Mercurial > jdk8-mips64-public > hotspot / annotate
src/share/vm/memory/barrierSet.cpp@6aa7255741f3 (annotated)
src/share/vm/memory/barrierSet.cpp
Thu, 03 Dec 2009 15:01:57 -0800
- author
- ysr
- date
- Thu, 03 Dec 2009 15:01:57 -0800
- changeset 1526
- 6aa7255741f3
- parent 1280
- df6caf649ff7
- child 1907
- c18cbe5936b8
- permissions
- -rw-r--r--
6906727: UseCompressedOops: some card-marking fixes related to object arrays
Summary: Introduced a new write_ref_array(HeapWords* start, size_t count) method that does the requisite MemRegion range calculation so (some of the) clients of the erstwhile write_ref_array(MemRegion mr) do not need to worry. This removed all external uses of array_size(), which was also simplified and made private. Asserts were added to catch other possible issues. Further, less essential, fixes stemming from this investigation are deferred to CR 6904516 (to follow shortly in hs17).
Reviewed-by: kvn, coleenp, jmasa
| ysr@777 | 1 | /* |
| ysr@777 | 2 | * Copyright 1997-2006 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 | # include "incls/_precompiled.incl" |
| ysr@777 | 26 | # include "incls/_barrierSet.cpp.incl" |
| ysr@777 | 27 | |
| ysr@1280 | 28 | // count is number of array elements being written |
| ysr@777 | 29 | void BarrierSet::static_write_ref_array_pre(HeapWord* start, size_t count) { |
| ysr@1280 | 30 | assert(count <= (size_t)max_intx, "count too large"); |
| ysr@1280 | 31 | #if 0 |
| ysr@1280 | 32 | warning("Pre: \t" INTPTR_FORMAT "[" SIZE_FORMAT "]\t", |
| ysr@1280 | 33 | start, count); |
| ysr@1280 | 34 | #endif |
| ysr@1280 | 35 | if (UseCompressedOops) { |
| ysr@1280 | 36 | Universe::heap()->barrier_set()->write_ref_array_pre((narrowOop*)start, (int)count); |
| ysr@1280 | 37 | } else { |
| ysr@1280 | 38 | Universe::heap()->barrier_set()->write_ref_array_pre( (oop*)start, (int)count); |
| ysr@1280 | 39 | } |
| ysr@777 | 40 | } |
| ysr@777 | 41 | |
| ysr@1280 | 42 | // count is number of array elements being written |
| ysr@777 | 43 | void BarrierSet::static_write_ref_array_post(HeapWord* start, size_t count) { |
| ysr@1526 | 44 | // simply delegate to instance method |
| ysr@1526 | 45 | Universe::heap()->barrier_set()->write_ref_array(start, count); |
| ysr@777 | 46 | } |
