minix/lib/libc/stdlib/quick_exit.c
Lionel Sambuc 84d9c625bf Synchronize on NetBSD-CVS (2013/12/1 12:00:00 UTC)
- Fix for possible unset uid/gid in toproto
 - Fix for default mtree style
 - Update libelf
 - Importing libexecinfo
 - Resynchronize GCC, mpc, gmp, mpfr
 - build.sh: Replace params with show-params.
     This has been done as the make target has been renamed in the same
     way, while a new target named params has been added. This new
     target generates a file containing all the parameters, instead of
     printing it on the console.
 - Update test48 with new etc/services (Fix by Ben Gras <ben@minix3.org)
     get getservbyport() out of the inner loop

Change-Id: Ie6ad5226fa2621ff9f0dee8782ea48f9443d2091
2014-07-28 17:05:06 +02:00

94 lines
2.7 KiB
C

/* $NetBSD: quick_exit.c,v 1.1 2013/04/26 18:29:55 christos Exp $ */
/*-
* Copyright (c) 2011 David Chisnall
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 AUTHOR OR CONTRIBUTORS 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.
*
* $FreeBSD: src/lib/libc/stdlib/quick_exit.c,v 1.4 2012/11/17 01:49:41 svnexp Exp $
*/
#include <sys/cdefs.h>
__RCSID("$NetBSD: quick_exit.c,v 1.1 2013/04/26 18:29:55 christos Exp $");
#include "namespace.h"
#include "reentrant.h"
#include <stdlib.h>
/**
* Linked list of quick exit handlers. This is simpler than the atexit()
* version, because it is not required to support C++ destructors or
* DSO-specific cleanups.
*/
struct quick_exit_handler {
struct quick_exit_handler *next;
void (*cleanup)(void);
};
/**
* Lock protecting the handlers list.
*/
#ifdef _REENTRANT
extern mutex_t __atexit_mutex;
#endif
/**
* Stack of cleanup handlers. These will be invoked in reverse order when
*/
static struct quick_exit_handler *handlers;
int
at_quick_exit(void (*func)(void))
{
struct quick_exit_handler *h;
h = malloc(sizeof(*h));
if (NULL == h)
return 1;
h->cleanup = func;
#ifdef _REENTRANT
mutex_lock(&__atexit_mutex);
#endif
h->next = handlers;
handlers = h;
#ifdef _REENTRANT
mutex_unlock(&__atexit_mutex);
#endif
return 0;
}
void
quick_exit(int status)
{
struct quick_exit_handler *h;
/*
* XXX: The C++ spec requires us to call std::terminate if there is an
* exception here.
*/
for (h = handlers; NULL != h; h = h->next)
(*h->cleanup)();
_Exit(status);
}