nptl/tst-basic3.c

   1 /* Copyright (C) 2003-2017 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Contributed by Ulrich Drepper <drepper@redhat.com>, 2003.
   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    <http://www.gnu.org/licenses/>.  */
  18
  19 #include <pthread.h>
  20 #include <signal.h>
  21 #include <stdio.h>
  22 #include <stdlib.h>
  23 #include <unistd.h>
  24
  25
  26 static int nrunning = 1;
  27
  28
  29 static void
  30 final_test (void)
  31 {
  32   puts ("final_test has been called");
  33
  34 #define THE_SIGNAL SIGUSR1
  35   kill (getpid (), SIGUSR1);
  36 }
  37
  38
  39 static void *
  40 tf (void *a)
  41 {
  42   if (pthread_join ((pthread_t) a, NULL) != 0)
  43     {
  44       printf ("join failed while %d are running\n", nrunning);
  45       _exit (1);
  46     }
  47
  48   printf ("%2d left\n", --nrunning);
  49
  50   return NULL;
  51 }
  52
  53
  54 int
  55 do_test (void)
  56 {
  57 #define N 20
  58   pthread_t t[N];
  59   pthread_t last = pthread_self ();
  60   int i;
  61
  62   atexit (final_test);
  63
  64   printf ("starting %d + 1 threads\n", N);
  65   for (i = 0; i < N; ++i)
  66     {
  67       if (pthread_create (&t[i], NULL, tf, (void *) last) != 0)
  68         {
  69           puts ("create failed");
  70           _exit (1);
  71         }
  72
  73       ++nrunning;
  74
  75       last = t[i];
  76     }
  77
  78   printf ("%2d left\n", --nrunning);
  79
  80   pthread_exit (NULL);
  81 }
  82
  83
  84 #define EXPECTED_SIGNAL THE_SIGNAL
  85 #define TEST_FUNCTION do_test ()
  86 #include "../test-skeleton.c"