Wed, 06 Jan 2010 14:22:39 -0800
6914300: ciEnv should export all well known classes
Reviewed-by: kvn, twisti
duke@435 | 1 | /* |
xdono@1383 | 2 | * Copyright 1997-2009 Sun Microsystems, Inc. All Rights Reserved. |
duke@435 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
duke@435 | 4 | * |
duke@435 | 5 | * This code is free software; you can redistribute it and/or modify it |
duke@435 | 6 | * under the terms of the GNU General Public License version 2 only, as |
duke@435 | 7 | * published by the Free Software Foundation. |
duke@435 | 8 | * |
duke@435 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
duke@435 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
duke@435 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
duke@435 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
duke@435 | 13 | * accompanied this code). |
duke@435 | 14 | * |
duke@435 | 15 | * You should have received a copy of the GNU General Public License version |
duke@435 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
duke@435 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
duke@435 | 18 | * |
duke@435 | 19 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
duke@435 | 20 | * CA 95054 USA or visit www.sun.com if you need additional information or |
duke@435 | 21 | * have any questions. |
duke@435 | 22 | * |
duke@435 | 23 | */ |
duke@435 | 24 | |
duke@435 | 25 | # include "incls/_precompiled.incl" |
duke@435 | 26 | # include "incls/_instanceRefKlass.cpp.incl" |
duke@435 | 27 | |
coleenp@548 | 28 | template <class T> |
coleenp@548 | 29 | static void specialized_oop_follow_contents(instanceRefKlass* ref, oop obj) { |
coleenp@548 | 30 | T* referent_addr = (T*)java_lang_ref_Reference::referent_addr(obj); |
ysr@1280 | 31 | T heap_oop = oopDesc::load_heap_oop(referent_addr); |
duke@435 | 32 | debug_only( |
duke@435 | 33 | if(TraceReferenceGC && PrintGCDetails) { |
coleenp@548 | 34 | gclog_or_tty->print_cr("instanceRefKlass::oop_follow_contents " INTPTR_FORMAT, obj); |
duke@435 | 35 | } |
duke@435 | 36 | ) |
ysr@1280 | 37 | if (!oopDesc::is_null(heap_oop)) { |
ysr@1280 | 38 | oop referent = oopDesc::decode_heap_oop_not_null(heap_oop); |
duke@435 | 39 | if (!referent->is_gc_marked() && |
duke@435 | 40 | MarkSweep::ref_processor()-> |
coleenp@548 | 41 | discover_reference(obj, ref->reference_type())) { |
duke@435 | 42 | // reference already enqueued, referent will be traversed later |
coleenp@548 | 43 | ref->instanceKlass::oop_follow_contents(obj); |
duke@435 | 44 | debug_only( |
duke@435 | 45 | if(TraceReferenceGC && PrintGCDetails) { |
coleenp@548 | 46 | gclog_or_tty->print_cr(" Non NULL enqueued " INTPTR_FORMAT, obj); |
duke@435 | 47 | } |
duke@435 | 48 | ) |
duke@435 | 49 | return; |
duke@435 | 50 | } else { |
duke@435 | 51 | // treat referent as normal oop |
duke@435 | 52 | debug_only( |
duke@435 | 53 | if(TraceReferenceGC && PrintGCDetails) { |
coleenp@548 | 54 | gclog_or_tty->print_cr(" Non NULL normal " INTPTR_FORMAT, obj); |
duke@435 | 55 | } |
duke@435 | 56 | ) |
duke@435 | 57 | MarkSweep::mark_and_push(referent_addr); |
duke@435 | 58 | } |
duke@435 | 59 | } |
duke@435 | 60 | // treat next as normal oop. next is a link in the pending list. |
coleenp@548 | 61 | T* next_addr = (T*)java_lang_ref_Reference::next_addr(obj); |
duke@435 | 62 | debug_only( |
duke@435 | 63 | if(TraceReferenceGC && PrintGCDetails) { |
duke@435 | 64 | gclog_or_tty->print_cr(" Process next as normal " INTPTR_FORMAT, next_addr); |
