1/* 2 * Copyright 1997-2006 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# include "incls/_precompiled.incl" 26# include "incls/_instanceRefKlass.cpp.incl" 27
| 1/* 2 * Copyright 1997-2006 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# include "incls/_precompiled.incl" 26# include "incls/_instanceRefKlass.cpp.incl" 27
|
28void instanceRefKlass::oop_follow_contents(oop obj) { 29 oop* referent_addr = java_lang_ref_Reference::referent_addr(obj); 30 oop referent = *referent_addr;
| 28template <class T> 29static void specialized_oop_follow_contents(instanceRefKlass* ref, oop obj) { 30 T* referent_addr = (T*)java_lang_ref_Reference::referent_addr(obj); 31 oop referent = oopDesc::load_decode_heap_oop(referent_addr);
|
31 debug_only( 32 if(TraceReferenceGC && PrintGCDetails) {
| 32 debug_only( 33 if(TraceReferenceGC && PrintGCDetails) {
|
33 gclog_or_tty->print_cr("instanceRefKlass::oop_follow_contents " INTPTR_FORMAT, (address)obj);
| 34 gclog_or_tty->print_cr("instanceRefKlass::oop_follow_contents " INTPTR_FORMAT, obj);
|
34 } 35 ) 36 if (referent != NULL) { 37 if (!referent->is_gc_marked() && 38 MarkSweep::ref_processor()->
| 35 } 36 ) 37 if (referent != NULL) { 38 if (!referent->is_gc_marked() && 39 MarkSweep::ref_processor()->
|
39 discover_reference(obj, reference_type())) {
| 40 discover_reference(obj, ref->reference_type())) {
|
40 // reference already enqueued, referent will be traversed later
| 41 // reference already enqueued, referent will be traversed later
|
41 instanceKlass::oop_follow_contents(obj);
| 42 ref->instanceKlass::oop_follow_contents(obj);
|
42 debug_only( 43 if(TraceReferenceGC && PrintGCDetails) {
| 43 debug_only( 44 if(TraceReferenceGC && PrintGCDetails) {
|
44 gclog_or_tty->print_cr(" Non NULL enqueued " INTPTR_FORMAT, (address)obj);
| 45 gclog_or_tty->print_cr(" Non NULL enqueued " INTPTR_FORMAT, obj);
|
45 } 46 ) 47 return; 48 } else { 49 // treat referent as normal oop 50 debug_only( 51 if(TraceReferenceGC && PrintGCDetails) {
| 46 } 47 ) 48 return; 49 } else { 50 // treat referent as normal oop 51 debug_only( 52 if(TraceReferenceGC && PrintGCDetails) {
|
52 gclog_or_tty->print_cr(" Non NULL normal " INTPTR_FORMAT, (address)obj);
| 53 gclog_or_tty->print_cr(" Non NULL normal " INTPTR_FORMAT, obj);
|
53 } 54 ) 55 MarkSweep::mark_and_push(referent_addr); 56 } 57 } 58 // treat next as normal oop. next is a link in the pending list.
| 54 } 55 ) 56 MarkSweep::mark_and_push(referent_addr); 57 } 58 } 59 // treat next as normal oop. next is a link in the pending list.
|
59 oop* next_addr = java_lang_ref_Reference::next_addr(obj);
| 60 T* next_addr = (T*)java_lang_ref_Reference::next_addr(obj);
|
60 debug_only( 61 if(TraceReferenceGC && PrintGCDetails) { 62 gclog_or_tty->print_cr(" Process next as normal " INTPTR_FORMAT, next_addr); 63 } 64 ) 65 MarkSweep::mark_and_push(next_addr);
| 61 debug_only( 62 if(TraceReferenceGC && PrintGCDetails) { 63 gclog_or_tty->print_cr(" Process next as normal " INTPTR_FORMAT, next_addr); 64 } 65 ) 66 MarkSweep::mark_and_push(next_addr);
|
66 instanceKlass::oop_follow_contents(obj);
| 67 ref->instanceKlass::oop_follow_contents(obj);
|
67} 68
| 68} 69
|
| 70void instanceRefKlass::oop_follow_contents(oop obj) { 71 if (UseCompressedOops) { 72 specialized_oop_follow_contents<narrowOop>(this, obj); 73 } else { 74 specialized_oop_follow_contents<oop>(this, obj); 75 } 76} 77
|
69#ifndef SERIALGC
| 78#ifndef SERIALGC
|
70void instanceRefKlass::oop_follow_contents(ParCompactionManager* cm, 71 oop obj) { 72 oop* referent_addr = java_lang_ref_Reference::referent_addr(obj); 73 oop referent = *referent_addr;
| 79template <class T> 80static void specialized_oop_follow_contents(instanceRefKlass* ref, 81 ParCompactionManager* cm, 82 oop obj) { 83 T* referent_addr = (T*)java_lang_ref_Reference::referent_addr(obj); 84 oop referent = oopDesc::load_decode_heap_oop(referent_addr);
|
74 debug_only( 75 if(TraceReferenceGC && PrintGCDetails) {
| 85 debug_only( 86 if(TraceReferenceGC && PrintGCDetails) {
|
76 gclog_or_tty->print_cr("instanceRefKlass::oop_follow_contents " INTPTR_FORMAT, (address)obj);
| 87 gclog_or_tty->print_cr("instanceRefKlass::oop_follow_contents " INTPTR_FORMAT, obj);
|
