nptl/cleanup.c

   1 /* Copyright (C) 2002, 2003 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, write to the Free
  17    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  18    02111-1307 USA.  */
  19
  20 #include <stdlib.h>
  21 #include "pthreadP.h"
  22
  23
  24 void
  25 __cleanup_fct_attribute
  26 __pthread_register_cancel (__pthread_unwind_buf_t *buf)
  27 {
  28   struct pthread_unwind_buf *ibuf = (struct pthread_unwind_buf *) buf;
  29   struct pthread *self = THREAD_SELF;
  30
  31   /* Store old info.  */
  32   ibuf->priv.data.prev = THREAD_GETMEM (self, cleanup_jmp_buf);
  33   ibuf->priv.data.cleanup = THREAD_GETMEM (self, cleanup);
  34
  35   /* Store the new cleanup handler info.  */
  36   THREAD_SETMEM (self, cleanup_jmp_buf, buf);
  37 }
  38
  39
  40 void
  41 __cleanup_fct_attribute
  42 __pthread_unregister_cancel (__pthread_unwind_buf_t *buf)
  43 {
  44   struct pthread_unwind_buf *ibuf = (struct pthread_unwind_buf *) buf;
  45
  46   THREAD_SETMEM (THREAD_SELF, cleanup_jmp_buf, ibuf->priv.data.prev);
  47 }