/home/epimerde/documents/tc11/CanFestival-3/src/timer.c File Reference

#include <applicfg.h>
#include "timer.h"

Include dependency graph for timer.c:

Go to the source code of this file.

Defines
#define	min_val(a, b)   ((a<b)?a:b)
Functions
TIMER_HANDLE	SetAlarm (CO_Data *d, UNS32 id, TimerCallback_t callback, TIMEVAL value, TIMEVAL period)
TIMER_HANDLE	DelAlarm (TIMER_HANDLE handle)
void	TimeDispatch ()
Variables
s_timer_entry	timers [MAX_NB_TIMER] = {{TIMER_FREE, NULL, NULL, 0, 0, 0},}
TIMEVAL	total_sleep_time = TIMEVAL_MAX
TIMER_HANDLE	last_timer_raw = -1

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Detailed Description

Author:

Edouard TISSERANT and Francis DUPIN

Date:

Tue Jun 5 09:32:32 2007

Definition in file timer.c.

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Define Documentation

#define min_val	(	a,
		b		)	((a<b)?a:b)

Definition at line 44 of file timer.c.

Referenced by TimeDispatch().

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Function Documentation

TIMER_HANDLE DelAlarm

(

TIMER_HANDLE

handle

)

----- Use this to remove an alarm ----

Parameters:

handle

Returns:

Quick and dirty. system timer will continue to be trigged, but no action will be preformed.

Definition at line 112 of file timer.c.

References last_timer_raw, and timers.

Referenced by heartbeatStop(), proceedNODE_GUARD(), ProducerHearbeatAlarm(), and stopSYNC().

TIMER_HANDLE SetAlarm	(	CO_Data *	d,
		UNS32	id,
		TimerCallback_t	callback,
		TIMEVAL	value,
		TIMEVAL	period
	)

------- Use this to declare a new alarm ------

Parameters:

	d
	id
	callback
	value
	period

Returns:

in order to decide new timer setting we have to run over all timer rows

if something to store

and empty row

just store

if successfull

set next wakeup alarm if new entry is sooner than others, or if it is alone

printf("elapsed_time=%d real_timer_value=%d total_sleep_time=%d\n", elapsed_time, real_timer_value, total_sleep_time);

printf("SetAlarm() return %d\n", row_number);

Definition at line 57 of file timer.c.

References last_timer_raw, and timers.

Referenced by heartbeatInit(), proceedNODE_GUARD(), and startSYNC().

void TimeDispatch

(

)

------ TimeDispatch is called on each timer expiration ----

used to compute when should normaly occur next wakeup

First run : change timer state depending on time

Get time since timer signal

if row is active

to be trigged

if simply outdated

ask for trig

or period have expired

set val as interval, with overrun correction

Check if this new timer value is the soonest

Each armed timer value in decremented.

Check if this new timer value is the soonest

Remember how much time we should sleep.

Set timer to soonest occurence

Then trig them or not.

reset trig state (will be free if not periodic)

trig !

Definition at line 131 of file timer.c.

References last_timer_raw, min_val, timers, and total_sleep_time.

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Variable Documentation

TIMER_HANDLE last_timer_raw = -1

Definition at line 42 of file timer.c.

Referenced by DelAlarm(), SetAlarm(), and TimeDispatch().

s_timer_entry timers[MAX_NB_TIMER] = {{TIMER_FREE, NULL, NULL, 0, 0, 0},}

Definition at line 39 of file timer.c.

Referenced by DelAlarm(), SetAlarm(), and TimeDispatch().

TIMEVAL total_sleep_time = TIMEVAL_MAX

Definition at line 41 of file timer.c.

Referenced by TimeDispatch().

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