Mercurial > hg > truffle
annotate src/share/vm/gc_implementation/parallelScavenge/psMarkSweepDecorator.hpp @ 17771:9fdaa79b0c27
8036703: Add trace event with statistics for the metaspace chunk free lists
Reviewed-by: stefank, mgerdin, coleenp, egahlin
author | ehelin |
---|---|
date | Fri, 21 Mar 2014 10:31:51 +0100 |
parents | da91efe96a93 |
children |
rev | line source |
---|---|
0 | 1 /* |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
changeset
|
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 * | |
1552
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
470
diff
changeset
|
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
470
diff
changeset
|
20 * or visit www.oracle.com if you need additional information or have any |
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
470
diff
changeset
|
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 advance_destination_decorator(); | |
63 static PSMarkSweepDecorator* destination_decorator(); | |
64 | |
65 // Accessors | |
438 | 66 MutableSpace* space() { return _space; } |
67 ObjectStartArray* start_array() { return _start_array; } | |
0 | 68 |
438 | 69 HeapWord* compaction_top() { return _compaction_top; } |
70 void set_compaction_top(HeapWord* value) { _compaction_top = value; } | |
0 | 71 |
438 | 72 size_t allowed_dead_ratio() { return _allowed_dead_ratio; } |
73 void set_allowed_dead_ratio(size_t value) { _allowed_dead_ratio = value; } | |
0 | 74 |
75 // Work methods | |
76 void adjust_pointers(); | |
77 void precompact(); | |
78 void compact(bool mangle_free_space); | |
79 }; | |
1972 | 80 |
81 #endif // SHARE_VM_GC_IMPLEMENTATION_PARALLELSCAVENGE_PSMARKSWEEPDECORATOR_HPP |