nptl/cleanup.c

   1 /* Copyright (C) 2002 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 _pthread_cleanup_push (buffer, routine, arg)
  26      struct _pthread_cleanup_buffer *buffer;
  27      void (*routine) (void *);
  28      void *arg;
  29 {
  30   struct pthread *self = THREAD_SELF;
  31
  32   buffer->__routine = routine;
  33   buffer->__arg = arg;
  34   buffer->__prev = THREAD_GETMEM (self, cleanup);
  35
  36   if (buffer->__prev != NULL && FRAME_LEFT (buffer, buffer->__prev))
  37     buffer->__prev = NULL;
  38
  39   THREAD_SETMEM (self, cleanup, buffer);
  40 }
  41 extern void _GI_pthread_cleanup_push (struct _pthread_cleanup_buffer *buffer,
  42                                       void (*routine) (void *), void *arg)
  43      attribute_hidden;
  44 strong_alias (_pthread_cleanup_push, _GI_pthread_cleanup_push)
  45
  46
  47 void
  48 _pthread_cleanup_pop (buffer, execute)
  49      struct _pthread_cleanup_buffer *buffer;
  50      int execute;
  51 {
  52   struct pthread *self __attribute ((unused)) = THREAD_SELF;
  53
  54   THREAD_SETMEM (self, cleanup, buffer->__prev);
  55
  56   /* If necessary call the cleanup routine after we removed the
  57      current cleanup block from the list.  */
  58   if (execute)
  59     buffer->__routine (buffer->__arg);
  60 }
  61 extern void _GI_pthread_cleanup_pop (struct _pthread_cleanup_buffer *buffer,
  62                                      int execute) attribute_hidden;
  63 strong_alias (_pthread_cleanup_pop, _GI_pthread_cleanup_pop)