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Dependencies:   F7_Ethernet WebSocketClient mbed mcp3008

Fork of Nucleo_F746ZG_Ethernet by Dieter Graef

F7_Ethernet/lwip/include/lwip/mem.h@0:f9b6112278fe, 2016-06-18 (annotated)

Committer:
DieterGraef
Date:
Sat Jun 18 10:49:12 2016 +0000
Revision:
0:f9b6112278fe
Ethernet for the NUCLEO STM32F746 Board Testprogram uses DHCP and NTP to set the clock

Who changed what in which revision?

UserRevisionLine numberNew contents of line
DieterGraef 0:f9b6112278fe 1 /*
DieterGraef 0:f9b6112278fe 2 * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
DieterGraef 0:f9b6112278fe 3 * All rights reserved.
DieterGraef 0:f9b6112278fe 4 *
DieterGraef 0:f9b6112278fe 5 * Redistribution and use in source and binary forms, with or without modification,
DieterGraef 0:f9b6112278fe 6 * are permitted provided that the following conditions are met:
DieterGraef 0:f9b6112278fe 7 *
DieterGraef 0:f9b6112278fe 8 * 1. Redistributions of source code must retain the above copyright notice,
DieterGraef 0:f9b6112278fe 9 * this list of conditions and the following disclaimer.
DieterGraef 0:f9b6112278fe 10 * 2. Redistributions in binary form must reproduce the above copyright notice,
DieterGraef 0:f9b6112278fe 11 * this list of conditions and the following disclaimer in the documentation
DieterGraef 0:f9b6112278fe 12 * and/or other materials provided with the distribution.
DieterGraef 0:f9b6112278fe 13 * 3. The name of the author may not be used to endorse or promote products
DieterGraef 0:f9b6112278fe 14 * derived from this software without specific prior written permission.
DieterGraef 0:f9b6112278fe 15 *
DieterGraef 0:f9b6112278fe 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
DieterGraef 0:f9b6112278fe 17 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
DieterGraef 0:f9b6112278fe 18 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
DieterGraef 0:f9b6112278fe 19 * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
DieterGraef 0:f9b6112278fe 20 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
DieterGraef 0:f9b6112278fe 21 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
DieterGraef 0:f9b6112278fe 22 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
DieterGraef 0:f9b6112278fe 23 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
DieterGraef 0:f9b6112278fe 24 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
DieterGraef 0:f9b6112278fe 25 * OF SUCH DAMAGE.
DieterGraef 0:f9b6112278fe 26 *
DieterGraef 0:f9b6112278fe 27 * This file is part of the lwIP TCP/IP stack.
DieterGraef 0:f9b6112278fe 28 *
DieterGraef 0:f9b6112278fe 29 * Author: Adam Dunkels <adam@sics.se>
DieterGraef 0:f9b6112278fe 30 *
DieterGraef 0:f9b6112278fe 31 */
DieterGraef 0:f9b6112278fe 32 #ifndef __LWIP_MEM_H__
DieterGraef 0:f9b6112278fe 33 #define __LWIP_MEM_H__
DieterGraef 0:f9b6112278fe 34
DieterGraef 0:f9b6112278fe 35 #include "lwip/opt.h"
DieterGraef 0:f9b6112278fe 36
DieterGraef 0:f9b6112278fe 37 #ifdef __cplusplus
DieterGraef 0:f9b6112278fe 38 extern "C" {
DieterGraef 0:f9b6112278fe 39 #endif
DieterGraef 0:f9b6112278fe 40
DieterGraef 0:f9b6112278fe 41 #if MEM_LIBC_MALLOC
DieterGraef 0:f9b6112278fe 42
DieterGraef 0:f9b6112278fe 43 #include <stddef.h> /* for size_t */
DieterGraef 0:f9b6112278fe 44
DieterGraef 0:f9b6112278fe 45 typedef size_t mem_size_t;
DieterGraef 0:f9b6112278fe 46 #define MEM_SIZE_F SZT_F
DieterGraef 0:f9b6112278fe 47
DieterGraef 0:f9b6112278fe 48 /* aliases for C library malloc() */
DieterGraef 0:f9b6112278fe 49 #define mem_init()
DieterGraef 0:f9b6112278fe 50 /* in case C library malloc() needs extra protection,
DieterGraef 0:f9b6112278fe 51 * allow these defines to be overridden.
DieterGraef 0:f9b6112278fe 52 */
DieterGraef 0:f9b6112278fe 53 #ifndef mem_free
DieterGraef 0:f9b6112278fe 54 #define mem_free free
DieterGraef 0:f9b6112278fe 55 #endif
DieterGraef 0:f9b6112278fe 56 #ifndef mem_malloc
DieterGraef 0:f9b6112278fe 57 #define mem_malloc malloc
DieterGraef 0:f9b6112278fe 58 #endif
