From: Charlie Savage <cfis@...>
Date: 2011-09-07T14:52:02+09:00
Subject: [ruby-core:39330] [Ruby 1.9 - Bug #5292] Access to GC::Profiler Records


Issue #5292 has been updated by Charlie Savage.


Sorry - I missed that there was already a request for this two months ago - see #4991.  It includes the 1 line patch as well as documentation.

Could it be applied?
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Bug #5292: Access to GC::Profiler Records
http://redmine.ruby-lang.org/issues/5292

Author: Charlie Savage
Status: Open
Priority: Normal
Assignee: 
Category: core
Target version: 1.9.3
ruby -v: ruby 1.9.3dev (2011-09-02 revision 33163) [i386-mswin32_100]


Could the method gc_profile_record_get be made part of the GC::Profiler class?  It returns an array of hashes of various interesting GC measurements.

I'd like ruby-prof to hook into it.  Unfortunately, only textual output is currently supported via gc_profile_result.  And parsing that output would be a pain.

To do this:

* 1 line patch to gcc.c:

rb_define_singleton_method(rb_mProfiler, "records", gc_profile_record_get, 0);

* Is is a safe change since the result is a newly created array of hashes each time.

* Its useful for performance analysis tools (like ruby-prof)

Would be great to have this in 1.9.3 if at all possible.

Thanks - Charlie



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