Mercurial > hg > truffle
annotate src/share/vm/gc_implementation/parallelScavenge/generationSizer.hpp @ 2674:6ab73784566a
* BlockBegin.predecessors changed to List<BlockEnd>
* Node: add input/successor with given back edge index, allows for explicit ordering of predecessors/usages
* Graphviz: PDF output, option to omit FrameStates
* runscimark.sh: forward additional options to JVM
author | Lukas Stadler <lukas.stadler@jku.at> |
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date | Fri, 13 May 2011 15:18:41 +0200 |
parents | f95d63e2154a |
children | da91efe96a93 |
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 * | |
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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 | |
72 size_t perm_gen_size() { return PermSize; } | |
73 size_t max_perm_gen_size() { return MaxPermSize; } | |
74 }; | |
1972 | 75 |
76 #endif // SHARE_VM_GC_IMPLEMENTATION_PARALLELSCAVENGE_GENERATIONSIZER_HPP |