1 /*

     2 * Copyright (c) 2007 Nokia Corporation and/or its subsidiary(-ies). 

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description:  Helper class for waiting asynchronous operations.

    15  *

    16 */

    17 

    18 

    19 package com.nokia.tools.themeinstaller.installationmanager;

    20 

    21 /**

    22  * Helper class for waiting asynchronous operations.

    23  */

    24 public class Lock

    25     {

    26 

    27     private boolean iNotify = false;

    28 

    29     /*

    30      * Calls wait() if unLock() hasn't been called.

    31      * Causes thread to wait until unLock() is called.

    32      */

    33     synchronized public void lock()

    34         {

    35         if( !iNotify )

    36             {

    37             try

    38                 {

    39                 wait();

    40                 }

    41             catch ( InterruptedException e )

    42                 {

    43                 //ignore

    44                 }

    45             }

    46         iNotify = false;

    47         }

    48 

    49     /*

    50      * Called when asynchronous operation is ready.

    51      * Wakes up a thread that is waiting on this object's monitor.

    52      */

    53     synchronized public void unLock()

    54         {

    55         iNotify = true;

    56         notify();

    57         }

    58     }