-/* xbt.h - Public interface to the xbt (simgrid's toolbox) */
+/* xbt.h - Public interface to the xbt (simgrid's toolbox) */
-/* Copyright (c) 2004-2015. The SimGrid Team.
- * All rights reserved. */
+/* Copyright (c) 2004-2018. The SimGrid Team. All rights reserved. */
/* This program is free software; you can redistribute it and/or modify it
* under the terms of the license (GNU LGPL) which comes with this package. */
#ifndef XBT_BASE_H
#define XBT_BASE_H
-#include "simgrid_config.h"
-
/* Define _GNU_SOURCE for getline, isfinite, etc. */
#ifndef _GNU_SOURCE
- #define _GNU_SOURCE
+# define _GNU_SOURCE
#endif
-/* Attributes are only in recent versions of GCC */
-#if defined(__GNUC__) && (__GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ > 4))
+// Teach the compiler that some code path is unreacheable:
+#if defined(__has_builtin)
+# if __has_builtin(__builtin_unreachable)
+# define XBT_UNREACHABLE() __builtin_unreachable()
+# else
+# include <stdlib.h>
+# define XBT_UNREACHABLE() abort()
+# endif
+#elif (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 5)
+# define XBT_UNREACHABLE() __builtin_unreachable()
+#else
+# include <stdlib.h>
+# define XBT_UNREACHABLE() abort()
+#endif
/* On MinGW, stdio.h defines __MINGW_PRINTF_FORMAT and __MINGW_SCANF_FORMAT
which are the suitable format style (either gnu_printf or ms_printf)
depending on which version is available (__USE_MINGW_ANSI_STDIO): */
#ifdef __MINGW32__
- #include <stdio.h>
-#endif
+# include <stdio.h>
-#if defined(__MINGW32__) && defined(__MINGW_PRINTF_FORMAT)
- # define XBT_ATTRIB_PRINTF( format_idx, arg_idx ) \
+# define XBT_ATTRIB_PRINTF( format_idx, arg_idx ) \
__attribute__((__format__ (__MINGW_PRINTF_FORMAT, format_idx, arg_idx)))
+# define XBT_ATTRIB_SCANF( format_idx, arg_idx ) \
+ __attribute__((__MINGW_SCANF_FORMAT (__scanf__, format_idx, arg_idx)))
#else
- # define XBT_ATTRIB_PRINTF( format_idx, arg_idx ) \
+# define XBT_ATTRIB_PRINTF( format_idx, arg_idx ) \
__attribute__((__format__ (__printf__, format_idx, arg_idx)))
+# define XBT_ATTRIB_SCANF( format_idx, arg_idx ) \
+ __attribute__((__format__ (__scanf__, format_idx, arg_idx)))
#endif
-#if defined(__MINGW32__) && defined(__MINGW_SCANF_FORMAT)
- # define XBT_ATTRIB_SCANF( format_idx, arg_idx ) \
- __attribute__((__MINGW_SCANF_FORMAT (__scanf__, format_idx, arg_idx)))
-#else
- # define XBT_ATTRIB_SCANF( format_idx, arg_idx ) \
- __attribute__((__format__ (__scanf__, format_idx, arg_idx)))
+#if defined(__cplusplus)
+#if __cplusplus >= 201103L
+#define XBT_ATTRIB_NORETURN [[noreturn]]
+#endif
+#if __cplusplus >= 201703L
+#define XBT_ATTRIB_UNUSED [[maybe_unused]]
+#endif
+#if __cplusplus >= 201402L
+#define XBT_ATTRIB_DEPRECATED(mesg) [[deprecated(mesg)]]
+#endif
+#elif defined(__STDC_VERSION__)
+#if __STDC_VERSION__ >= 201112L
+#define XBT_ATTRIB_NORETURN _Noreturn
+#endif
#endif
-# define XBT_ATTRIB_NORETURN __attribute__((__noreturn__))
-# define XBT_ATTRIB_UNUSED __attribute__((__unused__))
-
-/* Constructor priorities exist since gcc 4.3. Apparently, they are however not
- * supported on Macs. */
-# if (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3)) && !defined(__APPLE__)
-# define _XBT_GNUC_CONSTRUCTOR(prio) __attribute__((__constructor__ (prio)))
-# define _XBT_GNUC_DESTRUCTOR(prio) __attribute__((__destructor__ (prio)))
-# else
