author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Tue, 27 Apr 2010 16:30:29 +0300 | |
branch | RCL_3 |
changeset 19 | 04becd199f91 |
permissions | -rw-r--r-- |
19
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Revision: v2.1.22
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/* |
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* Copyright (c) 2002 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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Revision: v2.1.22
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* Nokia Corporation - initial contribution. |
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Revision: v2.1.22
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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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|
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package javax.microedition.lcdui; |
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|
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/** |
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* Condition variable used to track completion of asynchronous |
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* requests to the server. |
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*/ |
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class AsyncCall |
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{ |
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private static final int KRequestPending = 0x80000000; |
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|
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/** |
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* Limit of wait in waitForRequest(). |
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* 1/25s is close to human persistance of vision, so |
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* users probably won't notice the glitch. |
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* |
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* See comment in waitForRequest(). |
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*/ |
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private static final long TIMEOUT = 40; // == 1/25 second |
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|
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private int iStatus; |
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private int iWaiting; |
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public AsyncCall() |
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{ |
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} |
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|
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public final synchronized void request() |
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{ |
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iStatus = KRequestPending; |
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} |
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|
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public final synchronized void complete(int aStatus) |
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{ |
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iStatus = aStatus; |
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|
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if (iWaiting > 0) |
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{ |
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notifyAll(); |
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} |
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} |
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|
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public final boolean isPending() |
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{ |
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return (iStatus == KRequestPending); |
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} |
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|
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public final synchronized int waitForRequest() |
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{ |
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while (isPending()) |
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{ |
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++iWaiting; |
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try |
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{ |
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wait(TIMEOUT); |
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} |
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catch (InterruptedException e) |
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{ |
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e.printStackTrace(); |
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} |
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--iWaiting; |
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} |
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return iStatus; |
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} |
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} |
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