traceservices/tracefw/ulogger/src/pluginframework/pluginallocator.cpp
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     1 // Copyright (c) 2007-2009 Nokia Corporation and/or its subsidiary(-ies).
       
     2 // All rights reserved.
       
     3 // This component and the accompanying materials are made available
       
     4 // under the terms of "Eclipse Public License v1.0"
       
     5 // which accompanies this distribution, and is available
       
     6 // at the URL "http://www.eclipse.org/legal/epl-v10.html".
       
     7 //
       
     8 // Initial Contributors:
       
     9 // Nokia Corporation - initial contribution.
       
    10 //
       
    11 // Contributors:
       
    12 //
       
    13 // Description:
       
    14 //
       
    15 
       
    16 
       
    17 #include "pluginallocator.h"
       
    18 #include "uloggeroutputplugin.h"
       
    19 #include <e32cmn.h>
       
    20 #include <ecom/ecom.h>
       
    21 
       
    22 namespace Ulogger
       
    23 {
       
    24 
       
    25 /*!Default constructor.
       
    26 */
       
    27 CPluginAllocator::CPluginAllocator()
       
    28 	{
       
    29 	iOutputPluginBase = NULL;
       
    30 	iInputPluginBase = NULL;
       
    31 	}
       
    32 
       
    33 
       
    34 /*!Destructor.
       
    35 */
       
    36 EXPORT_C CPluginAllocator::~CPluginAllocator()
       
    37 	{	
       
    38 	if(iOutputPluginBase)
       
    39 		{		
       
    40 		delete iOutputPluginBase;
       
    41 		iOutputPluginBase = NULL;
       
    42 		}
       
    43 	iOutputLib.Close();
       
    44 		
       
    45 	if((iOutputLibName.Compare(iInputLibName)!=0) && iInputPluginBase)
       
    46 		{		
       
    47 		delete iInputPluginBase;
       
    48 		iInputPluginBase = NULL;
       
    49 		}
       
    50 	iInputLib.Close();
       
    51 
       
    52 	REComSession::FinalClose();
       
    53 	}
       
    54 
       
    55 
       
    56 /*!Standard Symbian OS construction method which leaves object on CleanupStack.
       
    57 */
       
    58 EXPORT_C CPluginAllocator* CPluginAllocator::NewLC(const TPtrC8& aOutputPluginName, const TPtrC8& aInputPluginName)
       
    59 	{
       
    60 	CPluginAllocator* obj = new (ELeave) CPluginAllocator();
       
    61 	CleanupStack::PushL(obj);
       
    62 	obj->ConstructL(aOutputPluginName, aInputPluginName);
       
    63 	return obj;
       
    64 	}
       
    65 
       
    66 
       
    67 /*!Standard Symbian OS construction method which does not leaves object on CleanupStack.
       
    68 */
       
    69 EXPORT_C CPluginAllocator* CPluginAllocator::NewL(const TPtrC8& aOutputPluginName, const TPtrC8& aInputPluginName)
       
    70 	{
       
    71 	CPluginAllocator* obj = CPluginAllocator::NewLC(aOutputPluginName, aInputPluginName);
       
    72 	CleanupStack::Pop(); //obj
       
    73 	return obj;
       
    74 	}
       
    75 
       
    76 
       
    77 /*!Standard Symbian OS construction method.
       
    78 */
       
    79 EXPORT_C void CPluginAllocator::ConstructL(const TPtrC8& aOutputPluginName, const TPtrC8& aInputPluginName)
       
    80 	{	
       
    81 	//create output and control channels
       
    82 	User::LeaveIfError(this->CreateChannels(aOutputPluginName, aInputPluginName));
       
    83 	}
       
    84 
       
    85 /*!This function create Output channel according to aOutputSettings.
       
    86 */
       
    87 TInt CPluginAllocator::CreateChannels(const TPtrC8& aOutputPluginName, const TPtrC8& aInputPluginName)
       
    88 	{
       
    89 	TInt retVal = KErrNone;
       
    90 	
       
    91 	iOutputLibName.Copy(aOutputPluginName);
       
    92 	iInputLibName.Copy(aInputPluginName);
       
    93 
       
    94 	//create output plugin
       
    95 	iOutputPluginBase = (CPlugin*)(CPlugin::NewL(aOutputPluginName));
       
    96 	
       
    97 	//create control plugin
       
    98 	if(iOutputLibName.Compare(iInputLibName) == 0)
       
    99 		{
       
   100 		//share implementation
       
   101 		if(aInputPluginName.Length()>0)
       
   102 			iInputPluginBase = iOutputPluginBase;
       
   103 		}
       
   104 	else
       
   105 		{
       
   106 		//create new instance of control plugin
       
   107 		//ulogger can work without control plugin as this is optional functionality
       
   108 		if(aInputPluginName.Length()>0)
       
   109 			iInputPluginBase = (CPlugin*)(CPlugin::NewL(aInputPluginName));
       
   110 		}
       
   111 	
       
   112 	return retVal;
       
   113 	}
       
   114 
       
   115 
       
   116 EXPORT_C MOutputPlugin* CPluginAllocator::GetOutputPlugin()
       
   117 	{
       
   118 	if(iOutputPluginBase)
       
   119 		return (MOutputPlugin*)iOutputPluginBase->GetInterfaceL(MOutputPlugin::iInterfaceId);
       
   120 	else
       
   121 		return NULL;
       
   122 	}
       
   123 
       
   124 EXPORT_C MInputPlugin* CPluginAllocator::GetInputPlugin()
       
   125 	{
       
   126 	if(iInputPluginBase)
       
   127 		return (MInputPlugin*)iInputPluginBase->GetInterfaceL(MInputPlugin::iInterfaceId);
       
   128 	else
       
   129 		return NULL;
       
   130 	}
       
   131 
       
   132 EXPORT_C void CPluginAllocator::ListAllImplementationsL(RImplInfoPtrArray& aImplInfoArray)
       
   133 	{
       
   134 	REComSession::ListImplementationsL(KCPluginUid, aImplInfoArray);
       
   135 	}
       
   136 
       
   137 } //</namespace Ulogger>