1  /* Test of gl_thread_create () macro.
       2     Copyright (C) 2011-2022 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 "glthread/thread.h"
      22  
      23  #include <stdio.h>
      24  #include <string.h>
      25  
      26  #include "macros.h"
      27  
      28  static gl_thread_t main_thread_before;
      29  static gl_thread_t main_thread_after;
      30  static gl_thread_t worker_thread;
      31  
      32  static int dummy;
      33  static volatile int work_done;
      34  
      35  static void *
      36  worker_thread_func (void *arg)
      37  {
      38    work_done = 1;
      39    return &dummy;
      40  }
      41  
      42  int
      43  main ()
      44  {
      45    main_thread_before = gl_thread_self ();
      46  
      47    if (glthread_create (&worker_thread, worker_thread_func, NULL) == 0)
      48      {
      49        void *ret;
      50  
      51        /* Check that gl_thread_self () has the same value before than after the
      52           first call to gl_thread_create ().  */
      53        main_thread_after = gl_thread_self ();
      54        ASSERT (memcmp (&main_thread_before, &main_thread_after,
      55                        sizeof (gl_thread_t))
      56                == 0);
      57  
      58        gl_thread_join (worker_thread, &ret);
      59  
      60        /* Check the return value of the thread.  */
      61        ASSERT (ret == &dummy);
      62  
      63        /* Check that worker_thread_func () has finished executing.  */
      64        ASSERT (work_done);
      65  
      66        return 0;
      67      }
      68    else
      69      {
      70  #if USE_ISOC_THREADS || USE_POSIX_THREADS || USE_ISOC_AND_POSIX_THREADS || USE_WINDOWS_THREADS
      71        fputs ("glthread_create failed\n", stderr);
      72        return 1;
      73  #else
      74        fputs ("Skipping test: multithreading not enabled\n", stderr);
      75        return 77;
      76  #endif
      77      }
      78  }