The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]

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

Version: -  FREEBSD  -  FREEBSD-12-STABLE  -  FREEBSD-12-0  -  FREEBSD-11-STABLE  -  FREEBSD-11-2  -  FREEBSD-11-1  -  FREEBSD-11-0  -  FREEBSD-10-STABLE  -  FREEBSD-10-4  -  FREEBSD-10-3  -  FREEBSD-10-2  -  FREEBSD-10-1  -  FREEBSD-10-0  -  FREEBSD-9-STABLE  -  FREEBSD-9-3  -  FREEBSD-9-2  -  FREEBSD-9-1  -  FREEBSD-9-0  -  FREEBSD-8-STABLE  -  FREEBSD-8-4  -  FREEBSD-8-3  -  FREEBSD-8-2  -  FREEBSD-8-1  -  FREEBSD-8-0  -  FREEBSD-7-STABLE  -  FREEBSD-7-4  -  FREEBSD-7-3  -  FREEBSD-7-2  -  FREEBSD-7-1  -  FREEBSD-7-0  -  FREEBSD-6-STABLE  -  FREEBSD-6-4  -  FREEBSD-6-3  -  FREEBSD-6-2  -  FREEBSD-6-1  -  FREEBSD-6-0  -  FREEBSD-5-STABLE  -  FREEBSD-5-5  -  FREEBSD-5-4  -  FREEBSD-5-3  -  FREEBSD-5-2  -  FREEBSD-5-1  -  FREEBSD-5-0  -  FREEBSD-4-STABLE  -  FREEBSD-3-STABLE  -  FREEBSD22  -  linux-2.6  -  linux-2.4.22  -  MK83  -  MK84  -  PLAN9  -  DFBSD  -  NETBSD  -  NETBSD5  -  NETBSD4  -  NETBSD3  -  NETBSD20  -  OPENBSD  -  xnu-517  -  xnu-792  -  xnu-792.6.70  -  xnu-1228  -  xnu-1456.1.26  -  xnu-1699.24.8  -  xnu-2050.18.24  -  OPENSOLARIS  -  minix-3-1-1 
SearchContext: -  none  -  3  -  10 

