stress-scavenge-observer.h 975 Bytes
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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:
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  explicit StressScavengeObserver(Heap* heap);
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  void Step(int bytes_allocated, Address soon_object, size_t size) override;

  bool HasRequestedGC() const;
  void RequestedGCDone();

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  // The maximum percent of the newspace capacity reached. This is tracked when
  // specyfing --fuzzer-gc-analysis.
  double MaxNewSpaceSizeReached() const;

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 private:
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  Heap* heap_;
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  int limit_percentage_;
  bool has_requested_gc_;

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  double max_new_space_size_reached_;

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  int NextLimit(int min = 0);
};

}  // namespace internal
}  // namespace v8

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#endif  // V8_HEAP_STRESS_SCAVENGE_OBSERVER_H_