dbAccessDefs.h

/*************************************************************************\
* Copyright (c) 2002 The University of Chicago, 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.
\*************************************************************************/
/* dbAccessDefs.h */

#ifndef INCdbAccessDefsh
#define INCdbAccessDefsh

#include "epicsTypes.h"
#include "epicsTime.h"

#include "dbCoreAPI.h"

#include "dbBase.h"
#include "dbAddr.h"
#include "recSup.h"

#ifdef __cplusplus
extern "C" {
#endif


DBCORE_API extern struct dbBase *pdbbase;
DBCORE_API extern volatile int interruptAccept;
DBCORE_API extern int dbAccessDebugPUTF;

/* The database field and request types are defined in dbFldTypes.h*/
/* Data Base Request Options */
#define DBR_STATUS 0x00000001
#define DBR_AMSG 0x00000002
#define DBR_UNITS 0x00000004
#define DBR_PRECISION 0x00000008
#define DBR_TIME 0x00000010
#define DBR_UTAG 0x00000020
#define DBR_ENUM_STRS 0x00000040
#define DBR_GR_LONG 0x00000080
#define DBR_GR_DOUBLE 0x00000100
#define DBR_CTRL_LONG 0x00000200
#define DBR_CTRL_DOUBLE 0x00000400
#define DBR_AL_LONG 0x00000800
#define DBR_AL_DOUBLE 0x00001000

/**********************************************************************
 * The next page contains macros for defining requests.
 * As an example the following defines a buffer to accept an array
 * of 10 float values + DBR_STATUS and DBR_TIME options
 *
 * struct {
 * DBRstatus
 * DBRtime
 * epicsFloat32 value[10]
 * } buffer;
 *
 * IMPORTANT!! The DBRoptions must be given in the order that they
 * appear in the Data Base Request Options #defines
 *
 * The associated dbGetField call is:
 *
 * long options,number_elements;
 * ...
 * options = DBR_STATUS|DBR_TIME;
 * number_elements = 10;
 * rtnval=dbGetField(paddr,DBR_FLOAT,&buffer,&options,&number_elements);
 *
 * When dbGetField returns:
 * rtnval is error status (0 means success)
 * options has a bit set for each option that was accepted
 * number_elements is actual number of elements obtained
 *
 * The individual items can be referred to by the expressions::
 *
 * buffer.status
 * buffer.severity
 * buffer.err_status
 * buffer.epoch_seconds
 * buffer.nano_seconds
 * buffer.value[i]
 *
 * The following is also a valid declaration:
 *
 * typedef struct {
 * DBRstatus
 * DBRtime
 * epicsFloat32 value[10]
 * } MYBUFFER;
 *
 * With this definition you can give definitions such as the following:
 *
 * MYBUFFER *pbuf1;
 * MYBUFFER buf;
 *************************************************************************/

