source: azure_iot_hub_f767zi/trunk/asp_baseplatform/lwip/lwip-2.1.2/src/include/lwip/priv/mem_priv.h@ 457

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[457]1/**
2 * @file
3 * lwIP internal memory implementations (do not use in application code)
4 */
5
6/*
7 * Copyright (c) 2018 Swedish Institute of Computer Science.
8 * All rights reserved.
9 *
10 * Redistribution and use in source and binary forms, with or without modification,
11 * are permitted provided that the following conditions are met:
12 *
13 * 1. Redistributions of source code must retain the above copyright notice,
14 * this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright notice,
16 * this list of conditions and the following disclaimer in the documentation
17 * and/or other materials provided with the distribution.
18 * 3. The name of the author may not be used to endorse or promote products
19 * derived from this software without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
22 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
23 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
24 * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
25 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
26 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
29 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
30 * OF SUCH DAMAGE.
31 *
32 * This file is part of the lwIP TCP/IP stack.
33 *
34 * Author: Simon Goldschmidt <goldsimon@gmx.de>
35 *
36 */
37
38#ifndef LWIP_HDR_MEM_PRIV_H
39#define LWIP_HDR_MEM_PRIV_H
40
41#include "lwip/opt.h"
42
43#ifdef __cplusplus
44extern "C" {
45#endif
46
47#include "lwip/mem.h"
48
49#if MEM_OVERFLOW_CHECK || MEMP_OVERFLOW_CHECK
50/* if MEM_OVERFLOW_CHECK or MEMP_OVERFLOW_CHECK is turned on, we reserve some
51 * bytes at the beginning and at the end of each element, initialize them as
52 * 0xcd and check them later.
53 * If MEM(P)_OVERFLOW_CHECK is >= 2, on every call to mem(p)_malloc or mem(p)_free,
54 * every single element in each pool/heap is checked!
55 * This is VERY SLOW but also very helpful.
56 * MEM_SANITY_REGION_BEFORE and MEM_SANITY_REGION_AFTER can be overridden in
57 * lwipopts.h to change the amount reserved for checking. */
58#ifndef MEM_SANITY_REGION_BEFORE
59#define MEM_SANITY_REGION_BEFORE 16
60#endif /* MEM_SANITY_REGION_BEFORE*/
61#if MEM_SANITY_REGION_BEFORE > 0
62#define MEM_SANITY_REGION_BEFORE_ALIGNED LWIP_MEM_ALIGN_SIZE(MEM_SANITY_REGION_BEFORE)
63#else
64#define MEM_SANITY_REGION_BEFORE_ALIGNED 0
65#endif /* MEM_SANITY_REGION_BEFORE*/
66#ifndef MEM_SANITY_REGION_AFTER
67#define MEM_SANITY_REGION_AFTER 16
68#endif /* MEM_SANITY_REGION_AFTER*/
69#if MEM_SANITY_REGION_AFTER > 0
70#define MEM_SANITY_REGION_AFTER_ALIGNED LWIP_MEM_ALIGN_SIZE(MEM_SANITY_REGION_AFTER)
71#else
72#define MEM_SANITY_REGION_AFTER_ALIGNED 0
73#endif /* MEM_SANITY_REGION_AFTER*/
74
75void mem_overflow_init_raw(void *p, size_t size);
76void mem_overflow_check_raw(void *p, size_t size, const char *descr1, const char *descr2);
77
78#endif /* MEM_OVERFLOW_CHECK || MEMP_OVERFLOW_CHECK */
79
80#ifdef __cplusplus
81}
82#endif
83
84#endif /* LWIP_HDR_MEMP_PRIV_H */
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