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annotate src/share/vm/gc_implementation/g1/g1OopClosures.inline.hpp @ 3759:cfcf2ba8f3eb
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author | never |
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date | Wed, 15 Jun 2011 10:20:03 -0700 |
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342 | 1 /* |
1705 | 2 * Copyright (c) 2001, 2010, Oracle and/or its affiliates. All rights reserved. |
342 | 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. |
342 | 22 * |
23 */ | |
24 | |
1972 | 25 #ifndef SHARE_VM_GC_IMPLEMENTATION_G1_G1OOPCLOSURES_INLINE_HPP |
26 #define SHARE_VM_GC_IMPLEMENTATION_G1_G1OOPCLOSURES_INLINE_HPP | |
27 | |
28 #include "gc_implementation/g1/concurrentMark.hpp" | |
29 #include "gc_implementation/g1/g1CollectedHeap.hpp" | |
30 #include "gc_implementation/g1/g1OopClosures.hpp" | |
31 #include "gc_implementation/g1/g1RemSet.hpp" | |
32 | |
342 | 33 /* |
34 * This really ought to be an inline function, but apparently the C++ | |
35 * compiler sometimes sees fit to ignore inline declarations. Sigh. | |
36 */ | |
37 | |
38 // This must a ifdef'ed because the counting it controls is in a | |
39 // perf-critical inner loop. | |
40 #define FILTERINTOCSCLOSURE_DOHISTOGRAMCOUNT 0 | |
41 | |
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42 template <class T> inline void FilterIntoCSClosure::do_oop_nv(T* p) { |
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43 T heap_oop = oopDesc::load_heap_oop(p); |
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44 if (!oopDesc::is_null(heap_oop) && |
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45 _g1->obj_in_cs(oopDesc::decode_heap_oop_not_null(heap_oop))) { |
342 | 46 _oc->do_oop(p); |
47 #if FILTERINTOCSCLOSURE_DOHISTOGRAMCOUNT | |
1705 | 48 if (_dcto_cl != NULL) |
49 _dcto_cl->incr_count(); | |
342 | 50 #endif |
51 } | |
52 } | |
53 | |
54 #define FILTEROUTOFREGIONCLOSURE_DOHISTOGRAMCOUNT 0 | |
55 | |
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56 template <class T> inline void FilterOutOfRegionClosure::do_oop_nv(T* p) { |
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57 T heap_oop = oopDesc::load_heap_oop(p); |
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58 if (!oopDesc::is_null(heap_oop)) { |
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59 HeapWord* obj_hw = (HeapWord*)oopDesc::decode_heap_oop_not_null(heap_oop); |
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60 if (obj_hw < _r_bottom || obj_hw >= _r_end) { |
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61 _oc->do_oop(p); |
342 | 62 #if FILTEROUTOFREGIONCLOSURE_DOHISTOGRAMCOUNT |
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63 _out_of_region++; |
342 | 64 #endif |
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65 } |
342 | 66 } |
67 } | |
68 | |
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69 template <class T> inline void FilterInHeapRegionAndIntoCSClosure::do_oop_nv(T* p) { |
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70 T heap_oop = oopDesc::load_heap_oop(p); |
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71 if (!oopDesc::is_null(heap_oop) && |
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72 _g1->obj_in_cs(oopDesc::decode_heap_oop_not_null(heap_oop))) |
342 | 73 _oc->do_oop(p); |
74 } | |
75 | |
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76 template <class T> inline void FilterAndMarkInHeapRegionAndIntoCSClosure::do_oop_nv(T* p) { |
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77 T heap_oop = oopDesc::load_heap_oop(p); |
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78 if (!oopDesc::is_null(heap_oop)) { |
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79 oop obj = oopDesc::decode_heap_oop_not_null(heap_oop); |
342 | 80 HeapRegion* hr = _g1->heap_region_containing((HeapWord*) obj); |
81 if (hr != NULL) { | |
82 if (hr->in_collection_set()) | |
83 _oc->do_oop(p); | |
84 else if (!hr->is_young()) | |
85 _cm->grayRoot(obj); | |
86 } | |
87 } | |
88 } | |
89 | |
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90 // This closure is applied to the fields of the objects that have just been copied. |
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91 template <class T> inline void G1ParScanClosure::do_oop_nv(T* p) { |
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92 T heap_oop = oopDesc::load_heap_oop(p); |
342 | 93 |
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94 if (!oopDesc::is_null(heap_oop)) { |
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95 oop obj = oopDesc::decode_heap_oop_not_null(heap_oop); |
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96 if (_g1->in_cset_fast_test(obj)) { |
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97 // We're not going to even bother checking whether the object is |
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98 // already forwarded or not, as this usually causes an immediate |
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99 // stall. We'll try to prefetch the object (for write, given that |
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100 // we might need to install the forwarding reference) and we'll |
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101 // get back to it when pop it from the queue |
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102 Prefetch::write(obj->mark_addr(), 0); |
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103 Prefetch::read(obj->mark_addr(), (HeapWordSize*2)); |
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104 |
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105 // slightly paranoid test; I'm trying to catch potential |
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106 // problems before we go into push_on_queue to know where the |
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107 // problem is coming from |
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108 assert(obj == oopDesc::load_decode_heap_oop(p), |
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109 "p should still be pointing to obj"); |
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110 _par_scan_state->push_on_queue(p); |
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111 } else { |
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112 _par_scan_state->update_rs(_from, p, _par_scan_state->queue_num()); |
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113 } |
342 | 114 } |
115 } | |
1261 | 116 |
117 template <class T> inline void G1ParPushHeapRSClosure::do_oop_nv(T* p) { | |
118 T heap_oop = oopDesc::load_heap_oop(p); | |
119 | |
120 if (!oopDesc::is_null(heap_oop)) { | |
121 oop obj = oopDesc::decode_heap_oop_not_null(heap_oop); | |
122 if (_g1->in_cset_fast_test(obj)) { | |
123 Prefetch::write(obj->mark_addr(), 0); | |
124 Prefetch::read(obj->mark_addr(), (HeapWordSize*2)); | |
1705 | 125 |
126 // Place on the references queue | |
1261 | 127 _par_scan_state->push_on_queue(p); |
128 } | |
129 } | |
130 } | |
1705 | 131 |
1972 | 132 |
133 #endif // SHARE_VM_GC_IMPLEMENTATION_G1_G1OOPCLOSURES_INLINE_HPP |