Nino Der Kinderen / Mbed 2 deprecated InetTest

Embedded C project:18/12/2014

Dependencies:   DS1307 TextLCD mbed

NetServices/lwip/core/memp.c@0:8d87bc453349, 2014-12-18 (annotated)

Committer:
ninoderkinderen
Date:
Thu Dec 18 09:35:49 2014 +0000
Revision:
0:8d87bc453349
Programma embedded C

Who changed what in which revision?

UserRevisionLine numberNew contents of line
ninoderkinderen 0:8d87bc453349 1 /**
ninoderkinderen 0:8d87bc453349 2 * @file
ninoderkinderen 0:8d87bc453349 3 * Dynamic pool memory manager
ninoderkinderen 0:8d87bc453349 4 *
ninoderkinderen 0:8d87bc453349 5 * lwIP has dedicated pools for many structures (netconn, protocol control blocks,
ninoderkinderen 0:8d87bc453349 6 * packet buffers, ...). All these pools are managed here.
ninoderkinderen 0:8d87bc453349 7 */
ninoderkinderen 0:8d87bc453349 8
ninoderkinderen 0:8d87bc453349 9 /*
ninoderkinderen 0:8d87bc453349 10 * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
ninoderkinderen 0:8d87bc453349 11 * All rights reserved.
ninoderkinderen 0:8d87bc453349 12 *
ninoderkinderen 0:8d87bc453349 13 * Redistribution and use in source and binary forms, with or without modification,
ninoderkinderen 0:8d87bc453349 14 * are permitted provided that the following conditions are met:
ninoderkinderen 0:8d87bc453349 15 *
ninoderkinderen 0:8d87bc453349 16 * 1. Redistributions of source code must retain the above copyright notice,
ninoderkinderen 0:8d87bc453349 17 * this list of conditions and the following disclaimer.
ninoderkinderen 0:8d87bc453349 18 * 2. Redistributions in binary form must reproduce the above copyright notice,
ninoderkinderen 0:8d87bc453349 19 * this list of conditions and the following disclaimer in the documentation
ninoderkinderen 0:8d87bc453349 20 * and/or other materials provided with the distribution.
ninoderkinderen 0:8d87bc453349 21 * 3. The name of the author may not be used to endorse or promote products
ninoderkinderen 0:8d87bc453349 22 * derived from this software without specific prior written permission.
ninoderkinderen 0:8d87bc453349 23 *
ninoderkinderen 0:8d87bc453349 24 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
ninoderkinderen 0:8d87bc453349 25 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
ninoderkinderen 0:8d87bc453349 26 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
ninoderkinderen 0:8d87bc453349 27 * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
ninoderkinderen 0:8d87bc453349 28 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
ninoderkinderen 0:8d87bc453349 29 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
ninoderkinderen 0:8d87bc453349 30 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
ninoderkinderen 0:8d87bc453349 31 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
ninoderkinderen 0:8d87bc453349 32 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
ninoderkinderen 0:8d87bc453349 33 * OF SUCH DAMAGE.
ninoderkinderen 0:8d87bc453349 34 *
ninoderkinderen 0:8d87bc453349 35 * This file is part of the lwIP TCP/IP stack.
ninoderkinderen 0:8d87bc453349 36 *
ninoderkinderen 0:8d87bc453349 37 * Author: Adam Dunkels <adam@sics.se>
ninoderkinderen 0:8d87bc453349 38 *
ninoderkinderen 0:8d87bc453349 39 */
ninoderkinderen 0:8d87bc453349 40
ninoderkinderen 0:8d87bc453349 41 #include "lwip/opt.h"
ninoderkinderen 0:8d87bc453349 42
ninoderkinderen 0:8d87bc453349 43 #include "lwip/memp.h"
ninoderkinderen 0:8d87bc453349 44 #include "lwip/pbuf.h"
ninoderkinderen 0:8d87bc453349 45 #include "lwip/udp.h"
ninoderkinderen 0:8d87bc453349 46 #include "lwip/raw.h"
ninoderkinderen 0:8d87bc453349 47 #include "lwip/tcp_impl.h"
ninoderkinderen 0:8d87bc453349 48 #include "lwip/igmp.h"
ninoderkinderen 0:8d87bc453349 49 #include "lwip/api.h"
ninoderkinderen 0:8d87bc453349 50 #include "lwip/api_msg.h"
ninoderkinderen 0:8d87bc453349 51 #include "lwip/tcpip.h"
ninoderkinderen 0:8d87bc453349 52 #include "lwip/sys.h"
