#ifndef	EXEC_MEMORY_H
#define	EXEC_MEMORY_H
/*
**
**	Definitions and structures used by the memory allocation system
**
**	(C) Copyright 1985,1986,1987,1988,1989,1990 Commodore-Amiga, Inc.
**	    All Rights Reserved
*/

#ifndef EXEC_NODES_H
#include "exec/nodes.h"
#endif !EXEC_NODES_H


/****** MemChunk ****************************************************/

struct  MemChunk {
    struct  MemChunk *mc_Next;  /* pointer to next chunk */
    ULONG   mc_Bytes;           /* chunk byte size      */
};


/****** MemHeader ***************************************************/

struct  MemHeader {
    struct  Node mh_Node;
    UWORD   mh_Attributes;      /* characteristics of this region */
    struct  MemChunk *mh_First; /* first free region            */
    APTR    mh_Lower;           /* lower memory bound           */
    APTR    mh_Upper;           /* upper memory bound+1         */
    ULONG   mh_Free;            /* total number of free bytes   */ 
};


/****** MemEntry ****************************************************/

struct  MemEntry {
union {
    ULONG   meu_Reqs;           /* the AllocMem requirements */
    APTR    meu_Addr;           /* the address of this memory region */
    } me_Un;
    ULONG   me_Length;          /* the length of this memory region */
};

#define me_un       me_Un       /* compatibility - do not use*/
#define me_Reqs     me_Un.meu_Reqs
#define me_Addr     me_Un.meu_Addr


/****** MemList *****************************************************/

/* Note: sizeof(struct MemList) includes the size of the first MemEntry! */
struct  MemList {
    struct  Node ml_Node;
    UWORD   ml_NumEntries;      /* number of entries in this struct */
    struct  MemEntry ml_ME[1];  /* the first entry      */
};

#define ml_me   ml_ME           /* compatability - do not use */


/*----- Memory Requirement Types ---------------------------*/
/*----- See the AllocMem() documentation for details--------*/

#define MEMF_ANY    (0L)	/* Any type of memory will do */
#define MEMF_PUBLIC (1L<<0)
#define MEMF_CHIP   (1L<<1)
#define MEMF_FAST   (1L<<2)
#define MEMF_LOCAL  (1L<<8)

#define MEMF_CLEAR   (1L<<16)
#define MEMF_LARGEST (1L<<17)
#define MEMF_REVERSE (1L<<18)
#define MEMF_TOTAL   (1L<<19)	/* AvailMem: return total size of memory */

#define MEM_BLOCKSIZE   8L
#define MEM_BLOCKMASK   (MEM_BLOCKSIZE-1)

#endif	/* EXEC_MEMORY_H */