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Get list_objects in a custom mat report [message #1821642]

Tue, 18 February 2020 01:32

Eclipse User

Hello, I am trying to generate a HTML viewable report using the ParseHeapDump.bat file. I am able to the suspect , overview and top components report. I need to be able to browse the list_objects properties of the suspects in the same tree manner that is shown in the GUI (see image 1&2).

I tried to run it as a query like this:

query name="Dominator Tree">
		<command>dominator_tree</command>
		<command>list_objects</command>
</query>

This causes an error to be thrown which says parameter objects is required for list_objects. I have no idea how to pass this parameter, for example for java.lang or some other suspects. Please advice

Thanks!

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Re: Get list_objects in a custom mat report [message #1821832 is a reply to message #1821642]

Thu, 20 February 2020 15:19

Eclipse User

There is not a way to do this directly from the leak suspects report.

The list_objects command expects object addresses or class names or patterns or an OQL query but there isn't a way to extra that from the leak suspects report to add to a new report. To test the command line then use OpenQuery Browser > Search Queries to bring a up a command line where you can type:

list_objects 0x12345678

list_objects java.lang.*

.

If there isn't enough information in the report and it seems a general problem then in a future release we could enhance the suspect report.

I suppose you could parse the report yourself and run a new report with the extracted information. See https://wiki.eclipse.org/MemoryAnalyzer/Extending_Memory_Analyzer#Reports_in_Memory_Analyzer for how to write reports. You can pass in command line parameters as

-myparm=myvalue

which can then be read using

${myparm}

in the XML of a new report definition.

Re: Get list_objects in a custom mat report [message #1821915 is a reply to message #1821832]

Sat, 22 February 2020 16:37

Eclipse User

I have made some changes under bug 287952 which should improve a leak suspect report for the particular situation in the example below and and give a list of those objects in the biggest instance list and a better reference pattern.

https://www.eclipse.org/forums/index.php?t=getfile&id=37394

Please give the latest snapshot build a try.

Re: Get list_objects in a custom mat report [message #1821938 is a reply to message #1821915]

Mon, 24 February 2020 00:22

Eclipse User

Thank you for the response Andrew. I'll try the snapshot build and also the custom reports method to try to get it to work.

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