author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Tue, 02 Feb 2010 01:04:58 +0200 | |
changeset 0 | 1bce908db942 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2006-2008 Nokia Corporation and/or its subsidiary(-ies). |
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* All rights reserved. |
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* This component and the accompanying materials are made available |
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* under the terms of "Eclipse Public License v1.0" |
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* which accompanies this distribution, and is available |
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* at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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* |
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* Initial Contributors: |
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* Nokia Corporation - initial contribution. |
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* |
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* Contributors: |
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* |
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* Description: |
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* |
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*/ |
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#include "mcctimermanager.h" |
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#include "mcccontrollerlogs.h" |
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// Granularity for timer entry array iEntries |
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const TInt KArrayGranularity( 8 ); |
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// 30min is the longest time we wait using RTimer::After() and millisecond |
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// precision (absolute max would be ~35min). Anything longer goes for |
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// RTimer::At() and one second precision. |
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const TInt KMaxSeconds( 30 * 60 ); |
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// One second as microseconds |
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const TInt KOneSecondAsMicros( 1000000 ); |
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// Minimum time interval for waiting with system timers (8 ms) |
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// (max +-50% error with smallest delays (timer resolution in hw = ~15ms) |
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const TInt KMinMicroseconds( 8000 ); |
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// ----------------------------------------------------------------------------- |
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// CMccTimerManager::NewL |
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// ----------------------------------------------------------------------------- |
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// |
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CMccTimerManager* CMccTimerManager::NewL() |
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{ |
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CMccTimerManager* self = CMccTimerManager::NewLC(); |
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CleanupStack::Pop( self ); |
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return self; |
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} |
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// ----------------------------------------------------------------------------- |
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// CMccTimerManager::NewLC |
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// ----------------------------------------------------------------------------- |
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// |
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CMccTimerManager* CMccTimerManager::NewLC() |
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{ |
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CMccTimerManager* self = new( ELeave ) CMccTimerManager; |
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CleanupStack::PushL( self ); |
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self->ConstructL(); |
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return self; |
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} |
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// ----------------------------------------------------------------------------- |
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// CMccTimerManager::~CMccTimerManager |
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// ----------------------------------------------------------------------------- |
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// |
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CMccTimerManager::~CMccTimerManager() |
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{ |
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Cancel(); |
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iTimer.Close(); |
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iEntries.Reset(); |
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} |
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// ----------------------------------------------------------------------------- |
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// CMccTimerManager::DoCancel |
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// ----------------------------------------------------------------------------- |
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// |
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void CMccTimerManager::DoCancel() |
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{ |
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iTimer.Cancel(); |
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} |
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// ----------------------------------------------------------------------------- |
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// CMccTimerManager::RunL |
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// ----------------------------------------------------------------------------- |
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// |
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void CMccTimerManager::RunL() |
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{ |
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__CONTROLLER("CMccTimerManager::RunL, Entry") |
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if ( iEntries.Count() > 0 ) |
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{ |
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// The first entry is the active one (which has expired) |
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// Make a copy so that we can delete the instance from the array |
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TEntry entry = iEntries[ 0 ]; |
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iEntries.Delete( 0 ); |
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// Schedule the next timer entry for execution (if any) |
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ActivateFirstEntry(); |
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// Notify the observer, leave errors are ignored in RunError |
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entry.iObserver->TimerExpiredL( entry.iId, entry.iObserverParam ); |
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} |
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__CONTROLLER("CMccTimerManager::RunL, Exit") |
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} |
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107 |
// ----------------------------------------------------------------------------- |
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// CMccTimerManager::RunError |
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// ----------------------------------------------------------------------------- |
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110 |
// |
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TInt CMccTimerManager::RunError( TInt aError ) |
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112 |
{ |
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__CONTROLLER_INT1("CMccTimerManager::RunError, error:", aError) |
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114 |
|
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if ( aError != KErrNoMemory ) |
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116 |
{ |
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aError = KErrNone; |
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} |
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119 |
|
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return aError; |
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} |
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122 |
|
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123 |
// ----------------------------------------------------------------------------- |
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// CMccTimerManager::StartL |
