1 /* 2 * Copyright (c) 2007, 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 class PSGenerationPool : public CollectedMemoryPool { 26 private: 27 PSOldGen* _gen; 28 29 public: 30 PSGenerationPool(PSOldGen* pool, const char* name, PoolType type, bool support_usage_threshold); 31 PSGenerationPool(PSPermGen* pool, const char* name, PoolType type, bool support_usage_threshold); 32 33 MemoryUsage get_memory_usage(); 34 size_t used_in_bytes() { return _gen->used_in_bytes(); } 35 size_t max_size() const { return _gen->reserved().byte_size(); } 36 }; 37 38 class EdenMutableSpacePool : public CollectedMemoryPool { 39 private: 40 PSYoungGen* _gen; 41 MutableSpace* _space; 42 43 public: 44 EdenMutableSpacePool(PSYoungGen* gen, 45 MutableSpace* space, 46 const char* name, 47 PoolType type, 48 bool support_usage_threshold); 49 50 MutableSpace* space() { return _space; } 51 MemoryUsage get_memory_usage(); 52 size_t used_in_bytes() { return space()->used_in_bytes(); } 53 size_t max_size() const { 54 // Eden's max_size = max_size of Young Gen - the current committed size of survivor spaces 55 return _gen->max_size() - _gen->from_space()->capacity_in_bytes() - _gen->to_space()->capacity_in_bytes(); 56 } 57 }; 58 59 class SurvivorMutableSpacePool : public CollectedMemoryPool { 60 private: 61 PSYoungGen* _gen; 62 63 public: 64 SurvivorMutableSpacePool(PSYoungGen* gen, 65 const char* name, 66 PoolType type, 67 bool support_usage_threshold); 68 69 MemoryUsage get_memory_usage(); 70 71 size_t used_in_bytes() { 72 return _gen->from_space()->used_in_bytes(); 73 } 74 size_t committed_in_bytes() { 75 return _gen->from_space()->capacity_in_bytes(); 76 } 77 size_t max_size() const { 78 // Return current committed size of the from-space 79 return _gen->from_space()->capacity_in_bytes(); 80 } 81 };