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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: Monitoring application for servers restarting & IAD |
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15 * |
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16 */ |
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17 |
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18 #include "mdscommoninternal.h" |
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19 #include "watchdog.h" |
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20 |
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21 _LIT( KHarvesterServerProcess, "HarvesterServer*" ); |
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22 _LIT( KHarvesterServerExe, "harvesterserver.exe" ); |
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23 |
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24 // Print macro |
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25 #ifdef _DEBUG |
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26 #include <e32svr.h> |
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27 #define PRINT(x) RDebug::Print x |
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28 #else |
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29 #define PRINT(x) |
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30 #endif |
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31 |
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32 |
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33 // ======== MEMBER FUNCTIONS ======== |
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34 // --------------------------------------------------------------------------- |
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35 // Constructor. |
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36 // --------------------------------------------------------------------------- |
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37 // |
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38 CWatchdog* CWatchdog::NewL() |
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39 { |
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40 PRINT(_L("CWatchdog::NewL()")); |
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41 CWatchdog* self = new ( ELeave ) CWatchdog(); |
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42 CleanupStack::PushL( self ); |
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43 self->ConstructL(); |
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44 CleanupStack::Pop( self ); |
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45 |
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46 return self; |
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47 } |
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48 |
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49 // --------------------------------------------------------------------------- |
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50 // C++ constructor. |
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51 // --------------------------------------------------------------------------- |
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52 // |
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53 CWatchdog::CWatchdog() : |
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54 CActive( CActive::EPriorityLow ), iState(EIdle) |
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55 { |
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56 // Add to active scheduler. |
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57 CActiveScheduler::Add( this ); |
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58 } |
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59 |
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60 // --------------------------------------------------------------------------- |
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61 // 2nd phase constructor. |
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62 // --------------------------------------------------------------------------- |
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63 // |
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64 void CWatchdog::ConstructL() |
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65 { |
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66 PRINT(_L("CWatchdog::ConstructL()")); |
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67 |
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68 TFullName name; |
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69 |
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70 // find Harvester Server |
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71 TFindProcess findProcess( KHarvesterServerProcess ); |
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72 if ( findProcess.Next(name) == KErrNone ) |
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73 { |
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74 PRINT(_L("CWatchdog::ConstructL() - found server, start listening")); |
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75 |
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76 User::LeaveIfError( iProcess.Open(name) ); |
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77 iState = ERunning; |
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78 // logon to get termination signal |
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79 iProcess.Logon(iStatus); |
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80 SetActive(); |
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81 } |
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82 else |
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83 { |
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84 PRINT(_L("CWatchdog::ConstructL() - start Harvester server")); |
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85 // start new Harvester |
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86 Start(); |
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87 } |
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88 |
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89 PRINT(_L("CWatchdog::ConstructL() - create observer")); |
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90 iShutdownObserver = CWDShutdownObserver::NewL( *this ); |
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91 iSelfShutdownObserver = CWDSelfShutdownObserver::NewL( *this ); |
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92 |
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93 RProcess process; |
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94 process.SetPriority( EPriorityBackground ); |
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95 process.Close(); |
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96 } |
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97 |
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98 void CWatchdog::Start() |
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99 { |
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100 |
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101 PRINT(_L("CWatchdog::Start()")); |
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102 |
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103 // Create the server process |
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104 TInt res( KErrNone ); |
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105 |
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106 // KNullDesC param causes server's E32Main() to be run |
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107 res = iProcess.Create( KHarvesterServerExe, KNullDesC ); |
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108 if ( res != KErrNone ) |
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109 { |
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110 PRINT(_L("CWatchdog::ConstructL() - error in server creation")); |
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111 return; |
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112 } |
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113 |
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114 // start process and wait until it is constructed |
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115 iProcess.Rendezvous(iStatus); |
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116 |
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117 if( iStatus != KRequestPending ) |
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118 { |
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119 iProcess.Kill( 0 ); // abort startup |
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120 } |
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121 else |
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122 { |
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123 iProcess.Resume(); // logon OK - start the server |
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124 iState = EWaitingRendezvous; |
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125 SetActive(); |
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126 } |
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127 |
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128 PRINT(_L("CWatchdog::ConstructL() - Start end")); |
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129 } |
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130 |
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131 |
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132 // --------------------------------------------------------------------------- |
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133 // Destructor |
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134 // --------------------------------------------------------------------------- |
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135 // |
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136 CWatchdog::~CWatchdog() |
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137 { |
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138 delete iShutdownObserver; |
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139 delete iSelfShutdownObserver; |
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140 Cancel(); |
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141 } |
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142 |
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143 // --------------------------------------------------------------------------- |
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144 // Active object's request handling. |
