e839a1ca58
This is intended for smoother migration to the new API in Chromium. Also, aggregated heap snapshots can be used for cheaply obtaining heap statistics, e.g. in tests. Review URL: http://codereview.chromium.org/3124024 git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5297 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
993 lines
34 KiB
C++
993 lines
34 KiB
C++
// Copyright 2009 the V8 project authors. All rights reserved.
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//
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// Tests for heap profiler
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#ifdef ENABLE_LOGGING_AND_PROFILING
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#include "v8.h"
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#include "heap-profiler.h"
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#include "snapshot.h"
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#include "string-stream.h"
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#include "cctest.h"
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#include "zone-inl.h"
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#include "../include/v8-profiler.h"
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namespace i = v8::internal;
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using i::ClustersCoarser;
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using i::JSObjectsCluster;
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using i::JSObjectsRetainerTree;
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using i::JSObjectsClusterTree;
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using i::RetainerHeapProfile;
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static void CompileAndRunScript(const char *src) {
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v8::Script::Compile(v8::String::New(src))->Run();
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}
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namespace {
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class ConstructorHeapProfileTestHelper : public i::ConstructorHeapProfile {
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public:
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ConstructorHeapProfileTestHelper()
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: i::ConstructorHeapProfile(),
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f_name_(i::Factory::NewStringFromAscii(i::CStrVector("F"))),
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f_count_(0) {
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}
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void Call(const JSObjectsCluster& cluster,
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const i::NumberAndSizeInfo& number_and_size) {
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if (f_name_->Equals(cluster.constructor())) {
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CHECK_EQ(f_count_, 0);
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f_count_ = number_and_size.number();
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CHECK_GT(f_count_, 0);
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}
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}
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int f_count() { return f_count_; }
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private:
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i::Handle<i::String> f_name_;
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int f_count_;
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};
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} // namespace
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TEST(ConstructorProfile) {
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v8::HandleScope scope;
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LocalContext env;
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CompileAndRunScript(
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"function F() {} // A constructor\n"
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"var f1 = new F();\n"
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"var f2 = new F();\n");
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ConstructorHeapProfileTestHelper cons_profile;
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i::AssertNoAllocation no_alloc;
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i::HeapIterator iterator;
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for (i::HeapObject* obj = iterator.next(); obj != NULL; obj = iterator.next())
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cons_profile.CollectStats(obj);
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CHECK_EQ(0, cons_profile.f_count());
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cons_profile.PrintStats();
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CHECK_EQ(2, cons_profile.f_count());
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}
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static JSObjectsCluster AddHeapObjectToTree(JSObjectsRetainerTree* tree,
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i::String* constructor,
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int instance,
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JSObjectsCluster* ref1 = NULL,
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JSObjectsCluster* ref2 = NULL,
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JSObjectsCluster* ref3 = NULL) {
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JSObjectsCluster o(constructor, reinterpret_cast<i::Object*>(instance));
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JSObjectsClusterTree* o_tree = new JSObjectsClusterTree();
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JSObjectsClusterTree::Locator o_loc;
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if (ref1 != NULL) o_tree->Insert(*ref1, &o_loc);
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if (ref2 != NULL) o_tree->Insert(*ref2, &o_loc);
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if (ref3 != NULL) o_tree->Insert(*ref3, &o_loc);
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JSObjectsRetainerTree::Locator loc;
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tree->Insert(o, &loc);
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loc.set_value(o_tree);
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return o;
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}
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static void AddSelfReferenceToTree(JSObjectsRetainerTree* tree,
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JSObjectsCluster* self_ref) {
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JSObjectsRetainerTree::Locator loc;
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CHECK(tree->Find(*self_ref, &loc));
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JSObjectsClusterTree::Locator o_loc;
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CHECK_NE(NULL, loc.value());
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loc.value()->Insert(*self_ref, &o_loc);
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}
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static inline void CheckEqualsHelper(const char* file, int line,
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const char* expected_source,
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const JSObjectsCluster& expected,
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const char* value_source,
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const JSObjectsCluster& value) {
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if (JSObjectsCluster::Compare(expected, value) != 0) {
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i::HeapStringAllocator allocator;
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i::StringStream stream(&allocator);
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stream.Add("# Expected: ");
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expected.DebugPrint(&stream);
