1 | /*
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2 | * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
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3 | * All rights reserved.
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4 | *
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5 | * Redistribution and use in source and binary forms, with or without modification,
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6 | * are permitted provided that the following conditions are met:
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7 | *
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8 | * 1. Redistributions of source code must retain the above copyright notice,
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9 | * this list of conditions and the following disclaimer.
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10 | * 2. Redistributions in binary form must reproduce the above copyright notice,
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11 | * this list of conditions and the following disclaimer in the documentation
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12 | * and/or other materials provided with the distribution.
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13 | * 3. The name of the author may not be used to endorse or promote products
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14 | * derived from this software without specific prior written permission.
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15 | *
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16 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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17 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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18 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
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19 | * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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20 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
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21 | * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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22 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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23 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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24 | * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
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25 | * OF SUCH DAMAGE.
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26 | *
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27 | * This file is part of the lwIP TCP/IP stack.
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28 | *
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29 | * Author: Adam Dunkels <adam@sics.se>
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30 | *
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31 | */
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32 |
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33 | #ifndef __LWIP_MEMP_H__
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34 | #define __LWIP_MEMP_H__
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35 |
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36 | #include "lwip/opt.h"
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37 |
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38 | #ifdef __cplusplus
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39 | extern "C" {
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40 | #endif
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41 |
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42 | /* Create the list of all memory pools managed by memp. MEMP_MAX represents a NULL pool at the end */
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43 | typedef enum {
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44 | #define LWIP_MEMPOOL(name,num,size,desc) MEMP_##name,
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45 | #include "lwip/memp_std.h"
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46 | MEMP_MAX
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47 | } memp_t;
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48 |
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49 | #if MEM_USE_POOLS
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50 | /* Use a helper type to get the start and end of the user "memory pools" for mem_malloc */
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51 | typedef enum {
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52 | /* Get the first (via:
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53 | MEMP_POOL_HELPER_START = ((u8_t) 1*MEMP_POOL_A + 0*MEMP_POOL_B + 0*MEMP_POOL_C + 0)*/
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54 | MEMP_POOL_HELPER_FIRST = ((u8_t)
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55 | #define LWIP_MEMPOOL(name,num,size,desc)
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56 | #define LWIP_MALLOC_MEMPOOL_START 1
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57 | #define LWIP_MALLOC_MEMPOOL(num, size) * MEMP_POOL_##size + 0
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58 | #define LWIP_MALLOC_MEMPOOL_END
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59 | #include "lwip/memp_std.h"
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60 | ) ,
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61 | /* Get the last (via:
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62 | MEMP_POOL_HELPER_END = ((u8_t) 0 + MEMP_POOL_A*0 + MEMP_POOL_B*0 + MEMP_POOL_C*1) */
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63 | MEMP_POOL_HELPER_LAST = ((u8_t)
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64 | #define LWIP_MEMPOOL(name,num,size,desc)
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65 | #define LWIP_MALLOC_MEMPOOL_START
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66 | #define LWIP_MALLOC_MEMPOOL(num, size) 0 + MEMP_POOL_##size *
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67 | #define LWIP_MALLOC_MEMPOOL_END 1
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68 | #include "lwip/memp_std.h"
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69 | )
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70 | } memp_pool_helper_t;
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71 |
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72 | /* The actual start and stop values are here (cast them over)
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73 | We use this helper type and these defines so we can avoid using const memp_t values */
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74 | #define MEMP_POOL_FIRST ((memp_t) MEMP_POOL_HELPER_FIRST)
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75 | #define MEMP_POOL_LAST ((memp_t) MEMP_POOL_HELPER_LAST)
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76 | #endif /* MEM_USE_POOLS */
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77 |
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78 | #if MEMP_MEM_MALLOC || MEM_USE_POOLS
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79 | extern const u16_t memp_sizes[MEMP_MAX];
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80 | #endif /* MEMP_MEM_MALLOC || MEM_USE_POOLS */
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81 |
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82 | #if MEMP_MEM_MALLOC
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83 |
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84 | #include "mem.h"
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85 |
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86 | #define memp_init()
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87 | #define memp_malloc(type) mem_malloc(memp_sizes[type])
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88 | #define memp_free(type, mem) mem_free(mem)
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89 |
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90 | #else /* MEMP_MEM_MALLOC */
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91 |
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92 | #if MEM_USE_POOLS
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93 | /** This structure is used to save the pool one element came from. */
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94 | struct memp_malloc_helper
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95 | {
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96 | memp_t poolnr;
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97 | };
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98 | #endif /* MEM_USE_POOLS */
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99 |
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100 | void memp_init(void);
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101 |
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102 | #if MEMP_OVERFLOW_CHECK
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103 | void *memp_malloc_fn(memp_t type, const char* file, const int line);
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104 | #define memp_malloc(t) memp_malloc_fn((t), __FILE__, __LINE__)
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105 | #else
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106 | void *memp_malloc(memp_t type);
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107 | #endif
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108 | void memp_free(memp_t type, void *mem);
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109 |
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110 | #endif /* MEMP_MEM_MALLOC */
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111 |
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112 | #ifdef __cplusplus
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113 | }
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114 | #endif
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115 |
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116 | #endif /* __LWIP_MEMP_H__ */
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