1 /* 2 * Copyright (c) 2007, 2013, 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 void ConcurrentMarkSweepPolicy::initialize_generations() { 51 _generations = NEW_C_HEAP_ARRAY3(GenerationSpecPtr, number_of_generations(), mtGC, 0, AllocFailStrategy::RETURN_NULL); 52 if (_generations == NULL) 53 vm_exit_during_initialization("Unable to allocate gen spec"); 54 55 if (UseParNewGC) { 56 if (UseAdaptiveSizePolicy) { 57 _generations[0] = new GenerationSpec(Generation::ASParNew, 58 _initial_gen0_size, _max_gen0_size); 59 } else { 60 _generations[0] = new GenerationSpec(Generation::ParNew, 61 _initial_gen0_size, _max_gen0_size); 62 } 63 } else { 64 _generations[0] = new GenerationSpec(Generation::DefNew, 65 _initial_gen0_size, _max_gen0_size); 66 } 67 if (UseAdaptiveSizePolicy) { 68 _generations[1] = new GenerationSpec(Generation::ASConcurrentMarkSweep, 69 _initial_gen1_size, _max_gen1_size); 70 } else { 71 _generations[1] = new GenerationSpec(Generation::ConcurrentMarkSweep, 72 _initial_gen1_size, _max_gen1_size); 73 } 74 75 if (_generations[0] == NULL || _generations[1] == NULL) { 76 vm_exit_during_initialization("Unable to allocate gen spec"); 77 } 78 } 79 80 void ConcurrentMarkSweepPolicy::initialize_size_policy(size_t init_eden_size, 81 size_t init_promo_size, 82 size_t init_survivor_size) { 83 double max_gc_minor_pause_sec = ((double) MaxGCMinorPauseMillis)/1000.0; 84 double max_gc_pause_sec = ((double) MaxGCPauseMillis)/1000.0; 85 _size_policy = new CMSAdaptiveSizePolicy(init_eden_size, 86 init_promo_size, 87 init_survivor_size, 88 max_gc_minor_pause_sec, 89 max_gc_pause_sec, 90 GCTimeRatio); 91 } 92 93 void ConcurrentMarkSweepPolicy::initialize_gc_policy_counters() { 94 // initialize the policy counters - 2 collectors, 3 generations 95 if (UseParNewGC) { 96 _gc_policy_counters = new GCPolicyCounters("ParNew:CMS", 2, 3); 97 } 98 else { 99 _gc_policy_counters = new GCPolicyCounters("Copy:CMS", 2, 3); 100 } 101 } 102 103 // Returns true if the incremental mode is enabled. 104 bool ConcurrentMarkSweepPolicy::has_soft_ended_eden() 105 { 106 return CMSIncrementalMode; 107 } 108 109 110 // 111 // ASConcurrentMarkSweepPolicy methods 112 // 113 114 void ASConcurrentMarkSweepPolicy::initialize_gc_policy_counters() { 115 116 assert(size_policy() != NULL, "A size policy is required"); 117 // initialize the policy counters - 2 collectors, 3 generations 118 if (UseParNewGC) { 119 _gc_policy_counters = new CMSGCAdaptivePolicyCounters("ParNew:CMS", 2, 3, 120 size_policy()); 121 } 122 else { 123 _gc_policy_counters = new CMSGCAdaptivePolicyCounters("Copy:CMS", 2, 3, 124 size_policy()); 125 } 126 }