duke@435 | 65 | } |
duke@435 | 66 | ) |
duke@435 | 67 | MarkSweep::mark_and_push(next_addr); |
coleenp@548 | 68 | ref->instanceKlass::oop_follow_contents(obj); |
coleenp@548 | 69 | } |
coleenp@548 | 70 | |
coleenp@548 | 71 | void instanceRefKlass::oop_follow_contents(oop obj) { |
coleenp@548 | 72 | if (UseCompressedOops) { |
coleenp@548 | 73 | specialized_oop_follow_contents<narrowOop>(this, obj); |
coleenp@548 | 74 | } else { |
coleenp@548 | 75 | specialized_oop_follow_contents<oop>(this, obj); |
coleenp@548 | 76 | } |
duke@435 | 77 | } |
duke@435 | 78 | |
duke@435 | 79 | #ifndef SERIALGC |
coleenp@548 | 80 | template <class T> |
coleenp@548 | 81 | static void specialized_oop_follow_contents(instanceRefKlass* ref, |
coleenp@548 | 82 | ParCompactionManager* cm, |
coleenp@548 | 83 | oop obj) { |
coleenp@548 | 84 | T* referent_addr = (T*)java_lang_ref_Reference::referent_addr(obj); |
ysr@1280 | 85 | T heap_oop = oopDesc::load_heap_oop(referent_addr); |
duke@435 | 86 | debug_only( |
duke@435 | 87 | if(TraceReferenceGC && PrintGCDetails) { |
coleenp@548 | 88 | gclog_or_tty->print_cr("instanceRefKlass::oop_follow_contents " INTPTR_FORMAT, obj); |
duke@435 | 89 | } |
duke@435 | 90 | ) |
ysr@1280 | 91 | if (!oopDesc::is_null(heap_oop)) { |
ysr@1280 | 92 | oop referent = oopDesc::decode_heap_oop_not_null(heap_oop); |
duke@435 | 93 | if (PSParallelCompact::mark_bitmap()->is_unmarked(referent) && |
duke@435 | 94 | PSParallelCompact::ref_processor()-> |
coleenp@548 | 95 | discover_reference(obj, ref->reference_type())) { |
duke@435 | 96 | // reference already enqueued, referent will be traversed later |
coleenp@548 | 97 | ref->instanceKlass::oop_follow_contents(cm, obj); |
duke@435 | 98 | debug_only( |
duke@435 | 99 | if(TraceReferenceGC && PrintGCDetails) { |
coleenp@548 | 100 | gclog_or_tty->print_cr(" Non NULL enqueued " INTPTR_FORMAT, obj); |
duke@435 | 101 | } |
duke@435 | 102 | ) |
duke@435 | 103 | return; |
duke@435 | 104 | } else { |
duke@435 | 105 | // treat referent as normal oop |
duke@435 | 106 | debug_only( |
duke@435 | 107 | if(TraceReferenceGC && PrintGCDetails) { |
coleenp@548 | 108 | gclog_or_tty->print_cr(" Non NULL normal " INTPTR_FORMAT, obj); |
duke@435 | 109 | } |
duke@435 | 110 | ) |
duke@435 | 111 | PSParallelCompact::mark_and_push(cm, referent_addr); |
duke@435 | 112 | } |
duke@435 | 113 | } |
duke@435 | 114 | // treat next as normal oop. next is a link in the pending list. |
coleenp@548 | 115 | T* next_addr = (T*)java_lang_ref_Reference::next_addr(obj); |
duke@435 | 116 | debug_only( |
duke@435 | 117 | if(TraceReferenceGC && PrintGCDetails) { |
duke@435 | 118 | gclog_or_tty->print_cr(" Process next as normal " INTPTR_FORMAT, next_addr); |
duke@435 | 119 | } |
duke@435 | 120 | ) |
duke@435 | 121 | PSParallelCompact::mark_and_push(cm, next_addr); |
coleenp@548 | 122 | ref->instanceKlass::oop_follow_contents(cm, obj); |
coleenp@548 | 123 | } |
coleenp@548 | 124 | |
coleenp@548 | 125 | void instanceRefKlass::oop_follow_contents(ParCompactionManager* cm, |
coleenp@548 | 126 | oop obj) { |
coleenp@548 | 127 | if (UseCompressedOops) { |
coleenp@548 | 128 | specialized_oop_follow_contents<narrowOop>(this, cm, obj); |
coleenp@548 | 129 | } else { |
coleenp@548 | 130 | specialized_oop_follow_contents<oop>(this, cm, obj); |
coleenp@548 | 131 | } |
duke@435 | 132 | } |
duke@435 | 133 | #endif // SERIALGC |
duke@435 | 134 | |
coleenp@548 | 135 | #ifdef ASSERT |