/* Macros for defining each option */
#define DBRstatus \
 epicsUInt16 status; /* alarm status */\
 epicsUInt16 severity; /* alarm severity*/\
 epicsUInt16 acks; /* alarm ack severity*/\
 epicsUInt16 ackt; /* Acknowledge transient alarms?*/
#define DB_AMSG_SIZE 40
#define DBRamsg \
 char amsg[DB_AMSG_SIZE];
#define DB_UNITS_SIZE 16
#define DBRunits \
 char units[DB_UNITS_SIZE]; /* units */
#define DBRprecision union { \
 long dp; /* number of decimal places*/\
 double unused; /* for alignment */\
 } precision;
 /* precision.dp must be long to match the pointer arguments to
 * RSET->get_precision() and recGblGetPrec(), which it's
 * too late to change now. DBRprecision must be padded to
 * maintain 8-byte alignment. */
#define DBRtime \
 epicsTimeStamp time; /* time stamp*/
#define DBRutag \
 epicsUTag utag;
#define DBRenumStrs \
 epicsUInt32 no_str; /* number of strings*/\
 epicsInt32 padenumStrs; /*padding to force 8 byte align*/\
 char strs[DB_MAX_CHOICES][MAX_STRING_SIZE]; /* string values */
#define DBRgrLong \
 epicsInt32 upper_disp_limit; /*upper limit of graph*/\
 epicsInt32 lower_disp_limit; /*lower limit of graph*/
#define DBRgrDouble \
 epicsFloat64 upper_disp_limit; /*upper limit of graph*/\
 epicsFloat64 lower_disp_limit; /*lower limit of graph*/
#define DBRctrlLong \
 epicsInt32 upper_ctrl_limit; /*upper limit of graph*/\
 epicsInt32 lower_ctrl_limit; /*lower limit of graph*/
#define DBRctrlDouble \
 epicsFloat64 upper_ctrl_limit; /*upper limit of graph*/\
 epicsFloat64 lower_ctrl_limit; /*lower limit of graph*/
#define DBRalLong \
 epicsInt32 upper_alarm_limit;\
 epicsInt32 upper_warning_limit;\
 epicsInt32 lower_warning_limit;\
 epicsInt32 lower_alarm_limit;
#define DBRalDouble \
 epicsFloat64 upper_alarm_limit;\
 epicsFloat64 upper_warning_limit;\
 epicsFloat64 lower_warning_limit;\
 epicsFloat64 lower_alarm_limit;

/* structures for each option type */
struct dbr_status {DBRstatus};
struct dbr_units {DBRunits};
struct dbr_precision {DBRprecision};
struct dbr_time {DBRtime};
struct dbr_enumStrs {DBRenumStrs};
struct dbr_grLong {DBRgrLong};
struct dbr_grDouble {DBRgrDouble};
struct dbr_ctrlLong {DBRctrlLong};
struct dbr_ctrlDouble {DBRctrlDouble};
struct dbr_alLong {DBRalLong};
struct dbr_alDouble {DBRalDouble};
/* sizes for each option structure */
#define dbr_status_size sizeof(struct dbr_status)
#define dbr_units_size sizeof(struct dbr_units)
#define dbr_precision_size sizeof(struct dbr_precision)
#define dbr_time_size sizeof(struct dbr_time)
#define dbr_enumStrs_size sizeof(struct dbr_enumStrs)
#define dbr_grLong_size sizeof(struct dbr_grLong)
#define dbr_grDouble_size sizeof(struct dbr_grDouble)
#define dbr_ctrlLong_size sizeof(struct dbr_ctrlLong)
#define dbr_ctrlDouble_size sizeof(struct dbr_ctrlDouble)
#define dbr_alLong_size sizeof(struct dbr_alLong)
#define dbr_alDouble_size sizeof(struct dbr_alDouble)

#include "errMdef.h"

#define S_db_notFound (M_dbAccess| 1) /*Process Variable Not Found*/
#define S_db_badDbrtype (M_dbAccess| 3) /*Illegal Database Request Type*/
#define S_db_noMod (M_dbAccess| 5) /*Attempt to modify noMod field*/
#define S_db_badLset (M_dbAccess| 7) /*Illegal Lock Set*/
#define S_db_precision (M_dbAccess| 9) /*get precision failed */
#define S_db_onlyOne (M_dbAccess|11) /*Only one element allowed*/
#define S_db_badChoice (M_dbAccess|13) /*Illegal choice*/
#define S_db_badField (M_dbAccess|15) /*Illegal field value*/
#define S_db_lsetLogic (M_dbAccess|17) /*Logic error generating lock sets*/
#define S_db_noLSET (M_dbAccess|21) /*No link support table or entry*/
#define S_db_noRSET (M_dbAccess|31) /*missing record support entry table*/
#define S_db_noSupport (M_dbAccess|33) /*RSET or DSXT routine not defined*/
#define S_db_BadSub (M_dbAccess|35) /*Subroutine not found*/

