Mercurial > jdk8-mips64-public > hotspot / annotate
make/pic.make@00b023ae2d78 (annotated)
make/pic.make
Thu, 20 Nov 2008 12:27:41 -0800
- author
- ysr
- date
- Thu, 20 Nov 2008 12:27:41 -0800
- changeset 887
- 00b023ae2d78
- parent 663
- f232d7d67023
- child 1907
- c18cbe5936b8
- permissions
- -rw-r--r--
6722113: CMS: Incorrect overflow handling during precleaning of Reference lists
Summary: When we encounter marking stack overflow during precleaning of Reference lists, we were using the overflow list mechanism, which can cause problems on account of mutating the mark word of the header because of conflicts with mutator accesses and updates of that field. Instead we should use the usual mechanism for overflow handling in concurrent phases, namely dirtying of the card on which the overflowed object lies. Since precleaning effectively does a form of discovered list processing, albeit with discovery enabled, we needed to adjust some code to be correct in the face of interleaved processing and discovery.
Reviewed-by: apetrusenko, jcoomes
| xlu@663 | 1 | # |
| xlu@663 | 2 | # Copyright 2006-2007 Sun Microsystems, Inc. All Rights Reserved. |
| xlu@663 | 3 | # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| xlu@663 | 4 | # |
| xlu@663 | 5 | # This code is free software; you can redistribute it and/or modify it |
| xlu@663 | 6 | # under the terms of the GNU General Public License version 2 only, as |
| xlu@663 | 7 | # published by the Free Software Foundation. |
| xlu@663 | 8 | # |
| xlu@663 | 9 | # This code is distributed in the hope that it will be useful, but WITHOUT |
| xlu@663 | 10 | # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| xlu@663 | 11 | # FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| xlu@663 | 12 | # version 2 for more details (a copy is included in the LICENSE file that |
| xlu@663 | 13 | # accompanied this code). |
| xlu@663 | 14 | # |
| xlu@663 | 15 | # You should have received a copy of the GNU General Public License version |
| xlu@663 | 16 | # 2 along with this work; if not, write to the Free Software Foundation, |
| xlu@663 | 17 | # Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| xlu@663 | 18 | # |
| xlu@663 | 19 | # Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| xlu@663 | 20 | # CA 95054 USA or visit www.sun.com if you need additional information or |
| xlu@663 | 21 | # have any questions. |
| xlu@663 | 22 | # |
| xlu@663 | 23 | # |
| xlu@663 | 24 | |
| xlu@663 | 25 | # A list of object files built without the platform specific PIC flags, e.g. |
| xlu@663 | 26 | # -fPIC on linux. Performance measurements show that by compiling GC related |
| xlu@663 | 27 | # code, we could significantly reduce the GC pause time on 32 bit Linux/Unix |
| xlu@663 | 28 | # platforms. See 6454213 for more details. |
| xlu@663 | 29 | include $(GAMMADIR)/make/scm.make |
| xlu@663 | 30 | |
| xlu@663 | 31 | ifneq ($(OSNAME), windows) |
| xlu@663 | 32 | ifndef LP64 |
| xlu@663 | 33 | NONPIC_DIRS = memory oops gc_implementation gc_interface |
| xlu@663 | 34 | NONPIC_DIRS := $(foreach dir,$(NONPIC_DIRS), $(GAMMADIR)/src/share/vm/$(dir)) |
| xlu@663 | 35 | # Look for source files under NONPIC_DIRS |
| xlu@663 | 36 | NONPIC_FILES := $(foreach dir,$(NONPIC_DIRS),\ |
| xlu@663 | 37 | $(shell find $(dir) \( $(SCM_DIRS) \) -prune -o \ |
| xlu@663 | 38 | -name '*.cpp' -print)) |
| xlu@663 | 39 | NONPIC_OBJ_FILES := $(notdir $(subst .cpp,.o,$(NONPIC_FILES))) |
| xlu@663 | 40 | endif |
| xlu@663 | 41 | endif |