-# define _XBT_GNUC_CONSTRUCTOR(prio) __attribute__((__constructor__))
-# define _XBT_GNUC_DESTRUCTOR(prio) __attribute__((__destructor__))
-# endif
-# undef _XBT_NEED_INIT_PRAGMA
-
-#elif defined(_MSC_VER) /* Microsoft Visual Thing */
-# define XBT_ATTRIB_PRINTF( format_idx, arg_idx )
-# define XBT_ATTRIB_SCANF( format_idx, arg_idx )
-# define XBT_ATTRIB_NORETURN __declspec(noreturn)
-# define XBT_ATTRIB_UNUSED
-# define _XBT_GNUC_CONSTRUCTOR(prio)
-# define _XBT_GNUC_DESTRUCTOR(prio)
-# define _XBT_NEED_INIT_PRAGMA 1
-#else
-# define XBT_ATTRIB_PRINTF( format_idx, arg_idx )
-# define XBT_ATTRIB_SCANF( format_idx, arg_idx )
-# define XBT_ATTRIB_NORETURN
-# define XBT_ATTRIB_UNUSED
-# define _XBT_GNUC_CONSTRUCTOR(prio)
-# define _XBT_GNUC_DESTRUCTOR(prio)
-# define _XBT_NEED_INIT_PRAGMA 1
-
-#endif /* gcc or MSVC else */
-
-/* inline and __FUNCTION__ are only in GCC when -ansi is off */
-
-#if defined(__GNUC__) && ! defined(__STRICT_ANSI__)
-# define _XBT_FUNCTION __FUNCTION__
-#elif (defined(__STDC__) && defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L)
-# define _XBT_FUNCTION __func__ /* ISO-C99 compliant */
-#else
-# define _XBT_FUNCTION "function"
+#ifndef XBT_ATTRIB_NORETURN
+#define XBT_ATTRIB_NORETURN __attribute__((noreturn))
+#endif
+#ifndef XBT_ATTRIB_UNUSED
+#define XBT_ATTRIB_UNUSED __attribute__((unused))
#endif
+#ifndef XBT_ATTRIB_DEPRECATED
+#define XBT_ATTRIB_DEPRECATED(mesg) __attribute__((deprecated(mesg)))
+#endif
+
+#define XBT_ATTRIB_DEPRECATED_v322(mesg) XBT_ATTRIB_DEPRECATED(mesg) /* Will be dropped in v3.22 */
+#define XBT_ATTRIB_DEPRECATED_v323(mesg) \
+ XBT_ATTRIB_DEPRECATED(mesg " (this compatibility wrapper will be dropped in v3.23)") /* Will be dropped in v3.23 */
-#ifdef DOXYGEN
-# define XBT_INLINE
+#if !defined(__APPLE__)
+# define XBT_ATTRIB_CONSTRUCTOR(prio) __attribute__((__constructor__(prio)))
+# define XBT_ATTRIB_DESTRUCTOR(prio) __attribute__((__destructor__(prio)))
#else
-# ifndef __cplusplus
-# if defined(__GNUC__) && ! defined(__STRICT_ANSI__)
-# define XBT_INLINE inline
-# elif (defined(__STDC__) && defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L)
-# define XBT_INLINE inline
-# else
-# define XBT_INLINE
-# endif
-# else
-# if defined (_MSC_VER)
-# define XBT_INLINE __inline
-# else
-# define XBT_INLINE inline
-# endif
-# endif /* __cplusplus */
+# define XBT_ATTRIB_CONSTRUCTOR(prio) __attribute__((__constructor__))
+# define XBT_ATTRIB_DESTRUCTOR(prio) __attribute__((__destructor__))
#endif
#if defined(__GNUC__)
-# define XBT_ALWAYS_INLINE inline __attribute__ ((always_inline))
+# define XBT_ALWAYS_INLINE inline __attribute__ ((always_inline))
#else
-# define XBT_ALWAYS_INLINE XBT_INLINE
+# define XBT_ALWAYS_INLINE inline
#endif
#if defined(__GNUC__)
-# define XBT_THREAD_LOCAL __thread
-#elif defined(_MSC_VER)
-# define XBT_THREAD_LOCAL __declspec(thread)
+# define XBT_THREAD_LOCAL __thread
#else
-# define XBT_THREAD_LOCAL No thread local on this architecture
+# define XBT_THREAD_LOCAL No thread local on this architecture
#endif
-/* improvable on gcc (by evaluating arguments only once), but wouldn't be portable */
-#ifdef MIN
-# undef MIN
-#endif
-#define MIN(a,b) ((a)<(b)?(a):(b))
-
-#ifdef MAX
-# undef MAX
-#endif
-#define MAX(a,b) ((a)>(b)?(a):(b))
-
/*
* Expands to `one' if there is only one argument for the variadic part.
