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comparison src/share/vm/gc_implementation/g1/g1OopClosures.inline.hpp @ 342:37f87013dfd8

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6711316: Open source the Garbage-First garbage collector Summary: First mercurial integration of the code for the Garbage-First garbage collector. Reviewed-by: apetrusenko, iveresov, jmasa, sgoldman, tonyp, ysr
author ysr
date Thu, 05 Jun 2008 15:57:56 -0700
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children df6caf649ff7
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189:0b27f3512f9e 342:37f87013dfd8
1 /*
2 * Copyright 2001-2007 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
20 * CA 95054 USA or visit www.sun.com if you need additional information or
21 * have any questions.
22 *
23 */
24
25 /*
26 * This really ought to be an inline function, but apparently the C++
27 * compiler sometimes sees fit to ignore inline declarations. Sigh.
28 */
29
30 // This must a ifdef'ed because the counting it controls is in a
31 // perf-critical inner loop.
32 #define FILTERINTOCSCLOSURE_DOHISTOGRAMCOUNT 0
33
34 inline void FilterIntoCSClosure::do_oop_nv(oop* p) {
35 oop obj = *p;
36 if (obj != NULL && _g1->obj_in_cs(obj)) {
37 _oc->do_oop(p);
38 #if FILTERINTOCSCLOSURE_DOHISTOGRAMCOUNT
39 _dcto_cl->incr_count();
40 #endif
41 }
42 }
43
44 inline void FilterIntoCSClosure::do_oop(oop* p)
45 {
46 do_oop_nv(p);
47 }
48
49 #define FILTEROUTOFREGIONCLOSURE_DOHISTOGRAMCOUNT 0
50
51 inline void FilterOutOfRegionClosure::do_oop_nv(oop* p) {
52 oop obj = *p;
53 HeapWord* obj_hw = (HeapWord*)obj;
54 if (obj_hw != NULL && (obj_hw < _r_bottom || obj_hw >= _r_end)) {
55 _oc->do_oop(p);
56 #if FILTEROUTOFREGIONCLOSURE_DOHISTOGRAMCOUNT
57 _out_of_region++;
58 #endif
59 }
60 }
61
62 inline void FilterOutOfRegionClosure::do_oop(oop* p)
63 {
64 do_oop_nv(p);
65 }
66
67 inline void FilterInHeapRegionAndIntoCSClosure::do_oop_nv(oop* p) {
68 oop obj = *p;
69 if (obj != NULL && _g1->obj_in_cs(obj))
70 _oc->do_oop(p);
71 }
72
73 inline void FilterInHeapRegionAndIntoCSClosure::do_oop(oop* p)
74 {
75 do_oop_nv(p);
76 }
77
78
79 inline void FilterAndMarkInHeapRegionAndIntoCSClosure::do_oop_nv(oop* p) {
80 oop obj = *p;
81 if (obj != NULL) {
82 HeapRegion* hr = _g1->heap_region_containing((HeapWord*) obj);
83 if (hr != NULL) {
84 if (hr->in_collection_set())
85 _oc->do_oop(p);
86 else if (!hr->is_young())
87 _cm->grayRoot(obj);
88 }
89 }
90 }
91
92 inline void FilterAndMarkInHeapRegionAndIntoCSClosure::do_oop(oop* p)
93 {
94 do_oop_nv(p);
95 }
96
97 inline void G1ScanAndBalanceClosure::do_oop_nv(oop* p) {
98 RefToScanQueue* q;
99 if (ParallelGCThreads > 0) {
100 // Deal the work out equally.
101 _nq = (_nq + 1) % ParallelGCThreads;
102 q = _g1->task_queue(_nq);
103 } else {
104 q = _g1->task_queue(0);
105 }
106 bool nooverflow = q->push(p);
107 guarantee(nooverflow, "Overflow during poplularity region processing");
108 }
109
110 inline void G1ScanAndBalanceClosure::do_oop(oop* p) {
111 do_oop_nv(p);
112 }