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1 /* |
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2 * Copyright (c) 2017, 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 #include "precompiled.hpp" |
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26 #include "gc/g1/g1CollectedHeap.hpp" |
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27 #include "gc/g1/g1FullGCMarker.inline.hpp" |
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28 #include "gc/g1/g1FullGCOopClosures.inline.hpp" |
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29 #include "gc/g1/g1_specialized_oop_closures.hpp" |
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30 #include "logging/logStream.hpp" |
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31 |
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32 void G1MarkAndPushClosure::do_oop(oop* p) { |
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33 do_oop_nv(p); |
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34 } |
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35 |
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36 void G1MarkAndPushClosure::do_oop(narrowOop* p) { |
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37 do_oop_nv(p); |
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38 } |
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39 |
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40 bool G1MarkAndPushClosure::do_metadata() { |
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41 return do_metadata_nv(); |
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42 } |
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43 |
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44 void G1MarkAndPushClosure::do_klass(Klass* k) { |
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45 do_klass_nv(k); |
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46 } |
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47 |
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48 void G1MarkAndPushClosure::do_cld(ClassLoaderData* cld) { |
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49 do_cld_nv(cld); |
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50 } |
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51 |
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52 G1AdjustAndRebuildClosure::G1AdjustAndRebuildClosure(uint worker_id) : |
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53 _worker_id(worker_id), |
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54 _compaction_delta(0), |
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55 _g1h(G1CollectedHeap::heap()) { } |
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56 |
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57 void G1AdjustAndRebuildClosure::update_compaction_delta(oop obj) { |
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58 if (G1ArchiveAllocator::is_open_archive_object(obj)) { |
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59 _compaction_delta = 0; |
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60 return; |
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61 } |
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62 oop forwardee = obj->forwardee(); |
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63 if (forwardee == NULL) { |
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64 // Object not moved. |
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65 _compaction_delta = 0; |
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66 } else { |
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67 // Object moved to forwardee, calculate delta. |
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68 _compaction_delta = calculate_compaction_delta(obj, forwardee); |
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69 } |
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70 } |
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71 |
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72 void G1AdjustClosure::do_oop(oop* p) { adjust_pointer(p); } |
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73 void G1AdjustClosure::do_oop(narrowOop* p) { adjust_pointer(p); } |
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74 |
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75 void G1AdjustAndRebuildClosure::do_oop(oop* p) { do_oop_nv(p); } |
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76 void G1AdjustAndRebuildClosure::do_oop(narrowOop* p) { do_oop_nv(p); } |
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77 |
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78 void G1FollowStackClosure::do_void() { _marker->drain_stack(); } |
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79 |
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80 void G1FullKeepAliveClosure::do_oop(oop* p) { do_oop_work(p); } |
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81 void G1FullKeepAliveClosure::do_oop(narrowOop* p) { do_oop_work(p); } |
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82 |
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83 G1VerifyOopClosure::G1VerifyOopClosure(VerifyOption option) : |
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84 _g1h(G1CollectedHeap::heap()), |
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85 _containing_obj(NULL), |
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86 _verify_option(option), |
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87 _cc(0), |
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88 _failures(false) { |
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89 } |
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90 |
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91 void G1VerifyOopClosure::print_object(outputStream* out, oop obj) { |
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92 #ifdef PRODUCT |
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93 Klass* k = obj->klass(); |
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94 const char* class_name = InstanceKlass::cast(k)->external_name(); |
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95 out->print_cr("class name %s", class_name); |
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96 #else // PRODUCT |
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97 obj->print_on(out); |
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98 #endif // PRODUCT |
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99 } |
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100 |
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101 template <class T> void G1VerifyOopClosure::do_oop_nv(T* p) { |
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102 T heap_oop = oopDesc::load_heap_oop(p); |
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103 if (!oopDesc::is_null(heap_oop)) { |
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104 _cc++; |
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105 oop obj = oopDesc::decode_heap_oop_not_null(heap_oop); |
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106 bool failed = false; |
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107 if (!_g1h->is_in_closed_subset(obj) || _g1h->is_obj_dead_cond(obj, _verify_option)) { |
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108 MutexLockerEx x(ParGCRareEvent_lock, |
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109 Mutex::_no_safepoint_check_flag); |
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110 LogStreamHandle(Error, gc, verify) yy; |
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111 if (!_failures) { |
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112 yy.cr(); |
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113 yy.print_cr("----------"); |
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114 } |
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115 if (!_g1h->is_in_closed_subset(obj)) { |
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116 HeapRegion* from = _g1h->heap_region_containing((HeapWord*)p); |
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117 yy.print_cr("Field " PTR_FORMAT |
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118 " of live obj " PTR_FORMAT " in region " |
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119 "[" PTR_FORMAT ", " PTR_FORMAT ")", |
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120 p2i(p), p2i(_containing_obj), |
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121 p2i(from->bottom()), p2i(from->end())); |
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122 print_object(&yy, _containing_obj); |
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123 yy.print_cr("points to obj " PTR_FORMAT " not in the heap", |
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124 p2i(obj)); |
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125 } else { |
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126 HeapRegion* from = _g1h->heap_region_containing((HeapWord*)p); |
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127 HeapRegion* to = _g1h->heap_region_containing((HeapWord*)obj); |
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128 yy.print_cr("Field " PTR_FORMAT |
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129 " of live obj " PTR_FORMAT " in region " |
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130 "[" PTR_FORMAT ", " PTR_FORMAT ")", |
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131 p2i(p), p2i(_containing_obj), |
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132 p2i(from->bottom()), p2i(from->end())); |
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133 print_object(&yy, _containing_obj); |
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134 yy.print_cr("points to dead obj " PTR_FORMAT " in region " |
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135 "[" PTR_FORMAT ", " PTR_FORMAT ")", |
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136 p2i(obj), p2i(to->bottom()), p2i(to->end())); |
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137 print_object(&yy, obj); |
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138 } |
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139 yy.print_cr("----------"); |
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140 yy.flush(); |
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141 _failures = true; |
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142 failed = true; |
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143 } |
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144 } |
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145 } |
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146 |
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147 // Generate G1 full GC specialized oop_oop_iterate functions. |
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148 SPECIALIZED_OOP_OOP_ITERATE_CLOSURES_G1FULL(ALL_KLASS_OOP_OOP_ITERATE_DEFN) |