From: Nikodemus Siivola <tsiivola@...>
Date: 2002-05-10T19:22:30+09:00
Subject: Re: timeout.rb problem


On Fri, 10 May 2002 nobu.nokada@softhome.net wrote:

> > I am wondering if there should be a companion method, such as
> > "timebreak" that merely rudely interrupts the execution of a the block
> > instead of raising an exception.

> Like a signal handler?

Like:

#!/usr/bin/ruby

def timebreak(sec)
  res = nil
  sub = Thread.start {
    res = yield sec
  }
  sleep sec                 # This is a bit simplistic: we should
  sub.kill if sub.alive?    # return before "sec" seconds if the block
  return res                # has finished execution, not just hang for
end                         # the given time...

if __FILE__ == $0
  p timebreak(1) {
    sleep 2
    "killed asleep"
  }
  p timebreak(2) {
    sleep 1
    "done in time"
  }
end

__END__