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

     2 // All rights reserved.

     3 // This component and the accompanying materials are made available

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

     5 // which accompanies this distribution, and is available

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

     7 //

     8 // Initial Contributors:

     9 // Nokia Corporation - initial contribution.

    10 //

    11 // Contributors:

    12 //

    13 // Description:

    14 // Name        : timer_funcs.cpp

    15 // Part of     : librt-timer specific cpp file

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

    17 // timer related functions as part of librt library.

    18 // 

    19 //

    20 

    21 #include <signal.h>

    22 #include <time.h>

    23 #include <errno.h>

    24 

    25 #include "lposix.h"

    26 #include "timerhandler.h"

    27 

    28 const TInt KErrWouldBlock=-1000;

    29 

    30 extern "C" {

    31 

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

    33 EXPORT_C int timer_create (clockid_t __clock_id,

    34                          struct sigevent *__restrict __evp,

    35                          timer_t *__restrict __timerid)

    36 	{

    37 	if(__timerid == NULL)

    38 		{

    39 		errno = EFAULT;	

    40 		return -1;

    41 		}

    42 		

    43 	if(__clock_id != CLOCK_REALTIME)

    44 		{

    45 		errno = EINVAL;	

    46 		return -1;

    47 		}

    48 		

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

    50 	 

    51 	if (err == KErrWouldBlock)

    52 		{

    53 		return MapError(EAGAIN, errno);

    54 		}

    55 	

    56 	return MapError(err, errno);

    57 	}

    58 

    59 

    60 /* Delete timer TIMERID.  */

    61 EXPORT_C int timer_delete (timer_t __timerid)

    62 	{

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

    64 	}

    65 

    66 

    67 

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

    69 EXPORT_C int timer_settime (timer_t __timerid, int __flags,

    70                           const struct itimerspec *__restrict __value,

    71                           struct itimerspec *__restrict __ovalue)

    72 	{

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

    74 	}

    75 

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

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

    78 	{

    79 	if(__value == NULL)

    80 		{

    81 		errno = EFAULT;	

    82 		return -1;

    83 		}

    84 		

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

    86 	}

    87 

    88 /* Get expiration overrun for timer TIMERID.  */

    89 EXPORT_C int timer_getoverrun (timer_t __timerid)

    90 	{

    91 		

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

    93 	__timerid = __timerid;//warning fix	

    94 	errno = ENOSYS;

    95 	return -1;

    96 #else

    97 	int overrun = 0;

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

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

   100 		{

   101 		return lerr;	

   102 		}

   103 	else

   104 		{

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

   106 		}

   107  	

   108 	return overrun;

   109 #endif		

   110 	}

   111 

   112 } // extern "C"

   113 

   114 //EOF

   115 

   116