/*      $OpenBSD: aa.c,v 1.1 2014/11/23 08:46:49 guenther Exp $       */

/*
 * Copyright (c) 2014 Philip Guenther <guenther@openbsd.org>
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#include <stdlib.h>
#include <stdio.h>
#include <pthread.h>

#define CALLBACK(file, name)                                    \
        static void name(void)                                  \
        {                                                       \
                fprintf(file, "libaa "#name"\n");               \
                fflush(file);                                   \
        }

CALLBACK(stdout, cleanup)

void
aa(void)
{
        atexit(cleanup);
}

static FILE *otherf;

CALLBACK(stdout, atfork_prepare)
CALLBACK(stdout, atfork_parent)
CALLBACK(otherf, atfork_child)

void
aa_atfork(FILE *f)
{
        otherf = f;
        pthread_atfork(atfork_prepare, atfork_parent, atfork_child);
}