812190 - Figure out which events we need to wait for when restarting the B2G process

Status: RESOLVED FIXED

(Remote Protocol :: Marionette, defect)

Description

[Andrew Halberstadt [:ahal]]

We've had all kinds of timeouts when restarting the b2g process in emulators, e.g:
adb shell stop b2g
adb shell start b2g

To get around this in the short term we've had to use sleeps :( ... See:
https://hg.mozilla.org/integration/mozilla-inbound/rev/473d3748d994
http://mxr.mozilla.org/mozilla-central/source/build/mobile/b2gautomation.py#171

Instead we should figure out why this is happening and what event we need to be waiting for (checking for process existence doesn't work).

Comment 1

[Jonathan Griffin (:jgriffin)]

I'm beginning to think this is a problem with B2G on the emulator, and not a problem in which we don't wait long enough between stopping and starting b2g.

We see a similar situation on the pandas, but I haven't noticed this on an unagi/otoro.

Comment 2

[Jonathan Griffin (:jgriffin)]

This seems to be working reliably.