0,0 → 1,72 |
/* |
* Copyright (c) 2001-2004 Jakub Jermar |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
|
/** @addtogroup genericproc |
* @{ |
*/ |
/** @file |
*/ |
|
#ifndef KERN_SCHEDULER_H_ |
#define KERN_SCHEDULER_H_ |
|
#include <synch/spinlock.h> |
#include <time/clock.h> /* HZ */ |
#include <atomic.h> |
#include <adt/list.h> |
|
#define RQ_COUNT 16 |
#define NEEDS_RELINK_MAX (HZ) |
|
/** Scheduler run queue structure. */ |
typedef struct { |
SPINLOCK_DECLARE(lock); |
link_t rq_head; /**< List of ready threads. */ |
size_t n; /**< Number of threads in rq_ready. */ |
} runq_t; |
|
extern atomic_t nrdy; |
extern void scheduler_init(void); |
|
extern void scheduler_fpu_lazy_request(void); |
extern void scheduler(void); |
extern void kcpulb(void *arg); |
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extern void sched_print_list(void); |
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/* |
* To be defined by architectures: |
*/ |
extern void before_task_runs_arch(void); |
extern void before_thread_runs_arch(void); |
extern void after_thread_ran_arch(void); |
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#endif |
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/** @} |
*/ |