77 } 78 ) 79 if (referent != NULL) { 80 if (PSParallelCompact::mark_bitmap()->is_unmarked(referent) && 81 PSParallelCompact::ref_processor()->
| 88 } 89 ) 90 if (referent != NULL) { 91 if (PSParallelCompact::mark_bitmap()->is_unmarked(referent) && 92 PSParallelCompact::ref_processor()->
|
82 discover_reference(obj, reference_type())) {
| 93 discover_reference(obj, ref->reference_type())) {
|
83 // reference already enqueued, referent will be traversed later
| 94 // reference already enqueued, referent will be traversed later
|
84 instanceKlass::oop_follow_contents(cm, obj);
| 95 ref->instanceKlass::oop_follow_contents(cm, obj);
|
85 debug_only( 86 if(TraceReferenceGC && PrintGCDetails) {
| 96 debug_only( 97 if(TraceReferenceGC && PrintGCDetails) {
|
87 gclog_or_tty->print_cr(" Non NULL enqueued " INTPTR_FORMAT, (address)obj);
| 98 gclog_or_tty->print_cr(" Non NULL enqueued " INTPTR_FORMAT, obj);
|
88 } 89 ) 90 return; 91 } else { 92 // treat referent as normal oop 93 debug_only( 94 if(TraceReferenceGC && PrintGCDetails) {
| 99 } 100 ) 101 return; 102 } else { 103 // treat referent as normal oop 104 debug_only( 105 if(TraceReferenceGC && PrintGCDetails) {
|
95 gclog_or_tty->print_cr(" Non NULL normal " INTPTR_FORMAT, (address)obj);
| 106 gclog_or_tty->print_cr(" Non NULL normal " INTPTR_FORMAT, obj);
|
96 } 97 ) 98 PSParallelCompact::mark_and_push(cm, referent_addr); 99 } 100 } 101 // treat next as normal oop. next is a link in the pending list.
| 107 } 108 ) 109 PSParallelCompact::mark_and_push(cm, referent_addr); 110 } 111 } 112 // treat next as normal oop. next is a link in the pending list.
|
102 oop* next_addr = java_lang_ref_Reference::next_addr(obj);
| 113 T* next_addr = (T*)java_lang_ref_Reference::next_addr(obj);
|
103 debug_only( 104 if(TraceReferenceGC && PrintGCDetails) { 105 gclog_or_tty->print_cr(" Process next as normal " INTPTR_FORMAT, next_addr); 106 } 107 ) 108 PSParallelCompact::mark_and_push(cm, next_addr);
| 114 debug_only( 115 if(TraceReferenceGC && PrintGCDetails) { 116 gclog_or_tty->print_cr(" Process next as normal " INTPTR_FORMAT, next_addr); 117 } 118 ) 119 PSParallelCompact::mark_and_push(cm, next_addr);
|
109 instanceKlass::oop_follow_contents(cm, obj);
| 120 ref->instanceKlass::oop_follow_contents(cm, obj);
|
110}
| 121}
|
| 122 123void instanceRefKlass::oop_follow_contents(ParCompactionManager* cm, 124 oop obj) { 125 if (UseCompressedOops) { 126 specialized_oop_follow_contents<narrowOop>(this, cm, obj); 127 } else { 128 specialized_oop_follow_contents<oop>(this, cm, obj); 129 } 130}
|
111#endif // SERIALGC 112
| 131#endif // SERIALGC 132
|
113 114int instanceRefKlass::oop_adjust_pointers(oop obj) { 115 int size = size_helper(); 116 instanceKlass::oop_adjust_pointers(obj); 117 118 oop* referent_addr = java_lang_ref_Reference::referent_addr(obj); 119 MarkSweep::adjust_pointer(referent_addr); 120 oop* next_addr = java_lang_ref_Reference::next_addr(obj); 121 MarkSweep::adjust_pointer(next_addr); 122 oop* discovered_addr = java_lang_ref_Reference::discovered_addr(obj); 123 MarkSweep::adjust_pointer(discovered_addr); 124
| |
125#ifdef ASSERT
| 133#ifdef ASSERT
|
| 134template <class T> void trace_reference_gc(const char *s, oop obj, 135 T* referent_addr, 136 T* next_addr, 137 T* discovered_addr) {
|
126 if(TraceReferenceGC && PrintGCDetails) {
| 138 if(TraceReferenceGC && PrintGCDetails) {
|
127 gclog_or_tty->print_cr("instanceRefKlass::oop_adjust_pointers obj " 128 INTPTR_FORMAT, (address)obj);
| 139 gclog_or_tty->print_cr("%s obj " INTPTR_FORMAT, s, (address)obj);
|
129 gclog_or_tty->print_cr(" referent_addr/* " INTPTR_FORMAT " / "
| 140 gclog_or_tty->print_cr(" referent_addr/* " INTPTR_FORMAT " / "
|
130 INTPTR_FORMAT, referent_addr, 131 referent_addr ? (address)*referent_addr : NULL);
| 141 INTPTR_FORMAT, referent_addr, 142 referent_addr ? 143 (address)oopDesc::load_decode_heap_oop(referent_addr) : NULL);
|
132 gclog_or_tty->print_cr(" next_addr/* " INTPTR_FORMAT " / "
| 144 gclog_or_tty->print_cr(" next_addr/* " INTPTR_FORMAT " / "
|
133 INTPTR_FORMAT, next_addr, 134 next_addr ? (address)*next_addr : NULL);
| 145 INTPTR_FORMAT, next_addr, 146 next_addr ? (address)oopDesc::load_decode_heap_oop(next_addr) : NULL);
|
135 gclog_or_tty->print_cr(" discovered_addr/* " INTPTR_FORMAT " / "
| 147 gclog_or_tty->print_cr(" discovered_addr/* " INTPTR_FORMAT " / "
