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epics-base/src/db/dbAccess.c
Marty Kraimer 3e0445f2ad Fixed many bugs
1996-05-03 14:11:06 +00:00

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/* dbAccess.c */
/* base/src/db $Id$ */
/*
* Original Author: Bob Dalesio
* Current Author: Marty Kraimer
* Date: 11-7-90
*
* Experimental Physics and Industrial Control System (EPICS)
*
* Copyright 1991, the Regents of the University of California,
* and the University of Chicago Board of Governors.
*
* This software was produced under U.S. Government contracts:
* (W-7405-ENG-36) at the Los Alamos National Laboratory,
* and (W-31-109-ENG-38) at Argonne National Laboratory.
*
* Initial development by:
* The Controls and Automation Group (AT-8)
* Ground Test Accelerator
* Accelerator Technology Division
* Los Alamos National Laboratory
*
* Co-developed with
* The Controls and Computing Group
* Accelerator Systems Division
* Advanced Photon Source
* Argonne National Laboratory
*
* Modification Log:
* -----------------
* .01 07-26-91 mrk Allow choices to be retrieved as numeric
* .02 08-13-91 mrk Support db_field_log for dbGetField
* .03 09-30-91 mrk Support for TPRO and DISP
* .04 10-03-91 jba Bug fix in putStringUchar
* .05 11-06-91 jba Moved processing message before record process
* .06 11-26-91 jba Added return to dbGetLink
* Fixed bug in special processing of SPC_MOD (100)
* .07 12-02-91 jba Writing to PROC will always force record process
* .08 02-05-92 jba Changed function arguments from paddr to precord
* .09 03-02-92 jba Added function dbValueSize to replace db_value_size
* .10 04-17-92 rcz put in mrk's dbNameToAddr changes for dbBase
* .11 05-18-92 mrk Changes for database internal structures
* .12 07-16-92 jba Added disable alarm severity, ansi c changes
* .13 08-05-92 jba Removed all references to dbr_field_type
* .14 09-18-92 jba replaced get of disa code with recGblGetLinkValue call
* .15 07-15-93 mrk Changes for new dbStaticLib
* .16 02-02-94 mrk Added dbPutNotify and caching
* .17 02-02-94 mrk Added init code for tsel
* .18 03-18-94 mcn Split dbAccess.c into dbAccess.c and dbLink.c
* .19 03-18-94 mcn Added breakpoint capability
* .20 03-18-94 mcn Added comments/whitespace
* .21 10-20-95 mrk Combined dbAccess and dbLink; Created dbConvert
*/
#include <vxWorks.h>
#include <stdlib.h>
#include <stdarg.h>
#include <stdio.h>
#include <string.h>
#include <taskLib.h>
#include <vxLib.h>
#include <tickLib.h>
#include <fast_lock.h>
#include <cvtFast.h>
#include <alarm.h>
#include <dbDefs.h>
#include <dbBase.h>
#include <dbAccess.h>
#include <dbStaticLib.h>
#include <dbConvert.h>
#include <dbBkpt.h>
#include <dbScan.h>
#include <dbCommon.h>
#include <dbLock.h>
#include <dbFldTypes.h>
#include <dbEvent.h>
#include <db_field_log.h>
#include <errMdef.h>
#include <recSup.h>
#include <recGbl.h>
#include <special.h>
#include <asLib.h>
extern struct dbBase *pdbbase;
extern long lset_stack_not_empty;
static short mapDBFToDBR[DBF_NTYPES] = {
DBR_STRING, DBR_CHAR, DBR_UCHAR, DBR_SHORT, DBR_USHORT,
DBR_LONG, DBR_ULONG, DBR_FLOAT, DBR_DOUBLE,
DBR_ENUM, DBR_ENUM, DBR_ENUM,
DBR_STRING, DBR_STRING, DBR_STRING, DBR_NOACCESS
};
/*
* The number of consecutive attempts that can be made to process an
* active record before a SCAN_ALARM is raised. Active records
* (records with the pact flag set) cannot be processed until
* that flag becomes unset.
