1 /* 2 * Copyright (c) 2007, 2020, 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/parallel/psMemoryPool.hpp" 27 28 PSGenerationPool::PSGenerationPool(PSOldGen* old_gen, 29 const char* name, 30 bool support_usage_threshold) : 31 CollectedMemoryPool(name, old_gen->capacity_in_bytes(), 32 old_gen->reserved().byte_size(), support_usage_threshold), _old_gen(old_gen) { 33 } 34 35 MemoryUsage PSGenerationPool::get_memory_usage() { 36 size_t maxSize = (available_for_allocation() ? max_size() : 0); 37 size_t used = used_in_bytes(); 38 size_t committed = _old_gen->capacity_in_bytes(); 39 40 return MemoryUsage(initial_size(), used, committed, maxSize); 41 } 42 43 // The max size of EdenMutableSpacePool = 44 // max size of the PSYoungGen - capacity of two survivor spaces 45 // 46 // Max size of PS eden space is changing due to ergonomic. 47 // PSYoungGen, PSOldGen, Eden, Survivor spaces are all resizable. 48 // 49 EdenMutableSpacePool::EdenMutableSpacePool(PSYoungGen* young_gen, 50 MutableSpace* space, 51 const char* name, 52 bool support_usage_threshold) : 53 CollectedMemoryPool(name, space->capacity_in_bytes(), 54 (young_gen->max_gen_size() - 55 young_gen->from_space()->capacity_in_bytes() - 56 young_gen->to_space()->capacity_in_bytes()), 57 support_usage_threshold), 58 _young_gen(young_gen), 59 _space(space) { 60 } 61 62 MemoryUsage EdenMutableSpacePool::get_memory_usage() { 63 size_t maxSize = (available_for_allocation() ? max_size() : 0); 64 size_t used = used_in_bytes(); 65 size_t committed = _space->capacity_in_bytes(); 66 67 return MemoryUsage(initial_size(), used, committed, maxSize); 68 } 69 70 // The max size of SurvivorMutableSpacePool = 71 // current capacity of the from-space 72 // 73 // PS from and to survivor spaces could have different sizes. 74 // 75 SurvivorMutableSpacePool::SurvivorMutableSpacePool(PSYoungGen* young_gen, 76 const char* name, 77 bool support_usage_threshold) : 78 CollectedMemoryPool(name, young_gen->from_space()->capacity_in_bytes(), 79 young_gen->from_space()->capacity_in_bytes(), 80 support_usage_threshold), _young_gen(young_gen) { 81 } 82 83 MemoryUsage SurvivorMutableSpacePool::get_memory_usage() { 84 size_t maxSize = (available_for_allocation() ? max_size() : 0); 85 size_t used = used_in_bytes(); 86 size_t committed = committed_in_bytes(); 87 return MemoryUsage(initial_size(), used, committed, maxSize); 88 }