2 * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
5 * Redistribution and use in source and binary forms, with or without modification,
6 * are permitted provided that the following conditions are met:
8 * 1. Redistributions of source code must retain the above copyright notice,
9 * this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright notice,
11 * this list of conditions and the following disclaimer in the documentation
12 * and/or other materials provided with the distribution.
13 * 3. The name of the author may not be used to endorse or promote products
14 * derived from this software without specific prior written permission.
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
17 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
18 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
19 * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
20 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
21 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
22 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
23 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
24 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
27 * This file is part of the lwIP TCP/IP stack.
29 * Author: Adam Dunkels <adam@sics.se>
32 #ifndef __LWIP_MEM_H__
33 #define __LWIP_MEM_H__
43 #include <stddef.h> /* for size_t */
45 typedef size_t mem_size_t;
47 /* aliases for C library malloc() */
49 /* in case C library malloc() needs extra protection,
50 * allow these defines to be overridden.
53 #define mem_free(x) free(x)
56 #define mem_malloc(x) malloc(x)
59 #define mem_calloc(x, y) calloc(x, y)
62 #define mem_realloc(x, size) (x)
64 #else /* MEM_LIBC_MALLOC */
66 /* MEM_SIZE would have to be aligned, but using 64000 here instead of
67 * 65535 leaves some room for alignment...
70 typedef u32_t mem_size_t;
72 typedef u16_t mem_size_t;
73 #endif /* MEM_SIZE > 64000 */
76 /** mem_init is not used when using pools instead of a heap */
78 /** mem_realloc is not used when using pools instead of a heap:
79 we can't free part of a pool element and don't want to copy the rest */
80 #define mem_realloc(mem, size) (mem)
81 #else /* MEM_USE_POOLS */
82 /* lwIP alternative malloc */
84 void *mem_realloc(void *mem, mem_size_t size);
85 #endif /* MEM_USE_POOLS */
86 void *mem_malloc(mem_size_t size);
87 void *mem_calloc(mem_size_t count, mem_size_t size);
88 void mem_free(void *mem);
89 #endif /* MEM_LIBC_MALLOC */
91 #ifndef LWIP_MEM_ALIGN_SIZE
92 #define LWIP_MEM_ALIGN_SIZE(size) (((size) + MEM_ALIGNMENT - 1) & ~(MEM_ALIGNMENT-1))
95 #ifndef LWIP_MEM_ALIGN
96 #define LWIP_MEM_ALIGN(addr) ((void *)(((mem_ptr_t)(addr) + MEM_ALIGNMENT - 1) & ~(mem_ptr_t)(MEM_ALIGNMENT-1)))
103 #endif /* __LWIP_MEM_H__ */
git.joshuawise.com / netwatch.git / blob