// 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