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1 // Copyright (c) 2002-2009 Nokia Corporation and/or its subsidiary(-ies). |
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2 // All rights reserved. |
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3 // This component and the accompanying materials are made available |
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4 // under the terms of "Eclipse Public License v1.0" |
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5 // which accompanies this distribution, and is available |
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6 // at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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7 // |
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8 // Initial Contributors: |
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9 // Nokia Corporation - initial contribution. |
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10 // |
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11 // Contributors: |
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12 // |
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13 // Description: |
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14 // |
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15 |
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16 #ifndef __MMFSUBTHREADBASE_IMPL_H__ |
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17 #define __MMFSUBTHREADBASE_IMPL_H__ |
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18 |
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19 #include <e32base.h> |
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20 #include <e32std.h> |
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21 #include <mmf/common/mmfpaniccodes.h> |
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22 #include <mmf/common/mmfcontroller.h> |
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23 #ifdef SYMBIAN_ENABLE_SPLIT_HEADERS |
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24 #include <mmf/common/mmfipcserver.h> |
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25 #endif |
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26 |
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27 |
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28 /** |
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29 @internalTechnology |
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30 |
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31 Used to Kill the subthread either immediately or after a timeout. |
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32 Used by the subthread on startup to prevent orphaning if no sessions are created to it. |
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33 */ |
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34 class CMMFSubThreadShutdown : public CTimer |
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35 { |
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36 enum {EMMFSubThreadShutdownDelay=1000000}; // 1s |
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37 public: |
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38 static CMMFSubThreadShutdown* NewL(); |
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39 CMMFSubThreadShutdown(); |
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40 void ConstructL(); |
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41 void Start(); |
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42 void ShutdownNow(); |
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43 private: |
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44 void RunL(); |
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45 }; |
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46 |
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47 /** |
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48 @internalTechnology |
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49 |
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50 Subthread server base class. |
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51 Provides session counting and will kill the subthread immediately when the session count reaches zero. |
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52 Starts the shutdown timer on construction to prevent orphaning if no sessions are created. |
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53 */ |
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54 class CMMFSubThreadServer : public CMmfIpcServer |
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55 { |
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56 public: |
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57 virtual ~CMMFSubThreadServer(); |
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58 virtual void SessionCreated(); |
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59 virtual TInt RunError(TInt aError); |
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60 virtual void ShutdownNow(); |
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61 protected: |
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62 virtual CMmfIpcSession* NewSessionL(const TVersion& aVersion) const = 0; |
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63 CMMFSubThreadServer(TInt aPriority); |
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64 void ConstructL(); |
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65 private: |
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66 CMMFSubThreadShutdown* iShutdownTimer; |
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67 }; |
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68 |
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69 /** |
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70 @internalTechnology |
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71 |
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72 Used to hold on to an RMessage so we can complete it asynchronously to send an event to the main thread. |
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73 */ |
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74 class CMMFSubThreadEventReceiver : public CBase |
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75 { |
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76 public: |
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77 static CMMFSubThreadEventReceiver* NewL(const RMmfIpcMessage& aMessage); |
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78 ~CMMFSubThreadEventReceiver(); |
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79 void SendEvent(const TMMFEvent& aEvent); |
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80 private: |
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81 CMMFSubThreadEventReceiver(const RMmfIpcMessage& aMessage); |
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82 private: |
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83 RMmfIpcMessage iMessage; |
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84 TBool iNeedToCompleteMessage; |
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85 }; |
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86 |
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87 /** |
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88 @internalTechnology |
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89 |
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90 Subthread session base class. |
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91 Derived classes must implement the ServiceL() method. |
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92 */ |
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93 class CMMFSubThreadSession : public CMmfIpcSession, public MAsyncEventHandler |
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94 { |
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95 public: |
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96 virtual ~CMMFSubThreadSession(); |
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97 void CreateL(const CMmfIpcServer& aServer); |
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98 virtual void ServiceL(const RMmfIpcMessage& aMessage) = 0; |
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99 //from MAsyncEventHandler |
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100 TInt SendEventToClient(const TMMFEvent& aEvent); |
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101 protected: |
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102 CMMFSubThreadSession() {}; |
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103 TBool ReceiveEventsL(const RMmfIpcMessage& aMessage); |
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104 TBool CancelReceiveEvents(); |
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105 TBool ShutDown(); |
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106 protected: |
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107 CMMFSubThreadServer* iServer; |
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108 private: |
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109 CMMFSubThreadEventReceiver* iEventReceiver; |
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110 RArray<TMMFEvent> iEvents; |
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111 }; |
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112 |
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113 |
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114 |
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115 #endif |
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116 |