#define S_db_Pending (M_dbAccess|37) /*Request is pending*/

#define S_db_Blocked (M_dbAccess|39) /*Request is Blocked*/
#define S_db_putDisabled (M_dbAccess|41) /*putFields are disabled*/
#define S_db_badHWaddr (M_dbAccess|43) /*Hardware link type not on INP/OUT*/
#define S_db_bkptSet (M_dbAccess|53) /*Breakpoint already set*/
#define S_db_bkptNotSet (M_dbAccess|55) /*No breakpoint set in record*/
#define S_db_notStopped (M_dbAccess|57) /*Record not stopped*/
#define S_db_errArg (M_dbAccess|59) /*Error in argument*/
#define S_db_bkptLogic (M_dbAccess|61) /*Logic error in breakpoint routine*/
#define S_db_cntSpwn (M_dbAccess|63) /*Cannot spawn dbContTask*/
#define S_db_cntCont (M_dbAccess|65) /*Cannot resume dbContTask*/
#define S_db_noMemory (M_dbAccess|66) /*unable to allocate data structure from pool*/
#define S_db_notInit (M_dbAccess|67) /*Not initialized*/
#define S_db_bufFull (M_dbAccess|68) /*Buffer full*/

struct dbEntry;

DBCORE_API long dbPutSpecial(struct dbAddr *paddr,int pass);
DBCORE_API rset * dbGetRset(const struct dbAddr *paddr);
DBCORE_API long dbPutAttribute(
 const char *recordTypename,const char *name,const char*value);
DBCORE_API int dbIsValueField(const struct dbFldDes *pdbFldDes);
DBCORE_API int dbGetFieldIndex(const struct dbAddr *paddr);
DBCORE_API long dbScanPassive(
 struct dbCommon *pfrom,struct dbCommon *pto);
DBCORE_API long dbProcess(struct dbCommon *precord);
DBCORE_API long dbNameToAddr(const char *pname, struct dbAddr *paddr);

DBCORE_API long dbEntryToAddr(const struct dbEntry *pdbentry,
 struct dbAddr *paddr);

DBCORE_API void dbInitEntryFromAddr(struct dbAddr *paddr,
 struct dbEntry *pdbentry);

DBCORE_API void dbInitEntryFromRecord(struct dbCommon *prec,
 struct dbEntry *pdbentry);

DBCORE_API devSup* dbDTYPtoDevSup(dbRecordType *prdes, int dtyp);
DBCORE_API devSup* dbDSETtoDevSup(dbRecordType *prdes, dset *pdset);
DBCORE_API long dbGetField(
 struct dbAddr *,short dbrType,void *pbuffer,long *options,
 long *nRequest,void *pfl);
DBCORE_API long dbGet(
 struct dbAddr *,short dbrType,void *pbuffer,long *options,
 long *nRequest,void *pfl);
DBCORE_API long dbPutField(
 struct dbAddr *,short dbrType,const void *pbuffer,long nRequest);
DBCORE_API long dbPut(
 struct dbAddr *,short dbrType,const void *pbuffer,long nRequest);

typedef void(*SPC_ASCALLBACK)(struct dbCommon *);
/*dbSpcAsRegisterCallback called by access security */
DBCORE_API void dbSpcAsRegisterCallback(SPC_ASCALLBACK func);
DBCORE_API long dbBufferSize(
 short dbrType,long options,long nRequest);
DBCORE_API long dbValueSize(short dbrType);

/* Hook Routine */

typedef void (*DB_LOAD_RECORDS_HOOK_ROUTINE)(const char* filename,
 const char* substitutions);
DBCORE_API extern DB_LOAD_RECORDS_HOOK_ROUTINE dbLoadRecordsHook;

DBCORE_API int dbLoadDatabase(
 const char *filename, const char *path, const char *substitutions);
DBCORE_API int dbLoadRecords(
 const char* filename, const char* substitutions);

#ifdef __cplusplus
}
#endif

#endif /*INCdbAccessDefsh*/