Fri, 01 Nov 2013 17:09:38 +0100
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
7057939: jmap shows MaxNewSize=4GB when Java is using parallel collector
Summary: Major cleanup of the collectorpolicy classes
Reviewed-by: tschatzl, jcoomes
duke@435 | 1 | /* |
coleenp@4037 | 2 | * Copyright (c) 2007, 2012, Oracle and/or its affiliates. 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 | * |
trims@1907 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
trims@1907 | 20 | * or visit www.oracle.com if you need additional information or have any |
trims@1907 | 21 | * questions. |
duke@435 | 22 | * |
duke@435 | 23 | */ |
duke@435 | 24 | |
stefank@2314 | 25 | #ifndef SHARE_VM_GC_IMPLEMENTATION_CONCURRENTMARKSWEEP_CMSOOPCLOSURES_HPP |
stefank@2314 | 26 | #define SHARE_VM_GC_IMPLEMENTATION_CONCURRENTMARKSWEEP_CMSOOPCLOSURES_HPP |
stefank@2314 | 27 | |
stefank@2314 | 28 | #include "memory/genOopClosures.hpp" |
stefank@2314 | 29 | |
duke@435 | 30 | ///////////////////////////////////////////////////////////////// |
duke@435 | 31 | // Closures used by ConcurrentMarkSweepGeneration's collector |
duke@435 | 32 | ///////////////////////////////////////////////////////////////// |
duke@435 | 33 | class ConcurrentMarkSweepGeneration; |
duke@435 | 34 | class CMSBitMap; |
duke@435 | 35 | class CMSMarkStack; |
duke@435 | 36 | class CMSCollector; |
duke@435 | 37 | class MarkFromRootsClosure; |
duke@435 | 38 | class Par_MarkFromRootsClosure; |
duke@435 | 39 | |
coleenp@548 | 40 | // Decode the oop and call do_oop on it. |
coleenp@548 | 41 | #define DO_OOP_WORK_DEFN \ |
coleenp@548 | 42 | void do_oop(oop obj); \ |
coleenp@548 | 43 | template <class T> inline void do_oop_work(T* p) { \ |
coleenp@548 | 44 | T heap_oop = oopDesc::load_heap_oop(p); \ |
coleenp@548 | 45 | if (!oopDesc::is_null(heap_oop)) { \ |
coleenp@548 | 46 | oop obj = oopDesc::decode_heap_oop_not_null(heap_oop); \ |
coleenp@548 | 47 | do_oop(obj); \ |
coleenp@548 | 48 | } \ |
coleenp@548 | 49 | } |
coleenp@548 | 50 | |
coleenp@4037 | 51 | // Applies the given oop closure to all oops in all klasses visited. |
coleenp@4037 | 52 | class CMKlassClosure : public KlassClosure { |
coleenp@4037 | 53 | friend class CMSOopClosure; |
coleenp@4037 | 54 | friend class CMSOopsInGenClosure; |
coleenp@4037 | 55 | |
coleenp@4037 | 56 | OopClosure* _oop_closure; |
coleenp@4037 | 57 | |
coleenp@4037 | 58 | // Used when _oop_closure couldn't be set in an initialization list. |
coleenp@4037 | 59 | void initialize(OopClosure* oop_closure) { |
coleenp@4037 | 60 | assert(_oop_closure == NULL, "Should only be called once"); |
coleenp@4037 | 61 | _oop_closure = oop_closure; |
coleenp@4037 | 62 | } |
coleenp@4037 | 63 | public: |
coleenp@4037 | 64 | CMKlassClosure(OopClosure* oop_closure = NULL) : _oop_closure(oop_closure) { } |
coleenp@4037 | 65 | |
coleenp@4037 | 66 | void do_klass(Klass* k); |
coleenp@4037 | 67 | }; |
coleenp@4037 | 68 | |
