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/*! \file backtrace.c
* Routines related to generating call back traces. */
/*
* (C) 2009 by Holger Hans Peter Freyther <zecke@selfish.org>
* (C) 2012 by Harald Welte <laforge@gnumonks.org>
*
* All Rights Reserved
*
* SPDX-License-Identifier: GPL-2.0+
*
* 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 <stdio.h>
#include <stdlib.h>
#include <osmocom/core/utils.h>
#include <osmocom/core/logging.h>
#include "config.h"
#ifdef HAVE_EXECINFO_H
#include <execinfo.h>
static void _osmo_backtrace(int use_printf, int subsys, int level)
{
int i, nptrs;
void *buffer[100];
char **strings;
nptrs = backtrace(buffer, ARRAY_SIZE(buffer));
if (use_printf)
printf("backtrace() returned %d addresses\n", nptrs);
else
LOGP(subsys, level, "backtrace() returned %d addresses\n",
nptrs);
strings = backtrace_symbols(buffer, nptrs);
if (!strings)
return;
for (i = 1; i < nptrs; i++) {
if (use_printf)
printf("%s\n", strings[i]);
else
LOGP(subsys, level, "\t%s\n", strings[i]);
}
free(strings);
}
/*! Generate and print a call back-trace
*
* This function will generate a function call back-trace of the
* current process and print it to stdout. */
void osmo_generate_backtrace(void)
{
_osmo_backtrace(1, 0, 0);
}
/*! Generate and log a call back-trace
* \param[in] subsys Logging sub-system
* \param[in] level Logging level
*
* This function will generate a function call back-trace of the
* current process and log it to the specified subsystem and
* level using the libosmocore logging subsystem */
void osmo_log_backtrace(int subsys, int level)
{
_osmo_backtrace(0, subsys, level);
}
#else
void osmo_generate_backtrace(void)
{
printf("This platform has no backtrace function\n");
}
void osmo_log_backtrace(int subsys, int level)
{
LOGP(subsys, level, "This platform has no backtrace function\n");
}
#endif
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