diff options
Diffstat (limited to 'nptl/sem_clockwait.c')
-rw-r--r-- | nptl/sem_clockwait.c | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/nptl/sem_clockwait.c b/nptl/sem_clockwait.c new file mode 100644 index 0000000000..21628df524 --- /dev/null +++ b/nptl/sem_clockwait.c @@ -0,0 +1,46 @@ +/* sem_clockwait -- wait on a semaphore with timeout using the specified + clock. + + Copyright (C) 2019 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + 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 <time.h> +#include "sem_waitcommon.c" + +int +sem_clockwait (sem_t *sem, clockid_t clockid, + const struct timespec *abstime) +{ + /* Check that supplied clockid is one we support, even if we don't end up + waiting. */ + if (!futex_abstimed_supported_clockid (clockid)) + { + __set_errno (EINVAL); + return -1; + } + + if (! valid_nanoseconds (abstime->tv_nsec)) + { + __set_errno (EINVAL); + return -1; + } + + if (__new_sem_wait_fast ((struct new_sem *) sem, 0) == 0) + return 0; + else + return __new_sem_wait_slow ((struct new_sem *) sem, clockid, abstime); +} |