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