/* Copyright (C) 2008 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, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */

#ifndef _SYS_TIMERFD_H
#define _SYS_TIMERFD_H 1

#include <time.h>


/* Bits to be set in the FLAGS parameter of `timerfd_create'. */
enum
{
TFD_CLOEXEC = 02000000,
#define TFD_CLOEXEC TFD_CLOEXEC
TFD_NONBLOCK = 04000
#define TFD_NONBLOCK TFD_NONBLOCK
};


/* Bits to be set in the FLAGS parameter of `timerfd_settime'. */
enum
{
TFD_TIMER_ABSTIME = 1 << 0
#define TFD_TIMER_ABSTIME TFD_TIMER_ABSTIME
};


__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 */