dart, how to find memory leaks?

Question

I am trying to use the Observatory tab in dartium dev tools, to find a memory leak in my framework. I have made a test program here which should be viewable in js or dart. My goal is to find out where references are holding on to Massive objects, which are just wrappers around a List<double> with a million doubles in it. If I click New Client I get a new client view on the right, if I generate a bunch of Massive objects and refresh the observatory tools I see that double now takes up most of the app memory usage. If I then delete the Massive objects and wait 5 seconds for the frameworks remote garbage collection to run, then refresh the observatory tab, the doubles still occupy the same amount of memory even though they should have been GC'd (I click the GC button on the observatoy tab to, I assume, force the GC to run.) If I keep creating and deleting Massive objects in the app eventually the page crashes, typically after around 28 Massive objects have been created. My problem is finding out how to use the tools to find out where the Massive objects are still having references hold on to them. Is it possible to get find references to objects in the dev tools?

UPDATE:

I have fixed the memory leak in the test app I link too and describe above, therefore following the instructions above will not result in recreating the memory leak.

Answer 1

I'm currently investigating a memory leak myself. What's missing in the observatory is a way the chain from the root to the leaking object. I'm not sure if there is already an issue open for it, though. Feel free to open a new one.