os_macin.h

引入事件驱动观念的抢占式多任务微型实时内核——MicroStar的设计与实现；提出基于事件的优先级这一新概念。

/**************** os_macIn.h**************/
/*            MacroStar 1.0a            */
/*          Zhengyuquan,2003.7,Beijing  */
/*           All rights reserved        */
/****************************************/
#if !(__COMMON_DEF_)
#define __COMMON_DEF_

#include <dos.h>

enum ErrorType
{
	NO_ERROR			   =0,
	WAIT_INVALID_EVENT     =1,    /*os_WaitEvent		:无效的事件对象句柄*/
	SET_INVALID_EVENT      =2,    /*os_SetEvent			:无效的事件对象句柄*/
	RESET_INVALID_EVENT    =3,    /*os_ResetEvent		:无效的事件对象句柄*/
	SET_EVENT_MODE         =4,    /*os_SetEvent			:无效的复位模式，请使用AUTO_RESET or HANDLE_RESET模式*/
	WAIT_INVALID_SEMAPHORE =5,    /*os_WaitSemaphore	:无效的信标对象句柄*/
	RELE_INVALID_SEMAPHORE =6,    /*os_ReleaseSemaphore :无效的信标对象句柄*/
	RELE_SEMA_TO_NULL      =7,    /*os_ReleaseSemaphore	:等待该信号的－个任务已不复存在*/
	RESUME_INVALID_TASK    =8,    /*os_Resume			:任务不存在*/
	WAIT_INVALID_OBJECT    =9,    /*os_WaitObjectTimeOut:无效的对象句柄*/
	KILL_INVALID_HTIMER    =10,   /*os_KillTimer		:无效的定时器句柄*/
	SET_INVALID_TIMERID	   =11,   /*os_SetTimer			:定时器ID不合法，有效值为0－31*/
	POST_INVALID_MSG	   =12,   /*os_PostMessage		:无效的消息值，  有效值为0－31*/
	SEND_INVALID_MSG	   =13,   /*os_SendMessage      :无效的消息值，  有效值为0－31*/
	SET_INVALID_PRIORITY   =14,   /*os_SetStaticPriority:无效的静态优先级，有效值为0-14*/
	TASK_ID_IS_USED	       =15,   /*os_CreateTask*/
	TASK_PRIO_IS_USED      =16,   /*os_CreateTask*/
	DEL_NULL_OBJECT        =17    /*os_DeleteObject*/

};


enum WorningType
{
	NO_WARNING			   =0,
	KILL_INVALID_TASK      =1,	  /*os_Kill				:任务不存在*/
	NOTIFY_NULL            =2,	  /*os_Notify			:任务不存在*/
	POST_MSG_TO_NULL       =3,	  /*os_PostMessage		:任务不存在*/
	SEND_MSG_TO_NULL       =4,	  /*os_SendMessage		:任务不存在*/
	KILL_UNUSED_TIMER	   =5,	  /*os_KillTimer		:该定时器并未使用*/
	DEL_WAITING_OBJECT     =6,	  /*os_DeleteObject*/
	REQ_INVALID_EVENT      =7,	  /*os_RequireEevent*/
	REQ_INVALID_SEMAPHORE  =8 	  /*os_RequireSemaphore*/
};


enum ObjectType
{
	EVENT_OBJECT,
	SEMAPHORE_OBJECT
};


enum 
{
	os_false =0,
	os_true =1
};


enum ResetEventMode
{
	AUTO_RESET   =0,
	HANDLE_RESET =1
};


enum WairObjectRet
{
	NOT_ENOUGH_TIMER,
	WAIT_SUCCESS,
	WAIT_TIME_OUT
};


#define MAX_PRIORITY_NUM 	16
#define MAX_TASK_NUM     	16
#define MAX_TIMER_NUM    	16
#define MAX_OBJECT_NUM   	16

#define SYSTEM_QUIT   	0
#define SLEEP_ID     	64
#define NULL_HOBJECT 	0
#define NULL_HEVENT  	0
#define NULL_HSEMAPHORE 0
#define NULL_OBJECT  	0
#define NULL_TIMER   	0xFF

#define HIGHBYTE( int_16_var ) *( (uchar*)(&int_16_var) + 1)
#define LOWBYTE( int_16_var )  *( (uchar*)(&int_16_var) )

#define LOCK_INT( )      disable( )
#define UNLOCK_INT( )    enable( )
#define LOCK_SCHEDULE( ) os_nLayers++
#define UNLOCK_SCHEDULE( ) os_nLayers--
#define LOCK_INT_EX( )	 disable( )
#define UNLOCK_INT_EX( ) enable( )


#ifdef _DEBUG
extern void _FAR os_ASSERT( int e,int errorType);
extern void _FAR os_WARNING( int e,int warningType);
#else
#define os_ASSERT( e,errorType )
#define os_WARNING(e,worningType)
#endif


#define os_GetCurrentTaskId( ) (int)(os_pCurTCB-os_tcbs)
#define os_SetSwitchFlag( )   os_flag|=0x01;
#define ENTER_CRITICAL_SEG( ) LOCK_SCHEDULE( )
#define LEAVE_CRITICAL_SEG( ) \
{\
UNLOCK_SCHEDULE( );\
if( os_flag&0x01 )os_Schedule( );\
}

#endif