nptl/tst-tls2.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 <signal.h>
  22 #include <semaphore.h>
  23 #include <stdio.h>
  24 #include <stdlib.h>
  25 #include <unistd.h>
  26
  27
  28 #define N 10
  29 static pthread_t th[N];
  30
  31
  32 #define CB(n) \
  33 static void                                                                   \
  34 cb##n (void)                                                                  \
  35 {                                                                             \
  36   if (th[n] != pthread_self ())                                               \
  37     {                                                                         \
  38       write (STDOUT_FILENO, "wrong callback\n", 15);                          \
  39       _exit (1);                                                              \
  40     }                                                                         \
  41 }
  42 CB (0)
  43 CB (1)
  44 CB (2)
  45 CB (3)
  46 CB (4)
  47 CB (5)
  48 CB (6)
  49 CB (7)
  50 CB (8)
  51 CB (9)
  52 static void (*cbs[]) (void) =
  53 {
  54   cb0, cb1, cb2, cb3, cb4, cb5, cb6, cb7, cb8, cb9
  55 };
  56
  57
  58 static __thread void (*fp) (void) __attribute__ ((tls_model ("local-exec")));
  59
  60
  61 static sem_t s;
  62
  63
  64 #define THE_SIG SIGUSR1
  65 static void
  66 handler (int sig)
  67 {
  68   if (sig != THE_SIG)
  69     {
  70       write (STDOUT_FILENO, "wrong signal\n", 13);
  71       _exit (1);
  72     }
  73
  74   fp ();
  75
  76   if (sem_post (&s) != 0)
  77     {
  78       write (STDOUT_FILENO, "sem_post failed\n", 16);
  79       _exit (1);
  80     }
  81 }
  82
  83
  84 static pthread_barrier_t b;
  85
  86 #define TOTAL_SIGS 1000
  87 static int nsigs;
  88
  89
  90 static void *
  91 tf (void *arg)
  92 {
  93   fp = arg;
  94
  95   pthread_barrier_wait (&b);
  96
  97   pthread_barrier_wait (&b);
  98
  99   if (nsigs != TOTAL_SIGS)
 100     {
 101       puts ("barrier_wait prematurely returns");
 102       exit (1);
 103     }
 104
 105   return NULL;
 106 }
 107
 108
 109 int
 110 do_test (void)
 111 {
 112   if (pthread_barrier_init (&b, NULL, N + 1) != 0)
 113     {
 114       puts ("barrier_init failed");
 115       exit (1);
 116     }
 117
 118   if (sem_init (&s, 0, 0) != 0)
 119     {
 120       puts ("sem_init failed");
 121       exit (1);
 122     }
 123
 124   struct sigaction sa;
 125   sa.sa_handler = handler;
 126   sigemptyset (&sa.sa_mask);
 127   sa.sa_flags = 0;
 128   if (sigaction (THE_SIG, &sa, NULL) != 0)
 129     {
 130       puts ("sigaction failed");
 131       exit (1);
 132     }
 133
 134   pthread_attr_t a;
 135
 136   if (pthread_attr_init (&a) != 0)
 137     {
 138       puts ("attr_init failed");
 139       exit (1);
 140     }
 141
 142   if (pthread_attr_setstacksize (&a, 1 * 1024 * 1024) != 0)
 143     {
 144       puts ("attr_setstacksize failed");
 145       return 1;
 146     }
 147
 148   int i;
 149   for (i = 0; i < N; ++i)
 150     if (pthread_create (&th[i], &a, tf, cbs[i]) != 0)
 151       {
 152         puts ("pthread_create failed");
 153         exit (1);
 154       }
 155
 156   if (pthread_attr_destroy (&a) != 0)
 157     {
 158       puts ("attr_destroy failed");
 159       exit (1);
 160     }
 161
 162   pthread_barrier_wait (&b);
 163
 164   sigset_t ss;
 165   sigemptyset (&ss);
 166   sigaddset (&ss, THE_SIG);
 167   if (pthread_sigmask (SIG_BLOCK, &ss, NULL) != 0)
 168     {
 169       puts ("pthread_sigmask failed");
 170       exit (1);
 171     }
 172
 173   /* Start sending signals.  */
 174   for (i = 0; i < TOTAL_SIGS; ++i)
 175     {
 176       if (kill (getpid (), THE_SIG) != 0)
 177         {
 178           puts ("kill failed");
 179           exit (1);
 180         }
 181
 182       if (TEMP_FAILURE_RETRY (sem_wait (&s)) != 0)
 183         {
 184           puts ("sem_wait failed");
 185           exit (1);
 186         }
 187
 188       ++nsigs;
 189     }
 190
 191   pthread_barrier_wait (&b);
 192
 193   for (i = 0; i < N; ++i)
 194     if (pthread_join (th[i], NULL) != 0)
 195       {
 196         puts ("join failed");
 197         exit (1);
 198       }
 199
 200   return 0;
 201 }
 202
 203
 204 #define TEST_FUNCTION do_test ()
 205 #include "../test-skeleton.c"