[fpc-pascal] Checking Linux process existence (child or not) without OS command ?

fpclist at silvermono.co.za fpclist at silvermono.co.za
Mon Sep 21 16:36:50 CEST 2009

While scanning /proc may not be portable, the question asked is about checking 
for a running Linux process. The only way I know is scanning all directories 
within /proc (which as you all know are the id's of the running processes) 
and checking for the process file name and the process command line. If a 
match is found, you can assume that the process is acknowledged by the kernel 
as running, although the process could be a zombie process. You can then 
further deduce whether the latter is the case by scanning  /proc/xxx/~cwd 
which will be unreadable (unable to be openned) if the process is a zombie 

If someome has a better way, please tell.

On Monday 21 September 2009 14:58:20 T. Guilleminot wrote:
> Hi,
> Does anyone know a simple way to check if a Linux process exists/runs
> (child or not) *without* running an OS command via TProcess (or other)?
> Thanks.
> Tom
> _______________________________________________
> fpc-pascal maillist  -  fpc-pascal at lists.freepascal.org
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