nptl/tst-kill6.c

   1 /* Copyright (C) 2003-2016 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 <errno.h>
  20 #include <pthread.h>
  21 #include <semaphore.h>
  22 #include <signal.h>
  23 #include <stdio.h>
  24 #include <stdlib.h>
  25 #include <unistd.h>
  26
  27
  28 static pthread_t receiver;
  29 static sem_t sem;
  30 static pthread_barrier_t b;
  31
  32 static void
  33 handler (int sig)
  34 {
  35   if (sig != SIGUSR1)
  36     {
  37       write (STDOUT_FILENO, "wrong signal\n", 13);
  38       _exit (1);
  39     }
  40
  41   if (pthread_self () != receiver)
  42     {
  43       write (STDOUT_FILENO, "not the intended receiver\n", 26);
  44       _exit (1);
  45     }
  46
  47   if (sem_post (&sem) != 0)
  48     {
  49       write (STDOUT_FILENO, "sem_post failed\n", 16);
  50       _exit (1);
  51     }
  52 }
  53
  54
  55 static void *
  56 tf (void *a)
  57 {
  58   int e = pthread_barrier_wait (&b);
  59   if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD)
  60     {
  61       puts ("child: barrier_wait failed");
  62       exit (1);
  63     }
  64
  65   return NULL;
  66 }
  67
  68
  69 int
  70 do_test (void)
  71 {
  72   struct sigaction sa;
  73   sigemptyset (&sa.sa_mask);
  74   sa.sa_flags = 0;
  75   sa.sa_handler = handler;
  76   if (sigaction (SIGUSR1, &sa, NULL) != 0)
  77     {
  78       puts ("sigaction failed");
  79       exit (1);
  80     }
  81
  82 #define N 20
  83
  84   if (pthread_barrier_init (&b, NULL, N + 1) != 0)
  85     {
  86       puts ("barrier_init failed");
  87       exit (1);
  88     }
  89
  90   pthread_attr_t a;
  91
  92   if (pthread_attr_init (&a) != 0)
  93     {
  94       puts ("attr_init failed");
  95       exit (1);
  96     }
  97
  98   if (pthread_attr_setstacksize (&a, 1 * 1024 * 1024) != 0)
  99     {
 100       puts ("attr_setstacksize failed");
 101       return 1;
 102     }
 103
 104   pthread_t th[N];
 105   int i;
 106   for (i = 0; i < N; ++i)
 107     if (pthread_create (&th[i], &a, tf, NULL) != 0)
 108       {
 109         puts ("create failed");
 110         exit (1);
 111       }
 112
 113   if (pthread_attr_destroy (&a) != 0)
 114     {
 115       puts ("attr_destroy failed");
 116       exit (1);
 117     }
 118
 119   if (sem_init (&sem, 0, 0) != 0)
 120     {
 121       puts ("sem_init failed");
 122       exit (1);
 123     }
 124
 125   for (i = 0; i < N * 10; ++i)
 126     {
 127       receiver = th[i % N];
 128
 129       if (pthread_kill (receiver, SIGUSR1) != 0)
 130         {
 131           puts ("kill failed");
 132           exit (1);
 133         }
 134
 135       if (TEMP_FAILURE_RETRY (sem_wait (&sem)) != 0)
 136         {
 137           puts ("sem_wait failed");
 138           exit (1);
 139         }
 140     }
 141
 142   int e = pthread_barrier_wait (&b);
 143   if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD)
 144     {
 145       puts ("barrier_wait failed");
 146       exit (1);
 147     }
 148
 149   for (i = 0; i < N; ++i)
 150     if (pthread_join (th[i], NULL) != 0)
 151       {
 152         puts ("join failed");
 153         exit (1);
 154       }
 155
 156   return 0;
 157 }
 158
 159
 160 #define TEST_FUNCTION do_test ()
 161 #include "../test-skeleton.c"