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From Gary Gregory <GGreg...@seagullsoftware.com>
Subject Re: svn commit: r1006099 - /commons/proper/io/trunk/src/test/java/org/apache/commons/io/FileCleaningTrackerTestCase.java
Date Sat, 09 Oct 2010 15:54:18 GMT
Check. I wonder how sun tests the jre for this...

Gary

On Oct 9, 2010, at 3:55, "sebb" <sebbaz@gmail.com> wrote:

> The intention is not to cause OOM, but to cause the JVM to flush the
> references by reducing the free memory.
> 
> On 9 October 2010 08:03, Gary Gregory <GGregory@seagullsoftware.com> wrote:
>> Random thought:
>> 
>> Instead of trying to cause an OutOfMemoryException, how about throwing this exception
ourselves from a (test) subclass of the IO class in that we are trying to break?
>> 
>> Gary
>> 
>> -----Original Message-----
>> From: niallp@apache.org [mailto:niallp@apache.org]
>> Sent: Friday, October 08, 2010 18:55
>> To: commits@commons.apache.org
>> Subject: svn commit: r1006099 - /commons/proper/io/trunk/src/test/java/org/apache/commons/io/FileCleaningTrackerTestCase.java
>> 
>> Author: niallp
>> Date: Sat Oct  9 01:55:02 2010
>> New Revision: 1006099
>> 
>> URL: http://svn.apache.org/viewvc?rev=1006099&view=rev
>> Log:
>> IO-161 Try garbage collecting before trying to fill memory
>> 
>> Modified:
>>    commons/proper/io/trunk/src/test/java/org/apache/commons/io/FileCleaningTrackerTestCase.java
>> 
>> Modified: commons/proper/io/trunk/src/test/java/org/apache/commons/io/FileCleaningTrackerTestCase.java
>> URL: http://svn.apache.org/viewvc/commons/proper/io/trunk/src/test/java/org/apache/commons/io/FileCleaningTrackerTestCase.java?rev=1006099&r1=1006098&r2=1006099&view=diff
>> ==============================================================================
>> --- commons/proper/io/trunk/src/test/java/org/apache/commons/io/FileCleaningTrackerTestCase.java
(original)
>> +++ commons/proper/io/trunk/src/test/java/org/apache/commons/io/FileCleaningTrackerTestCase.java
Sat Oct  9 01:55:02 2010
>> @@ -302,6 +302,8 @@ public class FileCleaningTrackerTestCase
>>     }
>> 
>>     private void waitUntilTrackCount() throws Exception {
>> +        System.gc();
>> +        Thread.sleep(500);
>>         int count = 0;
>>         while(theInstance.getTrackCount() != 0 && count++ < 5) {
>>             List<String> list = new ArrayList<String>();
>> @@ -312,7 +314,6 @@ public class FileCleaningTrackerTestCase
>>                 }
>>             } catch (Throwable ignored) {
>>             }
>> -            list.clear();
>>             list = null;
>>             System.gc();
>>             Thread.sleep(1000);
>> 
>> 
>> 
> 
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