|
136 INTPTR_FORMAT, discovered_addr, 137 discovered_addr ? (address)*discovered_addr : NULL);
| 148 INTPTR_FORMAT, discovered_addr, 149 discovered_addr ? 150 (address)oopDesc::load_decode_heap_oop(discovered_addr) : NULL);
|
138 }
| 151 }
|
| 152}
|
139#endif 140
| 153#endif 154
|
| 155template <class T> void specialized_oop_adjust_pointers(instanceRefKlass *ref, oop obj) { 156 T* referent_addr = (T*)java_lang_ref_Reference::referent_addr(obj); 157 MarkSweep::adjust_pointer(referent_addr); 158 T* next_addr = (T*)java_lang_ref_Reference::next_addr(obj); 159 MarkSweep::adjust_pointer(next_addr); 160 T* discovered_addr = (T*)java_lang_ref_Reference::discovered_addr(obj); 161 MarkSweep::adjust_pointer(discovered_addr); 162 debug_only(trace_reference_gc("instanceRefKlass::oop_adjust_pointers", obj, 163 referent_addr, next_addr, discovered_addr);) 164} 165 166int instanceRefKlass::oop_adjust_pointers(oop obj) { 167 int size = size_helper(); 168 instanceKlass::oop_adjust_pointers(obj); 169 170 if (UseCompressedOops) { 171 specialized_oop_adjust_pointers<narrowOop>(this, obj); 172 } else { 173 specialized_oop_adjust_pointers<oop>(this, obj); 174 }
|
141 return size; 142} 143
| 175 return size; 176} 177
|
144#define InstanceRefKlass_OOP_OOP_ITERATE_DEFN(OopClosureType, nv_suffix) \ 145 \ 146int instanceRefKlass:: \ 147oop_oop_iterate##nv_suffix(oop obj, OopClosureType* closure) { \ 148 /* Get size before changing pointers */ \ 149 SpecializationStats::record_iterate_call##nv_suffix(SpecializationStats::irk);\ 150 \ 151 int size = instanceKlass::oop_oop_iterate##nv_suffix(obj, closure); \ 152 \ 153 oop* referent_addr = java_lang_ref_Reference::referent_addr(obj); \ 154 oop referent = *referent_addr; \ 155 if (referent != NULL) { \
| 178#define InstanceRefKlass_SPECIALIZED_OOP_ITERATE(T, nv_suffix, contains) \ 179 T* referent_addr = (T*)java_lang_ref_Reference::referent_addr(obj); \ 180 oop referent = oopDesc::load_decode_heap_oop(referent_addr); \ 181 if (referent != NULL && contains(referent_addr)) { \
|
156 ReferenceProcessor* rp = closure->_ref_processor; \ 157 if (!referent->is_gc_marked() && (rp != NULL) && \
| 182 ReferenceProcessor* rp = closure->_ref_processor; \ 183 if (!referent->is_gc_marked() && (rp != NULL) && \
|
158 rp->discover_reference(obj, reference_type())) { \
| 184 rp->discover_reference(obj, reference_type())) { \
|
159 return size; \ 160 } else { \ 161 /* treat referent as normal oop */ \ 162 SpecializationStats::record_do_oop_call##nv_suffix(SpecializationStats::irk);\ 163 closure->do_oop##nv_suffix(referent_addr); \ 164 } \ 165 } \
| 185 return size; \ 186 } else { \ 187 /* treat referent as normal oop */ \ 188 SpecializationStats::record_do_oop_call##nv_suffix(SpecializationStats::irk);\ 189 closure->do_oop##nv_suffix(referent_addr); \ 190 } \ 191 } \
|
166 \
| |
167 /* treat next as normal oop */ \
| 192 /* treat next as normal oop */ \
|
168 oop* next_addr = java_lang_ref_Reference::next_addr(obj); \ 169 SpecializationStats::record_do_oop_call##nv_suffix(SpecializationStats::irk); \ 170 closure->do_oop##nv_suffix(next_addr); \
| 193 T* next_addr = (T*)java_lang_ref_Reference::next_addr(obj); \ 194 if (contains(next_addr)) { \ 195 SpecializationStats::record_do_oop_call##nv_suffix(SpecializationStats::irk); \ 196 closure->do_oop##nv_suffix(next_addr); \ 197 } \
|
171 return size; \
| 198 return size; \
|
| 199 200 201template <class T> bool contains(T *t) { return true; } 202 203// Macro to define instanceRefKlass::oop_oop_iterate for virtual/nonvirtual for 204// all closures. Macros calling macros above for each oop size. 205 206#define InstanceRefKlass_OOP_OOP_ITERATE_DEFN(OopClosureType, nv_suffix) \ 207 \ 208int instanceRefKlass:: \ 209oop_oop_iterate##nv_suffix(oop obj, OopClosureType* closure) { \ 210 /* Get size before changing pointers */ \ 211 SpecializationStats::record_iterate_call##nv_suffix(SpecializationStats::irk);\ 212 \ 213 int size = instanceKlass::oop_oop_iterate##nv_suffix(obj, closure); \ 214 \ 215 if (UseCompressedOops) { \ 216 InstanceRefKlass_SPECIALIZED_OOP_ITERATE(narrowOop, nv_suffix, contains); \ 217 } else { \ 218 InstanceRefKlass_SPECIALIZED_OOP_ITERATE(oop, nv_suffix, contains); \ 219 } \
|