coleenp@548 | 136 | template <class T> void trace_reference_gc(const char *s, oop obj, |
coleenp@548 | 137 | T* referent_addr, |
coleenp@548 | 138 | T* next_addr, |
coleenp@548 | 139 | T* discovered_addr) { |
coleenp@548 | 140 | if(TraceReferenceGC && PrintGCDetails) { |
coleenp@548 | 141 | gclog_or_tty->print_cr("%s obj " INTPTR_FORMAT, s, (address)obj); |
coleenp@548 | 142 | gclog_or_tty->print_cr(" referent_addr/* " INTPTR_FORMAT " / " |
coleenp@548 | 143 | INTPTR_FORMAT, referent_addr, |
coleenp@548 | 144 | referent_addr ? |
coleenp@548 | 145 | (address)oopDesc::load_decode_heap_oop(referent_addr) : NULL); |
coleenp@548 | 146 | gclog_or_tty->print_cr(" next_addr/* " INTPTR_FORMAT " / " |
coleenp@548 | 147 | INTPTR_FORMAT, next_addr, |
coleenp@548 | 148 | next_addr ? (address)oopDesc::load_decode_heap_oop(next_addr) : NULL); |
coleenp@548 | 149 | gclog_or_tty->print_cr(" discovered_addr/* " INTPTR_FORMAT " / " |
coleenp@548 | 150 | INTPTR_FORMAT, discovered_addr, |
coleenp@548 | 151 | discovered_addr ? |
coleenp@548 | 152 | (address)oopDesc::load_decode_heap_oop(discovered_addr) : NULL); |
coleenp@548 | 153 | } |
coleenp@548 | 154 | } |
coleenp@548 | 155 | #endif |
coleenp@548 | 156 | |
coleenp@548 | 157 | template <class T> void specialized_oop_adjust_pointers(instanceRefKlass *ref, oop obj) { |
coleenp@548 | 158 | T* referent_addr = (T*)java_lang_ref_Reference::referent_addr(obj); |
coleenp@548 | 159 | MarkSweep::adjust_pointer(referent_addr); |
coleenp@548 | 160 | T* next_addr = (T*)java_lang_ref_Reference::next_addr(obj); |
coleenp@548 | 161 | MarkSweep::adjust_pointer(next_addr); |
coleenp@548 | 162 | T* discovered_addr = (T*)java_lang_ref_Reference::discovered_addr(obj); |
coleenp@548 | 163 | MarkSweep::adjust_pointer(discovered_addr); |
coleenp@548 | 164 | debug_only(trace_reference_gc("instanceRefKlass::oop_adjust_pointers", obj, |
coleenp@548 | 165 | referent_addr, next_addr, discovered_addr);) |
coleenp@548 | 166 | } |
duke@435 | 167 | |
duke@435 | 168 | int instanceRefKlass::oop_adjust_pointers(oop obj) { |
duke@435 | 169 | int size = size_helper(); |
duke@435 | 170 | instanceKlass::oop_adjust_pointers(obj); |
duke@435 | 171 | |
coleenp@548 | 172 | if (UseCompressedOops) { |
coleenp@548 | 173 | specialized_oop_adjust_pointers<narrowOop>(this, obj); |
coleenp@548 | 174 | } else { |
coleenp@548 | 175 | specialized_oop_adjust_pointers<oop>(this, obj); |
duke@435 | 176 | } |
duke@435 | 177 | return size; |
duke@435 | 178 | } |
duke@435 | 179 | |
coleenp@548 | 180 | #define InstanceRefKlass_SPECIALIZED_OOP_ITERATE(T, nv_suffix, contains) \ |
ysr@777 | 181 | if (closure->apply_to_weak_ref_discovered_field()) { \ |
ysr@777 | 182 | T* disc_addr = (T*)java_lang_ref_Reference::discovered_addr(obj); \ |
ysr@777 | 183 | closure->do_oop##nv_suffix(disc_addr); \ |
ysr@777 | 184 | } \ |
ysr@777 | 185 | \ |
coleenp@548 | 186 | T* referent_addr = (T*)java_lang_ref_Reference::referent_addr(obj); \ |
ysr@1280 | 187 | T heap_oop = oopDesc::load_heap_oop(referent_addr); \ |
ysr@1280 | 188 | if (!oopDesc::is_null(heap_oop) && contains(referent_addr)) { \ |
coleenp@548 | 189 | ReferenceProcessor* rp = closure->_ref_processor; \ |
ysr@1280 | 190 | oop referent = oopDesc::decode_heap_oop_not_null(heap_oop); \ |
coleenp@548 | 191 | if (!referent->is_gc_marked() && (rp != NULL) && \ |
coleenp@548 | 192 | rp->discover_reference(obj, reference_type())) { \ |
coleenp@548 | 193 | return size; \ |
coleenp@548 | 194 | } else { \ |
