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/* Copyright (C) 2008-2020 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/>. */
#ifndef _SYS_TIMERFD_H
#define _SYS_TIMERFD_H 1
#include <time.h>
#include <bits/types/struct_itimerspec.h>
/* Get the platform-dependent flags. */
#include <bits/timerfd.h>
/* Bits to be set in the FLAGS parameter of `timerfd_settime'. */
enum
{
TFD_TIMER_ABSTIME = 1 << 0,
#define TFD_TIMER_ABSTIME TFD_TIMER_ABSTIME
TFD_TIMER_CANCEL_ON_SET = 1 << 1
#define TFD_TIMER_CANCEL_ON_SET TFD_TIMER_CANCEL_ON_SET
};
__BEGIN_DECLS
/* Return file descriptor for new interval timer source. */
extern int timerfd_create (__clockid_t __clock_id, int __flags) __THROW;
/* Set next expiration time of interval timer source UFD to UTMR. If
FLAGS has the TFD_TIMER_ABSTIME flag set the timeout value is
absolute. Optionally return the old expiration time in OTMR. */
extern int timerfd_settime (int __ufd, int __flags,
const struct itimerspec *__utmr,
struct itimerspec *__otmr) __THROW;
/* Return the next expiration time of UFD. */
extern int timerfd_gettime (int __ufd, struct itimerspec *__otmr) __THROW;
__END_DECLS
#endif /* sys/timerfd.h */
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