1046011 - Support passing DMD options for mochitest

Status: NEW

(Testing :: Mochitest, defect)

Description

[Shian-Yow Wu [:swu]]

We have --dmd option to activate DMD in mochitest.  It would be nice if we can also pass other DMD options(see [1] for available DMD options).

For example, we may want to pass --sample-below=1 to get a precise report.

[1] https://wiki.mozilla.org/Performance/MemShrink/DMD

Comment 1

[Nicholas Nethercote [inactive]]

I thought it was possible somehow... froydnj should know if it is.

Comment 2

[Nathan Froyd [:froydnj]]

We don't support passing in DMD options right now.  I suppose we could modify the --dmd option to mach (and --dump-dmd-after-test for runtests.py itself) to take an optional argument for the DMD environment variable.  If that argument isn't provided, we should just pass '1', as we do currently.