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authorErlang/OTP <[email protected]>2009-11-20 14:54:40 +0000
committerErlang/OTP <[email protected]>2009-11-20 14:54:40 +0000
commit84adefa331c4159d432d22840663c38f155cd4c1 (patch)
treebff9a9c66adda4df2106dfd0e5c053ab182a12bd /erts/emulator/beam/erl_nif.h
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The R13B03 release.OTP_R13B03
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+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson AB 2009. 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.
+*/
+
+#define ERL_NIF_MAJOR_VERSION 0
+#define ERL_NIF_MINOR_VERSION 1
+
+#include <stdlib.h>
+
+typedef unsigned long ERL_NIF_TERM;
+
+typedef struct
+{
+ const char* name;
+ unsigned arity;
+ void* fptr; //ERL_NIF_TERM (*fptr)(void*, ...);
+}ErlNifFunc;
+
+struct enif_environment_t;
+typedef struct enif_environment_t ErlNifEnv;
+
+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;
+ unsigned char* tmp_alloc;
+ void* ref_bin;
+
+}ErlNifBinary;
+
+#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; \
+}
+