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DEFINITIONS
This source file includes following definitions.
- has_C2
- CheckEntry
- AddressesMatch
- CheckAllReachables
- GetGlobalObject
- GetProperty
- HasString
- TEST
- TEST
- TEST
- TEST
- TEST
- TEST
- TEST
- TEST
- TEST
- TEST
- abort_countdown_
- abort_countdown_
- EndOfStream
- WriteAsciiChunk
- WriteUint32Chunk
- WriteTo
- eos_signaled
- size
- data
- length
- TEST
- TEST
- first_interval_index_
- first_interval_index_
- EndOfStream
- WriteAsciiChunk
- WriteHeapStatsChunk
- eos_signaled
- updates_written
- entries_count
- entries_size
- intervals_count
- first_interval_index
- GetHeapStatsUpdate
- TEST
- CheckChildrenIds
- TEST
- TEST
- TEST
- abort_count_
- ReportProgressValue
- done
- total
- TEST
- size_
- Dispose
- IsEquivalent
- GetHash
- GetGroupLabel
- GetLabel
- GetElementCount
- GetSizeInBytes
- disposed
- WrapperInfoCallback
- GetNode
- TEST
- gcPrologue
- AddImplicitReferences
- TEST
- TEST
- TEST
- TEST
- TEST
- TEST
- TEST
- TEST
- TEST
- TEST
- StringCmp
- TEST
- TEST
- TEST
- HasWeakEdge
- HasWeakGlobalHandle
- PersistentHandleCallback
- TEST
- TEST
- TEST
- TEST
- TEST
- TEST
- TEST
// 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 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");
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: <root> -> <global>.b.x.s
v8::Local<v8::Value> string_obj_pos_val = CompileRun(
"GetChildPosByProperty(\n"
" GetChildPosByProperty(\n"
" GetChildPosByProperty("
" parsed.edges[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(
v8::SnapshotObjectId* object_id = NULL) {
TestStatsStream stream;
v8::SnapshotObjectId last_seen_id =
v8::HeapProfiler::PushHeapObjectsStats(&stream);
if (object_id)
*object_id = last_seen_id;
CHECK_EQ(1, stream.eos_signaled());
return stream;
}
TEST(HeapSnapshotObjectsStats) {
v8::HandleScope scope;
LocalContext env;
v8::HeapProfiler::StartHeapObjectsTracking();
// 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) {
HEAP->CollectAllGarbage(i::Heap::kNoGCFlags);
}
v8::SnapshotObjectId initial_id;
{
// Single chunk of data expected in update. Initial data.
TestStatsStream stats_update = GetHeapStatsUpdate(&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(&same_id).updates_written());
CHECK_EQ_SNAPSHOT_OBJECT_ID(initial_id, same_id);
{
v8::SnapshotObjectId additional_string_id;
v8::HandleScope inner_scope_1;
v8_str("string1");
{
// Single chunk of data with one new entry expected in update.
TestStatsStream stats_update = GetHeapStatsUpdate(&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(&last_id).updates_written());
CHECK_EQ_SNAPSHOT_OBJECT_ID(additional_string_id, last_id);
{
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);
}
TEST(HiddenPropertiesFastCase) {
v8::HandleScope scope;
LocalContext env;
CompileRun(
"function C(x) { this.a = this; this.b = x; }\n"
"c = new C(2012);\n");
const v8::HeapSnapshot* snapshot =
v8::HeapProfiler::TakeSnapshot(v8_str("HiddenPropertiesFastCase1"));
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<v8::Value> cHandle = env->Global()->Get(v8::String::New("c"));
CHECK(!cHandle.IsEmpty() && cHandle->IsObject());
cHandle->ToObject()->GetIdentityHash();
snapshot = v8::HeapProfiler::TakeSnapshot(
v8_str("HiddenPropertiesFastCase2"));
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() {
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));
}
#ifdef ENABLE_DEBUGGER_SUPPORT
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);
}
#endif // ENABLE_DEBUGGER_SUPPORT
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);
}