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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 |
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19 #include "servermonitor.h" |
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20 |
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21 _LIT(KStar , "*"); |
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22 _LIT(KExtension, ".exe"); |
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23 _LIT(KSemaphore, "Semaphore"); |
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24 |
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25 // ======== MEMBER FUNCTIONS ======== |
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26 // --------------------------------------------------------------------------- |
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27 // Constructor. |
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28 // --------------------------------------------------------------------------- |
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29 // |
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30 CServerMonitor* CServerMonitor::NewL( TDesC& aServerName , TUid aServerUid ) |
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31 { |
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32 CServerMonitor* self = new ( ELeave ) CServerMonitor(); |
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33 CleanupStack::PushL( self ); |
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34 self->ConstructL( aServerName , aServerUid ); |
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35 CleanupStack::Pop( self ); |
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36 |
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37 return self; |
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38 } |
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39 |
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40 // --------------------------------------------------------------------------- |
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41 // C++ constructor. |
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42 // --------------------------------------------------------------------------- |
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43 // |
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44 CServerMonitor::CServerMonitor() : |
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45 CActive( CActive::EPriorityStandard ), iState(EIdle) |
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46 { |
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47 // Add to active scheduler. |
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48 CActiveScheduler::Add( this ); |
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49 } |
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50 |
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51 // --------------------------------------------------------------------------- |
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52 // 2nd phase constructor. |
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53 // --------------------------------------------------------------------------- |
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54 // |
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55 void CServerMonitor::ConstructL( TDesC& aServerName , TUid aServerUid ) |
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56 { |
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57 |
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58 TFullName name; |
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59 //Update the member variables |
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60 iServerName = HBufC::NewL( aServerName.Length() ); |
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61 TPtr servernameptr = iServerName->Des(); |
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62 servernameptr.Copy( aServerName ); |
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63 |
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64 iServerUid.iUid = aServerUid.iUid; |
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65 // find Harvester Server |
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66 // Append * to the server name for the findprocess |
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67 HBufC* servername = HBufC::NewL( iServerName->Length() + 1 ); |
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68 TPtr nameptr = servername->Des(); |
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69 nameptr.Copy( aServerName ); |
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70 nameptr.Append( KStar ); |
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71 |
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72 TFindProcess findProcess( *servername ); |
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73 if ( findProcess.Next(name) == KErrNone ) |
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74 { |
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75 User::LeaveIfError( iProcess.Open(name) ); |
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76 iState = ERunning; |
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77 // logon to get termination signal |
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78 iProcess.Logon(iStatus); |
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79 SetActive(); |
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80 } |
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81 else |
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82 { |
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83 // start new Harvester |
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84 StartL(); |
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85 } |
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86 |
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87 delete servername; |
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88 |
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89 } |
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90 |
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91 void CServerMonitor::StartL() |
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92 { |
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93 |
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94 // Double check that harvester server is not already running |
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95 TFullName name; |
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96 TInt res( KErrNone ); |
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97 // Append * to the server name for the findprocess |
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98 HBufC* servername = HBufC::NewL( iServerName->Length() + 1 ); |
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99 TPtr servernameptr = servername->Des(); |
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100 servernameptr.Copy( *iServerName ); |
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101 servernameptr.Append( KStar ); |
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102 // find really Harvester Server, using TFindServer to avoid logon a dead process |
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103 TFindServer findServer( *servername ); |
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104 |
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105 if ( findServer.Next(name) == KErrNone ) |
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106 { |
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107 TFindProcess findProcess( *servername ); |
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108 if ( findProcess.Next(name) == KErrNone ) |
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109 { |
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110 iProcess.Close(); |
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111 res = iProcess.Open(name); |
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112 if ( res != KErrNone ) |
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113 { |
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114 delete servername; |
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115 return; |
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116 } |
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117 iState = EWaitingRendezvous; |
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118 SetActive(); |
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119 delete servername; |
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120 return; |
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121 } |
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122 } |
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123 |
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124 // close the panic process |
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125 TFindProcess findProcess( *servername ); |
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126 if ( findProcess.Next(name) == KErrNone ) |
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127 { |
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128 iProcess.Close(); |
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129 } |
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130 delete servername; |
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131 servername = NULL; |
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132 // Create the server process |
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133 StartServerProcessL(); |
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134 } |
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135 |
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136 // --------------------------------------------------------------------------- |
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137 // Destructor |
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138 // --------------------------------------------------------------------------- |
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139 // |
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140 CServerMonitor::~CServerMonitor() |
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141 { |
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142 delete iServerName; |
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143 Cancel(); |
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144 } |
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145 |
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146 // --------------------------------------------------------------------------- |
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147 // Active object's request handling. |
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148 // --------------------------------------------------------------------------- |
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149 // |
