Nino Der Kinderen / Mbed 2 deprecated InetTest

Embedded C project:18/12/2014

Dependencies:   DS1307 TextLCD mbed

NetServices/lwip/core/timers.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 * Stack-internal timers implementation.
ninoderkinderen 0:8d87bc453349 4 * This file includes timer callbacks for stack-internal timers as well as
ninoderkinderen 0:8d87bc453349 5 * functions to set up or stop timers and check for expired timers.
ninoderkinderen 0:8d87bc453349 6 *
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 * Simon Goldschmidt
ninoderkinderen 0:8d87bc453349 39 *
ninoderkinderen 0:8d87bc453349 40 */
ninoderkinderen 0:8d87bc453349 41
ninoderkinderen 0:8d87bc453349 42 #include "lwip/opt.h"
ninoderkinderen 0:8d87bc453349 43
ninoderkinderen 0:8d87bc453349 44 #include "lwip/timers.h"
ninoderkinderen 0:8d87bc453349 45
ninoderkinderen 0:8d87bc453349 46 #if LWIP_TIMERS
ninoderkinderen 0:8d87bc453349 47
ninoderkinderen 0:8d87bc453349 48 #include "lwip/def.h"
ninoderkinderen 0:8d87bc453349 49 #include "lwip/memp.h"
ninoderkinderen 0:8d87bc453349 50 #include "lwip/tcpip.h"
ninoderkinderen 0:8d87bc453349 51
ninoderkinderen 0:8d87bc453349 52 #include "lwip/tcp_impl.h"
ninoderkinderen 0:8d87bc453349 53 #include "lwip/ip_frag.h"
ninoderkinderen 0:8d87bc453349 54 #include "netif/etharp.h"
ninoderkinderen 0:8d87bc453349 55 #include "lwip/dhcp.h"
ninoderkinderen 0:8d87bc453349 56 #include "lwip/autoip.h"
ninoderkinderen 0:8d87bc453349 57 #include "lwip/igmp.h"
ninoderkinderen 0:8d87bc453349 58 #include "lwip/dns.h"
ninoderkinderen 0:8d87bc453349 59
ninoderkinderen 0:8d87bc453349 60
ninoderkinderen 0:8d87bc453349 61 /** The one and only timeout list */
ninoderkinderen 0:8d87bc453349 62 static struct sys_timeo *next_timeout;
ninoderkinderen 0:8d87bc453349 63 #if NO_SYS
ninoderkinderen 0:8d87bc453349 64 static u32_t timeouts_last_time;
ninoderkinderen 0:8d87bc453349 65 #endif /* NO_SYS */
ninoderkinderen 0:8d87bc453349 66
ninoderkinderen 0:8d87bc453349 67 #if LWIP_TCP
ninoderkinderen 0:8d87bc453349 68 /** global variable that shows if the tcp timer is currently scheduled or not */
ninoderkinderen 0:8d87bc453349 69 static int tcpip_tcp_timer_active;
ninoderkinderen 0:8d87bc453349 70
ninoderkinderen 0:8d87bc453349 71 /**
ninoderkinderen 0:8d87bc453349 72 * Timer callback function that calls tcp_tmr() and reschedules itself.
ninoderkinderen 0:8d87bc453349 73 *
ninoderkinderen 0:8d87bc453349 74 * @param arg unused argument
ninoderkinderen 0:8d87bc453349 75 */
ninoderkinderen 0:8d87bc453349 76 static void
ninoderkinderen 0:8d87bc453349 77 tcpip_tcp_timer(void *arg)
ninoderkinderen 0:8d87bc453349 78 {
ninoderkinderen 0:8d87bc453349 79 LWIP_UNUSED_ARG(arg);
ninoderkinderen 0:8d87bc453349 80
ninoderkinderen 0:8d87bc453349 81 /* call TCP timer handler */
ninoderkinderen 0:8d87bc453349 82 tcp_tmr();
ninoderkinderen 0:8d87bc453349 83 /* timer still needed? */
ninoderkinderen 0:8d87bc453349 84 if (tcp_active_pcbs || tcp_tw_pcbs) {
ninoderkinderen 0:8d87bc453349 85 /* restart timer */
ninoderkinderen 0:8d87bc453349 86 sys_timeout(TCP_TMR_INTERVAL, tcpip_tcp_timer, NULL);
ninoderkinderen 0:8d87bc453349 87 } else {
ninoderkinderen 0:8d87bc453349 88 /* disable timer */
ninoderkinderen 0:8d87bc453349 89 tcpip_tcp_timer_active = 0;
ninoderkinderen 0:8d87bc453349 90 }
ninoderkinderen 0:8d87bc453349 91 }
ninoderkinderen 0:8d87bc453349 92
ninoderkinderen 0:8d87bc453349 93 /**
ninoderkinderen 0:8d87bc453349 94 * Called from TCP_REG when registering a new PCB:
ninoderkinderen 0:8d87bc453349 95 * the reason is to have the TCP timer only running when
ninoderkinderen 0:8d87bc453349 96 * there are active (or time-wait) PCBs.
