7 * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
10 * Redistribution and use in source and binary forms, with or without modification,
11 * are permitted provided that the following conditions are met:
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.
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
32 * This file is part of the lwIP TCP/IP stack.
34 * Author: Adam Dunkels <adam@sics.se>
38 #ifndef LWIP_HDR_MEMP_H
39 #define LWIP_HDR_MEMP_H
47 /* run once with empty definition to handle all custom includes in lwippools.h */
48 #define LWIP_MEMPOOL(name,num,size,desc)
49 #include "lwip/priv/memp_std.h"
51 /** Create the list of all memory pools managed by memp. MEMP_MAX represents a NULL pool at the end */
53 #define LWIP_MEMPOOL(name,num,size,desc) MEMP_##name,
54 #include "lwip/priv/memp_std.h"
58 #include "lwip/priv/memp_priv.h"
59 #include "lwip/stats.h"
61 extern const struct memp_desc* const memp_pools[MEMP_MAX];
63 #if MEMP_MEM_MALLOC || MEM_USE_POOLS || LWIP_PBUF_FROM_CUSTOM_POOLS
64 extern const u16_t memp_sizes[MEMP_MAX];
65 #endif /* MEMP_MEM_MALLOC || MEM_USE_POOLS */
69 * Declare prototype for private memory pool if it is used in multiple files
71 #define LWIP_MEMPOOL_PROTOTYPE(name) extern const struct memp_desc memp_ ## name
75 #define LWIP_MEMPOOL_DECLARE(name,num,size,desc) \
76 LWIP_MEMPOOL_DECLARE_STATS_INSTANCE(memp_stats_ ## name) \
77 const struct memp_desc memp_ ## name = { \
78 DECLARE_LWIP_MEMPOOL_DESC(desc) \
79 LWIP_MEMPOOL_DECLARE_STATS_REFERENCE(memp_stats_ ## name) \
80 LWIP_MEM_ALIGN_SIZE(size) \
83 #else /* MEMP_MEM_MALLOC */
87 * Declare a private memory pool
88 * Private mempools example:
89 * .h: only when pool is used in multiple .c files: LWIP_MEMPOOL_PROTOTYPE(my_private_pool);
91 * - in global variables section: LWIP_MEMPOOL_DECLARE(my_private_pool, 10, sizeof(foo), "Some description")
92 * - call ONCE before using pool (e.g. in some init() function): LWIP_MEMPOOL_INIT(my_private_pool);
93 * - allocate: void* my_new_mem = LWIP_MEMPOOL_ALLOC(my_private_pool);
94 * - free: LWIP_MEMPOOL_FREE(my_private_pool, my_new_mem);
96 * To relocate a pool, declare it as extern in cc.h. Example for GCC:
97 * extern u8_t __attribute__((section(".onchip_mem"))) memp_memory_my_private_pool[];
99 #define LWIP_MEMPOOL_DECLARE(name,num,size,desc) \
100 LWIP_DECLARE_MEMORY_ALIGNED(memp_memory_ ## name ## _base, ((num) * (MEMP_SIZE + MEMP_ALIGN_SIZE(size)))); \
102 LWIP_MEMPOOL_DECLARE_STATS_INSTANCE(memp_stats_ ## name) \
104 static struct memp *memp_tab_ ## name; \
106 const struct memp_desc memp_ ## name = { \
107 DECLARE_LWIP_MEMPOOL_DESC(desc) \
108 LWIP_MEMPOOL_DECLARE_STATS_REFERENCE(memp_stats_ ## name) \
109 LWIP_MEM_ALIGN_SIZE(size), \
111 memp_memory_ ## name ## _base, \
115 #endif /* MEMP_MEM_MALLOC */
119 * Initialize a private memory pool
121 #define LWIP_MEMPOOL_INIT(name) memp_init_pool(&memp_ ## name)
124 * Allocate from a private memory pool
126 #define LWIP_MEMPOOL_ALLOC(name) memp_malloc_pool(&memp_ ## name)
129 * Free element from a private memory pool
131 #define LWIP_MEMPOOL_FREE(name, x) memp_free_pool(&memp_ ## name, (x))
134 /** This structure is used to save the pool one element came from.
135 * This has to be defined here as it is required for pool size calculation. */
136 struct memp_malloc_helper
139 #if MEMP_OVERFLOW_CHECK || (LWIP_STATS && MEM_STATS)
141 #endif /* MEMP_OVERFLOW_CHECK || (LWIP_STATS && MEM_STATS) */
143 #endif /* MEM_USE_POOLS */
145 void memp_init(void);
147 #if MEMP_OVERFLOW_CHECK
148 void *memp_malloc_fn(memp_t type, const char* file, const int line);
149 #define memp_malloc(t) memp_malloc_fn((t), __FILE__, __LINE__)
151 void *memp_malloc(memp_t type);
153 void memp_free(memp_t type, void *mem);
154 #if MEMP_SEPARATE_POOLS
155 u16_t memp_pbuf_index(memp_t type, const void *mem);
156 u16_t memp_num_pbufs(memp_t type);
158 u8_t memp_is_not_empty (memp_t type);
164 #endif /* LWIP_HDR_MEMP_H */