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发表于 2017-1-7 16:48:03
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本帖最后由 aozima 于 2017-1-7 16:51 编辑
改配置。加多NET_CONN和socket数量。
UDP也会占用掉这个数量。
可以把memp.c更新为下面的,来dump一下这些数量就明白了。
- /**
- * @file
- * Dynamic pool memory manager
- *
- * lwIP has dedicated pools for many structures (netconn, protocol control blocks,
- * packet buffers, ...). All these pools are managed here.
- */
- /*
- * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without modification,
- * are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice,
- * this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- * this list of conditions and the following disclaimer in the documentation
- * and/or other materials provided with the distribution.
- * 3. The name of the author may not be used to endorse or promote products
- * derived from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
- * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
- * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
- * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
- * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
- * OF SUCH DAMAGE.
- *
- * This file is part of the lwIP TCP/IP stack.
- *
- * Author: Adam Dunkels <adam@sics.se>
- *
- */
- #include "lwip/opt.h"
- #include "lwip/memp.h"
- #include "lwip/pbuf.h"
- #include "lwip/udp.h"
- #include "lwip/raw.h"
- #include "lwip/tcp_impl.h"
- #include "lwip/igmp.h"
- #include "lwip/api.h"
- #include "lwip/api_msg.h"
- #include "lwip/tcpip.h"
- #include "lwip/sys.h"
- #include "lwip/timers.h"
- #include "lwip/stats.h"
- #include "netif/etharp.h"
- #include "lwip/ip_frag.h"
- #include "lwip/snmp_structs.h"
- #include "lwip/snmp_msg.h"
- #include "lwip/dns.h"
- #include "netif/ppp_oe.h"
- #include <string.h>
- #if !MEMP_MEM_MALLOC /* don't build if not configured for use in lwipopts.h */
- struct memp {
- struct memp *next;
- #if MEMP_OVERFLOW_CHECK
- const char *file;
- int line;
- #endif /* MEMP_OVERFLOW_CHECK */
- };
- #if MEMP_OVERFLOW_CHECK
- /* if MEMP_OVERFLOW_CHECK is turned on, we reserve some bytes at the beginning
- * and at the end of each element, initialize them as 0xcd and check
- * them later. */
- /* If MEMP_OVERFLOW_CHECK is >= 2, on every call to memp_malloc or memp_free,
- * every single element in each pool is checked!
- * This is VERY SLOW but also very helpful. */
- /* MEMP_SANITY_REGION_BEFORE and MEMP_SANITY_REGION_AFTER can be overridden in
- * lwipopts.h to change the amount reserved for checking. */
- #ifndef MEMP_SANITY_REGION_BEFORE
- #define MEMP_SANITY_REGION_BEFORE 16
- #endif /* MEMP_SANITY_REGION_BEFORE*/
- #if MEMP_SANITY_REGION_BEFORE > 0
- #define MEMP_SANITY_REGION_BEFORE_ALIGNED LWIP_MEM_ALIGN_SIZE(MEMP_SANITY_REGION_BEFORE)
- #else
- #define MEMP_SANITY_REGION_BEFORE_ALIGNED 0
- #endif /* MEMP_SANITY_REGION_BEFORE*/
- #ifndef MEMP_SANITY_REGION_AFTER
- #define MEMP_SANITY_REGION_AFTER 16
- #endif /* MEMP_SANITY_REGION_AFTER*/
- #if MEMP_SANITY_REGION_AFTER > 0
- #define MEMP_SANITY_REGION_AFTER_ALIGNED LWIP_MEM_ALIGN_SIZE(MEMP_SANITY_REGION_AFTER)
- #else
- #define MEMP_SANITY_REGION_AFTER_ALIGNED 0
- #endif /* MEMP_SANITY_REGION_AFTER*/
- /* MEMP_SIZE: save space for struct memp and for sanity check */
- #define MEMP_SIZE (LWIP_MEM_ALIGN_SIZE(sizeof(struct memp)) + MEMP_SANITY_REGION_BEFORE_ALIGNED)
- #define MEMP_ALIGN_SIZE(x) (LWIP_MEM_ALIGN_SIZE(x) + MEMP_SANITY_REGION_AFTER_ALIGNED)
- #else /* MEMP_OVERFLOW_CHECK */
- /* No sanity checks
- * We don't need to preserve the struct memp while not allocated, so we
- * can save a little space and set MEMP_SIZE to 0.
