1 /* xbt.h - Public interface to the xbt (simgrid's toolbox) */
3 /* Copyright (c) 2004-2015. The SimGrid Team.
4 * All rights reserved. */
6 /* This program is free software; you can redistribute it and/or modify it
7 * under the terms of the license (GNU LGPL) which comes with this package. */
12 #include "simgrid_config.h"
14 /* Define _GNU_SOURCE for getline, isfinite, etc. */
19 /* On MinGW, stdio.h defines __MINGW_PRINTF_FORMAT and __MINGW_SCANF_FORMAT
20 which are the suitable format style (either gnu_printf or ms_printf)
21 depending on which version is available (__USE_MINGW_ANSI_STDIO): */
25 # define XBT_ATTRIB_PRINTF( format_idx, arg_idx ) \
26 __attribute__((__format__ (__MINGW_PRINTF_FORMAT, format_idx, arg_idx)))
27 # define XBT_ATTRIB_SCANF( format_idx, arg_idx ) \
28 __attribute__((__MINGW_SCANF_FORMAT (__scanf__, format_idx, arg_idx)))
30 # define XBT_ATTRIB_PRINTF( format_idx, arg_idx ) \
31 __attribute__((__format__ (__printf__, format_idx, arg_idx)))
32 # define XBT_ATTRIB_SCANF( format_idx, arg_idx ) \
33 __attribute__((__format__ (__scanf__, format_idx, arg_idx)))
36 # define XBT_ATTRIB_NORETURN __attribute__((__noreturn__))
37 # define XBT_ATTRIB_UNUSED __attribute__((__unused__))
39 /* Constructor priorities exist since gcc 4.3. Apparently, they are however not
40 * supported on Macs. */
41 # if (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3)) && !defined(__APPLE__)
42 # define _XBT_GNUC_CONSTRUCTOR(prio) __attribute__((__constructor__ (prio)))
43 # define _XBT_GNUC_DESTRUCTOR(prio) __attribute__((__destructor__ (prio)))
45 # define _XBT_GNUC_CONSTRUCTOR(prio) __attribute__((__constructor__))
46 # define _XBT_GNUC_DESTRUCTOR(prio) __attribute__((__destructor__))
48 # undef _XBT_NEED_INIT_PRAGMA
51 # define XBT_ALWAYS_INLINE inline __attribute__ ((always_inline))
53 # define XBT_ALWAYS_INLINE inline
57 # define XBT_THREAD_LOCAL __thread
59 # define XBT_THREAD_LOCAL No thread local on this architecture
62 /* improvable on gcc (by evaluating arguments only once), but wouldn't be portable */
66 #define MIN(a,b) ((a)<(b)?(a):(b))
71 #define MAX(a,b) ((a)>(b)?(a):(b))
74 * Expands to `one' if there is only one argument for the variadic part.
75 * Otherwise, expands to `more'.
76 * Works with up to 63 arguments, which is the maximum mandated by the C99 standard.
78 #define _XBT_IF_ONE_ARG(one, more, ...) \
79 _XBT_IF_ONE_ARG_(__VA_ARGS__, \
80 more, more, more, more, more, more, more, more, \
81 more, more, more, more, more, more, more, more, \
82 more, more, more, more, more, more, more, more, \
83 more, more, more, more, more, more, more, more, \
84 more, more, more, more, more, more, more, more, \
85 more, more, more, more, more, more, more, more, \
86 more, more, more, more, more, more, more, more, \
87 more, more, more, more, more, more, more, one)
88 #define _XBT_IF_ONE_ARG_(a64, a63, a62, a61, a60, a59, a58, a57, \
89 a56, a55, a54, a53, a52, a51, a50, a49, \
90 a48, a47, a46, a45, a44, a43, a42, a41, \
91 a40, a39, a38, a37, a36, a35, a34, a33, \
92 a32, a31, a30, a29, a28, a27, a26, a25, \
93 a24, a23, a22, a21, a20, a19, a18, a17, \
94 a16, a15, a14, a13, a12, a11, a10, a9, \
95 a8, a7, a6, a5, a4, a3, a2, a1, N, ...) N
97 /* Handle import/export stuff
99 * Rational of XBT_PUBLIC:
100 * * This is for library symbols visible from the application-land.
101 * Basically, any symbols defined in the include/directory must be like this (plus some other globals).
103 * UNIX coders should just think of it as a special way to say "extern".
105 * * If you build the DLL, define the DLL_EXPORT symbol so that all symbols actually get exported by this file.
107 * * If you link your application against the DLL or if you do a UNIX build, don't do anything special. This file
108 * will do the right thing for you by default.
110 * Rational of XBT_EXPORT_NO_IMPORT: (windows-only)
111 * * Symbols which must be exported in the DLL, but not imported from it.
113 * * This is obviously useful for initialized globals (which cannot be extern or similar).
114 * * This is also used in the log mechanism where a macro creates the variable automatically. When the macro is
115 * called from within SimGrid, the symbol must be exported, but when called from within the client code, it must
116 * not try to retrieve the symbol from the DLL since it's not in there.
118 * Rational of XBT_IMPORT_NO_EXPORT: (windows-only)
119 * * Symbols which must be imported from the DLL, but not explicitly exported from it.
121 * * The root log category is already exported, but not imported explicitly when creating a subcategory since we
122 * cannot import the parent category to deal with the fact that the parent may be in application space, not DLL
127 #if defined(DLL_EXPORT)
128 # define XBT_PUBLIC(type) __declspec(dllexport) type
129 # define XBT_EXPORT_NO_IMPORT(type) __declspec(dllexport) type
130 # define XBT_IMPORT_NO_EXPORT(type) type
131 # define XBT_PUBLIC_DATA(type) extern __declspec(dllexport) type
132 # define XBT_PUBLIC_CLASS class __declspec(dllexport)
135 /* Link against the DLL */
136 #elif (defined(_WIN32) && !defined(DLL_EXPORT))
137 # define XBT_PUBLIC(type) __declspec(dllimport) type
138 # define XBT_EXPORT_NO_IMPORT(type) type
139 # define XBT_IMPORT_NO_EXPORT(type) __declspec(dllimport) type
140 # define XBT_PUBLIC_DATA(type) extern __declspec(dllimport) type
141 # define XBT_PUBLIC_CLASS class __declspec(dllimport)
144 #elif defined(__ELF__)
145 # define XBT_PUBLIC(type) __attribute__((visibility("default"))) type
146 # define XBT_EXPORT_NO_IMPORT(type) __attribute__((visibility("default"))) type
147 # define XBT_IMPORT_NO_EXPORT(type) __attribute__((visibility("default"))) type
148 # define XBT_PUBLIC_DATA(type) extern __attribute__((visibility("default"))) type
149 # define XBT_PUBLIC_CLASS class __attribute__((visibility("default")))
150 # define XBT_PRIVATE __attribute__((visibility("hidden")))
153 # define XBT_PUBLIC(type) type
154 # define XBT_EXPORT_NO_IMPORT(type) type
155 # define XBT_IMPORT_NO_EXPORT(type) type
156 # define XBT_PUBLIC_DATA(type) extern type
157 # define XBT_PUBLIC_CLASS class
165 /*! C++ users need love */
166 #ifndef SG_BEGIN_DECL
168 # define SG_BEGIN_DECL() extern "C" {
170 # define SG_BEGIN_DECL()
176 # define SG_END_DECL() }
178 # define SG_END_DECL()
181 /* End of cruft for C++ */