68 lines
2.0 KiB
C
68 lines
2.0 KiB
C
/* $Id$
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* Author: Jeffrey O. Hill
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* Date: 4-1-89
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*
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* Experimental Physics and Industrial Control System (EPICS)
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*
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* Copyright 1991, the Regents of the University of California,
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* and the University of Chicago Board of Governors.
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*
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* This software was produced under U.S. Government contracts:
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* (W-7405-ENG-36) at the Los Alamos National Laboratory,
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* and (W-31-109-ENG-38) at Argonne National Laboratory.
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*
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* Initial development by:
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* The Controls and Automation Group (AT-8)
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* Ground Test Accelerator
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* Accelerator Technology Division
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* Los Alamos National Laboratory
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*
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* Co-developed with
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* The Controls and Computing Group
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* Accelerator Systems Division
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* Advanced Photon Source
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* Argonne National Laboratory
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*
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* NOTES:
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*
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* Modification Log:
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* -----------------
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*/
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#ifndef INCLdb_field_logh
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#define INCLdb_field_logh
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/*
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* Simple native types (anything which is not a string or an array for
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* now) logged by db_post_events() for reliable interprocess communication.
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* (for other types they get whatever happens to be there when the lower
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* priority task pending on the event queue wakes up). Strings would slow down
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* events for more reasonable size values. DB fields of native type string
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* will most likely change infrequently.
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*
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*/
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union native_value{
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short dbf_int;
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short dbf_short;
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float dbf_float;
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short dbf_enum;
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char dbf_char;
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long dbf_long;
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double dbf_double;
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#ifdef DB_EVENT_LOG_STRINGS
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char dbf_string[MAXSTRINGSIZE];
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#endif
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};
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/*
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* structure to log the state of a data base field at the time
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* an event is triggered.
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*/
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typedef struct{
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unsigned short stat; /* Alarm Status */
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unsigned short sevr; /* Alarm Severity */
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TS_STAMP time; /* time stamp */
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union native_value field; /* field value */
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}db_field_log;
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#endif /*INCLdb_field_logh*/
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