cxheap.h

一个用新方法实现的堆管理器

#ifndef HFILE_CxHeapMem
#define HFILE_CxHeapMem
#include "cxheapdef.h"

#define CFG_ArgChkLv 2
#define CFG_CxHeapMT 1
#define CFG_CxHeapCnt 2
typedef unsigned int TYP_PAGECNT;
typedef unsigned int TYP_PAGESIZE;
typedef struct _DS_HeapControlBlock
{
	U8		isInuse;
	TYP_PAGECNT 	pageCnt;		//Counts of pages in this heap
	TYP_PAGESIZE 	pageSize;	//Size of page in this heap
	U8		pageSizeIn2Pow;
	U8*		pHeap;		//Pointer to this heap
	U8*		pHpSt;		//Pointer to the usage state of this heap
	U16		fstFreePage;
	U32		allocCnt;
	U32		allocPageCnt;
#if CFG_CxHeapMT!=0
	void	*mtx;
#endif
}DS_HCB;
#define CAP_MaxHeapPageIn2Pow	15
#define CAP_MinHeapPageIn2Pow	3
#define ERR_HeapPageTooLarge		0xfe
#define CFG_ArgChkLv			2
U8 CxHeapInits(DS_HCB *pHCB);
DS_HCB* CxHeapCreate(U16 heapSize, U16 pageSizeIn2Pow, U8 *pHeapMem);
U8 *CxHeapAlloc(U8 pageCnt, DS_HCB *pHCB);
U8 *CxHeapAllocBytes(U32 byteCnt, DS_HCB *pHCB);
U8 CxHeapFree(U8 *pHeap, DS_HCB *pHCB);
void CxHeapInitMutex(DS_HCB *pHcb);
void CxHeapUnlock(DS_HCB *pHcb);
void CxHeapLock(DS_HCB *pHcb);
void CxHeapEnterCritical(void);
void CxHeapExitCritical(void);
#endif