ninoderkinderen 0:8d87bc453349 53 #include "lwip/timers.h"
ninoderkinderen 0:8d87bc453349 54 #include "lwip/stats.h"
ninoderkinderen 0:8d87bc453349 55 #include "netif/etharp.h"
ninoderkinderen 0:8d87bc453349 56 #include "lwip/ip_frag.h"
ninoderkinderen 0:8d87bc453349 57 #include "lwip/snmp_structs.h"
ninoderkinderen 0:8d87bc453349 58 #include "lwip/snmp_msg.h"
ninoderkinderen 0:8d87bc453349 59 #include "lwip/dns.h"
ninoderkinderen 0:8d87bc453349 60 #include "netif/ppp_oe.h"
ninoderkinderen 0:8d87bc453349 61
ninoderkinderen 0:8d87bc453349 62 #include <string.h>
ninoderkinderen 0:8d87bc453349 63
ninoderkinderen 0:8d87bc453349 64 #if !MEMP_MEM_MALLOC /* don't build if not configured for use in lwipopts.h */
ninoderkinderen 0:8d87bc453349 65
ninoderkinderen 0:8d87bc453349 66 struct memp {
ninoderkinderen 0:8d87bc453349 67 struct memp *next;
ninoderkinderen 0:8d87bc453349 68 #if MEMP_OVERFLOW_CHECK
ninoderkinderen 0:8d87bc453349 69 const char *file;
ninoderkinderen 0:8d87bc453349 70 int line;
ninoderkinderen 0:8d87bc453349 71 #endif /* MEMP_OVERFLOW_CHECK */
ninoderkinderen 0:8d87bc453349 72 };
ninoderkinderen 0:8d87bc453349 73
ninoderkinderen 0:8d87bc453349 74 #if MEMP_OVERFLOW_CHECK
ninoderkinderen 0:8d87bc453349 75 /* if MEMP_OVERFLOW_CHECK is turned on, we reserve some bytes at the beginning
ninoderkinderen 0:8d87bc453349 76 * and at the end of each element, initialize them as 0xcd and check
ninoderkinderen 0:8d87bc453349 77 * them later. */
ninoderkinderen 0:8d87bc453349 78 /* If MEMP_OVERFLOW_CHECK is >= 2, on every call to memp_malloc or memp_free,
ninoderkinderen 0:8d87bc453349 79 * every single element in each pool is checked!
ninoderkinderen 0:8d87bc453349 80 * This is VERY SLOW but also very helpful. */
ninoderkinderen 0:8d87bc453349 81 /* MEMP_SANITY_REGION_BEFORE and MEMP_SANITY_REGION_AFTER can be overridden in
ninoderkinderen 0:8d87bc453349 82 * lwipopts.h to change the amount reserved for checking. */
ninoderkinderen 0:8d87bc453349 83 #ifndef MEMP_SANITY_REGION_BEFORE
ninoderkinderen 0:8d87bc453349 84 #define MEMP_SANITY_REGION_BEFORE 16
ninoderkinderen 0:8d87bc453349 85 #endif /* MEMP_SANITY_REGION_BEFORE*/
ninoderkinderen 0:8d87bc453349 86 #if MEMP_SANITY_REGION_BEFORE > 0
ninoderkinderen 0:8d87bc453349 87 #define MEMP_SANITY_REGION_BEFORE_ALIGNED LWIP_MEM_ALIGN_SIZE(MEMP_SANITY_REGION_BEFORE)
ninoderkinderen 0:8d87bc453349 88 #else
ninoderkinderen 0:8d87bc453349 89 #define MEMP_SANITY_REGION_BEFORE_ALIGNED 0
ninoderkinderen 0:8d87bc453349 90 #endif /* MEMP_SANITY_REGION_BEFORE*/
ninoderkinderen 0:8d87bc453349 91 #ifndef MEMP_SANITY_REGION_AFTER
ninoderkinderen 0:8d87bc453349 92 #define MEMP_SANITY_REGION_AFTER 16
ninoderkinderen 0:8d87bc453349 93 #endif /* MEMP_SANITY_REGION_AFTER*/
ninoderkinderen 0:8d87bc453349 94 #if MEMP_SANITY_REGION_AFTER > 0
ninoderkinderen 0:8d87bc453349 95 #define MEMP_SANITY_REGION_AFTER_ALIGNED LWIP_MEM_ALIGN_SIZE(MEMP_SANITY_REGION_AFTER)
ninoderkinderen 0:8d87bc453349 96 #else
ninoderkinderen 0:8d87bc453349 97 #define MEMP_SANITY_REGION_AFTER_ALIGNED 0
ninoderkinderen 0:8d87bc453349 98 #endif /* MEMP_SANITY_REGION_AFTER*/
ninoderkinderen 0:8d87bc453349 99
ninoderkinderen 0:8d87bc453349 100 /* MEMP_SIZE: save space for struct memp and for sanity check */
ninoderkinderen 0:8d87bc453349 101 #define MEMP_SIZE (LWIP_MEM_ALIGN_SIZE(sizeof(struct memp)) + MEMP_SANITY_REGION_BEFORE_ALIGNED)
ninoderkinderen 0:8d87bc453349 102 #define MEMP_ALIGN_SIZE(x) (LWIP_MEM_ALIGN_SIZE(x) + MEMP_SANITY_REGION_AFTER_ALIGNED)
ninoderkinderen 0:8d87bc453349 103
ninoderkinderen 0:8d87bc453349 104 #else /* MEMP_OVERFLOW_CHECK */
ninoderkinderen 0:8d87bc453349 105
ninoderkinderen 0:8d87bc453349 106 /* No sanity checks
ninoderkinderen 0:8d87bc453349 107 * We don't need to preserve the struct memp while not allocated, so we
ninoderkinderen 0:8d87bc453349 108 * can save a little space and set MEMP_SIZE to 0.
