403348 - DTrace js_calltime.d output omits interface methods

Status: RESOLVED INACTIVE

(Core :: JavaScript Engine, defect)

Description

[Myk Melez [:myk] [@mykmelez]]

The DTrace Toolkit 0.99 script js_calltime.d omits from its output those functions defined in nsContentPrefService that are implementations of methods defined in the nsIContentPrefService interface.

For example, I independently verified that the function named ContentPrefService_removeObserver, which implements nsIContentPrefService::removeObserver, was invoked 20 times in a recent trace, but the output of js_calltime.d doesn't mention it at all.

The output does mention two invocations of "removeObserver", but that's probably the call to nsIObserverService::removeObserver in ContentPrefService__destroy, which is being erroneously reported as a function invocation in nsContentPrefService.js because of bug 403345 (and is erroneously reported as having been invoked twice instead of once because of bug 403132).

The DTrace output does mention non-interface methods like ContentPrefService__init and ContentPrefService__selectPref.  It looks like the interface methods are the only ones missing.

Comment 1

[Robert Sayre]

This needs the the XPConnect probe I wrote, since there's a JS_Invoke call there.