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stream.Add("\n# Found: ");
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value.DebugPrint(&stream);
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V8_Fatal(file, line, "CHECK_EQ(%s, %s) failed\n%s",
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expected_source, value_source,
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*stream.ToCString());
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}
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}
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static inline void CheckNonEqualsHelper(const char* file, int line,
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const char* expected_source,
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const JSObjectsCluster& expected,
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const char* value_source,
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const JSObjectsCluster& value) {
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if (JSObjectsCluster::Compare(expected, value) == 0) {
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i::HeapStringAllocator allocator;
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i::StringStream stream(&allocator);
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stream.Add("# !Expected: ");
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expected.DebugPrint(&stream);
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stream.Add("\n# Found: ");
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value.DebugPrint(&stream);
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V8_Fatal(file, line, "CHECK_NE(%s, %s) failed\n%s",
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expected_source, value_source,
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*stream.ToCString());
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}
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}
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TEST(ClustersCoarserSimple) {
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v8::HandleScope scope;
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LocalContext env;
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i::ZoneScope zn_scope(i::DELETE_ON_EXIT);
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JSObjectsRetainerTree tree;
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JSObjectsCluster function(i::Heap::function_class_symbol());
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JSObjectsCluster a(*i::Factory::NewStringFromAscii(i::CStrVector("A")));
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JSObjectsCluster b(*i::Factory::NewStringFromAscii(i::CStrVector("B")));
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// o1 <- Function
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JSObjectsCluster o1 =
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AddHeapObjectToTree(&tree, i::Heap::Object_symbol(), 0x100, &function);
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// o2 <- Function
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JSObjectsCluster o2 =
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AddHeapObjectToTree(&tree, i::Heap::Object_symbol(), 0x200, &function);
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// o3 <- A, B
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JSObjectsCluster o3 =
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AddHeapObjectToTree(&tree, i::Heap::Object_symbol(), 0x300, &a, &b);
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// o4 <- B, A
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JSObjectsCluster o4 =
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AddHeapObjectToTree(&tree, i::Heap::Object_symbol(), 0x400, &b, &a);
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// o5 <- A, B, Function
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JSObjectsCluster o5 =
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AddHeapObjectToTree(&tree, i::Heap::Object_symbol(), 0x500,
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&a, &b, &function);
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ClustersCoarser coarser;
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coarser.Process(&tree);
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CHECK_EQ(coarser.GetCoarseEquivalent(o1), coarser.GetCoarseEquivalent(o2));
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CHECK_EQ(coarser.GetCoarseEquivalent(o3), coarser.GetCoarseEquivalent(o4));
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CHECK_NE(coarser.GetCoarseEquivalent(o1), coarser.GetCoarseEquivalent(o3));
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CHECK_EQ(JSObjectsCluster(), coarser.GetCoarseEquivalent(o5));
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}
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TEST(ClustersCoarserMultipleConstructors) {
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v8::HandleScope scope;
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LocalContext env;
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i::ZoneScope zn_scope(i::DELETE_ON_EXIT);
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JSObjectsRetainerTree tree;
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JSObjectsCluster function(i::Heap::function_class_symbol());
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// o1 <- Function
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JSObjectsCluster o1 =
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AddHeapObjectToTree(&tree, i::Heap::Object_symbol(), 0x100, &function);
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// a1 <- Function
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JSObjectsCluster a1 =
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AddHeapObjectToTree(&tree, i::Heap::Array_symbol(), 0x1000, &function);
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// o2 <- Function
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JSObjectsCluster o2 =
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AddHeapObjectToTree(&tree, i::Heap::Object_symbol(), 0x200, &function);
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// a2 <- Function
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JSObjectsCluster a2 =
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AddHeapObjectToTree(&tree, i::Heap::Array_symbol(), 0x2000, &function);
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ClustersCoarser coarser;
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coarser.Process(&tree);
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CHECK_EQ(coarser.GetCoarseEquivalent(o1), coarser.GetCoarseEquivalent(o2));
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CHECK_EQ(coarser.GetCoarseEquivalent(a1), coarser.GetCoarseEquivalent(a2));
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}
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TEST(ClustersCoarserPathsTraversal) {
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v8::HandleScope scope;
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LocalContext env;
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i::ZoneScope zn_scope(i::DELETE_ON_EXIT);
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JSObjectsRetainerTree tree;
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// On the following graph:
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//
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// p
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// <- o21 <- o11 <-
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// q o
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// <- o22 <- o12 <-
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// r
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//
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// we expect that coarser will deduce equivalences: p ~ q ~ r,
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// o21 ~ o22, and o11 ~ o12.
