nptl/tst-cancel12.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 <semaphore.h>
  23 #include <stdio.h>
  24 #include <stdlib.h>
  25 #include <string.h>
  26 #include <unistd.h>
  27
  28
  29 static pthread_barrier_t bar;
  30 static sem_t sem;
  31
  32
  33 static void
  34 cleanup (void *arg)
  35 {
  36   static int ncall;
  37
  38   if (++ncall != 1)
  39     {
  40       puts ("second call to cleanup");
  41       exit (1);
  42     }
  43
  44   printf ("cleanup call #%d\n", ncall);
  45 }
  46
  47
  48 static void *
  49 tf (void *arg)
  50 {
  51   pthread_cleanup_push (cleanup, NULL);
  52
  53   int e = pthread_barrier_wait (&bar);
  54   if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD)
  55     {
  56       puts ("tf: 1st barrier_wait failed");
  57       exit (1);
  58     }
  59
  60   /* This call should block and be cancelable.  */
  61   sem_wait (&sem);
  62
  63   pthread_cleanup_pop (0);
  64
  65   puts ("sem_wait returned");
  66
  67   return NULL;
  68 }
  69
  70
  71 static int
  72 do_test (void)
  73 {
  74   pthread_t th;
  75
  76   if (pthread_barrier_init (&bar, NULL, 2) != 0)
  77     {
  78       puts ("barrier_init failed");
  79       exit (1);
  80     }
  81
  82   if (sem_init (&sem, 0, 1) != 0)
  83     {
  84       puts ("sem_init failed");
  85       exit (1);
  86     }
  87
  88   if (pthread_create (&th, NULL, tf, NULL) != 0)
  89     {
  90       puts ("create failed");
  91       exit (1);
  92     }
  93
  94   /* Check whether cancellation is honored even before sem_wait does
  95      anything.  */
  96   if (pthread_cancel (th) != 0)
  97     {
  98       puts ("1st cancel failed");
  99       exit (1);
 100     }
 101
 102   int e = pthread_barrier_wait (&bar);
 103   if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD)
 104     {
 105       puts ("1st barrier_wait failed");
 106       exit (1);
 107     }
 108
 109   void *r;
 110   if (pthread_join (th, &r) != 0)
 111     {
 112       puts ("join failed");
 113       exit (1);
 114     }
 115
 116   if (r != PTHREAD_CANCELED)
 117     {
 118       puts ("thread not canceled");
 119       exit (1);
 120     }
 121
 122   return 0;
 123 }
 124
 125
 126 #define TEST_FUNCTION do_test ()
 127 #include "../test-skeleton.c"