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Timeout on AST and message reschedules

If the application sets RETVAL and then returns with STATUS requesting an AST or message reschedule, the fixed-part will also set a timed reschedule for the time indicated in RETVAL. If the AST or message event happens first, the timer is cancelled. Implications of this are that if the application has been ``accidentally" setting RETVAL in the past, it will now set up a timer, and alternatively, if a single action has been managing to set up multiple timers for itself, it will now only be able to have one outstanding at any one time.



next up previous 61
Next: Closing down the Parameter system - Global associations
Up: For ``old'' programmers
Previous: Message reschedules

ADAM Guide to Writing Instrumentation Tasks
Starlink User Note 134
B D Kelly
A J Chipperfield

30 March 1992
E-mail:ussc@star.rl.ac.uk

Copyright © 2000 Council for the Central Laboratory of the Research Councils