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3D Game Engine Design, 2nd Edition
book

3D Game Engine Design, 2nd Edition

by David Eberly
November 2006
Intermediate to advanced content levelIntermediate to advanced
1040 pages
26h 31m
English
CRC Press
Content preview from 3D Game Engine Design, 2nd Edition
19.3 General Memory Management Concepts 883
Boolean in order to keep the pseudocode simple. In practice you can make this a 1-bit
quantity, using the high-order bit of the size variable.
class HeaderBlock
{
public:
bool Used;
unsigned int Size;
Block* Prev;
Block* Next;
};
class FooterBlock
{
public:
bool Used;
unsigned int Size;
};
It is possible to represent a doubly linked list with only a single pointer member
per object. The trick is to store the exclusive-or of the addresses of the previous and
next blocks. If P is the address of the previous block and N is the address of the
next block, the current block stores P N,where denotes the exclusive-or of
the address treated as integer values. Two useful properties for exclusive-or are P =
(P N) N and
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Publisher Resources

ISBN: 9781482267303