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/*! \file panic.c
* Routines for panic handling. */
/*
* (C) 2010 by Sylvain Munaut <tnt@246tNt.com>
*
* 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.
*
*/
/*! \addtogroup utils
* @{
* \file panic.c */
#include <unistd.h>
#include <osmocom/core/panic.h>
#include <osmocom/core/backtrace.h>
#include "../config.h"
static osmo_panic_handler_t osmo_panic_handler = (void*)0;
#ifndef PANIC_INFLOOP
#include <stdio.h>
#include <stdlib.h>
static void osmo_panic_default(const char *fmt, va_list args)
{
vfprintf(stderr, fmt, args);
osmo_generate_backtrace();
abort();
}
#else
static void osmo_panic_default(const char *fmt, va_list args)
{
while (1);
}
#endif
/*! Terminate the current program with a panic
*
* You can call this function in case some severely unexpected situation
* is detected and the program is supposed to terminate in a way that
* reports the fact that it terminates.
*
* The application can register a panic handler function using \ref
* osmo_set_panic_handler. If it doesn't, a default panic handler
* function is called automatically.
*
* The default function on most systems will generate a backtrace and
* then abort() the process.
*/
void osmo_panic(const char *fmt, ...)
{
va_list args;
va_start(args, fmt);
if (osmo_panic_handler)
osmo_panic_handler(fmt, args);
else
osmo_panic_default(fmt, args);
va_end(args);
/* not reached, but make compiler believe we really never return */
#ifndef PANIC_INFLOOP
exit(2342);
#else
while (1) ;
#endif
}
/*! Set the panic handler
* \param[in] h New panic handler function
*
* This changes the panic handling function from the currently active
* function to a new call-back function supplied by the caller.
*/
void osmo_set_panic_handler(osmo_panic_handler_t h)
{
osmo_panic_handler = h;
}
/*! @} */
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