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
|
/* Multithread-safety test for gmtime_r().
Copyright (C) 2024-2025 Free Software Foundation, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
/* Written by Bruno Haible <bruno@clisp.org>, 2024. */
#include <config.h>
/* Work around GCC bug 44511. */
#if _GL_GNUC_PREREQ (4, 3)
# pragma GCC diagnostic ignored "-Wreturn-type"
#endif
#if USE_ISOC_THREADS || USE_POSIX_THREADS || USE_ISOC_AND_POSIX_THREADS || USE_WINDOWS_THREADS
/* Specification. */
#include <time.h>
#include <stdio.h>
#include <stdlib.h>
#include "glthread/thread.h"
#include "macros.h"
static void *
thread1_func (void *arg)
{
for (;;)
{
time_t t = 1509000003; /* 2017-10-26 06:40:03 */
struct tm tm;
struct tm *result = gmtime_r (&t, &tm);
ASSERT (result == &tm);
if (!(result->tm_sec == 3
&& result->tm_min == 40
&& result->tm_hour == 6
&& result->tm_mday == 26
&& result->tm_mon == 10 - 1
&& result->tm_year == 2017 - 1900
&& result->tm_wday == 4
&& result->tm_yday == 298
&& result->tm_isdst == 0))
{
fprintf (stderr, "thread1 disturbed by thread2!\n"); fflush (stderr);
abort ();
}
}
/*NOTREACHED*/
}
static void *
thread2_func (void *arg)
{
for (;;)
{
time_t t = 2000050005; /* 2033-05-18 17:26:45 */
struct tm tm;
struct tm *result = gmtime_r (&t, &tm);
ASSERT (result == &tm);
if (!(result->tm_sec == 45
&& result->tm_min == 26
&& result->tm_hour == 17
&& result->tm_mday == 18
&& result->tm_mon == 5 - 1
&& result->tm_year == 2033 - 1900
&& result->tm_wday == 3
&& result->tm_yday == 137
&& result->tm_isdst == 0))
{
fprintf (stderr, "thread2 disturbed by thread1!\n"); fflush (stderr);
abort ();
}
}
/*NOTREACHED*/
}
int
main (int argc, char *argv[])
{
/* Create the threads. */
gl_thread_create (thread1_func, NULL);
gl_thread_create (thread2_func, NULL);
/* Let them run for 1 second. */
{
struct timespec duration;
duration.tv_sec = (argc > 1 ? atoi (argv[1]) : 1);
duration.tv_nsec = 0;
nanosleep (&duration, NULL);
}
return test_exit_status;
}
#else
/* No multithreading available. */
#include <stdio.h>
int
main ()
{
fputs ("Skipping test: multithreading not enabled\n", stderr);
return 77;
}
#endif
|