coleenp@4037 | 69 | // The base class for all CMS marking closures. |
coleenp@4037 | 70 | // It's used to proxy through the metadata to the oops defined in them. |
coleenp@4037 | 71 | class CMSOopClosure: public ExtendedOopClosure { |
coleenp@4037 | 72 | CMKlassClosure _klass_closure; |
coleenp@4037 | 73 | public: |
coleenp@4037 | 74 | CMSOopClosure() : ExtendedOopClosure() { |
coleenp@4037 | 75 | _klass_closure.initialize(this); |
coleenp@4037 | 76 | } |
coleenp@4037 | 77 | CMSOopClosure(ReferenceProcessor* rp) : ExtendedOopClosure(rp) { |
coleenp@4037 | 78 | _klass_closure.initialize(this); |
coleenp@4037 | 79 | } |
coleenp@4037 | 80 | |
coleenp@4037 | 81 | virtual bool do_metadata() { return do_metadata_nv(); } |
coleenp@4037 | 82 | inline bool do_metadata_nv() { return true; } |
coleenp@4037 | 83 | |
coleenp@4037 | 84 | virtual void do_klass(Klass* k); |
coleenp@4037 | 85 | void do_klass_nv(Klass* k); |
coleenp@4037 | 86 | |
coleenp@4037 | 87 | virtual void do_class_loader_data(ClassLoaderData* cld); |
coleenp@4037 | 88 | }; |
coleenp@4037 | 89 | |
coleenp@4037 | 90 | // TODO: This duplication of the CMSOopClosure class is only needed because |
coleenp@4037 | 91 | // some CMS OopClosures derive from OopsInGenClosure. It would be good |
coleenp@4037 | 92 | // to get rid of them completely. |
coleenp@4037 | 93 | class CMSOopsInGenClosure: public OopsInGenClosure { |
coleenp@4037 | 94 | CMKlassClosure _klass_closure; |
coleenp@4037 | 95 | public: |
coleenp@4037 | 96 | CMSOopsInGenClosure() { |
coleenp@4037 | 97 | _klass_closure.initialize(this); |
coleenp@4037 | 98 | } |
coleenp@4037 | 99 | |
coleenp@4037 | 100 | virtual bool do_metadata() { return do_metadata_nv(); } |
coleenp@4037 | 101 | inline bool do_metadata_nv() { return true; } |
coleenp@4037 | 102 | |
coleenp@4037 | 103 | virtual void do_klass(Klass* k); |
coleenp@4037 | 104 | void do_klass_nv(Klass* k); |
coleenp@4037 | 105 | |
coleenp@4037 | 106 | virtual void do_class_loader_data(ClassLoaderData* cld); |
coleenp@4037 | 107 | }; |
coleenp@4037 | 108 | |
coleenp@4037 | 109 | class MarkRefsIntoClosure: public CMSOopsInGenClosure { |
coleenp@548 | 110 | private: |
coleenp@548 | 111 | const MemRegion _span; |
coleenp@548 | 112 | CMSBitMap* _bitMap; |
coleenp@548 | 113 | protected: |
coleenp@548 | 114 | DO_OOP_WORK_DEFN |
duke@435 | 115 | public: |
jrose@1429 | 116 | MarkRefsIntoClosure(MemRegion span, CMSBitMap* bitMap); |
coleenp@548 | 117 | virtual void do_oop(oop* p); |
coleenp@548 | 118 | virtual void do_oop(narrowOop* p); |
coleenp@4037 | 119 | |
duke@435 | 120 | Prefetch::style prefetch_style() { |
duke@435 | 121 | return Prefetch::do_read; |
duke@435 | 122 | } |
duke@435 | 123 | }; |
duke@435 | 124 | |
jmasa@5461 | 125 | class Par_MarkRefsIntoClosure: public CMSOopsInGenClosure { |
jmasa@5461 | 126 | private: |
jmasa@5461 | 127 | const MemRegion _span; |
jmasa@5461 | 128 | CMSBitMap* _bitMap; |
jmasa@5461 | 129 | protected: |
jmasa@5461 | 130 | DO_OOP_WORK_DEFN |