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150 void CServerMonitor::RunL() |
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151 { |
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152 switch (iState) |
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153 { |
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154 case EIdle: |
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155 { |
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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 iState = ERunning; |
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162 // logon to get termination signal |
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163 TRAPD(err,iProcess.Logon(iStatus)); |
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164 if ( err == KErrNone ) |
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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 // server died unexpectedly, start it |
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172 StartL(); |
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173 break; |
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174 } |
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175 default: |
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176 break; |
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177 |
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178 } |
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179 |
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180 } |
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181 |
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182 // --------------------------------------------------------------------------- |
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183 // Active object's request error handling. |
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184 // --------------------------------------------------------------------------- |
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185 // |
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186 TInt CServerMonitor::RunError( TInt /*aError*/ ) |
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187 { |
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188 return KErrNone; |
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189 } |
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190 |
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191 // --------------------------------------------------------------------------- |
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192 // Cancel the request. |
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193 // --------------------------------------------------------------------------- |
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194 // |
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195 void CServerMonitor::DoCancel() |
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196 { |
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197 iProcess.LogonCancel(iStatus); |
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198 iProcess.Close(); |
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199 } |
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200 |
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201 // --------------------------------------------------------------------------- |
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202 // StartServerProcess |
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203 // --------------------------------------------------------------------------- |
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204 // |
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205 void CServerMonitor::StartServerProcessL() |
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206 { |
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207 RSemaphore semaphore; |
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208 HBufC* semaphorename = HBufC::NewL( iServerName->Length() + 10 ); |
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209 TPtr semptr = semaphorename->Des(); |
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210 semptr.Copy( *iServerName ); |
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211 semptr.Append( KSemaphore ); |
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212 |
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213 TInt result = semaphore.CreateGlobal( *semaphorename, 0 ); |
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214 if (result != KErrNone) |
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215 { |
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216 delete semaphorename; |
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217 return ; |
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218 } |
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219 |
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220 TRAP(result, CreateServerProcess()); |
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221 if (result != KErrNone) |
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222 { |
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223 return ; |
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224 } |
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225 |
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226 semaphore.Wait(); |
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227 semaphore.Close(); |
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228 delete semaphorename; |
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229 return ; |
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230 } |
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231 |
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232 // --------------------------------------------------------------------------- |
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233 // CreateServerProcess |
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234 // --------------------------------------------------------------------------- |
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235 // |
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236 void CServerMonitor::CreateServerProcess() |
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237 { |
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238 TInt result; |
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239 |
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240 const TUidType serverUid( KNullUid, KNullUid, iServerUid); |
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241 |
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242 HBufC* servernameext = HBufC::NewL( iServerName->Length() + 4 ); |
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243 TPtr ptr = servernameext->Des(); |
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244 ptr.Copy( *iServerName ); |
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245 ptr.Append( KExtension ); |
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246 //result = iProcess.Create( *iServerName, KNullDesC, serverUid); |
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247 result = iProcess.Create( *iServerName, KNullDesC); |
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248 if (result != KErrNone) |
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249 { |
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250 delete servernameext; |
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251 return ; |
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252 } |
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253 |
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254 |
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255 // start process and wait until it is constructed |
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256 iProcess.Rendezvous(iStatus); |
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257 |
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258 if( iStatus != KRequestPending ) |
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259 { |
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260 iProcess.Kill( 0 ); // abort startup |
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261 } |
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262 else |
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263 { |
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264 iProcess.Resume(); // logon OK - start the server |
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265 iState = EWaitingRendezvous; |
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266 SetActive(); |
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267 |
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268 } |
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269 delete servernameext; |
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270 return ; |
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271 } |
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272 |
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273 // --------------------------------------------------------------------------- |
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274 // CreateServerProcess |
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275 // --------------------------------------------------------------------------- |
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276 // |
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277 void CServerMonitor::ShutdownServer() |
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278 { |
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279 HBufC* servername = HBufC16::NewLC( iServerName->Length() + 5 ); |
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280 TPtr servernameptr = servername->Des(); |
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281 servernameptr.Copy( *iServerName ); |
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282 servernameptr.Append( KExtension ); |
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283 servernameptr.Append( KStar ); |
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284 TFindProcess processFinder( *servername ); |
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285 TFullName result; |
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286 RProcess processHandle; |
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287 while ( processFinder.Next(result) == KErrNone) |
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288 { |
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289 User::LeaveIfError(processHandle.Open ( processFinder, EOwnerThread)); |
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290 processHandle.Kill(KErrNone); |
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291 processHandle.Close(); |
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292 } |
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293 CleanupStack::PopAndDestroy( servername ); |
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294 } |