ninoderkinderen 0:8d87bc453349 97 */
ninoderkinderen 0:8d87bc453349 98 void
ninoderkinderen 0:8d87bc453349 99 tcp_timer_needed(void)
ninoderkinderen 0:8d87bc453349 100 {
ninoderkinderen 0:8d87bc453349 101 /* timer is off but needed again? */
ninoderkinderen 0:8d87bc453349 102 if (!tcpip_tcp_timer_active && (tcp_active_pcbs || tcp_tw_pcbs)) {
ninoderkinderen 0:8d87bc453349 103 /* enable and start timer */
ninoderkinderen 0:8d87bc453349 104 tcpip_tcp_timer_active = 1;
ninoderkinderen 0:8d87bc453349 105 sys_timeout(TCP_TMR_INTERVAL, tcpip_tcp_timer, NULL);
ninoderkinderen 0:8d87bc453349 106 }
ninoderkinderen 0:8d87bc453349 107 }
ninoderkinderen 0:8d87bc453349 108 #endif /* LWIP_TCP */
ninoderkinderen 0:8d87bc453349 109
ninoderkinderen 0:8d87bc453349 110 #if IP_REASSEMBLY
ninoderkinderen 0:8d87bc453349 111 /**
ninoderkinderen 0:8d87bc453349 112 * Timer callback function that calls ip_reass_tmr() and reschedules itself.
ninoderkinderen 0:8d87bc453349 113 *
ninoderkinderen 0:8d87bc453349 114 * @param arg unused argument
ninoderkinderen 0:8d87bc453349 115 */
ninoderkinderen 0:8d87bc453349 116 static void
ninoderkinderen 0:8d87bc453349 117 ip_reass_timer(void *arg)
ninoderkinderen 0:8d87bc453349 118 {
ninoderkinderen 0:8d87bc453349 119 LWIP_UNUSED_ARG(arg);
ninoderkinderen 0:8d87bc453349 120 LWIP_DEBUGF(TIMERS_DEBUG, ("tcpip: ip_reass_tmr()\n"));
ninoderkinderen 0:8d87bc453349 121 ip_reass_tmr();
ninoderkinderen 0:8d87bc453349 122 sys_timeout(IP_TMR_INTERVAL, ip_reass_timer, NULL);
ninoderkinderen 0:8d87bc453349 123 }
ninoderkinderen 0:8d87bc453349 124 #endif /* IP_REASSEMBLY */
ninoderkinderen 0:8d87bc453349 125
ninoderkinderen 0:8d87bc453349 126 #if LWIP_ARP
ninoderkinderen 0:8d87bc453349 127 /**
ninoderkinderen 0:8d87bc453349 128 * Timer callback function that calls etharp_tmr() and reschedules itself.
ninoderkinderen 0:8d87bc453349 129 *
ninoderkinderen 0:8d87bc453349 130 * @param arg unused argument
ninoderkinderen 0:8d87bc453349 131 */
ninoderkinderen 0:8d87bc453349 132 static void
ninoderkinderen 0:8d87bc453349 133 arp_timer(void *arg)
ninoderkinderen 0:8d87bc453349 134 {
ninoderkinderen 0:8d87bc453349 135 LWIP_UNUSED_ARG(arg);
ninoderkinderen 0:8d87bc453349 136 LWIP_DEBUGF(TIMERS_DEBUG, ("tcpip: etharp_tmr()\n"));
ninoderkinderen 0:8d87bc453349 137 etharp_tmr();
ninoderkinderen 0:8d87bc453349 138 sys_timeout(ARP_TMR_INTERVAL, arp_timer, NULL);
ninoderkinderen 0:8d87bc453349 139 }
ninoderkinderen 0:8d87bc453349 140 #endif /* LWIP_ARP */
ninoderkinderen 0:8d87bc453349 141
ninoderkinderen 0:8d87bc453349 142 #if LWIP_DHCP
ninoderkinderen 0:8d87bc453349 143 /**
ninoderkinderen 0:8d87bc453349 144 * Timer callback function that calls dhcp_coarse_tmr() and reschedules itself.
