sys_time.c File Reference

#include <kernel/sched/sys_time.h>
#include <kernel/cpu/cpu.h>
#include <kernel/cpu/interrupt.h>
#include <kernel/cpu/syscalls.h>
#include <kernel/drivers/apic.h>
#include <kernel/drivers/rtc.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 <stdbool.h>
#include <stdint.h>
#include <sys/math.h>

Go to the source code of this file.

Functions
static void	timer_boot_epoch_init (void)
uint64_t	sys_time_register_source (const sys_time_source_t *source)
	Register a system timer source.
void	sys_time_unregister_source (const sys_time_source_t *source)
	Unregister a system timer source.
clock_t	sys_time_uptime (void)
	Time since boot.
time_t	sys_time_unix_epoch (void)
	The unix epoch.
void	sys_time_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 time_t	bootEpoch = 0
static bool	bootEpochInitialized = false
static sys_time_source_t *	sources [SYS_TIME_MAX_SOURCES]
static uint32_t	sourceCount = 0
static sys_time_source_t *	bestSource = NULL
static rwlock_t	sourcesLock = RWLOCK_CREATE

Function Documentation

SYSCALL_DEFINE() [1/2]

SYSCALL_DEFINE	(	SYS_UNIX_EPOCH	,
		time_t	,
		time_t *	timePtr
	)

Definition at line 151 of file sys_time.c.

References ERR, NULL, sched_thread(), sys_time_unix_epoch(), and thread_copy_to_user().

SYSCALL_DEFINE() [2/2]

SYSCALL_DEFINE	(	SYS_UPTIME	,
		clock_t
	)

Definition at line 146 of file sys_time.c.

References sys_time_uptime().

timer_boot_epoch_init()

static void timer_boot_epoch_init ( void  )

static

Definition at line 27 of file sys_time.c.

References bootEpoch, bootEpochInitialized, mktime(), rtc_read(), and time().

Referenced by sys_time_unix_epoch().

Variable Documentation

bestSource

sys_time_source_t* bestSource = NULL

static

Definition at line 24 of file sys_time.c.

Referenced by sys_time_register_source(), sys_time_unregister_source(), and sys_time_uptime().

bootEpoch

time_t bootEpoch = 0

static

Definition at line 19 of file sys_time.c.

Referenced by sys_time_unix_epoch(), and timer_boot_epoch_init().

bootEpochInitialized

bool bootEpochInitialized = false

static

Definition at line 20 of file sys_time.c.

Referenced by sys_time_unix_epoch(), and timer_boot_epoch_init().

sourceCount

uint32_t sourceCount = 0

static

Definition at line 23 of file sys_time.c.

Referenced by sys_time_register_source(), and sys_time_unregister_source().

sources

sys_time_source_t* sources[SYS_TIME_MAX_SOURCES]

static

Definition at line 22 of file sys_time.c.

Referenced by sys_time_register_source(), and sys_time_unregister_source().

sourcesLock

rwlock_t sourcesLock = RWLOCK_CREATE

static

Definition at line 25 of file sys_time.c.

Referenced by sys_time_register_source(), sys_time_unregister_source(), and sys_time_uptime().