memp.c File Reference

Functions
u8_t *	mem_barrelfish_alloc (uint8_t buf_index, uint32_t size)
void	memp_init (void)
void *	memp_malloc (memp_t type)
void	memp_free (memp_t type, void *mem)

Detailed Description

Dynamic pool memory manager

lwIP has dedicated pools for many structures (netconn, protocol control blocks, packet buffers, ...). All these pools are managed here.

Function Documentation

u8_t* mem_barrelfish_alloc	(	uint8_t	binding_index,
		uint32_t	size
	)

Used to allocate memory for RX/TX buffers in lwip. At the moment it must * only be called once for each binding (2 total).

void memp_free	(	memp_t	type,
		void *	mem
	)

Put an element back into its pool.

Parameters

type	the pool where to put mem
mem	the memp element to free

void memp_init

(

void

)

Initialize this module.

Carves out memp_memory into linked lists for each pool-type.

void* memp_malloc

(

memp_t

type

)

Get an element from a specific pool.

Parameters

type	the pool to get an element from

the debug version has two more parameters:

Parameters

file	file name calling this function
line	number of line where this function is called

Returns

a pointer to the allocated memory or a NULL pointer on error