*/
#define MAX_LOCK 10
static long putSpecial(DBADDR *paddr,int pass)
{
long int (*pspecial)()=NULL;
struct rset *prset;
dbCommon *precord=(dbCommon *)(paddr->precord);
long status=0;
long special=paddr->special;
prset = dbGetRset(paddr);
if(special<100) { /*global processing*/
if((special==SPC_NOMOD) && (pass==0)) {
status = S_db_noMod;
recGblDbaddrError(status,paddr,"dbPut");
return(status);
}else if(special==SPC_SCAN){
if(pass==0)
scanDelete(precord);
else
scanAdd(precord);
}else if((special==SPC_AS) && (pass==1)) {
asChangeGroup((ASMEMBERPVT *)&precord->asp,precord->asg);
}
}else {
if( prset && (pspecial = (prset->special))) {
status=(*pspecial)(paddr,pass);
if(status) return(status);
} else if(pass==0){
recGblRecSupError(S_db_noSupport,paddr,"dbPut", "special");
return(S_db_noSupport);
}
}
return(0);
}
static void get_enum_strs(DBADDR *paddr,void **ppbuffer,
struct rset *prset,long *options)
{
short field_type=paddr->field_type;
dbFldDes *pdbFldDes = (dbFldDes *)paddr->pfldDes;
dbMenu *pdbMenu;
dbDeviceMenu *pdbDeviceMenu;
char **papChoice;
unsigned long no_str;
char *ptemp;
struct dbr_enumStrs *pdbr_enumStrs=(struct dbr_enumStrs*)(*ppbuffer);
int i;
memset(pdbr_enumStrs,'\0',dbr_enumStrs_size);
switch(field_type) {
case DBF_ENUM:
if( prset && prset->get_enum_strs ) {
(*prset->get_enum_strs)(paddr,pdbr_enumStrs);
} else {
*options = (*options)^DBR_ENUM_STRS;/*Turn off option*/
}
break;
case DBF_MENU:
pdbMenu = (dbMenu *)pdbFldDes->ftPvt;
no_str = pdbMenu->nChoice;
papChoice= pdbMenu->papChoiceValue;
goto choice_common;
case DBF_DEVICE:
pdbDeviceMenu = (dbDeviceMenu *)pdbFldDes->ftPvt;
no_str = pdbDeviceMenu->nChoice;
papChoice = pdbDeviceMenu->papChoice;
goto choice_common;
choice_common:
i = sizeof(pdbr_enumStrs->strs)/
sizeof(pdbr_enumStrs->strs[0]);
if(i<no_str) no_str = i;
pdbr_enumStrs->no_str = no_str;
ptemp = &(pdbr_enumStrs->strs[0][0]);
for (i=0; i<no_str; i++) {
if(papChoice[i]==NULL) *ptemp=0;
else {
strncpy(ptemp,papChoice[i],
sizeof(pdbr_enumStrs->strs[0]));
*(ptemp+sizeof(pdbr_enumStrs->strs[0])-1) = 0;
}
ptemp += sizeof(pdbr_enumStrs->strs[0]);
}
break;
default:
*options = (*options)^DBR_ENUM_STRS;/*Turn off option*/
break;
}
*ppbuffer = ((char *)*ppbuffer) + dbr_enumStrs_size;
return;
}
static void get_graphics(DBADDR *paddr,void **ppbuffer,
struct rset *prset,long *options)
{
struct dbr_grDouble grd;
int got_data=FALSE;
if( prset && prset->get_graphic_double ) {
(*prset->get_graphic_double)(paddr,&grd);
got_data=TRUE;
}
if( (*options) & (DBR_GR_LONG) ) {
char *pbuffer=*ppbuffer;
if(got_data) {
struct dbr_grLong *pgr=(struct dbr_grLong*)pbuffer;
pgr->upper_disp_limit = grd.upper_disp_limit;
pgr->lower_disp_limit = grd.lower_disp_limit;
} else {
memset(pbuffer,'\0',dbr_grLong_size);
*options = (*options) ^ DBR_GR_LONG; /*Turn off option*/
}
*ppbuffer = ((char *)*ppbuffer) + dbr_grLong_size;
}
if( (*options) & (DBR_GR_DOUBLE) ) {
char *pbuffer=*ppbuffer;
if(got_data) {
struct dbr_grDouble *pgr=(struct dbr_grDouble*)pbuffer;
pgr->upper_disp_limit = grd.upper_disp_limit;
pgr->lower_disp_limit = grd.lower_disp_limit;
} else {
memset(pbuffer,'\0',dbr_grDouble_size);
*options = (*options) ^ DBR_GR_DOUBLE; /*Turn off option*/
}
*ppbuffer = ((char *)*ppbuffer) + dbr_grDouble_size;
}
return;
}
static void get_control(DBADDR *paddr,void **ppbuffer,
struct rset *prset,long *options)
{
struct dbr_ctrlDouble ctrld;
int got_data=FALSE;
if( prset && prset->get_control_double ) {
(*prset->get_control_double)(paddr,&ctrld);
got_data=TRUE;
}
if( (*options) & (DBR_CTRL_LONG) ) {
char *pbuffer=*ppbuffer;
if(got_data) {
struct dbr_ctrlLong *pctrl=(struct dbr_ctrlLong*)pbuffer;
pctrl->upper_ctrl_limit = ctrld.upper_ctrl_limit;
pctrl->lower_ctrl_limit = ctrld.lower_ctrl_limit;
} else {
memset(pbuffer,'\0',dbr_ctrlLong_size);
*options = (*options) ^ DBR_CTRL_LONG; /*Turn off option*/
}
*ppbuffer = ((char *)*ppbuffer) + dbr_ctrlLong_size;
}
if( (*options) & (DBR_CTRL_DOUBLE) ) {
char *pbuffer=*ppbuffer;
if(got_data) {
struct dbr_ctrlDouble *pctrl=(struct dbr_ctrlDouble*)pbuffer;
