#include <BlockAllocator.h>

Inheritance diagram for DD::Image::BlockAllocator:

Public Member Functions
	BlockAllocator (const char *allocatorName, const SmallBlockDefinition definition=SmallBlockDefinition())

void *	allocate (size_t size)

template<typename T >
T *	allocate (size_t numItems)

template<typename T >
T *	New ()

void	deallocate (void *memory)

template<typename T >
void	Delete (T *memory)

const char *	getName () const override

const char *	getType () const override

size_t	getAllocatorUsage () const override

size_t	getAllocatorHighWaterMark () const override

size_t	getRequestedUsage () const override

size_t	getRequestedHighWaterMark () const override

void	resetHighWaterMark () override

virtual const char *	getName () const =0
	Return the name for this allocator.

virtual const char *	getType () const =0
	Return the type name for this allocator (e.g. "HeapAllocator")

virtual size_t	getRequestedUsage () const =0
	Returns the sum total requested by the user.

virtual size_t	getAllocatorUsage () const

virtual size_t	getRequestedHighWaterMark () const =0
	Returns the high watermark for the requested allocations.

virtual size_t	getAllocatorHighWaterMark () const

virtual void	resetHighWaterMark ()=0
	Resets the high watermark for the allocator.

Additional Inherited Members
Static Public Member Functions inherited from DD::Image::IAllocator
template<typename T >
static T *	getAllocator (IAllocator *pAllocator)
	Helper function for returning a concrete allocator type.

Detailed Description

Block Allocator

This is a thread-safe allocator that, for particular sizes defined on construction, will allocate in blocks a given size and then use these instead of calling malloc

This stops lots of malloc calls, which will speed up slow system memory calls in most cases, at the expense of a memory overhead.

If a call is made to allocate outside the small block size, then it will call directly through to DD::Image::Memory::allocate()

It also tracks how much memory is currently being used by the given allocator instance