mirror of
https://github.com/reactos/reactos.git
synced 2024-08-05 11:00:55 +00:00
54 lines
1.5 KiB
C
54 lines
1.5 KiB
C
/*
|
|
* COPYRIGHT: GPL - See COPYING in the top level directory
|
|
* PROJECT: ReactOS Virtual DOS Machine
|
|
* FILE: subsystems/mvdm/ntvdm/dos/dos32krnl/memory.h
|
|
* PURPOSE: DOS32 Memory Manager
|
|
* PROGRAMMERS: Aleksandar Andrejevic <theflash AT sdf DOT lonestar DOT org>
|
|
* Hermes Belusca-Maito (hermes.belusca@sfr.fr)
|
|
*/
|
|
|
|
#ifndef _DOS_MEMORY_H_
|
|
#define _DOS_MEMORY_H_
|
|
|
|
/* TYPEDEFS *******************************************************************/
|
|
|
|
#define SEGMENT_TO_MCB(seg) ((PDOS_MCB)SEG_OFF_TO_PTR((seg), 0))
|
|
|
|
#define DOS_ALLOC_HIGH 0x40
|
|
#define DOS_ALLOC_HIGH_LOW 0x80
|
|
|
|
enum DOS_ALLOC_STRATEGY
|
|
{
|
|
DOS_ALLOC_FIRST_FIT,
|
|
DOS_ALLOC_BEST_FIT,
|
|
DOS_ALLOC_LAST_FIT
|
|
};
|
|
|
|
#pragma pack(push, 1)
|
|
typedef struct _DOS_MCB
|
|
{
|
|
CHAR BlockType;
|
|
WORD OwnerPsp;
|
|
WORD Size;
|
|
BYTE Unused[3];
|
|
CHAR Name[8];
|
|
} DOS_MCB, *PDOS_MCB;
|
|
C_ASSERT(sizeof(DOS_MCB) == 0x10);
|
|
#pragma pack(pop)
|
|
|
|
/* VARIABLES ******************************************************************/
|
|
|
|
/* FUNCTIONS ******************************************************************/
|
|
|
|
WORD DosAllocateMemory(WORD Size, WORD *MaxAvailable);
|
|
BOOLEAN DosResizeMemory(WORD BlockData, WORD NewSize, WORD *MaxAvailable);
|
|
BOOLEAN DosFreeMemory(WORD BlockData);
|
|
BOOLEAN DosLinkUmb(VOID);
|
|
BOOLEAN DosUnlinkUmb(VOID);
|
|
VOID DosChangeMemoryOwner(WORD Segment, WORD NewOwner);
|
|
|
|
VOID DosInitializeUmb(VOID);
|
|
VOID DosInitializeMemory(VOID);
|
|
|
|
#endif /* _DOS_MEMORY_H_ */
|