f6f230febe
of ksegs since they primarily operation on processes.
- KSEs take ticks so pass the kse through sched_clock().
- Add a sched_class() routine that adjusts a ksegrp pri class.
- Define a sched_fork_{kse,thread,ksegrp} and sched_exit_{kse,thread,ksegrp}
that will be used to tell the scheduler about new instances of these
structures within the same process. These will be used by THR and KSE.
- Change sched_4bsd to reflect this API update.
96 lines
3.2 KiB
C
96 lines
3.2 KiB
C
/*-
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* Copyright (c) 2002, Jeffrey Roberson <jeff@freebsd.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice unmodified, this list of conditions, and the following
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* disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _SYS_SCHED_H_
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#define _SYS_SCHED_H_
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/*
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* General scheduling info.
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*/
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int sched_rr_interval(void);
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int sched_runnable(void);
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/*
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* Proc related scheduling hooks.
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*/
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void sched_exit(struct proc *p, struct proc *child);
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void sched_fork(struct proc *p, struct proc *child);
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/*
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* KSE Groups contain scheduling priority information. They record the
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* behavior of groups of KSEs and threads.
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*/
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void sched_class(struct ksegrp *kg, int class);
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void sched_exit_ksegrp(struct ksegrp *kg, struct ksegrp *child);
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void sched_fork_ksegrp(struct ksegrp *kg, struct ksegrp *child);
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void sched_nice(struct ksegrp *kg, int nice);
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/*
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* Threads are switched in and out, block on resources, and have temporary
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* priorities inherited from their ksegs.
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*/
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void sched_exit_thread(struct thread *td, struct thread *child);
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void sched_fork_thread(struct thread *td, struct thread *child);
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void sched_prio(struct thread *td, u_char prio);
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void sched_sleep(struct thread *td, u_char prio);
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void sched_switchin(struct thread *td);
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void sched_switchout(struct thread *td);
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void sched_userret(struct thread *td);
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void sched_wakeup(struct thread *td);
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/*
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* KSEs are moved on and off of run queues.
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*/
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void sched_add(struct kse *ke);
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struct kse *sched_choose(void);
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void sched_clock(struct kse *ke);
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void sched_exit_kse(struct kse *ke, struct kse *child);
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void sched_fork_kse(struct kse *ke, struct kse *child);
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void sched_rem(struct kse *ke);
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/*
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* and they use up cpu time.
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*/
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fixpt_t sched_pctcpu(struct kse *ke);
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/*
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* These procedures tell the process data structure allocation code how
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* many bytes to actually allocate.
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*/
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int sched_sizeof_kse(void);
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int sched_sizeof_ksegrp(void);
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int sched_sizeof_proc(void);
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int sched_sizeof_thread(void);
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extern struct ke_sched *kse0_sched;
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extern struct kg_sched *ksegrp0_sched;
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extern struct p_sched *proc0_sched;
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extern struct td_sched *thread0_sched;
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#endif /* !_SYS_SCHED_H_ */
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