty(obj, v8::HeapGraphEdge::kProperty, "s_prop"); v8::Local<v8::String> js_s_prop = js_obj->Get(v8_str("s_prop")).As<v8::String>(); CHECK(js_s_prop == s_prop->GetHeapValue()); const v8::HeapGraphNode* n_prop = GetProperty(obj, v8::HeapGraphEdge::kProperty, "n_prop"); v8::Local<v8::Number> js_n_prop = js_obj->Get(v8_str("n_prop")).As<v8::Number>(); CHECK(js_n_prop == n_prop->GetHeapValue()); } TEST(GetHeapValueForDeletedObject) { v8::HandleScope scope; LocalContext env; // 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 = v8::HeapProfiler::TakeSnapshot(v8_str("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; CHECK(prop->GetHeapValue()->IsObject()); } CompileRun("delete a.p;"); CHECK(prop->GetHeapValue()->IsUndefined()); } static int StringCmp(const char* ref, i::String* act) { i::SmartArrayPointer<char> s_act = act->ToCString(); int result = strcmp(ref, *s_act); if (result != 0) fprintf(stderr, "Expected: \"%s\", Actual: \"%s\"\n", ref, *s_act); return result; } TEST(GetConstructorName) { v8::HandleScope scope; LocalContext env; 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<v8::Object> js_global = env->Global()->GetPrototype().As<v8::Object>(); v8::Local<v8::Object> obj1 = js_global->Get(v8_str("obj1")).As<v8::Object>(); i::Handle<i::JSObject> js_obj1 = v8::Utils::OpenHandle(*obj1); CHECK_EQ(0, StringCmp( "Constructor1", i::V8HeapExplorer::GetConstructorName(*js_obj1))); v8::Local<v8::Object> obj2 = js_global->Get(v8_str("obj2")).As<v8::Object>(); i::Handle<i::JSObject> js_obj2 = v8::Utils::OpenHandle(*obj2); CHECK_EQ(0, StringCmp( "Constructor2", i::V8HeapExplorer::GetConstructorName(*js_obj2))); v8::Local<v8::Object> obj3 = js_global->Get(v8_str("obj3")).As<v8::Object>(); i::Handle<i::JSObject> js_obj3 = v8::Utils::OpenHandle(*obj3); CHECK_EQ(0, StringCmp( "Constructor3", i::V8HeapExplorer::GetConstructorName(*js_obj3))); v8::Local<v8::Object> obj4 = js_global->Get(v8_str("obj4")).As<v8::Object>(); i::Handle<i::JSObject> js_obj4 = v8::Utils::OpenHandle(*obj4); CHECK_EQ(0, StringCmp( "Constructor4", i::V8HeapExplorer::GetConstructorName(*js_obj4))); v8::Local<v8::Object> obj5 = js_global->Get(v8_str("obj5")).As<v8::Object>(); i::Handle<i::JSObject> js_obj5 = v8::Utils::OpenHandle(*obj5); CHECK_EQ(0, StringCmp( "Object", i::V8HeapExplorer::GetConstructorName(*js_obj5))); v8::Local<v8::Object> obj6 = js_global->Get(v8_str("obj6")).As<v8::Object>(); i::Handle<i::JSObject> js_obj6 = v8::Utils::OpenHandle(*obj6); CHECK_EQ(0, StringCmp( "Object", i::V8HeapExplorer::GetConstructorName(*js_obj6))); } TEST(FastCaseGetter) { v8::HandleScope scope; LocalContext env; 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 = v8::HeapProfiler::TakeSnapshot(v8_str("fastCaseGetter")); 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* getterFunction = GetProperty(obj1, v8::HeapGraphEdge::kProperty, "get-propWithGetter"); CHECK_NE(NULL, getterFunction); const v8::HeapGraphNode* setterFunction = GetProperty(obj1, v8::HeapGraphEdge::kProperty, "set-propWithSetter"); CHECK_NE(NULL, setterFunction); } 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() { const v8::HeapSnapshot* snapshot = v8::HeapProfiler::TakeSnapshot(v8_str("weaks")); const v8::HeapGraphNode* gc_roots = GetNode( snapshot->GetRoot(), v8::HeapGraphNode::kObject, "(GC roots)"); CHECK_NE(NULL, gc_roots); const v8::HeapGraphNode* global_handles = GetNode( gc_roots, v8::HeapGraphNode::kObject, "(Global handles)"); CHECK_NE(NULL, global_handles); return