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// ------------------------------------------------------------------------
// kvu_debug.cpp: Debug helper functions
// Copyright (C) 2009 Kai Vehmanen
//
// Attributes:
// eca-style-version: 3
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// This program 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 General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
// ------------------------------------------------------------------------
// References
// - glibc manual (section "33.1 Backtraces"
// http://www.gnu.org/software/libc/manual/html_node/index.html#toc_Debugging-Support
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <iostream>
#ifdef HAVE_FEATURES_H
#include <features.h>
#endif
using namespace std;
/* backtrace is an GNU glibc extension and it was
* first added to glibc 2.1 */
#if defined(__GLIBC_PREREQ)
#if __GLIBC_PREREQ(2,1) && defined(HAVE_EXECINFO_H)
#include <execinfo.h>
#include <stdio.h>
#include <stdlib.h>
void kvu_print_backtrace_stderr(void)
{
const int NUM_STACK_FRAMES = 10;
void *array[NUM_STACK_FRAMES];
size_t size;
char **strings;
size_t i;
size = backtrace (array, NUM_STACK_FRAMES);
strings = backtrace_symbols (array, size);
cerr <<
"-----------------------------------------------------------------------"
<< endl
<< "Function call backtrace ("
<< size
<< " frames):" << endl;
for (i = 0; i < size; i++)
cerr << " " << i << ": " << strings[i] << endl;
free (strings);
cerr <<
"-----------------------------------------------------------------------"
<< endl;
}
#endif
#else
/* non-glibc case */
void kvu_print_backtrace_stderr(void)
{
cout << "ERROR (kvu_print_backtrace_stderr): backtrace printing only supported with glibc" << endl;
}
#endif
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