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Annotation of OSKit-Mach/kern/macro_help.h, revision 1.1.1.1

1.1       root        1: /* 
                      2:  * Mach Operating System
                      3:  * Copyright (c) 1991,1990,1989,1988 Carnegie Mellon University
                      4:  * All Rights Reserved.
                      5:  * 
                      6:  * Permission to use, copy, modify and distribute this software and its
                      7:  * documentation is hereby granted, provided that both the copyright
                      8:  * notice and this permission notice appear in all copies of the
                      9:  * software, derivative works or modified versions, and any portions
                     10:  * thereof, and that both notices appear in supporting documentation.
                     11:  * 
                     12:  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
                     13:  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
                     14:  * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
                     15:  * 
                     16:  * Carnegie Mellon requests users of this software to return to
                     17:  * 
                     18:  *  Software Distribution Coordinator  or  [email protected]
                     19:  *  School of Computer Science
                     20:  *  Carnegie Mellon University
                     21:  *  Pittsburgh PA 15213-3890
                     22:  * 
                     23:  * any improvements or extensions that they make and grant Carnegie Mellon
                     24:  * the rights to redistribute these changes.
                     25:  */
                     26: /*
                     27:  *     File:   kern/macro_help.h
                     28:  *
                     29:  *     Provide help in making lint-free macro routines
                     30:  *
                     31:  */  
                     32: 
                     33: #ifndef        _KERN_MACRO_HELP_H_
                     34: #define        _KERN_MACRO_HELP_H_
                     35: 
                     36: #if    !defined(MACRO_BEGIN)
                     37: 
                     38: #include <mach/boolean.h>
                     39: 
                     40: #ifdef lint
                     41: boolean_t      NEVER;
                     42: boolean_t      ALWAYS;
                     43: #else  /* lint */
                     44: #define                NEVER           FALSE
                     45: #define                ALWAYS          TRUE
                     46: #endif /* lint */
                     47: 
                     48: #define                MACRO_BEGIN     do {
                     49: #define                MACRO_END       } while (NEVER)
                     50: 
                     51: #define                MACRO_RETURN    if (ALWAYS) return
                     52: 
                     53: #endif /* !MACRO_BEGIN */
                     54: 
                     55: #endif /* _KERN_MACRO_HELP_H_ */

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