nptl/cleanup.c

   1 /* Copyright (C) 2002-2020 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, see
  17    <https://www.gnu.org/licenses/>.  */
  18
  19 #include <stdlib.h>
  20 #include "pthreadP.h"
  21
  22
  23 void
  24 __cleanup_fct_attribute
  25 __pthread_register_cancel (__pthread_unwind_buf_t *buf)
  26 {
  27   struct pthread_unwind_buf *ibuf = (struct pthread_unwind_buf *) buf;
  28   struct pthread *self = THREAD_SELF;
  29
  30   /* Store old info.  */
  31   ibuf->priv.data.prev = THREAD_GETMEM (self, cleanup_jmp_buf);
  32   ibuf->priv.data.cleanup = THREAD_GETMEM (self, cleanup);
  33
  34   /* Store the new cleanup handler info.  */
  35   THREAD_SETMEM (self, cleanup_jmp_buf, (struct pthread_unwind_buf *) buf);
  36 }
  37 hidden_def (__pthread_register_cancel)
  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 }
  48 hidden_def (__pthread_unregister_cancel)