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/* $OpenBSD: ab.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, "libab "#name"\n"); \
fflush(file); \
}
CALLBACK(stdout, cleanup)
void
ab(void)
{
atexit(cleanup);
}
static FILE *otherf;
CALLBACK(stdout, atfork_prepare)
CALLBACK(stdout, atfork_parent)
CALLBACK(otherf, atfork_child)
void
ab_atfork(FILE *f)
{
otherf = f;
pthread_atfork(atfork_prepare, atfork_parent, atfork_child);
}
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