1 /* |
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2 * Copyright (c) 2007-2009 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: Implement class CUsbDevConStarter |
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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 #include "cusbdevconstarter.h" |
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20 #include "debug.h" |
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21 |
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22 _LIT16( KUsbDevConPath, "z:\\sys\\bin\\usbdevcon.exe" ); |
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23 _LIT16( KUsbDevConParams, "" ); |
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24 |
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25 |
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26 // ======== MEMBER FUNCTIONS ======== |
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27 |
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28 // ---------------------------------------------------------------------------- |
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29 // NewL |
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30 // ---------------------------------------------------------------------------- |
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31 // |
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32 CUsbDevConStarter* CUsbDevConStarter::NewL() |
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33 { |
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34 LOG_FUNC |
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35 |
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36 CUsbDevConStarter* self = new ( ELeave ) CUsbDevConStarter(); |
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37 CleanupStack::PushL( self ); |
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38 self->ConstructL(); |
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39 CleanupStack::Pop( self ); |
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40 return self; |
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41 } |
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42 |
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43 // ---------------------------------------------------------------------------- |
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44 // Destructor |
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45 // ---------------------------------------------------------------------------- |
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46 // |
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47 CUsbDevConStarter::~CUsbDevConStarter() |
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48 { |
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49 LOG_FUNC |
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50 |
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51 Cancel(); |
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52 } |
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53 |
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54 // ---------------------------------------------------------------------------- |
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55 // Start usbdevcon process unless it is already running. |
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56 // ---------------------------------------------------------------------------- |
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57 // |
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58 void CUsbDevConStarter::Start() |
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59 { |
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60 LOG_FUNC |
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61 |
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62 iStarted = ETrue; |
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63 if ( EIdle == iState ) |
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64 { |
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65 TInt err = iProcess.Create( KUsbDevConPath, KUsbDevConParams ); |
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66 if ( KErrNone == err ) |
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67 { |
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68 //start process and wait until it is constructed |
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69 iProcess.Resume(); |
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70 iState = EWaitingRendezvous; |
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71 iProcess.Rendezvous( iStatus ); |
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72 SetActive(); |
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73 } |
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74 else |
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75 { |
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76 //error in starting, no restarting needed |
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77 iStarted = EFalse; |
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78 LOG1( "ERROR: RProcess::Create = %d" , err ); |
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79 } |
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80 } |
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81 |
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82 } |
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83 |
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84 |
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85 // ---------------------------------------------------------------------------- |
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86 // Logon to usbdevcon process for termination |
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87 // ---------------------------------------------------------------------------- |
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88 // |
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89 void CUsbDevConStarter::Logon() |
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90 { |
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91 LOG_FUNC |
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92 |
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93 iState = ERunning; |
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94 |
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95 //request termination notify |
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96 iProcess.Logon( iStatus ); |
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97 SetActive(); |
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98 } |
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99 |
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100 |
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101 // ---------------------------------------------------------------------------- |
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102 // StopRestarting prevents usbdevcon process restarting. |
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103 // ---------------------------------------------------------------------------- |
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104 // |
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105 void CUsbDevConStarter::StopRestarting() |
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106 { |
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107 LOG_FUNC |
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108 |
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109 iStarted = EFalse; |
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110 } |
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111 |
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112 // ---------------------------------------------------------------------------- |
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113 // RunL handles the process termination. |
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114 // The process is restarted, if Stop has not been requested and it terminated |
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115 // without error. |
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116 // ---------------------------------------------------------------------------- |
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117 // |
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118 void CUsbDevConStarter::RunL() |
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119 { |
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120 LOG_FUNC |
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121 |
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122 LOG2( "iStatus = %d, iState = %d", iStatus.Int(), iState ); |
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123 switch( iState ) |
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124 { |
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125 case EIdle: |
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126 { |
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127 break; |
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128 } |
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129 case EWaitingRendezvous: |
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130 { |
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131 Logon(); |
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132 break; |
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133 } |
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134 case ERunning: |
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135 { |
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136 iState = EIdle; |
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137 iProcess.Close(); |
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138 |
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139 //Do not restart, if terminated with error. |
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140 if( iStarted && ( iStatus == KErrNone ) ) |
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141 { |
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142 Start(); |
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143 } |
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144 break; |
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145 } |
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146 default: |
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147 LOG( "Unhandled state" ); |
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148 break; |
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149 } |
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150 |
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151 } |
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152 |
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153 // ---------------------------------------------------------------------------- |
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154 // Log error, if RunL leaves. RunL should never leave. |
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155 // ---------------------------------------------------------------------------- |
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156 // |
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157 TInt CUsbDevConStarter::RunError( TInt aError ) |
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158 { |
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159 LOG_FUNC |
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160 |
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161 LOG1( "aError = %d", aError ); |
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162 return KErrNone; |
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163 } |
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164 |
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165 // ---------------------------------------------------------------------------- |
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166 // DoCancel |
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167 // ---------------------------------------------------------------------------- |
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168 // |
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169 void CUsbDevConStarter::DoCancel() |
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170 { |
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171 LOG_FUNC |
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172 |
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173 iProcess.LogonCancel( iStatus ); |
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174 iProcess.Close(); |
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175 } |
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176 |
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177 // ---------------------------------------------------------------------------- |
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178 // Constructor |
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179 // ---------------------------------------------------------------------------- |
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180 // |
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181 CUsbDevConStarter::CUsbDevConStarter() |
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182 : CActive( EPriorityStandard ) |
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183 , iStarted( EFalse ) |
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184 , iState( EIdle ) |
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185 { |
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186 LOG_FUNC |
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187 |
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188 CActiveScheduler::Add( this ); |
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189 } |
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190 |
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191 // ---------------------------------------------------------------------------- |
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192 // ConstructL |
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193 // ---------------------------------------------------------------------------- |
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194 // |
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195 void CUsbDevConStarter::ConstructL() |
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196 { |
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197 LOG_FUNC |
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198 //empty |
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199 } |
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200 |
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201 // End of file |
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