nptl/tst-tls2.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 <signal.h>
  23 #include <semaphore.h>
  24 #include <stdio.h>
  25 #include <stdlib.h>
  26 #include <unistd.h>
  27
  28 #if HAVE___THREAD
  29
  30 #define N 10
  31 static pthread_t th[N];
  32
  33
  34 #define CB(n) \
  35 static void                                                                   \
  36 cb##n (void)                                                                  \
  37 {                                                                             \
  38   if (th[n] != pthread_self ())                                               \
  39     {                                                                         \
  40       write (STDOUT_FILENO, "wrong callback\n", 15);                          \
  41       _exit (1);                                                              \
  42     }                                                                         \
  43 }
  44 CB (0)
  45 CB (1)
  46 CB (2)
  47 CB (3)
  48 CB (4)
  49 CB (5)
  50 CB (6)
  51 CB (7)
  52 CB (8)
  53 CB (9)
  54 static void (*cbs[]) (void) =
  55 {
  56   cb0, cb1, cb2, cb3, cb4, cb5, cb6, cb7, cb8, cb9
  57 };
  58
  59
  60 static __thread void (*fp) (void) __attribute__ ((tls_model ("local-exec")));
  61
  62
  63 static sem_t s;
  64
  65
  66 #define THE_SIG SIGUSR1
  67 static void
  68 handler (int sig)
  69 {
  70   if (sig != THE_SIG)
  71     {
  72       write (STDOUT_FILENO, "wrong signal\n", 13);
  73       _exit (1);
  74     }
  75
  76   fp ();
  77
  78   if (sem_post (&s) != 0)
  79     {
  80       write (STDOUT_FILENO, "sem_post failed\n", 16);
  81       _exit (1);
  82     }
  83 }
  84
  85
  86 static pthread_barrier_t b;
  87
  88 #define TOTAL_SIGS 1000
  89 static int nsigs;
  90
  91
  92 static void *
  93 tf (void *arg)
  94 {
  95   fp = arg;
  96
  97   pthread_barrier_wait (&b);
  98
  99   pthread_barrier_wait (&b);
 100
 101   if (nsigs != TOTAL_SIGS)
 102     {
 103       puts ("barrier_wait prematurely returns");
 104       exit (1);
 105     }
 106
 107   return NULL;
 108 }
 109 #endif
 110
 111 int
 112 do_test (void)
 113 {
 114 #if !HAVE___THREAD
 115
 116   puts ("No __thread support in compiler, test skipped.");
 117
 118   return 0;
 119 #else
 120
 121   if (pthread_barrier_init (&b, NULL, N + 1) != 0)
 122     {
 123       puts ("barrier_init failed");
 124       exit (1);
 125     }
 126
 127   if (sem_init (&s, 0, 0) != 0)
 128     {
 129       puts ("sem_init failed");
 130       exit (1);
 131     }
 132
 133   struct sigaction sa;
 134   sa.sa_handler = handler;
 135   sigemptyset (&sa.sa_mask);
 136   sa.sa_flags = 0;
 137   if (sigaction (THE_SIG, &sa, NULL) != 0)
 138     {
 139       puts ("sigaction failed");
 140       exit (1);
 141     }
 142
 143   int i;
 144   for (i = 0; i < N; ++i)
 145     if (pthread_create (&th[i], NULL, tf, cbs[i]) != 0)
 146       {
 147         puts ("pthread_create failed");
 148         exit (1);
 149       }
 150
 151   pthread_barrier_wait (&b);
 152
 153   sigset_t ss;
 154   sigemptyset (&ss);
 155   sigaddset (&ss, THE_SIG);
 156   if (pthread_sigmask (SIG_BLOCK, &ss, NULL) != 0)
 157     {
 158       puts ("pthread_sigmask failed");
 159       exit (1);
 160     }
 161
 162   /* Start sending signals.  */
 163   for (i = 0; i < TOTAL_SIGS; ++i)
 164     {
 165       if (kill (getpid (), THE_SIG) != 0)
 166         {
 167           puts ("kill failed");
 168           exit (1);
 169         }
 170
 171       if (TEMP_FAILURE_RETRY (sem_wait (&s)) != 0)
 172         {
 173           puts ("sem_wait failed");
 174           exit (1);
 175         }
 176
 177       ++nsigs;
 178     }
 179
 180   pthread_barrier_wait (&b);
 181
 182   for (i = 0; i < N; ++i)
 183     if (pthread_join (th[i], NULL) != 0)
 184       {
 185         puts ("join failed");
 186         exit (1);
 187       }
 188
 189   return 0;
 190 #endif
 191 }
 192
 193
 194 #define TEST_FUNCTION do_test ()
 195 #include "../test-skeleton.c"