hti/HtiCommPlugins/HtiIPCommPlugin/src/HtiIPCommServerClient.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Fri, 16 Apr 2010 16:37:27 +0300
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parent 0 a03f92240627
permissions -rw-r--r--
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/*
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* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description:  Implementation of the client side interface to HtiIPCommServer
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*
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*/
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// INCLUDE FILES
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#include <e32uid.h>
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#include <HtiLogging.h>
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#include "HtiIPCommServerCommon.h"
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#include "HtiIPCommServerClient.h"
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// CONSTANTS
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const TUint KIPCommServerDefaultMessageSlots = 4; // Read, write, readCancel, writeCancel
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//---------------------------------------------------------------------------
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static TInt StartServer()
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    {
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    const TUidType serverUid( KNullUid, KNullUid, KIPCommServerUid3 );
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    RProcess server;
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    TInt r = server.Create( KIPCommServerName, KNullDesC, serverUid);
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    if ( r != KErrNone )
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        return r;
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    TRequestStatus stat;
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    server.Rendezvous( stat );
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    if ( stat != KRequestPending )
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        server.Kill(0);     // abort startup
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    else
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        server.Resume();    // logon OK - start the server
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    User::WaitForRequest( stat );   //wait for start or death
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    // we can't use the 'exit reason' if the server panicked as this
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    // is the panic 'reason' and may be '0' which cannot be distinguished
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    // from KErrNone
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    r = ( server.ExitType() == EExitPanic ) ? KErrGeneral : stat.Int();
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    server.Close();
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    return r;
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    }
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//---------------------------------------------------------------------------
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EXPORT_C RHtiIPCommServer::RHtiIPCommServer()
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    {
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    }
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//---------------------------------------------------------------------------
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EXPORT_C TInt RHtiIPCommServer::Connect()
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    {
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    HTI_LOG_TEXT( "RHtiIPCommServer::Connect" );
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    // Connect to the server, attempting to start it if necessary
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    TInt retry=2;
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    for (;;)
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        {
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        TInt r = CreateSession( KIPCommServerName,
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                                Version(),
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                                KIPCommServerDefaultMessageSlots );
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        HTI_LOG_FORMAT( "CreateSession %d", r );
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        if ( r != KErrNotFound && r != KErrServerTerminated )
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            return r;
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        if (--retry==0)
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            return r;
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        r = StartServer();
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        HTI_LOG_FORMAT( "StartServer %d", r );
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        if ( r != KErrNone && r != KErrAlreadyExists )
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            return r;
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        }
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    }
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//---------------------------------------------------------------------------
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EXPORT_C void RHtiIPCommServer::Close()
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    {
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    HTI_LOG_FUNC_IN( "RHtiIPCommServer::Close" );
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    // Use thread finder to find the server thread
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    TFullName threadName;
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    TFullName matchPattern;
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    matchPattern.Append( _L( "*" ) );
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    matchPattern.Append( KIPCommServerName );
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    matchPattern.Append( _L( "*" ) );
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    TFindThread threadFinder;
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    threadFinder.Find( matchPattern );
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    TInt err = threadFinder.Next( threadName );
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    if ( err )
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        {
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        HTI_LOG_FORMAT( "RHtiIPCommServer::Close: Failed to find server thread: %d", err );
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        return;
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        }
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    HTI_LOG_TEXT( "RHtiIPCommServer::Close: Found server thread:" );
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    HTI_LOG_DES( threadName );
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    RThread thread;
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    err = thread.Open( threadName );
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    if ( err )
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        {
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        HTI_LOG_FORMAT( "RHtiIPCommServer::Close: Failed to open server thread: %d", err );
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        }
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    else
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        {
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        // Close this session. Causes a call to ~CHtiIPCommServerSession which should
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        // stop the active scheduler in IPCommServer
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        RSessionBase::Close();
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        // For clean server stop, wait for its death
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        HTI_LOG_TEXT( "RHtiIPCommServer::Close: Waiting for server thread to die..." );
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        TRequestStatus status;
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        thread.Logon( status );
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        User::WaitForRequest( status );
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        HTI_LOG_TEXT( "RHtiIPCommServer::Close: Server thread dead." );
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        }
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    thread.Close();
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    HTI_LOG_FUNC_OUT( "RHtiIPCommServer::Close" );
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    }
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//---------------------------------------------------------------------------
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EXPORT_C TVersion RHtiIPCommServer::Version(void) const
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    {
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    return ( TVersion( KIPCommServerMajorVersionNumber,
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                       KIPCommServerMinorVersionNumber,
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                       KIPCommServerBuildVersionNumber ) );
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    }
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//---------------------------------------------------------------------------
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EXPORT_C TInt RHtiIPCommServer::GetSendBufferSize() const
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    {
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    return KIPCommServerSendBufferMaxSize;
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    }
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//---------------------------------------------------------------------------
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EXPORT_C TInt RHtiIPCommServer::GetReceiveBufferSize() const
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    {
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    return KIPCommServerReceiveBufferMaxSize;
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    }
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//---------------------------------------------------------------------------
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EXPORT_C void RHtiIPCommServer::Receive(TDes8& aData,
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                                        TRequestStatus& aStatus)
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    {
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    SendReceive( EIPCommServerRecv, TIpcArgs( &aData ), aStatus );
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    }
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//---------------------------------------------------------------------------
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EXPORT_C void RHtiIPCommServer::Send(const TDesC8& aData,
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                                        TRequestStatus& aStatus)
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    {
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    SendReceive( EIPCommServerSend, TIpcArgs( &aData ), aStatus );
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    }
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//---------------------------------------------------------------------------
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EXPORT_C void RHtiIPCommServer::CancelReceive()
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    {
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    SendReceive( EIPCommServerCancelRecv, TIpcArgs( NULL ) );
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    }
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//---------------------------------------------------------------------------
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EXPORT_C void RHtiIPCommServer::CancelSend()
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    {
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    SendReceive( EIPCommServerCancelSend, TIpcArgs( NULL ) );
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    }
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// End of the file