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JSObjectsCluster o =
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AddHeapObjectToTree(&tree, i::Heap::Object_symbol(), 0x100);
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JSObjectsCluster o11 =
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AddHeapObjectToTree(&tree, i::Heap::Object_symbol(), 0x110, &o);
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JSObjectsCluster o12 =
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AddHeapObjectToTree(&tree, i::Heap::Object_symbol(), 0x120, &o);
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JSObjectsCluster o21 =
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AddHeapObjectToTree(&tree, i::Heap::Object_symbol(), 0x210, &o11);
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JSObjectsCluster o22 =
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AddHeapObjectToTree(&tree, i::Heap::Object_symbol(), 0x220, &o12);
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JSObjectsCluster p =
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AddHeapObjectToTree(&tree, i::Heap::Object_symbol(), 0x300, &o21);
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JSObjectsCluster q =
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AddHeapObjectToTree(&tree, i::Heap::Object_symbol(), 0x310, &o21, &o22);
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JSObjectsCluster r =
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AddHeapObjectToTree(&tree, i::Heap::Object_symbol(), 0x320, &o22);
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ClustersCoarser coarser;
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coarser.Process(&tree);
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CHECK_EQ(JSObjectsCluster(), coarser.GetCoarseEquivalent(o));
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CHECK_NE(JSObjectsCluster(), coarser.GetCoarseEquivalent(o11));
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CHECK_EQ(coarser.GetCoarseEquivalent(o11), coarser.GetCoarseEquivalent(o12));
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CHECK_EQ(coarser.GetCoarseEquivalent(o21), coarser.GetCoarseEquivalent(o22));
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CHECK_NE(coarser.GetCoarseEquivalent(o11), coarser.GetCoarseEquivalent(o21));
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CHECK_NE(JSObjectsCluster(), coarser.GetCoarseEquivalent(p));
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CHECK_EQ(coarser.GetCoarseEquivalent(p), coarser.GetCoarseEquivalent(q));
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CHECK_EQ(coarser.GetCoarseEquivalent(q), coarser.GetCoarseEquivalent(r));
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CHECK_NE(coarser.GetCoarseEquivalent(o11), coarser.GetCoarseEquivalent(p));
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CHECK_NE(coarser.GetCoarseEquivalent(o21), coarser.GetCoarseEquivalent(p));
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}
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TEST(ClustersCoarserSelf) {
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v8::HandleScope scope;
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LocalContext env;
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i::ZoneScope zn_scope(i::DELETE_ON_EXIT);
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JSObjectsRetainerTree tree;
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// On the following graph:
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//
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// p (self-referencing)
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// <- o1 <-
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// q (self-referencing) o
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// <- o2 <-
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// r (self-referencing)
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//
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// we expect that coarser will deduce equivalences: p ~ q ~ r, o1 ~ o2;
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JSObjectsCluster o =
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AddHeapObjectToTree(&tree, i::Heap::Object_symbol(), 0x100);
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JSObjectsCluster o1 =
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AddHeapObjectToTree(&tree, i::Heap::Object_symbol(), 0x110, &o);
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JSObjectsCluster o2 =
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AddHeapObjectToTree(&tree, i::Heap::Object_symbol(), 0x120, &o);
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JSObjectsCluster p =
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AddHeapObjectToTree(&tree, i::Heap::Object_symbol(), 0x300, &o1);
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AddSelfReferenceToTree(&tree, &p);
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JSObjectsCluster q =
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AddHeapObjectToTree(&tree, i::Heap::Object_symbol(), 0x310, &o1, &o2);
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AddSelfReferenceToTree(&tree, &q);
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JSObjectsCluster r =
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AddHeapObjectToTree(&tree, i::Heap::Object_symbol(), 0x320, &o2);
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AddSelfReferenceToTree(&tree, &r);
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ClustersCoarser coarser;
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coarser.Process(&tree);
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CHECK_EQ(JSObjectsCluster(), coarser.GetCoarseEquivalent(o));
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CHECK_NE(JSObjectsCluster(), coarser.GetCoarseEquivalent(o1));
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CHECK_EQ(coarser.GetCoarseEquivalent(o1), coarser.GetCoarseEquivalent(o2));
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CHECK_NE(JSObjectsCluster(), coarser.GetCoarseEquivalent(p));
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CHECK_EQ(coarser.GetCoarseEquivalent(p), coarser.GetCoarseEquivalent(q));
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CHECK_EQ(coarser.GetCoarseEquivalent(q), coarser.GetCoarseEquivalent(r));
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CHECK_NE(coarser.GetCoarseEquivalent(o1), coarser.GetCoarseEquivalent(p));
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}
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namespace {
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class RetainerProfilePrinter : public RetainerHeapProfile::Printer {
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public:
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RetainerProfilePrinter() : stream_(&allocator_), lines_(100) {}
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void PrintRetainers(const JSObjectsCluster& cluster,
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const i::StringStream& retainers) {
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cluster.Print(&stream_);
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stream_.Add("%s", *(retainers.ToCString()));
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stream_.Put('\0');
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}
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const char* GetRetainers(const char* constructor) {
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FillLines();
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const size_t cons_len = strlen(constructor);
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for (int i = 0; i < lines_.length(); ++i) {
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if (strncmp(constructor, lines_[i], cons_len) == 0 &&
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lines_[i][cons_len] == ',') {
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return lines_[i] + cons_len + 1;
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}
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}
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return NULL;
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}
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private:
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void FillLines() {
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if (lines_.length() > 0) return;
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stream_.Put('\0');
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stream_str_ = stream_.ToCString();
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const char* pos = *stream_str_;
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while (pos != NULL && *pos != '\0') {
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lines_.Add(pos);
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pos = strchr(pos, '\0');
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if (pos != NULL) ++pos;
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}
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}
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i::HeapStringAllocator allocator_;
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i::StringStream stream_;
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i::SmartPointer<const char> stream_str_;
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i::List<const char*> lines_;
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};
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} // namespace
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TEST(RetainerProfile) {
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v8::HandleScope scope;
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LocalContext env;
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CompileAndRunScript(
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"function A() {}\n"
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"function B(x) { this.x = x; }\n"
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"function C(x) { this.x1 = x; this.x2 = x; }\n"
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"var a = new A();\n"
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"var b1 = new B(a), b2 = new B(a);\n"
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"var c = new C(a);");
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RetainerHeapProfile ret_profile;
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i::AssertNoAllocation no_alloc;
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i::HeapIterator iterator;
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for (i::HeapObject* obj = iterator.next(); obj != NULL; obj = iterator.next())
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ret_profile.CollectStats(obj);
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ret_profile.CoarseAndAggregate();
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RetainerProfilePrinter printer;
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ret_profile.DebugPrintStats(&printer);
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const char* retainers_of_a = printer.GetRetainers("A");
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// The order of retainers is unspecified, so we check string length, and
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// verify each retainer separately.
