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/******************************************************************************
* SOFA, Simulation Open-Framework Architecture, version 1.0 beta 4 *
* (c) 2006-2009 MGH, INRIA, USTL, UJF, CNRS *
* *
* This library is free software; you can redistribute it and/or modify it *
* under the terms of the GNU Lesser General Public License as published by *
* the Free Software Foundation; either version 2.1 of the License, or (at *
* your option) any later version. *
* *
* This library 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 Lesser General Public License *
* for more details. *
* *
* You should have received a copy of the GNU Lesser General Public License *
* along with this library; if not, write to the Free Software Foundation, *
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. *
*******************************************************************************
* SOFA :: Framework *
* *
* Authors: M. Adam, J. Allard, B. Andre, P-J. Bensoussan, S. Cotin, C. Duriez,*
* H. Delingette, F. Falipou, F. Faure, S. Fonteneau, L. Heigeas, C. Mendoza, *
* M. Nesme, P. Neumann, J-P. de la Plata Alcade, F. Poyer and F. Roy *
* *
* Contact information: contact@sofa-framework.org *
******************************************************************************/
#include <sofa/helper/BackTrace.h>
#if !defined(WIN32)
#include <signal.h>
#endif
#if !defined(WIN32) && !defined(__APPLE__)
#include <execinfo.h>
#include <unistd.h>
#endif
#ifdef __GNUC__
#include <cxxabi.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
namespace sofa
{
namespace helper
{
/// Dump current backtrace to stderr.
/// Currently only works on Linux. NOOP on other architectures.
void BackTrace::dump()
{
#if defined(__GNUC__) && !defined(__APPLE__) && !defined(WIN32)
void *array[128];
int size = backtrace(array, sizeof(array) / sizeof(array[0]));
if (size > 0)
{
char** symbols = backtrace_symbols(array, size);
if (symbols != NULL)
{
for (int i = 0; i < size; ++i)
{
char* symbol = symbols[i];
// Decode the method's name to a more readable form if possible
char *beginmangled = strrchr(symbol,'(');
if (beginmangled != NULL)
{
++beginmangled;
char *endmangled = strrchr(beginmangled ,')');
if (endmangled != NULL)
{
// remove +0x[0-9a-fA-f]* suffix
char* savedend = endmangled;
while((endmangled[-1]>='0' && endmangled[-1]<='9') ||
(endmangled[-1]>='a' && endmangled[-1]<='f') ||
(endmangled[-1]>='A' && endmangled[-1]<='F'))
--endmangled;
if (endmangled[-1]=='x' && endmangled[-2]=='0' && endmangled[-3]=='+')
endmangled -= 3;
else
endmangled = savedend; // suffix not found
char* name = (char*)malloc(endmangled-beginmangled+1);
memcpy(name, beginmangled, endmangled-beginmangled);
name[endmangled-beginmangled] = '\0';
int status;
char* realname = abi::__cxa_demangle(name, 0, 0, &status);
if (realname != NULL)
{
free(name);
name = realname;
}
fprintf(stderr,"-> %.*s%s%s\n",(int)(beginmangled-symbol),symbol,name,endmangled);
free(name);
}
else
fprintf(stderr,"-> %s\n",symbol);
}
else
fprintf(stderr,"-> %s\n",symbol);
}
free(symbols);
}
else
{
backtrace_symbols_fd(array, size, STDERR_FILENO);
}
}
#endif
}
/// Enable dump of backtrace when a signal is received.
/// Useful to have information about crashes without starting a debugger (as it is not always easy to do, i.e. for parallel/distributed applications).
/// Currently only works on Linux. NOOP on other architectures
void BackTrace::autodump()
{
#if !defined(WIN32)
signal(SIGSEGV, BackTrace::sig);
signal(SIGILL, BackTrace::sig);
signal(SIGFPE, BackTrace::sig);
signal(SIGPIPE, BackTrace::sig);
signal(SIGINT, BackTrace::sig);
signal(SIGTERM, BackTrace::sig);
#endif
}
void BackTrace::sig(int sig)
{
#if !defined(WIN32)
fprintf(stderr,"\n########## SIG %d ##########\n",sig);
dump();
signal(sig,SIG_DFL);
raise(sig);
#else
fprintf(stderr,"\nERROR: BackTrace::sig(%d) not supported.\n",sig);
#endif
}
} // namespace helper
} // namespace sofa
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