ninoderkinderen 0:8d87bc453349 145 *
ninoderkinderen 0:8d87bc453349 146 * @param arg unused argument
ninoderkinderen 0:8d87bc453349 147 */
ninoderkinderen 0:8d87bc453349 148 static void
ninoderkinderen 0:8d87bc453349 149 dhcp_timer_coarse(void *arg)
ninoderkinderen 0:8d87bc453349 150 {
ninoderkinderen 0:8d87bc453349 151 LWIP_UNUSED_ARG(arg);
ninoderkinderen 0:8d87bc453349 152 LWIP_DEBUGF(TIMERS_DEBUG, ("tcpip: dhcp_coarse_tmr()\n"));
ninoderkinderen 0:8d87bc453349 153 dhcp_coarse_tmr();
ninoderkinderen 0:8d87bc453349 154 sys_timeout(DHCP_COARSE_TIMER_MSECS, dhcp_timer_coarse, NULL);
ninoderkinderen 0:8d87bc453349 155 }
ninoderkinderen 0:8d87bc453349 156
ninoderkinderen 0:8d87bc453349 157 /**
ninoderkinderen 0:8d87bc453349 158 * Timer callback function that calls dhcp_fine_tmr() and reschedules itself.
ninoderkinderen 0:8d87bc453349 159 *
ninoderkinderen 0:8d87bc453349 160 * @param arg unused argument
ninoderkinderen 0:8d87bc453349 161 */
ninoderkinderen 0:8d87bc453349 162 static void
ninoderkinderen 0:8d87bc453349 163 dhcp_timer_fine(void *arg)
ninoderkinderen 0:8d87bc453349 164 {
ninoderkinderen 0:8d87bc453349 165 LWIP_UNUSED_ARG(arg);
ninoderkinderen 0:8d87bc453349 166 LWIP_DEBUGF(TIMERS_DEBUG, ("tcpip: dhcp_fine_tmr()\n"));
ninoderkinderen 0:8d87bc453349 167 dhcp_fine_tmr();
ninoderkinderen 0:8d87bc453349 168 sys_timeout(DHCP_FINE_TIMER_MSECS, dhcp_timer_fine, NULL);
ninoderkinderen 0:8d87bc453349 169 }
ninoderkinderen 0:8d87bc453349 170 #endif /* LWIP_DHCP */
ninoderkinderen 0:8d87bc453349 171
ninoderkinderen 0:8d87bc453349 172 #if LWIP_AUTOIP
ninoderkinderen 0:8d87bc453349 173 /**
ninoderkinderen 0:8d87bc453349 174 * Timer callback function that calls autoip_tmr() and reschedules itself.
ninoderkinderen 0:8d87bc453349 175 *
ninoderkinderen 0:8d87bc453349 176 * @param arg unused argument
ninoderkinderen 0:8d87bc453349 177 */
ninoderkinderen 0:8d87bc453349 178 static void
ninoderkinderen 0:8d87bc453349 179 autoip_timer(void *arg)
ninoderkinderen 0:8d87bc453349 180 {
ninoderkinderen 0:8d87bc453349 181 LWIP_UNUSED_ARG(arg);
ninoderkinderen 0:8d87bc453349 182 LWIP_DEBUGF(TIMERS_DEBUG, ("tcpip: autoip_tmr()\n"));
ninoderkinderen 0:8d87bc453349 183 autoip_tmr();
ninoderkinderen 0:8d87bc453349 184 sys_timeout(AUTOIP_TMR_INTERVAL, autoip_timer, NULL);
ninoderkinderen 0:8d87bc453349 185 }
ninoderkinderen 0:8d87bc453349 186 #endif /* LWIP_AUTOIP */
ninoderkinderen 0:8d87bc453349 187
ninoderkinderen 0:8d87bc453349 188 #if LWIP_IGMP
ninoderkinderen 0:8d87bc453349 189 /**
ninoderkinderen 0:8d87bc453349 190 * Timer callback function that calls igmp_tmr() and reschedules itself.
ninoderkinderen 0:8d87bc453349 191 *
ninoderkinderen 0:8d87bc453349 192 * @param arg unused argument
ninoderkinderen 0:8d87bc453349 193 */
ninoderkinderen 0:8d87bc453349 194 static void
ninoderkinderen 0:8d87bc453349 195 igmp_timer(void *arg)
ninoderkinderen 0:8d87bc453349 196 {
ninoderkinderen 0:8d87bc453349 197 LWIP_UNUSED_ARG(arg);
ninoderkinderen 0:8d87bc453349 198 LWIP_DEBUGF(TIMERS_DEBUG, ("tcpip: igmp_tmr()\n"));
ninoderkinderen 0:8d87bc453349 199 igmp_tmr();
ninoderkinderen 0:8d87bc453349 200 sys_timeout(IGMP_TMR_INTERVAL, igmp_timer, NULL);
ninoderkinderen 0:8d87bc453349 201 }
ninoderkinderen 0:8d87bc453349 202 #endif /* LWIP_IGMP */
ninoderkinderen 0:8d87bc453349 203
ninoderkinderen 0:8d87bc453349 204 #if LWIP_DNS
ninoderkinderen 0:8d87bc453349 205 /**
ninoderkinderen 0:8d87bc453349 206 * Timer callback function that calls dns_tmr() and reschedules itself.
