/*
* %CopyrightBegin%
*
* Copyright Ericsson AB 2009-2010. All Rights Reserved.
*
* The contents of this file are subject to the Erlang Public License,
* Version 1.1, (the "License"); you may not use this file except in
* compliance with the License. You should have received a copy of the
* Erlang Public License along with this software. If not, it can be
* retrieved online at http://www.erlang.org/.
*
* Software distributed under the License is distributed on an "AS IS"
* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
* the License for the specific language governing rights and limitations
* under the License.
*
* %CopyrightEnd%
*/
/* Include file for writers of Native Implemented Functions.
*/
#ifndef __ERL_NIF_H__
#define __ERL_NIF_H__
#include "erl_drv_nif.h"
/* Version history:
** 0.1: R13B03
** 1.0: R13B04
*/
#define ERL_NIF_MAJOR_VERSION 1
#define ERL_NIF_MINOR_VERSION 0
#include <stdlib.h>
#ifdef SIZEOF_CHAR
# define SIZEOF_CHAR_SAVED__ SIZEOF_CHAR
# undef SIZEOF_CHAR
#endif
#ifdef SIZEOF_SHORT
# define SIZEOF_SHORT_SAVED__ SIZEOF_SHORT
# undef SIZEOF_SHORT
#endif
#ifdef SIZEOF_INT
# define SIZEOF_INT_SAVED__ SIZEOF_INT
# undef SIZEOF_INT
#endif
#ifdef SIZEOF_LONG
# define SIZEOF_LONG_SAVED__ SIZEOF_LONG
# undef SIZEOF_LONG
#endif
#ifdef SIZEOF_LONG_LONG
# define SIZEOF_LONG_LONG_SAVED__ SIZEOF_LONG_LONG
# undef SIZEOF_LONG_LONG
#endif
#ifdef HALFWORD_HEAP_EMULATOR
# define HALFWORD_HEAP_EMULATOR_SAVED__ HALFWORD_HEAP_EMULATOR
# undef HALFWORD_HEAP_EMULATOR
#endif
#include "erl_int_sizes_config.h"
#ifdef HALFWORD_HEAP_EMULATOR
typedef unsigned int ERL_NIF_TERM;
#else
typedef unsigned long ERL_NIF_TERM;
#endif
struct enif_environment_t;
typedef struct enif_environment_t ErlNifEnv;
typedef struct
{
const char* name;
unsigned arity;
ERL_NIF_TERM (*fptr)(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
}ErlNifFunc;
typedef struct enif_entry_t
{
int major;
int minor;
const char* name;
int num_of_funcs;
ErlNifFunc* funcs;
int (*load) (ErlNifEnv*, void** priv_data, ERL_NIF_TERM load_info);
int (*reload) (ErlNifEnv*, void** priv_data, ERL_NIF_TERM load_info);
int (*upgrade)(ErlNifEnv*, void** priv_data, void** old_priv_data, ERL_NIF_TERM load_info);
void (*unload) (ErlNifEnv*, void* priv_data);
}ErlNifEntry;
typedef struct
{
unsigned size;
unsigned char* data;
/* Internals (avert your eyes) */
ERL_NIF_TERM bin_term;
void* ref_bin;
}ErlNifBinary;
typedef struct enif_resource_type_t ErlNifResourceType;
typedef void ErlNifResourceDtor(ErlNifEnv*, void*);
enum ErlNifResourceFlags
{
ERL_NIF_RT_CREATE = 1,
ERL_NIF_RT_TAKEOVER = 2
};
typedef enum
{
ERL_NIF_LATIN1 = 1
}ErlNifCharEncoding;
typedef ErlDrvSysInfo ErlNifSysInfo;
typedef struct ErlDrvTid_ *ErlNifTid;
typedef struct ErlDrvMutex_ ErlNifMutex;
typedef struct ErlDrvCond_ ErlNifCond;
typedef struct ErlDrvRWLock_ ErlNifRWLock;
typedef int ErlNifTSDKey;
typedef ErlDrvThreadOpts ErlNifThreadOpts;
#if (defined(__WIN32__) || defined(_WIN32) || defined(_WIN32_))
# define ERL_NIF_API_FUNC_DECL(RET_TYPE, NAME, ARGS) RET_TYPE (*NAME) ARGS
typedef struct {
# include "erl_nif_api_funcs.h"
} TWinDynNifCallbacks;
extern TWinDynNifCallbacks WinDynNifCallbacks;
# undef ERL_NIF_API_FUNC_DECL
#endif
#if (defined(__WIN32__) || defined(_WIN32) || defined(_WIN32_)) && !defined(STATIC_ERLANG_DRIVER)
# define ERL_NIF_API_FUNC_MACRO(NAME) (WinDynNifCallbacks.NAME)
# include "erl_nif_api_funcs.h"
/* note that we have to keep ERL_NIF_API_FUNC_MACRO defined */
#else /* non windows or included from emulator itself */
# define ERL_NIF_API_FUNC_DECL(RET_TYPE, NAME, ARGS) extern RET_TYPE NAME ARGS
# include "erl_nif_api_funcs.h"
# undef ERL_NIF_API_FUNC_DECL
#endif
#if (defined(__WIN32__) || defined(_WIN32) || defined(_WIN32_))
# define ERL_NIF_INIT_GLOB TWinDynNifCallbacks WinDynNifCallbacks;
# define ERL_NIF_INIT_DECL(MODNAME) __declspec(dllexport) ErlNifEntry* nif_init(TWinDynNifCallbacks* callbacks)
# define ERL_NIF_INIT_BODY memcpy(&WinDynNifCallbacks,callbacks,sizeof(TWinDynNifCallbacks))
#else
# define ERL_NIF_INIT_GLOB
# define ERL_NIF_INIT_BODY
# if defined(VXWORKS)
# define ERL_NIF_INIT_DECL(MODNAME) ErlNifEntry* MODNAME ## _init(void)
# else
# define ERL_NIF_INIT_DECL(MODNAME) ErlNifEntry* nif_init(void)
# endif
#endif
#define ERL_NIF_INIT(NAME, FUNCS, LOAD, RELOAD, UPGRADE, UNLOAD) \
ERL_NIF_INIT_GLOB \
ERL_NIF_INIT_DECL(NAME) \
{ \
static ErlNifEntry entry = \
{ \
ERL_NIF_MAJOR_VERSION, \
ERL_NIF_MINOR_VERSION, \
#NAME, \
sizeof(FUNCS) / sizeof(*FUNCS), \
FUNCS, \
LOAD, RELOAD, UPGRADE, UNLOAD \
}; \
ERL_NIF_INIT_BODY; \
return &entry; \
}
#endif /* __ERL_NIF_H__ */
