Desktop/xinu_mips-1.0.2.tar/xinu_mips-1.0.2/include/clock.h File Reference

#include <queue.h>

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Defines
#define	QUANTUM   10
Functions
void	clockinit (void)
void	clock_update (ulong)
interrupt	clockintr (void)
Variables
ulong	preempt
ulong	ctr_mS
ulong	clocktime
ulong	time_base_freq
ulong	time_intr_freq
queue	sleepq

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Detailed Description

Definitions relating to the hardware clock and the XINU clock interrupt.

Id

clock.h 226 2007-07-12 01:18:27Z mschul

Definition in file clock.h.

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Define Documentation

#define QUANTUM   10

clock ticks until preemption

Definition at line 14 of file clock.h.

Referenced by resched().

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Function Documentation

void clock_update

(

ulong

)

Referenced by clockintr().

void clockinit

(

void

)

Referenced by sysinit().

interrupt clockintr

(

void

)

XINU Clock handler. Ticks. Tocks. Wakes up sleeping procs.

Definition at line 20 of file clockintr.c.

References clock_update(), clocktime, ctr_mS, firstkey, nonempty, preempt, resched(), restore_intr(), sleepq, time_intr_freq, and wakeup().

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Variable Documentation

ulong clocktime

current time in secs since boot

Referenced by clockintr().

ulong ctr_mS

millisecond counter

Referenced by clockintr().

ulong preempt

Referenced by clockintr(), and resched().

queue sleepq

queue for sleeping processes

Referenced by clockintr(), sleep(), and wakeup().

ulong time_base_freq

frequency of hardware clock update

ulong time_intr_freq

frequency of XINU clock interrupt

Referenced by clockintr().