nptl/cleanup_compat.c

   1 /* Copyright (C) 2002-2022 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the License, or (at your option) any later version.
   8
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, see
  16    <https://www.gnu.org/licenses/>.  */
  17
  18 #include <shlib-compat.h>
  19 #include <stdlib.h>
  20 #include "pthreadP.h"
  21
  22 void
  23 __pthread_cleanup_push (struct _pthread_cleanup_buffer *buffer,
  24                        void (*routine) (void *), void *arg)
  25 {
  26   struct pthread *self = THREAD_SELF;
  27
  28   buffer->__routine = routine;
  29   buffer->__arg = arg;
  30   buffer->__prev = THREAD_GETMEM (self, cleanup);
  31
  32   THREAD_SETMEM (self, cleanup, buffer);
  33 }
  34 libc_hidden_def (__pthread_cleanup_push)
  35 versioned_symbol (libc, __pthread_cleanup_push, _pthread_cleanup_push,
  36                   GLIBC_2_34);
  37
  38 void
  39 __pthread_cleanup_pop (struct _pthread_cleanup_buffer *buffer, int execute)
  40 {
  41   struct pthread *self __attribute ((unused)) = THREAD_SELF;
  42
  43   THREAD_SETMEM (self, cleanup, buffer->__prev);
  44
  45   /* If necessary call the cleanup routine after we removed the
  46      current cleanup block from the list.  */
  47   if (execute)
  48     buffer->__routine (buffer->__arg);
  49 }
  50 libc_hidden_def (__pthread_cleanup_pop)
  51 versioned_symbol (libc, __pthread_cleanup_pop, _pthread_cleanup_pop,
  52                   GLIBC_2_34);
  53
  54 #if OTHER_SHLIB_COMPAT (libpthread, GLIBC_2_0, GLIBC_2_34)
  55 compat_symbol (libpthread, __pthread_cleanup_push, _pthread_cleanup_push,
  56                GLIBC_2_0);
  57 compat_symbol (libpthread, __pthread_cleanup_pop, _pthread_cleanup_pop,
  58                GLIBC_2_0);
  59 #endif