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1/* Tests for POSIX timer implementation.
2 Copyright (C) 2000-2019 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4 Contributed by Kaz Kylheku <kaz@ashi.footprints.net>.
5
6 The GNU C Library is free software; you can redistribute it and/or
7 modify it under the terms of the GNU Lesser General Public License as
8 published by the Free Software Foundation; either version 2.1 of the
9 License, or (at your option) any later version.
10
11 The GNU C Library is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Lesser General Public License for more details.
15
16 You should have received a copy of the GNU Lesser General Public
17 License along with the GNU C Library; see the file COPYING.LIB. If
18 not, see <http://www.gnu.org/licenses/>. */
19
20#include <errno.h>
21#include <signal.h>
22#include <stdio.h>
23#include <time.h>
24#include <unistd.h>
25#include <stdlib.h>
26#include <stdint.h>
27
28
29static void
30notify_func1 (union sigval sigval)
31{
32 puts ("notify_func1");
33}
34
35
36static void
37notify_func2 (union sigval sigval)
38{
39 puts ("notify_func2");
40}
41
42
43static void
44signal_func (int sig)
45{
46 static const char text[] = "signal_func\n";
47 signal (sig, signal_func);
48 write (STDOUT_FILENO, text, sizeof text - 1);
49}
50
51static void
52intr_sleep (int sec)
53{
54 struct timespec ts;
55
56 ts.tv_sec = sec;
57 ts.tv_nsec = 0;
58
59 while (nanosleep (&ts, &ts) == -1 && errno == EINTR)
60 ;
61}
62
63#define ZSIGALRM 14
64
65
66int
67main (void)
68{
69 struct timespec ts;
70 timer_t timer_sig, timer_thr1, timer_thr2;
71 int retval;
72 struct sigevent sigev1 =
73 {
74 .sigev_notify = SIGEV_SIGNAL,
75 .sigev_signo = ZSIGALRM
76 };
77 struct sigevent sigev2;
78 struct itimerspec itimer1 = { { 0, 200000000 }, { 0, 200000000 } };
79 struct itimerspec itimer2 = { { 0, 100000000 }, { 0, 500000000 } };
80 struct itimerspec itimer3 = { { 0, 150000000 }, { 0, 300000000 } };
81 struct itimerspec old;
82
83 retval = clock_gettime (CLOCK_REALTIME, &ts);
84
85 sigev2.sigev_notify = SIGEV_THREAD;
86 sigev2.sigev_notify_function = notify_func1;
87 sigev2.sigev_notify_attributes = NULL;
88 /* It is unnecessary to do the following but to set a good example
89 we do it anyhow. */
90 sigev2.sigev_value.sival_ptr = NULL;
91
92 setvbuf (stdout, 0, _IOLBF, 0);
93
94 printf ("clock_gettime returned %d, timespec = { %jd, %jd }\n",
95 retval, (intmax_t) ts.tv_sec, (intmax_t) ts.tv_nsec);
96
97 retval = clock_getres (CLOCK_REALTIME, &ts);
98
99 printf ("clock_getres returned %d, timespec = { %jd, %jd }\n",
100 retval, (intmax_t) ts.tv_sec, (intmax_t) ts.tv_nsec);
101
102 if (timer_create (CLOCK_REALTIME, &sigev1, &timer_sig) != 0)
103 {
104 printf ("timer_create for timer_sig failed: %m\n");
105 exit (1);
106 }
107 if (timer_create (CLOCK_REALTIME, &sigev2, &timer_thr1) != 0)
108 {
109 printf ("timer_create for timer_thr1 failed: %m\n");
110 exit (1);
111 }
112 sigev2.sigev_notify_function = notify_func2;
113 if (timer_create (CLOCK_REALTIME, &sigev2, &timer_thr2) != 0)
114 {
115 printf ("timer_create for timer_thr2 failed: %m\n");
116 exit (1);
117 }
118
119 if (timer_settime (timer_thr1, 0, &itimer2, &old) != 0)
120 {
121 printf ("timer_settime for timer_thr1 failed: %m\n");
122 exit (1);
123 }
124 if (timer_settime (timer_thr2, 0, &itimer3, &old) != 0)
125 {
126 printf ("timer_settime for timer_thr2 failed: %m\n");
127 exit (1);
128 }
129
130 signal (ZSIGALRM, signal_func);
131
132 if (timer_settime (timer_sig, 0, &itimer1, &old) != 0)
133 {
134 printf ("timer_settime for timer_sig failed: %m\n");
135 exit (1);
136 }
137
138 intr_sleep (3);
139
140 if (timer_delete (timer_sig) != 0)
141 {
142 printf ("timer_delete for timer_sig failed: %m\n");
143 exit (1);
144 }
145 if (timer_delete (timer_thr1) != 0)
146 {
147 printf ("timer_delete for timer_thr1 failed: %m\n");
148 exit (1);
149 }
150
151 intr_sleep (3);
152
153 if (timer_delete (timer_thr2) != 0)
154 {
155 printf ("timer_delete for timer_thr2 failed: %m\n");
156 exit (1);
157 }
158
159 return 0;
160}
161

Warning: That file was not part of the compilation database. It may have many parsing errors.