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CHECK_EQ(i::StrLength("(global property);1,B;2,C;2"),
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i::StrLength(retainers_of_a));
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CHECK(strstr(retainers_of_a, "(global property);1") != NULL);
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CHECK(strstr(retainers_of_a, "B;2") != NULL);
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CHECK(strstr(retainers_of_a, "C;2") != NULL);
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CHECK_EQ("(global property);2", printer.GetRetainers("B"));
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CHECK_EQ("(global property);1", printer.GetRetainers("C"));
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}
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namespace {
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class NamedEntriesDetector {
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public:
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NamedEntriesDetector()
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: has_A1(false), has_B1(false), has_C1(false),
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has_A2(false), has_B2(false), has_C2(false) {
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}
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void Apply(i::HeapEntry** entry_ptr) {
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if (IsReachableNodeWithName(*entry_ptr, "A1")) has_A1 = true;
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if (IsReachableNodeWithName(*entry_ptr, "B1")) has_B1 = true;
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if (IsReachableNodeWithName(*entry_ptr, "C1")) has_C1 = true;
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if (IsReachableNodeWithName(*entry_ptr, "A2")) has_A2 = true;
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if (IsReachableNodeWithName(*entry_ptr, "B2")) has_B2 = true;
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if (IsReachableNodeWithName(*entry_ptr, "C2")) has_C2 = true;
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}
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static bool IsReachableNodeWithName(i::HeapEntry* entry, const char* name) {
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return strcmp(name, entry->name()) == 0 && entry->painted_reachable();
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}
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bool has_A1;
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bool has_B1;
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bool has_C1;
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bool has_A2;
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bool has_B2;
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bool has_C2;
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};
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} // namespace
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static const v8::HeapGraphNode* GetGlobalObject(
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const v8::HeapSnapshot* snapshot) {
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CHECK_EQ(1, snapshot->GetRoot()->GetChildrenCount());
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return snapshot->GetRoot()->GetChild(0)->GetToNode();
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}
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static const v8::HeapGraphNode* GetProperty(const v8::HeapGraphNode* node,
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v8::HeapGraphEdge::Type type,
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const char* name) {
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for (int i = 0, count = node->GetChildrenCount(); i < count; ++i) {
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const v8::HeapGraphEdge* prop = node->GetChild(i);
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v8::String::AsciiValue prop_name(prop->GetName());
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if (prop->GetType() == type && strcmp(name, *prop_name) == 0)
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return prop->GetToNode();
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}
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return NULL;
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}
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static bool IsNodeRetainedAs(const v8::HeapGraphNode* node,
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v8::HeapGraphEdge::Type type,
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const char* name) {
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for (int i = 0, count = node->GetRetainersCount(); i < count; ++i) {
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const v8::HeapGraphEdge* prop = node->GetRetainer(i);
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v8::String::AsciiValue prop_name(prop->GetName());
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if (prop->GetType() == type && strcmp(name, *prop_name) == 0)
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return true;
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}
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return false;
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}
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static bool HasString(const v8::HeapGraphNode* node, const char* contents) {
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for (int i = 0, count = node->GetChildrenCount(); i < count; ++i) {
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const v8::HeapGraphEdge* prop = node->GetChild(i);
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const v8::HeapGraphNode* node = prop->GetToNode();
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if (node->GetType() == v8::HeapGraphNode::kString) {
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v8::String::AsciiValue node_name(node->GetName());
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if (strcmp(contents, *node_name) == 0) return true;
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}
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}
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return false;
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}
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TEST(HeapSnapshot) {
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v8::HandleScope scope;
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v8::Handle<v8::String> token1 = v8::String::New("token1");
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LocalContext env1;
|
|
env1->SetSecurityToken(token1);
|
|
|
|
CompileAndRunScript(
|
|
"function A1() {}\n"
|
|
"function B1(x) { this.x = x; }\n"
|
|
"function C1(x) { this.x1 = x; this.x2 = x; }\n"
|
|
"var a1 = new A1();\n"
|
|
"var b1_1 = new B1(a1), b1_2 = new B1(a1);\n"
|
|
"var c1 = new C1(a1);");
|
|
|
|
v8::Handle<v8::String> token2 = v8::String::New("token2");
|
|
LocalContext env2;
|
|
env2->SetSecurityToken(token2);
|
|
|
|
CompileAndRunScript(
|
|
"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::String::New("env2"));
|
|
i::HeapSnapshot* i_snapshot_env2 =
|
|
const_cast<i::HeapSnapshot*>(
|
|
reinterpret_cast<const i::HeapSnapshot*>(snapshot_env2));
|
|
const v8::HeapGraphNode* global_env2 = GetGlobalObject(snapshot_env2);
|
|
// Paint all nodes reachable from global object.
