/* Copyright (C) 2008-2018 Free Software Foundation, Inc.

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This file is part of the GNU C Library.

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The GNU C Library is free software; you can redistribute it and/or

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modify it under the terms of the GNU Lesser General Public

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License as published by the Free Software Foundation; either

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version 2.1 of the License, or (at your option) any later version.

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The GNU C Library is distributed in the hope that it will be useful,

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but WITHOUT ANY WARRANTY; without even the implied warranty of

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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU

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Lesser General Public License for more details.

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You should have received a copy of the GNU Lesser General Public

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License along with the GNU C Library; if not, see

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<http://www.gnu.org/licenses/>. */

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#ifndef _SYS_TIMERFD_H

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#define _SYS_TIMERFD_H 1

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#include <time.h>

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#include <bits/types/struct_itimerspec.h>

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/* Get the platform-dependent flags. */

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#include <bits/timerfd.h>

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/* Bits to be set in the FLAGS parameter of `timerfd_settime'. */

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enum

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{

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TFD_TIMER_ABSTIME = 1 << 0,

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#define TFD_TIMER_ABSTIME TFD_TIMER_ABSTIME

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TFD_TIMER_CANCEL_ON_SET = 1 << 1

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#define TFD_TIMER_CANCEL_ON_SET TFD_TIMER_CANCEL_ON_SET

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};

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__BEGIN_DECLS

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/* Return file descriptor for new interval timer source. */

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extern int timerfd_create (__clockid_t __clock_id, int __flags) __THROW;

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/* Set next expiration time of interval timer source UFD to UTMR. If

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FLAGS has the TFD_TIMER_ABSTIME flag set the timeout value is

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absolute. Optionally return the old expiration time in OTMR. */

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extern int timerfd_settime (int __ufd, int __flags,

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const struct itimerspec *__utmr,

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struct itimerspec *__otmr) __THROW;

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/* Return the next expiration time of UFD. */

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extern int timerfd_gettime (int __ufd, struct itimerspec *__otmr) __THROW;

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__END_DECLS

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#endif /* sys/timerfd.h */

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