From: Tanaka Akira <akr@...17n.org>
Date: 2002-05-31T15:25:04+09:00
Subject: [ruby-dev:17243] Re: race condition on Queue#pop?

In article <200205300156.g4U1uxf15056@sharui.nakada.kanuma.tochigi.jp>,
  nobu.nakada@nifty.ne.jp writes:

> Mutex#lock$B$HB7$($F$3$s$J$N$H$+!#(B
> 
>   def pop(non_block=false)
>     begin
>       while (Thread.critical = true; @que.empty?)
> 	raise ThreadError, "queue empty" if non_block
> 	@waiting.push Thread.current
> 	Thread.stop
>       end
>       @que.shift
>     ensure
>       Thread.critical = false
>     end
>   end

$B$3$l$OC;$/$F$$$$$G$9$M$'!#;W$$$D$-$^$;$s$G$7$?!#(B
-- 
[$BEDCf(B $BE/(B][$B$?$J$+(B $B$"$-$i(B][Tanaka Akira]
$B!V$U$($m(B! $B$o$+$a$A$c$s:n@o$G$9$(C"=$B!W(B(Little Worker, $B7KM7@84](B)