nptl/cleanup.c

   1 /* Copyright (C) 2002-2024 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 <stdlib.h>
  19 #include "pthreadP.h"
  20 #include <shlib-compat.h>
  21
  22 void
  23 __cleanup_fct_attribute
  24 ___pthread_register_cancel (__pthread_unwind_buf_t *buf)
  25 {
  26   struct pthread_unwind_buf *ibuf = (struct pthread_unwind_buf *) buf;
  27   struct pthread *self = THREAD_SELF;
  28
  29   /* Store old info.  */
  30   ibuf->priv.data.prev = THREAD_GETMEM (self, cleanup_jmp_buf);
  31   ibuf->priv.data.cleanup = THREAD_GETMEM (self, cleanup);
  32
  33   /* Store the new cleanup handler info.  */
  34   THREAD_SETMEM (self, cleanup_jmp_buf, (struct pthread_unwind_buf *) buf);
  35 }
  36 versioned_symbol (libc, ___pthread_register_cancel,
  37                   __pthread_register_cancel, GLIBC_2_34);
  38 libc_hidden_ver (___pthread_register_cancel, __pthread_register_cancel)
  39
  40 #if OTHER_SHLIB_COMPAT (libpthread, GLIBC_2_3_3, GLIBC_2_34)
  41 compat_symbol (libpthread, ___pthread_register_cancel,
  42                __pthread_register_cancel, GLIBC_2_3_3);
  43 #endif
  44
  45
  46 void
  47 __cleanup_fct_attribute
  48 ___pthread_unregister_cancel (__pthread_unwind_buf_t *buf)
  49 {
  50   struct pthread_unwind_buf *ibuf = (struct pthread_unwind_buf *) buf;
  51
  52   THREAD_SETMEM (THREAD_SELF, cleanup_jmp_buf, ibuf->priv.data.prev);
  53 }
  54 versioned_symbol (libc, ___pthread_unregister_cancel,
  55                   __pthread_unregister_cancel, GLIBC_2_34);
  56 libc_hidden_ver (___pthread_unregister_cancel, __pthread_unregister_cancel)
  57
  58 #if OTHER_SHLIB_COMPAT (libpthread, GLIBC_2_3_3, GLIBC_2_34)
  59 compat_symbol (libpthread, ___pthread_unregister_cancel,
  60                __pthread_unregister_cancel, GLIBC_2_3_3);
  61 #endif