epicsExport.h

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/*************************************************************************\
* 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.
\*************************************************************************/

#ifndef INC_epicsExport_H
#define INC_epicsExport_H

#define epicsExportSharedSymbols
#include <shareLib.h>

#ifdef __cplusplus
extern "C" {
#endif

typedef void (*REGISTRAR)(void);

#define EPICS_EXPORT_POBJ(typ, obj) pvar_ ## typ ## _ ## obj
#define EPICS_EXPORT_PFUNC(fun) EPICS_EXPORT_POBJ(func, fun)

#define epicsExportAddress(typ, obj) \
    epicsShareExtern typ *EPICS_EXPORT_POBJ(typ,obj); \
    epicsShareDef typ *EPICS_EXPORT_POBJ(typ, obj) = (typ *) (char *) &obj

#define epicsExportRegistrar(fun) \
    epicsShareFunc REGISTRAR EPICS_EXPORT_PFUNC(fun) = (REGISTRAR) &fun

#define epicsRegisterFunction(fun) \
    static void register_func_ ## fun(void) \
    { \
        registryFunctionAdd(#fun, (REGISTRYFUNCTION) fun); \
    } \
    epicsExportRegistrar(register_func_ ## fun)

#ifdef __cplusplus
}
#endif

#endif /* INC_epicsExport_H */