nptl/tst-kill6.c

   1 /* Copyright (C) 2003 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, write to the Free
  17    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  18    02111-1307 USA.  */
  19
  20 #include <errno.h>
  21 #include <pthread.h>
  22 #include <semaphore.h>
  23 #include <signal.h>
  24 #include <stdio.h>
  25 #include <stdlib.h>
  26 #include <unistd.h>
  27
  28
  29 static pthread_t receiver;
  30 static sem_t sem;
  31 static pthread_barrier_t b;
  32
  33 static void
  34 handler (int sig)
  35 {
  36   if (sig != SIGUSR1)
  37     {
  38       write (STDOUT_FILENO, "wrong signal\n", 13);
  39       _exit (1);
  40     }
  41
  42   if (pthread_self () != receiver)
  43     {
  44       write (STDOUT_FILENO, "not the intended receiver\n", 26);
  45       _exit (1);
  46     }
  47
  48   if (sem_post (&sem) != 0)
  49     {
  50       write (STDOUT_FILENO, "sem_post failed\n", 16);
  51       _exit (1);
  52     }
  53 }
  54
  55
  56 static void *
  57 tf (void *a)
  58 {
  59   int e = pthread_barrier_wait (&b);
  60   if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD)
  61     {
  62       puts ("child: barrier_wait failed");
  63       exit (1);
  64     }
  65
  66   return NULL;
  67 }
  68
  69
  70 int
  71 do_test (void)
  72 {
  73   struct sigaction sa;
  74   sigemptyset (&sa.sa_mask);
  75   sa.sa_flags = 0;
  76   sa.sa_handler = handler;
  77   if (sigaction (SIGUSR1, &sa, NULL) != 0)
  78     {
  79       puts ("sigaction failed");
  80       exit (1);
  81     }
  82
  83 #define N 20
  84
  85   if (pthread_barrier_init (&b, NULL, N + 1) != 0)
  86     {
  87       puts ("barrier_init failed");
  88       exit (1);
  89     }
  90
  91   pthread_t th[N];
  92   int i;
  93   for (i = 0; i < N; ++i)
  94     if (pthread_create (&th[i], NULL, tf, NULL) != 0)
  95       {
  96         puts ("create failed");
  97         exit (1);
  98       }
  99
 100   if (sem_init (&sem, 0, 0) != 0)
 101     {
 102       puts ("sem_init failed");
 103       exit (1);
 104     }
 105
 106   for (i = 0; i < N * 10; ++i)
 107     {
 108       receiver = th[i % N];
 109
 110       if (pthread_kill (receiver, SIGUSR1) != 0)
 111         {
 112           puts ("kill failed");
 113           exit (1);
 114         }
 115
 116       if (TEMP_FAILURE_RETRY (sem_wait (&sem)) != 0)
 117         {
 118           puts ("sem_wait failed");
 119           exit (1);
 120         }
 121     }
 122
 123   int e = pthread_barrier_wait (&b);
 124   if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD)
 125     {
 126       puts ("barrier_wait failed");
 127       exit (1);
 128     }
 129
 130   for (i = 0; i < N; ++i)
 131     if (pthread_join (th[i], NULL) != 0)
 132       {
 133         puts ("join failed");
 134         exit (1);
 135       }
 136
 137   return 0;
 138 }
 139
 140
 141 #define TEST_FUNCTION do_test ()
 142 #include "../test-skeleton.c"