coleenp@548 | 195 | /* treat referent as normal oop */ \ |
coleenp@548 | 196 | SpecializationStats::record_do_oop_call##nv_suffix(SpecializationStats::irk);\ |
coleenp@548 | 197 | closure->do_oop##nv_suffix(referent_addr); \ |
coleenp@548 | 198 | } \ |
coleenp@548 | 199 | } \ |
coleenp@548 | 200 | /* treat next as normal oop */ \ |
coleenp@548 | 201 | T* next_addr = (T*)java_lang_ref_Reference::next_addr(obj); \ |
coleenp@548 | 202 | if (contains(next_addr)) { \ |
coleenp@548 | 203 | SpecializationStats::record_do_oop_call##nv_suffix(SpecializationStats::irk); \ |
coleenp@548 | 204 | closure->do_oop##nv_suffix(next_addr); \ |
coleenp@548 | 205 | } \ |
coleenp@548 | 206 | return size; \ |
coleenp@548 | 207 | |
coleenp@548 | 208 | |
coleenp@548 | 209 | template <class T> bool contains(T *t) { return true; } |
coleenp@548 | 210 | |
coleenp@548 | 211 | // Macro to define instanceRefKlass::oop_oop_iterate for virtual/nonvirtual for |
coleenp@548 | 212 | // all closures. Macros calling macros above for each oop size. |
coleenp@548 | 213 | |
duke@435 | 214 | #define InstanceRefKlass_OOP_OOP_ITERATE_DEFN(OopClosureType, nv_suffix) \ |
duke@435 | 215 | \ |
duke@435 | 216 | int instanceRefKlass:: \ |
duke@435 | 217 | oop_oop_iterate##nv_suffix(oop obj, OopClosureType* closure) { \ |
duke@435 | 218 | /* Get size before changing pointers */ \ |
duke@435 | 219 | SpecializationStats::record_iterate_call##nv_suffix(SpecializationStats::irk);\ |
duke@435 | 220 | \ |
duke@435 | 221 | int size = instanceKlass::oop_oop_iterate##nv_suffix(obj, closure); \ |
duke@435 | 222 | \ |
coleenp@548 | 223 | if (UseCompressedOops) { \ |
coleenp@548 | 224 | InstanceRefKlass_SPECIALIZED_OOP_ITERATE(narrowOop, nv_suffix, contains); \ |
coleenp@548 | 225 | } else { \ |
coleenp@548 | 226 | InstanceRefKlass_SPECIALIZED_OOP_ITERATE(oop, nv_suffix, contains); \ |
duke@435 | 227 | } \ |
duke@435 | 228 | } |
duke@435 | 229 | |
ysr@777 | 230 | #ifndef SERIALGC |
ysr@777 | 231 | #define InstanceRefKlass_OOP_OOP_ITERATE_BACKWARDS_DEFN(OopClosureType, nv_suffix) \ |
ysr@777 | 232 | \ |
ysr@777 | 233 | int instanceRefKlass:: \ |
ysr@777 | 234 | oop_oop_iterate_backwards##nv_suffix(oop obj, OopClosureType* closure) { \ |
ysr@777 | 235 | /* Get size before changing pointers */ \ |
ysr@777 | 236 | SpecializationStats::record_iterate_call##nv_suffix(SpecializationStats::irk);\ |
ysr@777 | 237 | \ |
ysr@777 | 238 | int size = instanceKlass::oop_oop_iterate_backwards##nv_suffix(obj, closure); \ |
ysr@777 | 239 | \ |
ysr@777 | 240 | if (UseCompressedOops) { \ |
ysr@777 | 241 | InstanceRefKlass_SPECIALIZED_OOP_ITERATE(narrowOop, nv_suffix, contains); \ |
ysr@777 | 242 | } else { \ |
ysr@777 | 243 | InstanceRefKlass_SPECIALIZED_OOP_ITERATE(oop, nv_suffix, contains); \ |
ysr@777 | 244 | } \ |
ysr@777 | 245 | } |
ysr@777 | 246 | #endif // !SERIALGC |
ysr@777 | 247 | |
ysr@777 | 248 | |
duke@435 | 249 | #define InstanceRefKlass_OOP_OOP_ITERATE_DEFN_m(OopClosureType, nv_suffix) \ |
duke@435 | 250 | \ |
duke@435 | 251 | int instanceRefKlass:: \ |
duke@435 | 252 | oop_oop_iterate##nv_suffix##_m(oop obj, \ |
duke@435 | 253 | OopClosureType* closure, \ |
duke@435 | 254 | MemRegion mr) { \ |
duke@435 | 255 | SpecializationStats::record_iterate_call##nv_suffix(SpecializationStats::irk);\ |
duke@435 | 256 | \ |
duke@435 | 257 | int size = instanceKlass::oop_oop_iterate##nv_suffix##_m(obj, closure, mr); \ |
coleenp@548 | 258 | if (UseCompressedOops) { \ |
