htl/pt-self.c

   1 /* Get calling thread's ID.
   2    Copyright (C) 2000-2022 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   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 <pthread.h>
  20
  21 #include <pt-internal.h>
  22
  23 /* Return the thread ID of the calling thread.  */
  24 pthread_t
  25 __pthread_self (void)
  26 {
  27   struct __pthread *self;
  28
  29   if (___pthread_self == NULL)
  30     /* We are not initialized yet, we are the first thread.  */
  31     return 1;
  32
  33   self = _pthread_self ();
  34   assert (self != NULL);
  35
  36   return self->thread;
  37 }
  38
  39 weak_alias (__pthread_self, pthread_self);