tests/test-thrd_exit.c

   1 /* Test of thrd_exit () function.
   2    Copyright (C) 2011-2025 Free Software Foundation, Inc.
   3
   4    This program is free software: you can redistribute it and/or modify
   5    it under the terms of the GNU General Public License as published by
   6    the Free Software Foundation, either version 3 of the License, or
   7    (at your option) any later version.
   8
   9    This program 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
  12    GNU General Public License for more details.
  13
  14    You should have received a copy of the GNU General Public License
  15    along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
  16
  17 /* Written by Bruno Haible <bruno@clisp.org>, 2011.  */
  18
  19 #include <config.h>
  20
  21 #include <threads.h>
  22
  23 #include <stdio.h>
  24 #include <string.h>
  25
  26 #include "macros.h"
  27
  28 /* This test is like test-thrd_create.c, except that is uses a thrd_exit()
  29    invocation instead of 'return' to provide the thread's result code.  */
  30
  31 static thrd_t main_thread_before;
  32 static thrd_t main_thread_after;
  33 static thrd_t worker_thread;
  34
  35 #define MAGIC 1266074729
  36 static volatile int work_done;
  37
  38 static int
  39 worker_thread_func (void *arg)
  40 {
  41   work_done = 1;
  42   thrd_exit (MAGIC);
  43   return 0xBADC0DE;
  44 }
  45
  46 int
  47 main ()
  48 {
  49   main_thread_before = thrd_current ();
  50
  51   if (thrd_create (&worker_thread, worker_thread_func, NULL) == thrd_success)
  52     {
  53       int ret;
  54
  55       /* Check that thrd_current () has the same value before than after the
  56          first call to thrd_create ().  */
  57       main_thread_after = thrd_current ();
  58       ASSERT (memcmp (&main_thread_before, &main_thread_after,
  59                       sizeof (thrd_t))
  60               == 0);
  61
  62       ASSERT (thrd_join (worker_thread, &ret) == thrd_success);
  63
  64       /* Check the return value of the thread.  */
  65       ASSERT (ret == MAGIC);
  66
  67       /* Check that worker_thread_func () has finished executing.  */
  68       ASSERT (work_done);
  69
  70       return test_exit_status;
  71     }
  72   else
  73     {
  74       fputs ("thrd_create failed\n", stderr);
  75       return 1;
  76     }
  77 }