ninoderkinderen 0:8d87bc453349 207 *
ninoderkinderen 0:8d87bc453349 208 * @param arg unused argument
ninoderkinderen 0:8d87bc453349 209 */
ninoderkinderen 0:8d87bc453349 210 static void
ninoderkinderen 0:8d87bc453349 211 dns_timer(void *arg)
ninoderkinderen 0:8d87bc453349 212 {
ninoderkinderen 0:8d87bc453349 213 LWIP_UNUSED_ARG(arg);
ninoderkinderen 0:8d87bc453349 214 LWIP_DEBUGF(TIMERS_DEBUG, ("tcpip: dns_tmr()\n"));
ninoderkinderen 0:8d87bc453349 215 dns_tmr();
ninoderkinderen 0:8d87bc453349 216 sys_timeout(DNS_TMR_INTERVAL, dns_timer, NULL);
ninoderkinderen 0:8d87bc453349 217 }
ninoderkinderen 0:8d87bc453349 218 #endif /* LWIP_DNS */
ninoderkinderen 0:8d87bc453349 219
ninoderkinderen 0:8d87bc453349 220 /** Initialize this module */
ninoderkinderen 0:8d87bc453349 221 void sys_timeouts_init(void)
ninoderkinderen 0:8d87bc453349 222 {
ninoderkinderen 0:8d87bc453349 223 next_timeout = NULL;
ninoderkinderen 0:8d87bc453349 224 #if IP_REASSEMBLY
ninoderkinderen 0:8d87bc453349 225 sys_timeout(IP_TMR_INTERVAL, ip_reass_timer, NULL);
ninoderkinderen 0:8d87bc453349 226 #endif /* IP_REASSEMBLY */
ninoderkinderen 0:8d87bc453349 227 #if LWIP_ARP
ninoderkinderen 0:8d87bc453349 228 sys_timeout(ARP_TMR_INTERVAL, arp_timer, NULL);
ninoderkinderen 0:8d87bc453349 229 #endif /* LWIP_ARP */
ninoderkinderen 0:8d87bc453349 230 #if LWIP_DHCP
ninoderkinderen 0:8d87bc453349 231 sys_timeout(DHCP_COARSE_TIMER_MSECS, dhcp_timer_coarse, NULL);
ninoderkinderen 0:8d87bc453349 232 sys_timeout(DHCP_FINE_TIMER_MSECS, dhcp_timer_fine, NULL);
ninoderkinderen 0:8d87bc453349 233 #endif /* LWIP_DHCP */
ninoderkinderen 0:8d87bc453349 234 #if LWIP_AUTOIP
ninoderkinderen 0:8d87bc453349 235 sys_timeout(AUTOIP_TMR_INTERVAL, autoip_timer, NULL);
ninoderkinderen 0:8d87bc453349 236 #endif /* LWIP_AUTOIP */
ninoderkinderen 0:8d87bc453349 237 #if LWIP_IGMP
ninoderkinderen 0:8d87bc453349 238 sys_timeout(IGMP_TMR_INTERVAL, igmp_timer, NULL);
ninoderkinderen 0:8d87bc453349 239 #endif /* LWIP_IGMP */
ninoderkinderen 0:8d87bc453349 240 #if LWIP_DNS
ninoderkinderen 0:8d87bc453349 241 sys_timeout(DNS_TMR_INTERVAL, dns_timer, NULL);
ninoderkinderen 0:8d87bc453349 242 #endif /* LWIP_DNS */
ninoderkinderen 0:8d87bc453349 243
ninoderkinderen 0:8d87bc453349 244 #if NO_SYS
ninoderkinderen 0:8d87bc453349 245 /* Initialise timestamp for sys_check_timeouts */
ninoderkinderen 0:8d87bc453349 246 timeouts_last_time = sys_now();
ninoderkinderen 0:8d87bc453349 247 #endif
ninoderkinderen 0:8d87bc453349 248 }
ninoderkinderen 0:8d87bc453349 249
ninoderkinderen 0:8d87bc453349 250 /**
ninoderkinderen 0:8d87bc453349 251 * Create a one-shot timer (aka timeout). Timeouts are processed in the
ninoderkinderen 0:8d87bc453349 252 * following cases:
ninoderkinderen 0:8d87bc453349 253 * - while waiting for a message using sys_timeouts_mbox_fetch()
ninoderkinderen 0:8d87bc453349 254 * - by calling sys_check_timeouts() (NO_SYS==1 only)
ninoderkinderen 0:8d87bc453349 255 *
ninoderkinderen 0:8d87bc453349 256 * @param msecs time in milliseconds after that the timer should expire
ninoderkinderen 0:8d87bc453349 257 * @param handler callback function to call when msecs have elapsed
ninoderkinderen 0:8d87bc453349 258 * @param arg argument to pass to the callback function
