230 lines
7.9 KiB
C++
230 lines
7.9 KiB
C++
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/*
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*
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Copyright 1989, 1991, 1998 The Open Group
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Permission to use, copy, modify, distribute, and sell this software and its
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documentation for any purpose is hereby granted without fee, provided that
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the above copyright notice appear in all copies and that both that
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copyright notice and this permission notice appear in supporting
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documentation.
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
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AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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Except as contained in this notice, the name of The Open Group shall not be
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used in advertising or otherwise to promote the sale, use or other dealings
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in this Software without prior written authorization from The Open Group.
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*
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*/
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/* Definitions to make function prototypes manageable */
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#ifndef _XFUNCPROTO_H_
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#define _XFUNCPROTO_H_
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#ifndef NeedFunctionPrototypes
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#define NeedFunctionPrototypes 1
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#endif /* NeedFunctionPrototypes */
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#ifndef NeedVarargsPrototypes
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#define NeedVarargsPrototypes 1
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#endif /* NeedVarargsPrototypes */
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#if NeedFunctionPrototypes
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#ifndef NeedNestedPrototypes
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#define NeedNestedPrototypes 1
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#endif /* NeedNestedPrototypes */
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#ifndef _Xconst
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#define _Xconst const
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#endif /* _Xconst */
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/* Function prototype configuration (see configure for more info) */
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#if !defined(NARROWPROTO) && \
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(defined(__linux__) || defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__))
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#define NARROWPROTO
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#endif
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#ifndef FUNCPROTO
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#define FUNCPROTO 15
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#endif
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#ifndef NeedWidePrototypes
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#ifdef NARROWPROTO
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#define NeedWidePrototypes 0
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#else
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#define NeedWidePrototypes 1 /* default to make interropt. easier */
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#endif
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#endif /* NeedWidePrototypes */
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#endif /* NeedFunctionPrototypes */
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#ifndef _XFUNCPROTOBEGIN
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#if defined(__cplusplus) || defined(c_plusplus) /* for C++ V2.0 */
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#define _XFUNCPROTOBEGIN extern "C" { /* do not leave open across includes */
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#define _XFUNCPROTOEND }
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#else
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#define _XFUNCPROTOBEGIN
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#define _XFUNCPROTOEND
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#endif
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#endif /* _XFUNCPROTOBEGIN */
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/* http://clang.llvm.org/docs/LanguageExtensions.html#has-attribute */
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#ifndef __has_attribute
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# define __has_attribute(x) 0 /* Compatibility with non-clang compilers. */
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#endif
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#ifndef __has_feature
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# define __has_feature(x) 0 /* Compatibility with non-clang compilers. */
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#endif
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#ifndef __has_extension
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# define __has_extension(x) 0 /* Compatibility with non-clang compilers. */
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#endif
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/* Added in X11R6.9, so available in any version of modular xproto */
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#if __has_attribute(__sentinel__) || (defined(__GNUC__) && (__GNUC__ >= 4))
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# define _X_SENTINEL(x) __attribute__ ((__sentinel__(x)))
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#else
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# define _X_SENTINEL(x)
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#endif /* GNUC >= 4 */
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/* Added in X11R6.9, so available in any version of modular xproto */
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#if (__has_attribute(visibility) || (defined(__GNUC__) && (__GNUC__ >= 4))) \
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&& !defined(__CYGWIN__) && !defined(__MINGW32__)
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# define _X_EXPORT __attribute__((visibility("default")))
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# define _X_HIDDEN __attribute__((visibility("hidden")))
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# define _X_INTERNAL __attribute__((visibility("internal")))
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#elif defined(__SUNPRO_C) && (__SUNPRO_C >= 0x550)
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# define _X_EXPORT __global
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# define _X_HIDDEN __hidden
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# define _X_INTERNAL __hidden
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#else /* not gcc >= 4 and not Sun Studio >= 8 */
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# define _X_EXPORT
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# define _X_HIDDEN
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# define _X_INTERNAL
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#endif /* GNUC >= 4 */
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/* Branch prediction hints for individual conditionals */
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/* requires xproto >= 7.0.9 */
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#if defined(__GNUC__) && ((__GNUC__ * 100 + __GNUC_MINOR__) >= 303)
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# define _X_LIKELY(x) __builtin_expect(!!(x), 1)
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# define _X_UNLIKELY(x) __builtin_expect(!!(x), 0)
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#else /* not gcc >= 3.3 */
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# define _X_LIKELY(x) (x)
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# define _X_UNLIKELY(x) (x)
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#endif
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/* Bulk branch prediction hints via marking error path functions as "cold" */
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/* requires xproto >= 7.0.25 */
