Mailing-List: contact cygwin-developers-help AT sourceware DOT cygnus DOT com; run by ezmlm
List-Subscribe: <mailto:cygwin-developers-subscribe AT sources DOT redhat DOT com>
List-Archive: <http://sources.redhat.com/ml/cygwin-developers/>
List-Post: <mailto:cygwin-developers AT sources DOT redhat DOT com>
List-Help: <mailto:cygwin-developers-help AT sources DOT redhat DOT com>, <http://sources.redhat.com/ml/#faqs>
Sender: cygwin-developers-owner AT sources DOT redhat DOT com
Delivered-To: mailing list cygwin-developers AT sources DOT redhat DOT com
Date: Mon, 4 Dec 2000 21:19:37 +0300
From: Egor Duda <deo AT logos-m DOT ru>
X-Mailer: The Bat! (v1.45) Personal
Reply-To: Egor Duda <cygwin-developers AT sources DOT redhat DOT com>
Organization: DEO
X-Priority: 3 (Normal)
Message-ID: <74172542523.20001204211937@logos-m.ru>
To: Matt <matt AT use DOT net>
CC: cygwin-developers AT sources DOT redhat DOT com
Subject: Re: bash/cygwin leaking process handles
In-reply-To: <Pine.NEB.4.10.10012032252140.25290-100000@cesium.clock.org>
References: <Pine DOT NEB DOT 4 DOT 10 DOT 10012032252140 DOT 25290-100000 AT cesium DOT clock DOT org>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit

Hi!

Monday, 04 December, 2000 Matt matt AT use DOT net wrote:

M> Anyways, I updated to 1.1.6 and all that good stuff on my NT4 laptop.
M> While I was testing my update to cygcheck, I noticed the bash.exe process
M> had some handles open to non-existant processes. (Using handleex, @
M> http://www.sysinternals.com/handleex.zip). You can also see this occurring
M> by adding the Handle Count column to Task Manager.

M> This is pretty easy to reproduce:
M> 1. start a fresh bash instance
M> 2. start another bash instance from inside the original instance
M> 3. exit the last bash instance you started
M> 4. repeat.

i   cannot  reproduce  it on my home build dated 2000-11-24. i'm using
Nt  4.0  sp  5.  handle  count  is  stable,  and nthandle utility from
sysinternals  shows  no  new  handles owned  by parent bash process no
matter  how  much  times i repeat. maybe you have something special in
your  ~/.bashrc or ~/.profile? i  know at least one possible reason of
handle  leak  --  ntvdm.exe  opens %SystemRoot%/system32/ega.cpi  each
time    some    dos  program  runs in console window, but never closes
them.  since  ntvdm  is  started  only once per console group, we have
handle  leak.  However,  all  those leaked handles go to ntvdm, not to 
bash, so it doesn't match your description.

anyway,  you  may  want to use nthandle from sysinternals to see, what
those  leaked  handles  really  are -- files, pipes, sockets, etc. And
make  sure  you  have  "clean" environment -- use standard .bashrc and
.profile

Btw, what about using sh instead of bash? do sh leaks handles too?

Egor.            mailto:deo AT logos-m DOT ru ICQ 5165414 FidoNet 2:5020/496.19