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comparison: src/share/vm/gc_implementation/concurrentMarkSweep/cmsCollectorPolicy.cpp
src/share/vm/gc_implementation/concurrentMarkSweep/cmsCollectorPolicy.cpp
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| 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_alignments() { | |
| 51 _space_alignment = _gen_alignment = (uintx)Generation::GenGrain; | |
| 52 _heap_alignment = compute_heap_alignment(); | |
| 53 } | |
| 54 | |
| 55 void ConcurrentMarkSweepPolicy::initialize_generations() { | |
| 56 _generations = NEW_C_HEAP_ARRAY3(GenerationSpecPtr, number_of_generations(), mtGC, 0, AllocFailStrategy::RETURN_NULL); | |
| 57 if (_generations == NULL) | |
| 58 vm_exit_during_initialization("Unable to allocate gen spec"); | |
| 59 | |
| 60 if (UseParNewGC) { | |
| 61 if (UseAdaptiveSizePolicy) { | |
| 62 _generations[0] = new GenerationSpec(Generation::ASParNew, | |
| 63 _initial_gen0_size, _max_gen0_size); | |
| 64 } else { | |
| 65 _generations[0] = new GenerationSpec(Generation::ParNew, | |
| 66 _initial_gen0_size, _max_gen0_size); | |
| 67 } | |
| 68 } else { | |
| 69 _generations[0] = new GenerationSpec(Generation::DefNew, | |
| 70 _initial_gen0_size, _max_gen0_size); | |
| 71 } | |
| 72 if (UseAdaptiveSizePolicy) { | |
| 73 _generations[1] = new GenerationSpec(Generation::ASConcurrentMarkSweep, | |
| 74 _initial_gen1_size, _max_gen1_size); | |
| 75 } else { | |
| 76 _generations[1] = new GenerationSpec(Generation::ConcurrentMarkSweep, | |
| 77 _initial_gen1_size, _max_gen1_size); | |
| 78 } | |
| 79 | |
| 80 if (_generations[0] == NULL || _generations[1] == NULL) { | |
| 81 vm_exit_during_initialization("Unable to allocate gen spec"); | |
| 82 } | |
| 83 } | |
| 84 | |
| 85 void ConcurrentMarkSweepPolicy::initialize_size_policy(size_t init_eden_size, | |
| 86 size_t init_promo_size, | |
| 87 size_t init_survivor_size) { | |
| 88 double max_gc_minor_pause_sec = ((double) MaxGCMinorPauseMillis)/1000.0; | |
| 89 double max_gc_pause_sec = ((double) MaxGCPauseMillis)/1000.0; | |
| 90 _size_policy = new CMSAdaptiveSizePolicy(init_eden_size, | |
| 91 init_promo_size, | |
| 92 init_survivor_size, | |
| 93 max_gc_minor_pause_sec, | |
| 94 max_gc_pause_sec, | |
| 95 GCTimeRatio); | |
| 96 } | |
| 97 | |
| 98 void ConcurrentMarkSweepPolicy::initialize_gc_policy_counters() { | |
| 99 // initialize the policy counters - 2 collectors, 3 generations | |
| 100 if (UseParNewGC) { | |
| 101 _gc_policy_counters = new GCPolicyCounters("ParNew:CMS", 2, 3); | |
| 102 } | |
| 103 else { | |
| 104 _gc_policy_counters = new GCPolicyCounters("Copy:CMS", 2, 3); | |
| 105 } | |
| 106 } | |
| 107 | |
| 108 // Returns true if the incremental mode is enabled. | |
| 109 bool ConcurrentMarkSweepPolicy::has_soft_ended_eden() | |
| 110 { | |
| 111 return CMSIncrementalMode; | |
| 112 } | |
| 113 | |
| 114 | |
| 115 // | |
| 116 // ASConcurrentMarkSweepPolicy methods | |
| 117 // | |
| 118 | |
| 119 void ASConcurrentMarkSweepPolicy::initialize_gc_policy_counters() { | |
| 120 | |
| 121 assert(size_policy() != NULL, "A size policy is required"); | |
| 122 // initialize the policy counters - 2 collectors, 3 generations | |
| 123 if (UseParNewGC) { | |
| 124 _gc_policy_counters = new CMSGCAdaptivePolicyCounters("ParNew:CMS", 2, 3, | |
| 125 size_policy()); | |
| 126 } | |
| 127 else { | |
| 128 _gc_policy_counters = new CMSGCAdaptivePolicyCounters("Copy:CMS", 2, 3, | |
| 129 size_policy()); | |
| 130 } | |
| 131 } |
