1 /*
2 * Copyright (C) 2015-2017 Cyril Hrubis <chrubis@suse.cz>
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
12 * the GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software Foundation,
16 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17 */
18
19 /*
20 * Check that poll() timeouts correctly.
21 */
22 #include <errno.h>
23 #include <fcntl.h>
24 #include <sys/wait.h>
25 #include <sys/poll.h>
26
27 #include "tst_timer_test.h"
28
29 static int fds[2];
30
sample_fn(int clk_id,long long usec)31 int sample_fn(int clk_id, long long usec)
32 {
33 unsigned int sleep_ms = usec / 1000;
34
35 struct pollfd pfds[] = {
36 {.fd = fds[0], .events = POLLIN}
37 };
38
39 tst_timer_start(clk_id);
40 TEST(poll(pfds, 1, sleep_ms));
41 tst_timer_stop();
42 tst_timer_sample();
43
44 if (TST_RET != 0) {
45 tst_res(TFAIL | TTERRNO, "poll() returned %li", TST_RET);
46 return 1;
47 }
48
49 return 0;
50 }
51
setup(void)52 static void setup(void)
53 {
54 SAFE_PIPE(fds);
55 }
56
cleanup(void)57 static void cleanup(void)
58 {
59 if (fds[0] > 0)
60 SAFE_CLOSE(fds[0]);
61
62 if (fds[1] > 0)
63 SAFE_CLOSE(fds[1]);
64 }
65
66 static struct tst_test test = {
67 .scall = "poll()",
68 .sample = sample_fn,
69 .setup = setup,
70 .cleanup = cleanup,
71 };
72