You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
144 lines
3.0 KiB
144 lines
3.0 KiB
/*++
|
|
|
|
Copyright (c) 1989-1993 Microsoft Corporation
|
|
|
|
Module Name:
|
|
|
|
spxmem.h
|
|
|
|
Abstract:
|
|
|
|
This module contains memory management routines.
|
|
|
|
Author:
|
|
|
|
Nikhil Kamkolkar (nikhilk) 17-November-1993
|
|
|
|
Environment:
|
|
|
|
Kernel mode
|
|
|
|
Revision History:
|
|
|
|
--*/
|
|
|
|
|
|
#define QWORDSIZEBLOCK(Size) (((Size)+sizeof(LARGE_INTEGER)-1) & ~(sizeof(LARGE_INTEGER)-1))
|
|
#define SPX_MEMORY_SIGNATURE *(PULONG)"SPXM"
|
|
#define ZEROED_MEMORY_TAG 0xF0000000
|
|
#define SPX_TAG *((PULONG)"SPX ")
|
|
|
|
//
|
|
// Definitions for the block management package
|
|
//
|
|
typedef UCHAR BLKID;
|
|
|
|
// Add a BLKID_xxx and an entry to atalkBlkSize for every block client
|
|
#define BLKID_TIMERLIST (BLKID)0
|
|
#define BLKID_NDISSEND (BLKID)1
|
|
#define BLKID_NDISRECV (BLKID)2
|
|
#define NUM_BLKIDS (BLKID)3
|
|
|
|
typedef struct _BLK_CHUNK
|
|
{
|
|
struct _BLK_CHUNK * bc_Next; // Pointer to next in the link
|
|
SHORT bc_NumFrees; // Number of free blocks in the chunk
|
|
UCHAR bc_Age; // Number of invocations since the chunk free
|
|
BLKID bc_BlkId; // Id of the block
|
|
struct _BLK_HDR * bc_FreeHead; // Head of the list of free blocks
|
|
|
|
#ifndef SPX_OWN_PACKETS
|
|
PVOID bc_ChunkCtx; // Used to store pool header if not own
|
|
// packets
|
|
#else
|
|
PVOID bc_Padding; // Keep the header 16 bytes
|
|
#endif
|
|
|
|
// This is followed by an array of N blks of size M such that the block header
|
|
// is exactly spxChunkSize[i]
|
|
|
|
} BLK_CHUNK, *PBLK_CHUNK;
|
|
|
|
typedef struct _BLK_HDR
|
|
{
|
|
union
|
|
{
|
|
struct _BLK_HDR * bh_Next; // Valid when it is free
|
|
struct _BLK_CHUNK * bh_pChunk; // The parent chunk to which this blocks belong
|
|
// valid when it is allocated
|
|
};
|
|
PVOID bh_Padding; // Make the header 8 bytes
|
|
} BLK_HDR, *PBLK_HDR;
|
|
|
|
#define BC_OVERHEAD (8+8) // LARGE_INTEGER for SpxAllocMemory() header and
|
|
// POOL_HEADER for ExAllocatePool() header
|
|
|
|
#define BLOCK_POOL_TIMER 1000 // Check interval (1 sec)
|
|
#define MAX_BLOCK_POOL_AGE 3 // # of timer invocations before free
|
|
|
|
ULONG
|
|
spxBPAgePool(
|
|
IN PVOID Context,
|
|
IN BOOLEAN TimerShuttingDown);
|
|
|
|
|
|
#ifdef TRACK_MEMORY_USAGE
|
|
|
|
#define SpxAllocateMemory(Size) SpxAllocMem((Size), FILENUM | __LINE__)
|
|
|
|
extern
|
|
PVOID
|
|
SpxAllocMem(
|
|
IN ULONG Size,
|
|
IN ULONG FileLine
|
|
);
|
|
|
|
extern
|
|
VOID
|
|
SpxTrackMemoryUsage(
|
|
IN PVOID pMem,
|
|
IN BOOLEAN Alloc,
|
|
IN ULONG FileLine
|
|
);
|
|
|
|
#else
|
|
|
|
#define SpxAllocateMemory(Size) SpxAllocMem(Size)
|
|
#define SpxTrackMemoryUsage(pMem, Alloc, FileLine)
|
|
|
|
extern
|
|
PVOID
|
|
SpxAllocMem(
|
|
IN ULONG Size
|
|
);
|
|
|
|
#endif // TRACK_MEMORY_USAGE
|
|
|
|
VOID
|
|
SpxFreeMemory(
|
|
IN PVOID pBuf);
|
|
|
|
#define SpxAllocateZeroedMemory(Size) SpxAllocateMemory((Size) | ZEROED_MEMORY_TAG)
|
|
|
|
|
|
extern
|
|
NTSTATUS
|
|
SpxInitMemorySystem(
|
|
IN PDEVICE pSpxDevice);
|
|
|
|
extern
|
|
VOID
|
|
SpxDeInitMemorySystem(
|
|
IN PDEVICE pSpxDevice);
|
|
|
|
PVOID
|
|
SpxBPAllocBlock(
|
|
IN BLKID BlockId);
|
|
|
|
VOID
|
|
SpxBPFreeBlock(
|
|
IN PVOID pBlock,
|
|
IN BLKID BlockId);
|
|
|
|
PNDIS_PACKET
|
|
GrowSPXPacketList(void);
|