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// ----------------------------------------------------------------------------- |
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126 |
// |
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TMccTimerId CMccTimerManager::StartL( MMccExpirationHandler* aObserver, |
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TUint aMilliseconds ) |
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129 |
{ |
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return StartL( aObserver, aMilliseconds, NULL ); |
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} |
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132 |
|
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133 |
// ----------------------------------------------------------------------------- |
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134 |
// CMccTimerManager::StartL |
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// ----------------------------------------------------------------------------- |
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136 |
// |
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TMccTimerId CMccTimerManager::StartL( MMccExpirationHandler* aObserver, |
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TUint aMilliseconds, |
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TAny* aTimerParam ) |
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140 |
{ |
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__CONTROLLER_INT1( "CMccTimerManager::StartL aMilliseconds: ", aMilliseconds ) |
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142 |
|
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// Do not accept a NULL observer |
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if( !aObserver ) |
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145 |
{ |
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User::Leave( KErrArgument ); |
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} |
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148 |
|
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// Get new unique timer id |
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TMccTimerId newTimerId = NewTimerId(); |
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151 |
|
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// Define a new entry with the new id |
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TEntry newEntry; |
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newEntry.iId = newTimerId; |
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newEntry.iObserver = aObserver; |
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newEntry.iObserverParam = aTimerParam; |
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157 |
|
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// Calculate a timestamp for the delay (aMilliseoncds from current time) |
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159 |
TInt64 microSeconds( aMilliseconds ); |
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microSeconds *= 1000; |
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newEntry.iTimeStamp.HomeTime(); |
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newEntry.iTimeStamp += TTimeIntervalMicroSeconds( microSeconds ); |
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163 |
|
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// Find an insertion point from the array |
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// Sort entries in timestamp order ("nearest" timestamp first) |
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TInt entryPos; |
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TInt count = iEntries.Count(); |
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for( entryPos = 0; entryPos < count; entryPos++ ) |
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169 |
{ |
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if( iEntries[ entryPos ].iTimeStamp > newEntry.iTimeStamp ) |
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171 |
{ |
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172 |
break; |
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173 |
} |
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174 |
} |
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175 |
|
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// Insert the new entry to the array |
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iEntries.InsertL( entryPos, newEntry ); |
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178 |
|
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// If the entry ended being the first entry, cancel any previous entries |
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// and schedule this one to the system timer instead. |
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if( entryPos == 0 ) |
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182 |
{ |
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ActivateFirstEntry(); |
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184 |
} |
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185 |
|
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__CONTROLLER("CMccTimerManager::StartL, Exit") |
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return newEntry.iId; |
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188 |
} |
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189 |
|
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190 |
// ----------------------------------------------------------------------------- |
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191 |
// CMccTimerManager::Stop |
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192 |
// ----------------------------------------------------------------------------- |
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193 |
// |
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194 |
TInt CMccTimerManager::Stop( TMccTimerId aTimerId ) |
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195 |
{ |
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__CONTROLLER("CMccTimerManager::Stop, Entry") |
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__CONTROLLER_INT1("timer", aTimerId ) |
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198 |
|
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199 |
// Find the timer entry to be stopped |
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200 |
TInt entryIndex = FindEntry( aTimerId ); |
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201 |
if( entryIndex == KErrNotFound ) |
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202 |
{ |
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203 |
__CONTROLLER("CMccTimerManager::Stop - timer not active, Exit") |
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204 |
return KErrNotFound; |
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205 |
} |
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206 |
|
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// Delete the timer entry from our array |
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208 |
iEntries.Delete( entryIndex ); |
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209 |
|
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210 |
// Cancel system timer if this entry was the active one |
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if( entryIndex == 0 ) |
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212 |
{ |
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// Schedule the next timer entry for execution (if any) |
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ActivateFirstEntry(); |
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} |
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|
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__CONTROLLER("CMccTimerManager::Stop, Exit") |
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return KErrNone; |
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} |
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220 |
|
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// ----------------------------------------------------------------------------- |
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// CMccTimerManager::IsRunning |
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// ----------------------------------------------------------------------------- |
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// |
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TBool CMccTimerManager::IsRunning( TMccTimerId aTimerId ) const |
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{ |
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227 |
|
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TInt entryIndex = FindEntry( aTimerId ); |
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if( entryIndex != KErrNotFound ) |
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{ |
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return ETrue; |
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} |
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return EFalse; |
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} |
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235 |
|