ninoderkinderen 0:8d87bc453349 109 */
ninoderkinderen 0:8d87bc453349 110 #define MEMP_SIZE 0
ninoderkinderen 0:8d87bc453349 111 #define MEMP_ALIGN_SIZE(x) (LWIP_MEM_ALIGN_SIZE(x))
ninoderkinderen 0:8d87bc453349 112
ninoderkinderen 0:8d87bc453349 113 #endif /* MEMP_OVERFLOW_CHECK */
ninoderkinderen 0:8d87bc453349 114
ninoderkinderen 0:8d87bc453349 115 /** This array holds the first free element of each pool.
ninoderkinderen 0:8d87bc453349 116 * Elements form a linked list. */
ninoderkinderen 0:8d87bc453349 117 static struct memp *memp_tab[MEMP_MAX] MEM_POSITION;
ninoderkinderen 0:8d87bc453349 118
ninoderkinderen 0:8d87bc453349 119 #else /* MEMP_MEM_MALLOC */
ninoderkinderen 0:8d87bc453349 120
ninoderkinderen 0:8d87bc453349 121 #define MEMP_ALIGN_SIZE(x) (LWIP_MEM_ALIGN_SIZE(x))
ninoderkinderen 0:8d87bc453349 122
ninoderkinderen 0:8d87bc453349 123 #endif /* MEMP_MEM_MALLOC */
ninoderkinderen 0:8d87bc453349 124
ninoderkinderen 0:8d87bc453349 125 /** This array holds the element sizes of each pool. */
ninoderkinderen 0:8d87bc453349 126 #if !MEM_USE_POOLS && !MEMP_MEM_MALLOC
ninoderkinderen 0:8d87bc453349 127 static
ninoderkinderen 0:8d87bc453349 128 #endif
ninoderkinderen 0:8d87bc453349 129 const u16_t memp_sizes[MEMP_MAX] = {
ninoderkinderen 0:8d87bc453349 130 #define LWIP_MEMPOOL(name,num,size,desc) LWIP_MEM_ALIGN_SIZE(size),
ninoderkinderen 0:8d87bc453349 131 #include "lwip/memp_std.h"
ninoderkinderen 0:8d87bc453349 132 };
ninoderkinderen 0:8d87bc453349 133
ninoderkinderen 0:8d87bc453349 134 #if !MEMP_MEM_MALLOC /* don't build if not configured for use in lwipopts.h */
ninoderkinderen 0:8d87bc453349 135
ninoderkinderen 0:8d87bc453349 136 /** This array holds the number of elements in each pool. */
ninoderkinderen 0:8d87bc453349 137 static const u16_t memp_num[MEMP_MAX] = {
ninoderkinderen 0:8d87bc453349 138 #define LWIP_MEMPOOL(name,num,size,desc) (num),
ninoderkinderen 0:8d87bc453349 139 #include "lwip/memp_std.h"
ninoderkinderen 0:8d87bc453349 140 };
ninoderkinderen 0:8d87bc453349 141
ninoderkinderen 0:8d87bc453349 142 /** This array holds a textual description of each pool. */
ninoderkinderen 0:8d87bc453349 143 #ifdef LWIP_DEBUG
ninoderkinderen 0:8d87bc453349 144 static const char *memp_desc[MEMP_MAX] = {
ninoderkinderen 0:8d87bc453349 145 #define LWIP_MEMPOOL(name,num,size,desc) (desc),
ninoderkinderen 0:8d87bc453349 146 #include "lwip/memp_std.h"
ninoderkinderen 0:8d87bc453349 147 };
ninoderkinderen 0:8d87bc453349 148 #endif /* LWIP_DEBUG */
ninoderkinderen 0:8d87bc453349 149
ninoderkinderen 0:8d87bc453349 150 #if MEMP_SEPARATE_POOLS
ninoderkinderen 0:8d87bc453349 151
ninoderkinderen 0:8d87bc453349 152 /** This creates each memory pool. These are named memp_memory_XXX_base (where
ninoderkinderen 0:8d87bc453349 153 * XXX is the name of the pool defined in memp_std.h).