ninoderkinderen 0:8d87bc453349 259 */
ninoderkinderen 0:8d87bc453349 260 #if LWIP_DEBUG_TIMERNAMES
ninoderkinderen 0:8d87bc453349 261 void
ninoderkinderen 0:8d87bc453349 262 sys_timeout_debug(u32_t msecs, sys_timeout_handler handler, void *arg, const char* handler_name)
ninoderkinderen 0:8d87bc453349 263 #else /* LWIP_DEBUG_TIMERNAMES */
ninoderkinderen 0:8d87bc453349 264 void
ninoderkinderen 0:8d87bc453349 265 sys_timeout(u32_t msecs, sys_timeout_handler handler, void *arg)
ninoderkinderen 0:8d87bc453349 266 #endif /* LWIP_DEBUG_TIMERNAMES */
ninoderkinderen 0:8d87bc453349 267 {
ninoderkinderen 0:8d87bc453349 268 struct sys_timeo *timeout, *t;
ninoderkinderen 0:8d87bc453349 269
ninoderkinderen 0:8d87bc453349 270 timeout = (struct sys_timeo *)memp_malloc(MEMP_SYS_TIMEOUT);
ninoderkinderen 0:8d87bc453349 271 if (timeout == NULL) {
ninoderkinderen 0:8d87bc453349 272 LWIP_ASSERT("sys_timeout: timeout != NULL, pool MEMP_SYS_TIMEOUT is empty", timeout != NULL);
ninoderkinderen 0:8d87bc453349 273 return;
ninoderkinderen 0:8d87bc453349 274 }
ninoderkinderen 0:8d87bc453349 275 timeout->next = NULL;
ninoderkinderen 0:8d87bc453349 276 timeout->h = handler;
ninoderkinderen 0:8d87bc453349 277 timeout->arg = arg;
ninoderkinderen 0:8d87bc453349 278 timeout->time = msecs;
ninoderkinderen 0:8d87bc453349 279 #if LWIP_DEBUG_TIMERNAMES
ninoderkinderen 0:8d87bc453349 280 timeout->handler_name = handler_name;
ninoderkinderen 0:8d87bc453349 281 LWIP_DEBUGF(TIMERS_DEBUG, ("sys_timeout: %p msecs=%"U32_F" handler=%s arg=%p\n",
ninoderkinderen 0:8d87bc453349 282 (void *)timeout, msecs, handler_name, (void *)arg));
ninoderkinderen 0:8d87bc453349 283 #endif /* LWIP_DEBUG_TIMERNAMES */
ninoderkinderen 0:8d87bc453349 284
ninoderkinderen 0:8d87bc453349 285 if (next_timeout == NULL) {
ninoderkinderen 0:8d87bc453349 286 next_timeout = timeout;
ninoderkinderen 0:8d87bc453349 287 return;
ninoderkinderen 0:8d87bc453349 288 }
ninoderkinderen 0:8d87bc453349 289
ninoderkinderen 0:8d87bc453349 290 if (next_timeout->time > msecs) {
ninoderkinderen 0:8d87bc453349 291 next_timeout->time -= msecs;
ninoderkinderen 0:8d87bc453349 292 timeout->next = next_timeout;
ninoderkinderen 0:8d87bc453349 293 next_timeout = timeout;
ninoderkinderen 0:8d87bc453349 294 } else {
ninoderkinderen 0:8d87bc453349 295 for(t = next_timeout; t != NULL; t = t->next) {
ninoderkinderen 0:8d87bc453349 296 timeout->time -= t->time;
ninoderkinderen 0:8d87bc453349 297 if (t->next == NULL || t->next->time > timeout->time) {
ninoderkinderen 0:8d87bc453349 298 if (t->next != NULL) {
ninoderkinderen 0:8d87bc453349 299 t->next->time -= timeout->time;
ninoderkinderen 0:8d87bc453349 300 }
ninoderkinderen 0:8d87bc453349 301 timeout->next = t->next;
ninoderkinderen 0:8d87bc453349 302 t->next = timeout;
ninoderkinderen 0:8d87bc453349 303 break;
ninoderkinderen 0:8d87bc453349 304 }
ninoderkinderen 0:8d87bc453349 305 }
ninoderkinderen 0:8d87bc453349 306 }
ninoderkinderen 0:8d87bc453349 307 }
ninoderkinderen 0:8d87bc453349 308
ninoderkinderen 0:8d87bc453349 309 /**
ninoderkinderen 0:8d87bc453349 310 * Go through timeout list (for this task only) and remove the first matching
ninoderkinderen 0:8d87bc453349 311 * entry, even though the timeout has not triggered yet.
