Craddock, Chris wrote:
Unfortunately, it's like Einstein's cat. You can only know the state of the system by observing it and in making the observation you gain some information and lose other information. You literally cannot know for sure and there is no lock you can hold to prevent the state from changing on other cpus while you're dinking around. Even the dispatcher doesn't have that power.
I don't know whether Einstein ever had a cat, but I assume you mean Schroedinger's cat (indeterminate state until the wave function collapses)?
When I wrote my first SRB routines, some decades past, I had a lot of fun debugging it. I had copied a subroutine used elsewhere, and never noticed that it tried to get some information via PSATOLD. Surprise!
Gerhard Postpischil Bradford, VT ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
