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| Rev | Author | Line No. | Line |
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| 1 | jermar | 1 | /* |
| 2 | * Copyright (C) 2001-2004 Jakub Jermar |
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| 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 | |||
| 29 | #ifndef __SCHEDULER_H__ |
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| 30 | #define __SCHEDULER_H__ |
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| 31 | |||
| 32 | #include <synch/spinlock.h> |
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| 33 | #include <time/clock.h> /* HZ */ |
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| 34 | #include <typedefs.h> |
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| 35 | #include <list.h> |
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| 36 | |||
| 37 | #define RQ_COUNT 16 |
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| 38 | #define NEEDS_RELINK_MAX (HZ) |
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| 39 | |||
| 40 | struct runq { |
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| 41 | spinlock_t lock; |
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| 410 | jermar | 42 | link_t rq_head; /**< List of ready threads. */ |
| 43 | int n; /**< Number of threads in rq_ready. */ |
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| 1 | jermar | 44 | }; |
| 45 | |||
| 227 | jermar | 46 | extern volatile count_t nrdy; |
| 1 | jermar | 47 | |
| 48 | static thread_t *find_best_thread(void); |
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| 49 | static void relink_rq(int start); |
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| 50 | static void scheduler_separated_stack(void); |
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| 51 | |||
| 52 | extern void scheduler_init(void); |
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| 53 | |||
| 309 | palkovsky | 54 | extern void scheduler_fpu_lazy_request(void); |
| 1 | jermar | 55 | extern void scheduler(void); |
| 56 | extern void kcpulb(void *arg); |
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| 57 | |||
| 22 | jermar | 58 | /* |
| 59 | * To be defined by architectures: |
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| 60 | */ |
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| 61 | |||
| 62 | extern void before_thread_runs(void); |
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| 52 | vana | 63 | extern void before_thread_runs_arch(void); |
| 22 | jermar | 64 | |
| 1 | jermar | 65 | #endif |