Proud::CLookasideAllocator Class Reference

Public Member Functions
virtual void *	Alloc (size_t size)=0
virtual void	Free (void *ptr)=0
virtual int	DebugCheckConsistency ()=0

Static Public Member Functions
static CLookasideAllocator *	New (const CFastHeapSettings &settings=CFastHeapSettings())

Detailed Description

Performs very high speed memory allocation/disengagement but there are some restrictions.

• Memory of same size can only be allocated at all time.
• The object allocated by this cannot be global variable. In other words, the destruction time of this allocator must come prior to the desruction time of allocated object.

Characteristics

• Allocate memory block of memory page unit in advance and then use it, so it is recommended not to make too many CLookasideAllocator instances.
• Memory page is allocated to VirtualAlloc. Since it will not create internal fragmentation, it brings an effect of reducing the size of win32 working set.

Member Function Documentation

virtual void* Proud::CLookasideAllocator::Alloc ( size_t  size )

pure virtual

Allocate memory.

virtual int Proud::CLookasideAllocator::DebugCheckConsistency ( )

pure virtual

This is thread safe by default. the option can change to thread unsafe in order to accelerate.

• Must be careful when use this.

virtual void Proud::CLookasideAllocator::Free ( void *  ptr )

pure virtual

Disengage the allocated memory.

static CLookasideAllocator* Proud::CLookasideAllocator::New ( const CFastHeapSettings &  settings = CFastHeapSettings() )

static

Creates a new Lookaside allocator

Parameters

settings

Can set the initial attributes. This is a neglectable parameter.