author | hgs |
Fri, 06 Aug 2010 09:56:02 +0300 | |
changeset 43 | c5e73110f733 |
parent 23 | 33ae025ac1e8 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2007-2009 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: Maintains a list of process ids and matching origin* |
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*/ |
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#ifndef __PROCESSORIGINMAPPER_H__ |
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#define __PROCESSORIGINMAPPER_H__ |
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#include <e32cmn.h> |
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#include <s32file.h> |
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#include "mdeconstants.h" |
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#include "processoriginmapperinterface.h" |
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/** |
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* @var Data transfer object used for process/origin |
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* mapping table. |
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*/ |
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struct TProcessOriginPair |
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{ |
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TUid iProcessId; |
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TOrigin iOrigin; |
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}; |
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/** |
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* @var Maximum amount of items allowed in the mapping table. |
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*/ |
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const TInt KMaxMappingSize = 100; |
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/** |
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* Maintains a list of process ids and matching origin |
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* values to be set for mde objects created by a process. |
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* List is maintained in memory and in a text file. |
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* |
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* API is provided to add and remove processes in the list |
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* and to retrieve the matching origin by a process id (if any). |
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* Mappings are read written to a file on request. |
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*/ |
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class CProcessOriginMapper : public CBase, |
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public MProcessOriginMapperInterface |
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{ |
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public: |
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/** |
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* Creates and constructs a new instance of CLocationContextPlugin. |
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* Two-phase construction. |
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* |
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* @return A pointer to the created instance. |
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*/ |
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static CProcessOriginMapper* NewL(); |
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/** |
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* Destructor. |
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*/ |
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virtual ~CProcessOriginMapper(); |
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private: |
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/** |
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* Private constructor, called by NewL() only. |
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*/ |
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CProcessOriginMapper(); |
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/** |
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* Second phase construction called by NewL(). |
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*/ |
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void ConstructL(); |
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public: |
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/** |
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* Add a process to the list. |
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* @param aProcessUid Uid of the process to add. |
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* @param aOrigin Origin to which this process will mapped to. |
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*/ |
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void RegisterProcessL( const TUid& aProcessId, |
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const TOrigin& aOrigin ); |
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/** |
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* Remove a process from the list. |
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* @param aProcessId Uid of the process to remove. |
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*/ |
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void UnregisterProcessL( const TUid& aProcessId ); |
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/** |
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* Check a process from the list. |
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* @param aProcessId Uid of the process to check. |
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* @return Origin the given process is mapped to |
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* or KErrNotFound if not found. |
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*/ |
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TOrigin OriginL( const TUid& aProcessId ); |
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/** |
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* Read process id mappings from a file. |
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* This doesn't clear the list of currently registered mappings. |
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* @param aFile File name and path. |
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* @return Count of mapping pairs read. |
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*/ |
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TInt ReadFileL( const TDesC& aFile ); |
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|
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/** |
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* Read process id mappings from the default file. |
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* @return Count of mapping pairs read. |
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*/ |
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TInt ReadFileL(); |
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/** |
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* Write process id mappings to a file. |
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* @param aFile File name and path. |
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*/ |
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void WriteFileL( const TDesC& aFile ); |
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|
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/** |
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* Write process id mappings to the default file. |
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*/ |
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void WriteFileL(); |
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|
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/** |
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* Clear mapping table in memory. |
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*/ |
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void Clear(); |
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|
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/** |
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* Count of registered mappings. |
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* @return Count |
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*/ |
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TInt Count(); |
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|
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private: |
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/** |
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* Find an index by process id. |
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* @param aProcessId Process id. |
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* @return Index or KErrNotFound if not found. |
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*/ |
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TInt FindProcess( const TUid& aProcessId ); |
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|
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/** |
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* Read one process id and origin pair from file. |
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* @param aProcessUid Uid of the process to add. |
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* @param aOrigin Origin to which this process will mapped to. |
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*/ |
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void ReadProcessOriginPairL( TUid& aProcessId, TOrigin& aOrigin ); |
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/** |
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* Write one related process/origin pair to a file. |
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* @param aProcessUid Uid of the process to add. |
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* @param aOrigin Origin to which this process will mapped to. |
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*/ |
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void WriteProcessOriginPairL( TUid& aProcessId, TOrigin& aOrigin ); |
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|
23
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static TInt Compare(const TProcessOriginPair& aFirst, const TProcessOriginPair& aSecond); |
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|
0
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private: // data |
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/** |
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* @var Mapping table. It holds pairs of |
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* matching process ids and origins. |
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* Content is loaded from and saved to a file. |
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*/ |
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RArray<TProcessOriginPair> iProcessOriginMap; |
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/** |
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* File system session. |
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*/ |
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RFs iFs; |
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|
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/** |
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* File stream used for reading the import file |
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*/ |
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RFileReadStream iReadStream; |
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/** |
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* File stream used for writing the export file |
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*/ |
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RFileWriteStream iWriteStream; |
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|
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/** |
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* A buffer used for reading lines from files. |
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*/ |
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HBufC8* iLineBuffer; |
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/** |
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* Indicates read defult origin map file. |
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* No write process should occur. |
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*/ |
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TBool iDefaultFileRead; |
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}; |
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#endif |