Thu, 14 Mar 2013 09:37:38 +0100
6733980: par compact - TraceGen1Time always shows 0.0000 seconds
Summary: Use the correct collector to retrieve accumulated gen1 trace time
Reviewed-by: johnc, jmasa
1 /*
2 * Copyright (c) 2001, 2012, Oracle and/or its affiliates. All rights reserved.
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 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
25 #ifndef SHARE_VM_GC_IMPLEMENTATION_PARALLELSCAVENGE_PSMARKSWEEPDECORATOR_HPP
26 #define SHARE_VM_GC_IMPLEMENTATION_PARALLELSCAVENGE_PSMARKSWEEPDECORATOR_HPP
28 #include "gc_implementation/shared/mutableSpace.hpp"
30 //
31 // A PSMarkSweepDecorator is used to add "ParallelScavenge" style mark sweep operations
32 // to a MutableSpace.
33 //
35 class ObjectStartArray;
37 class PSMarkSweepDecorator: public CHeapObj<mtGC> {
38 private:
39 static PSMarkSweepDecorator* _destination_decorator;
41 protected:
42 MutableSpace* _space;
43 ObjectStartArray* _start_array;
44 HeapWord* _first_dead;
45 HeapWord* _end_of_live;
46 HeapWord* _compaction_top;
47 size_t _allowed_dead_ratio;
49 bool insert_deadspace(size_t& allowed_deadspace_words, HeapWord* q,
50 size_t word_len);
52 public:
53 PSMarkSweepDecorator(MutableSpace* space, ObjectStartArray* start_array,
54 size_t allowed_dead_ratio) :
55 _space(space), _start_array(start_array),
56 _allowed_dead_ratio(allowed_dead_ratio) { }
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();
65 // Accessors
66 MutableSpace* space() { return _space; }
67 ObjectStartArray* start_array() { return _start_array; }
69 HeapWord* compaction_top() { return _compaction_top; }
70 void set_compaction_top(HeapWord* value) { _compaction_top = value; }
72 size_t allowed_dead_ratio() { return _allowed_dead_ratio; }
73 void set_allowed_dead_ratio(size_t value) { _allowed_dead_ratio = value; }
75 // Work methods
76 void adjust_pointers();
77 void precompact();
78 void compact(bool mangle_free_space);
79 };
81 #endif // SHARE_VM_GC_IMPLEMENTATION_PARALLELSCAVENGE_PSMARKSWEEPDECORATOR_HPP