172} 173 174#define InstanceRefKlass_OOP_OOP_ITERATE_DEFN_m(OopClosureType, nv_suffix) \ 175 \ 176int instanceRefKlass:: \ 177oop_oop_iterate##nv_suffix##_m(oop obj, \ 178 OopClosureType* closure, \ 179 MemRegion mr) { \ 180 SpecializationStats::record_iterate_call##nv_suffix(SpecializationStats::irk);\ 181 \ 182 int size = instanceKlass::oop_oop_iterate##nv_suffix##_m(obj, closure, mr); \
| 220} 221 222#define InstanceRefKlass_OOP_OOP_ITERATE_DEFN_m(OopClosureType, nv_suffix) \ 223 \ 224int instanceRefKlass:: \ 225oop_oop_iterate##nv_suffix##_m(oop obj, \ 226 OopClosureType* closure, \ 227 MemRegion mr) { \ 228 SpecializationStats::record_iterate_call##nv_suffix(SpecializationStats::irk);\ 229 \ 230 int size = instanceKlass::oop_oop_iterate##nv_suffix##_m(obj, closure, mr); \
|
183 \ 184 oop* referent_addr = java_lang_ref_Reference::referent_addr(obj); \ 185 oop referent = *referent_addr; \ 186 if (referent != NULL && mr.contains(referent_addr)) { \ 187 ReferenceProcessor* rp = closure->_ref_processor; \ 188 if (!referent->is_gc_marked() && (rp != NULL) && \ 189 rp->discover_reference(obj, reference_type())) { \ 190 return size; \ 191 } else { \ 192 /* treat referent as normal oop */ \ 193 SpecializationStats::record_do_oop_call##nv_suffix(SpecializationStats::irk);\ 194 closure->do_oop##nv_suffix(referent_addr); \ 195 } \
| 231 if (UseCompressedOops) { \ 232 InstanceRefKlass_SPECIALIZED_OOP_ITERATE(narrowOop, nv_suffix, mr.contains); \ 233 } else { \ 234 InstanceRefKlass_SPECIALIZED_OOP_ITERATE(oop, nv_suffix, mr.contains); \
|
196 } \
| 235 } \
|
197 \ 198 /* treat next as normal oop */ \ 199 oop* next_addr = java_lang_ref_Reference::next_addr(obj); \ 200 if (mr.contains(next_addr)) { \ 201 SpecializationStats::record_do_oop_call##nv_suffix(SpecializationStats::irk);\ 202 closure->do_oop##nv_suffix(next_addr); \ 203 } \ 204 return size; \
| |
205} 206 207ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceRefKlass_OOP_OOP_ITERATE_DEFN) 208ALL_OOP_OOP_ITERATE_CLOSURES_3(InstanceRefKlass_OOP_OOP_ITERATE_DEFN) 209ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceRefKlass_OOP_OOP_ITERATE_DEFN_m) 210ALL_OOP_OOP_ITERATE_CLOSURES_3(InstanceRefKlass_OOP_OOP_ITERATE_DEFN_m) 211
| 236} 237 238ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceRefKlass_OOP_OOP_ITERATE_DEFN) 239ALL_OOP_OOP_ITERATE_CLOSURES_3(InstanceRefKlass_OOP_OOP_ITERATE_DEFN) 240ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceRefKlass_OOP_OOP_ITERATE_DEFN_m) 241ALL_OOP_OOP_ITERATE_CLOSURES_3(InstanceRefKlass_OOP_OOP_ITERATE_DEFN_m) 242
|
212
| |
213#ifndef SERIALGC
| 243#ifndef SERIALGC
|
214void instanceRefKlass::oop_copy_contents(PSPromotionManager* pm, oop obj) {
| 244template <class T> 245void specialized_oop_copy_contents(instanceRefKlass *ref, 246 PSPromotionManager* pm, oop obj) {
|
215 assert(!pm->depth_first(), "invariant");
| 247 assert(!pm->depth_first(), "invariant");
|
216 oop* referent_addr = java_lang_ref_Reference::referent_addr(obj); 217 if (PSScavenge::should_scavenge(*referent_addr)) {
| 248 T* referent_addr = (T*)java_lang_ref_Reference::referent_addr(obj); 249 if (PSScavenge::should_scavenge(referent_addr)) {
|
218 ReferenceProcessor* rp = PSScavenge::reference_processor();
| 250 ReferenceProcessor* rp = PSScavenge::reference_processor();
|
219 if (rp->discover_reference(obj, reference_type())) {
| 251 if (rp->discover_reference(obj, ref->reference_type())) {
|
220 // reference already enqueued, referent and next will be traversed later
| 252 // reference already enqueued, referent and next will be traversed later
|
221 instanceKlass::oop_copy_contents(pm, obj);
| 253 ref->instanceKlass::oop_copy_contents(pm, obj);
|
222 return; 223 } else { 224 // treat referent as normal oop 225 pm->claim_or_forward_breadth(referent_addr); 226 } 227 } 228 // treat next as normal oop
| 254 return; 255 } else { 256 // treat referent as normal oop 257 pm->claim_or_forward_breadth(referent_addr); 258 } 259 } 260 // treat next as normal oop
|
229 oop* next_addr = java_lang_ref_Reference::next_addr(obj); 230 if (PSScavenge::should_scavenge(*next_addr)) {
| 261 T* next_addr = (T*)java_lang_ref_Reference::next_addr(obj); 262 if (PSScavenge::should_scavenge(next_addr)) {
|
231 pm->claim_or_forward_breadth(next_addr); 232 }
