src/heap-profiler.h

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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;

#define HEAP_PROFILE(heap, call)                                             \
  do {                                                                       \
    v8::internal::HeapProfiler* profiler = heap->isolate()->heap_profiler(); \
    if (profiler != NULL && profiler->is_profiling()) {                      \
      profiler->call;                                                        \
    }                                                                        \
  } while (false)

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_