/* $Id: os2heap.h,v 1.11 2002年01月06日 16:48:47 sandervl Exp $ */ /* * * Project Odin Software License can be found in LICENSE.TXT * */ /* * Heap class for OS/2 * * Copyright 1998 Sander van Leeuwen * */ #ifndef __OS2HEAP_H__ #define __OS2HEAP_H__ #include "vmutex.h" #include #define MAGIC_NR_HEAP 0x87654321 //must be a multiple of 8 bytes (alignment)!! typedef struct _tagHEAPELEM { DWORD magic; //magic number LPVOID lpMem; //pointer returned by malloc DWORD cursize; //current size (HeapReAlloc changes this) DWORD orgsize; //size used to allocate this memory block } HEAPELEM; #define HEAP_ALIGNMENT 8 #define HEAP_ALIGNMENT_MASK (~7) #define HEAP_OVERHEAD (sizeof(HEAPELEM)) #define HEAP_ALIGN(a) (((DWORD)a+HEAP_ALIGNMENT-1) & HEAP_ALIGNMENT_MASK) #define GET_HEAPOBJ(ptr) (HEAPELEM *)((char *)ptr - sizeof(HEAPELEM)); class OS2Heap { public: OS2Heap(DWORD flOptions, DWORD dwInitialSize, DWORD dwMaximumSize); ~OS2Heap(); HANDLE getHeapHandle() { return(hPrimaryHeap); }; LPVOID Alloc(DWORD dwFlags, DWORD dwBytes); LPVOID ReAlloc(DWORD dwFlags, LPVOID lpMem, DWORD dwBytes); BOOL Free(DWORD dwFlags, LPVOID lpMem); DWORD Size(DWORD dwFlags, PVOID lpMem); DWORD Compact(DWORD dwFlags); BOOL Validate(DWORD dwFlags, LPCVOID lpMem); BOOL Walk(void *lpEntry); static OS2Heap *find(HANDLE hHeap); private: protected: DWORD dwMaximumSize, dwInitialSize, flOptions, nrHeaps; #ifdef DEBUG DWORD totalAlloc; #endif HANDLE hPrimaryHeap; BOOL fInitialized; HEAPELEM *heapelem; char *pInitialHeapMem; Heap_t uheap; OS2Heap *next; static OS2Heap *heap; }; #endif