blob: b2b218f7c9bdee523d6d5751f05bef6e1fbf9b78 (
plain) (
blame)
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
|
/* Copyright (C) 2003-2021 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 <pthread.h>
#include <semaphore.h>
#include <signal.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <pthreaddef.h>
#include <descr.h>
extern pthread_barrier_t b;
#define TOTAL_SIGS 1000
extern int nsigs;
extern sem_t s;
static __thread void (*fp) (void);
#define THE_SIG SIGUSR1
void
handler (int sig)
{
if (sig != THE_SIG)
{
write (STDOUT_FILENO, "wrong signal\n", 13);
_exit (1);
}
fp ();
if (sem_post (&s) != 0)
{
write (STDOUT_FILENO, "sem_post failed\n", 16);
_exit (1);
}
}
void *
tf (void *arg)
{
if ((uintptr_t) pthread_self () & (TCB_ALIGNMENT - 1))
{
puts ("thread's struct pthread not aligned enough");
exit (1);
}
if (fp != NULL)
{
puts ("fp not initially NULL");
exit (1);
}
fp = arg;
pthread_barrier_wait (&b);
pthread_barrier_wait (&b);
if (nsigs != TOTAL_SIGS)
{
puts ("barrier_wait prematurely returns");
exit (1);
}
return NULL;
}
|
