200 lines
6.9 KiB
C
200 lines
6.9 KiB
C
/*
|
|
*
|
|
Copyright 1989, 1991, 1998 The Open Group
|
|
|
|
Permission to use, copy, modify, distribute, and sell this software and its
|
|
documentation for any purpose is hereby granted without fee, provided that
|
|
the above copyright notice appear in all copies and that both that
|
|
copyright notice and this permission notice appear in supporting
|
|
documentation.
|
|
|
|
The above copyright notice and this permission notice shall be included in
|
|
all copies or substantial portions of the Software.
|
|
|
|
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
|
|
AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
|
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
|
|
|
Except as contained in this notice, the name of The Open Group shall not be
|
|
used in advertising or otherwise to promote the sale, use or other dealings
|
|
in this Software without prior written authorization from The Open Group.
|
|
*
|
|
*/
|
|
|
|
/* Definitions to make function prototypes manageable */
|
|
|
|
#ifndef _XFUNCPROTO_H_
|
|
#define _XFUNCPROTO_H_
|
|
|
|
#ifndef NeedFunctionPrototypes
|
|
#define NeedFunctionPrototypes 1
|
|
#endif /* NeedFunctionPrototypes */
|
|
|
|
#ifndef NeedVarargsPrototypes
|
|
#define NeedVarargsPrototypes 1
|
|
#endif /* NeedVarargsPrototypes */
|
|
|
|
#if NeedFunctionPrototypes
|
|
|
|
#ifndef NeedNestedPrototypes
|
|
#define NeedNestedPrototypes 1
|
|
#endif /* NeedNestedPrototypes */
|
|
|
|
#ifndef _Xconst
|
|
#define _Xconst const
|
|
#endif /* _Xconst */
|
|
|
|
/* Function prototype configuration (see configure for more info) */
|
|
#ifndef NARROWPROTO
|
|
#undef NARROWPROTO
|
|
#endif
|
|
#ifndef FUNCPROTO
|
|
#undef FUNCPROTO
|
|
#endif
|
|
|
|
#ifndef NeedWidePrototypes
|
|
#ifdef NARROWPROTO
|
|
#define NeedWidePrototypes 0
|
|
#else
|
|
#define NeedWidePrototypes 1 /* default to make interropt. easier */
|
|
#endif
|
|
#endif /* NeedWidePrototypes */
|
|
|
|
#endif /* NeedFunctionPrototypes */
|
|
|
|
#ifndef _XFUNCPROTOBEGIN
|
|
#if defined(__cplusplus) || defined(c_plusplus) /* for C++ V2.0 */
|
|
#define _XFUNCPROTOBEGIN extern "C" { /* do not leave open across includes */
|
|
#define _XFUNCPROTOEND }
|
|
#else
|
|
#define _XFUNCPROTOBEGIN
|
|
#define _XFUNCPROTOEND
|
|
#endif
|
|
#endif /* _XFUNCPROTOBEGIN */
|
|
|
|
/* http://clang.llvm.org/docs/LanguageExtensions.html#has-attribute */
|
|
#ifndef __has_attribute
|
|
# define __has_attribute(x) 0 /* Compatibility with non-clang compilers. */
|
|
#endif
|
|
|
|
/* Added in X11R6.9, so available in any version of modular xproto */
|
|
#if __has_attribute(__sentinel__) || (defined(__GNUC__) && (__GNUC__ >= 4))
|
|
# define _X_SENTINEL(x) __attribute__ ((__sentinel__(x)))
|
|
#else
|
|
# define _X_SENTINEL(x)
|
|
#endif /* GNUC >= 4 */
|
|
|
|
/* Added in X11R6.9, so available in any version of modular xproto */
|
|
#if (__has_attribute(visibility) || (defined(__GNUC__) && (__GNUC__ >= 4))) \
|
|
&& !defined(__CYGWIN__) && !defined(__MINGW32__)
|
|
# define _X_EXPORT __attribute__((visibility("default")))
|
|
# define _X_HIDDEN __attribute__((visibility("hidden")))
|
|
# define _X_INTERNAL __attribute__((visibility("internal")))
|
|
#elif defined(__SUNPRO_C) && (__SUNPRO_C >= 0x550)
|
|
# define _X_EXPORT __global
|
|
# define _X_HIDDEN __hidden
|
|
# define _X_INTERNAL __hidden
|
|
#else /* not gcc >= 4 and not Sun Studio >= 8 */
|
|
# define _X_EXPORT
|
|
# define _X_HIDDEN
|
|
# define _X_INTERNAL
|
|
#endif /* GNUC >= 4 */
|
|
|
|
/* Branch prediction hints for individual conditionals */
|
|
/* requires xproto >= 7.0.9 */
|
|
#if defined(__GNUC__) && ((__GNUC__ * 100 + __GNUC_MINOR__) >= 303)
|
|
