Hi Fredrik,

Looks great!


Thanks for fixing this,
/peter

On Sep 20, 2013, at 2:35 PM, Fredrik Arvidsson <fredrik.arvids...@oracle.com> 
wrote:

> Hi
> 
> Please help me and review the changes below:
> 
> Webrev: http://cr.openjdk.java.net/~allwin/farvidss/6313383/webrev.00/
> Bug: https://bugs.openjdk.java.net/browse/JDK-6313383
> 
> This change adds support for dumping large heaps (> 4G) using jmap by 
> implementing the "JAVA PROFILE 1.0.2" file format with segmented heap dump 
> records.
> The HPROF binary format specification can be found here: 
> https://java.net/downloads/heap-snapshot/hprof-binary-format.html.
> 
> I added a simple test to verify that heaps smaller than 2G are dumped using 
> the "JAVA PROFILE 1.0.1" format. The last section in the test, aiming to test 
> the format used when dumping heaps larger than 2G, is commented out since the 
> test system didn't like that kind of heap sizes and ultimately failed (OOM 
> and sometimes timeout). The test should be reintroduced once we can reliably 
> support such tests in the test system.
> 
> Thanks 'allwin' for hosting my review :)
> 
> Cheers
> /Fredrik

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