From: Ilmari Heikkinen <ilmari.heikkinen@...>
Date: 2005-12-12T19:32:42+09:00
Subject: Re: Ruby for small devices ?

On 12/9/05, Wilson Bilkovich <wilsonb@gmail.com> wrote:> Check out the "Embedding Ruby" presentation from RubyConf 2005:> http://www.zenspider.com/dl/rubyconf2005/EmbeddedRuby.pdf
The leaking Mutex problem showcased in the presentation page 27, Ithink the following change fixes it at least for #synchronize :
  def unlock    return unless @locked    Thread.critical = true-   @locked = false    begin      t = @waiting.shift+      @locked = t # if there is a waiting thread, keep the mutex locked      t.wakeup if t    rescue ThreadError      retry    end    Thread.critical = false# if @locked is false, a thread entering #lock sets Thread.critical=true here,# checks for @locked, sees that it's false, and jumps the queue    begin      t.run if t    rescue ThreadError    end    self  end