1 /* |
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2 * Copyright (c) 2009 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: Declaration of the class DAnalyzeToolEventHandler. |
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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 __ANALYZETOOLEVENTHANDLER_H__ |
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20 #define __ANALYZETOOLEVENTHANDLER_H__ |
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21 |
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22 // INCLUDES |
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23 #include <analyzetool/analyzetool.h> |
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24 #include "atlog.h" |
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25 #include <kernel/kernel.h> |
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26 |
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27 // CLASS DECLARATION |
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28 |
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29 /** |
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30 * Callback class for kernel events |
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31 */ |
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32 |
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33 class DAnalyzeToolEventHandler : public DKernelEventHandler |
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34 { |
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35 public: |
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36 |
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37 /** |
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38 * C++ default constructor. |
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39 */ |
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40 inline DAnalyzeToolEventHandler( TDfcQue* aDfcQ ); |
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41 |
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42 /** |
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43 * Destructor. |
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44 */ |
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45 ~DAnalyzeToolEventHandler(); |
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46 |
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47 /** |
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48 * Second stage constructor. |
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49 * @param aDevice A pointer to device where the event handler belongs. |
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50 * @param aProcessId Owner process id. |
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51 * @return TInt Returns KErrNone, if successful |
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52 otherwise one of the other system-wide error codes |
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53 */ |
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54 TInt Create( DLogicalDevice* aDevice, const TUint aProcessId ); |
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55 |
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56 /** |
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57 * Subscribes library event. |
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58 * @param aStatus The request status object for this request. |
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59 * @param aLibraryInfo The library information which |
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60 is filled by the device driver |
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61 * @return TInt Returns KErrNone, if successful |
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62 otherwise one of the other system-wide error codes |
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63 */ |
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64 void InformLibraryEvent( TRequestStatus* aStatus, |
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65 TAny* aLibraryInfo, |
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66 TThreadMessage& aMessage ); |
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67 |
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68 /** |
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69 * Cancels subscribetion of the library event. |
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70 */ |
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71 void CancelInformLibraryEvent(); |
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72 |
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73 /** |
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74 * Static function for DFC events. |
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75 * @param aPtr Pointer to DAnalyzeToolEventHandler object. |
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76 */ |
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77 static void EventDfc( TAny* aPtr ); |
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78 |
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79 private: |
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80 |
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81 /** |
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82 * Pointer to callback function called when an event occurs. |
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83 * @param aEvent Designates what event is dispatched. |
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84 * @param a1 Event-specific paramenter. |
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85 * @param a2 Event-specific paramenter. |
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86 * @param aThis A pointer to the event handler |
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87 * @return TUint Bitmask returned by callback function. |
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88 */ |
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89 static TUint EventHandler( TKernelEvent aEvent, |
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90 TAny* a1, |
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91 TAny* a2, |
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92 TAny* aThis ); |
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93 |
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94 private: |
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95 |
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96 /** |
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97 * Handles the EEventAddLibrary and EEventRemoveLibrary events |
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98 * @param aLib* A pointer to added/removed library. |
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99 * @param aThread* A pointer to thread where the libary is. |
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100 * @param aInfo* A reference class to be written to the client |
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101 */ |
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102 void HandleLibraryEvent( DLibrary* aLib, |
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103 DThread* aThread, |
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104 TLibraryEventInfo& aInfo ); |
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105 |
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106 /** |
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107 * Handles the EEventKillThread events |
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108 * @param aThread* A pointer to the thread being terminated. |
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109 * @param aInfo* A reference class |
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110 */ |
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111 void HandleKillThreadEvent( DThread* aThread, |
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112 TLibraryEventInfo& aInfo ); |
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113 |
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114 /** |
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115 * Informs client about the occured event |
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116 */ |
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117 void DoEventComplete(); |
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118 |
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119 private: |
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120 |
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121 /* Mutex for serializing access to event handler */ |
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122 DMutex* iHandlerMutex; |
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123 |
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124 /* Mutex fof serializing access to event handler variables */ |
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125 DMutex* iDataMutex; |
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126 |
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127 /* If the client is a RAM-loaded LDD (or PDD), it is possible for the DLL to |
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128 be unloaded while the handler is still in use. This would result in an |
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129 exception. To avoid this, the handler must open a reference to the |
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130 DLogicalDevice (or DPhysicalDevice) and close it in its d'tor. */ |
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131 DLogicalDevice* iDevice; |
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132 |
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133 /* Owner process ID */ |
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134 TUint iProcessId; |
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135 |
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136 /* Event array */ |
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137 RArray<TLibraryEventInfo> iEventArray; |
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138 |
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139 /* Pointer to client's TRequestStatus */ |
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140 TRequestStatus* iClientRequestStatus; |
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141 |
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142 /* Pointer to client's thread */ |
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143 DThread* iClientThread; |
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144 |
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145 /* Pointer to client's TLibraryEventInfo */ |
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146 TAny* iClientInfo; |
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147 |
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148 /* DFC for informing events to the client */ |
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149 TDfc iEventDfc; |
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150 }; |
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151 |
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152 // ---------------------------------------------------------------------------- |
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153 // DAnalyzeToolEventHandler::DAnalyzeToolEventHandler() |
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154 // C++ default constructor. |
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155 // ---------------------------------------------------------------------------- |
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156 // |
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157 inline DAnalyzeToolEventHandler::DAnalyzeToolEventHandler( TDfcQue* aDfcQ ) : |
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158 DKernelEventHandler( EventHandler, this ), |
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159 iEventDfc( EventDfc, this, 1 ) |
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160 { |
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161 LOGSTR1( "ATDD DAnalyzeToolEventHandler::DAnalyzeToolEventHandler()" ); |
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162 iEventDfc.SetDfcQ( aDfcQ ); |
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163 } |
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164 |
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165 #endif // __ANALYZETOOLEVENTHANDLER_H__ |
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166 |
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167 // End of File |
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