awesome/common/backtrace.c
Uli Schlachter 46048332b0 Don't fail if execinfo is not available
Previously, cmake aborted when execinfo was not found. With this commit the
backtrace code is just disabled when execinfo is not available.

Signed-off-by: Uli Schlachter <psychon@znc.in>
2010-08-12 20:14:56 +02:00

62 lines
1.6 KiB
C

/*
* common/backtrace.c - Backtrace handling functions
*
* Copyright © 2009 Julien Danjou <julien@danjou.info>
*
* 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.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
*/
#include "config.h"
#include "common/backtrace.h"
#ifdef HAS_EXECINFO
#include <execinfo.h>
#endif
#define MAX_STACK_SIZE 32
/** Get a backtrace.
* \param buf The buffer to fill with backtrace.
*/
void
backtrace_get(buffer_t *buf)
{
buffer_init(buf);
#ifdef HAS_EXECINFO
void *stack[MAX_STACK_SIZE];
char **bt;
int stack_size;
stack_size = backtrace(stack, countof(stack));
bt = backtrace_symbols(stack, stack_size);
if(bt)
{
for(int i = 0; i < stack_size; i++)
{
if(i > 0)
buffer_addsl(buf, "\n");
buffer_adds(buf, bt[i]);
}
p_delete(&bt);
}
else
#endif
buffer_addsl(buf, "Cannot get backtrace symbols.");
}
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