/**********************************************************************************
 * mk_sem.h                                                                         
 * coded by hspark@ce.cnu.ac.kr
 * date : 2002/06/23
 **********************************************************************************/

#ifndef __MK_SEM_H__
#define __MK_SEM_H__

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

#define	MK_SEMAPHORE_MAGIC		0xF3CD03E3L		/* Magic Value of Semaphore */
#pragma packed on
typedef struct mk_semaphore_struct {
	ULONG	s_Magic;
	LONG	s_Count;
	struct mk_pending_list_struct s_PendingList;
	struct mk_semaphore_struct	*s_Prev;
	struct mk_semaphore_struct	*s_Next;
	char	*s_pName;
} MK_SEMAPHORE;
#pragma packed off
extern struct mk_semaphore_struct	*MK_pSemaphoreListHead;
extern struct mk_semaphore_struct	*MK_pSemaphoreListTail;

/*-----------------------------------------------------------------
 * Internal Function
 *-----------------------------------------------------------------*/
void MK_SemaphoreInitialize(void);
MK_TASK *MK_GetSemaphorePendingTask(MK_SEMAPHORE *pSemaphore);
STATUS MK_SemaphoreInformation(struct mk_ddi_struct *pDDI);

/*-----------------------------------------------------------------
 * API Function
 *-----------------------------------------------------------------*/
STATUS MK_CreateSemaphore(MK_SEMAPHORE *pSemaphore, char *pName, int Count, 
						  BOOLEAN Options);
int MK_GetSemaphoreCount(MK_SEMAPHORE *pSemaphore);
int MK_DeleteSemaphore(MK_SEMAPHORE *pSemaphore);
STATUS MK_SemaphorePend(MK_SEMAPHORE *pSemaphore, long Ticks);
STATUS MK_SemaphorePost(MK_SEMAPHORE *pSemaphore);
STATUS MK_SemaphoreReset(MK_SEMAPHORE *pSemaphore, LONG Count);

#endif /* __MK_SEM_H__ */