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Doc updates to PINI, PHAS & EVNT

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This commit is contained in:
Rolf Keitel
2023-07-25 11:36:44 -05:00
committed by Andrew Johnson
parent 80e62031e9
commit 524f81b8bd
1 changed files with 17 additions and 12 deletions
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29
modules/database/src/ioc/db/dbCommon.dbd.pod
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@@ -91,20 +91,25 @@ For example these rates are all valid:
1 second
2 Hertz
The B<PINI> field specifies record processing at initialization. If it is set
to YES during database configuration, the record is processed once at IOC
initialization (before the normal scan tasks are started).
The B<PINI> field specifies record processing at initialization. It can have the
values NO, YES, RUN, RUNNING, PAUSE, and PAUSED. If it is set to YES during
database configuration, the record is processed once at IOC initialization
(before the normal scan tasks are started). For the other values see
L<menuPini.dbd|menuPini> for more details.
The B<PHAS> field orders the records within a specific SCAN group. This is not
meaningful for passive records. All records of a specified phase are processed
before those with higher phase number. It is generally better practice to use
linked passive records to enforce the order of processing rather than a phase
number.
The B<PHAS> field orders the records processed within a specific SCAN group or
PINI processing phase. All records of a specified phase are processed before
those with higher phase number. It is generally better practice to use linked
passive records to enforce the order of processing rather than a phase number.
If the PINI field is set to NO, the PHAS field is not meaningful for passive
records.
The B<EVNT> field specifies an event number. This event number is used if the
SCAN field is set to C<Event>. All records with scan type C<Event> and the
same EVNT value will be processed when a call to post_event for EVNT is made.
The call to post_event is: post_event(short event_number).
The B<EVNT> field specifies an event name or number. This event identifier is
used if the SCAN field is set to C<Event>. All records with scan type C<Event>
and the same EVNT value will be processed when that event is signalled by other
software running in the IOC, either by calling C<post_event(int event)> for
numeric events, or by calling C<postEvent()> with an event handle previously
looked up using C<eventNameToHandle()> for named events.
The B<PRIO> field specifies the scheduling priority for processing records
with SCAN=C<I/O Event> and asynchronous record completion tasks.