pctrl->upper_ctrl_limit = ctrld.upper_ctrl_limit;
pctrl->lower_ctrl_limit = ctrld.lower_ctrl_limit;
} else {
memset(pbuffer,'\0',dbr_ctrlDouble_size);
*options = (*options) ^ DBR_CTRL_DOUBLE; /*Turn off option*/
}
*ppbuffer = ((char *)*ppbuffer) + dbr_ctrlDouble_size;
}
return;
}
static void get_alarm(DBADDR *paddr,void **ppbuffer,
struct rset *prset,long *options)
{
struct dbr_alDouble ald;
int got_data=FALSE;
if( prset && prset->get_alarm_double ) {
(*prset->get_alarm_double)(paddr,&ald);
got_data=TRUE;
}
if( (*options) & (DBR_AL_LONG) ) {
char *pbuffer=*ppbuffer;
if(got_data) {
struct dbr_alLong *pal=(struct dbr_alLong*)pbuffer;
pal->upper_alarm_limit = ald.upper_alarm_limit;
pal->upper_warning_limit = ald.upper_warning_limit;
pal->lower_warning_limit = ald.lower_warning_limit;
pal->lower_alarm_limit = ald.lower_alarm_limit;
} else {
memset(pbuffer,'\0',dbr_alLong_size);
*options = (*options) ^ DBR_AL_LONG; /*Turn off option*/
}
*ppbuffer = ((char *)*ppbuffer) + dbr_alLong_size;
}
if( (*options) & (DBR_AL_DOUBLE) ) {
char *pbuffer=*ppbuffer;
if(got_data) {
struct dbr_alDouble *pal=(struct dbr_alDouble*)pbuffer;
pal->upper_alarm_limit = ald.upper_alarm_limit;
pal->upper_warning_limit = ald.upper_warning_limit;
pal->lower_warning_limit = ald.lower_warning_limit;
pal->lower_alarm_limit = ald.lower_alarm_limit;
} else {
memset(pbuffer,'\0',dbr_alDouble_size);
*options = (*options) ^ DBR_AL_DOUBLE; /*Turn off option*/
}
*ppbuffer = ((char *)*ppbuffer) + dbr_alDouble_size;
}
return;
}
static void getOptions(DBADDR *paddr,void **poriginal,long *options,void *pflin)
{
db_field_log *pfl= (db_field_log *)pflin;
struct rset *prset;
short field_type=paddr->field_type;
dbCommon *pcommon;
void *pbuffer = *poriginal;
prset=dbGetRset(paddr);
/* Process options */
pcommon = (dbCommon *)(paddr->precord);
if( (*options) & DBR_STATUS ) {
if(pfl!=NULL) {
*((unsigned short *)pbuffer)++ = pfl->stat;
*((unsigned short *)pbuffer)++ = pfl->sevr;
} else {
*((unsigned short *)pbuffer)++ = pcommon->stat;
*((unsigned short *)pbuffer)++ = pcommon->sevr;
}
*((unsigned short *)pbuffer)++ = pcommon->acks;
*((unsigned short *)pbuffer)++ = pcommon->ackt;
}
if( (*options) & DBR_UNITS ) {
if( prset && prset->get_units ){
char * pchar = (char *)pbuffer;
(*prset->get_units)(paddr,pchar);
pchar[DB_UNITS_SIZE-1] = '\0';
} else {
memset(pbuffer,'\0',dbr_units_size);
*options = (*options) ^ DBR_UNITS; /*Turn off DBR_UNITS*/
}
pbuffer = (char *)pbuffer + dbr_units_size;
}
if( (*options) & DBR_PRECISION ) {
struct dbr_precision *pdbr_precision=
(struct dbr_precision *)pbuffer;
if((field_type==DBF_FLOAT || field_type==DBF_DOUBLE)
&& prset && prset->get_precision ){
(*prset->get_precision)(paddr,pbuffer);
if(pdbr_precision->field_width<=0)
pdbr_precision->field_width =
pdbr_precision->precision + 5;
} else {
memset(pbuffer,'\0',dbr_precision_size);
*options = (*options)^DBR_PRECISION; /*Turn off DBR_PRECISION*/
}
pbuffer = (char *)pbuffer + dbr_precision_size;
}
if( (*options) & DBR_TIME ) {
if(pfl!=NULL) {
*((unsigned long *)pbuffer)++ = pfl->time.secPastEpoch;
*((unsigned long *)pbuffer)++ = pfl->time.nsec;
} else {
*((unsigned long *)pbuffer)++ = pcommon->time.secPastEpoch;
*((unsigned long *)pbuffer)++ = pcommon->time.nsec;
}
}
if( (*options) & DBR_ENUM_STRS )
get_enum_strs(paddr,&pbuffer,prset,options);
if( (*options) & (DBR_GR_LONG|DBR_GR_DOUBLE ))
get_graphics(paddr,&pbuffer,prset,options);
if((*options) & (DBR_CTRL_LONG | DBR_CTRL_DOUBLE ))
get_control(paddr,&pbuffer,prset,options);
if((*options) & (DBR_AL_LONG | DBR_AL_DOUBLE ))
get_alarm(paddr,&pbuffer,prset,options);
*poriginal = pbuffer;
}
struct rset *dbGetRset(struct dbAddr *paddr)
{
struct dbFldDes *pfldDes = (struct dbFldDes *)paddr->pfldDes;
if(!pfldDes) return(0);
return(pfldDes->pdbRecDes->prset);
}
int dbIsValueField(struct dbFldDes *pdbFldDes)
{
if(pdbFldDes->pdbRecDes->indvalFlddes == pdbFldDes->indRecDes)
return(TRUE);
else
return(FALSE);
}
int dbGetFieldIndex(struct dbAddr *paddr)
{
return(((struct dbFldDes *)paddr->pfldDes)->indRecDes);
}
/*
* Process a record if its scan field is passive.