ninoderkinderen 0:8d87bc453349 312 *
ninoderkinderen 0:8d87bc453349 313 * @note This function only works as expected if there is only one timeout
ninoderkinderen 0:8d87bc453349 314 * calling 'handler' in the list of timeouts.
ninoderkinderen 0:8d87bc453349 315 *
ninoderkinderen 0:8d87bc453349 316 * @param handler callback function that would be called by the timeout
ninoderkinderen 0:8d87bc453349 317 * @param arg callback argument that would be passed to handler
ninoderkinderen 0:8d87bc453349 318 */
ninoderkinderen 0:8d87bc453349 319 void
ninoderkinderen 0:8d87bc453349 320 sys_untimeout(sys_timeout_handler handler, void *arg)
ninoderkinderen 0:8d87bc453349 321 {
ninoderkinderen 0:8d87bc453349 322 struct sys_timeo *prev_t, *t;
ninoderkinderen 0:8d87bc453349 323
ninoderkinderen 0:8d87bc453349 324 if (next_timeout == NULL) {
ninoderkinderen 0:8d87bc453349 325 return;
ninoderkinderen 0:8d87bc453349 326 }
ninoderkinderen 0:8d87bc453349 327
ninoderkinderen 0:8d87bc453349 328 for (t = next_timeout, prev_t = NULL; t != NULL; prev_t = t, t = t->next) {
ninoderkinderen 0:8d87bc453349 329 if ((t->h == handler) && (t->arg == arg)) {
ninoderkinderen 0:8d87bc453349 330 /* We have a match */
ninoderkinderen 0:8d87bc453349 331 /* Unlink from previous in list */
ninoderkinderen 0:8d87bc453349 332 if (prev_t == NULL) {
ninoderkinderen 0:8d87bc453349 333 next_timeout = t->next;
ninoderkinderen 0:8d87bc453349 334 } else {
ninoderkinderen 0:8d87bc453349 335 prev_t->next = t->next;
ninoderkinderen 0:8d87bc453349 336 }
ninoderkinderen 0:8d87bc453349 337 /* If not the last one, add time of this one back to next */
ninoderkinderen 0:8d87bc453349 338 if (t->next != NULL) {
ninoderkinderen 0:8d87bc453349 339 t->next->time += t->time;
ninoderkinderen 0:8d87bc453349 340 }
ninoderkinderen 0:8d87bc453349 341 memp_free(MEMP_SYS_TIMEOUT, t);
ninoderkinderen 0:8d87bc453349 342 return;
ninoderkinderen 0:8d87bc453349 343 }
ninoderkinderen 0:8d87bc453349 344 }
ninoderkinderen 0:8d87bc453349 345 return;
ninoderkinderen 0:8d87bc453349 346 }
ninoderkinderen 0:8d87bc453349 347
ninoderkinderen 0:8d87bc453349 348 #if NO_SYS
ninoderkinderen 0:8d87bc453349 349
ninoderkinderen 0:8d87bc453349 350 /** Handle timeouts for NO_SYS==1 (i.e. without using
ninoderkinderen 0:8d87bc453349 351 * tcpip_thread/sys_timeouts_mbox_fetch(). Uses sys_now() to call timeout
ninoderkinderen 0:8d87bc453349 352 * handler functions when timeouts expire.
ninoderkinderen 0:8d87bc453349 353 *
ninoderkinderen 0:8d87bc453349 354 * Must be called periodically from your main loop.
