From: "Todd A. Jacobs" <tjacobs-sndr-019fdb@...>
Date: 2007-06-06T04:02:18+09:00
Subject: Problems with IO.popen in ruby 1.8.2?

I have the following code snippet:

    sleep 0.3
    IO.popen('/usr/bin/xclip -o').readlines {|f| print}

running in a tight loop. If I let it run for a short time (about 25
seconds), I get this error:

    Enter URL: ./dice.rb:89:in `popen': Too many open files - /usr/bin/xclip -o (Errno::EMFILE)
	    from ./dice.rb:89:in `read'
	    from ./dice.rb:181
	    from ./dice.rb:162:in `loop'
	    from ./dice.rb:162

I don't understand the nature of the error, since the pipe is implicitly
closed when the block exits, right? Event if I change the line to:

    IO.popen('/usr/bin/xclip -o').readlines {|f| print; f.close}

I still have the same problem. So, what file resource is being consumed,
and how do I fix it?

-- 
"Oh, look: rocks!"
	-- Doctor Who, "Destiny of the Daleks"