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/**
* @file
* lwIP internal memory implementations (do not use in application code)
*/
/*
* Copyright (c) 2018 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: Simon Goldschmidt <goldsimon@gmx.de>
*
*/
#ifndef LWIP_HDR_MEM_PRIV_H
#define LWIP_HDR_MEM_PRIV_H
#include "lwip/opt.h"
#ifdef __cplusplus
extern "C" {
#endif
#include "lwip/mem.h"
#if MEM_OVERFLOW_CHECK || MEMP_OVERFLOW_CHECK
/* if MEM_OVERFLOW_CHECK or MEMP_OVERFLOW_CHECK is turned on, we reserve some
* bytes at the beginning and at the end of each element, initialize them as
* 0xcd and check them later.
* If MEM(P)_OVERFLOW_CHECK is >= 2, on every call to mem(p)_malloc or mem(p)_free,
* every single element in each pool/heap is checked!
* This is VERY SLOW but also very helpful.
* MEM_SANITY_REGION_BEFORE and MEM_SANITY_REGION_AFTER can be overridden in
* lwipopts.h to change the amount reserved for checking. */
#ifndef MEM_SANITY_REGION_BEFORE
#define MEM_SANITY_REGION_BEFORE 16
#endif /* MEM_SANITY_REGION_BEFORE*/
#if MEM_SANITY_REGION_BEFORE > 0
#define MEM_SANITY_REGION_BEFORE_ALIGNED LWIP_MEM_ALIGN_SIZE(MEM_SANITY_REGION_BEFORE)
#else
#define MEM_SANITY_REGION_BEFORE_ALIGNED 0
#endif /* MEM_SANITY_REGION_BEFORE*/
#ifndef MEM_SANITY_REGION_AFTER
#define MEM_SANITY_REGION_AFTER 16
#endif /* MEM_SANITY_REGION_AFTER*/
#if MEM_SANITY_REGION_AFTER > 0
#define MEM_SANITY_REGION_AFTER_ALIGNED LWIP_MEM_ALIGN_SIZE(MEM_SANITY_REGION_AFTER)
#else
#define MEM_SANITY_REGION_AFTER_ALIGNED 0
#endif /* MEM_SANITY_REGION_AFTER*/
void mem_overflow_init_raw(void *p, size_t size);
void mem_overflow_check_raw(void *p, size_t size, const char *descr1, const char *descr2);
#endif /* MEM_OVERFLOW_CHECK || MEMP_OVERFLOW_CHECK */
#ifdef __cplusplus
}
#endif
#endif /* LWIP_HDR_MEMP_PRIV_H */
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