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1 /* |
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2 * Copyright (c) 2007 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: The global lock class for messaging components |
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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 |
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20 #include <centralrepository.h> // CRepository |
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21 #include "MuiuLock.h" // Own header file |
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22 |
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23 // --------------------------------------------------------------------------- |
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24 // CMuiuLock::NewL |
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25 // Runs the first and second phase constructors |
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26 // --------------------------------------------------------------------------- |
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27 // |
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28 EXPORT_C CMuiuLock* CMuiuLock::NewL( TUid aLockId ) |
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29 { |
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30 CMuiuLock* self = new (ELeave) CMuiuLock; |
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31 CleanupStack::PushL( self ); |
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32 self->ConstructL( aLockId ); |
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33 CleanupStack::Pop( self ); |
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34 return self; |
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35 } |
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36 |
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37 // --------------------------------------------------------------------------- |
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38 // CMuiuLock::~CMuiuLock |
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39 // Destructor. Releases the lock if needed. |
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40 // --------------------------------------------------------------------------- |
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41 // |
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42 CMuiuLock::~CMuiuLock() |
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43 { |
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44 if ( iLocked ) |
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45 { |
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46 Release(); |
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47 } |
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48 delete iRepository; |
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49 } |
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50 |
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51 // --------------------------------------------------------------------------- |
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52 // CMuiuLock::Reserve |
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53 // Reserves the lock for the client by opening the read/write transaction to |
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54 // the central repository |
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55 // --------------------------------------------------------------------------- |
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56 // |
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57 EXPORT_C TInt CMuiuLock::Reserve() |
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58 { |
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59 TInt status( KErrNone ); |
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60 |
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61 if ( !iLocked ) |
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62 { |
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63 status = iRepository->StartTransaction( |
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64 CRepository::EReadWriteTransaction ); |
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65 |
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66 if ( status == KErrNone ) |
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67 { |
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68 iLocked = ETrue; |
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69 } |
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70 } |
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71 else |
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72 { |
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73 status = KErrGeneral; |
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74 } |
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75 |
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76 return status; |
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77 } |
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78 |
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79 // --------------------------------------------------------------------------- |
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80 // CMuiuLock::Release |
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81 // Releases the lock by cancelling the transaction opened by Reserve() |
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82 // --------------------------------------------------------------------------- |
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83 // |
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84 EXPORT_C void CMuiuLock::Release() |
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85 { |
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86 if ( iLocked ) |
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87 { |
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88 iRepository->CancelTransaction(); |
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89 iLocked = EFalse; |
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90 } |
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91 } |
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92 |
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93 // --------------------------------------------------------------------------- |
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94 // CMuiuLock::CMuiuLock |
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95 // First phase constructor. Just initialises the data members. |
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96 // --------------------------------------------------------------------------- |
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97 // |
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98 CMuiuLock::CMuiuLock() : |
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99 iRepository ( NULL ), |
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100 iLocked ( EFalse ) |
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101 { |
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102 // none |
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103 } |
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104 |
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105 // --------------------------------------------------------------------------- |
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106 // CMuiuLock::ConstructL |
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107 // Second phase constructor. Creates the central repository handle. |
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108 // --------------------------------------------------------------------------- |
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109 // |
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110 void CMuiuLock::ConstructL( TUid aLockId ) |
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111 { |
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112 iRepository = CRepository::NewL( aLockId ); |
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113 } |