1016445 - nsAppShellService created (hidden?) windows fail to report allocated memory that other windows report

Status: NEW

(Core :: General, defect)

Description

[Jonathan Watt [:jwatt]]

If I add reporting of PresShell's nsFrameSelection member (mSelection) then the DMD stacks showing the nsFrameSelection ctor being called from PresShell::Init move from the Unreported to the Once-reported section of DMD's reports...except if the PresShell is created under nsAppShellService::JustCreateTopWindow.

Perhaps nsWindowMemoryReporter::CollectReports needs to do something special for these windows?

Comment 1

[Jonathan Watt [:jwatt]]

Attachment: the four pre-patch DMD stacks

Comment 2

[Jonathan Watt [:jwatt]]

Attachment: the four post-patch DMD stacks

Comment 3

[Jonathan Watt [:jwatt]]

(In reply to Jonathan Watt [:jwatt] from comment #2)
> Created attachment 8429377 [details]
> the four post-patch DMD stacks

Hmm, the fourth stack isn't relevant actually. Not sure why we went from four to three relevant stacks. I'll redo the measurements.

Comment 4

[Jonathan Watt [:jwatt]]

I now can't reproduce this, but I'm pretty sure I'm doing the same thing as before. Maybe there's some non-determinism somewhere?