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 ConcurrentMarkSweepPolicy::ConcurrentMarkSweepPolicy() { 51 initialize_all(); 52 } 53 54 void ConcurrentMarkSweepPolicy::initialize_generations() { 55 _generations = NEW_C_HEAP_ARRAY3(GenerationSpecPtr, number_of_generations(), mtGC, 0, AllocFailStrategy::RETURN_NULL); 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 }