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products/sources/formale Sprachen/Java/Openjdk/src/hotspot/share/gc/shared/ (Sun/Oracle ^©) Datei vom 13.11.2022 mit Größe 2 kB

Quelle generationCounters.hpp Sprache: C

/*
* Copyright (c) 2002, 2021, 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.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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*/

#ifndef SHARE_GC_SHARED_GENERATIONCOUNTERS_HPP
#define SHARE_GC_SHARED_GENERATIONCOUNTERS_HPP

#include "memory/virtualspace.hpp"
#include "runtime/perfDataTypes.hpp"

// A GenerationCounter is a holder class for performance counters
// that track a generation

class GenerationCounters: public CHeapObj<mtGC> {
  friend class VMStructs;

private:
  void initialize(const char* name, int ordinal, int spaces,
                  size_t min_capacity, size_t max_capacity,
                  size_t curr_capacity);

protected:
  PerfVariable*      _current_size;
  VirtualSpace*      _virtual_space;

  // Constant PerfData types don't need to retain a reference.
  // However, it's a good idea to document them here.
  // PerfStringConstant*     _name;
  // PerfConstant*           _min_size;
  // PerfConstant*           _max_size;
  // PerfConstant*           _spaces;

  char*              _name_space;

  // This constructor is only meant for use with the PSGenerationCounters
  // constructor. The need for such an constructor should be eliminated
  // when VirtualSpace and PSVirtualSpace are unified.
  GenerationCounters()
             : _current_size(NULL), _virtual_space(NULL), _name_space(NULL) {}

  // This constructor is used for subclasses that do not have a space
  // associated with them (e.g, in G1).
  GenerationCounters(const char* name, int ordinal, int spaces,
                     size_t min_capacity, size_t max_capacity,
                     size_t curr_capacity);

public:
  GenerationCounters(const char* name, int ordinal, int spaces,
                     size_t min_capacity, size_t max_capacity, VirtualSpace* v);

  ~GenerationCounters();

  virtual void update_all();

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

};
#endif // SHARE_GC_SHARED_GENERATIONCOUNTERS_HPP

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