23c71e9965
* Added new lset::openLink() method, called on JSON_LINKs only * Cleanup in dbJLink.c to prevent memory leaks. * Removed jlif::start_parse() method. * Renamed jlif::end_parse() to end_child, which will be called on the parent link when a child link has succesfully finished parsing.
132 lines
5.1 KiB
C
132 lines
5.1 KiB
C
/*************************************************************************\
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* Copyright (c) 2010 The UChicago Argonne LLC, as Operator of Argonne
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* National Laboratory.
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* Copyright (c) 2002 The Regents of the University of California, as
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* Operator of Los Alamos National Laboratory.
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* EPICS BASE is distributed subject to a Software License Agreement found
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* in file LICENSE that is included with this distribution.
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\*************************************************************************/
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/* dbLink.h
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*
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* Created on: Mar 21, 2010
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* Author: Andrew Johnson
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*/
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#ifndef INC_dbLink_H
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#define INC_dbLink_H
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#include "link.h"
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#include "shareLib.h"
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#include "epicsTypes.h"
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#include "epicsTime.h"
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#include "dbAddr.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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struct dbLocker;
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typedef struct lset {
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/* Characteristics of the link type */
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const unsigned isConstant:1;
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const unsigned isVolatile:1;
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/* Activation */
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void (*openLink)(struct link *plink);
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/* Destructor */
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void (*removeLink)(struct dbLocker *locker, struct link *plink);
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/* Const init, data type hinting */
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long (*loadScalar)(struct link *plink, short dbrType, void *pbuffer);
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long (*loadLS)(struct link *plink, char *pbuffer, epicsUInt32 size,
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epicsUInt32 *plen);
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long (*loadArray)(struct link *plink, short dbrType, void *pbuffer,
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long *pnRequest);
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/* Metadata */
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int (*isConnected)(const struct link *plink);
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int (*getDBFtype)(const struct link *plink);
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long (*getElements)(const struct link *plink, long *nelements);
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/* Get data */
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long (*getValue)(struct link *plink, short dbrType, void *pbuffer,
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epicsEnum16 *pstat, epicsEnum16 *psevr, long *pnRequest);
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long (*getControlLimits)(const struct link *plink, double *lo, double *hi);
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long (*getGraphicLimits)(const struct link *plink, double *lo, double *hi);
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long (*getAlarmLimits)(const struct link *plink, double *lolo, double *lo,
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double *hi, double *hihi);
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long (*getPrecision)(const struct link *plink, short *precision);
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long (*getUnits)(const struct link *plink, char *units, int unitsSize);
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long (*getAlarm)(const struct link *plink, epicsEnum16 *status,
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epicsEnum16 *severity);
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long (*getTimeStamp)(const struct link *plink, epicsTimeStamp *pstamp);
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/* Put data */
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long (*putValue)(struct link *plink, short dbrType,
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const void *pbuffer, long nRequest);
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long (*putAsync)(struct link *plink, short dbrType,
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const void *pbuffer, long nRequest);
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/* Process */
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void (*scanForward)(struct link *plink);
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} lset;
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#define dbGetSevr(link, sevr) \
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dbGetAlarm(link, NULL, sevr)
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epicsShareFunc void dbInitLink(struct link *plink, short dbfType);
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epicsShareFunc void dbAddLink(struct dbLocker *locker, struct link *plink,
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short dbfType, DBADDR *ptarget);
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epicsShareFunc void dbLinkOpen(struct link *plink);
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epicsShareFunc void dbRemoveLink(struct dbLocker *locker, struct link *plink);
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epicsShareFunc int dbLinkIsDefined(const struct link *plink); /* 0 or 1 */
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epicsShareFunc int dbLinkIsConstant(const struct link *plink); /* -1, 0 or 1 */
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epicsShareFunc int dbLinkIsVolatile(const struct link *plink); /* -1, 0 or 1 */
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epicsShareFunc long dbLoadLink(struct link *plink, short dbrType,
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void *pbuffer);
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epicsShareFunc long dbLoadLinkArray(struct link *, short dbrType, void *pbuffer,
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long *pnRequest);
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epicsShareFunc long dbGetNelements(const struct link *plink, long *nelements);
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epicsShareFunc int dbIsLinkConnected(const struct link *plink);
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epicsShareFunc int dbGetLinkDBFtype(const struct link *plink);
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epicsShareFunc long dbGetLink(struct link *, short dbrType, void *pbuffer,
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long *options, long *nRequest);
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epicsShareFunc long dbGetControlLimits(const struct link *plink, double *low,
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double *high);
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epicsShareFunc long dbGetGraphicLimits(const struct link *plink, double *low,
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double *high);
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epicsShareFunc long dbGetAlarmLimits(const struct link *plink, double *lolo,
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double *low, double *high, double *hihi);
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epicsShareFunc long dbGetPrecision(const struct link *plink, short *precision);
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epicsShareFunc long dbGetUnits(const struct link *plink, char *units,
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int unitsSize);
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epicsShareFunc long dbGetAlarm(const struct link *plink, epicsEnum16 *status,
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epicsEnum16 *severity);
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epicsShareFunc long dbGetTimeStamp(const struct link *plink,
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epicsTimeStamp *pstamp);
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epicsShareFunc long dbPutLink(struct link *plink, short dbrType,
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const void *pbuffer, long nRequest);
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epicsShareFunc void dbLinkAsyncComplete(struct link *plink);
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epicsShareFunc long dbPutLinkAsync(struct link *plink, short dbrType,
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const void *pbuffer, long nRequest);
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epicsShareFunc void dbScanFwdLink(struct link *plink);
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epicsShareFunc long dbLoadLinkLS(struct link *plink, char *pbuffer,
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epicsUInt32 size, epicsUInt32 *plen);
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epicsShareFunc long dbGetLinkLS(struct link *plink, char *pbuffer,
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epicsUInt32 buffer_size, epicsUInt32 *plen);
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epicsShareFunc long dbPutLinkLS(struct link *plink, char *pbuffer,
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epicsUInt32 len);
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#ifdef __cplusplus
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}
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#endif
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#endif /* INC_dbLink_H */
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