1 // Copyright (c) 2005-2009 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     : sem_microsleepwait_np.cpp

    15 // Part of  : PThread library

    16 // sem_microsleepwait_np call is implemented.

    17 // Version:

    18 //

    19 

    20 

    21 

    22 #include <e32def.h>

    23 #include <errno.h>

    24 

    25 #include "semaphore.h"

    26 #include "semaphoretypes.h"

    27 #include "pthread.h"

    28 

    29 

    30 int sem_microsleepwait_np (sem_t* sem, const long aSleepTime)

    31 {

    32     if (!sem || !(*sem) )

    33     {

    34         errno = EINVAL;

    35         return -1;

    36     }

    37 

    38     _sem_t* lsem = *sem;

    39     if(lsem->iState != _sem_t::EInitialized)

    40     {

    41         errno = EINVAL;

    42         return -1;

    43     }

    44 

    45     if(_cancelable_mutex_wait(lsem) != 0)

    46     {

    47         return -1;

    48     }

    49 

    50     int count = --(lsem->iCount);

    51     lsem->iMutex.Signal();

    52 

    53     int retval = 0;

    54     if(count <0)

    55     {

    56     //push to cleanup

    57 

    58     retval = lsem->iSemaphore.Wait(aSleepTime);

    59     if(retval != KErrNone)

    60     {

    61         //timeout

    62         //the semaphore count goes up

    63         lsem->iMutex.Wait();

    64         if(lsem->iState != _sem_t::EInitialized)

    65         {

    66             errno = EINVAL;

    67             return -1;

    68         }

    69         ++(lsem->iCount);

    70         lsem->iMutex.Signal();

    71         errno =  ETIMEDOUT;

    72         return -1;

    73     }

    74 

    75     //pop from cleanup

    76     }

    77     return 0;

    78 

    79 }//sem_microsleepwait_np()

    80 

    81 //End of File