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src/share/vm/gc_implementation/g1/concurrentG1Refine.hpp@315a5d70b295 (annotated)
src/share/vm/gc_implementation/g1/concurrentG1Refine.hpp
Mon, 11 May 2009 16:30:56 -0700
- author
- iveresov
- date
- Mon, 11 May 2009 16:30:56 -0700
- changeset 1229
- 315a5d70b295
- parent 1014
- 0fbdb4381b99
- child 1230
- 215f81b4d9b3
- permissions
- -rw-r--r--
6484957: G1: parallel concurrent refinement
6826318: G1: remove traversal-based refinement code
Summary: Removed traversal-based refinement code as it's no longer used. Made the concurrent refinement (queue-based) parallel.
Reviewed-by: tonyp
| ysr@777 | 1 | /* |
| xdono@1014 | 2 | * Copyright 2001-2009 Sun Microsystems, Inc. All Rights Reserved. |
| ysr@777 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| ysr@777 | 4 | * |
| ysr@777 | 5 | * This code is free software; you can redistribute it and/or modify it |
| ysr@777 | 6 | * under the terms of the GNU General Public License version 2 only, as |
| ysr@777 | 7 | * published by the Free Software Foundation. |
| ysr@777 | 8 | * |
| ysr@777 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| ysr@777 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| ysr@777 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| ysr@777 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
| ysr@777 | 13 | * accompanied this code). |
| ysr@777 | 14 | * |
| ysr@777 | 15 | * You should have received a copy of the GNU General Public License version |
| ysr@777 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
| ysr@777 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| ysr@777 | 18 | * |
| ysr@777 | 19 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| ysr@777 | 20 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| ysr@777 | 21 | * have any questions. |
| ysr@777 | 22 | * |
| ysr@777 | 23 | */ |
| ysr@777 | 24 | |
| ysr@777 | 25 | // Forward decl |
| ysr@777 | 26 | class ConcurrentG1RefineThread; |
| ysr@777 | 27 | class G1RemSet; |
| ysr@777 | 28 | |
| apetrusenko@984 | 29 | class ConcurrentG1Refine: public CHeapObj { |
| iveresov@1229 | 30 | ConcurrentG1RefineThread** _threads; |
| iveresov@1229 | 31 | int _n_threads; |
| ysr@777 | 32 | |
| ysr@777 | 33 | // The cache for card refinement. |
| ysr@777 | 34 | bool _use_cache; |
| ysr@777 | 35 | bool _def_use_cache; |
| ysr@777 | 36 | size_t _n_periods; |
| ysr@777 | 37 | size_t _total_cards; |
| ysr@777 | 38 | size_t _total_travs; |
| ysr@777 | 39 | |
| ysr@777 | 40 | unsigned char* _card_counts; |
| ysr@777 | 41 | unsigned _n_card_counts; |
| ysr@777 | 42 | const jbyte* _ct_bot; |
| ysr@777 | 43 | unsigned* _cur_card_count_histo; |
| ysr@777 | 44 | unsigned* _cum_card_count_histo; |
| ysr@777 | 45 | jbyte** _hot_cache; |
| ysr@777 | 46 | int _hot_cache_size; |
| ysr@777 | 47 | int _n_hot; |
| ysr@777 | 48 | int _hot_cache_idx; |
| ysr@777 | 49 | |
| ysr@777 | 50 | // Returns the count of this card after incrementing it. |
| ysr@777 | 51 | int add_card_count(jbyte* card_ptr); |
| ysr@777 | 52 | |
| ysr@777 | 53 | void print_card_count_histo_range(unsigned* histo, int from, int to, |
| ysr@777 | 54 | float& cum_card_pct, |
| ysr@777 | 55 | float& cum_travs_pct); |
| ysr@777 | 56 | public: |
| ysr@777 | 57 | ConcurrentG1Refine(); |
| ysr@777 | 58 | ~ConcurrentG1Refine(); |
| ysr@777 | 59 | |
| ysr@777 | 60 | void init(); // Accomplish some initialization that has to wait. |
| iveresov@1229 | 61 | void stop(); |
| ysr@777 | 62 | |
| iveresov@1229 | 63 | // Iterate over the conc refine threads |
| iveresov@1229 | 64 | void threads_do(ThreadClosure *tc); |
| ysr@777 | 65 | |
| ysr@777 | 66 | // If this is the first entry for the slot, writes into the cache and |
| ysr@777 | 67 | // returns NULL. If it causes an eviction, returns the evicted pointer. |
| ysr@777 | 68 | // Otherwise, its a cache hit, and returns NULL. |
| ysr@777 | 69 | jbyte* cache_insert(jbyte* card_ptr); |
| ysr@777 | 70 | |
| ysr@777 | 71 | // Process the cached entries. |
| ysr@777 | 72 | void clean_up_cache(int worker_i, G1RemSet* g1rs); |
| ysr@777 | 73 | |
| ysr@777 | 74 | // Discard entries in the hot cache. |
| ysr@777 | 75 | void clear_hot_cache() { |
| ysr@777 | 76 | _hot_cache_idx = 0; _n_hot = 0; |
| ysr@777 | 77 | } |
| ysr@777 | 78 | |
| ysr@777 | 79 | bool hot_cache_is_empty() { return _n_hot == 0; } |
| ysr@777 | 80 | |
| ysr@777 | 81 | bool use_cache() { return _use_cache; } |
| ysr@777 | 82 | void set_use_cache(bool b) { |
| ysr@777 | 83 | if (b) _use_cache = _def_use_cache; |
| ysr@777 | 84 | else _use_cache = false; |
| ysr@777 | 85 | } |
| ysr@777 | 86 | |
| ysr@777 | 87 | void clear_and_record_card_counts(); |
| ysr@777 | 88 | void print_final_card_counts(); |
| ysr@777 | 89 | }; |
