nptl/pthread_exit.c

   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 <stdlib.h>
  19 #include "pthreadP.h"
  20 #include <unwind-link.h>
  21 #include <stdio.h>
  22 #include <gnu/lib-names.h>
  23
  24 void
  25 __pthread_exit (void *value)
  26 {
  27   {
  28     struct unwind_link *unwind_link = __libc_unwind_link_get ();
  29     if (unwind_link == NULL)
  30       __libc_fatal (LIBGCC_S_SO
  31                     " must be installed for pthread_exit to work\n");
  32   }
  33
  34   THREAD_SETMEM (THREAD_SELF, result, value);
  35
  36   __do_cancel ();
  37 }
  38 libc_hidden_def (__pthread_exit)
  39 weak_alias (__pthread_exit, pthread_exit)
  40
  41 /* Ensure that the unwinder is always linked in (the __pthread_unwind
  42    reference from __do_cancel is weak).  Use ___pthread_unwind_next
  43    (three underscores) to produce a strong reference to the same
  44    file.  */
  45 PTHREAD_STATIC_FN_REQUIRE (___pthread_unwind_next)