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/* $OpenBSD: thread_atexit.c,v 1.2 2019/06/02 01:03:01 guenther Exp $ */
/*
* Copyright (c) 2017 Mark Kettenis <kettenis@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 <dlfcn.h>
#include <stdlib.h>
#include <tib.h>
#include "atexit.h"
__weak_alias(__cxa_thread_atexit, __cxa_thread_atexit_impl);
int
__cxa_thread_atexit_impl(void (*func)(void *), void *arg, void *dso)
{
struct thread_atexit_fn *fnp;
struct tib *tib = TIB_GET();
fnp = calloc(1, sizeof(struct thread_atexit_fn));
if (fnp == NULL)
return -1;
dlctl(NULL, DL_REFERENCE, dso);
fnp->func = func;
fnp->arg = arg;
fnp->next = tib->tib_atexit;
tib->tib_atexit = fnp;
return 0;
}
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