1 /* xbt.h - Public interface to the xbt (simgrid's toolbox) */
3 /* Copyright (c) 2004-2021. The SimGrid Team. All rights reserved. */
5 /* This program is free software; you can redistribute it and/or modify it
6 * under the terms of the license (GNU LGPL) which comes with this package. */
11 /* Define _GNU_SOURCE for getline, isfinite, etc. */
16 /* On MinGW, stdio.h defines __MINGW_PRINTF_FORMAT and __MINGW_SCANF_FORMAT
17 which are the suitable format style (either gnu_printf or ms_printf)
18 depending on which version is available (__USE_MINGW_ANSI_STDIO): */
22 #define XBT_ATTRIB_PRINTF(format_idx, arg_idx) \
23 __attribute__((__format__(__MINGW_PRINTF_FORMAT, (format_idx), (arg_idx))))
24 #define XBT_ATTRIB_SCANF(format_idx, arg_idx) __attribute__((__MINGW_SCANF_FORMAT(__scanf__, (format_idx), (arg_idx))))
26 #define XBT_ATTRIB_PRINTF(format_idx, arg_idx) __attribute__((__format__(__printf__, (format_idx), (arg_idx))))
27 #define XBT_ATTRIB_SCANF(format_idx, arg_idx) __attribute__((__format__(__scanf__, (format_idx), (arg_idx))))
30 #if defined(__cplusplus)
31 #if __cplusplus >= 201103L
32 #define XBT_ATTRIB_NORETURN [[noreturn]]
34 #if __cplusplus >= 201703L
35 #define XBT_ATTRIB_UNUSED [[maybe_unused]]
37 #if __cplusplus >= 201402L
38 #define XBT_ATTRIB_DEPRECATED(mesg) [[deprecated(mesg)]]
40 #elif defined(__STDC_VERSION__)
41 #if __STDC_VERSION__ >= 201112L
42 #define XBT_ATTRIB_NORETURN _Noreturn
46 #ifndef XBT_ATTRIB_NORETURN
47 #define XBT_ATTRIB_NORETURN __attribute__((noreturn))
49 #ifndef XBT_ATTRIB_UNUSED
50 #define XBT_ATTRIB_UNUSED __attribute__((unused))
52 #ifndef XBT_ATTRIB_DEPRECATED
53 #define XBT_ATTRIB_DEPRECATED(mesg) __attribute__((deprecated(mesg)))
56 #define XBT_ATTRIB_DEPRECATED_v328(mesg) \
57 XBT_ATTRIB_DEPRECATED(mesg " (this compatibility wrapper will be dropped after v3.27)")
58 #define XBT_ATTRIB_DEPRECATED_v329(mesg) \
59 XBT_ATTRIB_DEPRECATED(mesg " (this compatibility wrapper will be dropped after v3.28)")
60 #define XBT_ATTRIB_DEPRECATED_v330(mesg) \
61 XBT_ATTRIB_DEPRECATED(mesg " (this compatibility wrapper will be dropped after v3.29)")
62 #define XBT_ATTRIB_DEPRECATED_v331(mesg) \
63 XBT_ATTRIB_DEPRECATED(mesg " (this compatibility wrapper will be dropped after v3.30)")
65 #if !defined(__APPLE__)
66 # define XBT_ATTRIB_CONSTRUCTOR(prio) __attribute__((__constructor__(prio)))
67 # define XBT_ATTRIB_DESTRUCTOR(prio) __attribute__((__destructor__(prio)))
69 # define XBT_ATTRIB_CONSTRUCTOR(prio) __attribute__((__constructor__))
70 # define XBT_ATTRIB_DESTRUCTOR(prio) __attribute__((__destructor__))
73 #ifndef XBT_ALWAYS_INLINE /* defined also in libsosp */
74 # if defined(__GNUC__)
75 # define XBT_ALWAYS_INLINE inline __attribute__ ((always_inline))
77 # define XBT_ALWAYS_INLINE inline
81 /* Stringify argument. */
82 #define _XBT_STRINGIFY(a) #a
84 /* Concatenate arguments. _XBT_CONCAT2 adds a level of indirection over _XBT_CONCAT. */
85 #define _XBT_CONCAT(a, b) a##b
86 #define _XBT_CONCAT2(a, b) _XBT_CONCAT(a, b)
87 #define _XBT_CONCAT3(a, b, c) _XBT_CONCAT2(_XBT_CONCAT2(a, b), c)
88 #define _XBT_CONCAT4(a, b, c, d) _XBT_CONCAT2(_XBT_CONCAT3(a, b, c), d)
91 * Expands to `one' if there is only one argument for the variadic part.