* Will notify if processing is complete by callback.
* (only if you are interested in completion)
*/
long dbScanPassive(dbCommon *pfrom, dbCommon *pto)
{
long status;
/* if not passive just return success */
if(pto->scan != 0) return(0);
if(pfrom && pfrom->ppn) dbNotifyAdd(pfrom,pto);
status = dbProcess(pto);
return(status);
}
/*KLUDGE: Following needed so that dbPutLink to PROC field works correctly*/
long dbScanLink(dbCommon *pfrom, dbCommon *pto)
{
long status;
unsigned char pact;
if(pfrom && pfrom->ppn) dbNotifyAdd(pfrom,pto);
pact = pfrom->pact;
pfrom->pact = TRUE;
status = dbProcess(pto);
pfrom->pact = pact;
return(status);
}
/*
* Process the record.
* 1. Check for breakpoints.
* 2. Check the process active flag (PACT).
* 3. Check the disable link.
* 4. Check the RSET (record support entry table) exists.
* 5. Run the process routine specific to the record type.
* 6. Check to see if record contents should be automatically printed.
*/
long dbProcess(dbCommon *precord)
{
struct rset *prset = (struct rset *)precord->rset;
dbRecDes *pdbRecDes = (dbRecDes *)precord->rdes;
unsigned char tpro=precord->tpro;
unsigned long lset;
long status = 0;
static char trace=0;
static unsigned long trace_lset=0;
int set_trace=FALSE;
dbFldDes *pdbFldDes;
lset = dbLockGetLockId(precord);
/*
* Note that it is likely that if any changes are made
* to dbProcess() corresponding changes will have to
* be made in the breakpoint handler.
*/
/* see if there are any stopped records or breakpoints */
if (lset_stack_not_empty) {
/*
* Check to see if the record should be processed
* and activate breakpoint accordingly. If this
* function call returns non-zero, skip record
* support and fall out of dbProcess(). This is
* done so that a dbContTask() can be spawned to
* take over record processing for the lock set
* containing a breakpoint.
*/
if (dbBkpt(precord))
goto all_done;
}
/* check for trace processing*/
if (tpro) {
if (vxTas(&trace)) {
trace_lset = lset;
set_trace = TRUE;
}
}
/* If already active dont process */
if (precord->pact) {
unsigned short monitor_mask;
if (trace && trace_lset==lset)
printf("active: %s\n",precord->name);
/* raise scan alarm after MAX_LOCK times */
if (precord->stat==SCAN_ALARM) goto all_done;
if (precord->lcnt++ !=MAX_LOCK) goto all_done;
if (precord->sevr>=INVALID_ALARM) goto all_done;
recGblSetSevr(precord, SCAN_ALARM, INVALID_ALARM);
monitor_mask = recGblResetAlarms(precord);
monitor_mask |= DBE_VALUE;
pdbFldDes = pdbRecDes->papFldDes[pdbRecDes->indvalFlddes];
db_post_events(precord,
(void *)(((char *)precord) + pdbFldDes->offset),
monitor_mask);
goto all_done;
}
else precord->lcnt = 0;
/*
* Check the record disable link. A record will not be
* processed if the value retrieved through this link
* is equal to constant set in the record's disv field.
*/
status = dbGetLink(&(precord->sdis),DBR_SHORT,&(precord->disa),0,0);
/* if disabled check disable alarm severity and return success */
if (precord->disa == precord->disv) {
if (trace && trace_lset==lset)
printf("disabled: %s\n",precord->name);
/*take care of caching and notifyCompletion*/
precord->rpro = FALSE;
if (precord->ppn) dbNotifyCompletion(precord);
/* raise disable alarm */
if (precord->stat==DISABLE_ALARM) goto all_done;
precord->sevr = precord->diss;
precord->stat = DISABLE_ALARM;
precord->nsev = 0;
precord->nsta = 0;
db_post_events(precord, &precord->stat, DBE_VALUE);
db_post_events(precord, &precord->sevr, DBE_VALUE);
pdbFldDes = pdbRecDes->papFldDes[pdbRecDes->indvalFlddes];
db_post_events(precord,
(void *)(((char *)precord) + pdbFldDes->offset),
DBE_VALUE|DBE_ALARM);
goto all_done;
}
/* locate record processing routine */
/* put this in iocInit() !!! */
if (!(prset=(struct rset *)precord->rset) || !(prset->process)) {
precord->pact=1;/*set pact TRUE so error is issued only once*/
recGblRecordError(S_db_noRSET, (void *)precord, "dbProcess");
status = S_db_noRSET;
if (trace && trace_lset == lset)
printf("failure: %s\n", precord->name);
goto all_done;
}
if (trace && trace_lset==lset) printf("process: %s\n", precord->name);
/* process record */
status = (*prset->process)(precord);
/* Print record's fields if PRINT_MASK set in breakpoint field */
if (lset_stack_not_empty) {
dbPrint(precord);
}
all_done:
if (set_trace) {
trace_lset = 0;
trace = 0;
}
return(status);
}
/*
* Fill out a database structure (*paddr) for
* a record given by the name "pname."
