mbed unsupported / lwip

A version of LWIP, provided for backwards compatibility.

Dependents:   AA_DemoBoard DemoBoard HelloServerDemo DemoBoard_RangeIndicator ... more

trunk/Core/lwIP/include/lwip/mem.h@0:5e1631496985, 2012-05-08 (annotated)

Committer:
root@mbed.org
Date:
Tue May 08 15:32:10 2012 +0100
Revision:
0:5e1631496985
initial commit

Who changed what in which revision?

UserRevisionLine numberNew contents of line
root@mbed.org 0:5e1631496985 1 /*
root@mbed.org 0:5e1631496985 2 * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
root@mbed.org 0:5e1631496985 3 * All rights reserved.
root@mbed.org 0:5e1631496985 4 *
root@mbed.org 0:5e1631496985 5 * Redistribution and use in source and binary forms, with or without modification,
root@mbed.org 0:5e1631496985 6 * are permitted provided that the following conditions are met:
root@mbed.org 0:5e1631496985 7 *
root@mbed.org 0:5e1631496985 8 * 1. Redistributions of source code must retain the above copyright notice,
root@mbed.org 0:5e1631496985 9 * this list of conditions and the following disclaimer.
root@mbed.org 0:5e1631496985 10 * 2. Redistributions in binary form must reproduce the above copyright notice,
root@mbed.org 0:5e1631496985 11 * this list of conditions and the following disclaimer in the documentation
root@mbed.org 0:5e1631496985 12 * and/or other materials provided with the distribution.
root@mbed.org 0:5e1631496985 13 * 3. The name of the author may not be used to endorse or promote products
root@mbed.org 0:5e1631496985 14 * derived from this software without specific prior written permission.
root@mbed.org 0:5e1631496985 15 *
root@mbed.org 0:5e1631496985 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
root@mbed.org 0:5e1631496985 17 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
root@mbed.org 0:5e1631496985 18 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
root@mbed.org 0:5e1631496985 19 * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
root@mbed.org 0:5e1631496985 20 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
root@mbed.org 0:5e1631496985 21 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
root@mbed.org 0:5e1631496985 22 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
root@mbed.org 0:5e1631496985 23 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
root@mbed.org 0:5e1631496985 24 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
root@mbed.org 0:5e1631496985 25 * OF SUCH DAMAGE.
root@mbed.org 0:5e1631496985 26 *
root@mbed.org 0:5e1631496985 27 * This file is part of the lwIP TCP/IP stack.
root@mbed.org 0:5e1631496985 28 *
root@mbed.org 0:5e1631496985 29 * Author: Adam Dunkels <adam@sics.se>
root@mbed.org 0:5e1631496985 30 *
root@mbed.org 0:5e1631496985 31 */
root@mbed.org 0:5e1631496985 32 #ifndef __LWIP_MEM_H__
root@mbed.org 0:5e1631496985 33 #define __LWIP_MEM_H__
root@mbed.org 0:5e1631496985 34
root@mbed.org 0:5e1631496985 35 #include "lwip/opt.h"
root@mbed.org 0:5e1631496985 36
root@mbed.org 0:5e1631496985 37 #ifdef __cplusplus
root@mbed.org 0:5e1631496985 38 extern "C" {
root@mbed.org 0:5e1631496985 39 #endif
root@mbed.org 0:5e1631496985 40
root@mbed.org 0:5e1631496985 41 #if MEM_LIBC_MALLOC
root@mbed.org 0:5e1631496985 42
root@mbed.org 0:5e1631496985 43 #include <stddef.h> /* for size_t */
root@mbed.org 0:5e1631496985 44
root@mbed.org 0:5e1631496985 45 typedef size_t mem_size_t;
root@mbed.org 0:5e1631496985 46
root@mbed.org 0:5e1631496985 47 /* aliases for C library malloc() */
