From: Motohiro KOSAKI <redmine@...>
Date: 2010-06-21T00:26:45+09:00
Subject: [ruby-core:30837] [Bug #2553] Fix pthreads slowness by eliminating unnecessary sigprocmask calls

Issue #2553 has been updated by Motohiro KOSAKI.


This seems to be introduced following commit.

commit 9fdbc41973971f4ef032d57c4e02ed0430227a0a
Author: nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date:   Sat Dec 13 00:01:28 2003 +0000

    * configure.in: check ucontext.h.

    * eval.c: use getcontext/setcontext() instead of setjmp/longjmp()
      on ia64 or with native thread enabled.  [ruby-core:01932]


    git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@5180 b2dd03c8-39d4-4d8f-98ff-823fe69b080e


but unfortunatelly, [ruby-core:01932] has alomost zero information ;)

  http://blade.nagaokaut.ac.jp/cgi-bin/scat.rb/ruby/ruby-core/1932

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