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annotate src/os/linux/vm/decoder_linux.cpp @ 24233:8128b98d4736 jvmci-0.36

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Crash in rebuild_cpu_to_node_map (JDK-8165153)
author Doug Simon <doug.simon@oracle.com>
date Mon, 18 Sep 2017 18:02:23 +0200
parents 52b4284cb496
children
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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
2d4762ec74af 7003748: Decode C stack frames when symbols are presented (PhoneHome project)
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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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