1 /*
   2  * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 
  25 #ifndef SHARE_VM_MEMORY_METASPACECOUNTERS_HPP
  26 #define SHARE_VM_MEMORY_METASPACECOUNTERS_HPP
  27 
  28 #include "runtime/perfData.hpp"
  29 
  30 class MetaspaceCounters: public CHeapObj<mtClass> {
  31   friend class VMStructs;
  32   PerfVariable*      _capacity;
  33   PerfVariable*      _used;
  34   PerfVariable*      _max_capacity;
  35   static MetaspaceCounters* _metaspace_counters;
  36   void initialize(size_t min_capacity,
  37                   size_t max_capacity,
  38                   size_t curr_capacity,
  39                   size_t used);
  40  public:
  41   MetaspaceCounters();
  42   ~MetaspaceCounters();
  43 
  44   void update_capacity();
  45   void update_used();
  46   void update_max_capacity();
  47 
  48   void update_all();
  49 
  50   static void initialize_performance_counters();
  51   static void update_performance_counters();
  52 
  53 };
  54 #endif // SHARE_VM_MEMORY_METASPACECOUNTERS_HPP