mcb.h

T-kernel 的extension源代码

/*
 *----------------------------------------------------------------------
 *    T-Kernel / Standard Extension
 *
 *    Copyright (C) 2006 by Ken Sakamura. All rights reserved.
 *    T-Kernel / Standard Extension is distributed 
 *      under the T-License for T-Kernel / Standard Extension.
 *----------------------------------------------------------------------
 *
 *    Version:   1.00.00
 *    Released by T-Engine Forum(http://www.t-engine.org) at 2006/8/11.
 *
 *----------------------------------------------------------------------
 */

/*
 *	mcb.h (file)
 *
 *	File management
 *	Map control block
 */

#ifndef _FM_MCB_H_
#define _FM_MCB_H_

/*
 * When the logical block size that can be mapped is restricted,
 * define MappableBlockSize.
 * Mapping can be performed only when the logical block size is a multiple of MappableBlockSize.
 */
#if VIRTUAL_ADDRESS
#  define MappableBlockSize	4096
#endif

/*
 * Define CanNotMapRecord when the record map can not be performed at all.
 */
#if CANNOT_MAP_RECORD
#  define CanNotMapRecord
#endif

/*
 * Map control block
 */
typedef struct MCB {
	QUEUE	fdq;		/* For connection of the map control block from FD */
	QUEUE	rcbq;		/* For connection of the map control block from RCB */
	ID	mid;		/* Map ID */
	W	mode;		/* Map mode */
} MCB;

#endif