| 263 pm->claim_or_forward_breadth(next_addr); 264 }
|
233 instanceKlass::oop_copy_contents(pm, obj);
| 265 ref->instanceKlass::oop_copy_contents(pm, obj);
|
234} 235
| 266} 267
|
236void instanceRefKlass::oop_push_contents(PSPromotionManager* pm, oop obj) {
| 268void instanceRefKlass::oop_copy_contents(PSPromotionManager* pm, oop obj) { 269 if (UseCompressedOops) { 270 specialized_oop_copy_contents<narrowOop>(this, pm, obj); 271 } else { 272 specialized_oop_copy_contents<oop>(this, pm, obj); 273 } 274} 275 276template <class T> 277void specialized_oop_push_contents(instanceRefKlass *ref, 278 PSPromotionManager* pm, oop obj) {
|
237 assert(pm->depth_first(), "invariant");
| 279 assert(pm->depth_first(), "invariant");
|
238 oop* referent_addr = java_lang_ref_Reference::referent_addr(obj); 239 if (PSScavenge::should_scavenge(*referent_addr)) {
| 280 T* referent_addr = (T*)java_lang_ref_Reference::referent_addr(obj); 281 if (PSScavenge::should_scavenge(referent_addr)) {
|
240 ReferenceProcessor* rp = PSScavenge::reference_processor();
| 282 ReferenceProcessor* rp = PSScavenge::reference_processor();
|
241 if (rp->discover_reference(obj, reference_type())) {
| 283 if (rp->discover_reference(obj, ref->reference_type())) {
|
242 // reference already enqueued, referent and next will be traversed later
| 284 // reference already enqueued, referent and next will be traversed later
|
243 instanceKlass::oop_push_contents(pm, obj);
| 285 ref->instanceKlass::oop_push_contents(pm, obj);
|
244 return; 245 } else { 246 // treat referent as normal oop 247 pm->claim_or_forward_depth(referent_addr); 248 } 249 } 250 // treat next as normal oop
| 286 return; 287 } else { 288 // treat referent as normal oop 289 pm->claim_or_forward_depth(referent_addr); 290 } 291 } 292 // treat next as normal oop
|
251 oop* next_addr = java_lang_ref_Reference::next_addr(obj); 252 if (PSScavenge::should_scavenge(*next_addr)) {
| 293 T* next_addr = (T*)java_lang_ref_Reference::next_addr(obj); 294 if (PSScavenge::should_scavenge(next_addr)) {
|
253 pm->claim_or_forward_depth(next_addr); 254 }
| 295 pm->claim_or_forward_depth(next_addr); 296 }
|
255 instanceKlass::oop_push_contents(pm, obj);
| 297 ref->instanceKlass::oop_push_contents(pm, obj);
|
256} 257
| 298} 299
|
258int instanceRefKlass::oop_update_pointers(ParCompactionManager* cm, oop obj) { 259 instanceKlass::oop_update_pointers(cm, obj);
| 300void instanceRefKlass::oop_push_contents(PSPromotionManager* pm, oop obj) { 301 if (UseCompressedOops) { 302 specialized_oop_push_contents<narrowOop>(this, pm, obj); 303 } else { 304 specialized_oop_push_contents<oop>(this, pm, obj); 305 } 306}
|
260
| 307
|
261 oop* referent_addr = java_lang_ref_Reference::referent_addr(obj);
| 308template <class T> 309void specialized_oop_update_pointers(instanceRefKlass *ref, 310 ParCompactionManager* cm, oop obj) { 311 T* referent_addr = (T*)java_lang_ref_Reference::referent_addr(obj);
|
262 PSParallelCompact::adjust_pointer(referent_addr);
| 312 PSParallelCompact::adjust_pointer(referent_addr);
|
263 oop* next_addr = java_lang_ref_Reference::next_addr(obj);
| 313 T* next_addr = (T*)java_lang_ref_Reference::next_addr(obj);
|
264 PSParallelCompact::adjust_pointer(next_addr);
| 314 PSParallelCompact::adjust_pointer(next_addr);
|
265 oop* discovered_addr = java_lang_ref_Reference::discovered_addr(obj);
| 315 T* discovered_addr = (T*)java_lang_ref_Reference::discovered_addr(obj);
|
266 PSParallelCompact::adjust_pointer(discovered_addr);
| 316 PSParallelCompact::adjust_pointer(discovered_addr);
|
| 317 debug_only(trace_reference_gc("instanceRefKlass::oop_update_ptrs", obj, 318 referent_addr, next_addr, discovered_addr);) 319}
|
267
| 320
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268#ifdef ASSERT 269 if(TraceReferenceGC && PrintGCDetails) { 270 gclog_or_tty->print_cr("instanceRefKlass::oop_update_pointers obj " 271 INTPTR_FORMAT, (oopDesc*) obj); 272 gclog_or_tty->print_cr(" referent_addr/* " INTPTR_FORMAT " / " 273 INTPTR_FORMAT, referent_addr, 274 referent_addr ? (oopDesc*) *referent_addr : NULL); 275 gclog_or_tty->print_cr(" next_addr/* " INTPTR_FORMAT " / " 276 INTPTR_FORMAT, next_addr, 277 next_addr ? (oopDesc*) *next_addr : NULL); 278 gclog_or_tty->print_cr(" discovered_addr/* " INTPTR_FORMAT " / " 279 INTPTR_FORMAT, discovered_addr, 280 discovered_addr ? (oopDesc*) *discovered_addr : NULL);