DieterGraef 0:f9b6112278fe 59 #ifndef mem_calloc
DieterGraef 0:f9b6112278fe 60 #define mem_calloc calloc
DieterGraef 0:f9b6112278fe 61 #endif
DieterGraef 0:f9b6112278fe 62 /* Since there is no C library allocation function to shrink memory without
DieterGraef 0:f9b6112278fe 63 moving it, define this to nothing. */
DieterGraef 0:f9b6112278fe 64 #ifndef mem_trim
DieterGraef 0:f9b6112278fe 65 #define mem_trim(mem, size) (mem)
DieterGraef 0:f9b6112278fe 66 #endif
DieterGraef 0:f9b6112278fe 67 #else /* MEM_LIBC_MALLOC */
DieterGraef 0:f9b6112278fe 68
DieterGraef 0:f9b6112278fe 69 /* MEM_SIZE would have to be aligned, but using 64000 here instead of
DieterGraef 0:f9b6112278fe 70 * 65535 leaves some room for alignment...
DieterGraef 0:f9b6112278fe 71 */
DieterGraef 0:f9b6112278fe 72 #if MEM_SIZE > 64000L
DieterGraef 0:f9b6112278fe 73 typedef u32_t mem_size_t;
DieterGraef 0:f9b6112278fe 74 #define MEM_SIZE_F U32_F
DieterGraef 0:f9b6112278fe 75 #else
DieterGraef 0:f9b6112278fe 76 typedef u16_t mem_size_t;
DieterGraef 0:f9b6112278fe 77 #define MEM_SIZE_F U16_F
DieterGraef 0:f9b6112278fe 78 #endif /* MEM_SIZE > 64000 */
DieterGraef 0:f9b6112278fe 79
DieterGraef 0:f9b6112278fe 80 #if MEM_USE_POOLS
DieterGraef 0:f9b6112278fe 81 /** mem_init is not used when using pools instead of a heap */
DieterGraef 0:f9b6112278fe 82 #define mem_init()
DieterGraef 0:f9b6112278fe 83 /** mem_trim is not used when using pools instead of a heap:
DieterGraef 0:f9b6112278fe 84 we can't free part of a pool element and don't want to copy the rest */
DieterGraef 0:f9b6112278fe 85 #define mem_trim(mem, size) (mem)
DieterGraef 0:f9b6112278fe 86 #else /* MEM_USE_POOLS */
DieterGraef 0:f9b6112278fe 87 /* lwIP alternative malloc */
DieterGraef 0:f9b6112278fe 88 void mem_init(void);
DieterGraef 0:f9b6112278fe 89 void *mem_trim(void *mem, mem_size_t size);
DieterGraef 0:f9b6112278fe 90 #endif /* MEM_USE_POOLS */
DieterGraef 0:f9b6112278fe 91 void *mem_malloc(mem_size_t size);
DieterGraef 0:f9b6112278fe 92 void *mem_calloc(mem_size_t count, mem_size_t size);
DieterGraef 0:f9b6112278fe 93 void mem_free(void *mem);
DieterGraef 0:f9b6112278fe 94 #endif /* MEM_LIBC_MALLOC */
DieterGraef 0:f9b6112278fe 95
DieterGraef 0:f9b6112278fe 96 /** Calculate memory size for an aligned buffer - returns the next highest
DieterGraef 0:f9b6112278fe 97 * multiple of MEM_ALIGNMENT (e.g. LWIP_MEM_ALIGN_SIZE(3) and
DieterGraef 0:f9b6112278fe 98 * LWIP_MEM_ALIGN_SIZE(4) will both yield 4 for MEM_ALIGNMENT == 4).
DieterGraef 0:f9b6112278fe 99 */
DieterGraef 0:f9b6112278fe 100 #ifndef LWIP_MEM_ALIGN_SIZE
DieterGraef 0:f9b6112278fe 101 #define LWIP_MEM_ALIGN_SIZE(size) (((size) + MEM_ALIGNMENT - 1) & ~(MEM_ALIGNMENT-1))
DieterGraef 0:f9b6112278fe 102 #endif
DieterGraef 0:f9b6112278fe 103
DieterGraef 0:f9b6112278fe 104 /** Calculate safe memory size for an aligned buffer when using an unaligned
DieterGraef 0:f9b6112278fe 105 * type as storage. This includes a safety-margin on (MEM_ALIGNMENT - 1) at the
DieterGraef 0:f9b6112278fe 106 * start (e.g. if buffer is u8_t[] and actual data will be u32_t*)
DieterGraef 0:f9b6112278fe 107 */
DieterGraef 0:f9b6112278fe 108 #ifndef LWIP_MEM_ALIGN_BUFFER
DieterGraef 0:f9b6112278fe 109 #define LWIP_MEM_ALIGN_BUFFER(size) (((size) + MEM_ALIGNMENT - 1))
DieterGraef 0:f9b6112278fe 110 #endif
DieterGraef 0:f9b6112278fe 111
DieterGraef 0:f9b6112278fe 112 /** Align a memory pointer to the alignment defined by MEM_ALIGNMENT
DieterGraef 0:f9b6112278fe 113 * so that ADDR % MEM_ALIGNMENT == 0
DieterGraef 0:f9b6112278fe 114 */
DieterGraef 0:f9b6112278fe 115 #ifndef LWIP_MEM_ALIGN
DieterGraef 0:f9b6112278fe 116 #define LWIP_MEM_ALIGN(addr) ((void *)(((mem_ptr_t)(addr) + MEM_ALIGNMENT - 1) & ~(mem_ptr_t)(MEM_ALIGNMENT-1)))
DieterGraef 0:f9b6112278fe 117 #endif
DieterGraef 0:f9b6112278fe 118
DieterGraef 0:f9b6112278fe 119 #ifdef __cplusplus
DieterGraef 0:f9b6112278fe 120 }
DieterGraef 0:f9b6112278fe 121 #endif
DieterGraef 0:f9b6112278fe 122
DieterGraef 0:f9b6112278fe 123 #endif /* __LWIP_MEM_H__ */