Issue #1152 has been updated by ko1 (Koichi Sasada).

Assignee changed from matz (Yukihiro Matsumoto) to ko1 (Koichi Sasada)

I take it.
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Bug #1152: profiler.rb is not concurrent-execution threadsafe
https://bugs.ruby-lang.org/issues/1152#change-28020

Author: headius (Charles Nutter)
Status: Assigned
Priority: Normal
Assignee: ko1 (Koichi Sasada)
Category: 
Target version: 
ruby -v: all versions 1.8.6 and up


=begin
 The library profiler.rb uses class variables to store data without wrapping them in mutexes. On current C Ruby, this may only rarely cause a problem, but as more and more code is allowed to run in parallel it's going to lead to issues. If I or other JRuby community members have a chance, we'll try to make it thread-safe, but I wanted to file this issue to ensure it's out there.
 
 The library is also largely unchanged in 1.9.1.
 
 See http://jira.codehaus.org/browse/JRUBY-2133 for the (admittedly sparse) JRuby issue.
=end



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