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145 // --------------------------------------------------------------------------- |
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146 // |
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147 void CWatchdog::RunL() |
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148 { |
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149 PRINT(_L("CWatchdog::RunL")); |
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150 |
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151 switch (iState) |
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152 { |
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153 case EIdle: |
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154 { |
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155 PRINT(_L("CWatchdog::RunL() - EIdle")); |
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156 break; |
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157 } |
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158 |
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159 case EWaitingRendezvous: |
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160 { |
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161 PRINT(_L("CWatchdog::RunL() - EWaitingRendezvous")); |
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162 iState = ERunning; |
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163 // logon to get termination signal |
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164 iProcess.Logon(iStatus); |
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165 SetActive(); |
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166 break; |
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167 } |
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168 |
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169 case ERunning: |
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170 { |
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171 PRINT(_L("CWatchdog::RunL() - server died")); |
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172 // server died unexpectedly, start it |
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173 Start(); |
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174 break; |
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175 } |
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176 |
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177 case EShuttingDown: |
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178 { |
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179 PRINT(_L("CWatchdog::RunL() - IAD shutdown")); |
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180 // Do nothing |
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181 break; |
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182 } |
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183 |
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184 case ERestarting: |
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185 { |
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186 PRINT(_L("CWatchdog::RunL() - IAD restart")); |
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187 Start(); |
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188 break; |
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189 } |
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190 |
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191 default: |
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192 break; |
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193 |
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194 |
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195 } |
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196 |
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197 } |
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198 |
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199 // --------------------------------------------------------------------------- |
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200 // Active object's request error handling. |
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201 // --------------------------------------------------------------------------- |
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202 // |
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203 TInt CWatchdog::RunError( TInt /*aError*/ ) |
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204 { |
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205 return KErrNone; |
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206 } |
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207 |
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208 // --------------------------------------------------------------------------- |
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209 // Cancel the request. |
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210 // --------------------------------------------------------------------------- |
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211 // |
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212 void CWatchdog::DoCancel() |
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213 { |
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214 PRINT(_L("CWatchdog::DoCancel()")); |
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215 iProcess.LogonCancel(iStatus); |
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216 iProcess.Close(); |
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217 } |
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218 |
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219 |
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220 // ----------------------------------------------------------------------------- |
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221 // CWatchdog::ShutdownNotification |
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222 // ----------------------------------------------------------------------------- |
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223 // |
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224 void CWatchdog::ShutdownNotification() |
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225 { |
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226 |
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227 iState = EShuttingDown; |
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228 |
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229 PRINT((_L("CWatchdog::ShutdownNotification() IsActive() = %d"), IsActive() )); |
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230 |
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231 |
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232 } |
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233 |
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234 // ----------------------------------------------------------------------------- |
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235 // CWatchdog::ShutdownNotification |
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236 // ----------------------------------------------------------------------------- |
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237 // |
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238 void CWatchdog::RestartNotification() |
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239 { |
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240 PRINT(_L("CWatchdog::RestartNotification()")); |
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241 |
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242 if (!IsActive()) |
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243 SetActive(); |
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244 |
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245 iState = ERestarting; |
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246 TRequestStatus *status = &iStatus; |
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247 User::RequestComplete(status, KErrNone); |
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248 |
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249 } |
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250 |
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251 void CWatchdog::SelfShutdownNotification() |
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252 { |
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253 PRINT(_L("CWatchdog::SelfShutdownNotification()")); |
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254 CActiveScheduler::Stop(); |
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255 |
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256 } |
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257 |
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258 void MainL() |
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259 { |
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260 CActiveScheduler* scheduler = new (ELeave) CActiveScheduler(); |
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261 CActiveScheduler::Install( scheduler ); |
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262 CleanupStack::PushL( scheduler ); |
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263 |
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264 CWatchdog* w = CWatchdog::NewL(); |
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265 CleanupStack::PushL( w ); |
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266 CActiveScheduler::Start(); |
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267 |
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268 CleanupStack::PopAndDestroy( 2, scheduler ); |
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269 } |
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270 |
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271 TInt E32Main() |
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272 { |
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273 TInt err = KErrNoMemory; |
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274 |
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275 CTrapCleanup* cleanupStack = CTrapCleanup::New(); |
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276 if ( cleanupStack ) |
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277 { |
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278 TRAP( err, MainL() ); |
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279 } |
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280 |
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281 delete cleanupStack; |
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282 return err; |
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283 } |