jmasa@5461 | 131 | public: |
jmasa@5461 | 132 | Par_MarkRefsIntoClosure(MemRegion span, CMSBitMap* bitMap); |
jmasa@5461 | 133 | virtual void do_oop(oop* p); |
jmasa@5461 | 134 | virtual void do_oop(narrowOop* p); |
jmasa@5461 | 135 | |
jmasa@5461 | 136 | Prefetch::style prefetch_style() { |
jmasa@5461 | 137 | return Prefetch::do_read; |
jmasa@5461 | 138 | } |
jmasa@5461 | 139 | }; |
jmasa@5461 | 140 | |
duke@435 | 141 | // A variant of the above used in certain kinds of CMS |
duke@435 | 142 | // marking verification. |
coleenp@4037 | 143 | class MarkRefsIntoVerifyClosure: public CMSOopsInGenClosure { |
coleenp@548 | 144 | private: |
coleenp@548 | 145 | const MemRegion _span; |
coleenp@548 | 146 | CMSBitMap* _verification_bm; |
coleenp@548 | 147 | CMSBitMap* _cms_bm; |
coleenp@548 | 148 | protected: |
coleenp@548 | 149 | DO_OOP_WORK_DEFN |
duke@435 | 150 | public: |
duke@435 | 151 | MarkRefsIntoVerifyClosure(MemRegion span, CMSBitMap* verification_bm, |
jrose@1429 | 152 | CMSBitMap* cms_bm); |
coleenp@548 | 153 | virtual void do_oop(oop* p); |
coleenp@548 | 154 | virtual void do_oop(narrowOop* p); |
coleenp@4037 | 155 | |
duke@435 | 156 | Prefetch::style prefetch_style() { |
duke@435 | 157 | return Prefetch::do_read; |
duke@435 | 158 | } |
duke@435 | 159 | }; |
duke@435 | 160 | |
coleenp@4037 | 161 | // The non-parallel version (the parallel version appears further below). |
coleenp@4037 | 162 | class PushAndMarkClosure: public CMSOopClosure { |
coleenp@4037 | 163 | private: |
jmasa@1370 | 164 | CMSCollector* _collector; |
coleenp@548 | 165 | MemRegion _span; |
coleenp@548 | 166 | CMSBitMap* _bit_map; |
coleenp@548 | 167 | CMSBitMap* _mod_union_table; |
coleenp@548 | 168 | CMSMarkStack* _mark_stack; |
coleenp@548 | 169 | bool _concurrent_precleaning; |
coleenp@548 | 170 | protected: |
coleenp@548 | 171 | DO_OOP_WORK_DEFN |
duke@435 | 172 | public: |
duke@435 | 173 | PushAndMarkClosure(CMSCollector* collector, |
duke@435 | 174 | MemRegion span, |
duke@435 | 175 | ReferenceProcessor* rp, |
duke@435 | 176 | CMSBitMap* bit_map, |
duke@435 | 177 | CMSBitMap* mod_union_table, |
coleenp@548 | 178 | CMSMarkStack* mark_stack, |
coleenp@548 | 179 | bool concurrent_precleaning); |
coleenp@548 | 180 | virtual void do_oop(oop* p); |
coleenp@548 | 181 | virtual void do_oop(narrowOop* p); |
coleenp@548 | 182 | inline void do_oop_nv(oop* p) { PushAndMarkClosure::do_oop_work(p); } |
coleenp@548 | 183 | inline void do_oop_nv(narrowOop* p) { PushAndMarkClosure::do_oop_work(p); } |
coleenp@4037 | 184 | |
duke@435 | 185 | Prefetch::style prefetch_style() { |
duke@435 | 186 | return Prefetch::do_read; |
duke@435 | 187 | } |
duke@435 | 188 | }; |
duke@435 | 189 | |
coleenp@4037 | 190 | // In the parallel case, the bit map and the |
duke@435 | 191 | // reference processor are currently all shared. Access to |
duke@435 | 192 | // these shared mutable structures must use appropriate |
