1 /* 2 * Copyright (c) 2007, 2015, 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 "classfile/systemDictionary.hpp" 27 #include "classfile/vmSymbols.hpp" 28 #include "gc/parallel/psMemoryPool.hpp" 29 #include "oops/oop.inline.hpp" 30 #include "runtime/handles.inline.hpp" 31 #include "runtime/javaCalls.hpp" 32 #include "services/lowMemoryDetector.hpp" 33 #include "services/management.hpp" 34 #include "services/memoryManager.hpp" 35 36 PSGenerationPool::PSGenerationPool(PSOldGen* old_gen, 37 const char* name, 38 PoolType type, 39 bool support_usage_threshold) : 40 CollectedMemoryPool(name, type, old_gen->capacity_in_bytes(), 41 old_gen->reserved().byte_size(), support_usage_threshold), _old_gen(old_gen) { 42 } 43 44 MemoryUsage PSGenerationPool::get_memory_usage() { 45 size_t maxSize = (available_for_allocation() ? max_size() : 0); 46 size_t used = used_in_bytes(); 47 size_t committed = _old_gen->capacity_in_bytes(); 48 49 return MemoryUsage(initial_size(), used, committed, maxSize); 50 } 51 52 // The max size of EdenMutableSpacePool = 53 // max size of the PSYoungGen - capacity of two survivor spaces 54 // 55 // Max size of PS eden space is changing due to ergonomic. 56 // PSYoungGen, PSOldGen, Eden, Survivor spaces are all resizable. 57 // 58 EdenMutableSpacePool::EdenMutableSpacePool(PSYoungGen* young_gen, 59 MutableSpace* space, 60 const char* name, 61 PoolType type, 62 bool support_usage_threshold) : 63 CollectedMemoryPool(name, type, space->capacity_in_bytes(), 64 (young_gen->max_size() - young_gen->from_space()->capacity_in_bytes() - young_gen->to_space()->capacity_in_bytes()), 65 support_usage_threshold), 66 _young_gen(young_gen), 67 _space(space) { 68 } 69 70 MemoryUsage EdenMutableSpacePool::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_in_bytes(); 74 75 return MemoryUsage(initial_size(), used, committed, maxSize); 76 } 77 78 // The max size of SurvivorMutableSpacePool = 79 // current capacity of the from-space 80 // 81 // PS from and to survivor spaces could have different sizes. 82 // 83 SurvivorMutableSpacePool::SurvivorMutableSpacePool(PSYoungGen* young_gen, 84 const char* name, 85 PoolType type, 86 bool support_usage_threshold) : 87 CollectedMemoryPool(name, type, young_gen->from_space()->capacity_in_bytes(), 88 young_gen->from_space()->capacity_in_bytes(), 89 support_usage_threshold), _young_gen(young_gen) { 90 } 91 92 MemoryUsage SurvivorMutableSpacePool::get_memory_usage() { 93 size_t maxSize = (available_for_allocation() ? max_size() : 0); 94 size_t used = used_in_bytes(); 95 size_t committed = committed_in_bytes(); 96 return MemoryUsage(initial_size(), used, committed, maxSize); 97 }