tcpreplay/src/common/abort.c

/* $Id: abort.c 1543 2006-07-29 06:20:25Z aturner $ */

/*
 * Copyright (c) 2005 Aaron Turner.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the names of the copyright owners nor the names of its
 *    contributors may be used to endorse or promote products derived from
 *    this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
 * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
 * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include "config.h"
#include "defines.h"
#include "common.h"

#include <signal.h>
#include <stdlib.h>

extern volatile int didsig;
extern COUNTER bytes_sent, pkts_sent, failed;
extern struct timeval begin, end;

#ifdef HAVE_TCPDUMP
extern tcpdump_t tcpdump;
#endif

#ifdef DEBUG
extern int debug;
#endif


/*
 * we've got a race condition, this is our workaround
 */
void
catcher(int signo)
{
    /* stdio in signal handlers causes a race condition, instead set a flag */
    if (signo == SIGINT)
        didsig = 1;
}

/*
 * when we're sending only one packet at a time via <ENTER>
 * then there's no race and we can quit now
 * also called when didsig is set
 */
void
break_now(int signo)
{

    if (signo == SIGINT || didsig) {
        printf("\n");

#ifdef HAVE_TCPDUMP
        /* kill tcpdump child if required */
        if (tcpdump.pid)
            if (kill(tcpdump.pid, SIGTERM) != 0)
                kill(tcpdump.pid, SIGKILL);
#endif

        packet_stats(&begin, &end, bytes_sent, pkts_sent, failed);
        exit(1);
    }
}

/*
 Local Variables:
 mode:c
 indent-tabs-mode:nil
 c-basic-offset:4
 End:
*/