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Annotation of XNU/bsd/sys/cdefs.h, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
        !             3:  *
        !             4:  * @APPLE_LICENSE_HEADER_START@
        !             5:  * 
        !             6:  * The contents of this file constitute Original Code as defined in and
        !             7:  * are subject to the Apple Public Source License Version 1.1 (the
        !             8:  * "License").  You may not use this file except in compliance with the
        !             9:  * License.  Please obtain a copy of the License at
        !            10:  * http://www.apple.com/publicsource and read it before using this file.
        !            11:  * 
        !            12:  * This Original Code and all software distributed under the License are
        !            13:  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
        !            14:  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
        !            15:  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
        !            16:  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
        !            17:  * License for the specific language governing rights and limitations
        !            18:  * under the License.
        !            19:  * 
        !            20:  * @APPLE_LICENSE_HEADER_END@
        !            21:  */
        !            22: /* Copyright 1995 NeXT Computer, Inc. All rights reserved. */
        !            23: /*
        !            24:  * Copyright (c) 1991, 1993
        !            25:  *     The Regents of the University of California.  All rights reserved.
        !            26:  *
        !            27:  * This code is derived from software contributed to Berkeley by
        !            28:  * Berkeley Software Design, Inc.
        !            29:  *
        !            30:  * Redistribution and use in source and binary forms, with or without
        !            31:  * modification, are permitted provided that the following conditions
        !            32:  * are met:
        !            33:  * 1. Redistributions of source code must retain the above copyright
        !            34:  *    notice, this list of conditions and the following disclaimer.
        !            35:  * 2. Redistributions in binary form must reproduce the above copyright
        !            36:  *    notice, this list of conditions and the following disclaimer in the
        !            37:  *    documentation and/or other materials provided with the distribution.
        !            38:  * 3. All advertising materials mentioning features or use of this software
        !            39:  *    must display the following acknowledgement:
        !            40:  *     This product includes software developed by the University of
        !            41:  *     California, Berkeley and its contributors.
        !            42:  * 4. Neither the name of the University nor the names of its contributors
        !            43:  *    may be used to endorse or promote products derived from this software
        !            44:  *    without specific prior written permission.
        !            45:  *
        !            46:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
        !            47:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
        !            48:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
        !            49:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
        !            50:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
        !            51:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
        !            52:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
        !            53:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
        !            54:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
        !            55:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
        !            56:  * SUCH DAMAGE.
        !            57:  *
        !            58:  *     @(#)cdefs.h     8.8 (Berkeley) 1/9/95
        !            59:  */
        !            60: 
        !            61: #ifndef        _CDEFS_H_
        !            62: #define        _CDEFS_H_
        !            63: 
        !            64: #if defined(__cplusplus)
        !            65: #define        __BEGIN_DECLS   extern "C" {
        !            66: #define        __END_DECLS     }
        !            67: #else
        !            68: #define        __BEGIN_DECLS
        !            69: #define        __END_DECLS
        !            70: #endif
        !            71: 
        !            72: /*
        !            73:  * The __CONCAT macro is used to concatenate parts of symbol names, e.g.
        !            74:  * with "#define OLD(foo) __CONCAT(old,foo)", OLD(foo) produces oldfoo.
        !            75:  * The __CONCAT macro is a bit tricky -- make sure you don't put spaces
        !            76:  * in between its arguments.  __CONCAT can also concatenate double-quoted
        !            77:  * strings produced by the __STRING macro, but this only works with ANSI C.
