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comparison src/share/vm/memory/generationSpec.cpp @ 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 2001-2005 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 # include "incls/_precompiled.incl"
26 # include "incls/_generationSpec.cpp.incl"
27
28 Generation* GenerationSpec::init(ReservedSpace rs, int level,
29 GenRemSet* remset) {
30 switch (name()) {
31 case Generation::DefNew:
32 return new DefNewGeneration(rs, init_size(), level);
33
34 case Generation::MarkSweepCompact:
35 return new TenuredGeneration(rs, init_size(), level, remset);
36
37 #ifndef SERIALGC
38 case Generation::ParNew:
39 return new ParNewGeneration(rs, init_size(), level);
40
41 case Generation::ASParNew:
42 return new ASParNewGeneration(rs,
43 init_size(),
44 init_size() /* min size */,
45 level);
46
47 case Generation::ConcurrentMarkSweep: {
48 assert(UseConcMarkSweepGC, "UseConcMarkSweepGC should be set");
49 CardTableRS* ctrs = remset->as_CardTableRS();
50 if (ctrs == NULL) {
51 vm_exit_during_initialization("Rem set incompatibility.");
52 }
53 // Otherwise
54 // The constructor creates the CMSCollector if needed,
55 // else registers with an existing CMSCollector
56
57 ConcurrentMarkSweepGeneration* g = NULL;
58 g = new ConcurrentMarkSweepGeneration(rs,
59 init_size(), level, ctrs, UseCMSAdaptiveFreeLists,
60 (FreeBlockDictionary::DictionaryChoice)CMSDictionaryChoice);
61
62 g->initialize_performance_counters();
63
64 return g;
65 }
66
67 case Generation::ASConcurrentMarkSweep: {
68 assert(UseConcMarkSweepGC, "UseConcMarkSweepGC should be set");
69 CardTableRS* ctrs = remset->as_CardTableRS();
70 if (ctrs == NULL) {
71 vm_exit_during_initialization("Rem set incompatibility.");
72 }
73 // Otherwise
74 // The constructor creates the CMSCollector if needed,
75 // else registers with an existing CMSCollector
76
77 ASConcurrentMarkSweepGeneration* g = NULL;
78 g = new ASConcurrentMarkSweepGeneration(rs,
79 init_size(), level, ctrs, UseCMSAdaptiveFreeLists,
80 (FreeBlockDictionary::DictionaryChoice)CMSDictionaryChoice);
81
82 g->initialize_performance_counters();
83
84 return g;
85 }
86 #endif // SERIALGC
87
88 default:
89 guarantee(false, "unrecognized GenerationName");
90 return NULL;
91 }
92 }
93
94
95 PermanentGenerationSpec::PermanentGenerationSpec(PermGen::Name name,
96 size_t init_size, size_t max_size,
97 size_t read_only_size, size_t read_write_size,
98 size_t misc_data_size, size_t misc_code_size) {
99 _name = name;
100 _init_size = init_size;
101
102 if (UseSharedSpaces || DumpSharedSpaces) {
103 _enable_shared_spaces = true;
104 if (UseSharedSpaces) {
105 // Override shared space sizes from those in the file.
106 FileMapInfo* mapinfo = FileMapInfo::current_info();
107 _read_only_size = mapinfo->space_capacity(CompactingPermGenGen::ro);
108 _read_write_size = mapinfo->space_capacity(CompactingPermGenGen::rw);
109 _misc_data_size = mapinfo->space_capacity(CompactingPermGenGen::md);
110 _misc_code_size = mapinfo->space_capacity(CompactingPermGenGen::mc);
111 } else {
112 _read_only_size = read_only_size;
113 _read_write_size = read_write_size;
114 _misc_data_size = misc_data_size;
115 _misc_code_size = misc_code_size;
116 }
117 } else {
118 _enable_shared_spaces = false;
119 _read_only_size = 0;
120 _read_write_size = 0;
121 _misc_data_size = 0;
122 _misc_code_size = 0;
123 }
124
125 _max_size = max_size;
126 }
127
128
129 PermGen* PermanentGenerationSpec::init(ReservedSpace rs,
130 size_t init_size,
131 GenRemSet *remset) {
132
133 // Break the reserved spaces into pieces for the permanent space
134 // and the shared spaces.
135 ReservedSpace perm_rs = rs.first_part(_max_size, UseSharedSpaces,
136 UseSharedSpaces);
137 ReservedSpace shared_rs = rs.last_part(_max_size);
138
139 if (enable_shared_spaces()) {
140 if (!perm_rs.is_reserved() ||
141 perm_rs.base() + perm_rs.size() != shared_rs.base()) {
142 FileMapInfo* mapinfo = FileMapInfo::current_info();
143 mapinfo->fail_continue("Sharing disabled - unable to "
144 "reserve address space.");
145 shared_rs.release();
146 disable_sharing();
147 }
148 }
149
150 switch (name()) {
151 case PermGen::MarkSweepCompact:
152 return new CompactingPermGen(perm_rs, shared_rs, init_size, remset, this);
153
154 #ifndef SERIALGC
155 case PermGen::MarkSweep:
156 guarantee(false, "NYI");
157 return NULL;
158
159 case PermGen::ConcurrentMarkSweep: {
160 assert(UseConcMarkSweepGC, "UseConcMarkSweepGC should be set");
161 CardTableRS* ctrs = remset->as_CardTableRS();
162 if (ctrs == NULL) {
163 vm_exit_during_initialization("RemSet/generation incompatibility.");
164 }
165 // XXXPERM
166 return new CMSPermGen(perm_rs, init_size, ctrs,
167 (FreeBlockDictionary::DictionaryChoice)CMSDictionaryChoice);
168 }
169 #endif // SERIALGC
170 default:
171 guarantee(false, "unrecognized GenerationName");
172 return NULL;
173 }
174 }
175
176
177 // Alignment
178 void PermanentGenerationSpec::align(size_t alignment) {
179 _init_size = align_size_up(_init_size, alignment);
180 _max_size = align_size_up(_max_size, alignment);
181 _read_only_size = align_size_up(_read_only_size, alignment);
182 _read_write_size = align_size_up(_read_write_size, alignment);
183 _misc_data_size = align_size_up(_misc_data_size, alignment);
184 _misc_code_size = align_size_up(_misc_code_size, alignment);
185
186 assert(enable_shared_spaces() || (_read_only_size + _read_write_size == 0),
187 "Shared space when disabled?");
188 }