1 /* Test for ppoll timeout
2 Copyright (C) 2021 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <https://www.gnu.org/licenses/>. */
18
19 #include <time.h>
20 #include <poll.h>
21 #include <errno.h>
22 #include <intprops.h>
23 #include <support/check.h>
24 #include <support/xtime.h>
25 #include <support/timespec.h>
26 #include <support/support.h>
27 #include <stdbool.h>
28
test_ppoll_timeout(bool zero_tmo)29 static int test_ppoll_timeout (bool zero_tmo)
30 {
31 /* We wait for half a second. */
32 struct timespec ts;
33 xclock_gettime (CLOCK_REALTIME, &ts);
34 struct timespec timeout = make_timespec (0, zero_tmo ? 0 : TIMESPEC_HZ/2);
35 ts = timespec_add (ts, timeout);
36
37 /* Ignore fds - just wait for timeout. */
38 struct pollfd fds = { -1, 0, 0 };
39 TEST_COMPARE (ppoll (&fds, 1, &timeout, 0), 0);
40
41 TEST_TIMESPEC_NOW_OR_AFTER (CLOCK_REALTIME, ts);
42
43 return 0;
44 }
45
46 static void
test_ppoll_large_timeout(void)47 test_ppoll_large_timeout (void)
48 {
49 support_create_timer (0, 100000000, false, NULL);
50 struct timespec ts = { TYPE_MAXIMUM (time_t), 0 };
51 struct pollfd fds = { -1, 0, 0 };
52 TEST_COMPARE (ppoll (&fds, 1, &ts, 0), -1);
53 TEST_VERIFY (errno == EINTR || errno == EOVERFLOW);
54 }
55
56 static int
do_test(void)57 do_test (void)
58 {
59 /* Check if ppoll exits immediately. */
60 test_ppoll_timeout (true);
61
62 /* Check if ppoll exits after specified timeout. */
63 test_ppoll_timeout (false);
64
65 /* Check if ppoll with large timeout. */
66 test_ppoll_large_timeout ();
67
68 return 0;
69 }
70
71 #include <support/test-driver.c>
72