Lisp Knowledgebase
Title: Process Priorities
ID: 10019
| Product: LispWorks, LispWorks for Linux, LispWorks for Windows Version: All OS: All | |
| Description: Each process has a priority and can either be runnable, blocked or suspended. If there is a runnable process with priority P, then no processes with priority less than P will run. When there are runnable processes with equal priority, they will be scheduled in a round-robin manner. If a process with priority P is running and a blocked process with priority greater than P becomes runnable, the second process will run when the scheduler is next invoked (either explicity or at the next preemption tick). In order to change a process priority various internal data structures need to be updated. The best way to do this is to call MP:CHANGE-PROCESS-PRIORITY (mp:change-process-priority proc-1 10) An alternative way is to create the process with the desired priority by passing the :PRIORITY keyword to MP:PROCESS-RUN-FUNCTION. (list (mp:process-run-function "SORTER-DOT" '(:priority 10) #'sorter #\.) (mp:process-run-function "SORTER-DASH" () #'sorter #\-)) | |
| See Also: Workaround: Patch: | |
| Hardware:N/A | |
| Summary:How does the process scheduler work? | |
| Bug#: | |
| Patch Enhancement#: | |
| Reported:5313 | |