From: nobu.nokada@...
Date: 2002-07-11T07:41:09+09:00
Subject: Re: Waits are not interrupted by signals

Hi,

At Thu, 11 Jul 2002 06:53:08 +0900,
Bob Alexander wrote:
> It appears that functions that are waiting are not interrupted by a
> signal being handled. The wait just continues, although I would expect
> it to raise Errno::EINTR.

Because it's handled.

> This seems like a bug to me, since a signal handler typically sets a
> state that needs to be examined by the program's main flow of
> control. If that doesn't happen, it can be impossible to respond to
> signals in a timely way .

trap("USR1") {
  p "handler invoked"
  raise SignalException.new("SIGUSR1")
}
p Process.pid
begin
    p $stdin.read(1)
rescue SignalException => e
    p e
end

-- 
Nobu Nakada