stress-scavenge-observer.h

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// Copyright 2017 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_HEAP_STRESS_SCAVENGE_OBSERVER_H_
#define V8_HEAP_STRESS_SCAVENGE_OBSERVER_H_
 
#include "src/heap/heap.h"
 
namespace v8 {
namespace internal {
 
class StressScavengeObserver : public AllocationObserver {
 public:
  explicit StressScavengeObserver(Heap* heap);
 
  void Step(int bytes_allocated, Address soon_object, size_t size) override;
 
  bool HasRequestedGC() const;
  void RequestedGCDone();
 
  // The maximum percent of the newspace capacity reached. This is tracked when
  // specifying --fuzzer-gc-analysis.
  double MaxNewSpaceSizeReached() const;
 
 private:
  Heap* heap_;
  int limit_percentage_;
  bool has_requested_gc_;
 
  double max_new_space_size_reached_;
 
  int NextLimit(int min = 0);
};
 
}  // namespace internal
}  // namespace v8
 
#endif  // V8_HEAP_STRESS_SCAVENGE_OBSERVER_H_