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From "Elena Sayapina (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HARMONY-4385) [drlvm][thread] Thread isn't resumed if call Thread.suspend() more than ones before Thread.resume()
Date Mon, 09 Jul 2007 13:42:04 GMT

    [ https://issues.apache.org/jira/browse/HARMONY-4385?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12511120
] 

Elena Sayapina commented on HARMONY-4385:
-----------------------------------------

Yes, Weldon, 
If the number of suspend() calls is equal to the number of resume() calls then the test passes.

> [drlvm][thread] Thread isn't resumed if call Thread.suspend() more than ones before Thread.resume()

> ----------------------------------------------------------------------------------------------------
>
>                 Key: HARMONY-4385
>                 URL: https://issues.apache.org/jira/browse/HARMONY-4385
>             Project: Harmony
>          Issue Type: Bug
>          Components: DRLVM
>            Reporter: Elena Sayapina
>            Priority: Minor
>
> Thread isn't resumed if call Thread.suspend() more than ones before Thread.resume(),
> If Thread.suspend() call number = Thread.resume() call number then thread is resumed.
> Please, consider the following code:
> public class suspendTest {
> 	static int iter = 0;
> 	static boolean flag = false;
> 	
> 	public static void main(String[] args) {
> 	    TestThread thread = new TestThread();
> 	    System.out.println("Start...");
> 	    try {
> 	         thread.start();
> 	         Thread.currentThread().sleep(3000);
> 	         thread.suspend();
> 	         thread.suspend();
> 	        Thread.currentThread().sleep(1000);
> 	        iter = 0;
> 	        flag = false;
> 	        thread.resume();
> 	        Thread.currentThread().sleep(3000);
> 	        thread.stop();
> 	        if (flag) System.out.println("TEST PASSED");
> 	        else System.out.println("TEST FAILED: thread wasn't resumed");
> 	    } catch (Exception e) {
> 	        System.out.println("TEST FAILED: unexpected " + e);
> 	    }
> 	}
> }
> class TestThread extends Thread {
> 	
>     public void run () {
>     	while(suspendTest.iter < Integer.MAX_VALUE) {
>     	    suspendTest.flag = true;
>     	    try {
>     	        Thread.currentThread().sleep(300);
> 	    } catch (InterruptedException e) {}
>                          suspendTest.iter++;
>                      }
>     	System.out.println("WARNING: out of cycle");
>     }
> }
> Output on Harmony-r553727:
> Apache Harmony Launcher : (c) Copyright 1991, 2006 The Apache Software Foundation or
its licensors,
> as applicable.
> java version "1.5.0"
> pre-alpha : not complete or compatible
> svn = r553727, (Jul  6 2007), Windows/ia32/msvc 1310, release build
> http://harmony.apache.org
> Start...
> TEST FAILED: thread wasn't resumed
> Output on RI:
> java version "1.5.0_11"
> Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_11-b03)
> Java HotSpot(TM) Client VM (build 1.5.0_11-b03, mixed mode)
> Start...
> TEST PASSED

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