On Tue, 4 Jul 2006 16:31:18 -0500 Vic Petrone <[EMAIL PROTECTED]> wrote:
:>I have an SRB that is scheduled to run in a target address space. The SRB :>attempts to determine the status (wait, active and ready) of all TCBs from :>job step down. The SRB holds the local lock before attempting to check the :>status. I'm trying to figure out a couple of things: :>1) How can the SRB determine if the TCB is ready to execute (i.e. :>dispatchable)? :>2) What other things besides the TCBACTIV bit, must be tested in order to :>know if a TCB is active?. I found an old post (cached on Google from IBM- :>MAIN dated 10Sep1999) that says the following... :>..."Don't assume anything about TCBACTIV. The entire picture of a task's :>dispatchability is incredibly volatile and (paraphrasing Alice) you have to :>look at several unbelievable things at once to get the full picture. :>Fortunately the dispatcher is the only guy who really needs to and he's :>twisted anyway "... :>Any help would be greatly appreciated. The real question is "what are you trying to do?". Let us say that you find that at that moment tasks A & B are dispatchable and C & D are not. What will you do? -- Binyamin Dissen <[EMAIL PROTECTED]> http://www.dissensoftware.com Director, Dissen Software, Bar & Grill - Israel Should you use the mailblocks package and expect a response from me, you should preauthorize the dissensoftware.com domain. I very rarely bother responding to challenge/response systems, especially those from irresponsible companies. ---------------------------------------------------------------------- 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
