FixedSizeAllocator Struct Reference

Detailed Description

This is a fixed size allocator implementation for the abstract interface class AllocatorIntf.

The FixedSizeAllocator takes a buffer and splits the buffer up into equally sized chunks. Allocating memory larger than the chunk size or using realloc results in an error; i.e., NULL returned. One can allocate a smaller size than the chunk size, but the size will be adjusted to the chunk size.

#include <FixedSizeAllocator.h>

Inheritance diagram for FixedSizeAllocator:

Public Member Functions
	FixedSizeAllocator (void *buffer, size_t bufSize, size_t blockSize)
	Create a fixed size allocator. More...
Public Member Functions inherited from AllocatorIntf
	AllocatorIntf (AllocatorIntf_Malloc malloc, AllocatorIntf_Realloc realloc, AllocatorIntf_Free free)
	Create an instance of a memory allocation class. More...
void *	malloc (size_t *size)
	Returns pointer to uninitialized newly-allocated space for an object of size "size", or NULL on error. More...
void *	realloc (void *p, size_t *size)
	Returns pointer to newly-allocated space for an object of size "size", initialized, to minimum of old and new sizes, to existing contents of p (if non-null), or NULL on error. More...
void	free (void *p)
	Deallocates space to which it points.

Additional Inherited Members
Static Public Member Functions inherited from AllocatorIntf
static AllocatorIntf *	getDefault (void)
	Returns a pointer to a predefined AllocatorIntf class. More...

Constructor & Destructor Documentation

FixedSizeAllocator()

FixedSizeAllocator::FixedSizeAllocator	(	void *	buffer,
		size_t	bufSize,
		size_t	blockSize
	)

Create a fixed size allocator.

Parameters

buffer	a pointer to the memory location for the fixed size allocator.
bufSize	the size of the buffer. The size should be n*blockSize.
blockSize	the size of the chunks.