794936 - Work - Resolve or avoid updater problems with Metro and Desktop browsers being open at the same time

Status: RESOLVED DUPLICATE of bug 794937

(Toolkit :: Application Update, defect)

Description

[Brian R. Bondy [:bbondy]]

Background: Updates are currently enabled on desktop and disabled in Metro.  Both use a different update directory as well so the Metro browser should never try to apply the update of the Desktop browser.

Problem: Several users will have both Desktop and Metro browsers open at the same time.  If the Desktop browser tries to apply an update, it will get a write error that the firefox.exe file is already in use (sharing violation error code 32).

Possible solutions:
- In updater code we can detect if the Metro process is suspended, and if so kill it.  Windows 8 makes no guarantee that Metro processes that are suspended will remain alive anyway. 
- Before we apply updates, we can do an extra check to see how many firefox.exe processes are open for the current binary path.  If > 1 then we would skip launching updater.exe to do the update. We'd just start the browser instead and the user would still have an update that is staged.

Comment 1

[Brian R. Bondy [:bbondy]]

CCing rstrong for feedback, no rush.