        !            78:  */
        !            79: #if defined(__STDC__) || defined(__cplusplus)
        !            80: #define        __P(protos)     protos          /* full-blown ANSI C */
        !            81: #define        __CONCAT(x,y)   x ## y
        !            82: #define        __STRING(x)     #x
        !            83: 
        !            84: #define        __const         const           /* define reserved names to standard */
        !            85: #define        __signed        signed
        !            86: #define        __volatile      volatile
        !            87: #if defined(__cplusplus)
        !            88: #define        __inline        inline          /* convert to C++ keyword */
        !            89: #else
        !            90: #ifndef __GNUC__
        !            91: #define        __inline                        /* delete GCC keyword */
        !            92: #endif /* !__GNUC__ */
        !            93: #endif /* !__cplusplus */
        !            94: 
        !            95: #else  /* !(__STDC__ || __cplusplus) */
        !            96: #define        __P(protos)     ()              /* traditional C preprocessor */
        !            97: #define        __CONCAT(x,y)   x/**/y
        !            98: #define        __STRING(x)     "x"
        !            99: 
        !           100: #ifndef __GNUC__
        !           101: #define        __const                         /* delete pseudo-ANSI C keywords */
        !           102: #define        __inline
        !           103: #define        __signed
        !           104: #define        __volatile
        !           105: #endif /* !__GNUC__ */
        !           106: 
        !           107: /*
        !           108:  * In non-ANSI C environments, new programs will want ANSI-only C keywords
        !           109:  * deleted from the program and old programs will want them left alone.
        !           110:  * When using a compiler other than gcc, programs using the ANSI C keywords
        !           111:  * const, inline etc. as normal identifiers should define -DNO_ANSI_KEYWORDS.
        !           112:  * When using "gcc -traditional", we assume that this is the intent; if
        !           113:  * __GNUC__ is defined but __STDC__ is not, we leave the new keywords alone.
        !           114:  */
        !           115: #ifndef        NO_ANSI_KEYWORDS
        !           116: #define        const           __const                 /* convert ANSI C keywords */
        !           117: #define        inline          __inline
        !           118: #define        signed          __signed
        !           119: #define        volatile        __volatile
        !           120: #endif /* !NO_ANSI_KEYWORDS */
        !           121: #endif /* !(__STDC__ || __cplusplus) */
        !           122: 
        !           123: /*
        !           124:  * GCC1 and some versions of GCC2 declare dead (non-returning) and
        !           125:  * pure (no side effects) functions using "volatile" and "const";
        !           126:  * unfortunately, these then cause warnings under "-ansi -pedantic".
        !           127:  * GCC2 uses a new, peculiar __attribute__((attrs)) style.  All of
        !           128:  * these work for GNU C++ (modulo a slight glitch in the C++ grammar
        !           129:  * in the distribution version of 2.5.5).
        !           130:  */
        !           131: #if !defined(__GNUC__) || __GNUC__ < 2 || \
        !           132:        (__GNUC__ == 2 && __GNUC_MINOR__ < 5)
        !           133: #define        __attribute__(x)        /* delete __attribute__ if non-gcc or gcc1 */
        !           134: #if defined(__GNUC__) && !defined(__STRICT_ANSI__)
        !           135: #define        __dead          __volatile
        !           136: #define        __pure          __const
        !           137: #endif
        !           138: #endif
        !           139: 
        !           140: /* Delete pseudo-keywords wherever they are not available or needed. */
        !           141: #ifndef __dead
        !           142: #define        __dead
        !           143: #define        __pure
        !           144: #endif
        !           145: 
        !           146: #define __IDSTRING(name,string) \
        !           147:      static const char name[] __attribute__((__unused__)) = string
        !           148: 
        !           149: #ifndef __COPYRIGHT
        !           150: #define __COPYRIGHT(s) __IDSTRING(copyright,s)
        !           151: #endif
        !           152: 
        !           153: #ifndef __RCSID
        !           154: #define __RCSID(s) __IDSTRING(rcsid,s)
        !           155: #endif
        !           156: 
        !           157: #ifndef __SCCSID
        !           158: #define __SCCSID(s) __IDSTRING(sccsid,s)
        !           159: #endif
        !           160: 
        !           161: #ifndef __PROJECT_VERSION
        !           162: #define __PROJECT_VERSION(s) __IDSTRING(project_version,s)
        !           163: #endif
        !           164: 
        !           165: #endif /* !_CDEFS_H_ */

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