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/projects/cubeos/src_current/kernel/schedule.h File Reference

#include <context.h>
#include <reent.h>
#include <list.h>

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Compounds
struct	process
	process/thread table entry. More...
Defines
#define	RR_SCHEDULER
#define	MAX_PROCESSNUM   16
	size of the process table. Incrementing makes things (slightly) slower. More...
#define	MAX_PRIONUM   16
	size of the priority table. More...
#define	NO_TASK   -1
	marker for empty task. More...
#define	STATE_EMPTY   0
	thread slot not used. More...
#define	STATE_RUNNING   1
	thread is on CPU. More...
#define	STATE_READY   2
	thread ready to roll. More...
#define	STATE_SUSPEND   3
	thread sleeping. More...
#define	STATE_KILLED   4
	thread in coma (almost dead). More...
Functions
int	KERN_schedinit ()
	initalizes the scheduler. More...
int	KERN_delta_handler ()
	this is the kernel delta list handler. It is called by the periodic timer interrupe. More...
int	KERN_create (void *function)
	starts a new thread. More...
void	KERN_schedule (void)
	this is the scheduler. It is either called by the periodic timer interrupt or from a user thread. More...
int	getpid ()
	returns the current process ID. More...
int	KERN_suspend (int i)
	suspend a thread. More...
int	wakeup (int i)
Variables
process	_KERN_ptable [MAX_PROCESSNUM]
	The process table. More...
list	_KERN_delta
	kernel delta queue. More...
list	_KERN_prio [MAX_PRIONUM+1]

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Detailed Description

Definition in file schedule.h.

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Define Documentation

#define MAX_PRIONUM   16

size of the priority table. Definition at line 29 of file schedule.h. Referenced by KERN_create_prio, KERN_schedinit, and KERN_schedule.

#define MAX_PROCESSNUM   16

size of the process table. Incrementing makes things (slightly) slower. Definition at line 28 of file schedule.h. Referenced by kill.

#define NO_TASK   -1

marker for empty task. Definition at line 30 of file schedule.h. Referenced by KERN_create_prio, sem_destroy, sem_init, sem_post, and sem_wait.

#define RR_SCHEDULER

Definition at line 23 of file schedule.h.

#define STATE_EMPTY   0

thread slot not used. Definition at line 32 of file schedule.h. Referenced by KERN_create_prio, KERN_schedinit, KERN_schedule, KERN_suspend, and kill.

#define STATE_KILLED   4

thread in coma (almost dead). Definition at line 36 of file schedule.h.

#define STATE_READY   2

thread ready to roll. Definition at line 34 of file schedule.h. Referenced by KERN_create_prio, KERN_schedule, and KERN_wakeup.

#define STATE_RUNNING   1

thread is on CPU. Definition at line 33 of file schedule.h. Referenced by KERN_schedinit, and KERN_schedule.

#define STATE_SUSPEND   3

thread sleeping. Definition at line 35 of file schedule.h. Referenced by KERN_schedule, KERN_suspend, and KERN_wakeup.

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Function Documentation

int wakeup (  int    i )

Referenced by sem_destroy, and sem_post.

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Variable Documentation

list _KERN_delta

kernel delta queue. Definition at line 63 of file schedule.h.

list _KERN_prio[MAX_PRIONUM+1]

Definition at line 64 of file schedule.h.

struct process _KERN_ptable[MAX_PROCESSNUM]

The process table. Definition at line 61 of file schedule.h.

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