*
* Returns error codes from StaticLib module, not
* from dbAccess.
*/
long dbNameToAddr(char *pname,DBADDR *paddr)
{
DBENTRY dbEntry;
long status=0;
struct rset *prset;
dbFldDes *pflddes;
dbInitEntry(pdbbase,&dbEntry);
if(status = dbFindRecord(&dbEntry,pname)) return(status);
paddr->precord = dbEntry.precnode->precord;
if(!dbEntry.pfield) {
if(status=dbFindField(&dbEntry,"VAL"))return(status);
}
paddr->pfield = dbEntry.pfield;
pflddes = dbEntry.pflddes;
paddr->pfldDes = (void *)pflddes;
paddr->field_type = pflddes->field_type;
paddr->dbr_field_type = mapDBFToDBR[pflddes->field_type];
paddr->field_size = pflddes->size;
paddr->special = pflddes->special;
/*if special is SPC_DBADDR then call cvt_dbaddr */
/*it may change pfield,no_elements,field_type,dbr_field_type,*/
/*field_size,and special*/
paddr->no_elements=1;
if(((paddr->special)==SPC_DBADDR)
&& (prset=dbGetRset(paddr))
&& (prset->cvt_dbaddr)) status = (*prset->cvt_dbaddr)(paddr);
return(status);
}
long dbValueSize(
short dbr_type
)
{
/* sizes for value associated with each DBR request type */
static long size[] = {
MAX_STRING_SIZE, /* STRING */
sizeof(char), /* CHAR */
sizeof(unsigned char), /* UCHAR */
sizeof(short), /* SHORT */
sizeof(unsigned short), /* USHORT */
sizeof(long), /* LONG */
sizeof(unsigned long), /* ULONG */
sizeof(float), /* FLOAT */
sizeof(double), /* DOUBLE */
sizeof(unsigned short)}; /* ENUM */
return(size[dbr_type]);
}
long dbBufferSize(
short dbr_type,
long options,
long no_elements
)
{
long nbytes=0;
nbytes += dbValueSize(dbr_type) * no_elements;
if(options & DBR_STATUS) nbytes += dbr_status_size;
if(options & DBR_UNITS) nbytes += dbr_units_size;
if(options & DBR_PRECISION) nbytes += dbr_precision_size;
if(options & DBR_TIME) nbytes += dbr_time_size;
if(options & DBR_ENUM_STRS) nbytes += dbr_enumStrs_size;
if(options & DBR_GR_LONG) nbytes += dbr_grLong_size;
if(options & DBR_GR_DOUBLE) nbytes += dbr_grDouble_size;
if(options & DBR_CTRL_LONG) nbytes += dbr_ctrlLong_size;
if(options & DBR_CTRL_DOUBLE)nbytes += dbr_ctrlDouble_size;
if(options & DBR_AL_LONG) nbytes += dbr_alLong_size;
if(options & DBR_AL_DOUBLE) nbytes += dbr_alDouble_size;
return(nbytes);
}
long dbGetLinkValue(struct link *plink, short dbrType, void *pbuffer,
long *poptions, long *pnRequest)
{
long status = 0;
if(plink->type==CONSTANT) {
if(poptions) *poptions = 0;
if(pnRequest) *pnRequest = 0;
} else if(plink->type==DB_LINK) {
dbCommon *precord = plink->value.pv_link.precord;
struct pv_link *ppv_link = &(plink->value.pv_link);
DBADDR *paddr = ppv_link->pvt;
/* scan passive records with links that are process passive */
if(ppv_link->pvlMask&pvlOptPP) {
dbCommon *pfrom = paddr->precord;
unsigned char pact;
pact = precord->pact;
precord->pact = TRUE;
status = dbScanPassive(precord,pfrom);
precord->pact = pact;
if(status) return(status);
}
if(ppv_link->pvlMask&pvlOptMS)
recGblSetSevr(precord,LINK_ALARM,paddr->precord->sevr);
if(ppv_link->getCvt && ppv_link->lastGetdbrType==dbrType) {
status = (*ppv_link->getCvt)(paddr->pfield,pbuffer, paddr);
} else {
unsigned short dbfType= paddr->field_type;
long no_elements = paddr->no_elements;
if((dbrType<0) || (dbrType>DBR_ENUM) || (dbfType > DBF_DEVICE)) {
status = S_db_badDbrtype;
recGblRecordError(status,(void *)precord,"GetLinkValue");
recGblSetSevr(precord,LINK_ALARM,INVALID_ALARM);
return(status);
}
/* attempt to make a fast link */
if((!poptions || (*poptions == 0))
&& (no_elements == 1)
&& (!pnRequest || (*pnRequest == 1))) {
ppv_link->getCvt = dbFastGetConvertRoutine[dbfType][dbrType];
status = (*ppv_link->getCvt) (paddr->pfield,pbuffer, paddr);
}else{
status=dbGet(paddr,dbrType,pbuffer,poptions,pnRequest,NULL);