duke@435 | 193 | // synchronization (for instance, via CAS). The marking stack |
duke@435 | 194 | // used in the non-parallel case above is here replaced with |
duke@435 | 195 | // an OopTaskQueue structure to allow efficient work stealing. |
coleenp@4037 | 196 | class Par_PushAndMarkClosure: public CMSOopClosure { |
coleenp@548 | 197 | private: |
coleenp@4037 | 198 | CMSCollector* _collector; |
coleenp@548 | 199 | MemRegion _span; |
coleenp@548 | 200 | CMSBitMap* _bit_map; |
coleenp@548 | 201 | OopTaskQueue* _work_queue; |
coleenp@548 | 202 | protected: |
coleenp@548 | 203 | DO_OOP_WORK_DEFN |
duke@435 | 204 | public: |
duke@435 | 205 | Par_PushAndMarkClosure(CMSCollector* collector, |
duke@435 | 206 | MemRegion span, |
duke@435 | 207 | ReferenceProcessor* rp, |
duke@435 | 208 | CMSBitMap* bit_map, |
coleenp@4037 | 209 | OopTaskQueue* work_queue); |
coleenp@548 | 210 | virtual void do_oop(oop* p); |
coleenp@548 | 211 | virtual void do_oop(narrowOop* p); |
coleenp@548 | 212 | inline void do_oop_nv(oop* p) { Par_PushAndMarkClosure::do_oop_work(p); } |
coleenp@548 | 213 | inline void do_oop_nv(narrowOop* p) { Par_PushAndMarkClosure::do_oop_work(p); } |
coleenp@4037 | 214 | |
duke@435 | 215 | Prefetch::style prefetch_style() { |
duke@435 | 216 | return Prefetch::do_read; |
duke@435 | 217 | } |
duke@435 | 218 | }; |
duke@435 | 219 | |
duke@435 | 220 | // The non-parallel version (the parallel version appears further below). |
coleenp@4037 | 221 | class MarkRefsIntoAndScanClosure: public CMSOopsInGenClosure { |
coleenp@548 | 222 | private: |
coleenp@548 | 223 | MemRegion _span; |
coleenp@548 | 224 | CMSBitMap* _bit_map; |
coleenp@548 | 225 | CMSMarkStack* _mark_stack; |
coleenp@548 | 226 | PushAndMarkClosure _pushAndMarkClosure; |
coleenp@548 | 227 | CMSCollector* _collector; |
coleenp@548 | 228 | Mutex* _freelistLock; |
coleenp@548 | 229 | bool _yield; |
duke@435 | 230 | // Whether closure is being used for concurrent precleaning |
coleenp@548 | 231 | bool _concurrent_precleaning; |
coleenp@548 | 232 | protected: |
coleenp@548 | 233 | DO_OOP_WORK_DEFN |
duke@435 | 234 | public: |
duke@435 | 235 | MarkRefsIntoAndScanClosure(MemRegion span, |
duke@435 | 236 | ReferenceProcessor* rp, |
duke@435 | 237 | CMSBitMap* bit_map, |
duke@435 | 238 | CMSBitMap* mod_union_table, |
coleenp@548 | 239 | CMSMarkStack* mark_stack, |
duke@435 | 240 | CMSCollector* collector, |
duke@435 | 241 | bool should_yield, |
duke@435 | 242 | bool concurrent_precleaning); |
coleenp@548 | 243 | virtual void do_oop(oop* p); |
coleenp@548 | 244 | virtual void do_oop(narrowOop* p); |
coleenp@548 | 245 | inline void do_oop_nv(oop* p) { MarkRefsIntoAndScanClosure::do_oop_work(p); } |
coleenp@548 | 246 | inline void do_oop_nv(narrowOop* p) { MarkRefsIntoAndScanClosure::do_oop_work(p); } |
coleenp@4037 | 247 | |
duke@435 | 248 | Prefetch::style prefetch_style() { |
duke@435 | 249 | return Prefetch::do_read; |
duke@435 | 250 | } |
duke@435 | 251 | void set_freelistLock(Mutex* m) { |
