Re: [PATCH] fetch-pack: Prepare for a side-band demultiplexer in a thread.

From: Alex Riesen <raa.lkml@gmail.com>
Date: Nov 18, 2007, 01:05 UTC
Message-ID: <20071118010532.GC7664@steel.home>
In-Reply-To: <7vtznkz8nw.fsf@gitster.siamese.dyndns.org>

Junio C Hamano, Sun, Nov 18, 2007 01:42:11 +0100:

Show 12 quoted lines

> Johannes Sixt <johannes.sixt@telecom.at> writes:
> 
> > 	This change again originates from the MinGW port. Since we don't
> > 	have fork(2) on Windows, we must run the sideband demultiplexer
> > 	in a thread.
> 
> If the rationale was "running in a thread is more natural on the
> platform", I would understand it.
> 
> But "_must_ run because there is no fork(2)" solicits a "Huh?
> How does Cygwin does it then?" from me.
>

You wont believe it: they start the currently running program again and copy parents memory over into the child. Sometimes it fails. If you want something scary: http://cygwin.com/cgi-bin/cvsweb.cgi/src/winsup/cygwin/fork.cc?rev=1.193&content-type=text/x-cvsweb-markup&cvsroot=src