ppv_link->getCvt = 0;
}
}
ppv_link->lastGetdbrType = dbrType;
if(status){
recGblRecordError(status,(void *)precord,"dbGetLinkValue");
recGblSetSevr(precord,LINK_ALARM,INVALID_ALARM);
}
}else if(plink->type==CA_LINK) {
struct dbCommon *precord = plink->value.pv_link.precord;
struct pv_link *pcalink = &(plink->value.pv_link);
unsigned short sevr;
status=dbCaGetLink(plink,dbrType,pbuffer,&sevr,pnRequest);
if(status) {
recGblSetSevr(precord,LINK_ALARM,INVALID_ALARM);
}else if(pcalink->pvlMask&pvlOptMS){
recGblSetSevr(precord,LINK_ALARM,sevr);
}
if(poptions) *poptions = 0;
} else {
status = -1;
errMessage(-1,"dbGetLinkValue: Illegal link type");
taskSuspend(0);
}
return(status);
}
long dbPutLinkValue(struct link *plink,short dbrType,
void *pbuffer,long nRequest)
{
long status=0;
if(plink->type==DB_LINK) {
struct dbCommon *psource = plink->value.pv_link.precord;
struct pv_link *ppv_link= &(plink->value.pv_link);
DBADDR *paddr = (DBADDR*)(ppv_link->pvt);
dbCommon *pdest = paddr->precord;
status=dbPut(paddr,dbrType,pbuffer,nRequest);
if(ppv_link->pvlMask&pvlOptMS)
recGblSetSevr(pdest,LINK_ALARM,psource->sevr);
if(status) return(status);
if((paddr->pfield==(void *)&pdest->proc)
|| (ppv_link->pvlMask&pvlOptPP && pdest->scan==0)) {
/*Note:If ppn then dbNotifyCancel will reprocess*/
/*if dbPutField caused asyn record to process */
/* ask for reprocessing*/
if(!psource->ppn && pdest->putf) pdest->rpro = TRUE;
/* otherwise ask for the record to be processed*/
else status=dbScanLink(psource,pdest);
}
if(status) recGblSetSevr(psource,LINK_ALARM,INVALID_ALARM);
} else if(plink->type==CA_LINK) {
struct dbCommon *psource = plink->value.pv_link.precord;
status = dbCaPutLink(plink,dbrType,pbuffer, nRequest);
if(status < 0)
recGblSetSevr(psource,LINK_ALARM,INVALID_ALARM);
} else {
status=-1;
errMessage(-1,"dbPutLinkValue: Illegal link type");
taskSuspend(0);
}
return(status);
}
long dbGetField( DBADDR *paddr,short dbrType,void *pbuffer,
long *options,long *nRequest,void *pflin)
{
dbCommon *precord = (dbCommon *)(paddr->precord);
long status = 0;
short dbfType = paddr->field_type;
dbScanLock(precord);
if(dbfType>=DBF_INLINK && dbfType<=DBF_FWDLINK) {
DBENTRY dbEntry;
dbFldDes *pfldDes = (dbFldDes *)paddr->pfldDes;
char *rtnString;
char *pbuf = (char *)pbuffer;
if(dbrType!=DBR_STRING) {
status = S_db_badDbrtype;
goto done;
}
if(options && (*options))
getOptions(paddr,(void **)&pbuf,options,pflin);
dbInitEntry(pdbbase,&dbEntry);
if(status = dbFindRecord(&dbEntry,precord->name)) goto done;
if(status = dbFindField(&dbEntry,pfldDes->name)) goto done;
rtnString = dbGetString(&dbEntry);
/*begin kludge for old db_access MAX_STRING_SIZE*/
if(strlen(rtnString)>=MAX_STRING_SIZE) {
strncpy(pbuf,rtnString,MAX_STRING_SIZE-1);
pbuf[MAX_STRING_SIZE-1] = 0;
} else {
strcpy(pbuf,rtnString);
}
/*end kludge for old db_access MAX_STRING_SIZE*/
dbFinishEntry(&dbEntry);
goto done;
} else {
status = dbGet(paddr,dbrType,pbuffer,options,nRequest,pflin);
}
done:
dbScanUnlock(precord);
return(status);
}
long dbGet(DBADDR *paddr,short dbrType,void *pbuffer,long *options,
long *nRequest,void *pflin)
{
db_field_log *pfl= (db_field_log *)pflin;
long no_elements=paddr->no_elements;
long offset;
struct rset *prset;
short field_type=paddr->field_type;
long (*pconvert_routine)();
long status = 0;
char message[80];
prset=dbGetRset(paddr);
if(options && (*options)) {
void *pbuf = pbuffer;
getOptions(paddr,&pbuf,options,pflin);
pbuffer = pbuf;
}
if(nRequest && *nRequest==0) return(0);
/* Check for valid request */
if( INVALID_DB_REQ(dbrType) || (field_type>DBF_DEVICE) ){
sprintf(message,"dbGet - database request type is %d",dbrType);
recGblDbaddrError(S_db_badDbrtype,paddr,message);
