diff -r 000000000000 -r 0ce1b5ce9557 systemswstubs/examplecommonisc/IscDriver/src/IscSendQueue.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/systemswstubs/examplecommonisc/IscDriver/src/IscSendQueue.cpp	Thu Jan 14 07:14:53 2010 +0200
@@ -0,0 +1,146 @@
+/*
+* Copyright (c) 2005 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:  An example implementation for ISC Driver Reference
+*
+*/
+
+
+
+// INCLUDE FILES
+#include <kernel.h>
+#include "IscSendQueue.h"
+#include "IscTrace.h"
+
+// EXTERNAL DATA STRUCTURES
+
+// EXTERNAL FUNCTION PROTOTYPES  
+
+// CONSTANTS
+const TInt KImpossibleChannelId( 255 );
+
+// MACROS
+
+// LOCAL CONSTANTS AND MACROS
+
+// MODULE DATA STRUCTURES
+
+// LOCAL FUNCTION PROTOTYPES
+
+// FORWARD DECLARATIONS
+
+
+// ============================ MEMBER FUNCTIONS ===============================
+
+// -----------------------------------------------------------------------------
+// DIscSendQueue::DIscSendQueue
+// C++ default constructor can NOT contain any code, that
+// might leave.
+// -----------------------------------------------------------------------------
+//
+EXPORT_C DIscSendQueue::DIscSendQueue( TUint32** aQueue, TIscSendFrameInfo** aParameterQueue, TUint16 aSize )
+         :iParameterQueue( aParameterQueue )
+    {
+    iHead  = 0;
+    iTail  = 0;
+    iCount = 0;
+    iQueue = aQueue;
+    iSize  = aSize;
+    for ( TInt i( 0 ); i < aSize; i++ )
+        {
+        iParameterQueue[i]->iChannelId = KImpossibleChannelId;
+        iParameterQueue[i]->iChannelPtr = NULL;
+        iParameterQueue[i]->iFrameInfo = NULL;
+        }
+    E_TRACE( ( _T( "ISQ:ISQ %d 0x%x" ), iSize, iQueue ) );
+    }
+    
+// Destructor
+EXPORT_C DIscSendQueue::~DIscSendQueue()
+    {
+    iHead       = 0;
+    iTail       = 0;
+    iCount      = 0;
+    iQueue      = NULL;
+    iParameterQueue = NULL;
+    iSize       = 0;
+    }
+
+
+// -----------------------------------------------------------------------------
+// DIscSendQueue::Add
+// Function to add element to queue
+// ( other items were commented in a header ).
+// -----------------------------------------------------------------------------
+//
+EXPORT_C TInt DIscSendQueue::Add( TAny* anEntry, TUint16 aId, DIscChannel* aChannelPtr, TAny* aFrameInfo )
+    {
+    E_TRACE( ( _T( "ISQ:A %d, 0x%x" ), iCount, iQueue ) );
+
+    TInt irqLevel = DisableIrqs();
+
+    if ( iCount == iSize || iSize == 0 )
+        {
+        RestoreIrqs( irqLevel );
+        return KErrNoMemory;//EFalse;
+        }
+
+    /* place the buffer into the queue */
+    iQueue[ iTail ] = ( TUint32* )( anEntry );
+
+    TIscSendFrameInfo* tmp = iParameterQueue[ iTail ];
+    // Set additional info for send frame
+    tmp->iChannelId = aId;
+    
+    tmp->iChannelPtr = aChannelPtr;
+
+    tmp->iFrameInfo = aFrameInfo;
+
+    /* adjust tail pointer */
+    iTail = ++iTail % iSize;
+
+    /* remember the amount of the requests in the queue */
+    iCount++;
+
+    RestoreIrqs( irqLevel );
+
+    return KErrNone;
+    }
+
+// -----------------------------------------------------------------------------
+// DIscSendQueue::GetFirstFrameInfo
+// Returns a frist frame info from list.
+// (other items were commented in a header).
+// -----------------------------------------------------------------------------
+//
+EXPORT_C TIscSendFrameInfo* DIscSendQueue::GetFirstFrameInfo()
+    {
+    E_TRACE( ( _T( "ISQ:G(%d, 0x%x)" ), iCount, iQueue ) );
+
+    TIscSendFrameInfo* result;
+
+    TInt irqLevel = DisableIrqs();
+
+    if ( iCount == 0 || iSize == 0 )
+        {
+        RestoreIrqs( irqLevel );
+        return NULL;
+        }
+
+    result = iParameterQueue[ iHead ];
+    
+    RestoreIrqs( irqLevel );
+
+    return result;
+    }
+