ninoderkinderen 0:8d87bc453349 355 */
ninoderkinderen 0:8d87bc453349 356 void
ninoderkinderen 0:8d87bc453349 357 sys_check_timeouts(void)
ninoderkinderen 0:8d87bc453349 358 {
ninoderkinderen 0:8d87bc453349 359 struct sys_timeo *tmptimeout;
ninoderkinderen 0:8d87bc453349 360 u32_t diff;
ninoderkinderen 0:8d87bc453349 361 sys_timeout_handler handler;
ninoderkinderen 0:8d87bc453349 362 void *arg;
ninoderkinderen 0:8d87bc453349 363 int had_one;
ninoderkinderen 0:8d87bc453349 364 u32_t now;
ninoderkinderen 0:8d87bc453349 365
ninoderkinderen 0:8d87bc453349 366 now = sys_now();
ninoderkinderen 0:8d87bc453349 367 if (next_timeout) {
ninoderkinderen 0:8d87bc453349 368 /* this cares for wraparounds */
ninoderkinderen 0:8d87bc453349 369 diff = LWIP_U32_DIFF(now, timeouts_last_time);
ninoderkinderen 0:8d87bc453349 370 do
ninoderkinderen 0:8d87bc453349 371 {
ninoderkinderen 0:8d87bc453349 372 had_one = 0;
ninoderkinderen 0:8d87bc453349 373 tmptimeout = next_timeout;
ninoderkinderen 0:8d87bc453349 374 if (tmptimeout->time <= diff) {
ninoderkinderen 0:8d87bc453349 375 /* timeout has expired */
ninoderkinderen 0:8d87bc453349 376 had_one = 1;
ninoderkinderen 0:8d87bc453349 377 timeouts_last_time = now;
ninoderkinderen 0:8d87bc453349 378 diff -= tmptimeout->time;
ninoderkinderen 0:8d87bc453349 379 next_timeout = tmptimeout->next;
ninoderkinderen 0:8d87bc453349 380 handler = tmptimeout->h;
ninoderkinderen 0:8d87bc453349 381 arg = tmptimeout->arg;
ninoderkinderen 0:8d87bc453349 382 #if LWIP_DEBUG_TIMERNAMES
ninoderkinderen 0:8d87bc453349 383 if (handler != NULL) {
ninoderkinderen 0:8d87bc453349 384 LWIP_DEBUGF(TIMERS_DEBUG, ("sct calling h=%s arg=%p\n",
ninoderkinderen 0:8d87bc453349 385 tmptimeout->handler_name, arg));
ninoderkinderen 0:8d87bc453349 386 }
ninoderkinderen 0:8d87bc453349 387 #endif /* LWIP_DEBUG_TIMERNAMES */
ninoderkinderen 0:8d87bc453349 388 memp_free(MEMP_SYS_TIMEOUT, tmptimeout);
ninoderkinderen 0:8d87bc453349 389 if (handler != NULL) {
ninoderkinderen 0:8d87bc453349 390 handler(arg);
ninoderkinderen 0:8d87bc453349 391 }
ninoderkinderen 0:8d87bc453349 392 }
ninoderkinderen 0:8d87bc453349 393 /* repeat until all expired timers have been called */
ninoderkinderen 0:8d87bc453349 394 }while(had_one);
ninoderkinderen 0:8d87bc453349 395 }
ninoderkinderen 0:8d87bc453349 396 }
ninoderkinderen 0:8d87bc453349 397
ninoderkinderen 0:8d87bc453349 398 /** Set back the timestamp of the last call to sys_check_timeouts()
ninoderkinderen 0:8d87bc453349 399 * This is necessary if sys_check_timeouts() hasn't been called for a long
ninoderkinderen 0:8d87bc453349 400 * time (e.g. while saving energy) to prevent all timer functions of that
ninoderkinderen 0:8d87bc453349 401 * period being called.
ninoderkinderen 0:8d87bc453349 402 */
ninoderkinderen 0:8d87bc453349 403 void
ninoderkinderen 0:8d87bc453349 404 sys_restart_timeouts(void)
ninoderkinderen 0:8d87bc453349 405 {
ninoderkinderen 0:8d87bc453349 406 timeouts_last_time = sys_now();
ninoderkinderen 0:8d87bc453349 407 }
ninoderkinderen 0:8d87bc453349 408
ninoderkinderen 0:8d87bc453349 409 #else /* NO_SYS */
ninoderkinderen 0:8d87bc453349 410
ninoderkinderen 0:8d87bc453349 411 /**
ninoderkinderen 0:8d87bc453349 412 * Wait (forever) for a message to arrive in an mbox.
ninoderkinderen 0:8d87bc453349 413 * While waiting, timeouts are processed.
