Files
epics-base/modules/database/src/std/dev/devEventSoft.c
Andrew Johnson 3c99391d93 Added SPDX License ID to all EPICS-original source files
In some cases the license-identification header was missing,
so I added that as well. Replaced the remaining headers that
specifically identified "Versions 3.13.7 and higher".

Makefiles and the build system were deliberately excluded.
2020-08-03 11:53:01 -05:00

89 lines
2.2 KiB
C

/*************************************************************************\
* Copyright (c) 2008 UChicago Argonne LLC, as Operator of Argonne
* National Laboratory.
* Copyright (c) 2002 The Regents of the University of California, as
* Operator of Los Alamos National Laboratory.
* SPDX-License-Identifier: EPICS
* EPICS BASE is distributed subject to a Software License Agreement found
* in file LICENSE that is included with this distribution.
\*************************************************************************/
/*
* Author: Janet Anderson
* Date: 04-21-91
*/
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "alarm.h"
#include "dbDefs.h"
#include "dbAccess.h"
#include "recGbl.h"
#include "devSup.h"
#include "eventRecord.h"
#include "epicsExport.h"
/* Create the dset for devEventSoft */
static long init_record(dbCommon *pcommon);
static long read_event(eventRecord *prec);
eventdset devEventSoft = {
{5, NULL, NULL, init_record, NULL},
read_event
};
epicsExportAddress(dset, devEventSoft);
static long init_record(dbCommon *pcommon)
{
eventRecord *prec = (eventRecord *)pcommon;
if (recGblInitConstantLink(&prec->inp, DBF_STRING, prec->val))
prec->udf = FALSE;
return 0;
}
struct eventvt {
char newEvent[MAX_STRING_SIZE];
epicsTimeStamp *ptime;
};
static long readLocked(struct link *pinp, void *vvt)
{
struct eventvt *pvt = (struct eventvt *) vvt;
long status = dbGetLink(pinp, DBR_STRING, pvt->newEvent, 0, 0);
if (!status && pvt->ptime)
dbGetTimeStamp(pinp, pvt->ptime);
return status;
}
static long read_event(eventRecord *prec)
{
long status;
struct eventvt vt;
if (dbLinkIsConstant(&prec->inp))
return 0;
vt.ptime = (dbLinkIsConstant(&prec->tsel) &&
prec->tse == epicsTimeEventDeviceTime) ? &prec->time : NULL;
status = dbLinkDoLocked(&prec->inp, readLocked, &vt);
if (status == S_db_noLSET)
status = readLocked(&prec->inp, &vt);
if (!status) {
if (strcmp(vt.newEvent, prec->val) != 0) {
strcpy(prec->val, vt.newEvent);
prec->epvt = eventNameToHandle(prec->val);
}
prec->udf = FALSE;
}
return status;
}