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1 office 1 /**
2 * @file
3 * Heap API
4 */
5  
6 /*
7 * Copyright (c) 2001-2004 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: Adam Dunkels <adam@sics.se>
35 *
36 */
37 #ifndef LWIP_HDR_MEM_H
38 #define LWIP_HDR_MEM_H
39  
40 #include "lwip/opt.h"
41  
42 #ifdef __cplusplus
43 extern "C" {
44 #endif
45  
46 #if MEM_LIBC_MALLOC
47  
48 #include "lwip/arch.h"
49  
50 typedef size_t mem_size_t;
51 #define MEM_SIZE_F SZT_F
52  
53 #elif MEM_USE_POOLS
54  
55 typedef u16_t mem_size_t;
56 #define MEM_SIZE_F U16_F
57  
58 #else
59  
60 /* MEM_SIZE would have to be aligned, but using 64000 here instead of
61 * 65535 leaves some room for alignment...
62 */
63 #if MEM_SIZE > 64000L
64 typedef u32_t mem_size_t;
65 #define MEM_SIZE_F U32_F
66 #else
67 typedef u16_t mem_size_t;
68 #define MEM_SIZE_F U16_F
69 #endif /* MEM_SIZE > 64000 */
70 #endif
71  
72 void mem_init(void);
73 void *mem_trim(void *mem, mem_size_t size);
74 void *mem_malloc(mem_size_t size);
75 void *mem_calloc(mem_size_t count, mem_size_t size);
76 void mem_free(void *mem);
77  
78 #ifdef __cplusplus
79 }
80 #endif
81  
82 #endif /* LWIP_HDR_MEM_H */