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/*
$Header: /cvs/src/chrony/sched.h,v 1.10 2002/02/28 23:27:14 richard Exp $
=======================================================================
chronyd/chronyc - Programs for keeping computer clocks accurate.
**********************************************************************
* Copyright (C) Richard P. Curnow 1997-2002
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program 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
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*
**********************************************************************
=======================================================================
Exported header file for sched.c
*/
#ifndef GOT_SCHED_H
#define GOT_SCHED_H
#include "sysincl.h"
typedef unsigned long SCH_TimeoutID;
typedef unsigned long SCH_TimeoutClass;
static const SCH_TimeoutClass SCH_ReservedTimeoutValue = 0;
static const SCH_TimeoutClass SCH_NtpSamplingClass = 1;
static const SCH_TimeoutClass SCH_NtpBroadcastClass = 2;
typedef void* SCH_ArbitraryArgument;
typedef void (*SCH_FileHandler)(SCH_ArbitraryArgument);
typedef void (*SCH_TimeoutHandler)(SCH_ArbitraryArgument);
/* Exported functions */
/* Initialisation function for the module */
extern void SCH_Initialise(void);
/* Finalisation function for the module */
extern void SCH_Finalise(void);
/* Register a handler for when select goes true on a file descriptor */
extern void SCH_AddInputFileHandler
(int fd, /* The file descriptor */
SCH_FileHandler, /* The handler routine */
SCH_ArbitraryArgument /* An arbitrary passthrough argument to the handler */
);
extern void SCH_RemoveInputFileHandler(int fd);
/* This queues a timeout to elapse at a given (raw) local time */
extern SCH_TimeoutID SCH_AddTimeout(struct timeval *tv, SCH_TimeoutHandler, SCH_ArbitraryArgument);
/* This queues a timeout to elapse at a given delta time relative to the current (raw) time */
extern SCH_TimeoutID SCH_AddTimeoutByDelay(double delay, SCH_TimeoutHandler, SCH_ArbitraryArgument);
/* This queues a timeout in a particular class, ensuring that the
expiry time is at least a given separation away from any other
timeout in the same class */
extern SCH_TimeoutID SCH_AddTimeoutInClass(double min_delay, double separation,
SCH_TimeoutClass class,
SCH_TimeoutHandler handler, SCH_ArbitraryArgument);
/* The next one probably ought to return a status code */
extern void SCH_RemoveTimeout(SCH_TimeoutID);
extern void SCH_MainLoop(void);
extern void SCH_QuitProgram(void);
#endif /* GOT_SCHED_H */
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