68 lines
1 KiB
C
68 lines
1 KiB
C
|
#if !defined(MINIHEAP_H_INC)
|
||
|
|
#define MINIHEAP_H_INC
|
||
|
|
|
||
|
|
|
||
|
|
class CMiniHeap
|
||
|
|
{
|
||
|
|
char *mHeap;
|
||
|
|
char *mCurrentHeap;
|
||
|
|
int mSize;
|
||
|
|
#if _DEBUG
|
||
|
|
int mMaxAlloc;
|
||
|
|
#endif
|
||
|
|
public:
|
||
|
|
|
||
|
|
// reset the heap back to the start
|
||
|
|
void ResetHeap()
|
||
|
|
{
|
||
|
|
#if _DEBUG
|
||
|
|
if ((int)mCurrentHeap - (int)mHeap>mMaxAlloc)
|
||
|
|
{
|
||
|
|
mMaxAlloc=(int)mCurrentHeap - (int)mHeap;
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
mCurrentHeap = mHeap;
|
||
|
|
}
|
||
|
|
|
||
|
|
// initialise the heap
|
||
|
|
CMiniHeap(int size)
|
||
|
|
{
|
||
|
|
mHeap = (char *)Z_Malloc(size, TAG_GHOUL2, qtrue);
|
||
|
|
mSize = size;
|
||
|
|
#if _DEBUG
|
||
|
|
mMaxAlloc=0;
|
||
|
|
#endif
|
||
|
|
if (mHeap)
|
||
|
|
{
|
||
|
|
ResetHeap();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// free up the heap
|
||
|
|
~CMiniHeap()
|
||
|
|
{
|
||
|
|
if (mHeap)
|
||
|
|
{
|
||
|
|
// the quake heap will be long gone, no need to free it Z_Free(mHeap);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// give me some space from the heap please
|
||
|
|
char *MiniHeapAlloc(int size)
|
||
|
|
{
|
||
|
|
if (size < (mSize - ((int)mCurrentHeap - (int)mHeap)))
|
||
|
|
{
|
||
|
|
char *tempAddress = mCurrentHeap;
|
||
|
|
mCurrentHeap += size;
|
||
|
|
return tempAddress;
|
||
|
|
}
|
||
|
|
return NULL;
|
||
|
|
}
|
||
|
|
|
||
|
|
};
|
||
|
|
|
||
|
|
extern CMiniHeap *G2VertSpaceServer;
|
||
|
|
|
||
|
|
|
||
|
|
#endif //MINIHEAP_H_INC
|