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#if __has_attribute(__cold__) || \
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(defined(__GNUC__) && ((__GNUC__ * 100 + __GNUC_MINOR__) >= 403)) /* 4.3+ */
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# define _X_COLD __attribute__((__cold__))
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#else
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# define _X_COLD /* nothing */
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#endif
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/* Added in X11R6.9, so available in any version of modular xproto */
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#if __has_attribute(deprecated) \
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|| (defined(__GNUC__) && ((__GNUC__ * 100 + __GNUC_MINOR__) >= 301)) \
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|| (defined(__SUNPRO_C) && (__SUNPRO_C >= 0x5130))
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# define _X_DEPRECATED __attribute__((deprecated))
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#else /* not gcc >= 3.1 */
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# define _X_DEPRECATED
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#endif
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/* requires xproto >= 7.0.30 */
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#if __has_extension(attribute_deprecated_with_message) || \
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(defined(__GNUC__) && ((__GNUC__ >= 5) || ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 5))))
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# define _X_DEPRECATED_MSG(_msg) __attribute__((deprecated(_msg)))
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#else
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# define _X_DEPRECATED_MSG(_msg) _X_DEPRECATED
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#endif
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/* requires xproto >= 7.0.17 */
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#if __has_attribute(noreturn) \
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|| (defined(__GNUC__) && ((__GNUC__ * 100 + __GNUC_MINOR__) >= 205)) \
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|| (defined(__SUNPRO_C) && (__SUNPRO_C >= 0x590))
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# define _X_NORETURN __attribute((noreturn))
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#else
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# define _X_NORETURN
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#endif /* GNUC */
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/* Added in X11R6.9, so available in any version of modular xproto */
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#if __has_attribute(__format__) \
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|| defined(__GNUC__) && ((__GNUC__ * 100 + __GNUC_MINOR__) >= 203)
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# define _X_ATTRIBUTE_PRINTF(x,y) __attribute__((__format__(__printf__,x,y)))
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#else /* not gcc >= 2.3 */
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# define _X_ATTRIBUTE_PRINTF(x,y)
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#endif
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/* requires xproto >= 7.0.22 - since this uses either gcc or C99 variable
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argument macros, must be only used inside #ifdef _X_NONNULL guards, as
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many legacy X clients are compiled in C89 mode still. */
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#if __has_attribute(nonnull) \
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&& defined(__STDC_VERSION__) && (__STDC_VERSION__ - 0 >= 199901L) /* C99 */
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#define _X_NONNULL(...) __attribute__((nonnull(__VA_ARGS__)))
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#elif __has_attribute(nonnull) \
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|| defined(__GNUC__) && ((__GNUC__ * 100 + __GNUC_MINOR__) >= 303)
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#define _X_NONNULL(args...) __attribute__((nonnull(args)))
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#elif defined(__STDC_VERSION__) && (__STDC_VERSION__ - 0 >= 199901L) /* C99 */
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#define _X_NONNULL(...) /* */
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#endif
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/* requires xproto >= 7.0.22 */
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#if __has_attribute(__unused__) \
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|| defined(__GNUC__) && ((__GNUC__ * 100 + __GNUC_MINOR__) >= 205)
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#define _X_UNUSED __attribute__((__unused__))
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#else
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#define _X_UNUSED /* */
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#endif
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/* C99 keyword "inline" or equivalent extensions in pre-C99 compilers */
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/* requires xproto >= 7.0.9
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(introduced in 7.0.8 but didn't support all compilers until 7.0.9) */
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#if defined(inline) /* assume autoconf set it correctly */ || \
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(defined(__STDC_VERSION__) && (__STDC_VERSION__ - 0 >= 199901L)) /* C99 */ || \
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(defined(__SUNPRO_C) && (__SUNPRO_C >= 0x550))
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# define _X_INLINE inline
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#elif defined(__GNUC__) && !defined(__STRICT_ANSI__) /* gcc w/C89+extensions */
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# define _X_INLINE __inline__
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#else
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# define _X_INLINE
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#endif
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/* C99 keyword "restrict" or equivalent extensions in pre-C99 compilers */
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/* requires xproto >= 7.0.21 */
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#ifndef _X_RESTRICT_KYWD
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# if defined(restrict) /* assume autoconf set it correctly */ || \
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(defined(__STDC_VERSION__) && (__STDC_VERSION__ - 0 >= 199901L) /* C99 */ \
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&& !defined(__cplusplus)) /* Workaround g++ issue on Solaris */
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# define _X_RESTRICT_KYWD restrict
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# elif defined(__GNUC__) && !defined(__STRICT_ANSI__) /* gcc w/C89+extensions */
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# define _X_RESTRICT_KYWD __restrict__
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# else
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# define _X_RESTRICT_KYWD
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# endif
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#endif
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/* requires xproto >= 7.0.30 */
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#if __has_attribute(no_sanitize_thread)
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# define _X_NOTSAN __attribute__((no_sanitize_thread))
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#else
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# define _X_NOTSAN
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#endif
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/* Mark a char array/pointer as not containing a NUL-terminated string */
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/* requires xproto >= 7.0.33 */
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#if __has_attribute(nonstring)
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# define _X_NONSTRING __attribute__((nonstring))
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#else
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# define _X_NONSTRING
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#endif
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#endif /* _XFUNCPROTO_H_ */
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