Re: Reaping a process without a parent process/service/daemon

Thanks for the replies...you guys are right...I sort of realized that while I
was typing up the message, but wanted to get some confirmation that my
thinking was correct. Your replies confirm that. Thanks again!

"Alexander Nickolov" wrote:

You don't need a parent-child relationship as long as you
have the PID and the rights to open the process. See the
OpenProcess() API.

--
=====================================
Alexander Nickolov
Microsoft MVP [VC], MCSD
email: agnickolov@xxxxxxxx
MVP VC FAQ: http://vcfaq.mvps.org
=====================================

"vka2b" <vka2b@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:1DB23F46-8650-465C-B908-D79AEFC789C8@xxxxxxxxxxxxxxxx
Hello,

I am currently in the process of porting my company's application from
UNIX/Linux to Windows. The way our application currently runs is as
follows:
We have a daemon process that runs in the background and polls a database.
As soon as it detects a pre-defined condition in the database, it forks
and
execs a child process that carries out some specified behavior.

In the Windows world, we would normally just replace the daemon with a
Windows service. However, we are trying to avoid doing so, and would like
to
just be able to manually directly execute the processes that the
daemon/service would normally kick off. This should be straightforward,
however, there is one piece of functionality that the UNIX/Linux daemon
process used to provide that I am not sure how to duplicate if we don't
have
some sort of parent process/service: The daemon would check the status of
the child processes (i.e. using waitpid) and take appropriate actions
depending on if the child exited cleanly or not.

I know that Visual C++ has the GetExitCodeProcess method that is
equivalent
to waitpid, but this would involve at least having some sort of
shell/parent
process that kicks off the underlying process to monitor (not necessarily
a
service, but still not running the process directly). Is there any other
way
in the Windows world to determine the status of a process? I have heard
some
ideas such as check the Windows Event Log and such, but I wanted to see if
anybody in the forums had a more specific/programmatic solution.

Any help is greatly appreciated. Also, please let me know if I posted
this
to the wrong place (it seemed like the most fitting, but I apologize if
it's
not).

Thanks,
Vineet



.

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