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- Event_flag abstract "An event flag is a process synchronization primitive in the OpenVMS operating system. It has two possible states, set or cleared. The following basic primitive operations are provided: Set event flag ($SETEF) Clear event flag ($CLREF) Wait for event flag ($WAITFR)--if the flag was clear, this would make the process wait until it was set. If the flag was already set, this would immediately return, leaving the flag set.Additional synchronization operations are: $WFLOR--wait for any of the specified event flags to be set. $WFLAND--wait for all the specified event flags to be set.Event flags can be either local (per-process) or common (accessible by more than one process). Each process has its own set of 64 local flags, numbered 0-63. It is also possible to associate the process with up to 2 sets of common event flags. These come in sets of 32 each, and the process can assign them numbers 64-95 or 96-127. They come into existence when the first process associates with them, and disappear when the last process removes its association.Every potentially time-consuming asynchronous system call (QIO among others) includes an argument specifying the number of an event flag to set on completion.Compare semaphore.".
- Event_flag wikiPageID "3457866".
- Event_flag wikiPageLength "1409".
- Event_flag wikiPageOutDegree "6".
- Event_flag wikiPageRevisionID "401577058".
- Event_flag wikiPageWikiLink Category:OpenVMS.
- Event_flag wikiPageWikiLink Category:Operating_system_technology.
- Event_flag wikiPageWikiLink OpenVMS.
- Event_flag wikiPageWikiLink QIO.
- Event_flag wikiPageWikiLink Semaphore_(programming).
- Event_flag wikiPageWikiLink Synchronization.
- Event_flag wikiPageWikiLinkText "Event flag".
- Event_flag wikiPageWikiLinkText "event flag".
- Event_flag hasPhotoCollection Event_flag.
- Event_flag wikiPageUsesTemplate Template:Unreferenced.
- Event_flag subject Category:OpenVMS.
- Event_flag subject Category:Operating_system_technology.
- Event_flag hypernym Synchronization.
- Event_flag type Article.
- Event_flag type Software.
- Event_flag type Article.
- Event_flag comment "An event flag is a process synchronization primitive in the OpenVMS operating system. It has two possible states, set or cleared. The following basic primitive operations are provided: Set event flag ($SETEF) Clear event flag ($CLREF) Wait for event flag ($WAITFR)--if the flag was clear, this would make the process wait until it was set.".
- Event_flag label "Event flag".
- Event_flag sameAs m.09dhkr.
- Event_flag sameAs Q5416717.
- Event_flag sameAs Q5416717.
- Event_flag wasDerivedFrom Event_flag?oldid=401577058.
- Event_flag isPrimaryTopicOf Event_flag.