Edward Jaffe wrote: > And, in the absence of contention, WAIT/POST in professionally-developed > software becomes orders of magnitude faster since everyone knows to skip > the WAIT if the post bit is on and to attempt a "quick" POST of the ECB > (using CS) if the wait bit is off.
I understand the "quick POST" trick w/CS, but bypassing WAIT? I can see how that would work for something like waiting on I/O completion, but for trading control back and forth, I think it requires (for example) an auxiliary counter (and CDS to update both the ECB and the counter simultaneously). Am I missing something? -- Jerry ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
