Re: [foxboro] OSISoft PI Startup on P90 Windows 2003 Server

Corey,

Re: Shutting down
As always, things depend on the developer, but all of the things you are
concerned about are handled properly in a properly developed Windows
program.


Background programs (Windows Services) receive a signal to shutdown from
the Service Control Manager. A well written program handles that
request. The request can also come from the user. The user request
originates by stopping the service from the Services control panel.

Programs that care to can also handle some (but not all) of the signals
that a UNIX program would be expected to handle using the same calls.


Re: Porting

In fact, one can pretty readily port any UNIX program to Windows by
linking against oldnames.lib. 

The exception is the use of fork(). There is a parent/child relationship
in fork() that is not fully supported by MS's OS and that leads to
various porting issues.

I dealt with it by #ifdef'ing a little code to use either fork() (for
Solaris) or CreateProcess() (for Windows) with some supporting code to
maintain source code compatibility. It wasn't that hard to do, but it's
irritating.

Whenever possible, I avoid using NutCracker's DLLs and LIBs directly.
This is generally quite possible.


Re: .Net Support
We run .Net on our I/A Series systems to support all of the InFusion ECS
components. 

Hope this helps.

Regards,
 
Alex Johnson
Invensys Process Systems
10900 Equity Drive
Houston, TX 77041
+1 713 329 8472 (desk)
+1 713 329 1600 (operator)
+1 713 329 1944 (SSC Fax)
+1 713 329 1700 (Central Fax)
alex.johnson@xxxxxxxxxxxxxxxx



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