// Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).

// All rights reserved.

// This component and the accompanying materials are made available

// under the terms of "Eclipse Public License v1.0"

// which accompanies this distribution, and is available

// at the URL "http://www.eclipse.org/legal/epl-v10.html".

//

// Initial Contributors:

// Nokia Corporation - initial contribution.

//

// Contributors:

//

// Description:

// Name        : timer_funcs.cpp

// Part of     : librt-timer specific cpp file

// This is a project specific source file for building the 

// timer related functions as part of librt library.

// 

//

#include <signal.h>

#include <time.h>

#include <errno.h>

#include "lposix.h"

#include "timerhandler.h"

const TInt KErrWouldBlock=-1000;

extern "C" {

/* Create new per-process timer using CLOCK_ID.  */

EXPORT_C int timer_create (clockid_t __clock_id,

                         struct sigevent *__restrict __evp,

                         timer_t *__restrict __timerid)

	{

	if(__timerid == NULL)

		{

		errno = EFAULT;	

		return -1;

		}

	if(__clock_id != CLOCK_REALTIME)

		{

		errno = EINVAL;	

		return -1;

		}

	int err = getTimerHandler()->CreateTimer(*__timerid, __evp);

	if (err == KErrWouldBlock)

		{

		return MapError(EAGAIN, errno);

		}

	return MapError(err, errno);

	}

/* Delete timer TIMERID.  */

EXPORT_C int timer_delete (timer_t __timerid)

	{

	return MapError(getTimerHandler()->RemoveTimer(__timerid),errno);

	}

/* Set timer TIMERID to VALUE, returning old value in OVLAUE.  */

EXPORT_C int timer_settime (timer_t __timerid, int __flags,

                          const struct itimerspec *__restrict __value,

                          struct itimerspec *__restrict __ovalue)

	{

	return MapError(getTimerHandler()->SetTime(__timerid, __flags, __value, __ovalue),errno);

	}

/* Get current value of timer TIMERID and store it in VLAUE.  */

EXPORT_C int timer_gettime (timer_t __timerid, struct itimerspec *__value)

	{

	if(__value == NULL)

		{

		errno = EFAULT;	

		return -1;

		}

	return MapError(getTimerHandler()->Time(__timerid, __value),errno);

	}

/* Get expiration overrun for timer TIMERID.  */

EXPORT_C int timer_getoverrun (timer_t __timerid)

	{

#if (!defined SYMBIAN_OE_POSIX_SIGNALS || !defined SYMBIAN_OE_LIBRT)

	__timerid = __timerid;//warning fix	

	errno = ENOSYS;

	return -1;

#else

	int overrun = 0;

	int lerr = MapError(getTimerHandler()->OverrunCount(__timerid, overrun),errno); 	

	if(lerr == -1 && errno == EINVAL)

		{

		return lerr;	

		}

	else

		{

		overrun = (overrun <= 1) ? 0 : (overrun-1);

		}

	return overrun;

#endif		

	}

} // extern "C"

//EOF