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1 | jermar | 1 | /* |
2071 | jermar | 2 | * Copyright (c) 2001-2004 Jakub Jermar |
1 | jermar | 3 | * All rights reserved. |
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 | |||
1731 | jermar | 29 | /** @addtogroup time |
1702 | cejka | 30 | * @{ |
31 | */ |
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32 | /** @file |
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33 | */ |
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34 | |||
1881 | jermar | 35 | #ifndef KERN_TIMEOUT_H_ |
36 | #define KERN_TIMEOUT_H_ |
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1 | jermar | 37 | |
38 | #include <arch/types.h> |
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2079 | decky | 39 | #include <cpu.h> |
1 | jermar | 40 | #include <synch/spinlock.h> |
788 | jermar | 41 | #include <adt/list.h> |
1 | jermar | 42 | |
1780 | jermar | 43 | #define us2ticks(us) ((uint64_t)(((uint32_t) (us)/(1000000/HZ)))) |
1 | jermar | 44 | |
411 | jermar | 45 | typedef void (* timeout_handler_t)(void *arg); |
1 | jermar | 46 | |
47 | struct timeout { |
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623 | jermar | 48 | SPINLOCK_DECLARE(lock); |
1 | jermar | 49 | |
411 | jermar | 50 | link_t link; /**< Link to the list of active timeouts on THE->cpu */ |
1 | jermar | 51 | |
1780 | jermar | 52 | uint64_t ticks; /**< Timeout will be activated in this amount of clock() ticks. */ |
1 | jermar | 53 | |
411 | jermar | 54 | timeout_handler_t handler; /**< Function that will be called on timeout activation. */ |
55 | void *arg; /**< Argument to be passed to handler() function. */ |
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1 | jermar | 56 | |
411 | jermar | 57 | cpu_t *cpu; /**< On which processor is this timeout registered. */ |
1 | jermar | 58 | }; |
59 | |||
60 | extern void timeout_init(void); |
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61 | extern void timeout_initialize(timeout_t *t); |
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62 | extern void timeout_reinitialize(timeout_t *t); |
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1780 | jermar | 63 | extern void timeout_register(timeout_t *t, uint64_t usec, timeout_handler_t f, void *arg); |
411 | jermar | 64 | extern bool timeout_unregister(timeout_t *t); |
1 | jermar | 65 | |
66 | #endif |
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1702 | cejka | 67 | |
1731 | jermar | 68 | /** @} |
1702 | cejka | 69 | */ |