| [f761f1eb] | 1 | /*
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| [df4ed85] | 2 | * Copyright (c) 2001-2004 Jakub Jermar
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| [f761f1eb] | 3 | * All rights reserved.
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| 4 | *
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| 5 | * Redistribution and use in source and binary forms, with or without
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| 6 | * modification, are permitted provided that the following conditions
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| 7 | * are met:
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| 8 | *
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| 9 | * - Redistributions of source code must retain the above copyright
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| 10 | * notice, this list of conditions and the following disclaimer.
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| 11 | * - Redistributions in binary form must reproduce the above copyright
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| 12 | * notice, this list of conditions and the following disclaimer in the
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| 13 | * documentation and/or other materials provided with the distribution.
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| 14 | * - The name of the author may not be used to endorse or promote products
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| 15 | * derived from this software without specific prior written permission.
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| 16 | *
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| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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| 27 | */
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| 28 |
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| [764c302] | 29 | /** @addtogroup genericproc
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| [b45c443] | 30 | * @{
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| 31 | */
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| 32 | /** @file
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| 33 | */
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| 34 |
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| [06e1e95] | 35 | #ifndef KERN_SCHEDULER_H_
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| 36 | #define KERN_SCHEDULER_H_
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| [f761f1eb] | 37 |
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| 38 | #include <synch/spinlock.h>
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| [d99c1d2] | 39 | #include <time/clock.h>
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| 40 | #include <typedefs.h>
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| [23684b7] | 41 | #include <atomic.h>
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| [5c9a08b] | 42 | #include <adt/list.h>
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| [f761f1eb] | 43 |
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| [d99c1d2] | 44 | #define RQ_COUNT 16
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| 45 | #define NEEDS_RELINK_MAX (HZ)
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| [f761f1eb] | 46 |
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| [e507afa] | 47 | /** Scheduler run queue structure. */
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| [62c63fc] | 48 | typedef struct {
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| [da1bafb] | 49 | IRQ_SPINLOCK_DECLARE(lock);
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| 50 | link_t rq_head; /**< List of ready threads. */
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| 51 | size_t n; /**< Number of threads in rq_ready. */
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| [62c63fc] | 52 | } runq_t;
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| [f761f1eb] | 53 |
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| [59e07c91] | 54 | extern atomic_t nrdy;
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| [f761f1eb] | 55 | extern void scheduler_init(void);
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| 56 |
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| [b49f4ae] | 57 | extern void scheduler_fpu_lazy_request(void);
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| [f761f1eb] | 58 | extern void scheduler(void);
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| 59 | extern void kcpulb(void *arg);
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| 60 |
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| [10e16a7] | 61 | extern void sched_print_list(void);
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| [97f1691] | 62 |
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| [cb4b61d] | 63 | /*
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| [d99c1d2] | 64 | * To be defined by architectures.
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| [cb4b61d] | 65 | */
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| [39cea6a] | 66 | extern void before_task_runs_arch(void);
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| [0ca6faa] | 67 | extern void before_thread_runs_arch(void);
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| [97f1691] | 68 | extern void after_thread_ran_arch(void);
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| [cb4b61d] | 69 |
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| [f761f1eb] | 70 | #endif
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| [b45c443] | 71 |
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| [764c302] | 72 | /** @}
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| [b45c443] | 73 | */
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