author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Mon, 18 Jan 2010 20:34:07 +0200 | |
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child 1 | acef663c1218 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2006-2007 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: Processor object for running harvester requests |
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* |
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*/ |
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|
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#include "harvesterrequestqueue.h" |
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#include "harvesterrequestactive.h" |
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#include "harvesterlog.h" |
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// maximum number of active client requests ( 18 burst images + 1 video ) |
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const TUint KMaxClientRequests = 19; |
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// ======== MEMBER FUNCTIONS ======== |
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// --------------------------------------------------------------------------- |
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// CHarvesterRequestQueue::NewL() |
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// Two-phased constructor. |
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// --------------------------------------------------------------------------- |
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// |
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CHarvesterRequestQueue* CHarvesterRequestQueue::NewL() |
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{ |
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CHarvesterRequestQueue* self = new( ELeave )CHarvesterRequestQueue(); |
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CleanupStack::PushL( self ); |
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self->ConstructL(); |
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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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// CHarvesterRequestQueue::CHarvesterRequestQueue() |
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// C++ default constructor can NOT contain any code, that might leave. |
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// --------------------------------------------------------------------------- |
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// |
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CHarvesterRequestQueue::CHarvesterRequestQueue(): CActive( CActive::EPriorityStandard ) |
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{ |
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CActiveScheduler::Add( this ); |
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} |
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// --------------------------------------------------------------------------- |
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// CHarvesterRequestQueue::ConstructL() |
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// Symbian 2nd phase constructor can leave. |
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// --------------------------------------------------------------------------- |
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// |
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void CHarvesterRequestQueue::ConstructL() |
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{ |
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iActiveRequests = 0; |
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iShutdown = EFalse; |
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} |
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// --------------------------------------------------------------------------- |
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// CHarvesterRequestQueue::~CHarvesterRequestQueue() |
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// Destructor. |
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// --------------------------------------------------------------------------- |
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// |
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CHarvesterRequestQueue::~CHarvesterRequestQueue() |
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{ |
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WRITELOG( "CHarvesterRequestQueue::~CHarvesterRequestQueue()"); |
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Cancel(); |
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iRequests.ResetAndDestroy(); |
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WRITELOG( "CHarvesterRequestQueue::~CHarvesterRequestQueue() - All requests deleted"); |
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} |
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// --------------------------------------------------------------------------- |
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// CHarvesterRequestQueue::Process() |
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// Activates next request if possible. |
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// --------------------------------------------------------------------------- |
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// |
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void CHarvesterRequestQueue::Process() |
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{ |
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WRITELOG( "CHarvesterRequestQueue::Process()"); |
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if ( !IsActive() && !iShutdown && (iActiveRequests < KMaxClientRequests) ) |
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{ |
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SetActive(); |
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TRequestStatus* statusPtr = &iStatus; |
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User::RequestComplete( statusPtr, KErrNone ); |
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} |
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} |
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// --------------------------------------------------------------------------- |
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// CHarvesterRequestQueue::AddRequestL() |
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// Adds new request to the queue. |
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// --------------------------------------------------------------------------- |
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// |
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void CHarvesterRequestQueue::AddRequestL( CHarvesterRequestActive* aRequest ) |
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{ |
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WRITELOG( "CHarvesterRequestQueue::AddRequestL()"); |
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108 |
|
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iRequests.AppendL( aRequest ); |
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} |
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111 |
|
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112 |
|
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// --------------------------------------------------------------------------- |
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// CHarvesterRequestQueue::RunL() |
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// --------------------------------------------------------------------------- |
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// |
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void CHarvesterRequestQueue::RunL() |
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118 |
{ |
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WRITELOG2( "CHarvesterRequestQueue::RunL() begin - requests: %d, active requests: %d", |
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iRequests.Count(), iActiveRequests ); |
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121 |
|
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CHarvesterRequestActive* selectedRequest = NULL; |
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123 |
|
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for ( TInt i = 0; i < iRequests.Count(); i++ ) |
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125 |
{ |
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CHarvesterRequestActive* request = iRequests[i]; |
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127 |
|
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// remove completed tasks |
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if ( request->RequestCompleted() && !request->IsActive() ) |
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130 |
{ |
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// delete completed task |
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delete request; |
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iRequests.Remove( i ); |
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134 |
|
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// correct the index so that no tasks are skipped |
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i--; |
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if(i <= -1) |
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138 |
{ |
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i = -1; |
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} |
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141 |
|
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WRITELOG( "CHarvesterRequestQueue::RunL() - removing completed request"); |
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143 |