* Otherwise, expands to `more'.
- * Works with up to 63 arguments, which is the maximum mandated by the C99
- * standard.
+ * Works with up to 63 arguments, which is the maximum mandated by the C99 standard.
*/
#define _XBT_IF_ONE_ARG(one, more, ...) \
_XBT_IF_ONE_ARG_(__VA_ARGS__, \
a16, a15, a14, a13, a12, a11, a10, a9, \
a8, a7, a6, a5, a4, a3, a2, a1, N, ...) N
-/*
- * Function calling convention (not used for now)
- * http://unixwiz.net/techtips/win32-callconv.html <-- good documentation
- */
-
-#ifdef _XBT_WIN32
-# ifndef _XBT_CALL
-# define _XBT_CALL __cdecl
-# endif
-#else
-# define _XBT_CALL
-#endif
-
/* Handle import/export stuff
*
- * Rational of XBT_PUBLIC:
+ * Rationale of XBT_PUBLIC:
* * This is for library symbols visible from the application-land.
- * Basically, any symbols defined in the include/directory must be
- * like this (plus some other globals).
+ * Basically, any symbols defined in the include/directory must be like this (plus some other globals).
*
* UNIX coders should just think of it as a special way to say "extern".
*
- * * If you build the DLL, define the DLL_EXPORT symbol so that all symbols
- * actually get exported by this file.
-
- * * If you do a static windows compilation, define DLL_STATIC, both when
- * compiling the application files and when compiling the library.
- *
- * * If you link your application against the DLL or if you do a UNIX build,
- * don't do anything special. This file will do the right thing for you
- * by default.
+ * * If you build the DLL, define the DLL_EXPORT symbol so that all symbols actually get exported by this file.
*
+ * * If you link your application against the DLL or if you do a UNIX build, don't do anything special. This file
+ * will do the right thing for you by default.
*
- * Rational of XBT_EXPORT_NO_IMPORT: (windows-only)
+ * Rationale of XBT_EXPORT_NO_IMPORT: (windows-only)
* * Symbols which must be exported in the DLL, but not imported from it.
*
- * * This is obviously useful for initialized globals (which cannot be
- * extern or similar).
- * * This is also used in the log mechanism where a macro creates the
- * variable automatically. When the macro is called from within SimGrid,
- * the symbol must be exported, but when called from within the client
- * code, it must not try to retrieve the symbol from the DLL since it's
- * not in there.
+ * * This is obviously useful for initialized globals (which cannot be extern or similar).
+ * * This is also used in the log mechanism where a macro creates the variable automatically. When the macro is
+ * called from within SimGrid, the symbol must be exported, but when called from within the client code, it must
+ * not try to retrieve the symbol from the DLL since it's not in there.
*
- * Rational of XBT_IMPORT_NO_EXPORT: (windows-only)
- * * Symbols which must be imported from the DLL, but not explicitly
- * exported from it.
+ * Rationale of XBT_IMPORT_NO_EXPORT: (windows-only)
+ * * Symbols which must be imported from the DLL, but not explicitly exported from it.
*
- * * The root log category is already exported, but not imported explicitly
- * when creating a subcategory since we cannot import the parent category
- * to deal with the fact that the parent may be in application space, not
- * DLL space.
+ * * The root log category is already exported, but not imported explicitly when creating a subcategory since we
+ * cannot import the parent category to deal with the fact that the parent may be in application space, not DLL
+ * space.
