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  #include <unistd.h>
      23  
      24  
      25  static int nrunning = 1;
      26  
      27  
      28  static void
      29  final_test (void)
      30  {
      31    puts ("final_test has been called");
      32  
      33  #define THE_SIGNAL SIGUSR1
      34    kill (getpid (), SIGUSR1);
      35  }
      36  
      37  
      38  static void *
      39  tf (void *a)
      40  {
      41    if (pthread_join ((pthread_t) a, NULL) != 0)
      42      {
      43        printf ("join failed while %d are running\n", nrunning);
      44        _exit (1);
      45      }
      46  
      47    printf ("%2d left\n", --nrunning);
      48  
      49    return NULL;
      50  }
      51  
      52  
      53  int
      54  do_test (void)
      55  {
      56  #define N 20
      57    pthread_t t[N];
      58    pthread_t last = pthread_self ();
      59    int i;
      60  
      61    atexit (final_test);
      62  
      63    printf ("starting %d + 1 threads\n", N);
      64    for (i = 0; i < N; ++i)
      65      {
      66        if (pthread_create (&t[i], NULL, tf, (void *) last) != 0)
      67  	{
      68  	  puts ("create failed");
      69  	  _exit (1);
      70  	}
      71  
      72        ++nrunning;
      73  
      74        last = t[i];
      75      }
      76  
      77    printf ("%2d left\n", --nrunning);
      78  
      79    pthread_exit (NULL);
      80  }
      81  
      82  
      83  #define EXPECTED_SIGNAL THE_SIGNAL
      84  #define TEST_FUNCTION do_test ()
      85  #include "../test-skeleton.c"