clock.c File Reference

#include <kernel/sched/clock.h>
#include <kernel/cpu/cpu.h>
#include <kernel/cpu/interrupt.h>
#include <kernel/cpu/syscall.h>
#include <kernel/log/log.h>
#include <kernel/log/panic.h>
#include <kernel/module/symbol.h>
#include <kernel/sched/thread.h>
#include <kernel/sched/timer.h>
#include <kernel/sync/rwlock.h>
#include <stdatomic.h>
#include <stdbool.h>
#include <stdint.h>
#include <sys/math.h>

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Functions
static void	clock_update_best_sources (void)
uint64_t	clock_source_register (const clock_source_t *source)
	Register a system timer source.
void	clock_source_unregister (const clock_source_t *source)
	Unregister a system timer source.
clock_t	clock_uptime (void)
	Retrieve the time in nanoseconds since boot.
time_t	clock_epoch (void)
	Retrieve the seconds since the unix epoch.
void	clock_wait (clock_t nanoseconds)
	Wait for a specified number of nanoseconds.
	SYSCALL_DEFINE (SYS_UPTIME, clock_t)
	SYSCALL_DEFINE (SYS_UNIX_EPOCH, time_t, time_t *timePtr)

Variables
static const clock_source_t *	sources [CLOCK_MAX_SOURCES] = {0}
static uint32_t	sourceCount = 0
static const clock_source_t *	bestNsSource = NULL
static const clock_source_t *	bestEpochSource = NULL
static rwlock_t	sourcesLock = RWLOCK_CREATE()

Function Documentation

clock_update_best_sources()

static void clock_update_best_sources ( void  )

static

Definition at line 28 of file clock.c.

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SYSCALL_DEFINE() [1/2]

SYSCALL_DEFINE	(	SYS_UPTIME	,
		clock_t
	)

Definition at line 149 of file clock.c.

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SYSCALL_DEFINE() [2/2]

SYSCALL_DEFINE	(	SYS_UNIX_EPOCH	,
		time_t	,
		time_t *	timePtr
	)

Definition at line 154 of file clock.c.

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Variable Documentation

sources

const clock_source_t* sources[CLOCK_MAX_SOURCES] = {0}

static

Definition at line 18 of file clock.c.

sourceCount

uint32_t sourceCount = 0

static

Definition at line 19 of file clock.c.

bestNsSource

const clock_source_t* bestNsSource = NULL

static

Definition at line 20 of file clock.c.

bestEpochSource

const clock_source_t* bestEpochSource = NULL

static

Definition at line 21 of file clock.c.

sourcesLock

rwlock_t sourcesLock = RWLOCK_CREATE()

static

Definition at line 22 of file clock.c.