| 1 | /*
|
|---|
| 2 | * Copyright (C) 2001-2004 Jakub Jermar
|
|---|
| 3 | * All rights reserved.
|
|---|
| 4 | *
|
|---|
| 5 | * Redistribution and use in source and binary forms, with or without
|
|---|
| 6 | * modification, are permitted provided that the following conditions
|
|---|
| 7 | * are met:
|
|---|
| 8 | *
|
|---|
| 9 | * - Redistributions of source code must retain the above copyright
|
|---|
| 10 | * notice, this list of conditions and the following disclaimer.
|
|---|
| 11 | * - Redistributions in binary form must reproduce the above copyright
|
|---|
| 12 | * notice, this list of conditions and the following disclaimer in the
|
|---|
| 13 | * documentation and/or other materials provided with the distribution.
|
|---|
| 14 | * - The name of the author may not be used to endorse or promote products
|
|---|
| 15 | * derived from this software without specific prior written permission.
|
|---|
| 16 | *
|
|---|
| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|---|
| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|---|
| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|---|
| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|---|
| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|---|
| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|---|
| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|---|
| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|---|
| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|---|
| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|---|
| 27 | */
|
|---|
| 28 |
|
|---|
| 29 | #ifndef __TIMEOUT_H__
|
|---|
| 30 | #define __TIMEOUT_H__
|
|---|
| 31 |
|
|---|
| 32 | #include <arch/types.h>
|
|---|
| 33 | #include <typedefs.h>
|
|---|
| 34 | #include <synch/spinlock.h>
|
|---|
| 35 | #include <adt/list.h>
|
|---|
| 36 |
|
|---|
| 37 | #define us2ticks(us) ((__u64)(((__u32) (us)/(1000000/HZ))))
|
|---|
| 38 |
|
|---|
| 39 | typedef void (* timeout_handler_t)(void *arg);
|
|---|
| 40 |
|
|---|
| 41 | struct timeout {
|
|---|
| 42 | SPINLOCK_DECLARE(lock);
|
|---|
| 43 |
|
|---|
| 44 | link_t link; /**< Link to the list of active timeouts on THE->cpu */
|
|---|
| 45 |
|
|---|
| 46 | __u64 ticks; /**< Timeout will be activated in this amount of clock() ticks. */
|
|---|
| 47 |
|
|---|
| 48 | timeout_handler_t handler; /**< Function that will be called on timeout activation. */
|
|---|
| 49 | void *arg; /**< Argument to be passed to handler() function. */
|
|---|
| 50 |
|
|---|
| 51 | cpu_t *cpu; /**< On which processor is this timeout registered. */
|
|---|
| 52 | };
|
|---|
| 53 |
|
|---|
| 54 | extern void timeout_init(void);
|
|---|
| 55 | extern void timeout_initialize(timeout_t *t);
|
|---|
| 56 | extern void timeout_reinitialize(timeout_t *t);
|
|---|
| 57 | extern void timeout_register(timeout_t *t, __u64 usec, timeout_handler_t f, void *arg);
|
|---|
| 58 | extern bool timeout_unregister(timeout_t *t);
|
|---|
| 59 |
|
|---|
| 60 | #endif
|
|---|
