551813 - Add option to prevent caching of components and modules

Status: RESOLVED DUPLICATE of bug 531886

(Core :: XPConnect, enhancement)

Description

[Michael Kraft [:morac]]

I'm finding that in the latest nightly trunk loads, if I make changes to a module or component file in an installed add-on, the changes are not picked up when I quit and restart Minefield.  The only way to get the module or component files to load again is to delete the XPC.mfl cache file (or compreg.dat and xpti.dat files and restart twice) any time I make a change.

I'm not sure if this is a bug or a designed change (I'm assuming the later), but it is now a major pain when trying to develop add-ons since every time I change something in a module or component, not only do I have to restart Minefield, but now I also have to delete the XPC.mfl cache file.

If this is a designed change, could a preference be added to prevent caching of component and module files?  Maybe something like nglayout.debug.disable_xpc_cache or nglayout.debug.disable_xpc_fastload?

If that's not possible could you have a preference that when set caused the XPC.mfl file to be deleted during shutdown?

Comment 1

[Boris Zbarsky [:bzbarsky]]

I thought this was the case on opt builds always....  Did we actually change something here?

Comment 2

[Michael Kraft [:morac]]

What's considered an "opt build"?   I'm fairly certain I never ran across this when testing older nightly builds (i.e. 3.7a2pre).

Comment 3

[Boris Zbarsky [:bzbarsky]]

Pretty much anything you download is an opt build.

Comment 4

[(not currently active) Ted Mielczarek]

Probably a dupe of bug 531886. bug 511761 changed the behavior here.

Comment 5

[Michael Kraft [:morac]]

Yeah it's a dupe. I looked for an existing bug, but I searched for XPC.mfl, not XPC.mfasl so I never found the other big.