- */
- #define MEMP_SIZE 0
- #define MEMP_ALIGN_SIZE(x) (LWIP_MEM_ALIGN_SIZE(x))
- #endif /* MEMP_OVERFLOW_CHECK */
- /** This array holds the first free element of each pool.
- * Elements form a linked list. */
- static struct memp *memp_tab[MEMP_MAX];
- #else /* MEMP_MEM_MALLOC */
- #define MEMP_ALIGN_SIZE(x) (LWIP_MEM_ALIGN_SIZE(x))
- #endif /* MEMP_MEM_MALLOC */
- /** This array holds the element sizes of each pool. */
- #if !MEM_USE_POOLS && !MEMP_MEM_MALLOC
- static
- #endif
- const u16_t memp_sizes[MEMP_MAX] = {
- #define LWIP_MEMPOOL(name,num,size,desc) LWIP_MEM_ALIGN_SIZE(size),
- #include "lwip/memp_std.h"
- };
- #if !MEMP_MEM_MALLOC /* don't build if not configured for use in lwipopts.h */
- /** This array holds the number of elements in each pool. */
- static const u16_t memp_num[MEMP_MAX] = {
- #define LWIP_MEMPOOL(name,num,size,desc) (num),
- #include "lwip/memp_std.h"
- };
- /** This array holds a textual description of each pool. */
- #ifdef LWIP_DEBUG
- static const char *memp_desc[MEMP_MAX] = {
- #define LWIP_MEMPOOL(name,num,size,desc) (desc),
- #include "lwip/memp_std.h"
- };
- #endif /* LWIP_DEBUG */
- #if MEMP_SEPARATE_POOLS
- /** This creates each memory pool. These are named memp_memory_XXX_base (where
- * XXX is the name of the pool defined in memp_std.h).
- * To relocate a pool, declare it as extern in cc.h. Example for GCC:
- * extern u8_t __attribute__((section(".onchip_mem"))) memp_memory_UDP_PCB_base[];
- */
- #define LWIP_MEMPOOL(name,num,size,desc) u8_t memp_memory_ ## name ## _base \
- [((num) * (MEMP_SIZE + MEMP_ALIGN_SIZE(size)))];
- #include "lwip/memp_std.h"
- /** This array holds the base of each memory pool. */
- static u8_t *const memp_bases[] = {
- #define LWIP_MEMPOOL(name,num,size,desc) memp_memory_ ## name ## _base,
- #include "lwip/memp_std.h"
- };
- #else /* MEMP_SEPARATE_POOLS */
- /** This is the actual memory used by the pools (all pools in one big block). */
- static u8_t memp_memory[MEM_ALIGNMENT - 1
- #define LWIP_MEMPOOL(name,num,size,desc) + ( (num) * (MEMP_SIZE + MEMP_ALIGN_SIZE(size) ) )
- #include "lwip/memp_std.h"
- ];
- #endif /* MEMP_SEPARATE_POOLS */
- #if MEMP_SANITY_CHECK
- /**
- * Check that memp-lists don't form a circle, using "Floyd's cycle-finding algorithm".
- */
- static int
- memp_sanity(void)
- {
- s16_t i;
- struct memp *t, *h;
- for (i = 0; i < MEMP_MAX; i++) {
- t = memp_tab[i];
- if(t != NULL) {
- for (h = t->next; (t != NULL) && (h != NULL); t = t->next,
- h = (((h->next != NULL) && (h->next->next != NULL)) ? h->next->next : NULL)) {
- if (t == h) {
- return 0;
- }
- }
- }
- }
- return 1;
- }
- #endif /* MEMP_SANITY_CHECK*/
- #if MEMP_OVERFLOW_CHECK
- #if defined(LWIP_DEBUG) && MEMP_STATS
- static const char * memp_overflow_names[] = {