} |
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// select priorised task |
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else |
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146 |
{ |
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// not yet activated |
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if( !request->IsActive() ) |
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149 |
{ |
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selectedRequest = request; |
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} |
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152 |
} |
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153 |
} |
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154 |
|
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// activate selected |
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if ( selectedRequest ) |
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157 |
{ |
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iActiveRequests++; |
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selectedRequest->Start(); |
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} |
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161 |
|
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WRITELOG2( "CHarvesterRequestQueue::RunL() end - requests: %d, active requests: %d", |
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iRequests.Count(), iActiveRequests ); |
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164 |
|
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// continue processing if needed |
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if ( !iShutdown && (iActiveRequests < KMaxClientRequests) && |
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(iRequests.Count() > iActiveRequests)) |
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168 |
{ |
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SetActive(); |
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TRequestStatus* statusPtr = &iStatus; |
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User::RequestComplete( statusPtr, KErrNone ); |
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172 |
} |
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173 |
else |
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174 |
{ |
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iRequests.Compress(); |
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} |
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177 |
} |
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178 |
|
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// --------------------------------------------------------------------------- |
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// Handle any error from RunL |
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// --------------------------------------------------------------------------- |
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// |
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TInt CHarvesterRequestQueue::RunError( TInt aError ) |
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184 |
{ |
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WRITELOG1( "CHarvesterRequestQueue::RunError() - %d", aError); |
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186 |
|
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if (aError) |
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188 |
{ |
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iActiveRequests--; |
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if(iActiveRequests <= -1) |
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191 |
{ |
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iActiveRequests = 0; |
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193 |
} |
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} |
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195 |
|
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return KErrNone; |
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} |
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198 |
|
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199 |
// --------------------------------------------------------------------------- |
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// CHarvesterRequestQueue::DoCancel() |
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201 |
// --------------------------------------------------------------------------- |
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// |
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void CHarvesterRequestQueue::DoCancel() |
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{ |
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WRITELOG( "CHarvesterRequestQueue::DoCancel()"); |
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206 |
|
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for( TInt i(0); i < iRequests.Count(); i++ ) |
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208 |
{ |
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iRequests[i]->Cancel(); |
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} |
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211 |
|
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iShutdown = ETrue; |
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} |
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214 |
|
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// --------------------------------------------------------------------------- |
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// CHarvesterRequestQueue::RequestComplete() |
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// Completes the request |
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// --------------------------------------------------------------------------- |
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// |
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void CHarvesterRequestQueue::RequestComplete() |
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{ |
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WRITELOG( "CHarvesterRequestQueue::RequestComplete()"); |
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iActiveRequests--; |
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if(iActiveRequests <= -1) |
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{ |
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iActiveRequests = 0; |
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} |
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|
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WRITELOG1( "CHarvesterRequestQueue::RequestComplete() - active requests: %d", iActiveRequests ); |
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// clean completed request and possibly process next |
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if ( !IsActive() && !iShutdown ) |
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{ |
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SetActive(); |
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TRequestStatus* statusPtr = &iStatus; |
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User::RequestComplete( statusPtr, KErrNone ); |
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} |
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} |
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// --------------------------------------------------------------------------- |
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// CHarvesterRequestQueue::ForceRequests() |
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// --------------------------------------------------------------------------- |
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// |
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void CHarvesterRequestQueue::ForceRequests() |
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{ |
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WRITELOG( "CHarvesterRequestQueue::ForceRequests()"); |
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Cancel(); |
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for ( TInt i = 0; i < iRequests.Count(); i++ ) |
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{ |
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CHarvesterRequestActive* request = iRequests[i]; |
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// remove completed tasks |
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if ( request->RequestCompleted() ) |
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{ |
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// delete completed task |
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delete request; |
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iRequests.Remove( i ); |
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|
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// correct the index so that no tasks are skipped |
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i--; |
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if(i <= -1) |
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{ |
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i = -1; |
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} |
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} |
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else |
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{ |
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iRequests[i]->ForceHarvest(); |
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} |
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} |
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} |
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|
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// End of file |