scoutos / prex-0.9.0 / sys / include / timer.h @ 03e9c04a
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/*-
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* Copyright (c) 2005-2007, Kohsuke Ohtani
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the author nor the names of any co-contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef _TIMER_H
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#define _TIMER_H
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#include <types.h> |
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#include <sys/cdefs.h> |
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#include <sys/list.h> |
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#include <sys/sysinfo.h> |
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#include <event.h> |
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/*
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* Time-out element.
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*/
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struct timer {
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struct list link; /* linkage on timer chain */ |
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int state; /* timer state */ |
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u_long expire; /* expiration time, in ticks */
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u_long interval; /* time interval */
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void (*func)(void *); /* function to call */ |
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void *arg; /* function argument */ |
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struct event event; /* event for this timer */ |
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}; |
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/* state for timer */
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#define TM_ACTIVE 0x54616321 /* magic# 'Tac!' */ |
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#define TM_STOP 0x54737421 /* magic# 'Tst!' */ |
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/*
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* Macro to compare two timer counts.
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* time_after() returns true if a is after b.
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*/
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#define time_after(a,b) (((long)(b) - (long)(a)) < 0) |
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#define time_before(a,b) time_after(b,a)
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#define time_after_eq(a,b) (((long)(a) - (long)(b)) >= 0) |
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#define time_before_eq(a,b) time_after_eq(b,a)
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/*
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* Macro to get the next element on timer list.
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*/
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#define timer_next(head) \
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(list_entry(list_first(head), struct timer, link))
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__BEGIN_DECLS |
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void timer_callout(struct timer *, u_long, void (*)(void *), void *); |
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void timer_stop(struct timer *); |
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u_long timer_delay(u_long); |
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int timer_sleep(u_long, u_long *);
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int timer_alarm(u_long, u_long *);
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int timer_periodic(thread_t, u_long, u_long);
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int timer_waitperiod(void); |
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void timer_cancel(thread_t);
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void timer_clock(void); |
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void timer_handler(void); |
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u_long timer_ticks(void);
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void timer_info(struct timerinfo *); |
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void timer_init(void); |
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__END_DECLS |
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#endif /* !_TIMER_H */ |