OsTask.h File Reference

Header file related to task. More...

Go to the source code of this file.

Data Structures
struct	TCB
	Task control blcok. More...
Defines
#define	SYS_TASK_NUM   (1)
#define	TASK_READY   0
#define	TASK_RUNNING   1
#define	TASK_WAITING   2
#define	TASK_DORMANT   3
Functions
void	Schedule (void)
	Schedule function.
void	IdleTask (void *pdata)
void	InsertToTCBRdyList (P_OSTCB tcbInser)
	Insert a task to the ready list.
void	RemoveFromTCBRdyList (P_OSTCB ptcb)
	Remove a task from the READY list.
void	CreateTCBList (void)
	Create a TCB list.
void	ActiveTaskPri (U8 pri)
	Active priority in queue.
void	DeleteTaskPri (U8 pri)
	Delete priority in queue.
Variables
P_OSTCB	FreeTCB
OSTCB	TCBTbl [CFG_MAX_USER_TASKS+SYS_TASK_NUM]
P_OSTCB	TCBRdy
P_OSTCB	TCBNext
P_OSTCB	TCBRunning
U64	OSCheckTime
volatile U8	OSIntNesting
volatile U8	OSSchedLock

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Detailed Description

Header file related to task.

Version:

V1.1.3

Date:

2010.04.26

This file including some defines and function declare related to task.

INTERNAL FILE,DON'T PUBLIC.

© COPYRIGHT 2009 CooCox

Definition in file OsTask.h.

---

Define Documentation

#define SYS_TASK_NUM   (1)

System task number.

Definition at line 20 of file OsTask.h.

#define TASK_DORMANT   3

Dormant status of task.

Definition at line 26 of file OsTask.h.

#define TASK_READY   0

Ready status of task.

Definition at line 23 of file OsTask.h.

#define TASK_RUNNING   1

Running status of task.

Definition at line 24 of file OsTask.h.

#define TASK_WAITING   2

Waitting status of task.

Definition at line 25 of file OsTask.h.

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Function Documentation

void ActiveTaskPri

(

U8

pri )

Active priority in queue.

Parameters:

[in]	pri	Task priority
[in]	None
[out]	None

Return values:

None

Description

This function is called in Binary-Scheduling Algorithm to active priority in queue, if this priority had been in activation, increate the task num for this priority.

Definition at line 296 of file task.c.

void CreateTCBList

(

void

)

Create a TCB list.

Parameters:

[in]	None
[out]	None

Return values:

None

Description

This function is called by CoOSInit() to initial the empty list of OS_TCBS,supply a pointer to free TCB.

Definition at line 55 of file task.c.

void DeleteTaskPri

(

U8

pri )

Delete priority in queue.

Parameters:

[in]	pri	Task priority
[in]	None
[out]	None

Return values:

None

Description

This function is called in Binary-Scheduling Algorithm to decrease the task num for this priority, if the num goto 0, remove the priority for queue.

Definition at line 335 of file task.c.

void IdleTask

(

void *

pdata )

IDLE task code

void InsertToTCBRdyList

(

P_OSTCB

tcbInsert )

Insert a task to the ready list.

Parameters:

[in]	tcbInsert	A pointer to task will be inserted.
[out]	None

Return values:

None

Description

This function is called to insert a task to the READY list.

Definition at line 368 of file task.c.

void RemoveFromTCBRdyList

(

P_OSTCB

ptcb )

Remove a task from the READY list.

Parameters:

[in]	ptcb	A pointer to task which be removed.
[out]	None

Return values:

None

Description

This function is called to remove a task from the READY list.

Definition at line 491 of file task.c.

void Schedule

(

void

)

Schedule function.

Schedule function

Parameters:

[in]	None
[out]	None

Return values:

None

Description

This function is called by every where need to switch context, It is schedule function of OS kernel.

Definition at line 710 of file task.c.

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Variable Documentation

P_OSTCB FreeTCB

A pointer to free TCB.

pointer to free TCB

Definition at line 28 of file task.c.

U64 OSCheckTime

The counter of system tick.

Definition at line 32 of file task.c.

volatile U8 OSIntNesting

Use to indicate interrupt nesting level.

Use to indicate interrupt nesting level

Definition at line 20 of file core.c.

volatile U8 OSSchedLock

Schedule is lock(LOCK) or unlock(UN_LOCK).

Task Switch lock.

Definition at line 21 of file core.c.

P_OSTCB TCBNext

A pointer to TCB next be scheduled.

Poniter to task that next scheduled by OS

Definition at line 30 of file task.c.

P_OSTCB TCBRdy

A pointer to TCB that is ready status

Pointer to the READY list.

Definition at line 29 of file task.c.

P_OSTCB TCBRunning

A pointer to TCB that is running.

Pointer to TCB that current running task.

Definition at line 31 of file task.c.

OSTCB TCBTbl[CFG_MAX_USER_TASKS+SYS_TASK_NUM]

< Table use to save TCB pointer. The stack of IDLE task.

Definition at line 23 of file task.c.