Mercurial > hg > graal-compiler
annotate src/share/vm/gc_implementation/parallelScavenge/generationSizer.hpp @ 10185:d50cc62e94ff
8012715: G1: GraphKit accesses PtrQueue::_index as int but is size_t
Summary: In graphKit INT operations were generated to access PtrQueue::_index which has type size_t. This is 64 bit on 64-bit machines. No problems occur on little endian machines as long as the index fits into 32 bit, but on big endian machines the upper part is read, which is zero. This leads to unnecessary branches to the slow path in the runtime.
Reviewed-by: twisti, johnc
Contributed-by: Martin Doerr <martin.doerr@sap.com>
author | johnc |
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date | Wed, 24 Apr 2013 14:48:43 -0700 |
parents | da91efe96a93 |
children | 9e11762cee52 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 2001, 2012, 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 | |
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7 * published by the Free Software Foundation. | |
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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). | |
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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_PARALLELSCAVENGE_GENERATIONSIZER_HPP |
26 #define SHARE_VM_GC_IMPLEMENTATION_PARALLELSCAVENGE_GENERATIONSIZER_HPP | |
27 | |
28 #include "memory/collectorPolicy.hpp" | |
29 | |
0 | 30 // There is a nice batch of tested generation sizing code in |
31 // TwoGenerationCollectorPolicy. Lets reuse it! | |
32 | |
33 class GenerationSizer : public TwoGenerationCollectorPolicy { | |
34 public: | |
35 GenerationSizer() { | |
36 // Partial init only! | |
37 initialize_flags(); | |
38 initialize_size_info(); | |
39 } | |
40 | |
41 void initialize_flags() { | |
42 // Do basic sizing work | |
43 this->TwoGenerationCollectorPolicy::initialize_flags(); | |
44 | |
45 // If the user hasn't explicitly set the number of worker | |
46 // threads, set the count. | |
10
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47 assert(UseSerialGC || |
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48 !FLAG_IS_DEFAULT(ParallelGCThreads) || |
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49 (ParallelGCThreads > 0), |
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50 "ParallelGCThreads should be set before flag initialization"); |
0 | 51 |
52 // The survivor ratio's are calculated "raw", unlike the | |
53 // default gc, which adds 2 to the ratio value. We need to | |
54 // make sure the values are valid before using them. | |
55 if (MinSurvivorRatio < 3) { | |
56 MinSurvivorRatio = 3; | |
57 } | |
58 | |
59 if (InitialSurvivorRatio < 3) { | |
60 InitialSurvivorRatio = 3; | |
61 } | |
62 } | |
63 | |
64 size_t min_young_gen_size() { return _min_gen0_size; } | |
65 size_t young_gen_size() { return _initial_gen0_size; } | |
66 size_t max_young_gen_size() { return _max_gen0_size; } | |
67 | |
68 size_t min_old_gen_size() { return _min_gen1_size; } | |
69 size_t old_gen_size() { return _initial_gen1_size; } | |
70 size_t max_old_gen_size() { return _max_gen1_size; } | |
71 | |
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72 size_t metaspace_size() { return MetaspaceSize; } |
da91efe96a93
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73 size_t max_metaspace_size() { return MaxMetaspaceSize; } |
0 | 74 }; |
1972 | 75 |
76 #endif // SHARE_VM_GC_IMPLEMENTATION_PARALLELSCAVENGE_GENERATIONSIZER_HPP |