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
|
/* Copyright (C) 2003-2024 Free Software Foundation, Inc.
This file is part of the GNU C Library.
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
<https://www.gnu.org/licenses/>. */
#include <errno.h>
#include <pthread.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/time.h>
static int do_test (void);
#define TEST_FUNCTION do_test ()
#include "../test-skeleton.c"
static pthread_cond_t c = PTHREAD_COND_INITIALIZER;
static pthread_mutex_t m = PTHREAD_MUTEX_INITIALIZER;
static pthread_barrier_t b;
static void
handler (int sig)
{
write_message ("handler called\n");
_exit (1);
}
static void *
tf (void *a)
{
/* Block SIGUSR1. */
sigset_t ss;
sigemptyset (&ss);
sigaddset (&ss, SIGUSR1);
if (pthread_sigmask (SIG_BLOCK, &ss, NULL) != 0)
{
puts ("child: sigmask failed");
exit (1);
}
if (pthread_mutex_lock (&m) != 0)
{
puts ("child: mutex_lock failed");
exit (1);
}
int e = pthread_barrier_wait (&b);
if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD)
{
puts ("child: barrier_wait failed");
exit (1);
}
/* Compute timeout. */
struct timeval tv;
(void) gettimeofday (&tv, NULL);
struct timespec ts;
TIMEVAL_TO_TIMESPEC (&tv, &ts);
/* Timeout: 1sec. */
ts.tv_sec += 1;
/* This call should never return. */
if (pthread_cond_timedwait (&c, &m, &ts) != ETIMEDOUT)
{
puts ("cond_timedwait didn't time out");
exit (1);
}
return NULL;
}
int
do_test (void)
{
pthread_t th;
struct sigaction sa;
sigemptyset (&sa.sa_mask);
sa.sa_flags = 0;
sa.sa_handler = handler;
if (sigaction (SIGUSR1, &sa, NULL) != 0)
{
puts ("sigaction failed");
exit (1);
}
if (pthread_barrier_init (&b, NULL, 2) != 0)
{
puts ("barrier_init failed");
exit (1);
}
if (pthread_create (&th, NULL, tf, NULL) != 0)
{
puts ("create failed");
exit (1);
}
int e = pthread_barrier_wait (&b);
if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD)
{
puts ("barrier_wait failed");
exit (1);
}
if (pthread_mutex_lock (&m) != 0)
{
puts ("mutex_lock failed");
exit (1);
}
/* Send the thread a signal which it has blocked. */
if (pthread_kill (th, SIGUSR1) != 0)
{
puts ("kill failed");
exit (1);
}
if (pthread_mutex_unlock (&m) != 0)
{
puts ("mutex_unlock failed");
exit (1);
}
void *r;
if (pthread_join (th, &r) != 0)
{
puts ("join failed");
exit (1);
}
if (r != NULL)
{
puts ("return value wrong");
exit (1);
}
return 0;
}
|