    1 /* 
    2  * Mach Operating System
    3  * Copyright (c) 1992,1991,1990,1989,1988,1987 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:        sched_prim.h,v $
   29  * Revision 2.10  93/03/09  10:55:24  danner
   30  *      A small GNUism to signify thread_syscall_return does not return.
   31  *      [93/03/06            af]
   32  * 
   33  * Revision 2.9  93/01/14  17:36:24  danner
   34  *      Added function prototypes.
   35  *      [92/11/11            dbg]
   36  * 
   37  * Revision 2.8  92/01/03  20:14:49  dbg
   38  *      Removed THREAD_SHOULD_TERMINATE (again).
   39  *      [91/12/19            dbg]
   40  * 
   41  * Revision 2.7  91/05/18  14:33:14  rpd
   42  *      Added recompute_priorities.
   43  *      [91/03/31            rpd]
   44  * 
   45  * Revision 2.6  91/05/14  16:46:40  mrt
   46  *      Correcting copyright
   47  * 
   48  * Revision 2.5  91/03/16  14:51:26  rpd
   49  *      Added declarations of new functions.
   50  *      [91/02/24            rpd]
   51  * 
   52  * Revision 2.4  91/02/05  17:29:09  mrt
   53  *      Changed to new Mach copyright
   54  *      [91/02/01  16:17:24  mrt]
   55  * 
   56  * Revision 2.3  90/06/02  14:56:03  rpd
   57  *      Updated to new scheduling technology.
   58  *      [90/03/26  22:17:10  rpd]
   59  * 
   60  * Revision 2.2  90/01/11  11:44:04  dbg
   61  *      Export thread_bind.
   62  *      [89/12/06            dbg]
   63  * 
   64  * Revision 2.1  89/08/03  15:53:39  rwd
   65  * Created.
   66  * 
   67  * 29-Jun-88  David Golub (dbg) at Carnegie-Mellon University
   68  *      Removed THREAD_SHOULD_TERMINATE.
   69  *
   70  * 16-May-88  Michael Young (mwyoung) at Carnegie-Mellon University
   71  *      Added thread_wakeup_with_result routine; thread_wakeup
   72  *      is a special case.
   73  *
   74  * 16-Apr-88  Michael Young (mwyoung) at Carnegie-Mellon University
   75  *      Added THREAD_RESTART wait result value.
   76  *
   77  * 29-Feb-88  David Black (dlb) at Carnegie-Mellon University
   78  *      thread_setrun is now a real routine.
   79  *
   80  * 13-Oct-87  David Golub (dbg) at Carnegie-Mellon University
   81  *      Moved thread_will_wait and thread_go to sched_prim_macros.h,
   82  *      to avoid including thread.h everywhere.
   83  *
   84  *  5-Oct-87  David Golub (dbg) at Carnegie-Mellon University
   85  *      Created.  Moved thread_will_wait and thread_go here from
   86  *      mach_ipc.
   87  */
   88 /*
   89  *      File:   sched_prim.h
   90  *      Author: David Golub
   91  *
   92  *      Scheduling primitive definitions file
   93  *
   94  */
   95 
   96 #ifndef _KERN_SCHED_PRIM_H_
   97 #define _KERN_SCHED_PRIM_H_
   98 
   99 #include <mach/boolean.h>
  100 #include <mach/message.h>       /* for mach_msg_timeout_t */
  101 #include <kern/lock.h>
  102 #include <kern/kern_types.h>    /* for thread_t */
  103 
  104 /*
  105  *      Possible results of assert_wait - returned in
  106  *      current_thread()->wait_result.
  107  */
  108 #define THREAD_AWAKENED         0               /* normal wakeup */
  109 #define THREAD_TIMED_OUT        1               /* timeout expired */
  110 #define THREAD_INTERRUPTED      2               /* interrupted by clear_wait */
  111 #define THREAD_RESTART          3               /* restart operation entirely */
  112 
  113 typedef void    *event_t;                       /* wait event */
  114 
  115 typedef void    (*continuation_t)(void);        /* continuation */
  116 
  117 /*
  118  *      Exported interface to sched_prim.c.
  119  */
  120 
  121 extern void     sched_init(void);
  122 
  123 extern void     assert_wait(
  124         event_t         event,
  125         boolean_t       interruptible);
  126 extern void     clear_wait(
  127         thread_t        thread,
  128         int             result,
  129         boolean_t       interrupt_only);
  130 extern void     thread_sleep(
  131         event_t         event,
  132         simple_lock_t   lock,
  133         boolean_t       interruptible);
  134 extern void     thread_wakeup();                /* for function pointers */
  135 extern void     thread_wakeup_prim(
  136         event_t         event,
  137         boolean_t       one_thread,
  138         int             result);
  139 extern boolean_t thread_invoke(
  140         thread_t        old_thread,
  141         continuation_t  continuation,
  142         thread_t        new_thread);
  143 extern void     thread_block(
  144         continuation_t  continuation);
  145 extern void     thread_run(
  146         continuation_t  continuation,
  147         thread_t        new_thread);
  148 extern void     thread_set_timeout(
  149         int             t);
  150 extern void     thread_setrun(
  151         thread_t        thread,
  152         boolean_t       may_preempt);
  153 extern void     thread_dispatch(
  154         thread_t        thread);
  155 extern void     thread_continue(
  156         thread_t        old_thread);
  157 extern void     thread_go(
  158         thread_t        thread);
  159 extern void     thread_will_wait(
  160         thread_t        thread);
  161 extern void     thread_will_wait_with_timeout(
  162         thread_t        thread,
  163         mach_msg_timeout_t msecs);
  164 extern boolean_t thread_handoff(
  165         thread_t        old_thread,
  166         continuation_t  continuation,
  167         thread_t        new_thread);
  168 extern void     recompute_priorities();
  169 
  170 /*
  171  *      Routines defined as macros
  172  */
  173 
  174 #define thread_wakeup(x)                                                \
  175                 thread_wakeup_prim((x), FALSE, THREAD_AWAKENED)
  176 #define thread_wakeup_with_result(x, z)                                 \
  177                 thread_wakeup_prim((x), FALSE, (z))
  178 #define thread_wakeup_one(x)                                            \
  179                 thread_wakeup_prim((x), TRUE, THREAD_AWAKENED)
  180 
  181 /*
  182  *      Machine-dependent code must define these functions.
  183  */
  184 
  185 extern void     thread_bootstrap_return(void);
  186 extern void     thread_exception_return(void);
  187 #ifdef  __GNUC__
  188 extern void     __volatile__ thread_syscall_return(kern_return_t);
  189 #else
  190 extern void     thread_syscall_return(kern_return_t);
  191 #endif
  192 extern thread_t switch_context(
  193         thread_t        old_thread,
  194         continuation_t  continuation,
  195         thread_t        new_thread);
  196 extern void     stack_handoff(
  197         thread_t        old_thread,
  198         thread_t        new_thread);
  199 
  200 /*
  201  *      These functions are either defined in kern/thread.c
  202  *      via machine-dependent stack_attach and stack_detach functions,
  203  *      or are defined directly by machine-dependent code.
  204  */
  205 
  206 extern void     stack_alloc(
  207         thread_t        thread,
  208         void            (*resume)(thread_t));
  209 extern boolean_t stack_alloc_try(
  210         thread_t        thread,
  211         void            (*resume)(thread_t));
  212 extern void     stack_free(
  213         thread_t        thread);
  214 
  215 /*
  216  *      Convert a timeout in milliseconds (mach_msg_timeout_t)
  217  *      to a timeout in ticks (for use by set_timeout).
  218  *      This conversion rounds UP so that small timeouts
  219  *      at least wait for one tick instead of not waiting at all.
  220  */
  221 
  222 #define convert_ipc_timeout_to_ticks(millis)    \
  223                 (((millis) * hz + 999) / 1000)
  224 
  225 #endif  /* _KERN_SCHED_PRIM_H_ */

Cache object: d4f33f2ebd062abf8b5f0ae8de68a9f0


[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]


This page is part of the FreeBSD/Linux Linux Kernel Cross-Reference, and was automatically generated using a modified version of the LXR engine.