mk_mport.h

samsung 9908DVD源代码,

/**********************************************************************************
 * mk_mport.h                                                                         
 * coded by [e-mail]
 * date : 2002/06/23
 **********************************************************************************/

#ifndef __MK_MPORT_H__
#define __MK_MPORT_H__

#include "kernel\\mk_defs.h"
#include "kernel\\mk_sem.h"

#define	MK_PORT_MAGIC		0xF3CD03E5L		/* Magic Value of Message Port */

typedef struct mk_port_msg_struct {
	ULONG 	pm_Msg;							/* Msg Pointer */
	ULONG	pm_MsgLength;
	ULONG	pm_BufLength;
	struct mk_port_msg_struct	*pm_pNext;
} MK_PORT_MSG;

typedef struct mk_message_port_struct {
	ULONG	p_Magic;
	INT		p_MsgCount;
	INT		p_MaxMsg;
	char	*p_Name;
	struct mk_message_port_struct	*p_pNext;
	struct mk_message_port_struct	*p_pPrev;
	struct mk_port_msg_struct *p_pMsgFreeList;
	struct mk_port_msg_struct *p_pMsgListHead;
	struct mk_port_msg_struct *p_pMsgListTail;
	struct mk_semaphore_struct p_SendSemaphore;
	struct mk_semaphore_struct p_ReceiveSemaphore;
} MK_PORT;

extern MK_PORT	*MK_pMsgPortListHead;
extern MK_PORT	*MK_pMsgPortListTail;

/*-----------------------------------------------------------------
 * Internal Function
 *-----------------------------------------------------------------*/
void MK_MsgPortInitialze(void);

/*-----------------------------------------------------------------
 * API Function
 *-----------------------------------------------------------------*/
STATUS MK_CreateMsgPort(MK_PORT *pPort, char *pName, void *pAddr, 
						int MsgCount, BOOLEAN Options);
ULONG MK_GetMsgPortMemorySize(UINT MsgCount);
STATUS MK_DeleteMsgPort(MK_PORT *pPort);
UINT MK_GetMsgPortCount(MK_PORT *pPort);
STATUS MK_MsgPortPend(MK_PORT *pPort, void **pMessage, LONG *pMsgLength, 
					  LONG *pBufLength, long Ticks);
STATUS MK_MsgPortPost(MK_PORT *pPort, char *pMessage, LONG pMsgLength, 
					  LONG pBufLength, long Ticks);

#endif /* __MK_MPORT_H__ */