nptl/tst-mutex5.c

   1 /* Copyright (C) 2002-2020 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, see
  17    <https://www.gnu.org/licenses/>.  */
  18
  19 #include <errno.h>
  20 #include <pthread.h>
  21 #include <stdio.h>
  22 #include <time.h>
  23 #include <unistd.h>
  24 #include <sys/time.h>
  25 #include <stdint.h>
  26 #include <config.h>
  27 #include <support/check.h>
  28 #include <support/timespec.h>
  29
  30
  31 #ifndef TYPE
  32 # define TYPE PTHREAD_MUTEX_NORMAL
  33 #endif
  34
  35 /* A bogus clock value that tells run_test to use
  36    pthread_mutex_timedlock rather than pthread_mutex_clocklock.  */
  37 #define CLOCK_USE_TIMEDLOCK (-1)
  38
  39 static int
  40 do_test_clock (clockid_t clockid, const char *fnname)
  41 {
  42   pthread_mutex_t m;
  43   pthread_mutexattr_t a;
  44   const clockid_t clockid_for_get =
  45     (clockid == CLOCK_USE_TIMEDLOCK) ? CLOCK_REALTIME : clockid;
  46
  47   TEST_COMPARE (pthread_mutexattr_init (&a), 0);
  48   TEST_COMPARE (pthread_mutexattr_settype (&a, TYPE), 0);
  49
  50 #ifdef ENABLE_PI
  51   TEST_COMPARE (pthread_mutexattr_setprotocol (&a, PTHREAD_PRIO_INHERIT), 0);
  52 #endif
  53
  54   int err = pthread_mutex_init (&m, &a);
  55   if (err != 0)
  56     {
  57 #ifdef ENABLE_PI
  58       if (err == ENOTSUP)
  59         FAIL_UNSUPPORTED ("PI mutexes unsupported");
  60 #endif
  61       FAIL_EXIT1 ("mutex_init failed");
  62     }
  63
  64   TEST_COMPARE (pthread_mutexattr_destroy (&a), 0);
  65   TEST_COMPARE (pthread_mutex_lock (&m), 0);
  66   if (pthread_mutex_trylock (&m) == 0)
  67     FAIL_EXIT1 ("mutex_trylock succeeded");
  68
  69   /* Wait 2 seconds.  */
  70   struct timespec ts_timeout = timespec_add (xclock_now (clockid_for_get),
  71                                              make_timespec (2, 0));
  72
  73   if (clockid == CLOCK_USE_TIMEDLOCK)
  74     TEST_COMPARE (pthread_mutex_timedlock (&m, &ts_timeout), ETIMEDOUT);
  75   else
  76     TEST_COMPARE (pthread_mutex_clocklock (&m, clockid, &ts_timeout),
  77                   ETIMEDOUT);
  78   TEST_TIMESPEC_BEFORE_NOW (ts_timeout, clockid_for_get);
  79
  80   /* The following makes the ts value invalid.  */
  81   ts_timeout.tv_nsec += 1000000000;
  82
  83   if (clockid == CLOCK_USE_TIMEDLOCK)
  84     TEST_COMPARE (pthread_mutex_timedlock (&m, &ts_timeout), EINVAL);
  85   else
  86     TEST_COMPARE (pthread_mutex_clocklock (&m, clockid, &ts_timeout), EINVAL);
  87   TEST_COMPARE (pthread_mutex_unlock (&m), 0);
  88
  89   const struct timespec ts_start = xclock_now (CLOCK_REALTIME);
  90
  91   /* Wait 2 seconds.  */
  92   ts_timeout = timespec_add (ts_start, make_timespec (2, 0));
  93
  94   if (clockid == CLOCK_USE_TIMEDLOCK)
  95     TEST_COMPARE (pthread_mutex_timedlock (&m, &ts_timeout), 0);
  96   else
  97     TEST_COMPARE (pthread_mutex_clocklock (&m, clockid, &ts_timeout), 0);
  98
  99   const struct timespec ts_end = xclock_now (clockid_for_get);
 100
 101   /* Check that timedlock didn't delay.  We use a limit of 0.1 secs.  */
 102   TEST_TIMESPEC_BEFORE (ts_end,
 103                         timespec_add (ts_start, make_timespec (0, 100000000)));
 104
 105   TEST_COMPARE (pthread_mutex_unlock (&m), 0);
 106   TEST_COMPARE (pthread_mutex_destroy (&m), 0);
 107
 108   return 0;
 109 }
 110
 111 static int do_test (void)
 112 {
 113   do_test_clock (CLOCK_USE_TIMEDLOCK, "timedlock");
 114   do_test_clock (CLOCK_REALTIME, "clocklock(realtime)");
 115   do_test_clock (CLOCK_MONOTONIC, "clocklock(monotonic)");
 116   return 0;
 117 }
 118
 119 #include <support/test-driver.c>