1 /*

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

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

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

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description:   Has the main entry point of clockserver.exe

    15 *

    16 */

    17 

    18 // System includes

    19 #include <e32base.h>

    20 

    21 // User includes

    22 #include "clockservercommon.h"

    23 #include "clockservermain.h"

    24 #include "clockserver.h"

    25 

    26 // Literals

    27 _LIT( KLabelFault, "ClockServerThread-fault");

    28 

    29 // ---------------------------------------------------------

    30 // Fault(TSrvFault aFault)

    31 // rest of the details are commented in the header

    32 // ---------------------------------------------------------

    33 //

    34 GLDEF_C void Fault( TSrvFault aFault )

    35     {

    36     User::Panic( KLabelFault, aFault );

    37     }

    38 

    39 // ---------------------------------------------------------

    40 // TheServerThread( TAny* /*aPr*/ )

    41 // rest of the details are commented in the header

    42 // ---------------------------------------------------------

    43 //

    44 EXPORT_C TInt TheServerThread( TAny* /*aPr*/ )

    45     {

    46     RSemaphore semaphoreHandle;

    47 	// Check if a semaphore is already associated with ClockServer

    48     if( KErrNone != semaphoreHandle.OpenGlobal( KNameClockServerStartSemaphore ) )

    49         {

    50 		// If no, then create one.

    51         if( KErrNone != semaphoreHandle.CreateGlobal( KNameClockServerStartSemaphore, 0 ) )

    52             {

    53 			// There's a problem with creating the semaphore.

    54             Fault( EMainCreateSemaphore );

    55             }

    56         }

    57     else

    58         {

    59 		// The global semaphore is already there.

    60         semaphoreHandle.Close();

    61         return KErrNone;

    62         }

    63 

    64     __UHEAP_MARK;		// Mark beginning of the HEAP

    65     

    66 	TInt errCode = KErrNone ; 

    67 	

    68 	// Try renaming the current thread.

    69 	errCode = User::RenameThread( KNameClockServer );

    70     __ASSERT_ALWAYS( errCode == KErrNone || errCode == KErrAlreadyExists, Fault( EMainClockServerThreadRename ) );

    71 

    72 	// Construct and active scheduler

    73     CActiveScheduler* activeScheduler = new CActiveScheduler;

    74     __ASSERT_ALWAYS( activeScheduler != NULL, Fault( EMainCreateScheduler ) );

    75 

    76 	// Install the active scheduler

    77 	CActiveScheduler::Install( activeScheduler );

    78 	

    79     CTrapCleanup* trapCleanup = CTrapCleanup::New();

    80     CClkSrvMain* clockServer = NULL;

    81 

    82 	// Constructing the CClkSrvMain object, this inturn starts the server in CClkSrvMain::ConstructL -> StartL

    83     TRAPD( error, clockServer = CClkSrvMain::NewL() );

    84 	__ASSERT_DEBUG( !error, Fault( EMainServerNotStarted ) );

    85 

    86     if( KErrNone == error )

    87         {

    88 		// Start the active scheduler

    89         CActiveScheduler::Start();

    90         }

    91 	

    92 	// Cleanup

    93     delete clockServer;

    94     delete CActiveScheduler::Current();

    95     delete trapCleanup;

    96 

    97     __UHEAP_MARKEND;	// Mark end of the HEAP

    98 

    99     // Close the handle to the RSemaphore

   100 	semaphoreHandle.Close();

   101 

   102     return KErrNone;

   103     }

   104 

   105 // ---------------------------------------------------------

   106 // IsServerLoaded()

   107 // rest of the details are commented in the header

   108 // ---------------------------------------------------------

   109 //

   110 LOCAL_C TBool IsServerLoaded()

   111     {

   112     TFindServer findServer( KNameClockServer );

   113     TFullName fullName;

   114     return( findServer.Next( fullName ) == KErrNone );

   115     }

   116 

   117 // ---------------------------------------------------------

   118 // E32Main()

   119 // rest of the details are commented in the header

   120 // ---------------------------------------------------------

   121 //

   122 GLDEF_C TInt E32Main()

   123     {

   124     return ( IsServerLoaded() ? KErrInUse : TheServerThread( NULL ) );

   125     }

   126 

   127 

   128 // End of file