duke@435 | 252 | _freelistLock = m; |
duke@435 | 253 | } |
duke@435 | 254 | |
duke@435 | 255 | private: |
duke@435 | 256 | inline void do_yield_check(); |
duke@435 | 257 | void do_yield_work(); |
duke@435 | 258 | bool take_from_overflow_list(); |
duke@435 | 259 | }; |
duke@435 | 260 | |
duke@435 | 261 | // Tn this, the parallel avatar of MarkRefsIntoAndScanClosure, the revisit |
duke@435 | 262 | // stack and the bitMap are shared, so access needs to be suitably |
duke@435 | 263 | // sycnhronized. An OopTaskQueue structure, supporting efficient |
duke@435 | 264 | // workstealing, replaces a CMSMarkStack for storing grey objects. |
coleenp@4037 | 265 | class Par_MarkRefsIntoAndScanClosure: public CMSOopsInGenClosure { |
coleenp@548 | 266 | private: |
coleenp@548 | 267 | MemRegion _span; |
coleenp@548 | 268 | CMSBitMap* _bit_map; |
coleenp@548 | 269 | OopTaskQueue* _work_queue; |
coleenp@548 | 270 | const uint _low_water_mark; |
coleenp@548 | 271 | Par_PushAndMarkClosure _par_pushAndMarkClosure; |
coleenp@548 | 272 | protected: |
coleenp@548 | 273 | DO_OOP_WORK_DEFN |
duke@435 | 274 | public: |
duke@435 | 275 | Par_MarkRefsIntoAndScanClosure(CMSCollector* collector, |
duke@435 | 276 | MemRegion span, |
duke@435 | 277 | ReferenceProcessor* rp, |
duke@435 | 278 | CMSBitMap* bit_map, |
coleenp@4037 | 279 | OopTaskQueue* work_queue); |
coleenp@548 | 280 | virtual void do_oop(oop* p); |
coleenp@548 | 281 | virtual void do_oop(narrowOop* p); |
coleenp@548 | 282 | inline void do_oop_nv(oop* p) { Par_MarkRefsIntoAndScanClosure::do_oop_work(p); } |
coleenp@548 | 283 | inline void do_oop_nv(narrowOop* p) { Par_MarkRefsIntoAndScanClosure::do_oop_work(p); } |
coleenp@4037 | 284 | |
duke@435 | 285 | Prefetch::style prefetch_style() { |
duke@435 | 286 | return Prefetch::do_read; |
duke@435 | 287 | } |
duke@435 | 288 | void trim_queue(uint size); |
duke@435 | 289 | }; |
duke@435 | 290 | |
duke@435 | 291 | // This closure is used during the concurrent marking phase |
duke@435 | 292 | // following the first checkpoint. Its use is buried in |
duke@435 | 293 | // the closure MarkFromRootsClosure. |
coleenp@4037 | 294 | class PushOrMarkClosure: public CMSOopClosure { |
coleenp@548 | 295 | private: |
coleenp@4037 | 296 | CMSCollector* _collector; |
coleenp@548 | 297 | MemRegion _span; |
coleenp@548 | 298 | CMSBitMap* _bitMap; |
coleenp@548 | 299 | CMSMarkStack* _markStack; |
coleenp@548 | 300 | HeapWord* const _finger; |
coleenp@548 | 301 | MarkFromRootsClosure* const |
coleenp@548 | 302 | _parent; |
coleenp@548 | 303 | protected: |
coleenp@548 | 304 | DO_OOP_WORK_DEFN |
duke@435 | 305 | public: |
duke@435 | 306 | PushOrMarkClosure(CMSCollector* cms_collector, |
duke@435 | 307 | MemRegion span, |
duke@435 | 308 | CMSBitMap* bitMap, |
coleenp@548 | 309 | CMSMarkStack* markStack, |
coleenp@548 | 310 | HeapWord* finger, |
duke@435 | 311 | MarkFromRootsClosure* parent); |
coleenp@548 | 312 | virtual void do_oop(oop* p); |
