diff -r 000000000000 -r a2952bb97e68 mpx/commonframework/common/src/mpxsessionretry.cpp --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mpx/commonframework/common/src/mpxsessionretry.cpp Thu Dec 17 08:55:47 2009 +0200 @@ -0,0 +1,164 @@ +/* +* Copyright (c) 2007 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: Client session retry implementation +* +*/ + +#include "mpxsessionretry.h" + + +enum { EFunctionType_SendReceive1, EFunctionType_SendReceive2}; + +// ============================== LOCAL FUNCTIONS ============================= + +// ---------------------------------------------------------------------------- +// Start server process +// ---------------------------------------------------------------------------- +// +LOCAL_C TInt StartServer(const TDesC& aImage) + { + RProcess server; + + TInt r = server.Create(aImage,KNullDesC); + if (r != KErrNone) + { + return r; + } + + TRequestStatus s; + server.Rendezvous(s); + if (s != KRequestPending) + { + server.Kill(0); + } + else + { + server.Resume(); + } + + User::WaitForRequest(s); + + r = (server.ExitType()==EExitPanic) ? KErrGeneral : s.Int(); + server.Close(); + + return r; + } + +// ============================== MEMBER FUNCTIONS ============================ + +// ---------------------------------------------------------------------------- +// Return the version info +// ---------------------------------------------------------------------------- +// +TVersion RMPXSessionRetry::Version() const + { + return iVersion; + } + +// ---------------------------------------------------------------------------- +// Connect to server +// ---------------------------------------------------------------------------- +// +TInt RMPXSessionRetry::Connect(const TDesC& aServer, + const TDesC& aImage, + const TVersion& aVersion) + { + iVersion = aVersion; + iServer = aServer; + iImage = aImage; + + TInt r = RSessionBase::CreateSession(iServer, iVersion, 2); + + if (r == KErrNotFound || r == KErrServerTerminated) + { + r = Reconnect(); + } + + return r; + } + +// ---------------------------------------------------------------------------- +// Reconnect to server +// ---------------------------------------------------------------------------- +// +TInt RMPXSessionRetry::Reconnect() + { + // make sure the current session is closed; it does no harm to close + // a session that is already closed + Close(); + + TInt r = StartServer(iImage); + + if (r == KErrNone || r == KErrAlreadyExists) + { + r = RSessionBase::CreateSession(iServer, iVersion, 2); + } + + return r; + } + +// ----------------------------------------------------------------------------- +// Send a message +// ----------------------------------------------------------------------------- +// +TInt RMPXSessionRetry::SendReceiveL(TInt aFunction) + { + TInt retVal = RSessionBase::SendReceive(aFunction); + + if (KErrServerTerminated == retVal) + { + Reconnect(); // try again in case IAD took down the server to replace it + retVal = RSessionBase::SendReceive(aFunction); + } + + return User::LeaveIfError(retVal); + } + +// ----------------------------------------------------------------------------- +// Send a message +// ----------------------------------------------------------------------------- +// +TInt RMPXSessionRetry::SendReceiveL(TInt aFunction, const TIpcArgs& aArgs) + { + TInt retVal = RSessionBase::SendReceive(aFunction,aArgs); + + if (KErrServerTerminated == retVal) + { + Reconnect(); // try again in case IAD took down the server to replace it + retVal = RSessionBase::SendReceive(aFunction,aArgs); + } + + return User::LeaveIfError(retVal); + } + +// ----------------------------------------------------------------------------- +// Send a message +// ----------------------------------------------------------------------------- +// +void RMPXSessionRetry::SendReceive(TInt aFunction, + TRequestStatus& aStatus) + { + RSessionBase::SendReceive(aFunction, aStatus); + } + +// ----------------------------------------------------------------------------- +// Send a message +// ----------------------------------------------------------------------------- +// +void RMPXSessionRetry::SendReceive(TInt aFunction, + const TIpcArgs& aArgs, + TRequestStatus& aStatus) + { + RSessionBase::SendReceive(aFunction, aArgs, aStatus); + }