|
|
i_snapshot_env2->ClearPaint();
|
|
const_cast<i::HeapEntry*>(
|
|
reinterpret_cast<const i::HeapEntry*>(global_env2))->PaintAllReachable();
|
|
|
|
// Verify, that JS global object of env2 doesn't have '..1'
|
|
// properties, but has '..2' properties.
|
|
CHECK_EQ(NULL, GetProperty(global_env2, v8::HeapGraphEdge::kProperty, "a1"));
|
|
CHECK_EQ(
|
|
NULL, GetProperty(global_env2, v8::HeapGraphEdge::kProperty, "b1_1"));
|
|
CHECK_EQ(
|
|
NULL, GetProperty(global_env2, v8::HeapGraphEdge::kProperty, "b1_2"));
|
|
CHECK_EQ(NULL, GetProperty(global_env2, v8::HeapGraphEdge::kProperty, "c1"));
|
|
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"));
|
|
|
|
// Verify that anything related to '[ABC]1' is not reachable.
|
|
NamedEntriesDetector det;
|
|
i_snapshot_env2->IterateEntries(&det);
|
|
CHECK(!det.has_A1);
|
|
CHECK(!det.has_B1);
|
|
CHECK(!det.has_C1);
|
|
CHECK(det.has_A2);
|
|
CHECK(det.has_B2);
|
|
CHECK(det.has_C2);
|
|
|
|
// Verify 'a2' object retainers. They are:
|
|
// - (global object).a2
|
|
// - c2.x1, c2.x2, c2[1]
|
|
// - b2_1 and b2_2 closures: via 'x' variable
|
|
CHECK_EQ(6, a2_node->GetRetainingPathsCount());
|
|
bool has_global_obj_a2_ref = false;
|
|
bool has_c2_x1_ref = false, has_c2_x2_ref = false, has_c2_1_ref = false;
|
|
bool has_b2_1_x_ref = false, has_b2_2_x_ref = false;
|
|
for (int i = 0; i < a2_node->GetRetainingPathsCount(); ++i) {
|
|
const v8::HeapGraphPath* path = a2_node->GetRetainingPath(i);
|
|
const int edges_count = path->GetEdgesCount();
|
|
CHECK_GT(edges_count, 0);
|
|
const v8::HeapGraphEdge* last_edge = path->GetEdge(edges_count - 1);
|
|
v8::String::AsciiValue last_edge_name(last_edge->GetName());
|
|
if (strcmp("a2", *last_edge_name) == 0
|
|
&& last_edge->GetType() == v8::HeapGraphEdge::kProperty) {
|
|
has_global_obj_a2_ref = true;
|
|
continue;
|
|
}
|
|
CHECK_GT(edges_count, 1);
|
|
const v8::HeapGraphEdge* prev_edge = path->GetEdge(edges_count - 2);
|
|
v8::String::AsciiValue prev_edge_name(prev_edge->GetName());
|
|
if (strcmp("x1", *last_edge_name) == 0
|
|
&& last_edge->GetType() == v8::HeapGraphEdge::kProperty
|
|
&& strcmp("c2", *prev_edge_name) == 0) has_c2_x1_ref = true;
|
|
if (strcmp("x2", *last_edge_name) == 0
|
|
&& last_edge->GetType() == v8::HeapGraphEdge::kProperty
|
|
&& strcmp("c2", *prev_edge_name) == 0) has_c2_x2_ref = true;
|
|
if (strcmp("1", *last_edge_name) == 0
|
|
&& last_edge->GetType() == v8::HeapGraphEdge::kElement
|
|
&& strcmp("c2", *prev_edge_name) == 0) has_c2_1_ref = true;
|
|
if (strcmp("x", *last_edge_name) == 0
|
|
&& last_edge->GetType() == v8::HeapGraphEdge::kContextVariable
|
|
&& strcmp("b2_1", *prev_edge_name) == 0) has_b2_1_x_ref = true;
|
|
if (strcmp("x", *last_edge_name) == 0
|
|
&& last_edge->GetType() == v8::HeapGraphEdge::kContextVariable
|
|
&& strcmp("b2_2", *prev_edge_name) == 0) has_b2_2_x_ref = true;
|
|
}
|
|
CHECK(has_global_obj_a2_ref);
|
|
CHECK(has_c2_x1_ref);
|
|
CHECK(has_c2_x2_ref);
|
|
CHECK(has_c2_1_ref);
|
|
CHECK(has_b2_1_x_ref);
|
|
CHECK(has_b2_2_x_ref);
|
|
}
|
|
|
|
|
|
TEST(HeapSnapshotObjectSizes) {
|
|
v8::HandleScope scope;
|
|
LocalContext env;
|
|
|
|
// -a-> X1 --a
|
|
// x -b-> X2 <-|
|
|
CompileAndRunScript(
|
|
"function X(a, b) { this.a = a; this.b = b; }\n"
|
|
"x = new X(new X(), new X());\n"
|
|
"x.a.a = x.b;");
|
|
const v8::HeapSnapshot* snapshot =
|
|
v8::HeapProfiler::TakeSnapshot(v8::String::New("sizes"));
|
|
const v8::HeapGraphNode* global = GetGlobalObject(snapshot);
|
|
const v8::HeapGraphNode* x =
|
|
GetProperty(global, v8::HeapGraphEdge::kProperty, "x");
|
|
CHECK_NE(NULL, x);
|
|
const v8::HeapGraphNode* x_prototype =
|
|
GetProperty(x, v8::HeapGraphEdge::kProperty, "prototype");
|
|
CHECK_NE(NULL, x_prototype);
|
|
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);
|
|
CHECK_EQ(
|
|
x->GetSelfSize() * 3,
|
|
x->GetReachableSize() - x_prototype->GetReachableSize());
|
|
CHECK_EQ(
|
|
x->GetSelfSize() * 3 + x_prototype->GetSelfSize(), x->GetRetainedSize());
