/*

 * Copyright (c) 2002, 2019, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

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#ifndef SHARE_GC_SERIAL_CSPACECOUNTERS_HPP

#define SHARE_GC_SERIAL_CSPACECOUNTERS_HPP

#include "gc/shared/generationCounters.hpp"

#include "gc/shared/space.hpp"

#include "runtime/perfData.hpp"

// A CSpaceCounters is a holder class for performance counters

// that track a space;

class CSpaceCounters: public CHeapObj<mtGC> {

  friend class VMStructs;

 private:

  PerfVariable*      _capacity;

  PerfVariable*      _used;

  PerfVariable*      _max_capacity;

  // Constant PerfData types don't need to retain a reference.

  // However, it's a good idea to document them here.

  // PerfConstant*     _size;

  ContiguousSpace*     _space;

  char*                _name_space;

 public:

  CSpaceCounters(const char* name, int ordinal, size_t max_size,

                 ContiguousSpace* s, GenerationCounters* gc);

  ~CSpaceCounters();

  virtual void update_capacity();

  virtual void update_used();

  virtual void update_all();

  const char* name_space() const        { return _name_space; }

};

class ContiguousSpaceUsedHelper : public PerfLongSampleHelper {

  private:

    ContiguousSpace* _space;

  public:

    ContiguousSpaceUsedHelper(ContiguousSpace* space) : _space(space) { }

    jlong take_sample();

};

#endif // SHARE_GC_SERIAL_CSPACECOUNTERS_HPP