1 /*
   2  * Copyright (c) 2003, 2015, 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_GC_SHARED_GCSTATS_HPP
  26 #define SHARE_VM_GC_SHARED_GCSTATS_HPP
  27 
  28 #include "gc/shared/gcUtil.hpp"
  29 
  30 class GCStats : public CHeapObj<mtGC> {
  31  protected:
  32   // Avg amount promoted; used for avoiding promotion undo
  33   // This class does not update deviations if the sample is zero.
  34   AdaptivePaddedNoZeroDevAverage*   _avg_promoted;
  35 
  36  public:
  37   GCStats();
  38 
  39   enum Name {
  40     GCStatsKind,
  41     CMSGCStatsKind
  42   };
  43 
  44   virtual Name kind() {
  45     return GCStatsKind;
  46   }
  47 
  48   AdaptivePaddedNoZeroDevAverage*  avg_promoted() const { return _avg_promoted; }
  49 
  50   // Average in bytes
  51   size_t average_promoted_in_bytes() const {
  52     return (size_t)_avg_promoted->average();
  53   }
  54 
  55   // Padded average in bytes
  56   size_t padded_average_promoted_in_bytes() const {
  57     return (size_t)_avg_promoted->padded_average();
  58   }
  59 };
  60 
  61 class CMSGCStats : public GCStats {
  62  public:
  63   CMSGCStats();
  64 
  65   virtual Name kind() {
  66     return CMSGCStatsKind;
  67   }
  68 };
  69 
  70 #endif // SHARE_VM_GC_SHARED_GCSTATS_HPP
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