|
|
CHECK_EQ(
|
|
x1->GetSelfSize() * 2,
|
|
x1->GetReachableSize() - x_prototype->GetReachableSize());
|
|
CHECK_EQ(
|
|
x1->GetSelfSize(), x1->GetRetainedSize());
|
|
CHECK_EQ(
|
|
x2->GetSelfSize(),
|
|
x2->GetReachableSize() - x_prototype->GetReachableSize());
|
|
CHECK_EQ(
|
|
x2->GetSelfSize(), x2->GetRetainedSize());
|
|
}
|
|
|
|
|
|
TEST(HeapSnapshotEntryChildren) {
|
|
v8::HandleScope scope;
|
|
LocalContext env;
|
|
|
|
CompileAndRunScript(
|
|
"function A() { }\n"
|
|
"a = new A;");
|
|
const v8::HeapSnapshot* snapshot =
|
|
v8::HeapProfiler::TakeSnapshot(v8::String::New("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;
|
|
|
|
CompileAndRunScript(
|
|
"function lazy(x) { return x - 1; }\n"
|
|
"function compiled(x) { return x + 1; }\n"
|
|
"var inferred = function(x) { return x; }\n"
|
|
"var anonymous = (function() { return function() { return 0; } })();\n"
|
|
"compiled(1)");
|
|
const v8::HeapSnapshot* snapshot =
|
|
v8::HeapProfiler::TakeSnapshot(v8::String::New("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* inferred =
|
|
GetProperty(global, v8::HeapGraphEdge::kProperty, "inferred");
|
|
CHECK_NE(NULL, inferred);
|
|
CHECK_EQ(v8::HeapGraphNode::kClosure, inferred->GetType());
|
|
v8::String::AsciiValue inferred_name(inferred->GetName());
|
|
CHECK_EQ("inferred", *inferred_name);
|
|
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 function)", *anonymous_name);
|
|
|
|
// Find references to code.
|
|
const v8::HeapGraphNode* compiled_code =
|
|
GetProperty(compiled, v8::HeapGraphEdge::kInternal, "code");
|
|
CHECK_NE(NULL, compiled_code);
|
|
const v8::HeapGraphNode* lazy_code =
|
|
GetProperty(lazy, v8::HeapGraphEdge::kInternal, "code");
|
|
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);
|
|
}
|
|
|
|
|
|
// Trying to introduce a check helper for uint64_t causes many
|
|
// overloading ambiguities, so it seems easier just to cast
|
|
// them to a signed type.
|
|
#define CHECK_EQ_UINT64_T(a, b) \
|
|
CHECK_EQ(static_cast<int64_t>(a), static_cast<int64_t>(b))
|
|
#define CHECK_NE_UINT64_T(a, b) \
|
|
CHECK((a) != (b)) // NOLINT
|
|
|
|
TEST(HeapEntryIdsAndGC) {
|
|
v8::HandleScope scope;
|
|
LocalContext env;
|
|
|
|
CompileAndRunScript(
|
|
"function A() {}\n"
|
|
"function B(x) { this.x = x; }\n"
|
|
"var a = new A();\n"
|
|
"var b = new B(a);");
|
|
const v8::HeapSnapshot* snapshot1 =
|
|
v8::HeapProfiler::TakeSnapshot(v8::String::New("s1"));
|
|
|
|
i::Heap::CollectAllGarbage(true); // Enforce compaction.
|
|
|
|
const v8::HeapSnapshot* snapshot2 =
|
|
v8::HeapProfiler::TakeSnapshot(v8::String::New("s2"));
|
|
|
|
const v8::HeapGraphNode* global1 = GetGlobalObject(snapshot1);
|
|
const v8::HeapGraphNode* global2 = GetGlobalObject(snapshot2);
|
|
CHECK_NE_UINT64_T(0, global1->GetId());
|
|
CHECK_EQ_UINT64_T(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_UINT64_T(0, A1->GetId());
|
|
CHECK_EQ_UINT64_T(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_UINT64_T(0, B1->GetId());
|
|
CHECK_EQ_UINT64_T(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_UINT64_T(0, a1->GetId());
|
|
CHECK_EQ_UINT64_T(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_UINT64_T(0, b1->GetId());
|
|
CHECK_EQ_UINT64_T(b1->GetId(), b2->GetId());
|
|
}
|
|
|
|
|
|
TEST(HeapSnapshotsDiff) {
|
|
v8::HandleScope scope;
|
|
LocalContext env;
|
|
|
|
CompileAndRunScript(
|
|
"function A() {}\n"
|
|
"function B(x) { this.x = x; }\n"
|
|
"var a = new A();\n"
|
|
"var b = new B(a);");
|
|
const v8::HeapSnapshot* snapshot1 =
|
|
v8::HeapProfiler::TakeSnapshot(v8::String::New("s1"));
|
|
|
|
CompileAndRunScript(
|
|
"delete a;\n"
|
|
"b.x = null;\n"
|
|
"var a = new A();\n"
|
|
"var b2 = new B(a);");
|
|
const v8::HeapSnapshot* snapshot2 =
|
|
v8::HeapProfiler::TakeSnapshot(v8::String::New("s2"));
|
|
|
|
const v8::HeapSnapshotsDiff* diff = snapshot1->CompareWith(snapshot2);
|
|
|
|
// Verify additions: ensure that addition of A and B was detected.