coleenp@548 | 259 | InstanceRefKlass_SPECIALIZED_OOP_ITERATE(narrowOop, nv_suffix, mr.contains); \ |
coleenp@548 | 260 | } else { \ |
coleenp@548 | 261 | InstanceRefKlass_SPECIALIZED_OOP_ITERATE(oop, nv_suffix, mr.contains); \ |
duke@435 | 262 | } \ |
duke@435 | 263 | } |
duke@435 | 264 | |
duke@435 | 265 | ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceRefKlass_OOP_OOP_ITERATE_DEFN) |
ysr@777 | 266 | ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceRefKlass_OOP_OOP_ITERATE_DEFN) |
ysr@777 | 267 | #ifndef SERIALGC |
ysr@777 | 268 | ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceRefKlass_OOP_OOP_ITERATE_BACKWARDS_DEFN) |
ysr@777 | 269 | ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceRefKlass_OOP_OOP_ITERATE_BACKWARDS_DEFN) |
ysr@777 | 270 | #endif // SERIALGC |
duke@435 | 271 | ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceRefKlass_OOP_OOP_ITERATE_DEFN_m) |
ysr@777 | 272 | ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceRefKlass_OOP_OOP_ITERATE_DEFN_m) |
duke@435 | 273 | |
duke@435 | 274 | #ifndef SERIALGC |
coleenp@548 | 275 | template <class T> |
coleenp@548 | 276 | void specialized_oop_copy_contents(instanceRefKlass *ref, |
coleenp@548 | 277 | PSPromotionManager* pm, oop obj) { |
duke@435 | 278 | assert(!pm->depth_first(), "invariant"); |
coleenp@548 | 279 | T* referent_addr = (T*)java_lang_ref_Reference::referent_addr(obj); |
coleenp@548 | 280 | if (PSScavenge::should_scavenge(referent_addr)) { |
duke@435 | 281 | ReferenceProcessor* rp = PSScavenge::reference_processor(); |
coleenp@548 | 282 | if (rp->discover_reference(obj, ref->reference_type())) { |
duke@435 | 283 | // reference already enqueued, referent and next will be traversed later |
coleenp@548 | 284 | ref->instanceKlass::oop_copy_contents(pm, obj); |
duke@435 | 285 | return; |
duke@435 | 286 | } else { |
duke@435 | 287 | // treat referent as normal oop |
duke@435 | 288 | pm->claim_or_forward_breadth(referent_addr); |
duke@435 | 289 | } |
duke@435 | 290 | } |
duke@435 | 291 | // treat next as normal oop |
coleenp@548 | 292 | T* next_addr = (T*)java_lang_ref_Reference::next_addr(obj); |
coleenp@548 | 293 | if (PSScavenge::should_scavenge(next_addr)) { |
duke@435 | 294 | pm->claim_or_forward_breadth(next_addr); |
duke@435 | 295 | } |
coleenp@548 | 296 | ref->instanceKlass::oop_copy_contents(pm, obj); |
duke@435 | 297 | } |
duke@435 | 298 | |
coleenp@548 | 299 | void instanceRefKlass::oop_copy_contents(PSPromotionManager* pm, oop obj) { |
coleenp@548 | 300 | if (UseCompressedOops) { |
coleenp@548 | 301 | specialized_oop_copy_contents<narrowOop>(this, pm, obj); |
coleenp@548 | 302 | } else { |
coleenp@548 | 303 | specialized_oop_copy_contents<oop>(this, pm, obj); |
coleenp@548 | 304 | } |
coleenp@548 | 305 | } |
coleenp@548 | 306 | |
coleenp@548 | 307 | template <class T> |
coleenp@548 | 308 | void specialized_oop_push_contents(instanceRefKlass *ref, |
coleenp@548 | 309 | PSPromotionManager* pm, oop obj) { |
duke@435 | 310 | assert(pm->depth_first(), "invariant"); |
coleenp@548 | 311 | T* referent_addr = (T*)java_lang_ref_Reference::referent_addr(obj); |
coleenp@548 | 312 | if (PSScavenge::should_scavenge(referent_addr)) { |
duke@435 | 313 | ReferenceProcessor* rp = PSScavenge::reference_processor(); |
coleenp@548 | 314 | if (rp->discover_reference(obj, ref->reference_type())) { |
duke@435 | 315 | // reference already enqueued, referent and next will be traversed later |
coleenp@548 | 316 | ref->instanceKlass::oop_push_contents(pm, obj); |