ninoderkinderen 0:8d87bc453349 154 * To relocate a pool, declare it as extern in cc.h. Example for GCC:
ninoderkinderen 0:8d87bc453349 155 * extern u8_t __attribute__((section(".onchip_mem"))) memp_memory_UDP_PCB_base[];
ninoderkinderen 0:8d87bc453349 156 */
ninoderkinderen 0:8d87bc453349 157 #define LWIP_MEMPOOL(name,num,size,desc) u8_t memp_memory_ ## name ## _base \
ninoderkinderen 0:8d87bc453349 158 [((num) * (MEMP_SIZE + MEMP_ALIGN_SIZE(size)))];
ninoderkinderen 0:8d87bc453349 159 #include "lwip/memp_std.h"
ninoderkinderen 0:8d87bc453349 160
ninoderkinderen 0:8d87bc453349 161 /** This array holds the base of each memory pool. */
ninoderkinderen 0:8d87bc453349 162 static u8_t *const memp_bases[] = {
ninoderkinderen 0:8d87bc453349 163 #define LWIP_MEMPOOL(name,num,size,desc) memp_memory_ ## name ## _base,
ninoderkinderen 0:8d87bc453349 164 #include "lwip/memp_std.h"
ninoderkinderen 0:8d87bc453349 165 } MEM_POSITION;
ninoderkinderen 0:8d87bc453349 166
ninoderkinderen 0:8d87bc453349 167 #else /* MEMP_SEPARATE_POOLS */
ninoderkinderen 0:8d87bc453349 168
ninoderkinderen 0:8d87bc453349 169 /** This is the actual memory used by the pools (all pools in one big block). */
ninoderkinderen 0:8d87bc453349 170 static u8_t memp_memory[MEM_ALIGNMENT - 1
ninoderkinderen 0:8d87bc453349 171 #define LWIP_MEMPOOL(name,num,size,desc) + ( (num) * (MEMP_SIZE + MEMP_ALIGN_SIZE(size) ) )
ninoderkinderen 0:8d87bc453349 172 #include "lwip/memp_std.h"
ninoderkinderen 0:8d87bc453349 173 ] MEM_POSITION;
ninoderkinderen 0:8d87bc453349 174
ninoderkinderen 0:8d87bc453349 175 #endif /* MEMP_SEPARATE_POOLS */
ninoderkinderen 0:8d87bc453349 176
ninoderkinderen 0:8d87bc453349 177 #if MEMP_SANITY_CHECK
ninoderkinderen 0:8d87bc453349 178 /**
ninoderkinderen 0:8d87bc453349 179 * Check that memp-lists don't form a circle
ninoderkinderen 0:8d87bc453349 180 */
ninoderkinderen 0:8d87bc453349 181 static int
ninoderkinderen 0:8d87bc453349 182 memp_sanity(void)
ninoderkinderen 0:8d87bc453349 183 {
ninoderkinderen 0:8d87bc453349 184 s16_t i, c;
ninoderkinderen 0:8d87bc453349 185 struct memp *m, *n;
ninoderkinderen 0:8d87bc453349 186
ninoderkinderen 0:8d87bc453349 187 for (i = 0; i < MEMP_MAX; i++) {
ninoderkinderen 0:8d87bc453349 188 for (m = memp_tab[i]; m != NULL; m = m->next) {
ninoderkinderen 0:8d87bc453349 189 c = 1;
ninoderkinderen 0:8d87bc453349 190 for (n = memp_tab[i]; n != NULL; n = n->next) {
ninoderkinderen 0:8d87bc453349 191 if (n == m && --c < 0) {
ninoderkinderen 0:8d87bc453349 192 return 0;
ninoderkinderen 0:8d87bc453349 193 }
ninoderkinderen 0:8d87bc453349 194 }
ninoderkinderen 0:8d87bc453349 195 }
ninoderkinderen 0:8d87bc453349 196 }
ninoderkinderen 0:8d87bc453349 197 return 1;
ninoderkinderen 0:8d87bc453349 198 }
ninoderkinderen 0:8d87bc453349 199 #endif /* MEMP_SANITY_CHECK*/
ninoderkinderen 0:8d87bc453349 200 #if MEMP_OVERFLOW_CHECK
ninoderkinderen 0:8d87bc453349 201 #if defined(LWIP_DEBUG) && MEMP_STATS
ninoderkinderen 0:8d87bc453349 202 static const char * memp_overflow_names[] = {
ninoderkinderen 0:8d87bc453349 203 #define LWIP_MEMPOOL(name,num,size,desc) "/"desc,
ninoderkinderen 0:8d87bc453349 204 #include "lwip/memp_std.h"
ninoderkinderen 0:8d87bc453349 205 };
ninoderkinderen 0:8d87bc453349 206 #endif
ninoderkinderen 0:8d87bc453349 207
ninoderkinderen 0:8d87bc453349 208 /**
ninoderkinderen 0:8d87bc453349 209 * Check if a memp element was victim of an overflow
ninoderkinderen 0:8d87bc453349 210 * (e.g. the restricted area after it has been altered)
ninoderkinderen 0:8d87bc453349 211 *
ninoderkinderen 0:8d87bc453349 212 * @param p the memp element to check
ninoderkinderen 0:8d87bc453349 213 * @param memp_type the pool p comes from
