Re: Cloning a perl program on Win32

[Shane McCarron]

This would definitely work - we do it now to emulate "background" 
execution.  However, we have a related problem that hopefully someone 
has solved.  Consider this model:

CLIENT  <-->  PARENT  <-->  CHILD
                     <-->  CHILD2
                     <-->  CHILD3
The PARENT process is a daemon written in perl that is listening for 
incoming requests to perform various tasks.  As those requests come in, 
PARENT needs to start up CHILD scripts (or executables - doesn't really 
matter) and then communicate with those CHILD processes via STDIN and 
STDOUT (think something interactive like "bc").  When the CHILD 
completes, we clean it up and wait for more requests.  While it is 
running, the CLIENT might be polling the PARENT for status, or sending 
instructions to start new CHILDren or whatever.

On UNIX/Linux, we achieve this using select and it works very well.  On 
Windows, apparently select does not work on "files", only on sockets.  
We are tearing our hair out trying to resolve this, but so far no joy.  
Does anyone have any suggestions?

$Bill Luebkert wrote:
Well, if you need the orig script to die for some reason, then the exec
should handle that.  I don't really understand the why of it all.
You could also use Win32::Process::Create and specify DETACHED_PROCESS
for the 5th arg and then just exit the orig script (I think that
should work for you also).
 

--
Shane P. McCarron                          Phone: +1 763 786-8160 x120
Managing Director                            Fax: +1 763 786-8180
ApTest Minnesota                            Inet: [EMAIL PROTECTED]
_______________________________________________
ActivePerl mailing list
[EMAIL PROTECTED]
To unsubscribe: http://listserv.ActiveState.com/mailman/mysubs