| 321int instanceRefKlass::oop_update_pointers(ParCompactionManager* cm, oop obj) { 322 instanceKlass::oop_update_pointers(cm, obj); 323 if (UseCompressedOops) { 324 specialized_oop_update_pointers<narrowOop>(this, cm, obj); 325 } else { 326 specialized_oop_update_pointers<oop>(this, cm, obj);
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281 }
| 327 }
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282#endif 283
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284 return size_helper(); 285} 286
| 328 return size_helper(); 329} 330
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287int 288instanceRefKlass::oop_update_pointers(ParCompactionManager* cm, oop obj, 289 HeapWord* beg_addr, HeapWord* end_addr) { 290 instanceKlass::oop_update_pointers(cm, obj, beg_addr, end_addr);
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291
| 331
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292 oop* p; 293 oop* referent_addr = p = java_lang_ref_Reference::referent_addr(obj);
| 332template <class T> void 333specialized_oop_update_pointers(ParCompactionManager* cm, oop obj, 334 HeapWord* beg_addr, HeapWord* end_addr) { 335 T* p; 336 T* referent_addr = p = (T*)java_lang_ref_Reference::referent_addr(obj);
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294 PSParallelCompact::adjust_pointer(p, beg_addr, end_addr);
| 337 PSParallelCompact::adjust_pointer(p, beg_addr, end_addr);
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295 oop* next_addr = p = java_lang_ref_Reference::next_addr(obj);
| 338 T* next_addr = p = (T*)java_lang_ref_Reference::next_addr(obj);
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296 PSParallelCompact::adjust_pointer(p, beg_addr, end_addr);
| 339 PSParallelCompact::adjust_pointer(p, beg_addr, end_addr);
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297 oop* discovered_addr = p = java_lang_ref_Reference::discovered_addr(obj);
| 340 T* discovered_addr = p = (T*)java_lang_ref_Reference::discovered_addr(obj);
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298 PSParallelCompact::adjust_pointer(p, beg_addr, end_addr);
| 341 PSParallelCompact::adjust_pointer(p, beg_addr, end_addr);
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| 342 debug_only(trace_reference_gc("instanceRefKlass::oop_update_ptrs", obj, 343 referent_addr, next_addr, discovered_addr);) 344}
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299
| 345
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300#ifdef ASSERT 301 if(TraceReferenceGC && PrintGCDetails) { 302 gclog_or_tty->print_cr("instanceRefKlass::oop_update_pointers obj " 303 INTPTR_FORMAT, (oopDesc*) obj); 304 gclog_or_tty->print_cr(" referent_addr/* " INTPTR_FORMAT " / " 305 INTPTR_FORMAT, referent_addr, 306 referent_addr ? (oopDesc*) *referent_addr : NULL); 307 gclog_or_tty->print_cr(" next_addr/* " INTPTR_FORMAT " / " 308 INTPTR_FORMAT, next_addr, 309 next_addr ? (oopDesc*) *next_addr : NULL); 310 gclog_or_tty->print_cr(" discovered_addr/* " INTPTR_FORMAT " / " 311 INTPTR_FORMAT, discovered_addr, 312 discovered_addr ? (oopDesc*) *discovered_addr : NULL);
| 346int 347instanceRefKlass::oop_update_pointers(ParCompactionManager* cm, oop obj, 348 HeapWord* beg_addr, HeapWord* end_addr) { 349 instanceKlass::oop_update_pointers(cm, obj, beg_addr, end_addr); 350 if (UseCompressedOops) { 351 specialized_oop_update_pointers<narrowOop>(cm, obj, beg_addr, end_addr); 352 } else { 353 specialized_oop_update_pointers<oop>(cm, obj, beg_addr, end_addr);
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313 }
| 354 }
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314#endif 315
