7e55dbac33
commit a4a41b9023ef5b3a7c4a1cd82fb167fc63e706df Author: goldsimon <goldsimon@gmx.de> Date: Wed Sep 26 21:50:42 2012 +0200 - This also brings in LwIP's IPv6 codebase Signed-off-by: Tomas Hruby <tom@minix3.org>
125 lines
4.1 KiB
C
125 lines
4.1 KiB
C
/*
|
|
* Copyright (c) 2001-2004 Swedish Institute of Computer Science.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without modification,
|
|
* are permitted provided that the following conditions are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright notice,
|
|
* this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright notice,
|
|
* this list of conditions and the following disclaimer in the documentation
|
|
* and/or other materials provided with the distribution.
|
|
* 3. The name of the author may not be used to endorse or promote products
|
|
* derived from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
|
|
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
|
|
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
|
|
* SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
|
|
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
|
|
* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
|
|
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
|
|
* OF SUCH DAMAGE.
|
|
*
|
|
* This file is part of the lwIP TCP/IP stack.
|
|
*
|
|
* Author: Adam Dunkels <adam@sics.se>
|
|
*
|
|
*/
|
|
#ifndef __LWIP_MEM_H__
|
|
#define __LWIP_MEM_H__
|
|
|
|
#include "lwip/opt.h"
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
#if MEM_LIBC_MALLOC
|
|
|
|
#include <stddef.h> /* for size_t */
|
|
#include <stdlib.h>
|
|
|
|
typedef size_t mem_size_t;
|
|
#define MEM_SIZE_F SZT_F
|
|
|
|
/* aliases for C library malloc() */
|
|
#define mem_init()
|
|
/* in case C library malloc() needs extra protection,
|
|
* allow these defines to be overridden.
|
|
*/
|
|
#ifndef mem_free
|
|
#define mem_free free
|
|
#endif
|
|
#ifndef mem_malloc
|
|
#define mem_malloc malloc
|
|
#endif
|
|
#ifndef mem_calloc
|
|
#define mem_calloc calloc
|
|
#endif
|
|
/* Since there is no C library allocation function to shrink memory without
|
|
moving it, define this to nothing. */
|
|
#ifndef mem_trim
|
|
#define mem_trim(mem, size) (mem)
|
|
#endif
|
|
#else /* MEM_LIBC_MALLOC */
|
|
|
|
/* MEM_SIZE would have to be aligned, but using 64000 here instead of
|
|
* 65535 leaves some room for alignment...
|
|
*/
|
|
#if MEM_SIZE > 64000L
|
|
typedef u32_t mem_size_t;
|
|
#define MEM_SIZE_F U32_F
|
|
#else
|
|
typedef u16_t mem_size_t;
|
|
#define MEM_SIZE_F U16_F
|
|
#endif /* MEM_SIZE > 64000 */
|
|
|
|
#if MEM_USE_POOLS
|
|
/** mem_init is not used when using pools instead of a heap */
|
|
#define mem_init()
|
|
/** mem_trim is not used when using pools instead of a heap:
|
|
we can't free part of a pool element and don't want to copy the rest */
|
|
#define mem_trim(mem, size) (mem)
|
|
#else /* MEM_USE_POOLS */
|
|
/* lwIP alternative malloc */
|
|
void mem_init(void);
|
|
void *mem_trim(void *mem, mem_size_t size);
|
|
#endif /* MEM_USE_POOLS */
|
|
void *mem_malloc(mem_size_t size);
|
|
void *mem_calloc(mem_size_t count, mem_size_t size);
|
|
void mem_free(void *mem);
|
|
#endif /* MEM_LIBC_MALLOC */
|
|
|
|
/** Calculate memory size for an aligned buffer - returns the next highest
|
|
* multiple of MEM_ALIGNMENT (e.g. LWIP_MEM_ALIGN_SIZE(3) and
|
|
* LWIP_MEM_ALIGN_SIZE(4) will both yield 4 for MEM_ALIGNMENT == 4).
|
|
*/
|
|
#ifndef LWIP_MEM_ALIGN_SIZE
|
|
#define LWIP_MEM_ALIGN_SIZE(size) (((size) + MEM_ALIGNMENT - 1) & ~(MEM_ALIGNMENT-1))
|
|
#endif
|
|
|
|
/** Calculate safe memory size for an aligned buffer when using an unaligned
|
|
* type as storage. This includes a safety-margin on (MEM_ALIGNMENT - 1) at the
|
|
* start (e.g. if buffer is u8_t[] and actual data will be u32_t*)
|
|
*/
|
|
#ifndef LWIP_MEM_ALIGN_BUFFER
|
|
#define LWIP_MEM_ALIGN_BUFFER(size) (((size) + MEM_ALIGNMENT - 1))
|
|
#endif
|
|
|
|
/** Align a memory pointer to the alignment defined by MEM_ALIGNMENT
|
|
* so that ADDR % MEM_ALIGNMENT == 0
|
|
*/
|
|
#ifndef LWIP_MEM_ALIGN
|
|
#define LWIP_MEM_ALIGN(addr) ((void *)(((mem_ptr_t)(addr) + MEM_ALIGNMENT - 1) & ~(mem_ptr_t)(MEM_ALIGNMENT-1)))
|
|
#endif
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* __LWIP_MEM_H__ */
|