return(S_db_badDbrtype);
}
/* check for array */
if( no_elements>1 && prset && (prset->get_array_info) ) {
status = (*prset->get_array_info)(paddr,&no_elements,&offset);
}
else offset=0;
if(offset==0 && (!nRequest || no_elements==1)) {
if(nRequest) *nRequest = 1;
if(pfl!=NULL) {
DBADDR localAddr;
localAddr = *paddr; /*Structure copy*/
localAddr.pfield = (char *)&pfl->field;
status = (*dbFastGetConvertRoutine[field_type][dbrType])
(localAddr.pfield,pbuffer, &localAddr);
} else {
status = (*dbFastGetConvertRoutine[field_type][dbrType])
(paddr->pfield,pbuffer, paddr);
}
} else {
long n;
if(nRequest) {
if(no_elements<(*nRequest)) *nRequest = no_elements;
n = *nRequest;
} else {
n = 1;
}
pconvert_routine=dbGetConvertRoutine[field_type][dbrType];
if(!pconvert_routine) {
sprintf(message,"dbGet - database request type is %d",
dbrType);
recGblDbaddrError(S_db_badDbrtype,paddr,message);
return(S_db_badDbrtype);
}
/* convert database field and place it in the buffer */
if(n<=0) {
;/*do nothing*/
} else if(pfl!=NULL) {
DBADDR localAddr;
localAddr = *paddr; /*Structure copy*/
localAddr.pfield = (char *)&pfl->field;
status=(*pconvert_routine)(&localAddr,pbuffer,n,
no_elements,offset);
} else {
status=(*pconvert_routine)(paddr,pbuffer,n,
no_elements,offset);
}
}
return(status);
}
long dbPutField(DBADDR *paddr,short dbrType,void *pbuffer,long nRequest)
{
long status = 0;
long special=paddr->special;
dbFldDes *pfldDes=(dbFldDes *)(paddr->pfldDes);
dbCommon *precord = (dbCommon *)(paddr->precord);
short dbfType = paddr->field_type;
/*check for putField disabled*/
if(precord->disp) {
if((void *)(&precord->disp) != paddr->pfield) return(0);
}
if(dbfType>=DBF_INLINK && dbfType<=DBF_FWDLINK) {
DBLINK *plink = (DBLINK *)paddr->pfield;
DBENTRY dbEntry;
dbFldDes *pfldDes = (dbFldDes *)paddr->pfldDes;
char buffer[MAX_STRING_SIZE+2];
int len,j;
char *lastblank;
if(dbrType!=DBR_STRING) return(S_db_badDbrtype);
/*begin kludge for old db_access MAX_STRING_SIZE*/
/*Allow M for MS and (N or NM) for NMS */
strcpy(buffer,(char *)pbuffer);
/*Strip trailing blanks*/
len = strlen(buffer);
for(j=len-1; j>0; j--) {
if(buffer[j]==' ')
buffer[j] = 0;
else
break;
}
lastblank = strrchr(buffer,' ');
if(lastblank) {
if(strcmp(lastblank,"M")==0) {
strcpy(lastblank,"MS");
} else {
if((strcmp(lastblank,"N")==0)
|| (strcmp(lastblank,"NM")==0)) {
strcpy(lastblank,"NMS");
}
}
}
/*End kludge for old db_access MAX_STRING_SIZE*/
dbLockSetGblLock();
dbLockSetRecordLock(precord);
if(plink->type == DB_LINK) {
free(plink->value.pv_link.pvt);
plink->value.pv_link.pvt = 0;
plink->type = PV_LINK;
dbLockSetSplit(precord);
} else if(plink->type == CA_LINK) {
dbCaRemoveLink(plink);
}
plink->value.pv_link.getCvt = 0;
plink->value.pv_link.pvlMask = 0;
plink->value.pv_link.lastGetdbrType = 0;
plink->type = PV_LINK;
dbInitEntry(pdbbase,&dbEntry);
if(status=dbFindRecord(&dbEntry,precord->name)) goto done;
if(status=dbFindField(&dbEntry,pfldDes->name)) goto done;
/* check for special processing is required */
if(special) {
status = putSpecial(paddr,0);
if(status) return(status);
}
if(status=dbPutString(&dbEntry,buffer)) goto done;
if(plink->type == PV_LINK) {
DBADDR dbaddr;
if(!(plink->value.pv_link.pvlMask
&(pvlOptCA|pvlOptCP|pvlOptCPP))
&&(dbNameToAddr(plink->value.pv_link.pvname,&dbaddr)==0)){
DBADDR *pdbAddr;
plink->type = DB_LINK;
pdbAddr = dbCalloc(1,sizeof(struct dbAddr));
*pdbAddr = dbaddr; /*structure copy*/;
plink->value.pv_link.precord = precord;
plink->value.pv_link.pvt = pdbAddr;
dbLockSetMerge(precord,pdbAddr->precord);
} else {/*It is a CA link*/
char *pperiod;
plink->type = CA_LINK;
plink->value.pv_link.precord = precord;
dbCaAddLink(plink);
if(pfldDes->field_type==DBF_FWDLINK) {