coleenp@548 | 313 | virtual void do_oop(narrowOop* p); |
coleenp@548 | 314 | inline void do_oop_nv(oop* p) { PushOrMarkClosure::do_oop_work(p); } |
coleenp@548 | 315 | inline void do_oop_nv(narrowOop* p) { PushOrMarkClosure::do_oop_work(p); } |
ysr@1376 | 316 | |
duke@435 | 317 | // Deal with a stack overflow condition |
duke@435 | 318 | void handle_stack_overflow(HeapWord* lost); |
duke@435 | 319 | private: |
duke@435 | 320 | inline void do_yield_check(); |
duke@435 | 321 | }; |
duke@435 | 322 | |
duke@435 | 323 | // A parallel (MT) version of the above. |
duke@435 | 324 | // This closure is used during the concurrent marking phase |
duke@435 | 325 | // following the first checkpoint. Its use is buried in |
duke@435 | 326 | // the closure Par_MarkFromRootsClosure. |
coleenp@4037 | 327 | class Par_PushOrMarkClosure: public CMSOopClosure { |
coleenp@548 | 328 | private: |
coleenp@4037 | 329 | CMSCollector* _collector; |
duke@435 | 330 | MemRegion _whole_span; |
duke@435 | 331 | MemRegion _span; // local chunk |
duke@435 | 332 | CMSBitMap* _bit_map; |
duke@435 | 333 | OopTaskQueue* _work_queue; |
duke@435 | 334 | CMSMarkStack* _overflow_stack; |
duke@435 | 335 | HeapWord* const _finger; |
duke@435 | 336 | HeapWord** const _global_finger_addr; |
coleenp@548 | 337 | Par_MarkFromRootsClosure* const |
coleenp@548 | 338 | _parent; |
coleenp@548 | 339 | protected: |
coleenp@548 | 340 | DO_OOP_WORK_DEFN |
duke@435 | 341 | public: |
duke@435 | 342 | Par_PushOrMarkClosure(CMSCollector* cms_collector, |
coleenp@548 | 343 | MemRegion span, |
coleenp@548 | 344 | CMSBitMap* bit_map, |
coleenp@548 | 345 | OopTaskQueue* work_queue, |
coleenp@548 | 346 | CMSMarkStack* mark_stack, |
coleenp@548 | 347 | HeapWord* finger, |
coleenp@548 | 348 | HeapWord** global_finger_addr, |
coleenp@548 | 349 | Par_MarkFromRootsClosure* parent); |
coleenp@548 | 350 | virtual void do_oop(oop* p); |
coleenp@548 | 351 | virtual void do_oop(narrowOop* p); |
coleenp@548 | 352 | inline void do_oop_nv(oop* p) { Par_PushOrMarkClosure::do_oop_work(p); } |
coleenp@548 | 353 | inline void do_oop_nv(narrowOop* p) { Par_PushOrMarkClosure::do_oop_work(p); } |
ysr@1376 | 354 | |
duke@435 | 355 | // Deal with a stack overflow condition |
duke@435 | 356 | void handle_stack_overflow(HeapWord* lost); |
duke@435 | 357 | private: |
duke@435 | 358 | inline void do_yield_check(); |
duke@435 | 359 | }; |
duke@435 | 360 | |
duke@435 | 361 | // For objects in CMS generation, this closure marks |
duke@435 | 362 | // given objects (transitively) as being reachable/live. |
duke@435 | 363 | // This is currently used during the (weak) reference object |
ysr@887 | 364 | // processing phase of the CMS final checkpoint step, as |
ysr@887 | 365 | // well as during the concurrent precleaning of the discovered |
ysr@887 | 366 | // reference lists. |
coleenp@4037 | 367 | class CMSKeepAliveClosure: public CMSOopClosure { |
coleenp@548 | 368 | private: |
