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Date: Fri, 29 Apr 2005 00:26:32 -0700
From: Yitzchak Scott-Thoennes <sthoenna AT efn DOT org>
To: cygwin AT cygwin DOT com
Subject: Re: Help understanding process tree
Message-ID: <20050429072631.GC3112@efn.org>
References: <4270F2F5 DOT 5010000 AT agilent DOT com> <20050428150258 DOT GB13295 AT trixie DOT casa DOT cgf DOT cx>
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On Thu, Apr 28, 2005 at 11:02:58AM -0400, Christopher Faylor wrote:
> On Thu, Apr 28, 2005 at 07:28:05AM -0700, Earl Chew wrote:
> >I'm working on a cygwin problem and have been looking at the Win32
> >process tree structure using Process Explorer from Sysinternals:
> >
> >http://www.sysinternals.com/ntw2k/freeware/procexp.shtml
> >
> >I'd like help understanding why Process Explorer shows cygwin
> >child processes as orphans, but win32 child processes as children.
> >
> >How is this so?
> >
> >For example, if I start bash, then start cmd /c dir, I will see:
> >
> >bash
> >  bash
> >    cmd /c dir
> >
> >My reading of the code is that the 2nd bash is the fork-stub that is
> >waiting for cmd to complete.
> >
> >Now, if I start sleep 30, I will see:
> >
> >bash
> >sleep 30
> 
> Right.  cmd is a non-cygwin program so it needs a cygwin stub to handle
> being "execed".  sleep is a cygwin program and does not require any
> hand holding.

Now go back and reread the sentence where he says "I'd like help
understanding why..." :)

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