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Subject:	Re: ps questions
From:	Warren Young <warren AT etr-usa DOT com>
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Date:	Thu, 18 Dec 2014 11:54:26 -0700
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On Dec 18, 2014, at 11:51 AM, Corinna Vinschen <corinna-cygwin AT cygwin DOT com> wrote:

> On Dec 18 11:40, Warren Young wrote:
>> On Dec 18, 2014, at 10:33 AM, Corinna Vinschen <corinna-cygwin AT cygwin DOT com> wrote:
>> 
>>> On Dec 18 10:26, Warren Young wrote:
>>>> 
>>>> ...Cygwin doesn’t do something similar?
>>> 
>>> Cygwin isn't a kernel and the process
>>> information is kept in shared memory regions held by the parent process
>>> and the process itself.  This model has limitations you don't have on a
>>> real kernel.
>> 
>> I’m aware of that, but can’t the DLL see both the birth and death of
>> every Cygwin process?  Birth via either DllMain() or execvp(2), and
>> death via one of the methods here:
> 
> Aren't we talking about fetching info from non-Cygwin processes?

Of course.  But if you keep a table of all Cygwin processes, you can tell whether you’re being asked for info for a native process vs a Cygwin one, and handle <defunct> differently for the two cases.
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