X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/d7515d47fd9d644de5a2366aa214c05ace3c89c2..6428aaa0615924f69cf8050ab15eb1c60dd3fac1:/include/xbt/misc.h diff --git a/include/xbt/misc.h b/include/xbt/misc.h index 9b232f3ee6..5a23b7355a 100644 --- a/include/xbt/misc.h +++ b/include/xbt/misc.h @@ -1,10 +1,7 @@ -/* $Id$ */ +/* xbt.h - Public interface to the xbt (simgrid's toolbox) */ -/* xbt.h - Public interface to the xbt (gras's toolbox) */ - -/* Copyright (c) 2004 Martin Quinson. */ -/* Copyright (c) 2004 Arnaud Legrand. */ -/* All rights reserved. */ +/* Copyright (c) 2004-2014. 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. */ @@ -12,88 +9,296 @@ #ifndef XBT_MISC_H #define XBT_MISC_H +#include + +#include "simgrid_config.h" + +/* Define _GNU_SOURCE for getline, isfinite, etc. */ +#ifndef _GNU_SOURCE + #define _GNU_SOURCE +#endif + /* Attributes are only in recent versions of GCC */ -#if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ > 4) +#if defined(__GNUC__) && (__GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ > 4)) # define _XBT_GNUC_PRINTF( format_idx, arg_idx ) \ - __attribute__((__format__ (__printf__, format_idx, arg_idx))) + __attribute__((__format__ (__printf__, format_idx, arg_idx))) # define _XBT_GNUC_SCANF( format_idx, arg_idx ) \ - __attribute__((__format__ (__scanf__, format_idx, arg_idx))) -# define _XBT_GNUC_FORMAT( arg_idx ) \ - __attribute__((__format_arg__ (arg_idx))) + __attribute__((__format__ (__scanf__, format_idx, arg_idx))) # define _XBT_GNUC_NORETURN __attribute__((__noreturn__)) -# define _XBT_GNUC_UNUSED __attribute__((unused)) +# define _XBT_GNUC_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 -#else /* !__GNUC__ */ +#else /* !__GNUC__ */ # define _XBT_GNUC_PRINTF( format_idx, arg_idx ) # define _XBT_GNUC_SCANF( format_idx, arg_idx ) -# define _XBT_GNUC_FORMAT( arg_idx ) # define _XBT_GNUC_NORETURN # define _XBT_GNUC_UNUSED +# define _XBT_GNUC_CONSTRUCTOR(prio) +# define _XBT_GNUC_DESTRUCTOR(prio) +# define _XBT_NEED_INIT_PRAGMA 1 -#endif /* !__GNUC__ */ +#endif /* !__GNUC__ */ /* inline and __FUNCTION__ are only in GCC when -ansi is off */ #if defined(__GNUC__) && ! defined(__STRICT_ANSI__) # define _XBT_FUNCTION __FUNCTION__ -# define _XBT_INLINE inline #elif (defined(__STDC__) && defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L) -# define _XBT_FUNC__ __func__ /* ISO-C99 compliant */ -# define _XBT_INLINE inline +# define _XBT_FUNCTION __func__ /* ISO-C99 compliant */ #else # define _XBT_FUNCTION "function" -# define _XBT_INLINE #endif -/* The cruft needed to export data in DLLs */ -#ifdef _WIN32 -# ifdef DLL_EXPORT -# define XBT_EXPORT __declspec(dllexport) /* building the DLL */ -# else -# define XBT_EXPORT extern __declspec(dllimport) /* using the DLL */ -# endif +#ifdef DOXYGEN +# define XBT_INLINE #else -# define XBT_EXPORT +# 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 +# elif defined(__BORLANDC__) && !defined(__STRICT_ANSI__) +# define XBT_INLINE __inline +# else +# define XBT_INLINE +# endif +# else +# if defined (__VISUALC__) +# define XBT_INLINE __inline +# else +# define XBT_INLINE inline +# endif +# endif /* __cplusplus */ +#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. + */ +#define _XBT_IF_ONE_ARG(one, more, ...) \ + _XBT_IF_ONE_ARG_(__VA_ARGS__, \ + more, more, more, more, more, more, more, more, \ + more, more, more, more, more, more, more, more, \ + more, more, more, more, more, more, more, more, \ + more, more, more, more, more, more, more, more, \ + more, more, more, more, more, more, more, more, \ + more, more, more, more, more, more, more, more, \ + more, more, more, more, more, more, more, more, \ + more, more, more, more, more, more, more, one) +#define _XBT_IF_ONE_ARG_(a64, a63, a62, a61, a60, a59, a58, a57, \ + a56, a55, a54, a53, a52, a51, a50, a49, \ + a48, a47, a46, a45, a44, a43, a42, a41, \ + a40, a39, a38, a37, a36, a35, a34, a33, \ + a32, a31, a30, a29, a28, a27, a26, a25, \ + a24, a23, a22, a21, a20, a19, a18, a17, \ + 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) + */ + +#ifdef _XBT_WIN32 +# ifndef _XBT_CALL +# define _XBT_CALL __cdecl +# endif +#else +# define _XBT_CALL +#endif + +/* Handle import/export stuff + * + * Rational 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). + * + * 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. + * + * + * Rational of XBT_EXPORT_NO_IMPORT: (windows-only cruft) + * * 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 mecanism 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 cruft) + * * Symbols which must be imported from the DLL, but not explicitely + * exported from it. + * + * * The root log category is already exported, but not imported explicitely + * 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) extern __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) extern 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 + + +/* Link against the DLL */ +#elif (defined(_XBT_WIN32) && !defined(DLL_EXPORT) && !defined(DLL_STATIC)) +# define XBT_PUBLIC(type) extern __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) + + +/* UNIX build */ +#else +# define XBT_PUBLIC(type) extern 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 -#ifndef max -# define max(a, b) (((a) > (b))?(a):(b)) #endif -#ifndef min -# define min(a, b) (((a) < (b))?(a):(b)) + +#ifdef _XBT_WIN32 +#define XBT_INTERNAL +#else +#define XBT_INTERNAL __attribute__((visibility ("hidden"))) +#endif + +#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 -#define XBT_MAX_CHANNEL 10 /* FIXME: killme */ /*! C++ users need love */ #ifndef SG_BEGIN_DECL # ifdef __cplusplus # define SG_BEGIN_DECL() extern "C" { # else -# define SG_BEGIN_DECL() +# define SG_BEGIN_DECL() # endif #endif -/*! C++ users need love */ #ifndef SG_END_DECL # ifdef __cplusplus # define SG_END_DECL() } # else -# define SG_END_DECL() +# define SG_END_DECL() # endif #endif /* End of cruft for C++ */ SG_BEGIN_DECL() -const char *xbt_procname(void); +/** Cache the size of a memory page for the current system. */ +XBT_PUBLIC_DATA(int) xbt_pagesize; + +/** Cache the number of bits of addresses inside a given page, log2(xbt_pagesize). */ +XBT_PUBLIC_DATA(int) xbt_pagebits; + +XBT_PUBLIC(const char *) xbt_procname(void); + +/** Retrieves the version numbers of the used dynamic library (so, DLL or dynlib) , while + SIMGRID_VERSION_MAJOR and friends give the version numbers of the used header files */ +XBT_PUBLIC(void) sg_version(int *major,int *minor,int *patch); + +typedef struct xbt_dynar_s s_xbt_dynar_t, *xbt_dynar_t; + +/** Contains all the parameters we got from the command line */ +XBT_PUBLIC_DATA(xbt_dynar_t) sg_cmdline; + +#define XBT_BACKTRACE_SIZE 10 /* FIXME: better place? Do document */ + +/* snprintf related functions */ +/** @addtogroup XBT_str + * @{ */ +/** @brief print to allocated string (reimplemented when not provided by the system) + * + * The functions asprintf() and vasprintf() are analogues of + * sprintf() and vsprintf(), except that they allocate a string large + * enough to hold the output including the terminating null byte, and + * return a pointer to it via the first parameter. This pointer + * should be passed to free(3) to release the allocated storage when + * it is no longer needed. + */ +#if defined(SIMGRID_NEED_ASPRINTF)||defined(DOXYGEN) +XBT_PUBLIC(int) asprintf(char **ptr, const char *fmt, /*args */ + ...) _XBT_GNUC_PRINTF(2, 3); +#endif +/** @brief print to allocated string (reimplemented when not provided by the system) + * + * See asprintf() + */ +#if defined(SIMGRID_NEED_VASPRINTF)||defined(DOXYGEN) +XBT_PUBLIC(int) vasprintf(char **ptr, const char *fmt, va_list ap); +#endif + +/** @brief print to allocated string + * + * Works just like vasprintf(), but returns a pointer to the newly + * created string, or aborts on error. + */ +XBT_PUBLIC(char *) bvprintf(const char *fmt, va_list ap); +/** @brief print to allocated string + * + * Works just like asprintf(), but returns a pointer to the newly + * created string, or aborts on error. + */ +XBT_PUBLIC(char *) bprintf(const char *fmt, ...) _XBT_GNUC_PRINTF(1, 2); +/** @} */ -#define XBT_BACKTRACE_SIZE 10 /* FIXME: better place? Do document */ - SG_END_DECL() -#endif /* XBT_MISC_H */ +#endif /* XBT_MISC_H */