b2SlabAllocator< T > Class Template Reference

#include <b2SlabAllocator.h>

Public Member Functions
	b2SlabAllocator (const uint32 itemsPerSlab)
	~b2SlabAllocator ()
	Free all allocated slabs.
void	SetItemsPerSlab (uint32 itemsPerSlab)
uint32	GetItemsPerSlab () const
T *	Allocate ()
	Allocate a item from the slab.
void	Free (T *object)
	Free an item from the slab.
bool	AllocateSlab ()
void	FreeAllSlabs ()
	Free all slabs.
void	FreeEmptySlabs ()
const b2TypedFreeList< T > &	GetFreeList () const
	Get the item allocator freelist.

Detailed Description

template<typename T>
class b2SlabAllocator< T >

Freelist based allocator for fixed sized items from slabs (memory preallocated from the heap). T should be a class which has a default constructor and implements the member function "b2IntrusiveList* GetListNode()". All objects in a slab are constructed when a slab is created and destructed when a slab is freed.

Constructor & Destructor Documentation

template<typename T>

b2SlabAllocator< T >::b2SlabAllocator ( const uint32  itemsPerSlab )

inline

Initialize the allocator to allocate itemsPerSlab of type T for each slab that is allocated.

Member Function Documentation

template<typename T>

bool b2SlabAllocator< T >::AllocateSlab ( )

inline

Allocate a slab, construct instances of T and add them to the free pool.

template<typename T>

void b2SlabAllocator< T >::FreeEmptySlabs ( )

inline

Free all empty slabs. This method is slow - O(M^N) - since this class doesn't track the association between each item and slab.

template<typename T>

void b2SlabAllocator< T >::SetItemsPerSlab ( uint32  itemsPerSlab )

inline

Set size of the next allocated slab using the number of items per slab. Setting this value to zero disables further slab allocation.

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The documentation for this class was generated from the following file:

• b2SlabAllocator.h