HasWeakEdge(global_handles); } static void PersistentHandleCallback(v8::Persistent<v8::Value> handle, void*) { handle.Dispose(); } TEST(WeakGlobalHandle) { v8::HandleScope scope; LocalContext env; CHECK(!HasWeakGlobalHandle()); v8::Persistent<v8::Object> handle = v8::Persistent<v8::Object>::New(v8::Object::New()); handle.MakeWeak(NULL, PersistentHandleCallback); CHECK(HasWeakGlobalHandle()); } TEST(WeakGlobalContextRefs) { v8::HandleScope scope; LocalContext env; const v8::HeapSnapshot* snapshot = v8::HeapProfiler::TakeSnapshot(v8_str("weaks")); const v8::HeapGraphNode* gc_roots = GetNode( snapshot->GetRoot(), v8::HeapGraphNode::kObject, "(GC roots)"); CHECK_NE(NULL, gc_roots); const v8::HeapGraphNode* global_handles = GetNode( gc_roots, v8::HeapGraphNode::kObject, "(Global handles)"); CHECK_NE(NULL, global_handles); const v8::HeapGraphNode* global_context = GetNode( global_handles, v8::HeapGraphNode::kHidden, "system / GlobalContext"); CHECK_NE(NULL, global_context); CHECK(HasWeakEdge(global_context)); } TEST(SfiAndJsFunctionWeakRefs) { v8::HandleScope scope; LocalContext env; CompileRun( "fun = (function (x) { return function () { return x + 1; } })(1);"); const v8::HeapSnapshot* snapshot = v8::HeapProfiler::TakeSnapshot(v8_str("fun")); 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) { v8::HandleScope scope; LocalContext env; v8::internal::Isolate::Current()->debug()->Load(); CompileRun("foo = {};"); const v8::HeapSnapshot* snapshot = v8::HeapProfiler::TakeSnapshot(v8_str("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(PersistentHandleCount) { v8::HandleScope scope; LocalContext env; // V8 also uses global handles internally, so we can't test for an absolute // number. int global_handle_count = v8::HeapProfiler::GetPersistentHandleCount(); // Create some persistent handles. v8::Persistent<v8::String> p_AAA = v8::Persistent<v8::String>::New(v8_str("AAA")); CHECK_EQ(global_handle_count + 1, v8::HeapProfiler::GetPersistentHandleCount()); v8::Persistent<v8::String> p_BBB = v8::Persistent<v8::String>::New(v8_str("BBB")); CHECK_EQ(global_handle_count + 2, v8::HeapProfiler::GetPersistentHandleCount()); v8::Persistent<v8::String> p_CCC = v8::Persistent<v8::String>::New(v8_str("CCC")); CHECK_EQ(global_handle_count + 3, v8::HeapProfiler::GetPersistentHandleCount()); // Dipose the persistent handles in a different order. p_AAA.Dispose(); CHECK_EQ(global_handle_count + 2, v8::HeapProfiler::GetPersistentHandleCount()); p_CCC.Dispose(); CHECK_EQ(global_handle_count + 1, v8::HeapProfiler::GetPersistentHandleCount()); p_BBB.Dispose(); CHECK_EQ(global_handle_count, v8::HeapProfiler::GetPersistentHandleCount()); } TEST(AllStrongGcRootsHaveNames) { v8::HandleScope scope; LocalContext env; CompileRun("foo = {};"); const v8::HeapSnapshot* snapshot = v8::HeapProfiler::TakeSnapshot(v8_str("snapshot")); const v8::HeapGraphNode* gc_roots = GetNode( snapshot->GetRoot(), v8::HeapGraphNode::kObject, "(GC roots)"); CHECK_NE(NULL, gc_roots); const v8::HeapGraphNode* strong_roots = GetNode( gc_roots, v8::HeapGraphNode::kObject, "(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::AsciiValue name(edge->GetName()); CHECK(isalpha(**name)); } } TEST(NoRefsToNonEssentialEntries) { v8::HandleScope scope; LocalContext env; CompileRun("global_object = {};\n"); const v8::HeapSnapshot* snapshot = v8::HeapProfiler::TakeSnapshot(v8_str("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); }