# define _X_LIKELY(x) __builtin_expect(!!(x), 1)
|
|
# define _X_UNLIKELY(x) __builtin_expect(!!(x), 0)
|
|
#else /* not gcc >= 3.3 */
|
|
# define _X_LIKELY(x) (x)
|
|
# define _X_UNLIKELY(x) (x)
|
|
#endif
|
|
|
|
/* Bulk branch prediction hints via marking error path functions as "cold" */
|
|
/* requires xproto >= 7.0.25 */
|
|
#if __has_attribute(__cold__) || \
|
|
(defined(__GNUC__) && ((__GNUC__ * 100 + __GNUC_MINOR__) >= 403)) /* 4.3+ */
|
|
# define _X_COLD __attribute__((__cold__))
|
|
#else
|
|
# define _X_COLD /* nothing */
|
|
#endif
|
|
|
|
/* Added in X11R6.9, so available in any version of modular xproto */
|
|
#if __has_attribute(deprecated) \
|
|
|| (defined(__GNUC__) && ((__GNUC__ * 100 + __GNUC_MINOR__) >= 301)) \
|
|
|| (defined(__SUNPRO_C) && (__SUNPRO_C >= 0x5130))
|
|
# define _X_DEPRECATED __attribute__((deprecated))
|
|
#else /* not gcc >= 3.1 */
|
|
# define _X_DEPRECATED
|
|
#endif
|
|
|
|
/* requires xproto >= 7.0.17 */
|
|
#if __has_attribute(noreturn) \
|
|
|| (defined(__GNUC__) && ((__GNUC__ * 100 + __GNUC_MINOR__) >= 205)) \
|
|
|| (defined(__SUNPRO_C) && (__SUNPRO_C >= 0x590))
|
|
# define _X_NORETURN __attribute((noreturn))
|
|
#else
|
|
# define _X_NORETURN
|
|
#endif /* GNUC */
|
|
|
|
/* Added in X11R6.9, so available in any version of modular xproto */
|
|
#if __has_attribute(__format__) \
|
|
|| defined(__GNUC__) && ((__GNUC__ * 100 + __GNUC_MINOR__) >= 203)
|
|
# define _X_ATTRIBUTE_PRINTF(x,y) __attribute__((__format__(__printf__,x,y)))
|
|
#else /* not gcc >= 2.3 */
|
|
# define _X_ATTRIBUTE_PRINTF(x,y)
|
|
#endif
|
|
|
|
/* requires xproto >= 7.0.22 - since this uses either gcc or C99 variable
|
|
argument macros, must be only used inside #ifdef _X_NONNULL guards, as
|
|
many legacy X clients are compiled in C89 mode still. */
|
|
#if __has_attribute(nonnull) \
|
|
&& defined(__STDC_VERSION__) && (__STDC_VERSION__ - 0 >= 199901L) /* C99 */
|
|
#define _X_NONNULL(...) __attribute__((nonnull(__VA_ARGS__)))
|
|
#elif __has_attribute(nonnull) \
|
|
|| defined(__GNUC__) && ((__GNUC__ * 100 + __GNUC_MINOR__) >= 303)
|
|
#define _X_NONNULL(args...) __attribute__((nonnull(args)))
|
|
#elif defined(__STDC_VERSION__) && (__STDC_VERSION__ - 0 >= 199901L) /* C99 */
|
|
#define _X_NONNULL(...) /* */
|
|
#endif
|
|
|
|
/* requires xproto >= 7.0.22 */
|
|
#if __has_attribute(__unused__) \
|
|
|| defined(__GNUC__) && ((__GNUC__ * 100 + __GNUC_MINOR__) >= 205)
|
|
#define _X_UNUSED __attribute__((__unused__))
|
|
#else
|
|
#define _X_UNUSED /* */
|
|
#endif
|
|
|
|
/* C99 keyword "inline" or equivalent extensions in pre-C99 compilers */
|
|
/* requires xproto >= 7.0.9
|
|
(introduced in 7.0.8 but didn't support all compilers until 7.0.9) */
|
|
#if defined(inline) /* assume autoconf set it correctly */ || \
|
|
(defined(__STDC_VERSION__) && (__STDC_VERSION__ - 0 >= 199901L)) /* C99 */ || \
|
|
(defined(__SUNPRO_C) && (__SUNPRO_C >= 0x550))
|
|
# define _X_INLINE inline
|
|
#elif defined(__GNUC__) && !defined(__STRICT_ANSI__) /* gcc w/C89+extensions */
|
|
# define _X_INLINE __inline__
|
|
#else
|
|
# define _X_INLINE
|
|
#endif
|
|
|
|
/* C99 keyword "restrict" or equivalent extensions in pre-C99 compilers */
|
|
/* requires xproto >= 7.0.21 */
|
|
#ifndef _X_RESTRICT_KYWD
|
|
# if defined(restrict) /* assume autoconf set it correctly */ || \
|
|
(defined(__STDC_VERSION__) && (__STDC_VERSION__ - 0 >= 199901L) /* C99 */ \
|
|
&& !defined(__cplusplus)) /* Workaround g++ issue on Solaris */
|
|
# define _X_RESTRICT_KYWD restrict
|
|
# elif defined(__GNUC__) && !defined(__STRICT_ANSI__) /* gcc w/C89+extensions */
|
|
# define _X_RESTRICT_KYWD __restrict__
|
|
# else
|
|
# define _X_RESTRICT_KYWD
|
|
# endif
|
|
#endif
|
|
|
|
#endif /* _XFUNCPROTO_H_ */
|