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 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/vmThread.hpp" 44 #ifdef TARGET_OS_FAMILY_linux 45 # include "thread_linux.inline.hpp" 46 #endif 47 #ifdef TARGET_OS_FAMILY_solaris 48 # include "thread_solaris.inline.hpp" 49 #endif 50 #ifdef TARGET_OS_FAMILY_windows 51 # include "thread_windows.inline.hpp" 52 #endif 53 54 // 55 // ConcurrentMarkSweepPolicy methods 56 // 57 58 ConcurrentMarkSweepPolicy::ConcurrentMarkSweepPolicy() { 59 initialize_all(); 60 } 61 62 void ConcurrentMarkSweepPolicy::initialize_generations() { 63 initialize_perm_generation(PermGen::ConcurrentMarkSweep); 64 _generations = new GenerationSpecPtr[number_of_generations()]; 65 if (_generations == NULL) 66 vm_exit_during_initialization("Unable to allocate gen spec"); 67 68 if (ParNewGeneration::in_use()) { 69 if (UseAdaptiveSizePolicy) { 70 _generations[0] = new GenerationSpec(Generation::ASParNew, 71 _initial_gen0_size, _max_gen0_size); 72 } else { 73 _generations[0] = new GenerationSpec(Generation::ParNew, 74 _initial_gen0_size, _max_gen0_size); 75 } 76 } else { 77 _generations[0] = new GenerationSpec(Generation::DefNew, 78 _initial_gen0_size, _max_gen0_size); 79 } 80 if (UseAdaptiveSizePolicy) { 81 _generations[1] = new GenerationSpec(Generation::ASConcurrentMarkSweep, 82 _initial_gen1_size, _max_gen1_size); 83 } else { 84 _generations[1] = new GenerationSpec(Generation::ConcurrentMarkSweep, 85 _initial_gen1_size, _max_gen1_size); 86 } 87 88 if (_generations[0] == NULL || _generations[1] == NULL) { 89 vm_exit_during_initialization("Unable to allocate gen spec"); 90 } 91 } 92 93 void ConcurrentMarkSweepPolicy::initialize_size_policy(size_t init_eden_size, 94 size_t init_promo_size, 95 size_t init_survivor_size) { 96 double max_gc_minor_pause_sec = ((double) MaxGCMinorPauseMillis)/1000.0; 97 double max_gc_pause_sec = ((double) MaxGCPauseMillis)/1000.0; 98 _size_policy = new CMSAdaptiveSizePolicy(init_eden_size, 99 init_promo_size, 100 init_survivor_size, 101 max_gc_minor_pause_sec, 102 max_gc_pause_sec, 103 GCTimeRatio); 104 } 105 106 void ConcurrentMarkSweepPolicy::initialize_gc_policy_counters() { 107 // initialize the policy counters - 2 collectors, 3 generations 108 if (ParNewGeneration::in_use()) { 109 _gc_policy_counters = new GCPolicyCounters("ParNew:CMS", 2, 3); 110 } 111 else { 112 _gc_policy_counters = new GCPolicyCounters("Copy:CMS", 2, 3); 113 } 114 } 115 116 // Returns true if the incremental mode is enabled. 117 bool ConcurrentMarkSweepPolicy::has_soft_ended_eden() 118 { 119 return CMSIncrementalMode; 120 } 121 122 123 // 124 // ASConcurrentMarkSweepPolicy methods 125 // 126 127 void ASConcurrentMarkSweepPolicy::initialize_gc_policy_counters() { 128 129 assert(size_policy() != NULL, "A size policy is required"); 130 // initialize the policy counters - 2 collectors, 3 generations 131 if (ParNewGeneration::in_use()) { 132 _gc_policy_counters = new CMSGCAdaptivePolicyCounters("ParNew:CMS", 2, 3, 133 size_policy()); 134 } 135 else { 136 _gc_policy_counters = new CMSGCAdaptivePolicyCounters("Copy:CMS", 2, 3, 137 size_policy()); 138 } 139 }