92 * Otherwise, expands to `more'.
93 * Works with up to 63 arguments, which is the maximum mandated by the C99 standard.
95 #define _XBT_IF_ONE_ARG(one, more, ...) \
96 _XBT_IF_ONE_ARG_(__VA_ARGS__, \
97 more, more, more, more, more, more, more, more, \
98 more, more, more, more, more, more, more, more, \
99 more, more, more, more, more, more, more, more, \
100 more, more, more, more, more, more, more, more, \
101 more, more, more, more, more, more, more, more, \
102 more, more, more, more, more, more, more, more, \
103 more, more, more, more, more, more, more, more, \
104 more, more, more, more, more, more, more, one)
105 #define _XBT_IF_ONE_ARG_(a64, a63, a62, a61, a60, a59, a58, a57, \
106 a56, a55, a54, a53, a52, a51, a50, a49, \
107 a48, a47, a46, a45, a44, a43, a42, a41, \
108 a40, a39, a38, a37, a36, a35, a34, a33, \
109 a32, a31, a30, a29, a28, a27, a26, a25, \
110 a24, a23, a22, a21, a20, a19, a18, a17, \
111 a16, a15, a14, a13, a12, a11, a10, a9, \
112 a8, a7, a6, a5, a4, a3, a2, a1, N, ...) N
114 /* Handle import/export stuff
116 * Rationale of XBT_PUBLIC:
117 * * This is for library symbols visible from the application-land.
118 * Basically, any symbols defined in the include/directory must be like this (plus some other globals).
120 * UNIX coders should just think of it as a special way to say "extern".
122 * * If you build the DLL, define the DLL_EXPORT symbol so that all symbols actually get exported by this file.
124 * * If you link your application against the DLL or if you do a UNIX build, don't do anything special. This file
125 * will do the right thing for you by default.
127 * Rationale of XBT_EXPORT_NO_IMPORT: (windows-only)
128 * * Symbols which must be exported in the DLL, but not imported from it.
130 * * This is obviously useful for initialized globals (which cannot be extern or similar).
131 * * This is also used in the log mechanism where a macro creates the variable automatically. When the macro is
132 * called from within SimGrid, the symbol must be exported, but when called from within the client code, it must
133 * not try to retrieve the symbol from the DLL since it's not in there.
135 * Rationale of XBT_IMPORT_NO_EXPORT: (windows-only)
136 * * Symbols which must be imported from the DLL, but not explicitly exported from it.
138 * * The root log category is already exported, but not imported explicitly when creating a subcategory since we
139 * cannot import the parent category to deal with the fact that the parent may be in application space, not DLL
144 #if defined(DLL_EXPORT)
145 # define XBT_PUBLIC __declspec(dllexport)
146 # define XBT_EXPORT_NO_IMPORT __declspec(dllexport)
147 # define XBT_IMPORT_NO_EXPORT
148 # define XBT_PUBLIC_DATA extern __declspec(dllexport)
151 /* Link against the DLL */
152 #elif (defined(_WIN32) && !defined(DLL_EXPORT))
153 # define XBT_PUBLIC __declspec(dllimport)
154 # define XBT_EXPORT_NO_IMPORT
155 # define XBT_IMPORT_NO_EXPORT __declspec(dllimport)
156 # define XBT_PUBLIC_DATA extern __declspec(dllimport)
159 #elif defined(__ELF__)
160 # define XBT_PUBLIC __attribute__((visibility("default")))
161 # define XBT_EXPORT_NO_IMPORT __attribute__((visibility("default")))
162 # define XBT_IMPORT_NO_EXPORT __attribute__((visibility("default")))
163 # define XBT_PUBLIC_DATA extern __attribute__((visibility("default")))
164 # define XBT_PRIVATE __attribute__((visibility("hidden")))
167 # define XBT_PUBLIC /* public */
168 # define XBT_EXPORT_NO_IMPORT
169 # define XBT_IMPORT_NO_EXPORT
170 # define XBT_PUBLIC_DATA extern
171 # define XBT_PRIVATE /** @private */
175 /* C++ users need love */
176 #ifndef SG_BEGIN_DECL
178 # define SG_BEGIN_DECL extern "C" {
180 # define SG_BEGIN_DECL
186 # define SG_END_DECL }
191 /* End of cruft for C++ */