1296875 - TraceLogger: minor refactoring

Status: RESOLVED FIXED

(Core :: JavaScript Engine, defect)

Description

[Steve Fink [:sfink] [:s:]]

I wanted to get familiar with the TraceLogger code, and founds some opportunities for minor refactoring and commenting changes.

Comment 1

[Steve Fink [:sfink] [:s:]]

Attachment: Minor TraceLogger cleanups, comments, refactoring

Note that the refcount ordering is for the case where you are self-assigning with a starting refcount of 1.

Comment 2

[Hannes Verschore [:h4writer]]

Comment on attachment 8783211 [details] [diff] [review]
Minor TraceLogger cleanups, comments, refactoring

Review of attachment 8783211 [details] [diff] [review]:
-----------------------------------------------------------------

Thanks! Much appreciated.

::: js/src/vm/Debugger.cpp
@@ -4823,5 @@
>              return false;
>  
>          uint32_t textId = TLStringToTextId(linear);
>  
> -        if (!TLTextIdIsToggable(textId)) {

Until now never noticed this was wrongly spelled!

::: js/src/vm/TraceLogging.cpp
@@ +357,5 @@
>      }
>  
>      AutoTraceLog internal(this, TraceLogger_Internal);
>  
> +    char* str = js_strdup(text);

Better indeed

@@ +1016,2 @@
>      if (hasPayload())
>          payload()->release();

Though it won't make a difference (in this code), since we don't actively remove the item when it hits 0, it is more logical like this indeed.

::: js/src/vm/TraceLoggingGraph.cpp
@@ +33,5 @@
>  using mozilla::NativeEndian;
>  
>  TraceLoggerGraphState* traceLoggerGraphState = nullptr;
>  
> +#define MAX_LOGGERS 999

Can you add comment that if this get increased the %d of AllocTraceLogFilename alse needs to get adjusted?

@@ +166,2 @@
>          return false;
> +    auto cleanupTree = MakeScopeExit([&] { fclose(treeFile); treeFile = nullptr; });

Nice usage of MakeScopeExit!

Comment 3

[Steve Fink [:sfink] [:s:]]

(In reply to Hannes Verschore [:h4writer] from comment #2)
> ::: js/src/vm/TraceLoggingGraph.cpp
> @@ +33,5 @@
> >  using mozilla::NativeEndian;
> >  
> >  TraceLoggerGraphState* traceLoggerGraphState = nullptr;
> >  
> > +#define MAX_LOGGERS 999
> 
> Can you add comment that if this get increased the %d of
> AllocTraceLogFilename alse needs to get adjusted?

Sure, though I'll have to do that in the next patch since AllocTraceLogFilename doesn't exist yet.

Comment 4

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/mozilla-inbound/rev/8b45dd84cc08
Minor TraceLogger cleanups, comments, refactoring; r=h4writer

Comment 5

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/mozilla-inbound/rev/d0afd311c614
Minor TraceLogger cleanups, comments, refactoring; r=h4writer

Comment 6

[Ryan VanderMeulen [:RyanVM]]

https://hg.mozilla.org/mozilla-central/rev/d0afd311c614