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1 // Copyright (c) 2008-2009 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 // Name : timerhandler.cpp |
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15 // Part of : librt-timer specific cpp file |
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16 // This is a project specific source file for building the |
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17 // timer related functions as part of librt library. |
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18 // |
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19 // |
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20 |
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21 |
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22 #include "sysif.h" |
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23 #include "timerhandler.h" |
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24 #include "timerclient.h" |
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25 #include "timerserver.h" |
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26 #include "timermessage.h" |
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27 #include "timer.h" |
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28 #include <pthread.h> |
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29 |
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30 #ifdef __WINSCW__ |
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31 #include <pls.h> // For emulator WSD API |
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32 const TUid KLibrtUid3 = {0x2001E553}; |
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33 #elif defined __X86GCC__ |
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34 CTimerReqHandler gTimerHandler; |
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35 #endif |
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36 |
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37 |
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38 CTimerReqHandler* getTimerHandler() |
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39 { |
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40 #ifdef __WINSCW__ |
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41 // Access the PLS of this process |
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42 CTimerReqHandler* lTimerHandlerPtr = Pls<CTimerReqHandler>(KLibrtUid3); |
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43 return lTimerHandlerPtr; |
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44 #elif defined __X86GCC__ |
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45 return &gTimerHandler; |
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46 #else |
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47 static CTimerReqHandler sgTimerHandler; |
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48 return &sgTimerHandler; |
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49 #endif |
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50 } |
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51 |
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52 |
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53 CTimerReqHandler::CTimerReqHandler() : iTimers(CTimerReqHandler::KTimersGran) |
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54 { |
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55 iTimersLock.CreateLocal(); |
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56 iServConnectLock.CreateLocal(); |
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57 iTimerSemaphore.CreateLocal(0); |
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58 } |
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59 |
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60 |
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61 CTimerReqHandler::~CTimerReqHandler() |
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62 { |
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63 iTimersLock.Close(); |
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64 iTimers.ResetAndDestroy(); |
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65 iTimerSemaphore.Close(); |
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66 iServ.Close(); |
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67 iServConnectLock.Close(); |
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68 } |
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69 |
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70 //method to create a timer |
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71 TInt CTimerReqHandler::CreateTimer(TInt& aTimerId, struct sigevent *aSig) |
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72 { |
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73 TInt lRet = KErrNone; |
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74 if(iTimers.Count() >= MAXTIMERLIMIT) |
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75 { |
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76 lRet = KErrWouldBlock; |
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77 } |
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78 |
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79 if(lRet == KErrNone) |
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80 { |
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81 if(aSig != NULL) |
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82 { |
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83 switch(aSig->sigev_notify) |
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84 { |
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85 case SIGEV_SIGNAL: |
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86 #if (!defined SYMBIAN_OE_POSIX_SIGNALS || !defined SYMBIAN_OE_LIBRT) |
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87 { |
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88 aTimerId = -1; |
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89 lRet = KErrNotSupported; |
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90 break; |
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91 } |
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92 #else |
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93 |
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94 if(aSig->sigev_signo < 1 || aSig->sigev_signo > SIGRTMAX) |
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95 { |
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96 aTimerId = -1; |
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97 lRet = KErrArgument; |
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98 } |
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99 #endif |
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100 |
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101 case SIGEV_NONE: |
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102 case SIGEV_THREAD: |
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103 break; |
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104 default: |
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105 aTimerId = -1; |
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106 lRet = KErrArgument; |
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107 break; |
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108 } |
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109 } |
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110 |
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111 if(lRet == KErrNone) |
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112 { |
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113 RHeap* oldHeap = User::SwitchHeap(Backend()->Heap()); |
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114 CRtTimer *lTimer = CRtTimer::New(aSig); |
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115 if(NULL == lTimer) |
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116 { |
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117 aTimerId = -1; |
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118 lRet = KErrNoMemory; |
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119 User::SwitchHeap(oldHeap); |
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120 } |
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121 else |
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122 { |
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123 aTimerId = lTimer->iTimerId; |
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124 iTimersLock.Wait(); |
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125 TRAP(lRet, iTimers.AppendL(lTimer)); |
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126 User::SwitchHeap(oldHeap); |
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127 iTimersLock.Signal(); |
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128 } |
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129 } |
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130 } |
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131 |
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132 return lRet; |
