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7048782: CMS: assert(last_chunk_index_to_check<= last_chunk_index) failed: parCardTableModRefBS.cpp:359 Summary: The LNC array is sized before the start of a scavenge, while the heap may expand during a scavenge. With CMS, the last block of an arbitrary suffice of the LNC array may expand due to coalition with the expansion delta. We now take care not to attempt access past the end of the LNC array. LNC array code will be cleaned up and suitably encapsulated as part of the forthcoming performance RFE 7043675. Reviewed-by: brutisso
author ysr
date Thu, 02 Jun 2011 10:23:36 -0700
parents c18cbe5936b8
children d2a62e0f25eb
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1 #
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2 # Copyright (c) 1999, 2008, Oracle and/or its affiliates. All rights reserved.
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3 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 #
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5 # This code is free software; you can redistribute it and/or modify it
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6 # under the terms of the GNU General Public License version 2 only, as
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7 # published by the Free Software Foundation.
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8 #
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9 # This code is distributed in the hope that it will be useful, but WITHOUT
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10 # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 # FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 # version 2 for more details (a copy is included in the LICENSE file that
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13 # accompanied this code).
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14 #
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15 # You should have received a copy of the GNU General Public License version
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16 # 2 along with this work; if not, write to the Free Software Foundation,
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17 # Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 #
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19 # Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 # or visit www.oracle.com if you need additional information or have any
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21 # questions.
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22 #
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23 #
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25 # Sets make macros for making debug version of VM
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27 # Compiler specific DEBUG_CFLAGS are passed in from gcc.make, sparcWorks.make
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28 DEBUG_CFLAGS/DEFAULT= $(DEBUG_CFLAGS)
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29 DEBUG_CFLAGS/BYFILE = $(DEBUG_CFLAGS/$@)$(DEBUG_CFLAGS/DEFAULT$(DEBUG_CFLAGS/$@))
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30 CFLAGS += $(DEBUG_CFLAGS/BYFILE)
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32 # Set the environment variable HOTSPARC_GENERIC to "true"
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33 # to inhibit the effect of the previous line on CFLAGS.
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35 # Linker mapfile
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36 MAPFILE = $(GAMMADIR)/make/linux/makefiles/mapfile-vers-debug
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38 G_SUFFIX = _g
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39 VERSION = debug
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40 SYSDEFS += -DASSERT -DDEBUG
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41 PICFLAGS = DEFAULT