samplePriorityQueue.hpp

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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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#ifndef SHARE_JFR_LEAKPROFILER_SAMPLING_SAMPLEPRIORITYQUEUE_HPP
#define SHARE_JFR_LEAKPROFILER_SAMPLING_SAMPLEPRIORITYQUEUE_HPP

#include "memory/allocation.hpp"

class ObjectSample;

// Priority queue that keeps object samples ordered
// by the amount of allocation they span.
class SamplePriorityQueue : public CHeapObj<mtTracing> {
 private:
  ObjectSample** _items;
  size_t _allocated_size;
  int _count;
  size_t _total;

  void swap(int i, int j);
  void moveDown(int index);
  void moveUp(int index);

 public:
  SamplePriorityQueue(size_t size);
  ~SamplePriorityQueue();

  void push(ObjectSample* sample);
  ObjectSample* pop();
  const ObjectSample* peek() const;
  void remove(ObjectSample* sample);
  ObjectSample* item_at(int index);
  size_t total() const;
  int count() const;
};

#endif // SHARE_JFR_LEAKPROFILER_SAMPLING_SAMPLEPRIORITYQUEUE_HPP