|
|
const v8::HeapGraphNode* additions_root = diff->GetAdditionsRoot();
|
|
bool found_A = false, found_B = false;
|
|
uint64_t s1_A_id = 0;
|
|
for (int i = 0, count = additions_root->GetChildrenCount(); i < count; ++i) {
|
|
const v8::HeapGraphEdge* prop = additions_root->GetChild(i);
|
|
const v8::HeapGraphNode* node = prop->GetToNode();
|
|
if (node->GetType() == v8::HeapGraphNode::kObject) {
|
|
v8::String::AsciiValue node_name(node->GetName());
|
|
if (strcmp(*node_name, "A") == 0) {
|
|
CHECK(IsNodeRetainedAs(node, v8::HeapGraphEdge::kProperty, "a"));
|
|
CHECK(!found_A);
|
|
found_A = true;
|
|
s1_A_id = node->GetId();
|
|
} else if (strcmp(*node_name, "B") == 0) {
|
|
CHECK(IsNodeRetainedAs(node, v8::HeapGraphEdge::kProperty, "b2"));
|
|
CHECK(!found_B);
|
|
found_B = true;
|
|
}
|
|
}
|
|
}
|
|
CHECK(found_A);
|
|
CHECK(found_B);
|
|
|
|
// Verify deletions: ensure that deletion of A was detected.
|
|
const v8::HeapGraphNode* deletions_root = diff->GetDeletionsRoot();
|
|
bool found_A_del = false;
|
|
uint64_t s2_A_id = 0;
|
|
for (int i = 0, count = deletions_root->GetChildrenCount(); i < count; ++i) {
|
|
const v8::HeapGraphEdge* prop = deletions_root->GetChild(i);
|
|
const v8::HeapGraphNode* node = prop->GetToNode();
|
|
if (node->GetType() == v8::HeapGraphNode::kObject) {
|
|
v8::String::AsciiValue node_name(node->GetName());
|
|
if (strcmp(*node_name, "A") == 0) {
|
|
CHECK(IsNodeRetainedAs(node, v8::HeapGraphEdge::kProperty, "a"));
|
|
CHECK(!found_A_del);
|
|
found_A_del = true;
|
|
s2_A_id = node->GetId();
|
|
}
|
|
}
|
|
}
|
|
CHECK(found_A_del);
|
|
CHECK_NE_UINT64_T(0, s1_A_id);
|
|
CHECK(s1_A_id != s2_A_id);
|
|
}
|
|
|
|
|
|
namespace v8 {
|
|
namespace internal {
|
|
|
|
class HeapSnapshotTester {
|
|
public:
|
|
static int CalculateNetworkSize(JSObject* obj) {
|
|
return HeapSnapshot::CalculateNetworkSize(obj);
|
|
}
|
|
};
|
|
|
|
} } // namespace v8::internal
|
|
|
|
// http://code.google.com/p/v8/issues/detail?id=822
|
|
// Trying to call CalculateNetworkSize on an object with elements set
|
|
// to non-FixedArray may cause an assertion error in debug builds.
|
|
TEST(Issue822) {
|
|
v8::HandleScope scope;
|
|
LocalContext context;
|
|
const int kElementCount = 260;
|
|
uint8_t* pixel_data = reinterpret_cast<uint8_t*>(malloc(kElementCount));
|
|
i::Handle<i::PixelArray> pixels = i::Factory::NewPixelArray(kElementCount,
|
|
pixel_data);
|
|
v8::Handle<v8::Object> obj = v8::Object::New();
|
|
// Set the elements to be the pixels.
|
|
obj->SetIndexedPropertiesToPixelData(pixel_data, kElementCount);
|
|
i::Handle<i::JSObject> jsobj = v8::Utils::OpenHandle(*obj);
|
|
// This call must not cause an assertion error in debug builds.
