1  /* Copyright (C) 2002-2023 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