summaryrefslogtreecommitdiff
path: root/nptl/tst-mutex5.c
blob: 2e99e75cbcbdbfdcd5f6168f8fe5f61026aef1df (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
/* Copyright (C) 2002-2015 Free Software Foundation, Inc.
   This file is part of the GNU C Library.
   Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, see
   <http://www.gnu.org/licenses/>.  */

#include <errno.h>
#include <pthread.h>
#include <stdio.h>
#include <time.h>
#include <unistd.h>
#include <sys/time.h>
#include <stdint.h>
#include <config.h>


#ifndef TYPE
# define TYPE PTHREAD_MUTEX_NORMAL
#endif


static int
do_test (void)
{
  pthread_mutex_t m;
  struct timespec ts;
  struct timeval tv;
  struct timeval tv2;
  int err;
  pthread_mutexattr_t a;

  if (pthread_mutexattr_init (&a) != 0)
    {
      puts ("mutexattr_init failed");
      return 1;
    }

  if (pthread_mutexattr_settype (&a, TYPE) != 0)
    {
      puts ("mutexattr_settype failed");
      return 1;
    }

#ifdef ENABLE_PI
  if (pthread_mutexattr_setprotocol (&a, PTHREAD_PRIO_INHERIT) != 0)
    {
      puts ("pthread_mutexattr_setprotocol failed");
      return 1;
    }
#endif

  err = pthread_mutex_init (&m, &a);
  if (err != 0)
    {
#ifdef ENABLE_PI
      if (err == ENOTSUP)
	{
	  puts ("PI mutexes unsupported");
	  return 0;
	}
#endif
      puts ("mutex_init failed");
      return 1;
    }

  if (pthread_mutexattr_destroy (&a) != 0)
    {
      puts ("mutexattr_destroy failed");
      return 1;
    }

  if (pthread_mutex_lock (&m) != 0)
    {
      puts ("mutex_lock failed");
      return 1;
    }

  if (pthread_mutex_trylock (&m) == 0)
    {
      puts ("mutex_trylock succeeded");
      return 1;
    }

  gettimeofday (&tv, NULL);
  TIMEVAL_TO_TIMESPEC (&tv, &ts);

  ts.tv_sec += 2;	/* Wait 2 seconds.  */

  err = pthread_mutex_timedlock (&m, &ts);
  if (err == 0)
    {
      puts ("timedlock succeeded");
      return 1;
    }
  else if (err != ETIMEDOUT)
    {
      printf ("timedlock error != ETIMEDOUT: %d\n", err);
      return 1;
    }
  else
    {
      int clk_tck = sysconf (_SC_CLK_TCK);

      gettimeofday (&tv2, NULL);

      tv2.tv_sec -= tv.tv_sec;
      tv2.tv_usec -= tv.tv_usec;
      if (tv2.tv_usec < 0)
	{
	  tv2.tv_usec += 1000000;
	  tv2.tv_sec -= 1;
	}

      /* Be a bit tolerant, add one CLK_TCK.  */
      tv2.tv_usec += 1000000 / clk_tck;
      if (tv2.tv_usec >= 1000000)
	{
	  tv2.tv_usec -= 1000000;
	  ++tv2.tv_sec;
	}

      if (tv2.tv_sec < 2)
	{
	  printf ("premature timeout: %jd.%06jd difference\n",
		  (intmax_t) tv2.tv_sec, (intmax_t) tv2.tv_usec);
	  return 1;
	}
    }

  (void) gettimeofday (&tv, NULL);
  TIMEVAL_TO_TIMESPEC (&tv, &ts);

  ts.tv_sec += 2;	/* Wait 2 seconds.  */
  /* The following makes the ts value invalid.  */
  ts.tv_nsec += 1000000000;

  err = pthread_mutex_timedlock (&m, &ts);
  if (err == 0)
    {
      puts ("2nd timedlock succeeded");
      return 1;
    }
  else if (err != EINVAL)
    {
      printf ("2nd timedlock error != EINVAL: %d\n", err);
      return 1;
    }

  if (pthread_mutex_unlock (&m) != 0)
    {
      puts ("mutex_unlock failed");
      return 1;
    }

  (void) gettimeofday (&tv, NULL);
  TIMEVAL_TO_TIMESPEC (&tv, &ts);

  ts.tv_sec += 2;	/* Wait 2 seconds.  */
  if (pthread_mutex_timedlock (&m, &ts) != 0)
    {
      puts ("3rd timedlock failed");
    }

  (void) gettimeofday (&tv2, NULL);

  /* Check that timedlock didn't delay.  We use a limit of 0.1 secs.  */
  timersub (&tv2, &tv, &tv2);
  if (tv2.tv_sec > 0 || tv2.tv_usec > 100000)
    {
      puts ("3rd timedlock didn't return right away");
      return 1;
    }

  if (pthread_mutex_unlock (&m) != 0)
    {
      puts ("final mutex_unlock failed");
      return 1;
    }

  if (pthread_mutex_destroy (&m) != 0)
    {
      puts ("mutex_destroy failed");
      return 1;
    }

  return 0;
}

#define TIMEOUT 4
#define TEST_FUNCTION do_test ()
#include "../test-skeleton.c"