CSE2410 Fall 2014 Bounce

// Copyright 2009-2010 the V8 project authors. All rights reserved.

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// modification, are permitted provided that the following conditions are

// met:

//

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//       with the distribution.

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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

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#ifndef V8_HEAP_PROFILER_H_

#define V8_HEAP_PROFILER_H_

#include "heap-snapshot-generator-inl.h"

#include "isolate.h"

namespace v8 {

namespace internal {

class HeapSnapshot;

class HeapSnapshotsCollection;

class HeapProfiler {

 public:

  explicit HeapProfiler(Heap* heap);

  ~HeapProfiler();

  size_t GetMemorySizeUsedByProfiler();

  HeapSnapshot* TakeSnapshot(

      const char* name,

      v8::ActivityControl* control,

      v8::HeapProfiler::ObjectNameResolver* resolver);

  HeapSnapshot* TakeSnapshot(

      String* name,

      v8::ActivityControl* control,

      v8::HeapProfiler::ObjectNameResolver* resolver);

  void StartHeapObjectsTracking();

  void StopHeapObjectsTracking();

  static void RecordObjectAllocationFromMasm(Isolate* isolate,

                                             Address obj,

                                             int size);

  SnapshotObjectId PushHeapObjectsStats(OutputStream* stream);

  int GetSnapshotsCount();

  HeapSnapshot* GetSnapshot(int index);

  SnapshotObjectId GetSnapshotObjectId(Handle<Object> obj);

  void DeleteAllSnapshots();

  void ObjectMoveEvent(Address from, Address to, int size);

  void NewObjectEvent(Address addr, int size);

  void UpdateObjectSizeEvent(Address addr, int size);

  void DefineWrapperClass(

      uint16_t class_id, v8::HeapProfiler::WrapperInfoCallback callback);

  v8::RetainedObjectInfo* ExecuteWrapperClassCallback(uint16_t class_id,

                                                      Object** wrapper);

  INLINE(bool is_profiling()) {

    return snapshots_->is_tracking_objects();

  }

  void SetRetainedObjectInfo(UniqueId id, RetainedObjectInfo* info);

  bool is_tracking_allocations() {

    return is_tracking_allocations_;

  }

  void StartHeapAllocationsRecording();

  void StopHeapAllocationsRecording();

  int FindUntrackedObjects() {

    return snapshots_->FindUntrackedObjects();

  }

  void DropCompiledCode();

 private:

  Heap* heap() const { return snapshots_->heap(); }

  HeapSnapshotsCollection* snapshots_;

  unsigned next_snapshot_uid_;

  List<v8::HeapProfiler::WrapperInfoCallback> wrapper_callbacks_;

  bool is_tracking_allocations_;

};

} }  // namespace v8::internal

#endif  // V8_HEAP_PROFILER_H_