rt_thread.h

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    1 /* 
    2  * Mach Operating System
    3  * Copyright (c) 1993 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:        rt_thread.h,v $
   29  * Revision 2.2  93/11/17  17:20:11  dbg
   30  *      Renamed 'rt' or 'realtime' threads and timers to 'periodic'
   31  *      threads and timers (even though they can be used for nonperiodic
   32  *      threads).
   33  *      [93/11/16            dbg]
   34  * 
   35  *      Created.
   36  *      [93/05/12            dbg]
   37  * 
   38  */
   39 
   40 #ifndef _KERN_RT_THREAD_H_
   41 #define _KERN_RT_THREAD_H_
   42 
   43 #include <mach/time_spec.h>
   44 #include <mach/realtime_policy.h>
   45 #include <kern/clock.h>
   46 #include <kern/thread.h>
   47 #include <kern/mach_timer.h>
   48 #include <ipc/ipc_types.h>
   49 
   50 /*
   51  *      Common thread scheduling fields for real-time scheduling
   52  *      policies.
   53  */
   54 
   55 struct rt_sched_data {
   56         time_spec_t     start_time;
   57         time_spec_t     period;
   58         time_spec_t     deadline;
   59 };
   60 
   61 #define rt_sched(th)    ((struct rt_sched_data *)&(th)->sched_data)
   62 
   63 /*
   64  *      Periodic (real-time) thread routines.
   65  */
   66 
   67 extern kern_return_t
   68 thread_get_periodic_timers(
   69         thread_t        thread,
   70         mach_timer_t    *wakeup_timer_p,
   71         mach_timer_t    *deadline_timer_p);
   72 
   73 extern kern_return_t
   74 thread_set_periodic_timers(
   75         thread_t        thread,
   76         mach_timer_t    wakeup_timer,
   77         mach_timer_t    deadline_timer);
   78 
   79 extern kern_return_t
   80 periodic_thread_create(
   81         task_t                  parent_task,
   82         mach_clock_t            clock,
   83         policy_param_realtime_t rt_attr,
   84         ipc_port_t              deadline_port,
   85         int                     state_flavor,
   86         thread_state_t          state,
   87         natural_t               state_count,
   88         thread_t                *child_thread); /* out */
   89 
   90 extern kern_return_t
   91 periodic_thread_restart(
   92         thread_t        thread);
   93 
   94 #endif  /* _KERN_RT_THREAD_H_ */

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

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