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1 /* |
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2 * Copyright (c) 2004-2006 Nokia Corporation and/or its subsidiary(-ies). |
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3 * All rights reserved. |
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4 * This component and the accompanying materials are made available |
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5 * under the terms of "Eclipse Public License v1.0" |
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6 * which accompanies this distribution, and is available |
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7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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8 * |
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9 * Initial Contributors: |
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10 * Nokia Corporation - initial contribution. |
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11 * |
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12 * Contributors: |
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13 * |
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14 * Description: Lock manager for locked remote files |
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15 * |
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16 */ |
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17 |
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18 |
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19 #ifndef C_RSFWLOCKMANAGER_H |
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20 #define C_RSFWLOCKMANAGER_H |
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21 |
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22 #include <e32base.h> |
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23 |
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24 #include "rsfwrfesession.h" |
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25 #include "rsfwremoteaccess.h" |
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26 |
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27 class CRsfwFileEntry; |
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28 class CRsfwRfeStateMachine; |
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29 |
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30 /** lock timeout in seconds */ |
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31 const TInt KDefaultLockTimeout = 900; |
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32 |
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33 /** KDefaultLockTimeout is the lock timeout requested from the server |
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34 Our lock timer is set to value KDefaultLockTimeout / KLockRefreshAdjustment. |
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35 It must be smaller, as it is started only when we receive the reply |
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36 from the server, and when it expires we still must have time to sent the |
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37 refresh request */ |
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38 const TInt KLockRefreshAdjustment = 3; |
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39 |
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40 /** If lock refresh attempt results in an error from the protocol stack |
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41 we use timeout mechanism to try again, but with a small timeout |
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42 as we are not even sending packets to the server. */ |
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43 const TInt KMinLockRefreshAttempt = 5; |
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44 |
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45 /** |
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46 * Pending lock renewal requests |
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47 * |
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48 * @lib remotefe.exe |
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49 * @since Series 60 3.1 |
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50 */ |
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51 class TPendingLockRefreshContext |
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52 { |
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53 public: |
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54 // Lock refresh request transaction Id |
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55 TUint iId; |
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56 // Pointer to the file entry waiting for this refresh |
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57 CRsfwFileEntry* iFileEntry; |
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58 }; |
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59 |
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60 class CRsfwLockManager: public CBase, public MRsfwRemoteAccessResponseHandler |
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61 { |
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62 public: |
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63 static CRsfwLockManager* NewL(CRsfwRemoteAccess* aRemoteAccess); |
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64 static CRsfwLockManager* NewLC(CRsfwRemoteAccess* aRemoteAccess); |
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65 ~CRsfwLockManager(); |
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66 |
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67 void HandleRemoteAccessResponse(TUint aId, TInt aStatus); |
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68 void ObtainLockL(CRsfwFileEntry* |
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69 aFileEntry, |
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70 TUint aLockFlags, |
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71 TDesC8*& aLockToken, |
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72 CRsfwRfeStateMachine* aOperation); |
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73 void ReleaseLockL(CRsfwFileEntry* aFileEntry, CRsfwRfeStateMachine* aOperation); |
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74 void RefreshLockL(CRsfwFileEntry* aFileEntry); |
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75 TInt LockedCount(); |
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76 void AddLockedEntryL(CRsfwFileEntry* aEntry); |
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77 void RemoveLockedEntry(CRsfwFileEntry* aEntry); |
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78 void PopulateExternalLockTokenCacheL(CRsfwFileEntry* aRoot); |
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79 |
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80 private: |
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81 void ConstructL(CRsfwRemoteAccess*) ; |
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82 |
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83 private: |
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84 CRsfwRemoteAccess* iRemoteAccess; // remote file transport module |
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85 RArray<TPendingLockRefreshContext> iLockRefreshContexts; |
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86 RPointerArray<CRsfwFileEntry> iLockedEntries; |
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87 }; |
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88 |
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89 #endif // LOCKMANAGER_H |
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90 |
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91 // End of File |