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1 /*
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2 * Copyright (c) 2007 Sun Microsystems, Inc. All Rights Reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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20 * CA 95054 USA or visit www.sun.com if you need additional information or
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21 * have any questions.
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22 *
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23 */
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24
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25 class PSGenerationPool : public CollectedMemoryPool {
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26 private:
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27 PSOldGen* _gen;
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28
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29 public:
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30 PSGenerationPool(PSOldGen* pool, const char* name, PoolType type, bool support_usage_threshold);
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31 PSGenerationPool(PSPermGen* pool, const char* name, PoolType type, bool support_usage_threshold);
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32
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33 MemoryUsage get_memory_usage();
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34 size_t used_in_bytes() { return _gen->used_in_bytes(); }
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35 size_t max_size() const { return _gen->reserved().byte_size(); }
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36 };
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37
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38 class EdenMutableSpacePool : public CollectedMemoryPool {
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39 private:
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40 PSYoungGen* _gen;
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41 MutableSpace* _space;
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42
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43 public:
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44 EdenMutableSpacePool(PSYoungGen* gen,
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45 MutableSpace* space,
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46 const char* name,
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47 PoolType type,
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48 bool support_usage_threshold);
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49
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50 MutableSpace* space() { return _space; }
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51 MemoryUsage get_memory_usage();
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52 size_t used_in_bytes() { return space()->used_in_bytes(); }
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53 size_t max_size() const {
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54 // Eden's max_size = max_size of Young Gen - the current committed size of survivor spaces
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55 return _gen->max_size() - _gen->from_space()->capacity_in_bytes() - _gen->to_space()->capacity_in_bytes();
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56 }
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57 };
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58
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59 class SurvivorMutableSpacePool : public CollectedMemoryPool {
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60 private:
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61 PSYoungGen* _gen;
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62
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63 public:
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64 SurvivorMutableSpacePool(PSYoungGen* gen,
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65 const char* name,
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66 PoolType type,
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67 bool support_usage_threshold);
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68
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69 MemoryUsage get_memory_usage();
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70
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71 size_t used_in_bytes() {
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72 return _gen->from_space()->used_in_bytes();
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73 }
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74 size_t committed_in_bytes() {
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75 return _gen->from_space()->capacity_in_bytes();
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76 }
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77 size_t max_size() const {
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78 // Return current committed size of the from-space
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79 return _gen->from_space()->capacity_in_bytes();
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80 }
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81 };
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