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// ----------------------------------------------------------------------------- |
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// CMccTimerManager::NewTimerId |
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// ----------------------------------------------------------------------------- |
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// |
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TMccTimerId CMccTimerManager::NewTimerId() |
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{ |
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// Note that a rolling unsigned 32bit integer id counter |
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// is not strictly unique - however, it is not possible |
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// to have a timer with id 1 and id 2^32-1 at the same time |
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// due to time and memory constraints. |
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iTimerIdCounter++; |
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if( iTimerIdCounter == KNoSuchTimer ) |
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{ |
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iTimerIdCounter++; |
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} |
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return iTimerIdCounter; |
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} |
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253 |
|
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// ----------------------------------------------------------------------------- |
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// CMccTimerManager::FindEntry |
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// ----------------------------------------------------------------------------- |
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// |
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TInt CMccTimerManager::FindEntry( TMccTimerId aTimerId ) const |
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{ |
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// Search for an entry with a matching id |
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// (entries are sorted by timestamp, not by id) |
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TInt count = iEntries.Count(); |
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for( TInt i = 0; i < count; i++ ) |
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{ |
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if( iEntries[ i ].iId == aTimerId ) |
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{ |
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return i; |
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} |
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} |
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|
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return KErrNotFound; |
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} |
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273 |
|
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// ----------------------------------------------------------------------------- |
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// CMccTimerManager::ActivateFirstEntry |
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// ----------------------------------------------------------------------------- |
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// |
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void CMccTimerManager::ActivateFirstEntry() |
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{ |
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Cancel(); |
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if( iEntries.Count() > 0 ) |
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{ |
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// Calculate required interval from current time |
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TTime now; |
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now.HomeTime(); |
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TTime timeStamp = iEntries[ 0 ].iTimeStamp; |
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TInt64 interval( timeStamp.MicroSecondsFrom( now ).Int64() ); |
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TInt64 intervalSeconds = interval / KOneSecondAsMicros; |
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289 |
|
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// Check that the interval is long enough, otherwise complete |
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// immediately |
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if( interval > KMinMicroseconds ) |
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{ |
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// If interval is greater than ~33minutes (32bits), we have to use |
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// RTimer::At() instead of RTimer::After() |
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// At(), however, uses a precision of one second as compared |
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// to 1/64th (1/10th in emulator) precision of After() |
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if( intervalSeconds < KMaxSeconds ) |
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{ |
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iTimer.After( iStatus, |
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TTimeIntervalMicroSeconds32( I64INT( interval ) ) ); |
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} |
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else |
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304 |
{ |
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iTimer.At( iStatus, iEntries[ 0 ].iTimeStamp ); |
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} |
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} |
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else |
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309 |
{ |
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// Complete immediately |
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TRequestStatus* status = &iStatus; |
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User::RequestComplete( status, KErrNone ); |
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} |
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SetActive(); |
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} |
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} |
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|
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// ----------------------------------------------------------------------------- |
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// CMccTimerManager::CMccTimerManager |
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// ----------------------------------------------------------------------------- |
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321 |
// |
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CMccTimerManager::CMccTimerManager() |
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: CActive( CActive::EPriorityStandard ), |
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iEntries( KArrayGranularity ), |
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iTimerIdCounter( KNoSuchTimer ) |
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{ |
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CActiveScheduler::Add( this ); |
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} |
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|
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// ----------------------------------------------------------------------------- |
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// CMccTimerManager::ConstructL |
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// ----------------------------------------------------------------------------- |
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// |
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void CMccTimerManager::ConstructL() |
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{ |
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User::LeaveIfError( iTimer.CreateLocal() ); |
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} |
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|
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// ----------------------------------------------------------------------------- |
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// CMccTimerManager::TEntry::TEntry |
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// ----------------------------------------------------------------------------- |
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// |
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CMccTimerManager::TEntry::TEntry() |
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: iId( KNoSuchTimer ), iTimeStamp(), |
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iObserver( NULL ), iObserverParam( NULL ) |
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{ |
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} |