pstree on windows xp - find process spawned from windows process

[Larry Hall (Cygwin)]

Matthias Andree wrote:
> Am 24.04.2009, 00:07 Uhr, schrieb Larry Hall (Cygwin) 
> <reply-to-list-only-lh@cygwin.com>:
> 
>> nachum wrote:
>>>>> Hi, I'm new to cygwin, and I am beginning to like it. I am having 
>>>>> trouble
>>>>> though with child processes that have only Windows PIDs and not cygwin
>>>>> PIDs.
>>>>>
>>>>> When I run Xilinx bitgen from cygwin 2 processes are run both with the
>>>>> name
>>>>> bitgen.exe. Below I am running bitgen through make.
>>>>>
>>>>>       PID    PPID    PGID     WINPID  TTY  UID    STIME COMMAND
>>>>> S    3936    2836    3936       2380    0 12696 19:54:49 /usr/bin/make
>>>>> S     808    3936    3936       2852    0 12696 19:54:49
>>>>> /cygdrive/c/Xilinx/10.1/ISE/bin/nt/bitgen
>>>>>      2852       0       0       2852    ?    0 19:54:49
>>>>> c:\Xilinx\10.1\ISE\bin\nt\bitgen.exe
>>>>>       504       0       0        504    ?    0 19:54:49
>>>>> c:\Xilinx\10.1\ISE\bin\nt\unwrapped\bitgen.exe
> 
>> Since I'm not sure what Xilinx is doing, I can't really say.  Someone 
>> else
>> here *might* be able to tell you, if they have run into the same thing
>> either with Xilinx or some other native Windows app.  But since this
>> probably has more to do with Xilinx's particular implementation and less
>> to do with Cygwin proper, this would be off-topic for this list.  That's
>> one of the reasons why I was suggesting talking to the Xilinx folks.  
>> That
>> and the fact that they should know exactly what they're doing, why, and
>> how you might track it.
> 
> Not entirely - the problem being that pstree always uses Cygwin PIDs 
> which are not necessarily the same as WINPIDs - it would be quite useful 
> if pstree had an option to display Windows PIDs.
> 
> (In fact, I had to rewrite the PIDs in my pstree output of the git-svn 
> report on this list some hours earlier to the winpids to match the 
> sysinternals handle output...)

And that's benefit of open source. :-)  Perhaps you'd want to prepare
a patch that you can offer to the upstream 'psmisc' maintainers to see if
they want to incorporate your solution to your "itch".  If not and if all
you need is something to tell you what the Windows PID is for a particular
Cygwin PID, you do have 'ps' as well, as you've noted above.  It's also
worthwhile to note that Cygwin PIDs differ from Windows PIDs only when there
is a need to 'fork'.  Since Windows doesn't do this and 'bitgen' is clearly
a Windows app, the "two" PIDs will match in this case and will be the
Windows PID, if that helps you.

-- 
Larry Hall                              http://www.rfk.com
RFK Partners, Inc.                      (508) 893-9779 - RFK Office
216 Dalton Rd.                          (508) 893-9889 - FAX
Holliston, MA 01746

_____________________________________________________________________

A: Yes.
 > Q: Are you sure?
 >> A: Because it reverses the logical flow of conversation.
 >>> Q: Why is top posting annoying in email?

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