1887666 - [meta] Use psutil as process handler for Marionette to better support restart tests

Status: NEW

(Testing :: Marionette Client and Harness, task)

Description

[Henrik Skupin [:whimboo][⌚️UTC+1]]

To properly support restart tests for Firefox with Marionette we have to abandon the currently internal implementation of the process handler of mozprocess and replace it with psutil.

Given that only Marionette has the capability of tracking the process even after a restart of the application we want to have this feature as a drop-in replacement. This will work nicely given that mozrunner allows to specify a custom process_handler class.

On bug 1884401 we will get the first bit landed that will only cover MacOS for now because landing a feature is blocked by it. We will then follow-up with further enhancements for Linux and Windows.

Comment 1

[Henrik Skupin [:whimboo][⌚️UTC+1]]

This is actually a Marionette client / harness bug.