memp.c File Reference

#include "lwip/opt.h"
#include "lwip/memp.h"
#include "lwip/sys.h"
#include "lwip/stats.h"
#include <string.h>
#include "lwip/pbuf.h"
#include "lwip/raw.h"
#include "lwip/udp.h"
#include "lwip/tcp.h"
#include "lwip/priv/tcp_priv.h"
#include "lwip/altcp.h"
#include "lwip/ip4_frag.h"
#include "lwip/netbuf.h"
#include "lwip/api.h"
#include "lwip/priv/tcpip_priv.h"
#include "lwip/priv/api_msg.h"
#include "lwip/priv/sockets_priv.h"
#include "lwip/etharp.h"
#include "lwip/igmp.h"
#include "lwip/timeouts.h"
#include "netif/ppp/ppp_opts.h"
#include "lwip/netdb.h"
#include "lwip/dns.h"
#include "lwip/priv/nd6_priv.h"
#include "lwip/ip6_frag.h"
#include "lwip/mld6.h"
#include "lwip/priv/memp_std.h"

Go to the source code of this file.

Macros
#define	LWIP_MEMPOOL(name, num, size, desc)
#define	LWIP_MEMPOOL(name, num, size, desc)
#define	LWIP_MALLOC_MEMPOOL(num, size)
#define	LWIP_MALLOC_MEMPOOL_START
#define	LWIP_MALLOC_MEMPOOL_END
#define	LWIP_PBUF_MEMPOOL(name, num, payload, desc)

Functions
void	memp_init_pool (const struct memp_desc *desc)
void	memp_init (void)
void *	memp_malloc_pool (const struct memp_desc *desc)
void *	memp_malloc (memp_t type)
void	memp_free_pool (const struct memp_desc *desc, void *mem)
void	memp_free (memp_t type, void *mem)

Variables
const struct memp_desc *const	memp_pools [MEMP_MAX]

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.

Definition in file memp.c.

Macro Definition Documentation

LWIP_MALLOC_MEMPOOL

#define LWIP_MALLOC_MEMPOOL	(		num,
			size )

Value:

LWIP_MEMPOOL(POOL_##size, num, (size + LWIP_MEM_ALIGN_SIZE(sizeof(struct memp_malloc_helper))), "MALLOC_"#size)

LWIP_MEMPOOL [1/2]

#define LWIP_MEMPOOL	(		name,
			num,
			size,
			desc )

Value:

&memp_ ## name,

Definition at line 78 of file memp.c.

LWIP_MEMPOOL [2/2]

#define LWIP_MEMPOOL	(		name,
			num,
			size,
			desc )

Value:

LWIP_MEMPOOL_DECLARE(name,num,size,desc)

Definition at line 78 of file memp.c.

LWIP_PBUF_MEMPOOL

#define LWIP_PBUF_MEMPOOL	(		name,
			num,
			payload,
			desc )

Value:

LWIP_MEMPOOL(name, num, (LWIP_MEM_ALIGN_SIZE(sizeof(struct pbuf)) + LWIP_MEM_ALIGN_SIZE(payload)), desc)

Function Documentation

memp_free()

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

Definition at line 420 of file memp.c.

memp_free_pool()

void memp_free_pool	(	const struct memp_desc *	desc,
		void *	mem )

Put a custom pool element back into its pool.

Parameters

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

Definition at line 403 of file memp.c.

memp_init()

void memp_init

(

void

)

Initializes lwIP built-in pools. Related functions: memp_malloc, memp_free

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

Definition at line 224 of file memp.c.

memp_init_pool()

void memp_init_pool

(

const struct memp_desc *

desc

)

Initialize custom memory pool. Related functions: memp_malloc_pool, memp_free_pool

Parameters

desc	pool to initialize

Definition at line 175 of file memp.c.

memp_malloc()

void * memp_malloc

(

memp_t

type

)

Get an element from a specific pool.

Parameters

type	the pool to get an element from

Returns

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

Definition at line 337 of file memp.c.

memp_malloc_pool()

void * memp_malloc_pool

(

const struct memp_desc *

desc

)

Get an element from a custom pool.

Parameters

desc	the pool to get an element from

Returns

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

Definition at line 311 of file memp.c.

Variable Documentation

memp_pools

const struct memp_desc* const memp_pools[MEMP_MAX]

Definition at line 81 of file memp.c.