1 /* 2 * Copyright (c) 2016, 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 "gc/cms/cmsGCServicabilitySupport.hpp" 26 #include "gc/cms/compactibleFreeListSpace.hpp" 27 #include "gc/cms/concurrentMarkSweepGeneration.hpp" 28 #include "gc/cms/parNewGeneration.hpp" 29 #include "gc/shared/genCollectedHeap.hpp" 30 #include "services/memoryManager.hpp" 31 #include "services/memoryPool.hpp" 32 33 class ParNewMemoryManager : public GCMemoryManager { 34 private: 35 public: 36 ParNewMemoryManager() : GCMemoryManager() {} 37 38 const char* name() { return "ParNew"; } 39 }; 40 41 class CMSMemoryManager : public GCMemoryManager { 42 private: 43 public: 44 CMSMemoryManager() : GCMemoryManager() {} 45 46 const char* name() { return "ConcurrentMarkSweep";} 47 }; 48 49 GCMemoryManager* CMSGCServicabilitySupport::create_minor_gc_manager() { 50 return new ParNewMemoryManager(); 51 } 52 53 GCMemoryManager* CMSGCServicabilitySupport::create_major_gc_manager() { 54 return new CMSMemoryManager(); 55 } 56 57 class CompactibleFreeListSpacePool : public CollectedMemoryPool { 58 private: 59 CompactibleFreeListSpace* _space; 60 public: 61 CompactibleFreeListSpacePool(CompactibleFreeListSpace* space, 62 const char* name, 63 PoolType type, 64 size_t max_size, 65 bool support_usage_threshold) : 66 CollectedMemoryPool(name, type, space->capacity(), max_size, 67 support_usage_threshold), _space(space) { 68 } 69 70 MemoryUsage get_memory_usage() { 71 size_t maxSize = (available_for_allocation() ? max_size() : 0); 72 size_t used = used_in_bytes(); 73 size_t committed = _space->capacity(); 74 75 return MemoryUsage(initial_size(), used, committed, maxSize); 76 } 77 78 size_t used_in_bytes() { 79 return _space->used(); 80 } 81 }; 82 83 void CMSGCServicabilitySupport::add_memory_pools(GrowableArray<MemoryPool*>* pools_list, 84 GCMemoryManager* minor_mgr, 85 GCMemoryManager* major_mgr) { 86 87 GenCollectedHeap* heap = GenCollectedHeap::heap(); 88 ParNewGeneration* young_gen = (ParNewGeneration*) heap->young_gen(); 89 ContiguousSpacePool* eden = new ContiguousSpacePool(young_gen->eden(), "Par Eden Space", MemoryPool::Heap, young_gen->max_eden_size(), false); 90 SurvivorContiguousSpacePool* survivor = new SurvivorContiguousSpacePool(young_gen, "Par Survivor Space", MemoryPool::Heap, young_gen->max_survivor_size(), false); 91 92 ConcurrentMarkSweepGeneration* cms = (ConcurrentMarkSweepGeneration*) heap->old_gen(); 93 CompactibleFreeListSpacePool* old = new CompactibleFreeListSpacePool(cms->cmsSpace(), "CMS Old Gen", MemoryPool::Heap, cms->reserved().byte_size(), true); 94 95 pools_list->append(eden); 96 pools_list->append(survivor); 97 pools_list->append(old); 98 99 minor_mgr->add_pool(eden); 100 major_mgr->add_pool(eden); 101 minor_mgr->add_pool(survivor); 102 major_mgr->add_pool(survivor); 103 major_mgr->add_pool(old); 104 }