nptl/tst-cancel1.c

   1 /* Copyright (C) 2002, 2003 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
   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 <pthread.h>
  21 #include <signal.h>
  22 #include <stdio.h>
  23 #include <stdlib.h>
  24 #include <string.h>
  25
  26
  27 static pthread_mutex_t m1 = PTHREAD_MUTEX_INITIALIZER;
  28 static pthread_mutex_t m2 = PTHREAD_MUTEX_INITIALIZER;
  29
  30 static int cntr;
  31
  32
  33 static void
  34 cleanup (void *arg)
  35 {
  36   if (arg != (void *) 42l)
  37     cntr = 42;
  38   else
  39     cntr = 1;
  40 }
  41
  42
  43 static void *
  44 tf (void *arg)
  45 {
  46   /* Ignore all signals.  This must not have any effect on delivering
  47      the cancellation signal.  */
  48   sigset_t ss;
  49
  50   sigfillset (&ss);
  51
  52   if (pthread_sigmask (SIG_BLOCK, &ss, NULL) != 0)
  53     {
  54       puts ("pthread_sigmask failed");
  55       exit (1);
  56     }
  57
  58   pthread_cleanup_push (cleanup, (void *) 42l);
  59
  60   int err = pthread_setcanceltype (PTHREAD_CANCEL_ASYNCHRONOUS, NULL);
  61   if (err != 0)
  62     {
  63       printf ("setcanceltype failed: %s\n", strerror (err));
  64       exit (1);
  65     }
  66   /* The following code is not standard compliant: the mutex functions
  67      must not be called with asynchronous cancellation enabled.  */
  68
  69   err = pthread_mutex_unlock (&m2);
  70   if (err != 0)
  71     {
  72       printf ("child: mutex_unlock failed: %s\n", strerror (err));
  73       exit (1);
  74     }
  75
  76   err = pthread_mutex_lock (&m1);
  77   if (err != 0)
  78     {
  79       printf ("child: 1st mutex_lock failed: %s\n", strerror (err));
  80       exit (1);
  81     }
  82
  83   /* We should never come here.  */
  84
  85   pthread_cleanup_pop (0);
  86
  87   return NULL;
  88 }
  89
  90
  91 static int
  92 do_test (void)
  93 {
  94   int err;
  95   pthread_t th;
  96   int result = 0;
  97   void *retval;
  98
  99   /* Get the mutexes.  */
 100   err = pthread_mutex_lock (&m1);
 101   if (err != 0)
 102     {
 103       printf ("parent: 1st mutex_lock failed: %s\n", strerror (err));
 104       return 1;
 105     }
 106   err = pthread_mutex_lock (&m2);
 107   if (err != 0)
 108     {
 109       printf ("parent: 2nd mutex_lock failed: %s\n", strerror (err));
 110       return 1;
 111     }
 112
 113   err = pthread_create (&th, NULL, tf, NULL);
 114   if (err != 0)
 115     {
 116       printf ("create failed: %s\n", strerror (err));
 117       return 1;
 118     }
 119
 120   err = pthread_mutex_lock (&m2);
 121   if (err != 0)
 122     {
 123       printf ("parent: 3rd mutex_lock failed: %s\n", strerror (err));
 124       return 1;
 125     }
 126
 127   err = pthread_cancel (th);
 128   if (err != 0)
 129     {
 130       printf ("cancel failed: %s\n", strerror (err));
 131       return 1;
 132     }
 133
 134   err = pthread_join (th, &retval);
 135   if (err != 0)
 136     {
 137       printf ("join failed: %s\n", strerror (err));
 138       return 1;
 139     }
 140
 141   if (retval != PTHREAD_CANCELED)
 142     {
 143       printf ("wrong return value: %p\n", retval);
 144       result = 1;
 145     }
 146
 147   if (cntr == 42)
 148     {
 149       puts ("cleanup handler called with wrong argument");
 150       result = 1;
 151     }
 152   else if (cntr != 1)
 153     {
 154       puts ("cleanup handling not called");
 155       result = 1;
 156     }
 157
 158   return result;
 159 }
 160
 161
 162 #define TEST_FUNCTION do_test ()
 163 #include "../test-skeleton.c"