Thanks for raising 'ps -W' behavior Chris. It is interesting.
> >From what I gather, the root problem is that for some processes (as
> >demonstrated by my testcase script), the CW_GETPINFO_FULL query returns:
> >1. Invalid PPIDs
>
> Only PPIDs for cygwin processes are returned. Everything else should be
> 0.
This isn't happening in my testcase - a Perl script that forks, then
executes `/bin/sleep` with a Perl backtick. Proc::ProcessTable (i.e.
CW_GETPINFO_FULL) returns invalid PPID (0) and PID (the WINPID) for the
child sleep process, but it does returns correct PID and PPID data for the
fork-ed Perl parent processes.
The PID/PPID of the backticked sleep process shows up correctly in 'ps'.
Would this be an issue within CW_GETPINFO_FULL?
> >2. WINPID instead of Cygwin PID.
>
> A cygwin pid can actually be spread across two processes. You see this
> with
> "ps -W" if you do something like:
>
> bash -c "exec sleep 20"
>
> in one window and:
>
> ps -W
>
> in another window.
I tried this but don't see what you mean. Here, in one window, I do:
=======================
$ bash -c "exec sleep 20"
=======================
In the second window, 'ps -W' only reports the PID & PPID for a single sleep
process:
===================================
$ ps -W | grep sleep
1012 0 0 1012 ? 0 14:57:51
C:\cygwin\bin\sleep.exe
===================================
However, instead of sleep, if I run a windows program like calc.exe in the
background, ps -W reports two processes: Was this what you meant about the
cygwin pid being spread across two processes?
===================================
$ calc &
[1] 2380
$ ps -W | grep calc
2380 3780 2380 3604 0 400 15:18:21
/cygdrive/c/WINDOWS/system32/calc
3604 0 0 3604 ? 0 15:18:22
c:\WINDOWS\system32\calc.exe
===================================
Regards,
Sonam Chauhan
--
Electronic Commerce, Corporate Express Australia Ltd.
Phone: +61-2-9335-0725, Email: [EMAIL PROTECTED]
>
> cgf
>
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