ninoderkinderen 0:8d87bc453349 214 */
ninoderkinderen 0:8d87bc453349 215 static void
ninoderkinderen 0:8d87bc453349 216 memp_overflow_check_element_overflow(struct memp *p, u16_t memp_type)
ninoderkinderen 0:8d87bc453349 217 {
ninoderkinderen 0:8d87bc453349 218 u16_t k;
ninoderkinderen 0:8d87bc453349 219 u8_t *m;
ninoderkinderen 0:8d87bc453349 220 #if MEMP_SANITY_REGION_AFTER_ALIGNED > 0
ninoderkinderen 0:8d87bc453349 221 m = (u8_t*)p + MEMP_SIZE + memp_sizes[memp_type];
ninoderkinderen 0:8d87bc453349 222 for (k = 0; k < MEMP_SANITY_REGION_AFTER_ALIGNED; k++) {
ninoderkinderen 0:8d87bc453349 223 if (m[k] != 0xcd) {
ninoderkinderen 0:8d87bc453349 224 char errstr[128] = "detected memp overflow in pool ";
ninoderkinderen 0:8d87bc453349 225 char digit[] = "0";
ninoderkinderen 0:8d87bc453349 226 if(memp_type >= 10) {
ninoderkinderen 0:8d87bc453349 227 digit[0] = '0' + (memp_type/10);
ninoderkinderen 0:8d87bc453349 228 strcat(errstr, digit);
ninoderkinderen 0:8d87bc453349 229 }
ninoderkinderen 0:8d87bc453349 230 digit[0] = '0' + (memp_type%10);
ninoderkinderen 0:8d87bc453349 231 strcat(errstr, digit);
ninoderkinderen 0:8d87bc453349 232 #if defined(LWIP_DEBUG) && MEMP_STATS
ninoderkinderen 0:8d87bc453349 233 strcat(errstr, memp_overflow_names[memp_type]);
ninoderkinderen 0:8d87bc453349 234 #endif
ninoderkinderen 0:8d87bc453349 235 LWIP_ASSERT(errstr, 0);
ninoderkinderen 0:8d87bc453349 236 }
ninoderkinderen 0:8d87bc453349 237 }
ninoderkinderen 0:8d87bc453349 238 #endif
ninoderkinderen 0:8d87bc453349 239 }
ninoderkinderen 0:8d87bc453349 240
ninoderkinderen 0:8d87bc453349 241 /**
ninoderkinderen 0:8d87bc453349 242 * Check if a memp element was victim of an underflow
ninoderkinderen 0:8d87bc453349 243 * (e.g. the restricted area before it has been altered)
ninoderkinderen 0:8d87bc453349 244 *
ninoderkinderen 0:8d87bc453349 245 * @param p the memp element to check
ninoderkinderen 0:8d87bc453349 246 * @param memp_type the pool p comes from
ninoderkinderen 0:8d87bc453349 247 */
ninoderkinderen 0:8d87bc453349 248 static void
ninoderkinderen 0:8d87bc453349 249 memp_overflow_check_element_underflow(struct memp *p, u16_t memp_type)
ninoderkinderen 0:8d87bc453349 250 {
ninoderkinderen 0:8d87bc453349 251 u16_t k;
ninoderkinderen 0:8d87bc453349 252 u8_t *m;
ninoderkinderen 0:8d87bc453349 253 #if MEMP_SANITY_REGION_BEFORE_ALIGNED > 0
ninoderkinderen 0:8d87bc453349 254 m = (u8_t*)p + MEMP_SIZE - MEMP_SANITY_REGION_BEFORE_ALIGNED;
ninoderkinderen 0:8d87bc453349 255 for (k = 0; k < MEMP_SANITY_REGION_BEFORE_ALIGNED; k++) {
ninoderkinderen 0:8d87bc453349 256 if (m[k] != 0xcd) {
ninoderkinderen 0:8d87bc453349 257 char errstr[128] = "detected memp underflow in pool ";
ninoderkinderen 0:8d87bc453349 258 char digit[] = "0";
ninoderkinderen 0:8d87bc453349 259 if(memp_type >= 10) {
ninoderkinderen 0:8d87bc453349 260 digit[0] = '0' + (memp_type/10);
ninoderkinderen 0:8d87bc453349 261 strcat(errstr, digit);
ninoderkinderen 0:8d87bc453349 262 }
ninoderkinderen 0:8d87bc453349 263 digit[0] = '0' + (memp_type%10);
ninoderkinderen 0:8d87bc453349 264 strcat(errstr, digit);
ninoderkinderen 0:8d87bc453349 265 #if defined(LWIP_DEBUG) && MEMP_STATS
ninoderkinderen 0:8d87bc453349 266 strcat(errstr, memp_overflow_names[memp_type]);
ninoderkinderen 0:8d87bc453349 267 #endif
ninoderkinderen 0:8d87bc453349 268 LWIP_ASSERT(errstr, 0);
ninoderkinderen 0:8d87bc453349 269 }
ninoderkinderen 0:8d87bc453349 270 }
ninoderkinderen 0:8d87bc453349 271 #endif
ninoderkinderen 0:8d87bc453349 272 }
ninoderkinderen 0:8d87bc453349 273
ninoderkinderen 0:8d87bc453349 274 /**
ninoderkinderen 0:8d87bc453349 275 * Do an overflow check for all elements in every pool.
