Mercurial > hg > graal-compiler
annotate src/share/vm/gc_implementation/parallelScavenge/psPermGen.hpp @ 2149:7e37af9d69ef
7011379: G1: overly long concurrent marking cycles
Summary: This changeset introduces filtering of SATB buffers at the point when they are about to be enqueued. If this filtering clears enough entries on each buffer, the buffer can then be re-used and not enqueued. This cuts down the number of SATB buffers that need to be processed by the concurrent marking threads.
Reviewed-by: johnc, ysr
| author | tonyp |
|---|---|
| date | Wed, 19 Jan 2011 09:35:17 -0500 |
| parents | f95d63e2154a |
| children | eda9eb483d29 |
| rev | line source |
|---|---|
| 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_PSPERMGEN_HPP |
| 26 #define SHARE_VM_GC_IMPLEMENTATION_PARALLELSCAVENGE_PSPERMGEN_HPP | |
| 27 | |
| 28 #include "gc_implementation/parallelScavenge/psOldGen.hpp" | |
| 29 | |
| 0 | 30 class AdaptivePaddedAverage; |
| 31 | |
| 32 class PSPermGen : public PSOldGen { | |
| 33 friend class VMStructs; | |
| 34 protected: | |
| 35 AdaptivePaddedAverage* _avg_size; // Used for sizing | |
| 36 size_t _last_used; // Amount used at last GC, used for sizing | |
| 37 | |
| 38 public: | |
| 39 // Initialize the generation. | |
| 40 PSPermGen(ReservedSpace rs, size_t alignment, size_t initial_byte_size, | |
| 41 size_t minimum_byte_size, size_t maximum_byte_size, | |
| 42 const char* gen_name, int level); | |
| 43 | |
| 44 // Permanent Gen special allocation. Uses the OldGen allocation | |
| 45 // routines, which should not be directly called on this generation. | |
| 46 HeapWord* allocate_permanent(size_t word_size); | |
| 47 | |
| 48 // Size calculation. | |
| 49 void compute_new_size(size_t used_before_collection); | |
| 50 | |
| 51 // MarkSweep code | |
| 52 virtual void precompact(); | |
| 53 | |
| 54 // Parallel old | |
| 55 virtual void move_and_update(ParCompactionManager* cm); | |
| 56 | |
| 57 virtual const char* name() const { return "PSPermGen"; } | |
| 58 }; | |
| 1972 | 59 |
| 60 #endif // SHARE_VM_GC_IMPLEMENTATION_PARALLELSCAVENGE_PSPERMGEN_HPP |