Mercurial > jdk8-mips64-public > hotspot / file comparison
comparison: src/share/vm/gc_implementation/g1/heapRegionRemSet.hpp
src/share/vm/gc_implementation/g1/heapRegionRemSet.hpp
- changeset 2493
- 97ba643ea3ed
- parent 2314
- f95d63e2154a
- child 2974
- e8b0b0392037
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| 2492:a672e43650cc | 2493:97ba643ea3ed |
|---|---|
| 1 /* | 1 /* |
| 2 * Copyright (c) 2001, 2010, Oracle and/or its affiliates. All rights reserved. | 2 * Copyright (c) 2001, 2011, Oracle and/or its affiliates. All rights reserved. |
| 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | 4 * |
| 5 * This code is free software; you can redistribute it and/or modify it | 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 | 6 * under the terms of the GNU General Public License version 2 only, as |
| 7 * published by the Free Software Foundation. | 7 * published by the Free Software Foundation. |
| 36 class HeapRegion; | 36 class HeapRegion; |
| 37 class HeapRegionRemSetIterator; | 37 class HeapRegionRemSetIterator; |
| 38 class PosParPRT; | 38 class PosParPRT; |
| 39 class SparsePRT; | 39 class SparsePRT; |
| 40 | 40 |
| 41 // Essentially a wrapper around SparsePRTCleanupTask. See | |
| 42 // sparsePRT.hpp for more details. | |
| 43 class HRRSCleanupTask : public SparsePRTCleanupTask { | |
| 44 }; | |
| 41 | 45 |
| 42 // The "_coarse_map" is a bitmap with one bit for each region, where set | 46 // The "_coarse_map" is a bitmap with one bit for each region, where set |
| 43 // bits indicate that the corresponding region may contain some pointer | 47 // bits indicate that the corresponding region may contain some pointer |
| 44 // into the owning region. | 48 // into the owning region. |
| 45 | 49 |
| 154 void clear_fcc(); | 158 void clear_fcc(); |
| 155 | 159 |
| 156 // "from_hr" is being cleared; remove any entries from it. | 160 // "from_hr" is being cleared; remove any entries from it. |
| 157 void clear_incoming_entry(HeapRegion* from_hr); | 161 void clear_incoming_entry(HeapRegion* from_hr); |
| 158 | 162 |
| 163 void do_cleanup_work(HRRSCleanupTask* hrrs_cleanup_task); | |
| 164 | |
| 159 // Declare the heap size (in # of regions) to the OtherRegionsTable. | 165 // Declare the heap size (in # of regions) to the OtherRegionsTable. |
| 160 // (Uses it to initialize from_card_cache). | 166 // (Uses it to initialize from_card_cache). |
| 161 static void init_from_card_cache(size_t max_regions); | 167 static void init_from_card_cache(size_t max_regions); |
| 162 | 168 |
| 163 // Declares that only regions i s.t. 0 <= i < new_n_regs are in use. | 169 // Declares that only regions i s.t. 0 <= i < new_n_regs are in use. |
| 164 // Make sure any entries for higher regions are invalid. | 170 // Make sure any entries for higher regions are invalid. |
| 165 static void shrink_from_card_cache(size_t new_n_regs); | 171 static void shrink_from_card_cache(size_t new_n_regs); |
| 166 | 172 |
| 167 static void print_from_card_cache(); | 173 static void print_from_card_cache(); |
| 168 | |
| 169 }; | 174 }; |
| 170 | |
| 171 | 175 |
| 172 class HeapRegionRemSet : public CHeapObj { | 176 class HeapRegionRemSet : public CHeapObj { |
| 173 friend class VMStructs; | 177 friend class VMStructs; |
| 174 friend class HeapRegionRemSetIterator; | 178 friend class HeapRegionRemSetIterator; |
| 175 | 179 |
| 340 | 344 |
| 341 static void record(HeapRegion* hr, OopOrNarrowOopStar f); | 345 static void record(HeapRegion* hr, OopOrNarrowOopStar f); |
| 342 static void print_recorded(); | 346 static void print_recorded(); |
| 343 static void record_event(Event evnt); | 347 static void record_event(Event evnt); |
| 344 | 348 |
| 349 // These are wrappers for the similarly-named methods on | |
| 350 // SparsePRT. Look at sparsePRT.hpp for more details. | |
| 351 static void reset_for_cleanup_tasks(); | |
| 352 void do_cleanup_work(HRRSCleanupTask* hrrs_cleanup_task); | |
| 353 static void finish_cleanup_task(HRRSCleanupTask* hrrs_cleanup_task); | |
| 354 | |
| 345 // Run unit tests. | 355 // Run unit tests. |
| 346 #ifndef PRODUCT | 356 #ifndef PRODUCT |
| 347 static void test(); | 357 static void test(); |
| 348 #endif | 358 #endif |
| 349 | |
| 350 }; | 359 }; |
| 351 | 360 |
| 352 class HeapRegionRemSetIterator : public CHeapObj { | 361 class HeapRegionRemSetIterator : public CHeapObj { |
| 353 | 362 |
| 354 // The region over which we're iterating. | 363 // The region over which we're iterating. |