duke@435 | 317 | return; |
duke@435 | 318 | } else { |
duke@435 | 319 | // treat referent as normal oop |
duke@435 | 320 | pm->claim_or_forward_depth(referent_addr); |
duke@435 | 321 | } |
duke@435 | 322 | } |
duke@435 | 323 | // treat next as normal oop |
coleenp@548 | 324 | T* next_addr = (T*)java_lang_ref_Reference::next_addr(obj); |
coleenp@548 | 325 | if (PSScavenge::should_scavenge(next_addr)) { |
duke@435 | 326 | pm->claim_or_forward_depth(next_addr); |
duke@435 | 327 | } |
coleenp@548 | 328 | ref->instanceKlass::oop_push_contents(pm, obj); |
coleenp@548 | 329 | } |
coleenp@548 | 330 | |
coleenp@548 | 331 | void instanceRefKlass::oop_push_contents(PSPromotionManager* pm, oop obj) { |
coleenp@548 | 332 | if (UseCompressedOops) { |
coleenp@548 | 333 | specialized_oop_push_contents<narrowOop>(this, pm, obj); |
coleenp@548 | 334 | } else { |
coleenp@548 | 335 | specialized_oop_push_contents<oop>(this, pm, obj); |
coleenp@548 | 336 | } |
coleenp@548 | 337 | } |
coleenp@548 | 338 | |
coleenp@548 | 339 | template <class T> |
coleenp@548 | 340 | void specialized_oop_update_pointers(instanceRefKlass *ref, |
coleenp@548 | 341 | ParCompactionManager* cm, oop obj) { |
coleenp@548 | 342 | T* referent_addr = (T*)java_lang_ref_Reference::referent_addr(obj); |
coleenp@548 | 343 | PSParallelCompact::adjust_pointer(referent_addr); |
coleenp@548 | 344 | T* next_addr = (T*)java_lang_ref_Reference::next_addr(obj); |
coleenp@548 | 345 | PSParallelCompact::adjust_pointer(next_addr); |
coleenp@548 | 346 | T* discovered_addr = (T*)java_lang_ref_Reference::discovered_addr(obj); |
coleenp@548 | 347 | PSParallelCompact::adjust_pointer(discovered_addr); |
coleenp@548 | 348 | debug_only(trace_reference_gc("instanceRefKlass::oop_update_ptrs", obj, |
coleenp@548 | 349 | referent_addr, next_addr, discovered_addr);) |
duke@435 | 350 | } |
duke@435 | 351 | |
duke@435 | 352 | int instanceRefKlass::oop_update_pointers(ParCompactionManager* cm, oop obj) { |
duke@435 | 353 | instanceKlass::oop_update_pointers(cm, obj); |
coleenp@548 | 354 | if (UseCompressedOops) { |
coleenp@548 | 355 | specialized_oop_update_pointers<narrowOop>(this, cm, obj); |
coleenp@548 | 356 | } else { |
coleenp@548 | 357 | specialized_oop_update_pointers<oop>(this, cm, obj); |
coleenp@548 | 358 | } |
coleenp@548 | 359 | return size_helper(); |
coleenp@548 | 360 | } |
duke@435 | 361 | |
duke@435 | 362 | |
coleenp@548 | 363 | template <class T> void |
coleenp@548 | 364 | specialized_oop_update_pointers(ParCompactionManager* cm, oop obj, |
coleenp@548 | 365 | HeapWord* beg_addr, HeapWord* end_addr) { |
coleenp@548 | 366 | T* p; |
coleenp@548 | 367 | T* referent_addr = p = (T*)java_lang_ref_Reference::referent_addr(obj); |
coleenp@548 | 368 | PSParallelCompact::adjust_pointer(p, beg_addr, end_addr); |
coleenp@548 | 369 | T* next_addr = p = (T*)java_lang_ref_Reference::next_addr(obj); |
coleenp@548 | 370 | PSParallelCompact::adjust_pointer(p, beg_addr, end_addr); |
coleenp@548 | 371 | T* discovered_addr = p = (T*)java_lang_ref_Reference::discovered_addr(obj); |
coleenp@548 | 372 | PSParallelCompact::adjust_pointer(p, beg_addr, end_addr); |
coleenp@548 | 373 | debug_only(trace_reference_gc("instanceRefKlass::oop_update_ptrs", obj, |
coleenp@548 | 374 | referent_addr, next_addr, discovered_addr);) |
duke@435 | 375 | } |
duke@435 | 376 | |
duke@435 | 377 | int |
duke@435 | 378 | instanceRefKlass::oop_update_pointers(ParCompactionManager* cm, oop obj, |
