1657197 - Support enabling MOZ_LOG profilermarkers mirroring at runtime

Status: RESOLVED FIXED

(Core :: XPCOM, enhancement, P3)

Description

[Markus Stange [:mstange]]

Bug 1518030 added support for a profilermarkers log module which causes all log messages to be pushed into profiler markers. For example, you can start Firefox with MOZ_LOG=profilermarkers,nsHttp:3, and capture a profile during a page load, and you'll get a profile like this: https://share.firefox.dev/30tmksw

However, profilermarkers only works in the MOZ_LOG environment variable; it cannot be enabled at runtime in about:networking#logging.

It would be useful for this to work at runtime, too.

To make this work at runtime, I think the following changes are needed:

1. A logging.config.profilermarkers pref would need to be added, and handled similarly to logging.config.add_timestamp
2. about:networking would need to be taught about this module, here and here.

Comment 1

[Paul Adenot (:padenot)]

I need this, taking.

Comment 2

[Paul Adenot (:padenot)]

Attachment: Bug 1657197 - Support enabling MOZ_LOG profilermarkers mirroring at runtime. r?mstange

Comment 3

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/c7a2d9c71436
Support enabling MOZ_LOG profilermarkers mirroring at runtime. r=mstange

Comment 4

[Sandor Molnar[:smolnar]]

https://hg.mozilla.org/mozilla-central/rev/c7a2d9c71436