kern_types.h

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    1 /* 
    2  * Mach Operating System
    3  * Copyright (c) 1993,1992 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  Software.Distribution@CS.CMU.EDU
   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  * HISTORY
   28  * $Log:        kern_types.h,v $
   29  * Revision 2.3  93/11/17  17:13:32  dbg
   30  *      Added macro 'no_return' for the return type of a function that
   31  *      does not return.
   32  *      [93/05/04            dbg]
   33  * 
   34  * Revision 2.2  93/01/14  17:34:51  danner
   35  *      Created.
   36  *      [92/11/23            dbg]
   37  * 
   38  */
   39 
   40 #ifndef _KERN_KERN_TYPES_H_
   41 #define _KERN_KERN_TYPES_H_
   42 
   43 #include <mach/port.h>          /* for mach_port_t */
   44 
   45 /*
   46  *      Common kernel type declarations.
   47  *      These are handles to opaque data structures defined elsewhere.
   48  *
   49  *      These types are recursively included in each other`s definitions.
   50  *      This file exists to export the common declarations to each
   51  *      of the definitions, and to other files that need only the
   52  *      type declarations.
   53  */
   54 
   55 /*
   56  * Task structure, from kern/task.h
   57  */
   58 typedef struct task *           task_t;
   59 #define TASK_NULL               ((task_t) 0)
   60 
   61 typedef mach_port_t *           task_array_t;   /* should be task_t * */
   62 
   63 /*
   64  * Thread structure, from kern/thread.h
   65  */
   66 typedef struct thread *         thread_t;
   67 #define THREAD_NULL             ((thread_t) 0)
   68 
   69 typedef mach_port_t *           thread_array_t; /* should be thread_t * */
   70 
   71 /*
   72  * Processor structure, from kern/processor.h
   73  */
   74 typedef struct processor *      processor_t;
   75 #define PROCESSOR_NULL          ((processor_t) 0)
   76 
   77 /*
   78  * Processor set structure, from kern/processor.h
   79  */
   80 typedef struct processor_set *  processor_set_t;
   81 #define PROCESSOR_SET_NULL      ((processor_set_t) 0)
   82 
   83 /*
   84  *      Return type for a function that does not return.
   85  */
   86 #ifdef  __GNUC__
   87 #define no_return       void __volatile__
   88 #else
   89 #define no_return       void
   90 #endif
   91 
   92 #endif  /* _KERN_KERN_TYPES_H_ */

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FreeBSD/Linux Kernel Cross Reference sys/kern/kern_types.h

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sys/kern/kern_types.h