904910 - Profiler sometimes breaks with NS_ERROR_NOT_AVAILABLE

Status: RESOLVED WORKSFORME

(DevTools :: Performance Tools (Profiler/Timeline), defect, P1)

Description

[Anton Kovalyov (:anton)]

I can't pinpoint exactly what's causing the issue but sometimes profiler breaks with server throwing following errors:

[16:08:08.597] [Exception... "Component returned failure code: 0x80040111 (NS_ERROR_NOT_AVAILABLE) [nsIProfiler.StartProfiler]"  nsresult: "0x80040111 (NS_ERROR_NOT_AVAILABLE)"  location: "JS frame :: resource://gre/modules/devtools/dbg-server.jsm -> resource://gre/modules/devtools/server/actors/profiler.js :: ProfilerActor.prototype.onStartProfiler :: line 86"  data: no]
undefined @ resource://gre/modules/devtools/dbg-server.jsm -> resource://gre/modules/devtools/server/main.js:839

[16:08:08.597] Server did not specify an actor, dropping packet: {"error":"unknownError","message":"error occurred while processing 'startProfiler': [Exception... \"Component returned failure code: 0x80040111 (NS_ERROR_NOT_AVAILABLE) [nsIProfiler.StartProfiler]\"  nsresult: \"0x80040111 (NS_ERROR_NOT_AVAILABLE)\"  location: \"JS frame :: resource://gre/modules/devtools/dbg-server.jsm -> resource://gre/modules/devtools/server/actors/profiler.js :: ProfilerActor.prototype.onStartProfiler :: line 86\"  data: no]\nundefined"} @ resource://gre/modules/devtools/dbg-client.jsm:641

Comment 1

[Anton Kovalyov (:anton)]

Benoit, have you experienced that before? It started last week.

Comment 2

[Benoit Girard (:BenWa)]

NS_ERROR_NOT_AVAILABLE is when the profiler locks itself because of private browsing. You can listen for the events profiler-locked/profiler-unlocked that are sent by the profiler.

The problem is the thumbnail service is using private browsing to take screenshots in the background and it's interferring with how we detect that there's a private window open.

Comment 4

[Anton Kovalyov (:anton)]

Couldn't reproduce this in a while and sine the blocker bug has been fixed I think this is no longer an issue.