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/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/sockets.h"
#include "lwip/netifapi.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"
#include "path/to/my/lwip_hooks.h"

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)

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

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

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

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.

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

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

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