Mercurial > hg > truffle
annotate src/share/vm/memory/generationSpec.cpp @ 1721:413ad0331a0c
6977924: Changes for 6975078 produce build error with certain gcc versions
Summary: The changes introduced for 6975078 assign badHeapOopVal to the _allocation field in the ResourceObj class. In 32 bit linux builds with certain versions of gcc this assignment will be flagged as an error while compiling allocation.cpp. In 32 bit builds the constant value badHeapOopVal (which is cast to an intptr_t) is negative. The _allocation field is typed as an unsigned intptr_t and gcc catches this as an error.
Reviewed-by: jcoomes, ysr, phh
author | johnc |
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date | Wed, 18 Aug 2010 10:59:06 -0700 |
parents | c18cbe5936b8 |
children | f95d63e2154a |
rev | line source |
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0 | 1 /* |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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21 * questions. |
0 | 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 } |