// Copyright 2009-2010 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef V8_PROFILER_HEAP_PROFILER_H_
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#define V8_PROFILER_HEAP_PROFILER_H_
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#include <memory>
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#include <vector>
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#include "include/v8-profiler.h"
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#include "src/base/platform/mutex.h"
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#include "src/debug/debug-interface.h"
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#include "src/globals.h"
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#include "src/heap/heap.h"
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namespace v8 {
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namespace internal {
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// Forward declarations.
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class AllocationTracker;
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class HeapObjectsMap;
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class HeapSnapshot;
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class SamplingHeapProfiler;
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class StringsStorage;
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class HeapProfiler : public HeapObjectAllocationTracker {
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public:
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explicit HeapProfiler(Heap* heap);
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~HeapProfiler();
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HeapSnapshot* TakeSnapshot(
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v8::ActivityControl* control,
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v8::HeapProfiler::ObjectNameResolver* resolver);
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bool StartSamplingHeapProfiler(uint64_t sample_interval, int stack_depth,
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v8::HeapProfiler::SamplingFlags);
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void StopSamplingHeapProfiler();
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bool is_sampling_allocations() { return !!sampling_heap_profiler_; }
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AllocationProfile* GetAllocationProfile();
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void StartHeapObjectsTracking(bool track_allocations);
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void StopHeapObjectsTracking();
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AllocationTracker* allocation_tracker() const {
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return allocation_tracker_.get();
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}
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HeapObjectsMap* heap_object_map() const { return ids_.get(); }
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StringsStorage* names() const { return names_.get(); }
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SnapshotObjectId PushHeapObjectsStats(OutputStream* stream,
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int64_t* timestamp_us);
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int GetSnapshotsCount();
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HeapSnapshot* GetSnapshot(int index);
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SnapshotObjectId GetSnapshotObjectId(Handle<Object> obj);
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void DeleteAllSnapshots();
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void RemoveSnapshot(HeapSnapshot* snapshot);
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void ObjectMoveEvent(Address from, Address to, int size);
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void AllocationEvent(Address addr, int size) override;
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void UpdateObjectSizeEvent(Address addr, int size) override;
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void DefineWrapperClass(
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uint16_t class_id, v8::HeapProfiler::WrapperInfoCallback callback);
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v8::RetainedObjectInfo* ExecuteWrapperClassCallback(uint16_t class_id,
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Object** wrapper);
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void SetGetRetainerInfosCallback(
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v8::HeapProfiler::GetRetainerInfosCallback callback);
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v8::HeapProfiler::RetainerInfos GetRetainerInfos(Isolate* isolate);
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void AddBuildEmbedderGraphCallback(
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v8::HeapProfiler::BuildEmbedderGraphCallback callback, void* data);
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void RemoveBuildEmbedderGraphCallback(
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v8::HeapProfiler::BuildEmbedderGraphCallback callback, void* data);
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void BuildEmbedderGraph(Isolate* isolate, v8::EmbedderGraph* graph);
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bool HasBuildEmbedderGraphCallback() {
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return !build_embedder_graph_callbacks_.empty();
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}
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bool is_tracking_object_moves() const { return is_tracking_object_moves_; }
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Handle<HeapObject> FindHeapObjectById(SnapshotObjectId id);
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void ClearHeapObjectMap();
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Isolate* isolate() const;
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void QueryObjects(Handle<Context> context,
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debug::QueryObjectPredicate* predicate,
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v8::PersistentValueVector<v8::Object>* objects);
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private:
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Heap* heap() const;
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// Mapping from HeapObject addresses to objects' uids.
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std::unique_ptr<HeapObjectsMap> ids_;
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std::vector<std::unique_ptr<HeapSnapshot>> snapshots_;
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std::unique_ptr<StringsStorage> names_;
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std::vector<v8::HeapProfiler::WrapperInfoCallback> wrapper_callbacks_;
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std::unique_ptr<AllocationTracker> allocation_tracker_;
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bool is_tracking_object_moves_;
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base::Mutex profiler_mutex_;
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std::unique_ptr<SamplingHeapProfiler> sampling_heap_profiler_;
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v8::HeapProfiler::GetRetainerInfosCallback get_retainer_infos_callback_ =
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nullptr;
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std::vector<std::pair<v8::HeapProfiler::BuildEmbedderGraphCallback, void*>>
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build_embedder_graph_callbacks_;
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DISALLOW_COPY_AND_ASSIGN(HeapProfiler);
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};
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} // namespace internal
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} // namespace v8
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#endif // V8_PROFILER_HEAP_PROFILER_H_
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