ninoderkinderen 0:8d87bc453349 276 *
ninoderkinderen 0:8d87bc453349 277 * @see memp_overflow_check_element for a description of the check
ninoderkinderen 0:8d87bc453349 278 */
ninoderkinderen 0:8d87bc453349 279 static void
ninoderkinderen 0:8d87bc453349 280 memp_overflow_check_all(void)
ninoderkinderen 0:8d87bc453349 281 {
ninoderkinderen 0:8d87bc453349 282 u16_t i, j;
ninoderkinderen 0:8d87bc453349 283 struct memp *p;
ninoderkinderen 0:8d87bc453349 284
ninoderkinderen 0:8d87bc453349 285 p = (struct memp *)LWIP_MEM_ALIGN(memp_memory);
ninoderkinderen 0:8d87bc453349 286 for (i = 0; i < MEMP_MAX; ++i) {
ninoderkinderen 0:8d87bc453349 287 p = p;
ninoderkinderen 0:8d87bc453349 288 for (j = 0; j < memp_num[i]; ++j) {
ninoderkinderen 0:8d87bc453349 289 memp_overflow_check_element_overflow(p, i);
ninoderkinderen 0:8d87bc453349 290 p = (struct memp*)((u8_t*)p + MEMP_SIZE + memp_sizes[i] + MEMP_SANITY_REGION_AFTER_ALIGNED);
ninoderkinderen 0:8d87bc453349 291 }
ninoderkinderen 0:8d87bc453349 292 }
ninoderkinderen 0:8d87bc453349 293 p = (struct memp *)LWIP_MEM_ALIGN(memp_memory);
ninoderkinderen 0:8d87bc453349 294 for (i = 0; i < MEMP_MAX; ++i) {
ninoderkinderen 0:8d87bc453349 295 p = p;
ninoderkinderen 0:8d87bc453349 296 for (j = 0; j < memp_num[i]; ++j) {
ninoderkinderen 0:8d87bc453349 297 memp_overflow_check_element_underflow(p, i);
ninoderkinderen 0:8d87bc453349 298 p = (struct memp*)((u8_t*)p + MEMP_SIZE + memp_sizes[i] + MEMP_SANITY_REGION_AFTER_ALIGNED);
ninoderkinderen 0:8d87bc453349 299 }
ninoderkinderen 0:8d87bc453349 300 }
ninoderkinderen 0:8d87bc453349 301 }
ninoderkinderen 0:8d87bc453349 302
ninoderkinderen 0:8d87bc453349 303 /**
ninoderkinderen 0:8d87bc453349 304 * Initialize the restricted areas of all memp elements in every pool.
ninoderkinderen 0:8d87bc453349 305 */
ninoderkinderen 0:8d87bc453349 306 static void
ninoderkinderen 0:8d87bc453349 307 memp_overflow_init(void)
ninoderkinderen 0:8d87bc453349 308 {
ninoderkinderen 0:8d87bc453349 309 u16_t i, j;
ninoderkinderen 0:8d87bc453349 310 struct memp *p;
ninoderkinderen 0:8d87bc453349 311 u8_t *m;
ninoderkinderen 0:8d87bc453349 312
ninoderkinderen 0:8d87bc453349 313 p = (struct memp *)LWIP_MEM_ALIGN(memp_memory);
ninoderkinderen 0:8d87bc453349 314 for (i = 0; i < MEMP_MAX; ++i) {
ninoderkinderen 0:8d87bc453349 315 p = p;
ninoderkinderen 0:8d87bc453349 316 for (j = 0; j < memp_num[i]; ++j) {
ninoderkinderen 0:8d87bc453349 317 #if MEMP_SANITY_REGION_BEFORE_ALIGNED > 0
ninoderkinderen 0:8d87bc453349 318 m = (u8_t*)p + MEMP_SIZE - MEMP_SANITY_REGION_BEFORE_ALIGNED;
ninoderkinderen 0:8d87bc453349 319 memset(m, 0xcd, MEMP_SANITY_REGION_BEFORE_ALIGNED);
ninoderkinderen 0:8d87bc453349 320 #endif
ninoderkinderen 0:8d87bc453349 321 #if MEMP_SANITY_REGION_AFTER_ALIGNED > 0
ninoderkinderen 0:8d87bc453349 322 m = (u8_t*)p + MEMP_SIZE + memp_sizes[i];
ninoderkinderen 0:8d87bc453349 323 memset(m, 0xcd, MEMP_SANITY_REGION_AFTER_ALIGNED);
ninoderkinderen 0:8d87bc453349 324 #endif
ninoderkinderen 0:8d87bc453349 325 p = (struct memp*)((u8_t*)p + MEMP_SIZE + memp_sizes[i] + MEMP_SANITY_REGION_AFTER_ALIGNED);
ninoderkinderen 0:8d87bc453349 326 }
ninoderkinderen 0:8d87bc453349 327 }
ninoderkinderen 0:8d87bc453349 328 }
ninoderkinderen 0:8d87bc453349 329 #endif /* MEMP_OVERFLOW_CHECK */
ninoderkinderen 0:8d87bc453349 330
ninoderkinderen 0:8d87bc453349 331 /**
ninoderkinderen 0:8d87bc453349 332 * Initialize this module.
ninoderkinderen 0:8d87bc453349 333 *
ninoderkinderen 0:8d87bc453349 334 * Carves out memp_memory into linked lists for each pool-type.
