memory array allocator

memory array allocator More...

Detailed Description

memory array allocator

pseudo dynamic allocation in static memory arrays

Author

Tobias Heider heide.nosp@m.rt@n.nosp@m.m.ifi.nosp@m..lmu.nosp@m..de

Data Structures
struct	memarray_t
	Memory pool. More...

Functions
void	memarray_init (memarray_t *mem, void *data, size_t size, size_t num)
	Initialize memarray pool with free list. More...
void *	memarray_alloc (memarray_t *mem)
	Allocate memory chunk in memarray pool. More...
void *	memarray_calloc (memarray_t *mem)
	Allocate and clear memory chunk in memarray pool. More...
void	memarray_free (memarray_t *mem, void *ptr)
	Free memory chunk in memarray pool. More...

Function Documentation

memarray_alloc()

void* memarray_alloc

(

memarray_t *

mem

)

Allocate memory chunk in memarray pool.

Precondition

mem != NULL

Note

Allocated structure is not cleared before returned

Parameters

[in,out]

mem

memarray pool to allocate block in

Returns

pointer to allocated structure, if enough memory was available

NULL, on failure

memarray_calloc()

void* memarray_calloc

(

memarray_t *

mem

)

Allocate and clear memory chunk in memarray pool.

Precondition

mem != NULL

Parameters

[in,out]

mem

memarray pool to allocate block in

Returns

pointer to allocated structure, if enough memory was available

NULL, on failure

memarray_free()

void memarray_free	(	memarray_t *	mem,
		void *	ptr
	)

Free memory chunk in memarray pool.

Precondition

mem != NULL

ptr != NULL

Parameters

[in,out]	mem	memarray pool to free block in
[in]	ptr	pointer to memarray chunk

memarray_init()

void memarray_init	(	memarray_t *	mem,
		void *	data,
		size_t	size,
		size_t	num
	)

Initialize memarray pool with free list.

Precondition

mem != NULL

data != NULL

size >= sizeof(void*)

num != 0

Parameters

[in,out]	mem	memarray pool to initialize
[in]	data	pointer to user-allocated data
[in]	size	size of a single element in data
[in]	num	number of elements in data