Mercurial > hg > truffle
annotate src/share/vm/gc_implementation/parallelScavenge/generationSizer.hpp @ 6725:da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
Summary: Remove PermGen, allocate meta-data in metaspace linked to class loaders, rewrite GC walking, rewrite and rename metadata to be C++ classes
Reviewed-by: jmasa, stefank, never, coleenp, kvn, brutisso, mgerdin, dholmes, jrose, twisti, roland
Contributed-by: jmasa <jon.masamitsu@oracle.com>, stefank <stefan.karlsson@oracle.com>, mgerdin <mikael.gerdin@oracle.com>, never <tom.rodriguez@oracle.com>
| author | coleenp |
|---|---|
| date | Sat, 01 Sep 2012 13:25:18 -0400 |
| parents | f95d63e2154a |
| children | 9e11762cee52 |
| rev | line source |
|---|---|
| 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 | |
| 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. | |
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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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6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
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72 size_t metaspace_size() { return MetaspaceSize; } |
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coleenp
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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 |