- #define LWIP_MEMPOOL(name,num,size,desc) "/"desc,
- #include "lwip/memp_std.h"
- };
- #endif
- /**
- * Check if a memp element was victim of an overflow
- * (e.g. the restricted area after it has been altered)
- *
- * @param p the memp element to check
- * @param memp_type the pool p comes from
- */
- static void
- memp_overflow_check_element_overflow(struct memp *p, u16_t memp_type)
- {
- u16_t k;
- u8_t *m;
- #if MEMP_SANITY_REGION_AFTER_ALIGNED > 0
- m = (u8_t*)p + MEMP_SIZE + memp_sizes[memp_type];
- for (k = 0; k < MEMP_SANITY_REGION_AFTER_ALIGNED; k++) {
- if (m[k] != 0xcd) {
- char errstr[128] = "detected memp overflow in pool ";
- char digit[] = "0";
- if(memp_type >= 10) {
- digit[0] = '0' + (memp_type/10);
- strcat(errstr, digit);
- }
- digit[0] = '0' + (memp_type%10);
- strcat(errstr, digit);
- #if defined(LWIP_DEBUG) && MEMP_STATS
- strcat(errstr, memp_overflow_names[memp_type]);
- #endif
- LWIP_ASSERT(errstr, 0);
- }
- }
- #endif
- }
- /**
- * Check if a memp element was victim of an underflow
- * (e.g. the restricted area before it has been altered)
- *
- * @param p the memp element to check
- * @param memp_type the pool p comes from
- */
- static void
- memp_overflow_check_element_underflow(struct memp *p, u16_t memp_type)
- {
- u16_t k;
- u8_t *m;
- #if MEMP_SANITY_REGION_BEFORE_ALIGNED > 0
- m = (u8_t*)p + MEMP_SIZE - MEMP_SANITY_REGION_BEFORE_ALIGNED;
- for (k = 0; k < MEMP_SANITY_REGION_BEFORE_ALIGNED; k++) {
- if (m[k] != 0xcd) {
- char errstr[128] = "detected memp underflow in pool ";
- char digit[] = "0";
- if(memp_type >= 10) {
- digit[0] = '0' + (memp_type/10);
- strcat(errstr, digit);
- }
- digit[0] = '0' + (memp_type%10);
- strcat(errstr, digit);
- #if defined(LWIP_DEBUG) && MEMP_STATS
- strcat(errstr, memp_overflow_names[memp_type]);
- #endif
- LWIP_ASSERT(errstr, 0);
- }
- }
- #endif
- }
- /**
- * Do an overflow check for all elements in every pool.
- *
- * @see memp_overflow_check_element for a description of the check
- */
- static void
- memp_overflow_check_all(void)
- {
- u16_t i, j;
- struct memp *p;
- p = (struct memp *)LWIP_MEM_ALIGN(memp_memory);
- for (i = 0; i < MEMP_MAX; ++i) {
- p = p;
- for (j = 0; j < memp_num[i]; ++j) {
- memp_overflow_check_element_overflow(p, i);
- p = (struct memp*)((u8_t*)p + MEMP_SIZE + memp_sizes[i] + MEMP_SANITY_REGION_AFTER_ALIGNED);
- }
- }
- p = (struct memp *)LWIP_MEM_ALIGN(memp_memory);
- for (i = 0; i < MEMP_MAX; ++i) {
- p = p;
- for (j = 0; j < memp_num[i]; ++j) {
- memp_overflow_check_element_underflow(p, i);
- p = (struct memp*)((u8_t*)p + MEMP_SIZE + memp_sizes[i] + MEMP_SANITY_REGION_AFTER_ALIGNED);
- }
- }
- }
- /**
- * Initialize the restricted areas of all memp elements in every pool.
- */
- static void
- memp_overflow_init(void)
- {
- u16_t i, j;
- struct memp *p;