coleenp@4037 | 369 | CMSCollector* _collector; |
ysr@578 | 370 | const MemRegion _span; |
duke@435 | 371 | CMSMarkStack* _mark_stack; |
duke@435 | 372 | CMSBitMap* _bit_map; |
ysr@887 | 373 | bool _concurrent_precleaning; |
coleenp@548 | 374 | protected: |
coleenp@548 | 375 | DO_OOP_WORK_DEFN |
duke@435 | 376 | public: |
duke@435 | 377 | CMSKeepAliveClosure(CMSCollector* collector, MemRegion span, |
ysr@887 | 378 | CMSBitMap* bit_map, CMSMarkStack* mark_stack, |
coleenp@4037 | 379 | bool cpc); |
ysr@887 | 380 | bool concurrent_precleaning() const { return _concurrent_precleaning; } |
coleenp@548 | 381 | virtual void do_oop(oop* p); |
coleenp@548 | 382 | virtual void do_oop(narrowOop* p); |
coleenp@548 | 383 | inline void do_oop_nv(oop* p) { CMSKeepAliveClosure::do_oop_work(p); } |
coleenp@548 | 384 | inline void do_oop_nv(narrowOop* p) { CMSKeepAliveClosure::do_oop_work(p); } |
duke@435 | 385 | }; |
duke@435 | 386 | |
coleenp@4037 | 387 | class CMSInnerParMarkAndPushClosure: public CMSOopClosure { |
coleenp@548 | 388 | private: |
coleenp@4037 | 389 | CMSCollector* _collector; |
duke@435 | 390 | MemRegion _span; |
duke@435 | 391 | OopTaskQueue* _work_queue; |
duke@435 | 392 | CMSBitMap* _bit_map; |
coleenp@548 | 393 | protected: |
coleenp@548 | 394 | DO_OOP_WORK_DEFN |
duke@435 | 395 | public: |
duke@435 | 396 | CMSInnerParMarkAndPushClosure(CMSCollector* collector, |
duke@435 | 397 | MemRegion span, CMSBitMap* bit_map, |
jmasa@1370 | 398 | OopTaskQueue* work_queue); |
coleenp@548 | 399 | virtual void do_oop(oop* p); |
coleenp@548 | 400 | virtual void do_oop(narrowOop* p); |
coleenp@548 | 401 | inline void do_oop_nv(oop* p) { CMSInnerParMarkAndPushClosure::do_oop_work(p); } |
coleenp@548 | 402 | inline void do_oop_nv(narrowOop* p) { CMSInnerParMarkAndPushClosure::do_oop_work(p); } |
duke@435 | 403 | }; |
duke@435 | 404 | |
duke@435 | 405 | // A parallel (MT) version of the above, used when |
duke@435 | 406 | // reference processing is parallel; the only difference |
duke@435 | 407 | // is in the do_oop method. |
coleenp@4037 | 408 | class CMSParKeepAliveClosure: public CMSOopClosure { |
coleenp@548 | 409 | private: |
duke@435 | 410 | MemRegion _span; |
duke@435 | 411 | OopTaskQueue* _work_queue; |
duke@435 | 412 | CMSBitMap* _bit_map; |
coleenp@548 | 413 | CMSInnerParMarkAndPushClosure |
coleenp@548 | 414 | _mark_and_push; |
duke@435 | 415 | const uint _low_water_mark; |
duke@435 | 416 | void trim_queue(uint max); |
coleenp@548 | 417 | protected: |
coleenp@548 | 418 | DO_OOP_WORK_DEFN |
duke@435 | 419 | public: |
duke@435 | 420 | CMSParKeepAliveClosure(CMSCollector* collector, MemRegion span, |
coleenp@4037 | 421 | CMSBitMap* bit_map, OopTaskQueue* work_queue); |
coleenp@548 | 422 | virtual void do_oop(oop* p); |
coleenp@548 | 423 | virtual void do_oop(narrowOop* p); |
duke@435 | 424 | }; |
stefank@2314 | 425 | |
stefank@2314 | 426 | #endif // SHARE_VM_GC_IMPLEMENTATION_CONCURRENTMARKSWEEP_CMSOOPCLOSURES_HPP |