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src/share/vm/gc_implementation/g1/g1_specialized_oop_closures.hpp@6cb8e9df7174 (annotated)
src/share/vm/gc_implementation/g1/g1_specialized_oop_closures.hpp
Tue, 04 Aug 2009 16:00:17 -0700
- author
- johnc
- date
- Tue, 04 Aug 2009 16:00:17 -0700
- changeset 1325
- 6cb8e9df7174
- parent 1280
- df6caf649ff7
- child 1696
- 0414c1049f15
- permissions
- -rw-r--r--
6819077: G1: first GC thread coming late into the GC.
Summary: The first worker thread is delayed when entering the GC because it clears the card count table that is used in identifying hot cards. Replace the card count table with a dynamically sized evicting hash table that includes an epoch based counter.
Reviewed-by: iveresov, 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 | // The following OopClosure types get specialized versions of |
| ysr@777 | 26 | // "oop_oop_iterate" that invoke the closures' do_oop methods |
| ysr@777 | 27 | // non-virtually, using a mechanism defined in this file. Extend these |
| ysr@777 | 28 | // macros in the obvious way to add specializations for new closures. |
| ysr@777 | 29 | |
| ysr@777 | 30 | // Forward declarations. |
| ysr@777 | 31 | enum G1Barrier { |
| ysr@777 | 32 | G1BarrierNone, G1BarrierRS, G1BarrierEvac |
| ysr@777 | 33 | }; |
| ysr@777 | 34 | |
| tonyp@961 | 35 | template<bool do_gen_barrier, G1Barrier barrier, |
| tonyp@961 | 36 | bool do_mark_forwardee, bool skip_cset_test> |
| ysr@777 | 37 | class G1ParCopyClosure; |
| ysr@777 | 38 | class G1ParScanClosure; |
| ysr@777 | 39 | |
| ysr@1280 | 40 | typedef G1ParCopyClosure<false, G1BarrierEvac, false, true> G1ParScanHeapEvacClosure; |
| ysr@777 | 41 | |
| ysr@777 | 42 | class FilterIntoCSClosure; |
| ysr@777 | 43 | class FilterOutOfRegionClosure; |
| ysr@777 | 44 | class FilterInHeapRegionAndIntoCSClosure; |
| ysr@777 | 45 | class FilterAndMarkInHeapRegionAndIntoCSClosure; |
| ysr@777 | 46 | |
| ysr@777 | 47 | #ifdef FURTHER_SPECIALIZED_OOP_OOP_ITERATE_CLOSURES |
| ysr@777 | 48 | #error "FURTHER_SPECIALIZED_OOP_OOP_ITERATE_CLOSURES already defined." |
| ysr@777 | 49 | #endif |
| ysr@777 | 50 | |
| ysr@777 | 51 | #define FURTHER_SPECIALIZED_OOP_OOP_ITERATE_CLOSURES(f) \ |
| ysr@777 | 52 | f(G1ParScanHeapEvacClosure,_nv) \ |
| ysr@777 | 53 | f(G1ParScanClosure,_nv) \ |
| ysr@777 | 54 | f(FilterIntoCSClosure,_nv) \ |
| ysr@777 | 55 | f(FilterOutOfRegionClosure,_nv) \ |
| ysr@777 | 56 | f(FilterInHeapRegionAndIntoCSClosure,_nv) \ |
| ysr@1280 | 57 | f(FilterAndMarkInHeapRegionAndIntoCSClosure,_nv) |
| ysr@777 | 58 | |
| ysr@777 | 59 | #ifdef FURTHER_SPECIALIZED_SINCE_SAVE_MARKS_CLOSURES |
| ysr@777 | 60 | #error "FURTHER_SPECIALIZED_SINCE_SAVE_MARKS_CLOSURES already defined." |
| ysr@777 | 61 | #endif |
| ysr@777 | 62 | |
| ysr@777 | 63 | #define FURTHER_SPECIALIZED_SINCE_SAVE_MARKS_CLOSURES(f) |
