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annotate src/share/vm/gc_implementation/g1/g1RemSet.inline.hpp @ 3977:5cc33133bc6d

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7092245: G1: Wrong format specifier in G1PrintRegionLivenessInfo header output Summary: Cast HeapRegion::GrainBytes to size_t in output statement. Reviewed-by: ysr, brutisso, pbk, tonyp
author johnc
date Wed, 21 Sep 2011 15:24:07 -0700
parents e8b0b0392037
children 441e946dc1af
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /*
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2 * Copyright (c) 2001, 2010, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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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.
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22 *
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23 */
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24
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25 #ifndef SHARE_VM_GC_IMPLEMENTATION_G1_G1REMSET_INLINE_HPP
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26 #define SHARE_VM_GC_IMPLEMENTATION_G1_G1REMSET_INLINE_HPP
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27
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28 #include "gc_implementation/g1/g1RemSet.hpp"
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29 #include "gc_implementation/g1/heapRegionRemSet.hpp"
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30 #include "oops/oop.inline.hpp"
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31
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32 inline size_t G1RemSet::n_workers() {
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33 if (_g1->workers() != NULL) {
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34 return _g1->workers()->total_workers();
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35 } else {
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36 return 1;
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37 }
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38 }
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39
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40 template <class T>
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41 inline void G1RemSet::write_ref(HeapRegion* from, T* p) {
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42 par_write_ref(from, p, 0);
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43 }
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44
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45 template <class T>
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46 inline void G1RemSet::par_write_ref(HeapRegion* from, T* p, int tid) {
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47 oop obj = oopDesc::load_decode_heap_oop(p);
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48 #ifdef ASSERT
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49 // can't do because of races
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50 // assert(obj == NULL || obj->is_oop(), "expected an oop");
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51
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52 // Do the safe subset of is_oop
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53 if (obj != NULL) {
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54 #ifdef CHECK_UNHANDLED_OOPS
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55 oopDesc* o = obj.obj();
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56 #else
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57 oopDesc* o = obj;
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58 #endif // CHECK_UNHANDLED_OOPS
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59 assert((intptr_t)o % MinObjAlignmentInBytes == 0, "not oop aligned");
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60 assert(Universe::heap()->is_in_reserved(obj), "must be in heap");
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61 }
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62 #endif // ASSERT
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63
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64 assert(from == NULL || from->is_in_reserved(p), "p is not in from");
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65
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66 HeapRegion* to = _g1->heap_region_containing(obj);
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67 if (to != NULL && from != to) {
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68 assert(to->rem_set() != NULL, "Need per-region 'into' remsets.");
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69 to->rem_set()->add_reference(p, tid);
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70 }
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71 }
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72
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73 template <class T>
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74 inline void UpdateRSOopClosure::do_oop_work(T* p) {
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75 assert(_from != NULL, "from region must be non-NULL");
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76 _rs->par_write_ref(_from, p, _worker_i);
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77 }
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78
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79 template <class T>
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80 inline void UpdateRSetImmediate::do_oop_work(T* p) {
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81 assert(_from->is_in_reserved(p), "paranoia");
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82 T heap_oop = oopDesc::load_heap_oop(p);
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83 if (!oopDesc::is_null(heap_oop) && !_from->is_survivor()) {
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84 _g1_rem_set->par_write_ref(_from, p, 0);
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85 }
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86 }
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87
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88 template <class T>
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89 inline void UpdateRSOrPushRefOopClosure::do_oop_work(T* p) {
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90 oop obj = oopDesc::load_decode_heap_oop(p);
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91 #ifdef ASSERT
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92 // can't do because of races
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93 // assert(obj == NULL || obj->is_oop(), "expected an oop");
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94
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95 // Do the safe subset of is_oop
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96 if (obj != NULL) {
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97 #ifdef CHECK_UNHANDLED_OOPS
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98 oopDesc* o = obj.obj();
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99 #else
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100 oopDesc* o = obj;
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101 #endif // CHECK_UNHANDLED_OOPS
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102 assert((intptr_t)o % MinObjAlignmentInBytes == 0, "not oop aligned");
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103 assert(Universe::heap()->is_in_reserved(obj), "must be in heap");
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104 }
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105 #endif // ASSERT
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106
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107 assert(_from != NULL, "from region must be non-NULL");
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108
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109 HeapRegion* to = _g1->heap_region_containing(obj);
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110 if (to != NULL && _from != to) {
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111 // The _record_refs_into_cset flag is true during the RSet
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112 // updating part of an evacuation pause. It is false at all
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113 // other times:
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114 // * rebuilding the rembered sets after a full GC
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115 // * during concurrent refinement.
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116 // * updating the remembered sets of regions in the collection
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117 // set in the event of an evacuation failure (when deferred
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118 // updates are enabled).
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119
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120 if (_record_refs_into_cset && to->in_collection_set()) {
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121 // We are recording references that point into the collection
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122 // set and this particular reference does exactly that...
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123 // If the referenced object has already been forwarded
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124 // to itself, we are handling an evacuation failure and
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125 // we have already visited/tried to copy this object
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126 // there is no need to retry.
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127 if (!self_forwarded(obj)) {
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128 assert(_push_ref_cl != NULL, "should not be null");
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129 // Push the reference in the refs queue of the G1ParScanThreadState
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130 // instance for this worker thread.
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131 _push_ref_cl->do_oop(p);
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132 }
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133
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134 // Deferred updates to the CSet are either discarded (in the normal case),
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135 // or processed (if an evacuation failure occurs) at the end
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136 // of the collection.
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137 // See G1RemSet::cleanup_after_oops_into_collection_set_do().
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138 } else {
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139 // We either don't care about pushing references that point into the
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140 // collection set (i.e. we're not during an evacuation pause) _or_
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parents: 1861
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141 // the reference doesn't point into the collection set. Either way
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johnc
parents: 1861
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142 // we add the reference directly to the RSet of the region containing
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parents: 1861
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143 // the referenced object.
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parents: 1861
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144 _g1_rem_set->par_write_ref(_from, p, _worker_i);
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parents: 1861
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145 }
878b57474103 6978187: G1: assert(ParallelGCThreads> 1 || n_yielded() == _hrrs->occupied()) strikes again
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parents: 1861
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146 }
878b57474103 6978187: G1: assert(ParallelGCThreads> 1 || n_yielded() == _hrrs->occupied()) strikes again
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parents: 1861
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147 }
878b57474103 6978187: G1: assert(ParallelGCThreads> 1 || n_yielded() == _hrrs->occupied()) strikes again
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parents: 1861
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148
1972
f95d63e2154a 6989984: Use standard include model for Hospot
stefank
parents: 1960
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149
f95d63e2154a 6989984: Use standard include model for Hospot
stefank
parents: 1960
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150 #endif // SHARE_VM_GC_IMPLEMENTATION_G1_G1REMSET_INLINE_HPP