duke@435 | 379 | HeapWord* beg_addr, HeapWord* end_addr) { |
duke@435 | 380 | instanceKlass::oop_update_pointers(cm, obj, beg_addr, end_addr); |
coleenp@548 | 381 | if (UseCompressedOops) { |
coleenp@548 | 382 | specialized_oop_update_pointers<narrowOop>(cm, obj, beg_addr, end_addr); |
coleenp@548 | 383 | } else { |
coleenp@548 | 384 | specialized_oop_update_pointers<oop>(cm, obj, beg_addr, end_addr); |
duke@435 | 385 | } |
duke@435 | 386 | return size_helper(); |
duke@435 | 387 | } |
duke@435 | 388 | #endif // SERIALGC |
duke@435 | 389 | |
duke@435 | 390 | void instanceRefKlass::update_nonstatic_oop_maps(klassOop k) { |
duke@435 | 391 | // Clear the nonstatic oop-map entries corresponding to referent |
duke@435 | 392 | // and nextPending field. They are treated specially by the |
duke@435 | 393 | // garbage collector. |
duke@435 | 394 | // The discovered field is used only by the garbage collector |
duke@435 | 395 | // and is also treated specially. |
duke@435 | 396 | instanceKlass* ik = instanceKlass::cast(k); |
duke@435 | 397 | |
duke@435 | 398 | // Check that we have the right class |
duke@435 | 399 | debug_only(static bool first_time = true); |
never@1577 | 400 | assert(k == SystemDictionary::Reference_klass() && first_time, |
duke@435 | 401 | "Invalid update of maps"); |
duke@435 | 402 | debug_only(first_time = false); |
jcoomes@1373 | 403 | assert(ik->nonstatic_oop_map_count() == 1, "just checking"); |
duke@435 | 404 | |
duke@435 | 405 | OopMapBlock* map = ik->start_of_nonstatic_oop_maps(); |
duke@435 | 406 | |
duke@435 | 407 | // Check that the current map is (2,4) - currently points at field with |
duke@435 | 408 | // offset 2 (words) and has 4 map entries. |
duke@435 | 409 | debug_only(int offset = java_lang_ref_Reference::referent_offset); |
jcoomes@1374 | 410 | debug_only(unsigned int count = ((java_lang_ref_Reference::discovered_offset - |
coleenp@548 | 411 | java_lang_ref_Reference::referent_offset)/heapOopSize) + 1); |
duke@435 | 412 | |
duke@435 | 413 | if (UseSharedSpaces) { |
duke@435 | 414 | assert(map->offset() == java_lang_ref_Reference::queue_offset && |
jcoomes@1373 | 415 | map->count() == 1, "just checking"); |
duke@435 | 416 | } else { |
jcoomes@1373 | 417 | assert(map->offset() == offset && map->count() == count, |
duke@435 | 418 | "just checking"); |
duke@435 | 419 | |
duke@435 | 420 | // Update map to (3,1) - point to offset of 3 (words) with 1 map entry. |
duke@435 | 421 | map->set_offset(java_lang_ref_Reference::queue_offset); |
jcoomes@1373 | 422 | map->set_count(1); |
duke@435 | 423 | } |
duke@435 | 424 | } |
duke@435 | 425 | |
duke@435 | 426 | |
duke@435 | 427 | // Verification |
duke@435 | 428 | |
duke@435 | 429 | void instanceRefKlass::oop_verify_on(oop obj, outputStream* st) { |
duke@435 | 430 | instanceKlass::oop_verify_on(obj, st); |
duke@435 | 431 | // Verify referent field |
duke@435 | 432 | oop referent = java_lang_ref_Reference::referent(obj); |
duke@435 | 433 | |
duke@435 | 434 | // We should make this general to all heaps |
duke@435 | 435 | GenCollectedHeap* gch = NULL; |
duke@435 | 436 | if (Universe::heap()->kind() == CollectedHeap::GenCollectedHeap) |
duke@435 | 437 | gch = GenCollectedHeap::heap(); |
duke@435 | 438 | |
duke@435 | 439 | if (referent != NULL) { |
duke@435 | 440 | guarantee(referent->is_oop(), "referent field heap failed"); |
coleenp@548 | 441 | if (gch != NULL && !gch->is_in_youngest(obj)) { |
duke@435 | 442 | // We do a specific remembered set check here since the referent |