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133 } |
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134 |
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135 //method to delete a timer |
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136 TInt CTimerReqHandler::RemoveTimer(const TInt& aTimerId) |
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137 { |
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138 if(FindTimer(aTimerId)== NULL) |
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139 { |
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140 return KErrArgument; |
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141 } |
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142 TInt lRet = Connect(); |
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143 if(lRet == KErrNone) |
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144 { |
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145 session.OnDemandConnect(iServer); |
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146 lRet = session.DeleteTimer(aTimerId); |
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147 } |
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148 return lRet; |
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149 } |
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150 |
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151 //method to set a new timeout value for a timer |
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152 TInt CTimerReqHandler::SetTime(const TInt& aTimerId, TInt aFlag, const struct itimerspec *aIpTime, |
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153 struct itimerspec *aOpTime) |
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154 { |
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155 TInt lRet = Connect(); |
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156 if(lRet == KErrNone) |
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157 { |
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158 CRtTimer* lTimer = FindTimer(aTimerId); |
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159 if(lTimer != NULL) |
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160 lRet = lTimer->SetTime(aFlag, aIpTime, aOpTime); |
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161 else |
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162 lRet = KErrArgument; |
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163 } |
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164 |
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165 return lRet; |
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166 } |
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167 |
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168 //method to makesure that the timer server is started only once on demand. |
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169 TInt CTimerReqHandler::Connect() |
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170 { |
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171 TInt lRet = KErrNone; |
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172 |
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173 iServConnectLock.Wait(); |
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174 if(!iIsServStarted) |
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175 { |
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176 lRet = StartTimerServer(); |
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177 if(lRet == KErrNone) |
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178 iIsServStarted = ETrue; |
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179 } |
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180 iServConnectLock.Signal(); |
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181 return lRet; |
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182 } |
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183 |
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184 //start up function for the timer server. |
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185 static TInt sTimerServer(TAny*) |
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186 { |
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187 RHeap *oldHeap = User::SwitchHeap(Backend()->Heap()); |
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188 CTrapCleanup* cleanup = CTrapCleanup::New(); |
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189 TRAPD(ret, CTimerServer::NewTimerServerL()); |
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190 delete cleanup; |
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191 User::SwitchHeap(oldHeap); |
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192 return ret; |
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193 } |
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194 |
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195 //method to start the timer server |
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196 TInt CTimerReqHandler::StartTimerServer() |
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197 { |
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198 TRequestStatus status; |
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199 TInt lRet = iServ.Create(KNullDesC, sTimerServer, |
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200 KDefaultStackSize, NULL, (TAny*)NULL); |
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201 if(lRet == KErrNone) |
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202 { |
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203 iServ.SetPriority(EPriorityAbsoluteHigh);// match the signal server priority. |
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204 iServ.Rendezvous(status); |
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205 iServ.Resume(); //get this ready |
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206 User::WaitForRequest(status); |
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207 } |
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208 return lRet; |
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209 } |
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210 |
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211 //method to get the "time to expiration" of a timer |
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212 TInt CTimerReqHandler::Time(const TInt& aTimerId, struct itimerspec *aTime) |
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213 { |
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214 CRtTimer* lTimer = FindTimer(aTimerId); |
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215 if(lTimer == NULL) |
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216 return KErrArgument; |
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217 return lTimer->Time(aTime); |
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218 } |
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219 |
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220 //method to get the overruns for a timer |
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221 TInt CTimerReqHandler::OverrunCount(const TInt& aTimerId, TInt& aOverrunCount) |
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222 { |
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223 CRtTimer* lTimer = FindTimer(aTimerId); |
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224 if(lTimer == NULL) |
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225 return KErrArgument; |
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226 return lTimer->OverrunCount(aOverrunCount); |
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227 } |
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228 |
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229 //find the timer with the given timer id |
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230 CRtTimer* CTimerReqHandler::FindTimer(const TInt& aTimerId) |
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231 { |
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232 CRtTimer* lRtTimerP = NULL; |
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233 iTimersLock.Wait(); |
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234 TInt lTimerCount = iTimers.Count(); |
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235 for(TInt lIdx =0; lIdx < lTimerCount; lIdx++) |
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236 { |
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237 if(iTimers[lIdx]->iTimerId == aTimerId) |
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238 { |
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239 lRtTimerP = (iTimers[lIdx]); |
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240 break; |
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241 } |
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242 } |
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243 iTimersLock.Signal(); |
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244 return lRtTimerP; |
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245 } |
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246 |