nptl/tst-mutex5.c

   1 /* Copyright (C) 2002, 2003, 2004, 2006 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 <errno.h>
  21 #include <pthread.h>
  22 #include <stdio.h>
  23 #include <time.h>
  24 #include <unistd.h>
  25 #include <sys/time.h>
  26
  27
  28 #ifndef TYPE
  29 # define TYPE PTHREAD_MUTEX_NORMAL
  30 #endif
  31
  32
  33 static int
  34 do_test (void)
  35 {
  36   pthread_mutex_t m;
  37   struct timespec ts;
  38   struct timeval tv;
  39   struct timeval tv2;
  40   int err;
  41   pthread_mutexattr_t a;
  42
  43   if (pthread_mutexattr_init (&a) != 0)
  44     {
  45       puts ("mutexattr_init failed");
  46       return 1;
  47     }
  48
  49   if (pthread_mutexattr_settype (&a, TYPE) != 0)
  50     {
  51       puts ("mutexattr_settype failed");
  52       return 1;
  53     }
  54
  55 #ifdef ENABLE_PI
  56   if (pthread_mutexattr_setprotocol (&a, PTHREAD_PRIO_INHERIT) != 0)
  57     {
  58       puts ("pthread_mutexattr_setprotocol failed");
  59       return 1;
  60     }
  61 #endif
  62
  63   err = pthread_mutex_init (&m, &a);
  64   if (err != 0)
  65     {
  66 #ifdef ENABLE_PI
  67       if (err == ENOTSUP)
  68         {
  69           puts ("PI mutexes unsupported");
  70           return 0;
  71         }
  72 #endif
  73       puts ("mutex_init failed");
  74       return 1;
  75     }
  76
  77   if (pthread_mutexattr_destroy (&a) != 0)
  78     {
  79       puts ("mutexattr_destroy failed");
  80       return 1;
  81     }
  82
  83   if (pthread_mutex_lock (&m) != 0)
  84     {
  85       puts ("mutex_lock failed");
  86       return 1;
  87     }
  88
  89   if (pthread_mutex_trylock (&m) == 0)
  90     {
  91       puts ("mutex_trylock succeeded");
  92       return 1;
  93     }
  94
  95   gettimeofday (&tv, NULL);
  96   TIMEVAL_TO_TIMESPEC (&tv, &ts);
  97
  98   ts.tv_sec += 2;       /* Wait 2 seconds.  */
  99
 100   err = pthread_mutex_timedlock (&m, &ts);
 101   if (err == 0)
 102     {
 103       puts ("timedlock succeeded");
 104       return 1;
 105     }
 106   else if (err != ETIMEDOUT)
 107     {
 108       printf ("timedlock error != ETIMEDOUT: %d\n", err);
 109       return 1;
 110     }
 111   else
 112     {
 113       int clk_tck = sysconf (_SC_CLK_TCK);
 114
 115       gettimeofday (&tv2, NULL);
 116
 117       tv2.tv_sec -= tv.tv_sec;
 118       tv2.tv_usec -= tv.tv_usec;
 119       if (tv2.tv_usec < 0)
 120         {
 121           tv2.tv_usec += 1000000;
 122           tv2.tv_sec -= 1;
 123         }
 124
 125       /* Be a bit tolerant, add one CLK_TCK.  */
 126       tv2.tv_usec += 1000000 / clk_tck;
 127       if (tv2.tv_usec >= 1000000)
 128         {
 129           tv2.tv_usec -= 1000000;
 130           ++tv2.tv_sec;
 131         }
 132
 133       if (tv2.tv_sec < 2)
 134         {
 135           printf ("premature timeout: %ld.%06ld difference\n",
 136                   tv2.tv_sec, tv2.tv_usec);
 137           return 1;
 138         }
 139     }
 140
 141   (void) gettimeofday (&tv, NULL);
 142   TIMEVAL_TO_TIMESPEC (&tv, &ts);
 143
 144   ts.tv_sec += 2;       /* Wait 2 seconds.  */
 145   /* The following makes the ts value invalid.  */
 146   ts.tv_nsec += 1000000000;
 147
 148   err = pthread_mutex_timedlock (&m, &ts);
 149   if (err == 0)
 150     {
 151       puts ("2nd timedlock succeeded");
 152       return 1;
 153     }
 154   else if (err != EINVAL)
 155     {
 156       printf ("2nd timedlock error != EINVAL: %d\n", err);
 157       return 1;
 158     }
 159
 160   if (pthread_mutex_unlock (&m) != 0)
 161     {
 162       puts ("mutex_unlock failed");
 163       return 1;
 164     }
 165
 166   (void) gettimeofday (&tv, NULL);
 167   TIMEVAL_TO_TIMESPEC (&tv, &ts);
 168
 169   ts.tv_sec += 2;       /* Wait 2 seconds.  */
 170   if (pthread_mutex_timedlock (&m, &ts) != 0)
 171     {
 172       puts ("3rd timedlock failed");
 173     }
 174
 175   (void) gettimeofday (&tv2, NULL);
 176
 177   /* Check that timedlock didn't delay.  We use a limit of 0.1 secs.  */
 178   timersub (&tv2, &tv, &tv2);
 179   if (tv2.tv_sec > 0 || tv2.tv_usec > 100000)
 180     {
 181       puts ("3rd timedlock didn't return right away");
 182       return 1;
 183     }
 184
 185   if (pthread_mutex_unlock (&m) != 0)
 186     {
 187       puts ("final mutex_unlock failed");
 188       return 1;
 189     }
 190
 191   if (pthread_mutex_destroy (&m) != 0)
 192     {
 193       puts ("mutex_destroy failed");
 194       return 1;
 195     }
 196
 197   return 0;
 198 }
 199
 200 #define TIMEOUT 4
 201 #define TEST_FUNCTION do_test ()
 202 #include "../test-skeleton.c"