- u8_t *m;
- p = (struct memp *)LWIP_MEM_ALIGN(memp_memory);
- for (i = 0; i < MEMP_MAX; ++i) {
- p = p;
- for (j = 0; j < memp_num[i]; ++j) {
- #if MEMP_SANITY_REGION_BEFORE_ALIGNED > 0
- m = (u8_t*)p + MEMP_SIZE - MEMP_SANITY_REGION_BEFORE_ALIGNED;
- memset(m, 0xcd, MEMP_SANITY_REGION_BEFORE_ALIGNED);
- #endif
- #if MEMP_SANITY_REGION_AFTER_ALIGNED > 0
- m = (u8_t*)p + MEMP_SIZE + memp_sizes[i];
- memset(m, 0xcd, MEMP_SANITY_REGION_AFTER_ALIGNED);
- #endif
- p = (struct memp*)((u8_t*)p + MEMP_SIZE + memp_sizes[i] + MEMP_SANITY_REGION_AFTER_ALIGNED);
- }
- }
- }
- #endif /* MEMP_OVERFLOW_CHECK */
- static void memp_dump(void)
- {
- rt_kprintf("memp_init\n");
-
- rt_kprintf("memp_memory size:%d\n", sizeof(memp_memory));
-
- rt_kprintf("name size num total\n");
- rt_kprintf("%-16.16s: %-5d %-3d %-5d\n", "RAW_PCB",
- sizeof(struct raw_pcb), MEMP_NUM_RAW_PCB,
- sizeof(struct raw_pcb) * MEMP_NUM_RAW_PCB);
- #if LWIP_UDP
- rt_kprintf("%-16.16s: %-5d %-3d %-5d\n", "UDP_PCB",
- sizeof(struct udp_pcb), MEMP_NUM_UDP_PCB,
- sizeof(struct udp_pcb) * MEMP_NUM_UDP_PCB);
- #else
- rt_kprintf("LWIP_UDP disable\n");
- #endif /* LWIP_UDP */
- #if LWIP_TCP
- rt_kprintf("%-16.16s: %-5d %-3d %-5d\n", "TCP_PCB",
- sizeof(struct tcp_pcb), MEMP_NUM_TCP_PCB,
- sizeof(struct tcp_pcb) * MEMP_NUM_TCP_PCB);
- rt_kprintf("%-16.16s: %-5d %-3d %-5d\n", "TCP_PCB_LISTEN",
- sizeof(struct tcp_pcb_listen), MEMP_NUM_TCP_PCB_LISTEN,
- sizeof(struct tcp_pcb_listen) * MEMP_NUM_TCP_PCB_LISTEN);
- rt_kprintf("%-16.16s: %-5d %-3d %-5d\n", "TCP_SEG",
- sizeof(struct tcp_seg), MEMP_NUM_TCP_SEG,
- sizeof(struct tcp_seg) * MEMP_NUM_TCP_SEG);
- #else
- rt_kprintf("LWIP_TCP disable\n");
- #endif /* LWIP_TCP */
- //重新组装
- #if IP_REASSEMBLY
- rt_kprintf("%-16.16s: %-5d %-3d %-5d\n", "REASSDATA",
- sizeof(struct ip_reassdata), MEMP_NUM_REASSDATA,
- sizeof(struct ip_reassdata) * MEMP_NUM_REASSDATA);
- #else
- rt_kprintf("IP_REASSEMBLY disable\n");
- #endif /* IP_REASSEMBLY */
- //分片
- #if IP_FRAG && !IP_FRAG_USES_STATIC_BUF && !LWIP_NETIF_TX_SINGLE_PBUF
- rt_kprintf("%-16.16s: %-5d %-3d %-5d\n", "FRAG_PBUF",
- sizeof(struct pbuf_custom_ref), MEMP_NUM_FRAG_PBUF,
- sizeof(struct pbuf_custom_ref) * MEMP_NUM_FRAG_PBUF);
- #else
- rt_kprintf("IP_FRAG disable\n");
- #endif /* IP_FRAG && !IP_FRAG_USES_STATIC_BUF && !LWIP_NETIF_TX_SINGLE_PBUF */
- #if LWIP_NETCONN
- rt_kprintf("%-16.16s: %-5d %-3d %-5d\n", "NETBUF",
- sizeof(struct netbuf), MEMP_NUM_NETBUF,
- sizeof(struct netbuf) * MEMP_NUM_NETBUF);
- rt_kprintf("%-16.16s: %-5d %-3d %-5d\n", "NETCONN",
- sizeof(struct netconn), MEMP_NUM_NETCONN,
- sizeof(struct netconn) * MEMP_NUM_NETCONN);
- #else
- rt_kprintf("LWIP_NETCONN disable\n");
- #endif /* LWIP_NETCONN */
- rt_kprintf("%-16.16s: %-5d %-3d %-5d\n", "TCPIP_MSG_API",
