From: Anuj Dutta <dutta.anuj@...>
Date: 2014-01-03T14:09:57+00:00
Subject: [ruby-core:59526] Re: [ruby-trunk - Bug #9357] TracePoint's c_return traces return from call to 'trace'

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It doesn't cause any issues, however that doesn't seem to happen when one
traces on c_call. Here's the code:

https://eval.in/85228

Thanks.



On 3 January 2014 11:51, deivid (David Rodr=EDguez) <
deivid.rodriguez@gmail.com> wrote:

>
> Issue #9357 has been updated by deivid (David Rodr=EDguez).
>
>
> I think this is expected because tracing is enabled _inside_ the trace
> method, not after, nor before.
>
> Does that behaviour cause any trouble?
> ----------------------------------------
> Bug #9357: TracePoint's c_return traces return from call to 'trace'
> https://bugs.ruby-lang.org/issues/9357#change-44061
>
> Author: andhapp (Anuj Dutta)
> Status: Open
> Priority: Normal
> Assignee:
> Category:
> Target version:
> ruby -v: 2.1.0
> Backport: 1.9.3: UNKNOWN, 2.0.0: UNKNOWN, 2.1: UNKNOWN
>
>
> =3Dbegin
> Hello,
>
> In TracePoint, trace on 'c_call' doesn't trace the call made to 'trace'
> method, where as trace on 'c_return' does, is this expected behaviour?
>
> Here's the code I used to reproduce it:
>
> =3D=3D=3D Code (c_return)
>     class Car
>       def self.start
>         print "Started..."
>       end
>     end
>
>     TracePoint.trace(:c_return) do |tp|
>       puts "'#{tp.event}' event occurred in
> #{tp.defined_class}##{tp.method_id}"
>     end
>
>     Car.start
>
> =3D=3D=3D Env
>
> Ruby 2.1.0
>
>
> =3D=3D=3D Actual output
>
>     'c_return' event occurred in #<Class:TracePoint>#trace
>     Started...'c_return' event occurred in IO#write
>     'c_return' event occurred in Kernel#print
>
> =3D=3D=3D Expected output
>
>     Started...'c_return' event occurred in IO#write
>     'c_return' event occurred in Kernel#print
>
> =3D=3D=3D Code on eval.in
>
> Here's the link to code on eval.in:
>
> https://eval.in/85264
>
> Thanks.
>
>
> --
> http://bugs.ruby-lang.org/
>



--=20
Anuj DUTTA

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<div dir=3D"ltr">It doesn&#39;t cause any issues, however that doesn&#39;t =
seem to happen when one traces on c_call. Here&#39;s the code:<div><br></di=
v><div><a href=3D"https://eval.in/85228">https://eval.in/85228</a><br><div>=
<br>

</div><div>Thanks.</div><div><br></div></div></div><div class=3D"gmail_extr=
a"><br><br><div class=3D"gmail_quote">On 3 January 2014 11:51, deivid (Davi=
d Rodr=EDguez) <span dir=3D"ltr">&lt;<a href=3D"mailto:deivid.rodriguez@gma=
il.com" target=3D"_blank">deivid.rodriguez@gmail.com</a>&gt;</span> wrote:<=
br>

<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex"><br>
Issue #9357 has been updated by deivid (David Rodr=EDguez).<br>
<br>
<br>
I think this is expected because tracing is enabled _inside_ the trace meth=
od, not after, nor before.<br>
<br>
Does that behaviour cause any trouble?<br>
----------------------------------------<br>
Bug #9357: TracePoint&#39;s c_return traces return from call to &#39;trace&=
#39;<br>
<a href=3D"https://bugs.ruby-lang.org/issues/9357#change-44061" target=3D"_=
blank">https://bugs.ruby-lang.org/issues/9357#change-44061</a><br>
<br>
Author: andhapp (Anuj Dutta)<br>
Status: Open<br>
Priority: Normal<br>
Assignee:<br>
Category:<br>
Target version:<br>
ruby -v: 2.1.0<br>
Backport: 1.9.3: UNKNOWN, 2.0.0: UNKNOWN, 2.1: UNKNOWN<br>
<br>
<br>
=3Dbegin<br>
Hello,<br>
<br>
In TracePoint, trace on &#39;c_call&#39; doesn&#39;t trace the call made to=
 &#39;trace&#39; method, where as trace on &#39;c_return&#39; does, is this=
 expected behaviour?<br>
<br>
Here&#39;s the code I used to reproduce it:<br>
<br>
=3D=3D=3D Code (c_return)<br>
=A0 =A0 class Car<br>
=A0 =A0 =A0 def self.start<br>
=A0 =A0 =A0 =A0 print &quot;Started...&quot;<br>
=A0 =A0 =A0 end<br>
=A0 =A0 end<br>
<br>
=A0 =A0 TracePoint.trace(:c_return) do |tp|<br>
=A0 =A0 =A0 puts &quot;&#39;#{tp.event}&#39; event occurred in #{tp.defined=
_class}##{tp.method_id}&quot;<br>
=A0 =A0 end<br>
<br>
=A0 =A0 Car.start<br>
<br>
=3D=3D=3D Env<br>
<br>
Ruby 2.1.0<br>
<br>
<br>
=3D=3D=3D Actual output<br>
<br>
=A0 =A0 &#39;c_return&#39; event occurred in #&lt;Class:TracePoint&gt;#trac=
e<br>
=A0 =A0 Started...&#39;c_return&#39; event occurred in IO#write<br>
=A0 =A0 &#39;c_return&#39; event occurred in Kernel#print<br>
<br>
=3D=3D=3D Expected output<br>
<br>
=A0 =A0 Started...&#39;c_return&#39; event occurred in IO#write<br>
=A0 =A0 &#39;c_return&#39; event occurred in Kernel#print<br>
<br>
=3D=3D=3D Code on <a href=3D"http://eval.in" target=3D"_blank">eval.in</a><=
br>
<br>
Here&#39;s the link to code on <a href=3D"http://eval.in" target=3D"_blank"=
>eval.in</a>:<br>
<br>
<a href=3D"https://eval.in/85264" target=3D"_blank">https://eval.in/85264</=
a><br>
<br>
Thanks.<br>
<span class=3D"HOEnZb"><font color=3D"#888888"><br>
<br>
--<br>
<a href=3D"http://bugs.ruby-lang.org/" target=3D"_blank">http://bugs.ruby-l=
ang.org/</a><br>
</font></span></blockquote></div><br><br clear=3D"all"><div><br></div>-- <b=
r>Anuj DUTTA
</div>

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