root@mbed.org 0:5e1631496985 48 #define mem_init()
root@mbed.org 0:5e1631496985 49 /* in case C library malloc() needs extra protection,
root@mbed.org 0:5e1631496985 50 * allow these defines to be overridden.
root@mbed.org 0:5e1631496985 51 */
root@mbed.org 0:5e1631496985 52 #ifndef mem_free
root@mbed.org 0:5e1631496985 53 #define mem_free free
root@mbed.org 0:5e1631496985 54 #endif
root@mbed.org 0:5e1631496985 55 #ifndef mem_malloc
root@mbed.org 0:5e1631496985 56 #define mem_malloc malloc
root@mbed.org 0:5e1631496985 57 #endif
root@mbed.org 0:5e1631496985 58 #ifndef mem_calloc
root@mbed.org 0:5e1631496985 59 #define mem_calloc calloc
root@mbed.org 0:5e1631496985 60 #endif
root@mbed.org 0:5e1631496985 61 #ifndef mem_realloc
root@mbed.org 0:5e1631496985 62 static void *mem_realloc(void *mem, mem_size_t size)
root@mbed.org 0:5e1631496985 63 {
root@mbed.org 0:5e1631496985 64 LWIP_UNUSED_ARG(size);
root@mbed.org 0:5e1631496985 65 return mem;
root@mbed.org 0:5e1631496985 66 }
root@mbed.org 0:5e1631496985 67 #endif
root@mbed.org 0:5e1631496985 68 #else /* MEM_LIBC_MALLOC */
root@mbed.org 0:5e1631496985 69
root@mbed.org 0:5e1631496985 70 /* MEM_SIZE would have to be aligned, but using 64000 here instead of
root@mbed.org 0:5e1631496985 71 * 65535 leaves some room for alignment...
root@mbed.org 0:5e1631496985 72 */
root@mbed.org 0:5e1631496985 73 #if MEM_SIZE > 64000l
root@mbed.org 0:5e1631496985 74 typedef u32_t mem_size_t;
root@mbed.org 0:5e1631496985 75 #else
root@mbed.org 0:5e1631496985 76 typedef u16_t mem_size_t;
root@mbed.org 0:5e1631496985 77 #endif /* MEM_SIZE > 64000 */
root@mbed.org 0:5e1631496985 78
root@mbed.org 0:5e1631496985 79 #if MEM_USE_POOLS
root@mbed.org 0:5e1631496985 80 /** mem_init is not used when using pools instead of a heap */
root@mbed.org 0:5e1631496985 81 #define mem_init()
root@mbed.org 0:5e1631496985 82 /** mem_realloc is not used when using pools instead of a heap:
root@mbed.org 0:5e1631496985 83 we can't free part of a pool element and don't want to copy the rest */
root@mbed.org 0:5e1631496985 84 #define mem_realloc(mem, size) (mem)
root@mbed.org 0:5e1631496985 85 #else /* MEM_USE_POOLS */
root@mbed.org 0:5e1631496985 86 /* lwIP alternative malloc */
root@mbed.org 0:5e1631496985 87 void mem_init(void);
root@mbed.org 0:5e1631496985 88 void *mem_realloc(void *mem, mem_size_t size);
root@mbed.org 0:5e1631496985 89 #endif /* MEM_USE_POOLS */
root@mbed.org 0:5e1631496985 90 void *mem_malloc(mem_size_t size);
root@mbed.org 0:5e1631496985 91 void *mem_calloc(mem_size_t count, mem_size_t size);
root@mbed.org 0:5e1631496985 92 void mem_free(void *mem);
root@mbed.org 0:5e1631496985 93 #endif /* MEM_LIBC_MALLOC */
root@mbed.org 0:5e1631496985 94
root@mbed.org 0:5e1631496985 95 #ifndef LWIP_MEM_ALIGN_SIZE
root@mbed.org 0:5e1631496985 96 #define LWIP_MEM_ALIGN_SIZE(size) (((size) + MEM_ALIGNMENT - 1) & ~(MEM_ALIGNMENT-1))
root@mbed.org 0:5e1631496985 97 #endif
root@mbed.org 0:5e1631496985 98
root@mbed.org 0:5e1631496985 99 #ifndef LWIP_MEM_ALIGN
root@mbed.org 0:5e1631496985 100 #define LWIP_MEM_ALIGN(addr) ((void *)(((mem_ptr_t)(addr) + MEM_ALIGNMENT - 1) & ~(mem_ptr_t)(MEM_ALIGNMENT-1)))
root@mbed.org 0:5e1631496985 101 #endif
root@mbed.org 0:5e1631496985 102
root@mbed.org 0:5e1631496985 103 #ifdef __cplusplus
root@mbed.org 0:5e1631496985 104 }
root@mbed.org 0:5e1631496985 105 #endif
root@mbed.org 0:5e1631496985 106
root@mbed.org 0:5e1631496985 107 #endif /* __LWIP_MEM_H__ */