duke@435 | 443 | // field is not part of the oop mask and therefore skipped by the |
duke@435 | 444 | // regular verify code. |
coleenp@548 | 445 | if (UseCompressedOops) { |
coleenp@548 | 446 | narrowOop* referent_addr = (narrowOop*)java_lang_ref_Reference::referent_addr(obj); |
coleenp@548 | 447 | obj->verify_old_oop(referent_addr, true); |
coleenp@548 | 448 | } else { |
coleenp@548 | 449 | oop* referent_addr = (oop*)java_lang_ref_Reference::referent_addr(obj); |
coleenp@548 | 450 | obj->verify_old_oop(referent_addr, true); |
coleenp@548 | 451 | } |
coleenp@548 | 452 | } |
duke@435 | 453 | } |
duke@435 | 454 | // Verify next field |
duke@435 | 455 | oop next = java_lang_ref_Reference::next(obj); |
duke@435 | 456 | if (next != NULL) { |
ysr@777 | 457 | guarantee(next->is_oop(), "next field verify failed"); |
duke@435 | 458 | guarantee(next->is_instanceRef(), "next field verify failed"); |
duke@435 | 459 | if (gch != NULL && !gch->is_in_youngest(obj)) { |
duke@435 | 460 | // We do a specific remembered set check here since the next field is |
duke@435 | 461 | // not part of the oop mask and therefore skipped by the regular |
duke@435 | 462 | // verify code. |
coleenp@548 | 463 | if (UseCompressedOops) { |
coleenp@548 | 464 | narrowOop* next_addr = (narrowOop*)java_lang_ref_Reference::next_addr(obj); |
coleenp@548 | 465 | obj->verify_old_oop(next_addr, true); |
coleenp@548 | 466 | } else { |
coleenp@548 | 467 | oop* next_addr = (oop*)java_lang_ref_Reference::next_addr(obj); |
coleenp@548 | 468 | obj->verify_old_oop(next_addr, true); |
coleenp@548 | 469 | } |
duke@435 | 470 | } |
duke@435 | 471 | } |
duke@435 | 472 | } |
duke@435 | 473 | |
duke@435 | 474 | void instanceRefKlass::acquire_pending_list_lock(BasicLock *pending_list_basic_lock) { |
duke@435 | 475 | // we may enter this with pending exception set |
duke@435 | 476 | PRESERVE_EXCEPTION_MARK; // exceptions are never thrown, needed for TRAPS argument |
duke@435 | 477 | Handle h_lock(THREAD, java_lang_ref_Reference::pending_list_lock()); |
duke@435 | 478 | ObjectSynchronizer::fast_enter(h_lock, pending_list_basic_lock, false, THREAD); |
duke@435 | 479 | assert(ObjectSynchronizer::current_thread_holds_lock( |
duke@435 | 480 | JavaThread::current(), h_lock), |
duke@435 | 481 | "Locking should have succeeded"); |
duke@435 | 482 | if (HAS_PENDING_EXCEPTION) CLEAR_PENDING_EXCEPTION; |
duke@435 | 483 | } |
duke@435 | 484 | |
duke@435 | 485 | void instanceRefKlass::release_and_notify_pending_list_lock( |
duke@435 | 486 | BasicLock *pending_list_basic_lock) { |
duke@435 | 487 | // we may enter this with pending exception set |
duke@435 | 488 | PRESERVE_EXCEPTION_MARK; // exceptions are never thrown, needed for TRAPS argument |
duke@435 | 489 | // |
duke@435 | 490 | Handle h_lock(THREAD, java_lang_ref_Reference::pending_list_lock()); |
duke@435 | 491 | assert(ObjectSynchronizer::current_thread_holds_lock( |
duke@435 | 492 | JavaThread::current(), h_lock), |
duke@435 | 493 | "Lock should be held"); |
duke@435 | 494 | // Notify waiters on pending lists lock if there is any reference. |
duke@435 | 495 | if (java_lang_ref_Reference::pending_list() != NULL) { |
duke@435 | 496 | ObjectSynchronizer::notifyall(h_lock, THREAD); |
duke@435 | 497 | } |
duke@435 | 498 | ObjectSynchronizer::fast_exit(h_lock(), pending_list_basic_lock, THREAD); |
duke@435 | 499 | if (HAS_PENDING_EXCEPTION) CLEAR_PENDING_EXCEPTION; |
duke@435 | 500 | } |