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Re: [Chicken-users] Can't get exit values of (process...)?

From: felix winkelmann
Subject: Re: [Chicken-users] Can't get exit values of (process...)?
Date: Thu, 18 Jan 2007 12:16:08 +0100

On 1/17/07, Zbigniew <address@hidden> wrote:

But you might have more success arguing that "process" should not ever
invoke a wait() call when you close its ports, and instead leave that
up to the user.  Since you receive the PID from "process", you can
process-wait on it, and retrieve the error code yourself.  This way,
process does the dirty work of setting up and tearing down a new
process and bi-directional pipes, while you can do the easy work of

What do people think?  Should the wait() be removed from process?

I think it shouldn't. The exit-status is a weak mechanism of communicating
with the calling instance. Requiring a waitpid will just end up in unreaped
child processes. If osprocess provides all the necessary things, users should
prefer that for special requirements.


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