1 /*
   2  * Copyright (c) 2007, 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 #include "precompiled.hpp"
  26 #include "gc_implementation/concurrentMarkSweep/cmsAdaptiveSizePolicy.hpp"
  27 #include "gc_implementation/concurrentMarkSweep/cmsCollectorPolicy.hpp"
  28 #include "gc_implementation/concurrentMarkSweep/cmsGCAdaptivePolicyCounters.hpp"
  29 #include "gc_implementation/parNew/parNewGeneration.hpp"
  30 #include "gc_implementation/shared/gcPolicyCounters.hpp"
  31 #include "gc_implementation/shared/vmGCOperations.hpp"
  32 #include "memory/cardTableRS.hpp"
  33 #include "memory/collectorPolicy.hpp"
  34 #include "memory/gcLocker.inline.hpp"
  35 #include "memory/genCollectedHeap.hpp"
  36 #include "memory/generationSpec.hpp"
  37 #include "memory/space.hpp"
  38 #include "memory/universe.hpp"
  39 #include "runtime/arguments.hpp"
  40 #include "runtime/globals_extension.hpp"
  41 #include "runtime/handles.inline.hpp"
  42 #include "runtime/java.hpp"
  43 #include "runtime/thread.inline.hpp"
  44 #include "runtime/vmThread.hpp"
  45 
  46 //
  47 // ConcurrentMarkSweepPolicy methods
  48 //
  49 
  50 ConcurrentMarkSweepPolicy::ConcurrentMarkSweepPolicy() {
  51   initialize_all();
  52 }
  53 
  54 void ConcurrentMarkSweepPolicy::initialize_generations() {
  55   _generations = new GenerationSpecPtr[number_of_generations()];
  56   if (_generations == NULL)
  57     vm_exit_during_initialization("Unable to allocate gen spec");
  58 
  59   if (UseParNewGC) {
  60     if (UseAdaptiveSizePolicy) {
  61       _generations[0] = new GenerationSpec(Generation::ASParNew,
  62                                            _initial_gen0_size, _max_gen0_size);
  63     } else {
  64       _generations[0] = new GenerationSpec(Generation::ParNew,
  65                                            _initial_gen0_size, _max_gen0_size);
  66     }
  67   } else {
  68     _generations[0] = new GenerationSpec(Generation::DefNew,
  69                                          _initial_gen0_size, _max_gen0_size);
  70   }
  71   if (UseAdaptiveSizePolicy) {
  72     _generations[1] = new GenerationSpec(Generation::ASConcurrentMarkSweep,
  73                             _initial_gen1_size, _max_gen1_size);
  74   } else {
  75     _generations[1] = new GenerationSpec(Generation::ConcurrentMarkSweep,
  76                             _initial_gen1_size, _max_gen1_size);
  77   }
  78 
  79   if (_generations[0] == NULL || _generations[1] == NULL) {
  80     vm_exit_during_initialization("Unable to allocate gen spec");
  81   }
  82 }
  83 
  84 void ConcurrentMarkSweepPolicy::initialize_size_policy(size_t init_eden_size,
  85                                                size_t init_promo_size,
  86                                                size_t init_survivor_size) {
  87   double max_gc_minor_pause_sec = ((double) MaxGCMinorPauseMillis)/1000.0;
  88   double max_gc_pause_sec = ((double) MaxGCPauseMillis)/1000.0;
  89   _size_policy = new CMSAdaptiveSizePolicy(init_eden_size,
  90                                            init_promo_size,
  91                                            init_survivor_size,
  92                                            max_gc_minor_pause_sec,
  93                                            max_gc_pause_sec,
  94                                            GCTimeRatio);
  95 }
  96 
  97 void ConcurrentMarkSweepPolicy::initialize_gc_policy_counters() {
  98   // initialize the policy counters - 2 collectors, 3 generations
  99   if (UseParNewGC) {
 100     _gc_policy_counters = new GCPolicyCounters("ParNew:CMS", 2, 3);
 101   }
 102   else {
 103     _gc_policy_counters = new GCPolicyCounters("Copy:CMS", 2, 3);
 104   }
 105 }
 106 
 107 // Returns true if the incremental mode is enabled.
 108 bool ConcurrentMarkSweepPolicy::has_soft_ended_eden()
 109 {
 110   return CMSIncrementalMode;
 111 }
 112 
 113 
 114 //
 115 // ASConcurrentMarkSweepPolicy methods
 116 //
 117 
 118 void ASConcurrentMarkSweepPolicy::initialize_gc_policy_counters() {
 119 
 120   assert(size_policy() != NULL, "A size policy is required");
 121   // initialize the policy counters - 2 collectors, 3 generations
 122   if (UseParNewGC) {
 123     _gc_policy_counters = new CMSGCAdaptivePolicyCounters("ParNew:CMS", 2, 3,
 124       size_policy());
 125   }
 126   else {
 127     _gc_policy_counters = new CMSGCAdaptivePolicyCounters("Copy:CMS", 2, 3,
 128       size_policy());
 129   }
 130 }
--- EOF ---