Leaked source code of windows server 2003
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/*==========================================================================
*
* Copyright (C) 1995 - 1997 Microsoft Corporation. All Rights Reserved.
*
* File: fpm.h
* Content: fixed size pool manager
*
* History:
* Date By Reason
* ====== == ======
* 12-18-97 aarono Original
***************************************************************************/
#ifndef _FPM_H_
#define _FPM_H_
typedef struct FPOOL *PFPOOL, *LPFPOOL;
typedef BOOL (*FN_BLOCKINITALLOC)(void * pvItem);
typedef VOID (*FN_BLOCKINIT)(void * pvItem);
typedef VOID (*FN_BLOCKFINI)(void *pvItem);
LPFPOOL FPM_Init(
unsigned int size, // size of blocks in pool
FN_BLOCKINITALLOC fnBlockInitAlloc, // fn called for each new alloc
FN_BLOCKINIT fnBlockInit, // fn called each time block used
FN_BLOCKFINI fnBlockFini // fn called before releasing mem
);
typedef void * (*FPM_GET)(LPFPOOL pPool);
typedef void (*FPM_RELEASE)(LPFPOOL pPool, void *pvItem);
typedef void (*FPM_SCALE)(LPFPOOL pPool);
typedef void (*FPM_FINI)(LPFPOOL pPool, int bFORCE);
typedef struct FPOOL {
// external
FPM_GET Get;
FPM_RELEASE Release;
FPM_SCALE Scale;
FPM_FINI Fini;
// internal
FN_BLOCKINITALLOC fnBlockInitAlloc;
FN_BLOCKINIT fnBlockInit;
FN_BLOCKFINI fnBlockFini;
int cbItemSize;
void * pPool;
int nAllocated;
int nInUse;
int nMaxInUse;
int bInScale;
CRITICAL_SECTION cs;
} FPOOL, *LPFPOOL, *PFPOOL;
#endif