diff options
Diffstat (limited to 'sysdeps/pthread/tst-sem5.c')
| -rw-r--r-- | sysdeps/pthread/tst-sem5.c | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/sysdeps/pthread/tst-sem5.c b/sysdeps/pthread/tst-sem5.c new file mode 100644 index 0000000000..766274e50d --- /dev/null +++ b/sysdeps/pthread/tst-sem5.c @@ -0,0 +1,63 @@ +/* Copyright (C) 2002-2020 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Ulrich Drepper <drepper@redhat.com>, 2002. + + 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; if not, see + <https://www.gnu.org/licenses/>. */ + +#include <errno.h> +#include <semaphore.h> +#include <time.h> +#include <unistd.h> +#include <sys/time.h> +#include <support/check.h> +#include <support/timespec.h> +#include <support/xtime.h> + +/* A bogus clock value that tells run_test to use sem_timedwait rather than + sem_clockwait. */ +#define CLOCK_USE_TIMEDWAIT (-1) + +static void +do_test_clock (clockid_t clockid) +{ + const clockid_t clockid_for_get = + clockid == CLOCK_USE_TIMEDWAIT ? CLOCK_REALTIME : clockid; + sem_t s; + struct timespec ts; + + TEST_COMPARE (sem_init (&s, 0, 1), 0); + TEST_COMPARE (TEMP_FAILURE_RETRY (sem_wait (&s)), 0); + + /* We wait for half a second. */ + xclock_gettime (clockid_for_get, &ts); + ts = timespec_add (ts, make_timespec (0, TIMESPEC_HZ/2)); + + errno = 0; + TEST_COMPARE (TEMP_FAILURE_RETRY ((clockid == CLOCK_USE_TIMEDWAIT) + ? sem_timedwait (&s, &ts) + : sem_clockwait (&s, clockid, &ts)), -1); + TEST_COMPARE (errno, ETIMEDOUT); + TEST_TIMESPEC_NOW_OR_AFTER (clockid_for_get, ts); +} + +static int do_test (void) +{ + do_test_clock (CLOCK_USE_TIMEDWAIT); + do_test_clock (CLOCK_REALTIME); + do_test_clock (CLOCK_MONOTONIC); + return 0; +} + +#include <support/test-driver.c> |