ninoderkinderen 0:8d87bc453349 414 *
ninoderkinderen 0:8d87bc453349 415 * @param mbox the mbox to fetch the message from
ninoderkinderen 0:8d87bc453349 416 * @param msg the place to store the message
ninoderkinderen 0:8d87bc453349 417 */
ninoderkinderen 0:8d87bc453349 418 void
ninoderkinderen 0:8d87bc453349 419 sys_timeouts_mbox_fetch(sys_mbox_t *mbox, void **msg)
ninoderkinderen 0:8d87bc453349 420 {
ninoderkinderen 0:8d87bc453349 421 u32_t time_needed;
ninoderkinderen 0:8d87bc453349 422 struct sys_timeo *tmptimeout;
ninoderkinderen 0:8d87bc453349 423 sys_timeout_handler handler;
ninoderkinderen 0:8d87bc453349 424 void *arg;
ninoderkinderen 0:8d87bc453349 425
ninoderkinderen 0:8d87bc453349 426 again:
ninoderkinderen 0:8d87bc453349 427 if (!next_timeout) {
ninoderkinderen 0:8d87bc453349 428 time_needed = sys_arch_mbox_fetch(mbox, msg, 0);
ninoderkinderen 0:8d87bc453349 429 } else {
ninoderkinderen 0:8d87bc453349 430 if (next_timeout->time > 0) {
ninoderkinderen 0:8d87bc453349 431 time_needed = sys_arch_mbox_fetch(mbox, msg, next_timeout->time);
ninoderkinderen 0:8d87bc453349 432 } else {
ninoderkinderen 0:8d87bc453349 433 time_needed = SYS_ARCH_TIMEOUT;
ninoderkinderen 0:8d87bc453349 434 }
ninoderkinderen 0:8d87bc453349 435
ninoderkinderen 0:8d87bc453349 436 if (time_needed == SYS_ARCH_TIMEOUT) {
ninoderkinderen 0:8d87bc453349 437 /* If time == SYS_ARCH_TIMEOUT, a timeout occured before a message
ninoderkinderen 0:8d87bc453349 438 could be fetched. We should now call the timeout handler and
ninoderkinderen 0:8d87bc453349 439 deallocate the memory allocated for the timeout. */
ninoderkinderen 0:8d87bc453349 440 tmptimeout = next_timeout;
ninoderkinderen 0:8d87bc453349 441 next_timeout = tmptimeout->next;
ninoderkinderen 0:8d87bc453349 442 handler = tmptimeout->h;
ninoderkinderen 0:8d87bc453349 443 arg = tmptimeout->arg;
ninoderkinderen 0:8d87bc453349 444 #if LWIP_DEBUG_TIMERNAMES
ninoderkinderen 0:8d87bc453349 445 if (handler != NULL) {
ninoderkinderen 0:8d87bc453349 446 LWIP_DEBUGF(TIMERS_DEBUG, ("stmf calling h=%s arg=%p\n",
ninoderkinderen 0:8d87bc453349 447 tmptimeout->handler_name, arg));
ninoderkinderen 0:8d87bc453349 448 }
ninoderkinderen 0:8d87bc453349 449 #endif /* LWIP_DEBUG_TIMERNAMES */
ninoderkinderen 0:8d87bc453349 450 memp_free(MEMP_SYS_TIMEOUT, tmptimeout);
ninoderkinderen 0:8d87bc453349 451 if (handler != NULL) {
ninoderkinderen 0:8d87bc453349 452 /* For LWIP_TCPIP_CORE_LOCKING, lock the core before calling the
ninoderkinderen 0:8d87bc453349 453 timeout handler function. */
ninoderkinderen 0:8d87bc453349 454 LOCK_TCPIP_CORE();
ninoderkinderen 0:8d87bc453349 455 handler(arg);
ninoderkinderen 0:8d87bc453349 456 UNLOCK_TCPIP_CORE();
ninoderkinderen 0:8d87bc453349 457 }
ninoderkinderen 0:8d87bc453349 458 LWIP_TCPIP_THREAD_ALIVE();
ninoderkinderen 0:8d87bc453349 459
ninoderkinderen 0:8d87bc453349 460 /* We try again to fetch a message from the mbox. */
ninoderkinderen 0:8d87bc453349 461 goto again;
ninoderkinderen 0:8d87bc453349 462 } else {
ninoderkinderen 0:8d87bc453349 463 /* If time != SYS_ARCH_TIMEOUT, a message was received before the timeout
ninoderkinderen 0:8d87bc453349 464 occured. The time variable is set to the number of
ninoderkinderen 0:8d87bc453349 465 milliseconds we waited for the message. */
ninoderkinderen 0:8d87bc453349 466 if (time_needed < next_timeout->time) {
ninoderkinderen 0:8d87bc453349 467 next_timeout->time -= time_needed;
ninoderkinderen 0:8d87bc453349 468 } else {
ninoderkinderen 0:8d87bc453349 469 next_timeout->time = 0;
ninoderkinderen 0:8d87bc453349 470 }
ninoderkinderen 0:8d87bc453349 471 }
ninoderkinderen 0:8d87bc453349 472 }
ninoderkinderen 0:8d87bc453349 473 }
ninoderkinderen 0:8d87bc453349 474
ninoderkinderen 0:8d87bc453349 475 #endif /* NO_SYS */
ninoderkinderen 0:8d87bc453349 476
ninoderkinderen 0:8d87bc453349 477 #else /* LWIP_TIMERS */
ninoderkinderen 0:8d87bc453349 478 /* Satisfy the TCP code which calls this function */
ninoderkinderen 0:8d87bc453349 479 void
ninoderkinderen 0:8d87bc453349 480 tcp_timer_needed(void)
ninoderkinderen 0:8d87bc453349 481 {
ninoderkinderen 0:8d87bc453349 482 }
ninoderkinderen 0:8d87bc453349 483 #endif /* LWIP_TIMERS */