1185217 - Possibility to activate script tracing in Browser Toolbox

Status: UNCONFIRMED

(DevTools :: Debugger, enhancement, P5)

Description

[Jan D]

User Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:39.0) Gecko/20100101 Firefox/39.0
Build ID: 20150629114848

Steps to reproduce:

I wanted to debug Add-On JavaScript by using the Browser Toolbox. For "normal" non-browser JavaScript I can activated  the tracer by setting about:config -> devtools.debugger.tracer = true


Actual results:

The about:config -> devtools.debugger.tracer = true did not seem to affect the debugger of the browser Toolbox (no tracer button visible), nor did I find an about:config option that may enable it. 


Expected results:

Browser toolbox should have the tracer option too; either activated by the same or another about:config option.

Comment 1

[J. Ryan Stinnett [:jryans] (Use needinfo, replies may be slow)]

The tracer was removed in bug 1176981 as it is unsupported and has various unsolved issues.

Nick, is there a future plan for similar functionality?

Comment 2

[Nick Fitzgerald [:fitzgen] [⏰PST; UTC-8]]

(In reply to J. Ryan Stinnett [:jryans] (use ni?) from comment #1)
> The tracer was removed in bug 1176981 as it is unsupported and has various
> unsolved issues.
> 
> Nick, is there a future plan for similar functionality?

Using the Debugger API's onEnterFrame and Frame.onPop hooks was much too slow. If we revisit a tracing debugger in the future, we can build on top of the trace logger, which has since been exposed on the Debugger API.

Comment 3

[Jason Laster [:jlast]]

Closing as tracing is not on the roadmap.