- sizeof(struct tcpip_msg), MEMP_NUM_TCPIP_MSG_API,
- sizeof(struct tcpip_msg) * MEMP_NUM_TCPIP_MSG_API);
- rt_kprintf("%-16.16s: %-5d %-3d %-5d\n", "TCPIP_MSG_INPKT",
- sizeof(struct tcpip_msg), MEMP_NUM_TCPIP_MSG_INPKT,
- sizeof(struct tcpip_msg) * MEMP_NUM_TCPIP_MSG_INPKT);
- #if LWIP_ARP && ARP_QUEUEING
- rt_kprintf("%-16.16s: %-5d %-3d %-5d\n", "ARP_QUEUE",
- sizeof(struct etharp_q_entry), MEMP_NUM_ARP_QUEUE,
- sizeof(struct etharp_q_entry) * MEMP_NUM_ARP_QUEUE);
- #else
- rt_kprintf("LWIP_ARP disable\n");
- #endif /* LWIP_ARP && ARP_QUEUEING */
- #if LWIP_IGMP
- rt_kprintf("%-16.16s: %-5d %-3d %-5d\n", "IGMP_GROUP",
- sizeof(struct igmp_group), MEMP_NUM_IGMP_GROUP,
- sizeof(struct igmp_group) * MEMP_NUM_IGMP_GROUP);
- #else
- rt_kprintf("LWIP_IGMP disable\n");
- #endif /* LWIP_IGMP */
- rt_kprintf("%-16.16s: %-5d %-3d %-5d\n", "SYS_TIMEOUT",
- sizeof(struct sys_timeo), MEMP_NUM_SYS_TIMEOUT,
- sizeof(struct sys_timeo) * MEMP_NUM_SYS_TIMEOUT);
- #if LWIP_SNMP
- rt_kprintf("%-16.16s: %-5d %-3d %-5d\n", "SNMP_ROOTNODE",
- sizeof(struct mib_list_rootnode), MEMP_NUM_SNMP_ROOTNODE,
- sizeof(struct mib_list_rootnode) * MEMP_NUM_SNMP_ROOTNODE);
-
- rt_kprintf("%-16.16s: %-5d %-3d %-5d\n", "SNMP_NODE",
- sizeof(struct mib_list_node), MEMP_NUM_SNMP_NODE,
- sizeof(struct mib_list_node) * MEMP_NUM_SNMP_NODE);
-
- rt_kprintf("%-16.16s: %-5d %-3d %-5d\n", "SNMP_VARBIND",
- sizeof(struct snmp_varbind), MEMP_NUM_SNMP_VARBIND,
- sizeof(struct snmp_varbind) * MEMP_NUM_SNMP_VARBIND);
-
- rt_kprintf("%-16.16s: %-5d %-3d %-5d\n", "SNMP_VALUE",
- SNMP_MAX_VALUE_SIZE, MEMP_NUM_SNMP_VALUE,
- SNMP_MAX_VALUE_SIZE * MEMP_NUM_SNMP_VALUE);
- #else
- rt_kprintf("LWIP_SNMP disable\n");
- #endif /* LWIP_SNMP */
- #if LWIP_DNS && LWIP_SOCKET
- rt_kprintf("%-16.16s: %-5d %-3d %-5d\n", "NETDB",
- NETDB_ELEM_SIZE, MEMP_NUM_NETDB,
- NETDB_ELEM_SIZE * MEMP_NUM_NETDB);
- #else
- rt_kprintf("LWIP_DNS LWIP_SOCKET disable\n");
- #endif /* LWIP_DNS LWIP_SOCKET */
- #if LWIP_DNS && DNS_LOCAL_HOSTLIST && DNS_LOCAL_HOSTLIST_IS_DYNAMIC
- rt_kprintf("%-16.16s: %-5d %-3d %-5d\n", "LOCALHOSTLIST",
- LOCALHOSTLIST_ELEM_SIZE, MEMP_NUM_LOCALHOSTLIST,
- LOCALHOSTLIST_ELEM_SIZE * MEMP_NUM_LOCALHOSTLIST);
- #else
- rt_kprintf("DNS_LOCAL_HOSTLIST disable\n");
- #endif /* DNS_LOCAL_HOSTLIST */
- #if PPPOE_SUPPORT
- rt_kprintf("%-16.16s: %-5d %-3d %-5d\n", "PPPOE_IF",
- sizeof(struct pppoe_softc), MEMP_NUM_PPPOE_INTERFACES,
- sizeof(struct pppoe_softc) * MEMP_NUM_PPPOE_INTERFACES);
- #else
- rt_kprintf("PPPOE_SUPPORT disable\n");
- #endif /* PPPOE_SUPPORT */
- rt_kprintf("%-16.16s: %-5d %-3d %-5d\n", "PBUF_POOL",
- PBUF_POOL_BUFSIZE, PBUF_POOL_SIZE,
- PBUF_POOL_BUFSIZE * PBUF_POOL_SIZE);
- }
- /**
- * Initialize this module.
- *
- * Carves out memp_memory into linked lists for each pool-type.
