lib/libc_r/uthread/uthread_clean.c

   1 /*
   2  * Copyright (c) 1995 John Birrell <jb@cimlogic.com.au>.
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. All advertising materials mentioning features or use of this software
  14  *    must display the following acknowledgement:
  15  *      This product includes software developed by John Birrell.
  16  * 4. Neither the name of the author nor the names of any co-contributors
  17  *    may be used to endorse or promote products derived from this software
  18  *    without specific prior written permission.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL AND CONTRIBUTORS ``AS IS'' AND
  21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  23  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  30  * SUCH DAMAGE.
  31  *
  32  * $FreeBSD: src/lib/libc_r/uthread/uthread_clean.c,v 1.4.2.2 2002/10/22 14:44:02 fjoe Exp $
  33  * $DragonFly: src/lib/libc_r/uthread/uthread_clean.c,v 1.3 2005/05/30 20:50:53 joerg Exp $
  34  */
  35 #include <signal.h>
  36 #include <errno.h>
  37 #include <stdlib.h>
  38 #include <pthread.h>
  39 #include "pthread_private.h"
  40
  41 void
  42 _pthread_cleanup_push(void (*routine) (void *), void *routine_arg)
  43 {
  44         struct pthread  *curthread = _get_curthread();
  45         struct pthread_cleanup *new;
  46
  47         if ((new = (struct pthread_cleanup *) malloc(sizeof(struct pthread_cleanup))) != NULL) {
  48                 new->routine = routine;
  49                 new->routine_arg = routine_arg;
  50                 new->next = curthread->cleanup;
  51
  52                 curthread->cleanup = new;
  53         }
  54 }
  55
  56 void
  57 _pthread_cleanup_pop(int execute)
  58 {
  59         struct pthread  *curthread = _get_curthread();
  60         struct pthread_cleanup *old;
  61
  62         if ((old = curthread->cleanup) != NULL) {
  63                 curthread->cleanup = old->next;
  64                 if (execute) {
  65                         old->routine(old->routine_arg);
  66                 }
  67                 free(old);
  68         }
  69 }
  70
  71 __strong_reference(_pthread_cleanup_push, pthread_cleanup_push);
  72 __strong_reference(_pthread_cleanup_pop, pthread_cleanup_pop);