nptl/tst-kill6.c

   1 /* Copyright (C) 2003-2019 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    <https://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 int do_test (void);
  29
  30 #define TEST_FUNCTION do_test ()
  31 #include "../test-skeleton.c"
  32
  33 static pthread_t receiver;
  34 static sem_t sem;
  35 static pthread_barrier_t b;
  36
  37 static void
  38 handler (int sig)
  39 {
  40   if (sig != SIGUSR1)
  41     {
  42       write_message ("wrong signal\n");
  43       _exit (1);
  44     }
  45
  46   if (pthread_self () != receiver)
  47     {
  48       write_message ("not the intended receiver\n");
  49       _exit (1);
  50     }
  51
  52   if (sem_post (&sem) != 0)
  53     {
  54       write_message ("sem_post failed\n");
  55       _exit (1);
  56     }
  57 }
  58
  59
  60 static void *
  61 tf (void *a)
  62 {
  63   int e = pthread_barrier_wait (&b);
  64   if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD)
  65     {
  66       puts ("child: barrier_wait failed");
  67       exit (1);
  68     }
  69
  70   return NULL;
  71 }
  72
  73
  74 int
  75 do_test (void)
  76 {
  77   struct sigaction sa;
  78   sigemptyset (&sa.sa_mask);
  79   sa.sa_flags = 0;
  80   sa.sa_handler = handler;
  81   if (sigaction (SIGUSR1, &sa, NULL) != 0)
  82     {
  83       puts ("sigaction failed");
  84       exit (1);
  85     }
  86
  87 #define N 20
  88
  89   if (pthread_barrier_init (&b, NULL, N + 1) != 0)
  90     {
  91       puts ("barrier_init failed");
  92       exit (1);
  93     }
  94
  95   pthread_attr_t a;
  96
  97   if (pthread_attr_init (&a) != 0)
  98     {
  99       puts ("attr_init failed");
 100       exit (1);
 101     }
 102
 103   if (pthread_attr_setstacksize (&a, 1 * 1024 * 1024) != 0)
 104     {
 105       puts ("attr_setstacksize failed");
 106       return 1;
 107     }
 108
 109   pthread_t th[N];
 110   int i;
 111   for (i = 0; i < N; ++i)
 112     if (pthread_create (&th[i], &a, tf, NULL) != 0)
 113       {
 114         puts ("create failed");
 115         exit (1);
 116       }
 117
 118   if (pthread_attr_destroy (&a) != 0)
 119     {
 120       puts ("attr_destroy failed");
 121       exit (1);
 122     }
 123
 124   if (sem_init (&sem, 0, 0) != 0)
 125     {
 126       puts ("sem_init failed");
 127       exit (1);
 128     }
 129
 130   for (i = 0; i < N * 10; ++i)
 131     {
 132       receiver = th[i % N];
 133
 134       if (pthread_kill (receiver, SIGUSR1) != 0)
 135         {
 136           puts ("kill failed");
 137           exit (1);
 138         }
 139
 140       if (TEMP_FAILURE_RETRY (sem_wait (&sem)) != 0)
 141         {
 142           puts ("sem_wait failed");
 143           exit (1);
 144         }
 145     }
 146
 147   int e = pthread_barrier_wait (&b);
 148   if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD)
 149     {
 150       puts ("barrier_wait failed");
 151       exit (1);
 152     }
 153
 154   for (i = 0; i < N; ++i)
 155     if (pthread_join (th[i], NULL) != 0)
 156       {
 157         puts ("join failed");
 158         exit (1);
 159       }
 160
 161   return 0;
 162 }