From: Hidetoshi NAGAI <nagai@...>
Date: 2005-07-08T12:50:53+09:00
Subject: Re: cross-thread violation in TkCanvas when clicked

From: David Brady <ruby_talk@shinybit.com>
Subject: cross-thread violation in TkCanvas when clicked
Date: Fri, 8 Jul 2005 01:10:54 +0900
Message-ID: <42CD5404.6060203@shinybit.com>
> /usr/local/lib/ruby/1.8/tk.rb:1383: [BUG] cross-thread violation on 
> ip_ruby_cmd()
> ruby 1.8.2 (2004-12-25) [i686-linux]

Please check pthread support status of Ruby and Tcl/Tk on your
environment. 
The following table shows that the combination works or not.

                   Tcl/Tk libraries
                +----------+------------
        pthread |  enable  |  disable
      +---------+----------+------------
      | enable  |    OK    | maybe work
 Ruby +---------+----------+------------
      | disable |   SEGV   |    OK

If both of Ruby and Tcl/Tk libraries are enabled pthread, 
please try the latest version (on CVS) of tcltklib.c.
Maybe your trouble is fixed, because some changes were applied 
to tcltklib.c to avoid SEGV after 1.8.2 release. 
At least, I cannot reproduce the trouble on my environment.

 Vine Linux 2.6r4
 ruby 1.8.3 (2005-07-05) [i686-linux] (--enable-pthread --enable-tcltk-stubs)
 TclTkLib::RELEASE_DATE == "2005-07-05"
 Tk::TK_PATCHLEVEL == "8.5a3" (--enable-thread)

-- 
Hidetoshi NAGAI (nagai@ai.kyutech.ac.jp)