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annotate src/os/linux/vm/decoder_linux.cpp @ 20338:8d5f66b42c53

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8055525: Bigapp weblogic+medrec fails to startup after JDK-8038423 Summary: If large pages are enabled and configured in Linux, the VM always pre-commits the entire space. The VM fails verification of the commit of the initial heap because some internal data structure marked all memory pages of the heap as committed during initialization. This makes the code think that we attempted a double-commit during first allocation of the heap. Remove the initial marking of memory pages of the heap to committed. Reviewed-by: mgerdin
author tschatzl
date Wed, 20 Aug 2014 14:34:40 +0200
parents e7cbc95179c4
children 4ca6dc0799b6
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1 /*
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2 * Copyright (c) 1997, 2012, 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
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
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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 #include "prims/jvm.h"
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26 #include "utilities/decoder_elf.hpp"
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28 #include <cxxabi.h>
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30 bool ElfDecoder::demangle(const char* symbol, char *buf, int buflen) {
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31 int status;
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32 char* result;
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33 size_t size = (size_t)buflen;
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34
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35 #ifdef PPC64
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36 // On PPC64 ElfDecoder::decode() may return a dot (.) prefixed name
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37 // (see elfFuncDescTable.hpp for details)
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38 if (symbol && *symbol == '.') symbol += 1;
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39 #endif
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41 // Don't pass buf to __cxa_demangle. In case of the 'buf' is too small,
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42 // __cxa_demangle will call system "realloc" for additional memory, which
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43 // may use different malloc/realloc mechanism that allocates 'buf'.
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44 if ((result = abi::__cxa_demangle(symbol, NULL, NULL, &status)) != NULL) {
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45 jio_snprintf(buf, buflen, "%s", result);
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46 // call c library's free
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47 ::free(result);
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48 return true;
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49 }
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50 return false;
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51 }
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