Clock APIs. More...

#include <tinyara/config.h>
#include <stdint.h>
#include <time.h>
#include <tinyara/compiler.h>

Include dependency graph for clock.h:

Macros
#define	__HAVE_KERNEL_GLOBALS 1

#define	NSEC_PER_SEC 1000000000

#define	USEC_PER_SEC 1000000

#define	MSEC_PER_SEC 1000

#define	DSEC_PER_SEC 10

#define	NSEC_PER_DSEC 100000000

#define	USEC_PER_DSEC 100000

#define	MSEC_PER_DSEC 100

#define	NSEC_PER_MSEC 1000000

#define	USEC_PER_MSEC 1000

#define	NSEC_PER_USEC 1000

#define	USEC_PER_TICK (10000)

#define	TICK_PER_DSEC (USEC_PER_DSEC / USEC_PER_TICK) /* Truncates! */

#define	TICK_PER_SEC (USEC_PER_SEC / USEC_PER_TICK) /* Truncates! */

#define	TICK_PER_MSEC (USEC_PER_MSEC / USEC_PER_TICK) /* Truncates! */

#define	MSEC_PER_TICK (USEC_PER_TICK / USEC_PER_MSEC) /* Truncates! */

#define	NSEC_PER_TICK (USEC_PER_TICK * NSEC_PER_USEC) /* Exact */

#define	NSEC2TICK(nsec) (((nsec)+(NSEC_PER_TICK/2))/NSEC_PER_TICK) /* Rounds */

#define	USEC2TICK(usec) (((usec)+(USEC_PER_TICK/2))/USEC_PER_TICK) /* Rounds */

#define	MSEC2TICK(msec) (((msec)+(MSEC_PER_TICK/2))/MSEC_PER_TICK) /* Rounds */

#define	DSEC2TICK(dsec) MSEC2TICK((dsec) * MSEC_PER_DSEC) /* Rounds */

#define	SEC2TICK(sec) MSEC2TICK((sec) * MSEC_PER_SEC) /* Rounds */

#define	TICK2NSEC(tick) ((tick) * NSEC_PER_TICK) /* Exact */

#define	TICK2USEC(tick) ((tick) * USEC_PER_TICK) /* Exact */

#define	TICK2MSEC(tick) ((tick)MSEC_PER_TICK) / Exact */

#define	TICK2DSEC(tick) (((tick)+(TICK_PER_DSEC/2))/TICK_PER_DSEC) /* Rounds */

#define	TICK2SEC(tick) (((tick)+(TICK_PER_SEC/2))/TICK_PER_SEC) /* Rounds */

#define	EXTERN extern

#define	clock_systimer() g_system_timer

Detailed Description

Clock APIs.

Definition in file clock.h.

Macros