| 1 | /* Test for sigtimedwait timeout. |
|---|
| 2 | Copyright (C) 2021-2024 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 <intprops.h> |
|---|
| 21 | #include <errno.h> |
|---|
| 22 | #include <signal.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 | |
|---|
| 29 | static int |
|---|
| 30 | test_sigtimedwait_timeout (bool zero_tmo) |
|---|
| 31 | { |
|---|
| 32 | /* We wait for half a second. */ |
|---|
| 33 | struct timespec ts; |
|---|
| 34 | xclock_gettime (CLOCK_REALTIME, ts: &ts); |
|---|
| 35 | struct timespec timeout = make_timespec (s: 0, ns: zero_tmo ? 0 : TIMESPEC_HZ/2); |
|---|
| 36 | ts = timespec_add (ts, timeout); |
|---|
| 37 | |
|---|
| 38 | /* Set sigset to just wait for timeout. */ |
|---|
| 39 | sigset_t ss_usr1; |
|---|
| 40 | sigemptyset (&ss_usr1); |
|---|
| 41 | sigaddset (&ss_usr1, SIGUSR1); |
|---|
| 42 | |
|---|
| 43 | int ret = sigtimedwait (set: &ss_usr1, NULL, timeout: &timeout); |
|---|
| 44 | if (ret != -1) |
|---|
| 45 | FAIL_EXIT1 ("sigtimedwait failed: %m\n" ); |
|---|
| 46 | |
|---|
| 47 | TEST_TIMESPEC_NOW_OR_AFTER (CLOCK_REALTIME, ts); |
|---|
| 48 | |
|---|
| 49 | return 0; |
|---|
| 50 | } |
|---|
| 51 | |
|---|
| 52 | static void |
|---|
| 53 | test_sigtimedwait_large_timeout (void) |
|---|
| 54 | { |
|---|
| 55 | support_create_timer (sec: 0, nsec: 100000000, false, NULL); |
|---|
| 56 | struct timespec ts = { TYPE_MAXIMUM (time_t), 0 }; |
|---|
| 57 | |
|---|
| 58 | sigset_t ss_usr1; |
|---|
| 59 | sigemptyset (&ss_usr1); |
|---|
| 60 | sigaddset (&ss_usr1, SIGUSR1); |
|---|
| 61 | |
|---|
| 62 | TEST_COMPARE (sigtimedwait (&ss_usr1, NULL, &ts), -1); |
|---|
| 63 | TEST_VERIFY (errno == EINTR || errno == EOVERFLOW); |
|---|
| 64 | } |
|---|
| 65 | |
|---|
| 66 | static int |
|---|
| 67 | do_test (void) |
|---|
| 68 | { |
|---|
| 69 | /* Check if sigtimedwait exits immediately. */ |
|---|
| 70 | test_sigtimedwait_timeout (true); |
|---|
| 71 | |
|---|
| 72 | /* Check if sigtimedwait exits after specified timeout. */ |
|---|
| 73 | test_sigtimedwait_timeout (false); |
|---|
| 74 | |
|---|
| 75 | test_sigtimedwait_large_timeout (); |
|---|
| 76 | |
|---|
| 77 | return 0; |
|---|
| 78 | } |
|---|
| 79 | |
|---|
| 80 | #include <support/test-driver.c> |
|---|
| 81 | |
|---|
