1  /* Copyright (C) 2003-2023 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 <pthread.h>
      19  #include <signal.h>
      20  #include <stdio.h>
      21  #include <stdlib.h>
      22  
      23  
      24  static pthread_cond_t c = PTHREAD_COND_INITIALIZER;
      25  static pthread_mutex_t m = PTHREAD_MUTEX_INITIALIZER;
      26  static pthread_barrier_t b;
      27  
      28  static void *
      29  tf (void *a)
      30  {
      31    if (pthread_mutex_lock (&m) != 0)
      32      {
      33        puts ("child: mutex_lock failed");
      34        exit (1);
      35      }
      36  
      37    int e = pthread_barrier_wait (&b);
      38    if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD)
      39      {
      40        puts ("child: barrier_wait failed");
      41        exit (1);
      42      }
      43  
      44    /* This call should never return.  */
      45    pthread_cond_wait (&c, &m);
      46  
      47    return NULL;
      48  }
      49  
      50  
      51  int
      52  do_test (void)
      53  {
      54    pthread_t th;
      55  
      56    if (pthread_barrier_init (&b, NULL, 2) != 0)
      57      {
      58        puts ("barrier_init failed");
      59        exit (1);
      60      }
      61  
      62    if (pthread_create (&th, NULL, tf, NULL) != 0)
      63      {
      64        puts ("create failed");
      65        exit (1);
      66      }
      67  
      68    int e = pthread_barrier_wait (&b);
      69    if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD)
      70      {
      71        puts ("barrier_wait failed");
      72        exit (1);
      73      }
      74  
      75    if (pthread_mutex_lock (&m) != 0)
      76      {
      77        puts ("mutex_lock failed");
      78        exit (1);
      79      }
      80  
      81    /* Send the thread a signal which it doesn't catch and which will
      82       cause the process to terminate.  */
      83    if (pthread_kill (th, SIGUSR1) != 0)
      84      {
      85        puts ("kill failed");
      86        exit (1);
      87      }
      88  
      89    /* This call should never return.  */
      90    pthread_join (th, NULL);
      91  
      92    return 0;
      93  }
      94  
      95  
      96  #define EXPECTED_SIGNAL SIGUSR1
      97  #define TEST_FUNCTION do_test ()
      98  #include "../test-skeleton.c"