From: Joel VanderWerf <vjoel@...>
Date: 2006-02-19T09:18:16+09:00
Subject: Re: Thread#stop


And with a little extra work, one can use this to approximate
Thread#backtrace as well as Thread#stop (neither of which exist):

th = Thread.new do
  loop do
    sleep 0.1
    puts "alive!"
  end
end

sleep 0.3

puts "stopping"
stopper = proc {|event, file, line, id, binding, classname|
  if Thread.current == th
    puts caller.join("\n    from ")
    Thread.stop
  end
}
set_trace_func stopper

sleep 1

puts "starting"
set_trace_func nil
th.wakeup

sleep 0.3


alive!
alive!
stopping
thread-stop.rb:6
    from thread-stop.rb:6
    from thread-stop.rb:4
    from thread-stop.rb:3
starting
alive!
alive!
alive!



(This is only approximate because the thread isn't stopped until after
the interpreter finishes whatever current ruby primitive is evaluating,
but it's good enough for my purposes.)

-- 
      vjoel : Joel VanderWerf : path berkeley edu : 510 665 3407