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316 return size_helper(); 317} 318#endif // SERIALGC 319 320void instanceRefKlass::update_nonstatic_oop_maps(klassOop k) { 321 // Clear the nonstatic oop-map entries corresponding to referent 322 // and nextPending field. They are treated specially by the 323 // garbage collector. 324 // The discovered field is used only by the garbage collector 325 // and is also treated specially. 326 instanceKlass* ik = instanceKlass::cast(k); 327 328 // Check that we have the right class 329 debug_only(static bool first_time = true); 330 assert(k == SystemDictionary::reference_klass() && first_time, 331 "Invalid update of maps"); 332 debug_only(first_time = false); 333 assert(ik->nonstatic_oop_map_size() == 1, "just checking"); 334 335 OopMapBlock* map = ik->start_of_nonstatic_oop_maps(); 336 337 // Check that the current map is (2,4) - currently points at field with 338 // offset 2 (words) and has 4 map entries. 339 debug_only(int offset = java_lang_ref_Reference::referent_offset); 340 debug_only(int length = ((java_lang_ref_Reference::discovered_offset -
| 355 return size_helper(); 356} 357#endif // SERIALGC 358 359void instanceRefKlass::update_nonstatic_oop_maps(klassOop k) { 360 // Clear the nonstatic oop-map entries corresponding to referent 361 // and nextPending field. They are treated specially by the 362 // garbage collector. 363 // The discovered field is used only by the garbage collector 364 // and is also treated specially. 365 instanceKlass* ik = instanceKlass::cast(k); 366 367 // Check that we have the right class 368 debug_only(static bool first_time = true); 369 assert(k == SystemDictionary::reference_klass() && first_time, 370 "Invalid update of maps"); 371 debug_only(first_time = false); 372 assert(ik->nonstatic_oop_map_size() == 1, "just checking"); 373 374 OopMapBlock* map = ik->start_of_nonstatic_oop_maps(); 375 376 // Check that the current map is (2,4) - currently points at field with 377 // offset 2 (words) and has 4 map entries. 378 debug_only(int offset = java_lang_ref_Reference::referent_offset); 379 debug_only(int length = ((java_lang_ref_Reference::discovered_offset -
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341 java_lang_ref_Reference::referent_offset)/wordSize) + 1);
| 380 java_lang_ref_Reference::referent_offset)/heapOopSize) + 1);
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342 343 if (UseSharedSpaces) { 344 assert(map->offset() == java_lang_ref_Reference::queue_offset && 345 map->length() == 1, "just checking"); 346 } else { 347 assert(map->offset() == offset && map->length() == length, 348 "just checking"); 349 350 // Update map to (3,1) - point to offset of 3 (words) with 1 map entry. 351 map->set_offset(java_lang_ref_Reference::queue_offset); 352 map->set_length(1); 353 } 354} 355 356 357// Verification 358 359void instanceRefKlass::oop_verify_on(oop obj, outputStream* st) { 360 instanceKlass::oop_verify_on(obj, st); 361 // Verify referent field 362 oop referent = java_lang_ref_Reference::referent(obj); 363 364 // We should make this general to all heaps 365 GenCollectedHeap* gch = NULL; 366 if (Universe::heap()->kind() == CollectedHeap::GenCollectedHeap) 367 gch = GenCollectedHeap::heap(); 368 369 if (referent != NULL) { 370 guarantee(referent->is_oop(), "referent field heap failed");
| 381 382 if (UseSharedSpaces) { 383 assert(map->offset() == java_lang_ref_Reference::queue_offset && 384 map->length() == 1, "just checking"); 385 } else { 386 assert(map->offset() == offset && map->length() == length, 387 "just checking"); 388 389 // Update map to (3,1) - point to offset of 3 (words) with 1 map entry. 390 map->set_offset(java_lang_ref_Reference::queue_offset); 391 map->set_length(1); 392 } 393} 394 395 396// Verification 397 398void instanceRefKlass::oop_verify_on(oop obj, outputStream* st) { 399 instanceKlass::oop_verify_on(obj, st); 400 // Verify referent field 401 oop referent = java_lang_ref_Reference::referent(obj); 402 403 // We should make this general to all heaps 404 GenCollectedHeap* gch = NULL; 405 if (Universe::heap()->kind() == CollectedHeap::GenCollectedHeap) 406 gch = GenCollectedHeap::heap(); 407 408 if (referent != NULL) { 409 guarantee(referent->is_oop(), "referent field heap failed");
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371 if (gch != NULL && !gch->is_in_youngest(obj))
| 410 if (gch != NULL && !gch->is_in_youngest(obj)) {
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372 // We do a specific remembered set check here since the referent 373 // field is not part of the oop mask and therefore skipped by the 374 // regular verify code.
| 411 // We do a specific remembered set check here since the referent 412 // field is not part of the oop mask and therefore skipped by the 413 // regular verify code.
