/*
* 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 kernel_generic_proc
* @{
*/
/** @file
*/
#ifndef KERN_SCHEDULER_H_
#define KERN_SCHEDULER_H_
#include <stddef.h>
#include <synch/spinlock.h>
#include <time/clock.h>
#include <atomic.h>
#include <adt/list.h>
#include <abi/proc/thread.h>
#define RQ_COUNT 16
#define NEEDS_RELINK_MAX (HZ)
/** Scheduler run queue structure. */
typedef struct {
IRQ_SPINLOCK_DECLARE(lock);
list_t rq; /**< List of ready threads. */
size_t n; /**< Number of threads in rq_ready. */
} runq_t;
extern atomic_size_t nrdy;
extern void scheduler_init(void);
extern void scheduler_fpu_lazy_request(void);
extern void kcpulb(void *arg);
extern void sched_print_list(void);
extern void scheduler_run(void) __attribute__((noreturn));
extern void scheduler_enter(state_t);
extern void thread_main_func(void);
/*
* 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);
#endif
/** @}
*/