Annotation of kernel/kernserv/sched_prim.h, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
        !             3:  *
        !             4:  * @APPLE_LICENSE_HEADER_START@
        !             5:  * 
        !             6:  * Portions Copyright (c) 1999 Apple Computer, Inc.  All Rights
        !             7:  * Reserved.  This file contains Original Code and/or Modifications of
        !             8:  * Original Code as defined in and that are subject to the Apple Public
        !             9:  * Source License Version 1.1 (the "License").  You may not use this file
        !            10:  * except in compliance with the License.  Please obtain a copy of the
        !            11:  * License at http://www.apple.com/publicsource and read it before using
        !            12:  * this file.
        !            13:  * 
        !            14:  * The Original Code and all software distributed under the License are
        !            15:  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
        !            16:  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
        !            17:  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
        !            18:  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
        !            19:  * License for the specific language governing rights and limitations
        !            20:  * under the License.
        !            21:  * 
        !            22:  * @APPLE_LICENSE_HEADER_END@
        !            23:  */
        !            24: 
        !            25: /* 
        !            26:  * Mach Operating System
        !            27:  * Copyright (c) 1989 Carnegie-Mellon University
        !            28:  * Copyright (c) 1988 Carnegie-Mellon University
        !            29:  * Copyright (c) 1987 Carnegie-Mellon University
        !            30:  * All rights reserved.  The CMU software License Agreement specifies
        !            31:  * the terms and conditions for use and redistribution.
        !            32:  */
        !            33: /*
        !            34:  *     File:   sched_prim.h
        !            35:  *     Author: David Golub
        !            36:  *
        !            37:  *     Scheduling primitive definitions file
        !            38:  *
        !            39:  */
        !            40: 
        !            41: #ifndef        _KERN_INTERNAL_SCHED_PRIM_H_
        !            42: #define _KERN_INTERNAL_SCHED_PRIM_H_
        !            43: 
        !            44: /*
        !            45:  *     Possible results of assert_wait - returned in
        !            46:  *     current_thread()->wait_result.
        !            47:  */
        !            48: #define THREAD_AWAKENED                0               /* normal wakeup */
        !            49: #define THREAD_TIMED_OUT       1               /* timeout expired */
        !            50: #define THREAD_INTERRUPTED     2               /* interrupted by clear_wait */
        !            51: #define THREAD_SHOULD_TERMINATE        3               /* thread should terminate */
        !            52: #define THREAD_RESTART         4               /* restart operation entirely */
        !            53: 
        !            54: /*
        !            55:  *     Exported interface to sched_prim.c 
        !            56:  */
        !            57: 
        !            58: extern void    sched_init();
        !            59: extern void    assert_wait();
        !            60: extern void    clear_wait();
        !            61: extern void    thread_sleep();
        !            62: extern void    thread_wakeup();                /* for function pointers */
        !            63: extern void    thread_wakeup_prim();
        !            64: extern void    thread_block();
        !            65: extern void    thread_run();
        !            66: extern void    thread_set_timeout();
        !            67: extern void    thread_setrun();
        !            68: extern int     thread_wait_result();
        !            69: 
        !            70: /*
        !            71:  *     Routines defined as macros
        !            72:  */
        !            73: 
        !            74: #define thread_wakeup(x)                                               \
        !            75:                thread_wakeup_prim((x), FALSE, THREAD_AWAKENED)
        !            76: #define thread_wakeup_with_result(x, z)                                        \
        !            77:                thread_wakeup_prim((x), FALSE, (z))
        !            78: #define thread_wakeup_one(x)                                           \
        !            79:                thread_wakeup_prim((x), TRUE, THREAD_AWAKENED)
        !            80: 
        !            81: #endif /* _KERN_INTERNAL_SCHED_PRIM_H_ */
        !            82: 

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