| 1 |
606 |
jeremybenn |
/**
|
| 2 |
|
|
* \defgroup timer Timer library
|
| 3 |
|
|
*
|
| 4 |
|
|
* The timer library provides functions for setting, resetting and
|
| 5 |
|
|
* restarting timers, and for checking if a timer has expired. An
|
| 6 |
|
|
* application must "manually" check if its timers have expired; this
|
| 7 |
|
|
* is not done automatically.
|
| 8 |
|
|
*
|
| 9 |
|
|
* A timer is declared as a \c struct \c timer and all access to the
|
| 10 |
|
|
* timer is made by a pointer to the declared timer.
|
| 11 |
|
|
*
|
| 12 |
|
|
* \note The timer library uses the \ref clock "Clock library" to
|
| 13 |
|
|
* measure time. Intervals should be specified in the format used by
|
| 14 |
|
|
* the clock library.
|
| 15 |
|
|
*
|
| 16 |
|
|
* @{
|
| 17 |
|
|
*/
|
| 18 |
|
|
|
| 19 |
|
|
|
| 20 |
|
|
/**
|
| 21 |
|
|
* \file
|
| 22 |
|
|
* Timer library header file.
|
| 23 |
|
|
* \author
|
| 24 |
|
|
* Adam Dunkels <adam@sics.se>
|
| 25 |
|
|
*/
|
| 26 |
|
|
|
| 27 |
|
|
/*
|
| 28 |
|
|
* Copyright (c) 2004, Swedish Institute of Computer Science.
|
| 29 |
|
|
* All rights reserved.
|
| 30 |
|
|
*
|
| 31 |
|
|
* Redistribution and use in source and binary forms, with or without
|
| 32 |
|
|
* modification, are permitted provided that the following conditions
|
| 33 |
|
|
* are met:
|
| 34 |
|
|
* 1. Redistributions of source code must retain the above copyright
|
| 35 |
|
|
* notice, this list of conditions and the following disclaimer.
|
| 36 |
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
| 37 |
|
|
* notice, this list of conditions and the following disclaimer in the
|
| 38 |
|
|
* documentation and/or other materials provided with the distribution.
|
| 39 |
|
|
* 3. Neither the name of the Institute nor the names of its contributors
|
| 40 |
|
|
* may be used to endorse or promote products derived from this software
|
| 41 |
|
|
* without specific prior written permission.
|
| 42 |
|
|
*
|
| 43 |
|
|
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
|
| 44 |
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
| 45 |
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
| 46 |
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
|
| 47 |
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
| 48 |
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
| 49 |
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
| 50 |
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
| 51 |
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
| 52 |
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
| 53 |
|
|
* SUCH DAMAGE.
|
| 54 |
|
|
*
|
| 55 |
|
|
* This file is part of the uIP TCP/IP stack
|
| 56 |
|
|
*
|
| 57 |
|
|
* Author: Adam Dunkels <adam@sics.se>
|
| 58 |
|
|
*
|
| 59 |
|
|
* $Id: timer.h 2 2011-07-17 20:13:17Z filepang@gmail.com $
|
| 60 |
|
|
*/
|
| 61 |
|
|
#ifndef __TIMER_H__
|
| 62 |
|
|
#define __TIMER_H__
|
| 63 |
|
|
|
| 64 |
|
|
#include "clock.h"
|
| 65 |
|
|
|
| 66 |
|
|
/**
|
| 67 |
|
|
* A timer.
|
| 68 |
|
|
*
|
| 69 |
|
|
* This structure is used for declaring a timer. The timer must be set
|
| 70 |
|
|
* with timer_set() before it can be used.
|
| 71 |
|
|
*
|
| 72 |
|
|
* \hideinitializer
|
| 73 |
|
|
*/
|
| 74 |
|
|
struct timer {
|
| 75 |
|
|
clock_time_t start;
|
| 76 |
|
|
clock_time_t interval;
|
| 77 |
|
|
};
|
| 78 |
|
|
|
| 79 |
|
|
void timer_set(struct timer *t, clock_time_t interval);
|
| 80 |
|
|
void timer_reset(struct timer *t);
|
| 81 |
|
|
void timer_restart(struct timer *t);
|
| 82 |
|
|
int timer_expired(struct timer *t);
|
| 83 |
|
|
|
| 84 |
|
|
#endif /* __TIMER_H__ */
|
| 85 |
|
|
|
| 86 |
|
|
/** @} */
|