|
|
i::HeapSnapshotTester::CalculateNetworkSize(*jsobj);
|
|
}
|
|
|
|
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static const v8::HeapGraphNode* GetChild(
|
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const v8::HeapGraphNode* node,
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v8::HeapGraphNode::Type type,
|
|
const char* name,
|
|
const v8::HeapGraphNode* after = NULL) {
|
|
bool ignore_child = after == NULL ? false : true;
|
|
for (int i = 0, count = node->GetChildrenCount(); i < count; ++i) {
|
|
const v8::HeapGraphEdge* prop = node->GetChild(i);
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|
const v8::HeapGraphNode* child = prop->GetToNode();
|
|
v8::String::AsciiValue child_name(child->GetName());
|
|
if (!ignore_child
|
|
&& child->GetType() == type
|
|
&& strcmp(name, *child_name) == 0)
|
|
return child;
|
|
if (after != NULL && child == after) ignore_child = false;
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
static bool IsNodeRetainedAs(const v8::HeapGraphNode* node,
|
|
int element) {
|
|
for (int i = 0, count = node->GetRetainersCount(); i < count; ++i) {
|
|
const v8::HeapGraphEdge* prop = node->GetRetainer(i);
|
|
if (prop->GetType() == v8::HeapGraphEdge::kElement
|
|
&& element == prop->GetName()->Int32Value())
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
TEST(AggregatedHeapSnapshot) {
|
|
v8::HandleScope scope;
|
|
LocalContext env;
|
|
|
|
CompileAndRunScript(
|
|
"function A() {}\n"
|
|
"function B(x) { this.x = x; }\n"
|
|
"var a = new A();\n"
|
|
"var b = new B(a);");
|
|
const v8::HeapSnapshot* snapshot =
|
|
v8::HeapProfiler::TakeSnapshot(
|
|
v8::String::New("agg"), v8::HeapSnapshot::kAggregated);
|
|
const v8::HeapGraphNode* strings = GetChild(snapshot->GetRoot(),
|
|
v8::HeapGraphNode::kInternal,
|
|
"STRING_TYPE");
|
|
CHECK_NE(NULL, strings);
|
|
CHECK_NE(0, strings->GetSelfSize());
|
|
CHECK_NE(0, strings->GetInstancesCount());
|
|
const v8::HeapGraphNode* maps = GetChild(snapshot->GetRoot(),
|
|
v8::HeapGraphNode::kInternal,
|
|
"MAP_TYPE");
|
|
CHECK_NE(NULL, maps);
|
|
CHECK_NE(0, maps->GetSelfSize());
|
|
CHECK_NE(0, maps->GetInstancesCount());
|
|
|
|
const v8::HeapGraphNode* a = GetChild(snapshot->GetRoot(),
|
|
v8::HeapGraphNode::kObject,
|
|
"A");
|
|
CHECK_NE(NULL, a);
|
|
CHECK_NE(0, a->GetSelfSize());
|
|
CHECK_EQ(1, a->GetInstancesCount());
|
|
|
|
const v8::HeapGraphNode* b = GetChild(snapshot->GetRoot(),
|
|
v8::HeapGraphNode::kObject,
|
|
"B");
|
|
CHECK_NE(NULL, b);
|
|
CHECK_NE(0, b->GetSelfSize());
|
|
CHECK_EQ(1, b->GetInstancesCount());
|
|
|
|
const v8::HeapGraphNode* glob_prop = GetChild(snapshot->GetRoot(),
|
|
v8::HeapGraphNode::kObject,
|
|
"(global property)",
|
|
b);
|
|
CHECK_NE(NULL, glob_prop);
|
|
CHECK_EQ(0, glob_prop->GetSelfSize());
|
|
CHECK_EQ(0, glob_prop->GetInstancesCount());
|
|
CHECK_NE(0, glob_prop->GetChildrenCount());
|
|
|
|
const v8::HeapGraphNode* a_from_glob_prop = GetChild(
|
|
glob_prop,
|
|
v8::HeapGraphNode::kObject,
|
|
"A");
|
|
CHECK_NE(NULL, a_from_glob_prop);
|
|
CHECK_EQ(0, a_from_glob_prop->GetSelfSize());
|
|
CHECK_EQ(0, a_from_glob_prop->GetInstancesCount());
|
|
CHECK_EQ(0, a_from_glob_prop->GetChildrenCount()); // Retains nothing.
|
|
CHECK(IsNodeRetainedAs(a_from_glob_prop, 1)); // (global propery) has 1 ref.
|
|
|
|
const v8::HeapGraphNode* b_with_children = GetChild(
|
|
snapshot->GetRoot(),
|
|
v8::HeapGraphNode::kObject,
|
|
"B",
|
|
b);
|
|
CHECK_NE(NULL, b_with_children);
|
|
CHECK_EQ(0, b_with_children->GetSelfSize());
|
|
CHECK_EQ(0, b_with_children->GetInstancesCount());
|
|
CHECK_NE(0, b_with_children->GetChildrenCount());
|
|
|
|
const v8::HeapGraphNode* a_from_b = GetChild(
|
|
b_with_children,
|
|
v8::HeapGraphNode::kObject,
|
|
"A");
|
|
CHECK_NE(NULL, a_from_b);
|
|
CHECK_EQ(0, a_from_b->GetSelfSize());
|
|
CHECK_EQ(0, a_from_b->GetInstancesCount());
|
|
CHECK_EQ(0, a_from_b->GetChildrenCount()); // Retains nothing.
|
|
CHECK(IsNodeRetainedAs(a_from_b, 1)); // B has 1 ref to A.
|
|
}
|
|
|
|
#endif // ENABLE_LOGGING_AND_PROFILING
|