Mercurial > hg > truffle
annotate src/share/vm/gc_implementation/concurrentMarkSweep/cmsPermGen.hpp @ 4980:1c7c5be93e84
More diff vs hsx24 clean up.
author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
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date | Mon, 27 Feb 2012 21:49:51 +0100 |
parents | f95d63e2154a |
children | 9f059abe8cf2 |
rev | line source |
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0 | 1 /* |
1972 | 2 * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved. |
0 | 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 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #ifndef SHARE_VM_GC_IMPLEMENTATION_CONCURRENTMARKSWEEP_CMSPERMGEN_HPP |
26 #define SHARE_VM_GC_IMPLEMENTATION_CONCURRENTMARKSWEEP_CMSPERMGEN_HPP | |
27 | |
28 #include "gc_implementation/concurrentMarkSweep/concurrentMarkSweepGeneration.hpp" | |
29 #include "memory/permGen.hpp" | |
30 | |
0 | 31 class CardTableRS; // fwd decl |
32 class ConcurrentMarkSweepGeneration; | |
33 | |
34 // A PermGen implemented with a CMS space, collected by a CMS collector. | |
35 class CMSPermGen: public PermGen { | |
36 friend class VMStructs; | |
37 | |
38 protected: | |
39 // The "generation" view. | |
40 ConcurrentMarkSweepGeneration* _gen; | |
41 | |
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42 // Override default implementation from PermGen |
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43 virtual HeapWord* request_expand_and_allocate(Generation* gen, size_t size, |
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44 GCCause::Cause prev_cause); |
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45 |
0 | 46 public: |
47 CMSPermGen(ReservedSpace rs, size_t initial_byte_size, | |
48 CardTableRS* ct, FreeBlockDictionary::DictionaryChoice); | |
49 | |
50 HeapWord* mem_allocate(size_t size); | |
51 | |
52 void compute_new_size(); | |
53 | |
54 Generation* as_gen() const { return _gen; } | |
55 }; | |
56 | |
57 // This is the "generation" view of a CMSPermGen. | |
58 class CMSPermGenGen: public ConcurrentMarkSweepGeneration { | |
59 // Abstractly, this is a subtype that gets access to protected fields. | |
60 friend class CMSPermGen; | |
61 public: | |
62 CMSPermGenGen(ReservedSpace rs, size_t initial_byte_size, | |
63 int level, CardTableRS* ct): | |
64 // See comments in the constructor for CompactibleFreeListSpace | |
65 // regarding not using adaptive free lists for a perm gen. | |
66 ConcurrentMarkSweepGeneration(rs, initial_byte_size, // MinPermHeapExapnsion | |
67 level, ct, false /* use adaptive freelists */, | |
68 (FreeBlockDictionary::DictionaryChoice)CMSDictionaryChoice) | |
69 {} | |
70 | |
71 void initialize_performance_counters(); | |
72 | |
73 const char* name() const { | |
74 return "concurrent-mark-sweep perm gen"; | |
75 } | |
76 | |
77 const char* short_name() const { | |
78 return "CMS Perm"; | |
79 } | |
80 | |
81 bool must_be_youngest() const { return false; } | |
82 bool must_be_oldest() const { return false; } | |
83 }; | |
1972 | 84 |
85 #endif // SHARE_VM_GC_IMPLEMENTATION_CONCURRENTMARKSWEEP_CMSPERMGEN_HPP |