1 // Copyright (c) 2007-2010 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 // Handler implementation for ascii printf

    15 //

    16 

    17 #ifndef __TRACECOREPRINTFTRACEHANDLER_H__

    18 #define __TRACECOREPRINTFTRACEHANDLER_H__

    19 

    20 

    21 // Include files

    22 #include <kernel/kernel.h>

    23 #include <TraceCoreNotificationReceiver.h>

    24 #include "TraceCoreHandler.h"

    25 

    26 

    27 // Forward declarations

    28 class DTraceCoreWriter;

    29 class DTraceCoreSettings;

    30 

    31 

    32 /**

    33  * Handler implementation for ascii printf

    34  */

    35 NONSHARABLE_CLASS( DTraceCorePrintfTraceHandler ) : public MTraceCoreNotificationReceiver, 

    36 													public DTraceCoreHandler

    37 		                                                   

    38     {

    39 public:

    40 

    41 	/**

    42      * Constructor

    43      */

    44     DTraceCorePrintfTraceHandler();

    45     

    46     /**

    47      * Destructor

    48      */

    49     ~DTraceCorePrintfTraceHandler();

    50     

    51     /**

    52      * Initializes this handler

    53      */

    54     TInt Init();

    55     

    56     /**

    57      * Prepares the change in writer

    58      * 

    59      * @param aWriter the new writer

    60      */

    61     void PrepareSetWriter( DTraceCoreWriter* aWriter );

    62   

    63     /**

    64      * Kern/RDebug::Printf handler function

    65      */

    66     static TBool PrintfHandler( const TDesC8& aText, TTraceSource aTraceSource );

    67     

    68     /**

    69      * Callback function for Trace Activation

    70      * from MTraceCoreNotificationReceiver

    71      * 

    72      * @param aComponentId

    73      * @param aGroupId

    74      * @return None          

    75      */

    76     void TraceActivated( TUint32 aComponentId, TUint16 aGroupId  );

    77     

    78     /**

    79      * Callback function for Trace Deactivation

    80      * from MTraceCoreNotificationReceiver

    81      * 

    82      * @param aComponentId

    83      * @param aGroupId

    84      * @return None     

    85      */

    86     void TraceDeactivated( TUint32 aComponentId, TUint16 aGroupId  );

    87     

    88 private:

    89     

    90     /**

    91      * Checks if there is a dropped trace and sends dropped trace message and

    92      * normal trace as well if writer is ready to write that data.

    93      *

    94      * @param aHandler Printf trace handler

    95      */

    96     inline static void HandleTrace(const TDesC8& aText);    

    97 

    98     /**

    99      * Trace output function

   100      */

   101 	void DebugPrint( const TDesC8& aDes );

   102     

   103     /**

   104      * Static instance, accessed from the printf trace handler callback

   105      */

   106     static DTraceCorePrintfTraceHandler* iInstance;

   107     

   108     /**

   109      * Printf trace handler

   110      */

   111     TBool ( *iPrintfHandler )( const TDesC8&, TTraceSource );

   112     

   113     /**

   114 	 * State of the Printf activations

   115  	 */

   116 	static TBool iKernPrintfActive;

   117 	static TBool iRDebugPrintfActive;

   118 	static TBool iPlatSecPrintfActive;

   119 

   120     };

   121 

   122 #endif

   123 

   124 // End of File