alexb/lib/lwip/contrib/src/core/memp.c File Reference

Dynamic pool memory manager. More...

#include "lwip/opt.h"
#include "lwip/memp.h"
#include "lwip/pbuf.h"
#include "lwip/udp.h"
#include "lwip/raw.h"
#include "lwip/tcp_impl.h"
#include "lwip/igmp.h"
#include "lwip/api.h"
#include "lwip/api_msg.h"
#include "lwip/tcpip.h"
#include "lwip/sys.h"
#include "lwip/timers.h"
#include "lwip/stats.h"
#include "netif/etharp.h"
#include "lwip/ip_frag.h"
#include "lwip/snmp_structs.h"
#include "lwip/snmp_msg.h"
#include "lwip/dns.h"
#include "netif/ppp_oe.h"
#include <string.h>
#include "lwip/memp_std.h"

Classes
struct	memp
Defines
#define	MEMP_SIZE   0
#define	MEMP_ALIGN_SIZE(x)   (LWIP_MEM_ALIGN_SIZE(x))
#define	LWIP_MEMPOOL(name, num, size, desc)   LWIP_MEM_ALIGN_SIZE(size),
#define	LWIP_MEMPOOL(name, num, size, desc)   (num),
#define	LWIP_MEMPOOL(name, num, size, desc)   + ( (num) * (MEMP_SIZE + MEMP_ALIGN_SIZE(size) ) )
Functions
void	memp_init (void)
	Initialize this module.
void *	memp_malloc (memp_t type)
	Get an element from a specific pool.
void	memp_free (memp_t type, void *mem)
	Put an element back into its pool.

---

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.

---

Define Documentation

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

#define LWIP_MEMPOOL	(		name,
			num,
			size,
			desc
	)			+ ( (num) * (MEMP_SIZE + MEMP_ALIGN_SIZE(size) ) )

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

#define MEMP_ALIGN_SIZE

(

x

)

(LWIP_MEM_ALIGN_SIZE(x))

#define MEMP_SIZE   0

---

Function Documentation

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