pperiod = strrchr(plink->value.pv_link.pvname,
'.');
if(pperiod && strstr(pperiod,"PROC"))
plink->value.pv_link.pvlMask |= pvlOptFWD;
}
}
}
if(special) {
status = putSpecial(paddr,1);
if(status) return(status);
}
db_post_events(precord,plink,DBE_VALUE);
dbFinishEntry(&dbEntry);
done:
dbLockSetGblUnlock();
return(status);
}
dbScanLock(precord);
status=dbPut(paddr,dbrType,pbuffer,nRequest);
if(status==0){
if((paddr->pfield==(void *)&precord->proc)
||(pfldDes->process_passive && precord->scan==0
&& dbrType<DBR_PUT_ACKT)) {
if(precord->pact) {
if(precord->tpro)
printf("active: %s\n",precord->name);
precord->rpro = TRUE;
} else {
/*indicate that dbPutField called dbProcess*/
precord->putf = TRUE;
status=dbProcess(precord);
}
}
}
dbScanUnlock(precord);
return(status);
}
static long putAckt(paddr,pbuffer,nRequest,no_elements,offset)
DBADDR *paddr;
unsigned short *pbuffer;
long nRequest;
long no_elements;
long offset;
{
dbCommon *precord=(dbCommon *)(paddr->precord);
if(*pbuffer == precord->ackt) return(0);
precord->ackt = *pbuffer;
db_post_events(precord,&precord->ackt,DBE_VALUE|DBE_ALARM);
if(!precord->ackt && precord->acks>precord->sevr) {
precord->acks = precord->sevr;
db_post_events(precord,&precord->acks,DBE_VALUE|DBE_ALARM);
}
db_post_events(precord,NULL,DBE_ALARM);
return(0);
}
static long putAcks(paddr,pbuffer,nRequest,no_elements,offset)
DBADDR *paddr;
unsigned short *pbuffer;
long nRequest;
long no_elements;
long offset;
{
dbCommon *precord=(dbCommon *)(paddr->precord);
if(*pbuffer >= precord->acks) {
precord->acks = 0;
db_post_events(precord,NULL,DBE_ALARM);
db_post_events(precord,&precord->acks,DBE_VALUE|DBE_ALARM);
}
return(0);
}
long dbPut(DBADDR *paddr,short dbrType,void *pbuffer,long nRequest)
{
long no_elements=paddr->no_elements;
long dummy;
long offset;
struct rset *prset;
dbCommon *precord=(dbCommon *)(paddr->precord);
long status=0;
dbFldDes *pfldDes;
long special=paddr->special;
short field_type=paddr->field_type;
int isValueField;
char message[80];
if(dbrType==DBR_PUT_ACKT && field_type<=DBF_DEVICE) {
status=putAckt(paddr,pbuffer,(long)1,(long)1,(long)0);
return(status);
} else if(dbrType==DBR_PUT_ACKS && field_type<=DBF_DEVICE) {
status=putAcks(paddr,pbuffer,(long)1,(long)1,(long)0);
return(status);
} else if( INVALID_DB_REQ(dbrType) || (field_type>DBF_DEVICE)) {
sprintf(message,"dbPut - database request type is %d",dbrType);
recGblDbaddrError(S_db_badDbrtype,paddr,message);
return(S_db_badDbrtype);
}
prset=dbGetRset(paddr);
/* check for special processing is required */
if(special) {
status = putSpecial(paddr,0);
if(status) return(status);
}
if((no_elements<=1) && (!prset || !(prset->put_array_info))) {
status = (*dbFastPutConvertRoutine[dbrType][field_type])
(pbuffer,paddr->pfield, paddr);
} else {
if(prset && (prset->get_array_info) ) {
status= (*prset->get_array_info)
(paddr,&dummy,&offset);
}
else offset=0;
if(no_elements<(nRequest)) nRequest = no_elements;
status=(*dbPutConvertRoutine[dbrType][field_type])
(paddr,pbuffer,nRequest,no_elements,offset);
/* update array info */
if(prset && (prset->put_array_info) ) {
status= (*prset->put_array_info)
(paddr,nRequest);
}
}
if(status) return(status);
/* check for special processing is required */
if(special) {
status = putSpecial(paddr,1);
if(status) return(status);
}
/* propagate events for this field */
/* if the field is VAL and pvlMask&pvlOptPP is true dont propagate*/
pfldDes = (dbFldDes *)(paddr->pfldDes);
isValueField = dbIsValueField(pfldDes);
if (isValueField) precord->udf=FALSE;
if(precord->mlis.count &&
(!isValueField || (!pfldDes->process_passive)))
db_post_events(precord,paddr->pfield,DBE_VALUE);
return(status);
}