imalloc.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.
 *
 *----------------------------------------------------------------------
 */

/*
 *	imalloc.h
 *
 *	Memory allocation for kernel
 *
 *	Function of allocating memory used in part of T-Kernel.
 *	Generally, it must not be used from application.
 */

#ifndef __SYS_IMALLOC_H__
#define __SYS_IMALLOC_H__

#include <basic.h>
#include <tk/typedef.h>
#include <tk/sysmgr.h>

#ifdef __cplusplus
extern "C" {
#endif

/*
 * Allocate resident memory with the lowest possible protection level (TSVCLimit)
 * that allows T-Kernel's system call.
 */
IMPORT void*	Imalloc( size_t size );
IMPORT void*	Icalloc( size_t nmemb, size_t size );
IMPORT void	Ifree( void *ptr );

/*
 * Allocate memory whose attribute is specified by attr.
 *	attr = TA_RNGn | TA_NORESIDENT
 */
IMPORT void*	IAmalloc( size_t size, UINT attr );
IMPORT void*	IAcalloc( size_t nmemb, size_t size, UINT attr );
IMPORT void	IAfree( void *ptr, UINT attr );

/*
 * In either case, malloc and calloc cannot be called while interrupt and dispatch
 * are disabled.
 * In either case, only free can be called while interrupt and dispatch are disabled.
 * However, a memory area may not be freed completely in this case, so it is desirable
 * to call it while both interrupt and dispatch are enabled.
 * If a memory area is not freed completely, the area is subsequently allocated
 * by malloc and calloc.
 */

/* ------------------------------------------------------------------------ */

/*
 * System memory management on a block basis
 */
IMPORT VP	GetSysMemBlk( INT nblk, UINT attr );
IMPORT ER	RelSysMemBlk( VP addr );
IMPORT ER	RefSysMemInfo( T_RSMB *rsmb );

#ifdef __cplusplus
}
#endif
#endif /* __SYS_IMALLOC_H__ */