From: nobu.nokada@...
Date: 2005-06-26T22:22:40+09:00
Subject: Re: speeding up Process.detach frequency

Hi,

At Sun, 26 Jun 2005 19:28:09 +0900,
Yukihiro Matsumoto wrote in [ruby-talk:146512]:
> |> |It seems like a bug of Process.detach.  After it received the
> |> |termination, it unnecessarily waits for one second again.
> |> 
> |> Right.  But using rb_waitpid() withouth WNOHANG does busy-wait.
> |
> |It should check periodically once per 0.06sec in
> |rb_thread_polling().
> 
> Isn't it too often for most of the cases?

I don't think it is a too heavy process, though it would not be
a problem if it were less frequent.

> |Or if it's not enough, a patch to use SIGCHLD.
> 
> I'm not sure if SIGCHLD is available on non-UNIX platforms.

Of course not, but nothing will change on such platforms.  And
it would be possible to emulate it, e.g., a watcher native
thread could wake up a ruby thread waiting for a child.

-- 
Nobu Nakada