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DevTools: Drop kSinTable dependency off the heap profiler ArrayBuffer backing_store test

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LOG=N
R=dslomov@chromium.org, yurys@chromium.org

Review URL: https://codereview.chromium.org/170253008

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@19458 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
This commit is contained in:
alph@chromium.org 2014-02-18 15:57:44 +00:00
parent 5224c3d0f0
commit b4354d6d88
1 changed files with 38 additions and 22 deletions
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60
test/cctest/test-heap-profiler.cc
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@ -2406,31 +2406,47 @@ static int GetRetainersCount(const v8::HeapSnapshot* snapshot,
TEST(ArrayBufferSharedBackingStore) {
LocalContext env;
v8::HandleScope scope(env->GetIsolate());
v8::HeapProfiler* heap_profiler = env->GetIsolate()->GetHeapProfiler();
CompileRun("sin1 = Math.sin(1);");
LocalContext env2;
CompileRun("sin2 = Math.sin(2);");
v8::Isolate* isolate = env->GetIsolate();
v8::HandleScope handle_scope(isolate);
v8::HeapProfiler* heap_profiler = isolate->GetHeapProfiler();
v8::Local<v8::ArrayBuffer> ab = v8::ArrayBuffer::New(isolate, 1024);
CHECK_EQ(1024, static_cast<int>(ab->ByteLength()));
CHECK(!ab->IsExternal());
v8::ArrayBuffer::Contents ab_contents = ab->Externalize();
CHECK(ab->IsExternal());
CHECK_EQ(1024, static_cast<int>(ab_contents.ByteLength()));
void* data = ab_contents.Data();
ASSERT(data != NULL);
v8::Local<v8::ArrayBuffer> ab2 =
v8::ArrayBuffer::New(isolate, data, ab_contents.ByteLength());
CHECK(ab2->IsExternal());
env->Global()->Set(v8_str("ab1"), ab);
env->Global()->Set(v8_str("ab2"), ab2);
v8::Handle<v8::Value> result = CompileRun("ab2.byteLength");
CHECK_EQ(1024, result->Int32Value());
const v8::HeapSnapshot* snapshot =
heap_profiler->TakeHeapSnapshot(v8_str("snapshot"));
CHECK(ValidateSnapshot(snapshot));
// The 0th-child is (GC Roots), 1st is the user root.
const v8::HeapGraphNode* global =
snapshot->GetRoot()->GetChild(1)->GetToNode();
const v8::HeapGraphNode* builtins =
GetProperty(global, v8::HeapGraphEdge::kInternal, "builtins");
CHECK_NE(NULL, builtins);
const v8::HeapGraphNode* sin_table =
GetProperty(builtins, v8::HeapGraphEdge::kProperty, "kSinTable");
CHECK_NE(NULL, sin_table);
const v8::HeapGraphNode* buffer =
GetProperty(sin_table, v8::HeapGraphEdge::kInternal, "buffer");
CHECK_NE(NULL, buffer);
const v8::HeapGraphNode* backing_store =
GetProperty(buffer, v8::HeapGraphEdge::kInternal, "backing_store");
CHECK_NE(NULL, backing_store);
int retainers = GetRetainersCount(snapshot, backing_store);
CHECK_EQ(2, retainers);
const v8::HeapGraphNode* global = GetGlobalObject(snapshot);
const v8::HeapGraphNode* ab1_node =
GetProperty(global, v8::HeapGraphEdge::kProperty, "ab1");
CHECK_NE(NULL, ab1_node);
const v8::HeapGraphNode* ab1_data =
GetProperty(ab1_node, v8::HeapGraphEdge::kInternal, "backing_store");
CHECK_NE(NULL, ab1_data);
const v8::HeapGraphNode* ab2_node =
GetProperty(global, v8::HeapGraphEdge::kProperty, "ab2");
CHECK_NE(NULL, ab2_node);
const v8::HeapGraphNode* ab2_data =
GetProperty(ab2_node, v8::HeapGraphEdge::kInternal, "backing_store");
CHECK_NE(NULL, ab2_data);
CHECK_EQ(ab1_data, ab2_data);
CHECK_EQ(2, GetRetainersCount(snapshot, ab1_data));
free(data);
}