nptl/cleanup_compat.c

   1 /* Copyright (C) 2002-2021 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 <shlib-compat.h>
  20 #include <stdlib.h>
  21 #include "pthreadP.h"
  22
  23 void
  24 __pthread_cleanup_push (struct _pthread_cleanup_buffer *buffer,
  25                        void (*routine) (void *), void *arg)
  26 {
  27   struct pthread *self = THREAD_SELF;
  28
  29   buffer->__routine = routine;
  30   buffer->__arg = arg;
  31   buffer->__prev = THREAD_GETMEM (self, cleanup);
  32
  33   THREAD_SETMEM (self, cleanup, buffer);
  34 }
  35 libc_hidden_def (__pthread_cleanup_push)
  36 versioned_symbol (libc, __pthread_cleanup_push, _pthread_cleanup_push,
  37                   GLIBC_2_34);
  38
  39 void
  40 __pthread_cleanup_pop (struct _pthread_cleanup_buffer *buffer, int execute)
  41 {
  42   struct pthread *self __attribute ((unused)) = THREAD_SELF;
  43
  44   THREAD_SETMEM (self, cleanup, buffer->__prev);
  45
  46   /* If necessary call the cleanup routine after we removed the
  47      current cleanup block from the list.  */
  48   if (execute)
  49     buffer->__routine (buffer->__arg);
  50 }
  51 libc_hidden_def (__pthread_cleanup_pop)
  52 versioned_symbol (libc, __pthread_cleanup_pop, _pthread_cleanup_pop,
  53                   GLIBC_2_34);
  54
  55 #if OTHER_SHLIB_COMPAT (libpthread, GLIBC_2_0, GLIBC_2_34)
  56 compat_symbol (libpthread, __pthread_cleanup_push, _pthread_cleanup_push,
  57                GLIBC_2_0);
  58 compat_symbol (libpthread, __pthread_cleanup_pop, _pthread_cleanup_pop,
  59                GLIBC_2_0);
  60 #endif