Mercurial > hg > graal-compiler
annotate src/share/vm/gc_implementation/parallelScavenge/psMarkSweepDecorator.hpp @ 6197:d2a62e0f25eb
6995781: Native Memory Tracking (Phase 1)
7151532: DCmd for hotspot native memory tracking
Summary: Implementation of native memory tracking phase 1, which tracks VM native memory usage, and related DCmd
Reviewed-by: acorn, coleenp, fparain
| author | zgu |
|---|---|
| date | Thu, 28 Jun 2012 17:03:16 -0400 |
| parents | f95d63e2154a |
| children | da91efe96a93 |
| 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_PSMARKSWEEPDECORATOR_HPP |
| 26 #define SHARE_VM_GC_IMPLEMENTATION_PARALLELSCAVENGE_PSMARKSWEEPDECORATOR_HPP | |
| 27 | |
| 28 #include "gc_implementation/shared/mutableSpace.hpp" | |
| 29 | |
| 0 | 30 // |
| 31 // A PSMarkSweepDecorator is used to add "ParallelScavenge" style mark sweep operations | |
| 32 // to a MutableSpace. | |
| 33 // | |
| 34 | |
| 35 class ObjectStartArray; | |
| 36 | |
| 6197 | 37 class PSMarkSweepDecorator: public CHeapObj<mtGC> { |
| 0 | 38 private: |
| 39 static PSMarkSweepDecorator* _destination_decorator; | |
| 40 | |
| 41 protected: | |
| 42 MutableSpace* _space; | |
| 43 ObjectStartArray* _start_array; | |
| 44 HeapWord* _first_dead; | |
| 45 HeapWord* _end_of_live; | |
| 46 HeapWord* _compaction_top; | |
| 438 | 47 size_t _allowed_dead_ratio; |
| 0 | 48 |
| 438 | 49 bool insert_deadspace(size_t& allowed_deadspace_words, HeapWord* q, |
| 50 size_t word_len); | |
| 0 | 51 |
| 52 public: | |
| 53 PSMarkSweepDecorator(MutableSpace* space, ObjectStartArray* start_array, | |
| 438 | 54 size_t allowed_dead_ratio) : |
| 55 _space(space), _start_array(start_array), | |
| 56 _allowed_dead_ratio(allowed_dead_ratio) { } | |
| 0 | 57 |
| 58 // During a compacting collection, we need to collapse objects into | |
| 59 // spaces in a given order. We want to fill space A, space B, and so | |
| 60 // on. The code that controls that order is in the following methods. | |
| 61 static void set_destination_decorator_tenured(); | |
| 62 static void set_destination_decorator_perm_gen(); | |
| 63 static void advance_destination_decorator(); | |
| 64 static PSMarkSweepDecorator* destination_decorator(); | |
| 65 | |
| 66 // Accessors | |
| 438 | 67 MutableSpace* space() { return _space; } |
| 68 ObjectStartArray* start_array() { return _start_array; } | |
| 0 | 69 |
| 438 | 70 HeapWord* compaction_top() { return _compaction_top; } |
| 71 void set_compaction_top(HeapWord* value) { _compaction_top = value; } | |
| 0 | 72 |
| 438 | 73 size_t allowed_dead_ratio() { return _allowed_dead_ratio; } |
| 74 void set_allowed_dead_ratio(size_t value) { _allowed_dead_ratio = value; } | |
| 0 | 75 |
| 76 // Work methods | |
| 77 void adjust_pointers(); | |
| 78 void precompact(); | |
| 79 void compact(bool mangle_free_space); | |
| 80 }; | |
| 1972 | 81 |
| 82 #endif // SHARE_VM_GC_IMPLEMENTATION_PARALLELSCAVENGE_PSMARKSWEEPDECORATOR_HPP |