--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/srsf/vcommandhandler/src/asyncworker.cpp	Wed Sep 01 12:29:17 2010 +0100
@@ -0,0 +1,110 @@
+/*
+* Copyright (c) 2006 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:  Class that is able to pause the execution until the 
+*                asynchronous call resumes it. Knows how to leave the
+*                resumed function with the error code supplied by the
+*                resuming asynchronous call
+*
+*/
+
+
+#include "rubydebug.h"
+#include "asyncworker.h"
+
+// async worker panic code
+_LIT( KAsyncWorkerPanic, "AWRK" );
+
+CAsyncWorker* CAsyncWorker::NewLC()
+	{
+	CAsyncWorker* self = new (ELeave) CAsyncWorker;
+	CleanupStack::PushL( self );
+	return self;
+	}
+	
+CAsyncWorker* CAsyncWorker::NewL()
+	{
+	CAsyncWorker* self = CAsyncWorker::NewLC();
+	CleanupStack::Pop( self );
+	return self;
+	}
+	
+CAsyncWorker::~CAsyncWorker()
+	{
+	delete iWaiter;  // if any
+	}
+
+/**
+* Pauses the execution until StopAsyncWaitingL is called
+* Leaves if StopAsyncWaitingL is called with the negative error code
+* @leave KErrNotReady if another waiting is still in progress
+* @leave Leaves with the error code passed to StopAsyncWaitingL
+*/
+void CAsyncWorker::WaitForAsyncCallbackL()
+	{
+	/** @todo Change to RUBY_ASSERT_ALWAYS */
+	RUBY_DEBUG_BLOCKL( "CAsyncWorker::WaitForAsyncCallbackL" );
+	if( iWaiter )
+		{
+		RUBY_ERROR0( "CAsyncWorker::WaitForAsyncCallbackL Already waiting" );
+		}
+	
+	__ASSERT_ALWAYS( !iWaiter, User::Leave( KErrNotReady ) );
+	iErr = KErrNone;
+    iWaiter = new (ELeave) CActiveSchedulerWait;
+    iWaiter->Start();
+    delete iWaiter;
+    iWaiter = NULL;
+    User::LeaveIfError( iErr );
+	}
+
+/** 
+* Resumes the process paused by WaitForAsyncCallbackL
+* @param aErr Result code to pass to the 
+*        WaitForAsyncCallbackL error handling. Note, that 
+*        WaitForAsyncCallbackL leaves only if aErr is negative
+* @return KErrNotReady if no waiting is in progress. Otherwise KErrNone
+*/
+TInt CAsyncWorker::StopAsyncWaiting( TInt aErr )
+	{
+    RUBY_DEBUG1( "CAsyncWorker::StopAsyncWaitingL aErr [%d] ", aErr ); 
+    iErr = aErr;   
+    /** @todo Change to RUBY_ASSERT_ALWAYS */
+	if( !iWaiter )
+		{
+		RUBY_ERROR0( "CAsyncWorker::WaitForAsyncCallbackL Not waiting" );
+		}
+	if( !iWaiter)
+		{
+		return KErrNotReady;
+		}
+	
+    iWaiter->AsyncStop();
+    return KErrNone;
+	}
+	
+/**
+* Same as StopAsyncWaiting, but panics with AWRK <error code> instead 
+* of returning the error code
+* @see StopAsyncWaiting
+*/
+void CAsyncWorker::StopAsyncWaitingOrPanic( TInt aErr )
+	{
+	TInt err = StopAsyncWaiting( aErr );
+	if( err != KErrNone ) 
+		{
+		User::Panic( KAsyncWorkerPanic, err );
+		}
+	}
+	
+//End of file