ninoderkinderen 0:8d87bc453349 335 */
ninoderkinderen 0:8d87bc453349 336 void
ninoderkinderen 0:8d87bc453349 337 memp_init(void)
ninoderkinderen 0:8d87bc453349 338 {
ninoderkinderen 0:8d87bc453349 339 struct memp *memp;
ninoderkinderen 0:8d87bc453349 340 u16_t i, j;
ninoderkinderen 0:8d87bc453349 341
ninoderkinderen 0:8d87bc453349 342 for (i = 0; i < MEMP_MAX; ++i) {
ninoderkinderen 0:8d87bc453349 343 MEMP_STATS_AVAIL(used, i, 0);
ninoderkinderen 0:8d87bc453349 344 MEMP_STATS_AVAIL(max, i, 0);
ninoderkinderen 0:8d87bc453349 345 MEMP_STATS_AVAIL(err, i, 0);
ninoderkinderen 0:8d87bc453349 346 MEMP_STATS_AVAIL(avail, i, memp_num[i]);
ninoderkinderen 0:8d87bc453349 347 }
ninoderkinderen 0:8d87bc453349 348
ninoderkinderen 0:8d87bc453349 349 #if !MEMP_SEPARATE_POOLS
ninoderkinderen 0:8d87bc453349 350 memp = (struct memp *)LWIP_MEM_ALIGN(memp_memory);
ninoderkinderen 0:8d87bc453349 351 #endif /* !MEMP_SEPARATE_POOLS */
ninoderkinderen 0:8d87bc453349 352 /* for every pool: */
ninoderkinderen 0:8d87bc453349 353 for (i = 0; i < MEMP_MAX; ++i) {
ninoderkinderen 0:8d87bc453349 354 memp_tab[i] = NULL;
ninoderkinderen 0:8d87bc453349 355 #if MEMP_SEPARATE_POOLS
ninoderkinderen 0:8d87bc453349 356 memp = (struct memp*)memp_bases[i];
ninoderkinderen 0:8d87bc453349 357 #endif /* MEMP_SEPARATE_POOLS */
ninoderkinderen 0:8d87bc453349 358 /* create a linked list of memp elements */
ninoderkinderen 0:8d87bc453349 359 for (j = 0; j < memp_num[i]; ++j) {
ninoderkinderen 0:8d87bc453349 360 memp->next = memp_tab[i];
ninoderkinderen 0:8d87bc453349 361 memp_tab[i] = memp;
ninoderkinderen 0:8d87bc453349 362 memp = (struct memp *)(void *)((u8_t *)memp + MEMP_SIZE + memp_sizes[i]
ninoderkinderen 0:8d87bc453349 363 #if MEMP_OVERFLOW_CHECK
ninoderkinderen 0:8d87bc453349 364 + MEMP_SANITY_REGION_AFTER_ALIGNED
ninoderkinderen 0:8d87bc453349 365 #endif
ninoderkinderen 0:8d87bc453349 366 );
ninoderkinderen 0:8d87bc453349 367 }
ninoderkinderen 0:8d87bc453349 368 }
ninoderkinderen 0:8d87bc453349 369 #if MEMP_OVERFLOW_CHECK
ninoderkinderen 0:8d87bc453349 370 memp_overflow_init();
ninoderkinderen 0:8d87bc453349 371 /* check everything a first time to see if it worked */
ninoderkinderen 0:8d87bc453349 372 memp_overflow_check_all();
ninoderkinderen 0:8d87bc453349 373 #endif /* MEMP_OVERFLOW_CHECK */
ninoderkinderen 0:8d87bc453349 374 }
ninoderkinderen 0:8d87bc453349 375
ninoderkinderen 0:8d87bc453349 376 /**
ninoderkinderen 0:8d87bc453349 377 * Get an element from a specific pool.
ninoderkinderen 0:8d87bc453349 378 *
ninoderkinderen 0:8d87bc453349 379 * @param type the pool to get an element from
ninoderkinderen 0:8d87bc453349 380 *
ninoderkinderen 0:8d87bc453349 381 * the debug version has two more parameters:
ninoderkinderen 0:8d87bc453349 382 * @param file file name calling this function
ninoderkinderen 0:8d87bc453349 383 * @param line number of line where this function is called
ninoderkinderen 0:8d87bc453349 384 *
ninoderkinderen 0:8d87bc453349 385 * @return a pointer to the allocated memory or a NULL pointer on error
ninoderkinderen 0:8d87bc453349 386 */
ninoderkinderen 0:8d87bc453349 387 void *
ninoderkinderen 0:8d87bc453349 388 #if !MEMP_OVERFLOW_CHECK
ninoderkinderen 0:8d87bc453349 389 memp_malloc(memp_t type)
ninoderkinderen 0:8d87bc453349 390 #else
ninoderkinderen 0:8d87bc453349 391 memp_malloc_fn(memp_t type, const char* file, const int line)
ninoderkinderen 0:8d87bc453349 392 #endif
ninoderkinderen 0:8d87bc453349 393 {
ninoderkinderen 0:8d87bc453349 394 struct memp *memp;
ninoderkinderen 0:8d87bc453349 395 SYS_ARCH_DECL_PROTECT(old_level);
ninoderkinderen 0:8d87bc453349 396
ninoderkinderen 0:8d87bc453349 397 LWIP_ERROR("memp_malloc: type < MEMP_MAX", (type < MEMP_MAX), return NULL;);
ninoderkinderen 0:8d87bc453349 398
ninoderkinderen 0:8d87bc453349 399 SYS_ARCH_PROTECT(old_level);
ninoderkinderen 0:8d87bc453349 400 #if MEMP_OVERFLOW_CHECK >= 2
ninoderkinderen 0:8d87bc453349 401 memp_overflow_check_all();