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375 obj->verify_old_oop(java_lang_ref_Reference::referent_addr(obj), true);
| 414 if (UseCompressedOops) { 415 narrowOop* referent_addr = (narrowOop*)java_lang_ref_Reference::referent_addr(obj); 416 obj->verify_old_oop(referent_addr, true); 417 } else { 418 oop* referent_addr = (oop*)java_lang_ref_Reference::referent_addr(obj); 419 obj->verify_old_oop(referent_addr, true); 420 } 421 }
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376 } 377 // Verify next field 378 oop next = java_lang_ref_Reference::next(obj); 379 if (next != NULL) {
| 422 } 423 // Verify next field 424 oop next = java_lang_ref_Reference::next(obj); 425 if (next != NULL) {
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380 guarantee(next->is_oop(), "next field verify failed");
| 426 guarantee(next->is_oop(), "next field verify fa iled");
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381 guarantee(next->is_instanceRef(), "next field verify failed"); 382 if (gch != NULL && !gch->is_in_youngest(obj)) { 383 // We do a specific remembered set check here since the next field is 384 // not part of the oop mask and therefore skipped by the regular 385 // verify code.
| 427 guarantee(next->is_instanceRef(), "next field verify failed"); 428 if (gch != NULL && !gch->is_in_youngest(obj)) { 429 // We do a specific remembered set check here since the next field is 430 // not part of the oop mask and therefore skipped by the regular 431 // verify code.
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386 obj->verify_old_oop(java_lang_ref_Reference::next_addr(obj), true);
| 432 if (UseCompressedOops) { 433 narrowOop* next_addr = (narrowOop*)java_lang_ref_Reference::next_addr(obj); 434 obj->verify_old_oop(next_addr, true); 435 } else { 436 oop* next_addr = (oop*)java_lang_ref_Reference::next_addr(obj); 437 obj->verify_old_oop(next_addr, true); 438 }
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387 } 388 } 389} 390 391void instanceRefKlass::acquire_pending_list_lock(BasicLock *pending_list_basic_lock) { 392 // we may enter this with pending exception set 393 PRESERVE_EXCEPTION_MARK; // exceptions are never thrown, needed for TRAPS argument 394 Handle h_lock(THREAD, java_lang_ref_Reference::pending_list_lock()); 395 ObjectSynchronizer::fast_enter(h_lock, pending_list_basic_lock, false, THREAD); 396 assert(ObjectSynchronizer::current_thread_holds_lock( 397 JavaThread::current(), h_lock), 398 "Locking should have succeeded"); 399 if (HAS_PENDING_EXCEPTION) CLEAR_PENDING_EXCEPTION; 400} 401 402void instanceRefKlass::release_and_notify_pending_list_lock( 403 BasicLock *pending_list_basic_lock) { 404 // we may enter this with pending exception set 405 PRESERVE_EXCEPTION_MARK; // exceptions are never thrown, needed for TRAPS argument 406 // 407 Handle h_lock(THREAD, java_lang_ref_Reference::pending_list_lock()); 408 assert(ObjectSynchronizer::current_thread_holds_lock( 409 JavaThread::current(), h_lock), 410 "Lock should be held"); 411 // Notify waiters on pending lists lock if there is any reference. 412 if (java_lang_ref_Reference::pending_list() != NULL) { 413 ObjectSynchronizer::notifyall(h_lock, THREAD); 414 } 415 ObjectSynchronizer::fast_exit(h_lock(), pending_list_basic_lock, THREAD); 416 if (HAS_PENDING_EXCEPTION) CLEAR_PENDING_EXCEPTION; 417}
| 439 } 440 } 441} 442 443void instanceRefKlass::acquire_pending_list_lock(BasicLock *pending_list_basic_lock) { 444 // we may enter this with pending exception set 445 PRESERVE_EXCEPTION_MARK; // exceptions are never thrown, needed for TRAPS argument 446 Handle h_lock(THREAD, java_lang_ref_Reference::pending_list_lock()); 447 ObjectSynchronizer::fast_enter(h_lock, pending_list_basic_lock, false, THREAD); 448 assert(ObjectSynchronizer::current_thread_holds_lock( 449 JavaThread::current(), h_lock), 450 "Locking should have succeeded"); 451 if (HAS_PENDING_EXCEPTION) CLEAR_PENDING_EXCEPTION; 452} 453 454void instanceRefKlass::release_and_notify_pending_list_lock( 455 BasicLock *pending_list_basic_lock) { 456 // we may enter this with pending exception set 457 PRESERVE_EXCEPTION_MARK; // exceptions are never thrown, needed for TRAPS argument 458 // 459 Handle h_lock(THREAD, java_lang_ref_Reference::pending_list_lock()); 460 assert(ObjectSynchronizer::current_thread_holds_lock( 461 JavaThread::current(), h_lock), 462 "Lock should be held"); 463 // Notify waiters on pending lists lock if there is any reference. 464 if (java_lang_ref_Reference::pending_list() != NULL) { 465 ObjectSynchronizer::notifyall(h_lock, THREAD); 466 } 467 ObjectSynchronizer::fast_exit(h_lock(), pending_list_basic_lock, THREAD); 468 if (HAS_PENDING_EXCEPTION) CLEAR_PENDING_EXCEPTION; 469}
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