302701 - Firefox should not restart during launch

Status: RESOLVED DUPLICATE of bug 271613

(Toolkit :: Add-ons Manager, defect)

Description

[Jesse Ruderman]

When I switch from one nightly build to another (in different directories),
Firefox restarts at least once before displaying a browser window.  While this
is mostly invisible on Windows, on Mac it causes the Dock icon to stop bouncing,
disappear, and reappear.  It also prevents the Firefox application from getting
focus as soon as it starts, at least when launched from the Dock.

Why does Firefox restart during launch?

Comment 1

[Benjamin Smedberg]

Restarts are due to verifying extensions and extension component directories.

*** This bug has been marked as a duplicate of 271613 ***

Comment 2

[jhp (no longer active)]

I know this bug will eventually be fixed by the duped-to bug, but in the
meantime, what about moving the |CreateHiddenWindow()| call down into the |if
(!upgraded && !needsRestart)| block?  On Mac, it seems that any call to the
create a window or query window/screen info kicks off some sort of 'startup'
process, which leads to the app icon being displayed in the dock, bouncing.  By
moving |CreateHiddenWindow| down into that block, the bouncing dock icon only
appears after all of the XPCOM restarts have completed.

I experimented with this briefly this past weekend, and didn't notice any side
effects.  The 'upgrade extensions' dialog came up just fine (if an upgrade was
necessary), as did the profile manager.

Comment 3

[Benjamin Smedberg]

The hidden window used to be used for the JS component loading JSContext, but
that's no longer the case. We do have a lot of code which makes assumptions
about when the hidden window is available and what can be done with it.