--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/srsf/vcommandhandler/src/asyncworker.cpp Thu Dec 17 08:46:30 2009 +0200
@@ -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