Mercurial > hg > truffle
annotate src/share/vm/memory/generationSpec.hpp @ 6027:8a2e5a6a19a4
7143490: G1: Remove HeapRegion::_top_at_conc_mark_count
Summary: Removed the HeapRegion::_top_at_conc_mark_count field. It is no longer needed as a result of the changes for 6888336 and 7127706. Refactored the closures that finalize and verify the liveness counting data so that common functionality was placed into a base class.
Reviewed-by: brutisso, tonyp
author | johnc |
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date | Wed, 25 Apr 2012 10:23:12 -0700 |
parents | f95d63e2154a |
children | d2a62e0f25eb |
rev | line source |
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0 | 1 /* |
1972 | 2 * Copyright (c) 2001, 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 * | |
1552
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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_MEMORY_GENERATIONSPEC_HPP |
26 #define SHARE_VM_MEMORY_GENERATIONSPEC_HPP | |
27 | |
28 #include "memory/generation.hpp" | |
29 #include "memory/permGen.hpp" | |
30 | |
0 | 31 // The specification of a generation. This class also encapsulates |
32 // some generation-specific behavior. This is done here rather than as a | |
33 // virtual function of Generation because these methods are needed in | |
34 // initialization of the Generations. | |
35 class GenerationSpec : public CHeapObj { | |
36 friend class VMStructs; | |
37 private: | |
38 Generation::Name _name; | |
39 size_t _init_size; | |
40 size_t _max_size; | |
41 | |
42 public: | |
43 GenerationSpec(Generation::Name name, size_t init_size, size_t max_size) { | |
44 _name = name; | |
45 _init_size = init_size; | |
46 _max_size = max_size; | |
47 } | |
48 | |
49 Generation* init(ReservedSpace rs, int level, GenRemSet* remset); | |
50 | |
51 // Accessors | |
52 Generation::Name name() const { return _name; } | |
53 size_t init_size() const { return _init_size; } | |
54 void set_init_size(size_t size) { _init_size = size; } | |
55 size_t max_size() const { return _max_size; } | |
56 void set_max_size(size_t size) { _max_size = size; } | |
57 | |
58 // Alignment | |
59 void align(size_t alignment) { | |
60 set_init_size(align_size_up(init_size(), alignment)); | |
61 set_max_size(align_size_up(max_size(), alignment)); | |
62 } | |
63 | |
64 // Return the number of regions contained in the generation which | |
65 // might need to be independently covered by a remembered set. | |
66 virtual int n_covered_regions() const { return 1; } | |
67 }; | |
68 | |
69 typedef GenerationSpec* GenerationSpecPtr; | |
70 | |
71 // The specification of a permanent generation. This class is very | |
72 // similar to GenerationSpec in use. Due to PermGen's not being a | |
73 // true Generation, we cannot combine the spec classes either. | |
74 class PermanentGenerationSpec : public CHeapObj { | |
75 friend class VMStructs; | |
76 private: | |
77 PermGen::Name _name; | |
78 size_t _init_size; | |
79 size_t _max_size; | |
80 size_t _read_only_size; | |
81 size_t _read_write_size; | |
82 size_t _misc_data_size; | |
83 size_t _misc_code_size; | |
84 bool _enable_shared_spaces; | |
85 | |
86 enum { | |
87 _n_spaces = 2 | |
88 }; | |
89 | |
90 public: | |
91 PermanentGenerationSpec(PermGen::Name name, size_t init_size, | |
92 size_t max_size, size_t read_only_size, | |
93 size_t read_write_size, size_t misc_data_size, | |
94 size_t misc_code_size); | |
95 | |
96 PermGen* init(ReservedSpace rs, size_t init_size, GenRemSet* remset); | |
97 | |
98 void disable_sharing() { | |
99 _enable_shared_spaces = false; | |
100 _read_only_size = 0; | |
101 _read_write_size = 0; | |
102 _misc_data_size = 0; | |
103 _misc_code_size = 0; | |
104 } | |
105 | |
106 // Accessors | |
107 PermGen::Name name() const { return _name; } | |
108 size_t init_size() const { return _init_size; } | |
109 void set_init_size(size_t size) { _init_size = size; } | |
110 | |
111 // Max size for user DOES NOT include shared spaces. | |
112 // Max size for space allocation DOES include shared spaces. | |
113 size_t max_size() const { | |
114 return _max_size + _read_only_size + _read_write_size; | |
115 } | |
116 | |
117 // Need one covered region for the main space, and one for the shared | |
118 // spaces (together). | |
119 int n_covered_regions() const { return 2; } | |
120 | |
121 void align(size_t alignment); | |
122 | |
123 size_t read_only_size() const { return _read_only_size; } | |
124 size_t read_write_size() const { return _read_write_size; } | |
125 size_t misc_data_size() const { return _misc_data_size; } | |
126 size_t misc_code_size() const { return _misc_code_size; } | |
127 bool enable_shared_spaces() const { return _enable_shared_spaces; } | |
128 }; | |
1972 | 129 |
130 #endif // SHARE_VM_MEMORY_GENERATIONSPEC_HPP |