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
|
/* Copyright (C) 2003-2020 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@redhat.com>, 2003.
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 <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <unistd.h>
#include <support/check.h>
#include <support/timespec.h>
#include <support/xthread.h>
#include <support/xtime.h>
static void
wait_code (void)
{
struct timespec ts = { .tv_sec = 0, .tv_nsec = 200000000 };
while (nanosleep (&ts, &ts) < 0)
;
}
#ifdef WAIT_IN_CHILD
static pthread_barrier_t b;
#endif
static int
thread_join (pthread_t thread, void **retval)
{
#if defined USE_PTHREAD_TIMEDJOIN_NP
const struct timespec ts = timespec_add (xclock_now (CLOCK_REALTIME),
make_timespec (1000, 0));
return pthread_timedjoin_np (thread, retval, &ts);
#elif defined USE_PTHREAD_CLOCKJOIN_NP_REALTIME
const struct timespec ts = timespec_add (xclock_now (CLOCK_REALTIME),
make_timespec (1000, 0));
return pthread_clockjoin_np (thread, retval, CLOCK_REALTIME, &ts);
#elif defined USE_PTHREAD_CLOCKJOIN_NP_MONOTONIC
const struct timespec ts = timespec_add (xclock_now (CLOCK_MONOTONIC),
make_timespec (1000, 0));
return pthread_clockjoin_np (thread, retval, CLOCK_MONOTONIC, &ts);
#else
return pthread_join (thread, retval);
#endif
}
static void *
tf1 (void *arg)
{
#ifdef WAIT_IN_CHILD
xpthread_barrier_wait (&b);
wait_code ();
#endif
thread_join ((pthread_t) arg, NULL);
exit (42);
}
static void *
tf2 (void *arg)
{
#ifdef WAIT_IN_CHILD
xpthread_barrier_wait (&b);
wait_code ();
#endif
thread_join ((pthread_t) arg, NULL);
exit (43);
}
static int
do_test (void)
{
#ifdef WAIT_IN_CHILD
xpthread_barrier_init (&b, NULL, 2);
#endif
pthread_t th;
int err = thread_join (pthread_self (), NULL);
if (err == 0)
{
puts ("1st circular join succeeded");
return 1;
}
if (err != EDEADLK)
{
printf ("1st circular join %d, not EDEADLK\n", err);
return 1;
}
th = xpthread_create (NULL, tf1, (void *) pthread_self ());
#ifndef WAIT_IN_CHILD
wait_code ();
#endif
xpthread_cancel (th);
#ifdef WAIT_IN_CHILD
xpthread_barrier_wait (&b);
#endif
void *r;
err = thread_join (th, &r);
if (err != 0)
{
printf ("cannot join 1st thread: %d\n", err);
return 1;
}
if (r != PTHREAD_CANCELED)
{
puts ("1st thread not canceled");
return 1;
}
err = thread_join (pthread_self (), NULL);
if (err == 0)
{
puts ("2nd circular join succeeded");
return 1;
}
if (err != EDEADLK)
{
printf ("2nd circular join %d, not EDEADLK\n", err);
return 1;
}
th = xpthread_create (NULL, tf2, (void *) pthread_self ());
#ifndef WAIT_IN_CHILD
wait_code ();
#endif
xpthread_cancel (th);
#ifdef WAIT_IN_CHILD
xpthread_barrier_wait (&b);
#endif
if (thread_join (th, &r) != 0)
{
puts ("cannot join 2nd thread");
return 1;
}
if (r != PTHREAD_CANCELED)
{
puts ("2nd thread not canceled");
return 1;
}
err = thread_join (pthread_self (), NULL);
if (err == 0)
{
puts ("3rd circular join succeeded");
return 1;
}
if (err != EDEADLK)
{
printf ("3rd circular join %d, not EDEADLK\n", err);
return 1;
}
return 0;
}
#include <support/test-driver.c>
|