ninoderkinderen 0:8d87bc453349 402 #endif /* MEMP_OVERFLOW_CHECK >= 2 */
ninoderkinderen 0:8d87bc453349 403
ninoderkinderen 0:8d87bc453349 404 memp = memp_tab[type];
ninoderkinderen 0:8d87bc453349 405
ninoderkinderen 0:8d87bc453349 406 if (memp != NULL) {
ninoderkinderen 0:8d87bc453349 407 memp_tab[type] = memp->next;
ninoderkinderen 0:8d87bc453349 408 #if MEMP_OVERFLOW_CHECK
ninoderkinderen 0:8d87bc453349 409 memp->next = NULL;
ninoderkinderen 0:8d87bc453349 410 memp->file = file;
ninoderkinderen 0:8d87bc453349 411 memp->line = line;
ninoderkinderen 0:8d87bc453349 412 #endif /* MEMP_OVERFLOW_CHECK */
ninoderkinderen 0:8d87bc453349 413 MEMP_STATS_INC_USED(used, type);
ninoderkinderen 0:8d87bc453349 414 LWIP_ASSERT("memp_malloc: memp properly aligned",
ninoderkinderen 0:8d87bc453349 415 ((mem_ptr_t)memp % MEM_ALIGNMENT) == 0);
ninoderkinderen 0:8d87bc453349 416 memp = (struct memp*)(void *)((u8_t*)memp + MEMP_SIZE);
ninoderkinderen 0:8d87bc453349 417 } else {
ninoderkinderen 0:8d87bc453349 418 LWIP_DEBUGF(MEMP_DEBUG | LWIP_DBG_LEVEL_SERIOUS, ("memp_malloc: out of memory in pool %s\n", memp_desc[type]));
ninoderkinderen 0:8d87bc453349 419 MEMP_STATS_INC(err, type);
ninoderkinderen 0:8d87bc453349 420 }
ninoderkinderen 0:8d87bc453349 421
ninoderkinderen 0:8d87bc453349 422 SYS_ARCH_UNPROTECT(old_level);
ninoderkinderen 0:8d87bc453349 423
ninoderkinderen 0:8d87bc453349 424 return memp;
ninoderkinderen 0:8d87bc453349 425 }
ninoderkinderen 0:8d87bc453349 426
ninoderkinderen 0:8d87bc453349 427 /**
ninoderkinderen 0:8d87bc453349 428 * Put an element back into its pool.
ninoderkinderen 0:8d87bc453349 429 *
ninoderkinderen 0:8d87bc453349 430 * @param type the pool where to put mem
ninoderkinderen 0:8d87bc453349 431 * @param mem the memp element to free
ninoderkinderen 0:8d87bc453349 432 */
ninoderkinderen 0:8d87bc453349 433 void
ninoderkinderen 0:8d87bc453349 434 memp_free(memp_t type, void *mem)
ninoderkinderen 0:8d87bc453349 435 {
ninoderkinderen 0:8d87bc453349 436 struct memp *memp;
ninoderkinderen 0:8d87bc453349 437 SYS_ARCH_DECL_PROTECT(old_level);
ninoderkinderen 0:8d87bc453349 438
ninoderkinderen 0:8d87bc453349 439 if (mem == NULL) {
ninoderkinderen 0:8d87bc453349 440 return;
ninoderkinderen 0:8d87bc453349 441 }
ninoderkinderen 0:8d87bc453349 442 LWIP_ASSERT("memp_free: mem properly aligned",
ninoderkinderen 0:8d87bc453349 443 ((mem_ptr_t)mem % MEM_ALIGNMENT) == 0);
ninoderkinderen 0:8d87bc453349 444
ninoderkinderen 0:8d87bc453349 445 memp = (struct memp *)(void *)((u8_t*)mem - MEMP_SIZE);
ninoderkinderen 0:8d87bc453349 446
ninoderkinderen 0:8d87bc453349 447 SYS_ARCH_PROTECT(old_level);
ninoderkinderen 0:8d87bc453349 448 #if MEMP_OVERFLOW_CHECK
ninoderkinderen 0:8d87bc453349 449 #if MEMP_OVERFLOW_CHECK >= 2
ninoderkinderen 0:8d87bc453349 450 memp_overflow_check_all();
ninoderkinderen 0:8d87bc453349 451 #else
ninoderkinderen 0:8d87bc453349 452 memp_overflow_check_element_overflow(memp, type);
ninoderkinderen 0:8d87bc453349 453 memp_overflow_check_element_underflow(memp, type);
ninoderkinderen 0:8d87bc453349 454 #endif /* MEMP_OVERFLOW_CHECK >= 2 */
ninoderkinderen 0:8d87bc453349 455 #endif /* MEMP_OVERFLOW_CHECK */
ninoderkinderen 0:8d87bc453349 456
ninoderkinderen 0:8d87bc453349 457 MEMP_STATS_DEC(used, type);
ninoderkinderen 0:8d87bc453349 458
ninoderkinderen 0:8d87bc453349 459 memp->next = memp_tab[type];
ninoderkinderen 0:8d87bc453349 460 memp_tab[type] = memp;
ninoderkinderen 0:8d87bc453349 461
ninoderkinderen 0:8d87bc453349 462 #if MEMP_SANITY_CHECK
ninoderkinderen 0:8d87bc453349 463 LWIP_ASSERT("memp sanity", memp_sanity());
ninoderkinderen 0:8d87bc453349 464 #endif /* MEMP_SANITY_CHECK */
ninoderkinderen 0:8d87bc453349 465
ninoderkinderen 0:8d87bc453349 466 SYS_ARCH_UNPROTECT(old_level);
ninoderkinderen 0:8d87bc453349 467 }
ninoderkinderen 0:8d87bc453349 468
ninoderkinderen 0:8d87bc453349 469 #endif /* MEMP_MEM_MALLOC */