155 lines
4.0 KiB
C
155 lines
4.0 KiB
C
/* devBiTestAsyn.c */
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/* base/src/dev $Id$ */
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/* devBiTestAsyn.c - Device Support Routines for testing asynchronous processing*/
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/*
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* Original Author: Bob Dalesio
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* Current Author: Marty Kraimer
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* Date: 6-1-90
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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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* Modification Log:
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* -----------------
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* .01 11-11-91 jba Moved set of alarm stat and sevr to macros
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* .02 01-08-92 jba Added cast in call to wdStart to avoid compile warning msg
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* .03 02-05-92 jba Changed function arguments from paddr to precord
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* .04 03-13-92 jba ANSI C changes
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* .05 04-10-92 jba pact now used to test for asyn processing, not return value
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* .06 04-05-94 mrk ANSI changes to callback routines
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* ...
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*/
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#include <vxWorks.h>
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#include <types.h>
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#include <stdioLib.h>
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#include <wdLib.h>
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#include <memLib.h>
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#include <string.h>
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#include <alarm.h>
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#include <callback.h>
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#include <dbDefs.h>
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#include <dbAccess.h>
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#include <recSup.h>
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#include <devSup.h>
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#include <link.h>
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#include <dbCommon.h>
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#include <biRecord.h>
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/* Create the dset for devBiTestAsyn */
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static long init_record();
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static long read_bi();
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struct {
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long number;
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DEVSUPFUN report;
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DEVSUPFUN init;
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DEVSUPFUN init_record;
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DEVSUPFUN get_ioint_info;
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DEVSUPFUN read_bi;
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DEVSUPFUN special_linconv;
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}devBiTestAsyn={
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6,
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NULL,
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NULL,
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init_record,
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NULL,
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read_bi,
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NULL};
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/* control block for callback*/
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struct callback {
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CALLBACK callback;
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struct dbCommon *precord;
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WDOG_ID wd_id;
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};
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static void myCallback(pcallback)
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struct callback *pcallback;
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{
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struct dbCommon *precord=pcallback->precord;
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struct rset *prset=(struct rset *)(precord->rset);
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dbScanLock(precord);
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(*prset->process)(precord);
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dbScanUnlock(precord);
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}
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static long init_record(pbi)
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struct biRecord *pbi;
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{
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struct callback *pcallback;
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/* bi.inp must be a CONSTANT*/
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switch (pbi->inp.type) {
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case (CONSTANT) :
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pcallback = (struct callback *)(calloc(1,sizeof(struct callback)));
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pbi->dpvt = (void *)pcallback;
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callbackSetCallback(myCallback,&pcallback->callback);
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pcallback->precord = (struct dbCommon *)pbi;
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pcallback->wd_id = wdCreate();
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pbi->val = pbi->inp.value.value;
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pbi->udf = FALSE;
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break;
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default :
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recGblRecordError(S_db_badField,(void *)pbi,
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"devBiTestAsyn (init_record) Illegal INP field");
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return(S_db_badField);
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}
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return(0);
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}
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static long read_bi(pbi)
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struct biRecord *pbi;
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{
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struct callback *pcallback=(struct callback *)(pbi->dpvt);
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int wait_time;
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/* bi.inp must be a CONSTANT*/
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switch (pbi->inp.type) {
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case (CONSTANT) :
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if(pbi->pact) {
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printf("%s Completed\n",pbi->name);
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return(2); /* don't convert */
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} else {
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wait_time = (int)(pbi->disv * vxTicksPerSecond);
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if(wait_time<=0) return(0);
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callbackSetPriority(pbi->prio,&pcallback->callback);
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printf("%s Starting asynchronous processing\n",pbi->name);
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wdStart(pcallback->wd_id,wait_time,(FUNCPTR)callbackRequest,(int)pcallback);
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pbi->pact=TRUE;
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return(0);
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}
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default :
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if(recGblSetSevr(pbi,SOFT_ALARM,INVALID_ALARM)){
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if(pbi->stat!=SOFT_ALARM) {
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recGblRecordError(S_db_badField,(void *)pbi,
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"devBiTestAsyn (read_bi) Illegal INP field");
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}
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}
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}
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return(0);
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}
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