Create Process and dying parents...

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5 total messages Started by peter Thu, 30 Mar 2006 19:17

#3996

Author: peter
Date: Thu, 30 Mar 2006 19:17

6 lines
884 bytes

hi, 
if I use CreateProcess in process A to create process B, how can I
make sure B exits if A is shut down?

is this possible? thanks!

Re: Create Process and dying parents...

#3999

Author: Remy Lebeau (TeamB)
Date: Thu, 30 Mar 2006 22:15

18 lines
1508 bytes

"peter" <pnandrus@attglobal.net> wrote in message
news:442c3cf4$1@newsgroups.borland.com...

> if I use CreateProcess in process A to create process B, how
> can I make sure B exits if A is shut down?

That depends on whether A is being shut down gracefully or unexpectedly.

If gracefully, then A can simply notify B to shut itself down.  How you do
that depends on what B actually is.

If unexpectedly, then the only way I can think of right now is to have A
pass its process ID as a command line parameter when launching B, and then
have B periodically check if that ID is still running.


Gambit

Re: Create Process and dying parents...

#4008

Author: peter
Date: Fri, 31 Mar 2006 14:06

32 lines
1780 bytes


What's the easiest way to check if a certain process is still
alive once I have the process ID?

thanks for the info. i hadn't even thought of that simple a 
solution.... =)




"Remy Lebeau \(TeamB\)" <no.spam@no.spam.com> wrote:
>
>"peter" <pnandrus@attglobal.net> wrote in message
>news:442c3cf4$1@newsgroups.borland.com...
>
>> if I use CreateProcess in process A to create process B, how
>> can I make sure B exits if A is shut down?
>
>That depends on whether A is being shut down gracefully or unexpectedly.
>
>If gracefully, then A can simply notify B to shut itself down.  How you do
>that depends on what B actually is.
>
>If unexpectedly, then the only way I can think of right now is to have A
>pass its process ID as a command line parameter when launching B, and then
>have B periodically check if that ID is still running.
>
>
>Gambit
>
>

Re: Create Process and dying parents...

#4015

Author: Remy Lebeau (TeamB)
Date: Fri, 31 Mar 2006 19:03

15 lines
1459 bytes

"peter" <pnandrus@attglobal.net> wrote in message
news:442d4576$1@newsgroups.borland.com...

> What's the easiest way to check if a certain process is still
> alive once I have the process ID?

You have to enumerate through all of the running processes until you find
(or don't find) the ID.  Look at the following article for details:

    How To Enumerate Applications Using Win32 APIs
    http://support.microsoft.com/default.aspx?scid=kb;EN-US;q175030


Gambit

Re: Create Process and dying parents...

#4016

Author: Eric Noel
Date: Fri, 31 Mar 2006 19:26

8 lines
1284 bytes

> What's the easiest way to check if a certain process is still
> alive once I have the process ID?

If you don't need win9x compatibility, then you could use 
OpenProcess(SYNCHRONIZE,false,ProcessID). Then you can use 
WaitForSingleObject to poll the state.

- Eric

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