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6770608: G1: Mutator thread can flush barrier and satb queues during safepoint
6660573: G1: BigApps Failure : guarantee(satb_mq_set.completed_buffers_num() == 0,"invariant")
Summary: When exiting a mutator thread is removed from the thread list before it has a chance to flush its SATB and barrier queues. If GC happens at this moment the objects that are refererred from these queues can be moved, which will case a crash. The fix is simply to flush the buffers before removing a thread from the list.
Reviewed-by: jcoomes, tonyp
author | iveresov |
---|---|
date | Fri, 14 Nov 2008 14:23:05 -0800 |
parents | a61af66fc99e |
children | 23862fc517bb |
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# # Copyright 2006 Sun Microsystems, Inc. All Rights Reserved. # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. # # This code is free software; you can redistribute it and/or modify it # under the terms of the GNU General Public License version 2 only, as # published by the Free Software Foundation. # # This code is distributed in the hope that it will be useful, but WITHOUT # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or # FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License # version 2 for more details (a copy is included in the LICENSE file that # accompanied this code). # # You should have received a copy of the GNU General Public License version # 2 along with this work; if not, write to the Free Software Foundation, # Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. # # Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, # CA 95054 USA or visit www.sun.com if you need additional information or # have any questions. # # # JPRT rule to build this workspace JPRT_ARCHIVE_BUNDLE=$(ABS_OUTPUTDIR)/$(JPRT_BUILD_FLAVOR)-bundle.zip ifdef JPRT_BUILD_VERSION MILESTONE=$(JPRT_BUILD_VERSION) endif jprt_build_product: all_product copy_product_jdk export_product_jdk ( $(CD) $(JDK_IMAGE_DIR) && \ $(ZIPEXE) -q -r $(JPRT_ARCHIVE_BUNDLE) . ) jprt_build_fastdebug: all_fastdebug copy_fastdebug_jdk export_fastdebug_jdk ( $(CD) $(JDK_IMAGE_DIR)/fastdebug && \ $(ZIPEXE) -q -r $(JPRT_ARCHIVE_BUNDLE) . ) jprt_build_debug: all_debug copy_debug_jdk export_debug_jdk ( $(CD) $(JDK_IMAGE_DIR)/debug && \ $(ZIPEXE) -q -r $(JPRT_ARCHIVE_BUNDLE) . ) .PHONY: jprt_build_product jprt_build_fastdebug jprt_build_debug