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/* |
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* Copyright (c) 2001-2004 Swedish Institute of Computer Science. |
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* All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without modification, |
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* are permitted provided that the following conditions are met: |
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* |
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* 1. Redistributions of source code must retain the above copyright notice, |
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* this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright notice, |
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* this list of conditions and the following disclaimer in the documentation |
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* and/or other materials provided with the distribution. |
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* 3. The name of the author may not be used to endorse or promote products |
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* derived from this software without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT |
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* SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT |
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* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING |
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY |
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* OF SUCH DAMAGE. |
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* |
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* This file is part of the lwIP TCP/IP stack. |
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* |
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* Author: Adam Dunkels <adam@sics.se> |
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* |
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*/ |
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#ifndef __LWIP_MEM_H__ |
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#define __LWIP_MEM_H__ |
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|
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#include "lwip/opt.h" |
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|
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#ifdef __cplusplus |
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extern "C" { |
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#endif |
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|
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#if MEM_LIBC_MALLOC |
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|
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#include <stddef.h> /* for size_t */ |
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|
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typedef size_t mem_size_t; |
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|
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/* aliases for C library malloc() */ |
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#define mem_init() |
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/* in case C library malloc() needs extra protection, |
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* allow these defines to be overridden. |
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*/ |
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#ifndef mem_free |
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#define mem_free free |
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#endif |
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#ifndef mem_malloc |
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#define mem_malloc malloc |
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#endif |
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#ifndef mem_calloc |
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#define mem_calloc calloc |
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#endif |
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#ifndef mem_realloc |
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static void *mem_realloc(void *mem, mem_size_t size) |
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{ |
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LWIP_UNUSED_ARG(size); |
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return mem; |
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} |
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#endif |
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#else /* MEM_LIBC_MALLOC */ |
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|
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/* MEM_SIZE would have to be aligned, but using 64000 here instead of |
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* 65535 leaves some room for alignment... |
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*/ |
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#if MEM_SIZE > 64000l |
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typedef u32_t mem_size_t; |
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#else |
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typedef u16_t mem_size_t; |
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#endif /* MEM_SIZE > 64000 */ |
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|
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#if MEM_USE_POOLS |
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/** mem_init is not used when using pools instead of a heap */ |
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#define mem_init() |
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/** mem_realloc is not used when using pools instead of a heap: |
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we can't free part of a pool element and don't want to copy the rest */ |
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#define mem_realloc(mem, size) (mem) |
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#else /* MEM_USE_POOLS */ |
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/* lwIP alternative malloc */ |
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void mem_init(void); |
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void *mem_realloc(void *mem, mem_size_t size); |
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#endif /* MEM_USE_POOLS */ |
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void *mem_malloc(mem_size_t size); |
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void *mem_calloc(mem_size_t count, mem_size_t size); |
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void mem_free(void *mem); |
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#endif /* MEM_LIBC_MALLOC */ |
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|
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#ifndef LWIP_MEM_ALIGN_SIZE |
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#define LWIP_MEM_ALIGN_SIZE(size) (((size) + MEM_ALIGNMENT - 1) & ~(MEM_ALIGNMENT-1)) |
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#endif |
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|
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#ifndef LWIP_MEM_ALIGN |
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#define LWIP_MEM_ALIGN(addr) ((void *)(((mem_ptr_t)(addr) + MEM_ALIGNMENT - 1) & ~(mem_ptr_t)(MEM_ALIGNMENT-1))) |
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#endif |
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|
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#ifdef __cplusplus |
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} |
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#endif |
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|
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#endif /* __LWIP_MEM_H__ */ |