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/*
* %CopyrightBegin%
*
* Copyright Ericsson AB 2009-2014. 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__
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include "erl_native_features_config.h"
#include "erl_drv_nif.h"
/* Version history:
** 0.1: R13B03
** 1.0: R13B04
** 2.0: R14A
** 2.1: R14B02 "vm_variant"
** 2.2: R14B03 enif_is_exception
** 2.3: R15 enif_make_reverse_list, enif_is_number
** 2.4: R16 enif_consume_timeslice
** 2.5: First experimental maps API additions (libs of this version is not compatible with any other VM)
** 2.5: R17 Maps API additions
** 2.6: R17 with maps
** R17 dirty schedulers
** 2.7: 17.3 add enif_schedule_nif
** remove enif_schedule_dirty_nif, enif_schedule_dirty_nif_finalizer, enif_dirty_nif_finalizer
** add ErlNifEntry options
** add ErlNifFunc flags
** 2.8: 18.0 add enif_has_pending_exception
*/
#define ERL_NIF_MAJOR_VERSION 2
#define ERL_NIF_MINOR_VERSION 8
/*
* The emulator will refuse to load a nif-lib with a major version
* lower than ERL_NIF_MIN_REQUIRED_MAJOR_VERSION_ON_LOAD. The load
* may however fail if user have not removed use of deprecated
* symbols.
*
* The ERL_NIF_MIN_REQUIRED_MAJOR_VERSION_ON_LOAD have to allow
* loading of nif-libs built at least two major OTP releases
* ago.
*/
#define ERL_NIF_MIN_REQUIRED_MAJOR_VERSION_ON_LOAD 2
#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 __cplusplus
extern "C" {
#endif
#if (defined(__WIN32__) || defined(_WIN32) || defined(_WIN32_))
typedef unsigned __int64 ErlNifUInt64;
typedef __int64 ErlNifSInt64;
#elif SIZEOF_LONG == 8
typedef unsigned long ErlNifUInt64;
typedef long ErlNifSInt64;
#elif SIZEOF_LONG_LONG == 8
typedef unsigned long long ErlNifUInt64;
typedef long long ErlNifSInt64;
#else
#error No 64-bit integer type
#endif
#ifdef HALFWORD_HEAP_EMULATOR
# define ERL_NIF_VM_VARIANT "beam.halfword"
typedef unsigned int ERL_NIF_TERM;
#else
# define ERL_NIF_VM_VARIANT "beam.vanilla"
# if SIZEOF_LONG == SIZEOF_VOID_P
typedef unsigned long ERL_NIF_TERM;
# elif SIZEOF_LONG_LONG == SIZEOF_VOID_P
typedef unsigned long long ERL_NIF_TERM;
# endif
#endif
typedef ERL_NIF_TERM ERL_NIF_UINT;
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[]);
unsigned flags;
}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);
const char* vm_variant;
unsigned options;
}ErlNifEntry;
/* Field bits for ErlNifEntry options */
#define ERL_NIF_DIRTY_NIF_OPTION 1
typedef struct
{
size_t 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*);
typedef enum
{
ERL_NIF_RT_CREATE = 1,
ERL_NIF_RT_TAKEOVER = 2
}ErlNifResourceFlags;
typedef enum
{
ERL_NIF_LATIN1 = 1
}ErlNifCharEncoding;
typedef struct
{
ERL_NIF_TERM pid; /* internal, may change */
}ErlNifPid;
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;
#ifdef ERL_NIF_DIRTY_SCHEDULER_SUPPORT
typedef enum
{
ERL_NIF_DIRTY_JOB_CPU_BOUND = ERL_DRV_DIRTY_JOB_CPU_BOUND,
ERL_NIF_DIRTY_JOB_IO_BOUND = ERL_DRV_DIRTY_JOB_IO_BOUND
}ErlNifDirtyTaskFlags;
#endif
typedef struct /* All fields all internal and may change */
{
ERL_NIF_TERM map;
ERL_NIF_UINT t_limit;
ERL_NIF_UINT idx;
ERL_NIF_TERM *ks;
ERL_NIF_TERM *vs;
void* __spare__[2]; /* for future additions to be ABI compatible (same struct size) */
} ErlNifMapIterator;
typedef enum {
ERL_NIF_MAP_ITERATOR_HEAD = 1,
ERL_NIF_MAP_ITERATOR_TAIL = 2
} ErlNifMapIteratorEntry;
#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) && !defined(STATIC_ERLANG_NIF)
# 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;
# ifdef STATIC_ERLANG_NIF
# define ERL_NIF_INIT_DECL(MODNAME) __declspec(dllexport) ErlNifEntry* MODNAME ## _nif_init(TWinDynNifCallbacks* callbacks)
# else
# define ERL_NIF_INIT_DECL(MODNAME) __declspec(dllexport) ErlNifEntry* nif_init(TWinDynNifCallbacks* callbacks)
# endif
# define ERL_NIF_INIT_BODY memcpy(&WinDynNifCallbacks,callbacks,sizeof(TWinDynNifCallbacks))
#else
# define ERL_NIF_INIT_GLOB
# define ERL_NIF_INIT_BODY
# ifdef STATIC_ERLANG_NIF
# define ERL_NIF_INIT_DECL(MODNAME) ErlNifEntry* MODNAME ## _nif_init(void)
# else
# define ERL_NIF_INIT_DECL(MODNAME) ErlNifEntry* nif_init(void)
# endif
#endif
#ifdef ERL_NIF_DIRTY_SCHEDULER_SUPPORT
# define ERL_NIF_ENTRY_OPTIONS ERL_NIF_DIRTY_NIF_OPTION
#else
# define ERL_NIF_ENTRY_OPTIONS 0
#endif
#ifdef __cplusplus
}
# define ERL_NIF_INIT_PROLOGUE extern "C" {
# define ERL_NIF_INIT_EPILOGUE }
#else
# define ERL_NIF_INIT_PROLOGUE
# define ERL_NIF_INIT_EPILOGUE
#endif
#define ERL_NIF_INIT(NAME, FUNCS, LOAD, RELOAD, UPGRADE, UNLOAD) \
ERL_NIF_INIT_PROLOGUE \
ERL_NIF_INIT_GLOB \
ERL_NIF_INIT_DECL(NAME); \
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_VM_VARIANT, \
ERL_NIF_ENTRY_OPTIONS \
}; \
ERL_NIF_INIT_BODY; \
return &entry; \
} \
ERL_NIF_INIT_EPILOGUE
#if defined(USE_DYNAMIC_TRACE) && (defined(USE_DTRACE) || defined(USE_SYSTEMTAP))
#define HAVE_USE_DTRACE 1
#endif
#ifdef HAVE_USE_DTRACE
ERL_NIF_TERM erl_nif_user_trace_s1(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
ERL_NIF_TERM erl_nif_user_trace_i4s4(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
ERL_NIF_TERM erl_nif_user_trace_n(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
#endif
#endif /* __ERL_NIF_H__ */
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