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
|
/* Tests for POSIX timer implementation.
Copyright (C) 2000, 2002 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Kaz Kylheku <kaz@ashi.footprints.net>.
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; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include <errno.h>
#include <signal.h>
#include <stdio.h>
#include <time.h>
#include <unistd.h>
static void
notify_func (union sigval sigval)
{
puts ("notify_func");
}
static void
signal_func (int sig)
{
static const char text[] = "signal_func\n";
signal (sig, signal_func);
write (STDOUT_FILENO, text, sizeof text - 1);
}
static void
intr_sleep (int sec)
{
struct timespec ts;
ts.tv_sec = sec;
ts.tv_nsec = 0;
while (nanosleep (&ts, &ts) == -1 && errno == EINTR)
;
}
#define ZSIGALRM 14
int
main (void)
{
struct timespec ts;
timer_t timer_sig, timer_thr1, timer_thr2;
int retval;
struct sigevent sigev1 =
{
.sigev_notify = SIGEV_SIGNAL,
.sigev_signo = ZSIGALRM
};
struct sigevent sigev2;
struct itimerspec itimer1 = { { 0, 200000000 }, { 0, 200000000 } };
struct itimerspec itimer2 = { { 0, 100000000 }, { 0, 500000000 } };
struct itimerspec itimer3 = { { 0, 150000000 }, { 0, 300000000 } };
struct itimerspec old;
retval = clock_gettime (CLOCK_REALTIME, &ts);
sigev2.sigev_notify = SIGEV_THREAD;
sigev2.sigev_notify_function = notify_func;
sigev2.sigev_notify_attributes = NULL;
setvbuf (stdout, 0, _IOLBF, 0);
printf ("clock_gettime returned %d, timespec = { %ld, %ld }\n",
retval, ts.tv_sec, ts.tv_nsec);
retval = clock_getres (CLOCK_REALTIME, &ts);
printf ("clock_getres returned %d, timespec = { %ld, %ld }\n",
retval, ts.tv_sec, ts.tv_nsec);
timer_create (CLOCK_REALTIME, &sigev1, &timer_sig);
timer_create (CLOCK_REALTIME, &sigev2, &timer_thr1);
timer_create (CLOCK_REALTIME, &sigev2, &timer_thr2);
timer_settime (timer_thr1, 0, &itimer2, &old);
timer_settime (timer_thr2, 0, &itimer3, &old);
signal (ZSIGALRM, signal_func);
timer_settime (timer_sig, 0, &itimer1, &old);
timer_delete (-1);
intr_sleep (3);
timer_delete (timer_sig);
timer_delete (timer_thr1);
intr_sleep (3);
timer_delete (timer_thr2);
return 0;
}
|
