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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
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1 #
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2 # Copyright (c) 2004, 2010, 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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24
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25 # Must also specify if CPU is little endian
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26 CFLAGS += -DVM_LITTLE_ENDIAN
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27
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28 #
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29 # Special case flags for compilers and compiler versions on amd64.
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30 #
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31 ifeq ("${Platform_compiler}", "sparcWorks")
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32
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33 # Temporary until SS10 C++ compiler is fixed
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34 OPT_CFLAGS/generateOptoStub.o = -xO2
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35 # Temporary util SS12u1 C++ compiler is fixed
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36 OPT_CFLAGS/c1_LinearScan.o = -xO2
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37 else
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38
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39 ifeq ("${Platform_compiler}", "gcc")
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40 # gcc
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41 # The serviceability agent relies on frame pointer (%rbp) to walk thread stack
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42 CFLAGS += -fno-omit-frame-pointer
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43
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44 else
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45 # error
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46 _JUNK2_ := $(shell echo >&2 \
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47 "*** ERROR: this compiler is not yet supported by this code base!")
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48 @exit 1
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49 endif
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50 endif