nptl/tst-cancel13.c

   1 /* Copyright (C) 2003-2015 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 <stdio.h>
  23 #include <stdlib.h>
  24 #include <string.h>
  25 #include <unistd.h>
  26
  27
  28 static pthread_barrier_t bar;
  29 static sem_t sem;
  30
  31
  32 static void
  33 cleanup (void *arg)
  34 {
  35   static int ncall;
  36
  37   if (++ncall != 1)
  38     {
  39       puts ("second call to cleanup");
  40       exit (1);
  41     }
  42
  43   printf ("cleanup call #%d\n", ncall);
  44 }
  45
  46
  47 static void *
  48 tf (void *arg)
  49 {
  50   pthread_cleanup_push (cleanup, NULL);
  51
  52   int e = pthread_barrier_wait (&bar);
  53   if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD)
  54     {
  55       puts ("tf: 1st barrier_wait failed");
  56       exit (1);
  57     }
  58
  59   /* This call should block and be cancelable.  */
  60   sem_wait (&sem);
  61
  62   pthread_cleanup_pop (0);
  63
  64   puts ("sem_wait returned");
  65
  66   return NULL;
  67 }
  68
  69
  70 static int
  71 do_test (void)
  72 {
  73   pthread_t th;
  74
  75   if (pthread_barrier_init (&bar, NULL, 2) != 0)
  76     {
  77       puts ("barrier_init failed");
  78       exit (1);
  79     }
  80
  81   if (sem_init (&sem, 0, 0) != 0)
  82     {
  83       puts ("sem_init failed");
  84       exit (1);
  85     }
  86
  87   if (pthread_create (&th, NULL, tf, NULL) != 0)
  88     {
  89       puts ("create failed");
  90       exit (1);
  91     }
  92
  93   int e = pthread_barrier_wait (&bar);
  94   if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD)
  95     {
  96       puts ("1st barrier_wait failed");
  97       exit (1);
  98     }
  99
 100   /* Give the child a chance to go to sleep in sem_wait.  */
 101   sleep (1);
 102
 103   /* Check whether cancellation is honored when waiting in sem_wait.  */
 104   if (pthread_cancel (th) != 0)
 105     {
 106       puts ("1st cancel failed");
 107       exit (1);
 108     }
 109
 110   void *r;
 111   if (pthread_join (th, &r) != 0)
 112     {
 113       puts ("join failed");
 114       exit (1);
 115     }
 116
 117   if (r != PTHREAD_CANCELED)
 118     {
 119       puts ("thread not canceled");
 120       exit (1);
 121     }
 122
 123   return 0;
 124 }
 125
 126
 127 #define TEST_FUNCTION do_test ()
 128 #include "../test-skeleton.c"