*/
/* Build the DLL */
#if defined(DLL_EXPORT)
-# define XBT_PUBLIC(type) __declspec(dllexport) type
-# define XBT_EXPORT_NO_IMPORT(type) __declspec(dllexport) type
-# define XBT_IMPORT_NO_EXPORT(type) type
-# define XBT_PUBLIC_DATA(type) extern __declspec(dllexport) type
-# define XBT_PUBLIC_CLASS class __declspec(dllexport)
-
-
-/* Pack everything up statically */
-#elif defined(DLL_STATIC)
-# define XBT_PUBLIC(type) type
-# define XBT_EXPORT_NO_IMPORT(type) type
-# define XBT_IMPORT_NO_EXPORT(type) type
-# define XBT_PUBLIC_DATA(type) extern type
-# define XBT_PUBLIC_CLASS class
-
+# define XBT_PUBLIC __declspec(dllexport)
+# define XBT_EXPORT_NO_IMPORT __declspec(dllexport)
+# define XBT_IMPORT_NO_EXPORT
+# define XBT_PUBLIC_DATA extern __declspec(dllexport)
+# define XBT_PRIVATE
/* Link against the DLL */
-#elif (defined(_XBT_WIN32) && !defined(DLL_EXPORT) && !defined(DLL_STATIC))
-# define XBT_PUBLIC(type) __declspec(dllimport) type
-# define XBT_EXPORT_NO_IMPORT(type) type
-# define XBT_IMPORT_NO_EXPORT(type) __declspec(dllimport) type
-# define XBT_PUBLIC_DATA(type) extern __declspec(dllimport) type
-# define XBT_PUBLIC_CLASS class __declspec(dllimport)
-
+#elif (defined(_WIN32) && !defined(DLL_EXPORT))
+# define XBT_PUBLIC __declspec(dllimport)
+# define XBT_EXPORT_NO_IMPORT
+# define XBT_IMPORT_NO_EXPORT __declspec(dllimport)
+# define XBT_PUBLIC_DATA extern __declspec(dllimport)
+# define XBT_PRIVATE
+
+#elif defined(__ELF__)
+# define XBT_PUBLIC __attribute__((visibility("default")))
+# define XBT_EXPORT_NO_IMPORT __attribute__((visibility("default")))
+# define XBT_IMPORT_NO_EXPORT __attribute__((visibility("default")))
+# define XBT_PUBLIC_DATA extern __attribute__((visibility("default")))
+# define XBT_PRIVATE __attribute__((visibility("hidden")))
-/* UNIX build */
-#elif defined(__ELF__)
-
-# define XBT_PUBLIC(type) type
-# define XBT_EXPORT_NO_IMPORT(type) type
-# define XBT_IMPORT_NO_EXPORT(type) type
-# define XBT_PUBLIC_DATA(type) extern type
-# define XBT_PUBLIC_CLASS class
-
-#else
-# define XBT_PUBLIC(type) __attribute__((visibility("default"))) type
-# define XBT_EXPORT_NO_IMPORT(type) __attribute__((visibility("default"))) type
-# define XBT_IMPORT_NO_EXPORT(type) __attribute__((visibility("default"))) type
-# define XBT_PUBLIC_DATA(type) extern __attribute__((visibility("default"))) type
-# define XBT_PUBLIC_CLASS class __attribute__((visibility("default")))
-
-#endif
-
-#ifdef __ELF__
-#define XBT_PRIVATE __attribute__((visibility("hidden")))
#else
-#define XBT_PRIVATE
-#endif
-
-#ifdef _MSC_VER /* MSVC has no ssize_t, and I fail to use the SSIZE_T declared in BaseTsd.h */
- #if defined(_WIN64)
- typedef __int64 ssize_t;
- #else
- typedef long ssize_t;
- #endif
-
-/* Microsoft wants to improve the code quality blah blah blah */
-/* See: https://msdn.microsoft.com/en-us/library/8ef0s5kh.aspx */
- /* warning C4996: '_strdup': The POSIX name for this item is deprecated. Instead, use the ISO C and C++ conformant name: _strdup. */
- #define _CRT_NONSTDC_NO_WARNINGS
- /* warning C4996: 'fopen': This function or variable may be unsafe. Consider using fopen_s instead. */
- #define _CRT_SECURE_NO_WARNINGS
-#endif
+# define XBT_PUBLIC /* public */
+# define XBT_EXPORT_NO_IMPORT
+# define XBT_IMPORT_NO_EXPORT
+# define XBT_PUBLIC_DATA extern
+# define XBT_PRIVATE /** @private */
-#if !defined (max) && !defined(__cplusplus)
-# define max(a,b) (((a) > (b)) ? (a) : (b))
-#endif
-#if !defined (min) && !defined(__cplusplus)
-# define min(a,b) (((a) < (b)) ? (a) : (b))
#endif
-#define TRUE 1
-#define FALSE 0
-
-/*! C++ users need love */
+/* C++ users need love */
#ifndef SG_BEGIN_DECL
# ifdef __cplusplus
# define SG_BEGIN_DECL() extern "C" {
