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// Copyright 2009-2010 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef V8_PROFILER_HEAP_PROFILER_H_
#define V8_PROFILER_HEAP_PROFILER_H_
#include <memory>
#include <vector>
#include "include/v8-profiler.h"
#include "src/base/platform/mutex.h"
#include "src/debug/debug-interface.h"
#include "src/globals.h"
#include "src/heap/heap.h"
namespace v8 {
namespace internal {
// Forward declarations.
class AllocationTracker;
class HeapObjectsMap;
class HeapSnapshot;
class SamplingHeapProfiler;
class StringsStorage;
class HeapProfiler : public HeapObjectAllocationTracker {
public:
explicit HeapProfiler(Heap* heap);
~HeapProfiler() override;
HeapSnapshot* TakeSnapshot(
v8::ActivityControl* control,
v8::HeapProfiler::ObjectNameResolver* resolver);
bool StartSamplingHeapProfiler(uint64_t sample_interval, int stack_depth,
v8::HeapProfiler::SamplingFlags);
void StopSamplingHeapProfiler();
bool is_sampling_allocations() { return !!sampling_heap_profiler_; }
AllocationProfile* GetAllocationProfile();
void StartHeapObjectsTracking(bool track_allocations);
void StopHeapObjectsTracking();
AllocationTracker* allocation_tracker() const {
return allocation_tracker_.get();
}
HeapObjectsMap* heap_object_map() const { return ids_.get(); }
StringsStorage* names() const { return names_.get(); }
SnapshotObjectId PushHeapObjectsStats(OutputStream* stream,
int64_t* timestamp_us);
int GetSnapshotsCount();
HeapSnapshot* GetSnapshot(int index);
SnapshotObjectId GetSnapshotObjectId(Handle<Object> obj);
void DeleteAllSnapshots();
void RemoveSnapshot(HeapSnapshot* snapshot);
void ObjectMoveEvent(Address from, Address to, int size);
void AllocationEvent(Address addr, int size) override;
void UpdateObjectSizeEvent(Address addr, int size) override;
void AddBuildEmbedderGraphCallback(
v8::HeapProfiler::BuildEmbedderGraphCallback callback, void* data);
void RemoveBuildEmbedderGraphCallback(
v8::HeapProfiler::BuildEmbedderGraphCallback callback, void* data);
void BuildEmbedderGraph(Isolate* isolate, v8::EmbedderGraph* graph);
bool HasBuildEmbedderGraphCallback() {
return !build_embedder_graph_callbacks_.empty();
}
bool is_tracking_object_moves() const { return is_tracking_object_moves_; }
Handle<HeapObject> FindHeapObjectById(SnapshotObjectId id);
void ClearHeapObjectMap();
Isolate* isolate() const;
void QueryObjects(Handle<Context> context,
debug::QueryObjectPredicate* predicate,
v8::PersistentValueVector<v8::Object>* objects);
private:
void MaybeClearStringsStorage();
Heap* heap() const;
// Mapping from HeapObject addresses to objects' uids.
std::unique_ptr<HeapObjectsMap> ids_;
std::vector<std::unique_ptr<HeapSnapshot>> snapshots_;
std::unique_ptr<StringsStorage> names_;
std::unique_ptr<AllocationTracker> allocation_tracker_;
bool is_tracking_object_moves_;
base::Mutex profiler_mutex_;
std::unique_ptr<SamplingHeapProfiler> sampling_heap_profiler_;
std::vector<std::pair<v8::HeapProfiler::BuildEmbedderGraphCallback, void*>>
build_embedder_graph_callbacks_;
DISALLOW_COPY_AND_ASSIGN(HeapProfiler);
};
} // namespace internal
} // namespace v8
#endif // V8_PROFILER_HEAP_PROFILER_H_