1 /*
   2  * Copyright (c) 2007, 2010, 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
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  24 
  25 #ifndef SHARE_VM_GC_IMPLEMENTATION_CONCURRENTMARKSWEEP_CMSCOLLECTORPOLICY_HPP
  26 #define SHARE_VM_GC_IMPLEMENTATION_CONCURRENTMARKSWEEP_CMSCOLLECTORPOLICY_HPP
  27 
  28 #include "memory/collectorPolicy.hpp"
  29 
  30 class ConcurrentMarkSweepPolicy : public TwoGenerationCollectorPolicy {
  31  protected:
  32   void initialize_alignments();
  33   void initialize_generations();
  34 
  35  public:
  36   ConcurrentMarkSweepPolicy() {}
  37 
  38   ConcurrentMarkSweepPolicy* as_concurrent_mark_sweep_policy() { return this; }
  39 
  40   void initialize_gc_policy_counters();
  41 
  42   virtual void initialize_size_policy(size_t init_eden_size,
  43                                       size_t init_promo_size,
  44                                       size_t init_survivor_size);
  45 
  46   // Returns true if the incremental mode is enabled.
  47   virtual bool has_soft_ended_eden();
  48 };
  49 
  50 class ASConcurrentMarkSweepPolicy : public ConcurrentMarkSweepPolicy {
  51  public:
  52 
  53   // Initialize the jstat counters.  This method requires a
  54   // size policy.  The size policy is expected to be created
  55   // after the generations are fully initialized so the
  56   // initialization of the counters need to be done post
  57   // the initialization of the generations.
  58   void initialize_gc_policy_counters();
  59 
  60   virtual CollectorPolicy::Name kind() {
  61     return CollectorPolicy::ASConcurrentMarkSweepPolicyKind;
  62   }
  63 };
  64 
  65 #endif // SHARE_VM_GC_IMPLEMENTATION_CONCURRENTMARKSWEEP_CMSCOLLECTORPOLICY_HPP