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comparison src/share/vm/services/psMemoryPool.hpp @ 0:a61af66fc99e jdk7-b24

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author duke
date Sat, 01 Dec 2007 00:00:00 +0000
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children c18cbe5936b8
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-1:000000000000 0:a61af66fc99e
1 /*
2 * Copyright (c) 2007 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
20 * CA 95054 USA or visit www.sun.com if you need additional information or
21 * have any 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 };