- */
- void
- memp_init(void)
- {
- struct memp *memp;
- u16_t i, j;
- memp_dump();
- for (i = 0; i < MEMP_MAX; ++i) {
- MEMP_STATS_AVAIL(used, i, 0);
- MEMP_STATS_AVAIL(max, i, 0);
- MEMP_STATS_AVAIL(err, i, 0);
- MEMP_STATS_AVAIL(avail, i, memp_num[i]);
- }
- #if !MEMP_SEPARATE_POOLS
- memp = (struct memp *)LWIP_MEM_ALIGN(memp_memory);
- #endif /* !MEMP_SEPARATE_POOLS */
- /* for every pool: */
- for (i = 0; i < MEMP_MAX; ++i) {
- memp_tab[i] = NULL;
- #if MEMP_SEPARATE_POOLS
- memp = (struct memp*)memp_bases[i];
- #endif /* MEMP_SEPARATE_POOLS */
- /* create a linked list of memp elements */
- for (j = 0; j < memp_num[i]; ++j) {
- memp->next = memp_tab[i];
- memp_tab[i] = memp;
- memp = (struct memp *)(void *)((u8_t *)memp + MEMP_SIZE + memp_sizes[i]
- #if MEMP_OVERFLOW_CHECK
- + MEMP_SANITY_REGION_AFTER_ALIGNED
- #endif
- );
- }
- }
- #if MEMP_OVERFLOW_CHECK
- memp_overflow_init();
- /* check everything a first time to see if it worked */
- memp_overflow_check_all();
- #endif /* MEMP_OVERFLOW_CHECK */
- }
- /**
- * Get an element from a specific pool.
- *
- * @param type the pool to get an element from
- *
- * the debug version has two more parameters:
- * @param file file name calling this function
- * @param line number of line where this function is called
- *
- * @return a pointer to the allocated memory or a NULL pointer on error
- */
- void *
- #if !MEMP_OVERFLOW_CHECK
- memp_malloc(memp_t type)
- #else
- memp_malloc_fn(memp_t type, const char* file, const int line)
- #endif
- {
- struct memp *memp;
- SYS_ARCH_DECL_PROTECT(old_level);
- LWIP_ERROR("memp_malloc: type < MEMP_MAX", (type < MEMP_MAX), return NULL;);
- SYS_ARCH_PROTECT(old_level);
- #if MEMP_OVERFLOW_CHECK >= 2
- memp_overflow_check_all();
- #endif /* MEMP_OVERFLOW_CHECK >= 2 */
- memp = memp_tab[type];
- if (memp != NULL) {
- memp_tab[type] = memp->next;
- #if MEMP_OVERFLOW_CHECK
- memp->next = NULL;
- memp->file = file;
- memp->line = line;
- #endif /* MEMP_OVERFLOW_CHECK */
- MEMP_STATS_INC_USED(used, type);
- LWIP_ASSERT("memp_malloc: memp properly aligned",
- ((mem_ptr_t)memp % MEM_ALIGNMENT) == 0);
- memp = (struct memp*)(void *)((u8_t*)memp + MEMP_SIZE);
- } else {
- LWIP_DEBUGF(MEMP_DEBUG | LWIP_DBG_LEVEL_SERIOUS, ("memp_malloc: out of memory in pool %s\n", memp_desc[type]));
- MEMP_STATS_INC(err, type);
- }
- SYS_ARCH_UNPROTECT(old_level);
- return memp;
- }
- /**
- * Put an element back into its pool.
- *
- * @param type the pool where to put mem
- * @param mem the memp element to free
- */
- void
- memp_free(memp_t type, void *mem)
- {
- struct memp *memp;
- SYS_ARCH_DECL_PROTECT(old_level);
- if (mem == NULL) {
- return;
- }
- LWIP_ASSERT("memp_free: mem properly aligned",
- ((mem_ptr_t)mem % MEM_ALIGNMENT) == 0);
- memp = (struct memp *)(void *)((u8_t*)mem - MEMP_SIZE);
- SYS_ARCH_PROTECT(old_level);
- #if MEMP_OVERFLOW_CHECK
- #if MEMP_OVERFLOW_CHECK >= 2
- memp_overflow_check_all();
- #else
- memp_overflow_check_element_overflow(memp, type);
- memp_overflow_check_element_underflow(memp, type);
- #endif /* MEMP_OVERFLOW_CHECK >= 2 */
- #endif /* MEMP_OVERFLOW_CHECK */
- MEMP_STATS_DEC(used, type);
- memp->next = memp_tab[type];
- memp_tab[type] = memp;
- #if MEMP_SANITY_CHECK
- LWIP_ASSERT("memp sanity", memp_sanity());
- #endif /* MEMP_SANITY_CHECK */
- SYS_ARCH_UNPROTECT(old_level);
- }
- #endif /* MEMP_MEM_MALLOC */
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