nptl/tst-tls3.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 <dlfcn.h>
  20 #include <errno.h>
  21 #include <pthread.h>
  22 #include <signal.h>
  23 #include <semaphore.h>
  24 #include <stdint.h>
  25 #include <stdio.h>
  26 #include <stdlib.h>
  27 #include <unistd.h>
  28 #include <pthreaddef.h>
  29
  30 #define THE_SIG SIGUSR1
  31
  32 /* The stack size can be overriden.  With a sufficiently large stack
  33    size, thread stacks for terminated threads are freed, but this does
  34    not happen with the default size of 1 MiB.  */
  35 enum { default_stack_size_in_mb = 1 };
  36 static long stack_size_in_mb;
  37
  38 #define N 10
  39 static pthread_t th[N];
  40
  41
  42 #define CB(n) \
  43 static void                                                                   \
  44 cb##n (void)                                                                  \
  45 {                                                                             \
  46   if (th[n] != pthread_self ())                                               \
  47     {                                                                         \
  48       write (STDOUT_FILENO, "wrong callback\n", 15);                          \
  49       _exit (1);                                                              \
  50     }                                                                         \
  51 }
  52 CB (0)
  53 CB (1)
  54 CB (2)
  55 CB (3)
  56 CB (4)
  57 CB (5)
  58 CB (6)
  59 CB (7)
  60 CB (8)
  61 CB (9)
  62 static void (*cbs[]) (void) =
  63 {
  64   cb0, cb1, cb2, cb3, cb4, cb5, cb6, cb7, cb8, cb9
  65 };
  66
  67
  68 sem_t s;
  69
  70
  71 pthread_barrier_t b;
  72
  73 #define TOTAL_SIGS 1000
  74 int nsigs;
  75
  76
  77 int
  78 do_test (void)
  79 {
  80   if (stack_size_in_mb == 0)
  81     stack_size_in_mb = default_stack_size_in_mb;
  82
  83   if ((uintptr_t) pthread_self () & (TCB_ALIGNMENT - 1))
  84     {
  85       puts ("initial thread's struct pthread not aligned enough");
  86       exit (1);
  87     }
  88
  89   if (pthread_barrier_init (&b, NULL, N + 1) != 0)
  90     {
  91       puts ("barrier_init failed");
  92       exit (1);
  93     }
  94
  95   if (sem_init (&s, 0, 0) != 0)
  96     {
  97       puts ("sem_init failed");
  98       exit (1);
  99     }
 100
 101   void *h = dlopen ("tst-tls3mod.so", RTLD_LAZY);
 102   if (h == NULL)
 103     {
 104       puts ("dlopen failed");
 105       exit (1);
 106     }
 107
 108   void *(*tf) (void *) = dlsym (h, "tf");
 109   if (tf == NULL)
 110     {
 111       puts ("dlsym for tf failed");
 112       exit (1);
 113     }
 114
 115   struct sigaction sa;
 116   sa.sa_handler = dlsym (h, "handler");
 117   if (sa.sa_handler == NULL)
 118     {
 119       puts ("dlsym for handler failed");
 120       exit (1);
 121     }
 122   sigemptyset (&sa.sa_mask);
 123   sa.sa_flags = 0;
 124   if (sigaction (THE_SIG, &sa, NULL) != 0)
 125     {
 126       puts ("sigaction failed");
 127       exit (1);
 128     }
 129
 130   pthread_attr_t a;
 131
 132   if (pthread_attr_init (&a) != 0)
 133     {
 134       puts ("attr_init failed");
 135       exit (1);
 136     }
 137
 138   if (pthread_attr_setstacksize (&a, stack_size_in_mb * 1024 * 1024) != 0)
 139     {
 140       puts ("attr_setstacksize failed");
 141       return 1;
 142     }
 143
 144   int r;
 145   for (r = 0; r < 10; ++r)
 146     {
 147       int i;
 148       for (i = 0; i < N; ++i)
 149         if (pthread_create (&th[i], &a, tf, cbs[i]) != 0)
 150           {
 151             puts ("pthread_create failed");
 152             exit (1);
 153           }
 154
 155       nsigs = 0;
 156
 157       pthread_barrier_wait (&b);
 158
 159       sigset_t ss;
 160       sigemptyset (&ss);
 161       sigaddset (&ss, THE_SIG);
 162       if (pthread_sigmask (SIG_BLOCK, &ss, NULL) != 0)
 163         {
 164           puts ("pthread_sigmask failed");
 165           exit (1);
 166         }
 167
 168       /* Start sending signals.  */
 169       for (i = 0; i < TOTAL_SIGS; ++i)
 170         {
 171           if (kill (getpid (), THE_SIG) != 0)
 172             {
 173               puts ("kill failed");
 174               exit (1);
 175             }
 176
 177           if (TEMP_FAILURE_RETRY (sem_wait (&s)) != 0)
 178             {
 179               puts ("sem_wait failed");
 180               exit (1);
 181             }
 182
 183           ++nsigs;
 184         }
 185
 186       pthread_barrier_wait (&b);
 187
 188       if (pthread_sigmask (SIG_UNBLOCK, &ss, NULL) != 0)
 189         {
 190           puts ("pthread_sigmask failed");
 191           exit (1);
 192         }
 193
 194       for (i = 0; i < N; ++i)
 195         if (pthread_join (th[i], NULL) != 0)
 196           {
 197             puts ("join failed");
 198             exit (1);
 199           }
 200     }
 201
 202   if (pthread_attr_destroy (&a) != 0)
 203     {
 204       puts ("attr_destroy failed");
 205       exit (1);
 206     }
 207
 208   return 0;
 209 }
 210
 211
 212 #define TIMEOUT 5
 213 #define TEST_FUNCTION do_test ()
 214 #include "../test-skeleton.c"