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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 __TIMEOUT_H__ |
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| 30 | #define __TIMEOUT_H__ |
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| 31 | |||
| 32 | #include <arch/types.h> |
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| 33 | #include <typedefs.h> |
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| 34 | #include <synch/spinlock.h> |
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| 788 | jermar | 35 | #include <adt/list.h> |
| 1 | jermar | 36 | |
| 125 | jermar | 37 | #define us2ticks(us) ((__u64)(((__u32) (us)/(1000000/HZ)))) |
| 1 | jermar | 38 | |
| 411 | jermar | 39 | typedef void (* timeout_handler_t)(void *arg); |
| 1 | jermar | 40 | |
| 41 | struct timeout { |
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| 623 | jermar | 42 | SPINLOCK_DECLARE(lock); |
| 1 | jermar | 43 | |
| 411 | jermar | 44 | link_t link; /**< Link to the list of active timeouts on THE->cpu */ |
| 1 | jermar | 45 | |
| 411 | jermar | 46 | __u64 ticks; /**< Timeout will be activated in this amount of clock() ticks. */ |
| 1 | jermar | 47 | |
| 411 | jermar | 48 | timeout_handler_t handler; /**< Function that will be called on timeout activation. */ |
| 49 | void *arg; /**< Argument to be passed to handler() function. */ |
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| 1 | jermar | 50 | |
| 411 | jermar | 51 | cpu_t *cpu; /**< On which processor is this timeout registered. */ |
| 1 | jermar | 52 | }; |
| 53 | |||
| 54 | extern void timeout_init(void); |
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| 55 | extern void timeout_initialize(timeout_t *t); |
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| 56 | extern void timeout_reinitialize(timeout_t *t); |
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| 411 | jermar | 57 | extern void timeout_register(timeout_t *t, __u64 usec, timeout_handler_t f, void *arg); |
| 58 | extern bool timeout_unregister(timeout_t *t); |
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| 1 | jermar | 59 | |
| 60 | #endif |