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Dependencies:   F7_Ethernet WebSocketClient mbed mcp3008

Fork of Nucleo_F746ZG_Ethernet by Dieter Graef

F7_Ethernet/lwip/core/timers.c@0:f9b6112278fe, 2016-06-18 (annotated)

Committer:
DieterGraef
Date:
Sat Jun 18 10:49:12 2016 +0000
Revision:
0:f9b6112278fe
Ethernet for the NUCLEO STM32F746 Board Testprogram uses DHCP and NTP to set the clock

Who changed what in which revision?

UserRevisionLine numberNew contents of line
DieterGraef 0:f9b6112278fe 1 /**
DieterGraef 0:f9b6112278fe 2 * @file
DieterGraef 0:f9b6112278fe 3 * Stack-internal timers implementation.
DieterGraef 0:f9b6112278fe 4 * This file includes timer callbacks for stack-internal timers as well as
DieterGraef 0:f9b6112278fe 5 * functions to set up or stop timers and check for expired timers.
DieterGraef 0:f9b6112278fe 6 *
DieterGraef 0:f9b6112278fe 7 */
DieterGraef 0:f9b6112278fe 8
DieterGraef 0:f9b6112278fe 9 /*
DieterGraef 0:f9b6112278fe 10 * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
DieterGraef 0:f9b6112278fe 11 * All rights reserved.
DieterGraef 0:f9b6112278fe 12 *
DieterGraef 0:f9b6112278fe 13 * Redistribution and use in source and binary forms, with or without modification,
DieterGraef 0:f9b6112278fe 14 * are permitted provided that the following conditions are met:
DieterGraef 0:f9b6112278fe 15 *
DieterGraef 0:f9b6112278fe 16 * 1. Redistributions of source code must retain the above copyright notice,
DieterGraef 0:f9b6112278fe 17 * this list of conditions and the following disclaimer.
DieterGraef 0:f9b6112278fe 18 * 2. Redistributions in binary form must reproduce the above copyright notice,
DieterGraef 0:f9b6112278fe 19 * this list of conditions and the following disclaimer in the documentation
DieterGraef 0:f9b6112278fe 20 * and/or other materials provided with the distribution.
DieterGraef 0:f9b6112278fe 21 * 3. The name of the author may not be used to endorse or promote products
DieterGraef 0:f9b6112278fe 22 * derived from this software without specific prior written permission.
DieterGraef 0:f9b6112278fe 23 *
DieterGraef 0:f9b6112278fe 24 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
DieterGraef 0:f9b6112278fe 25 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
DieterGraef 0:f9b6112278fe 26 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
DieterGraef 0:f9b6112278fe 27 * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
DieterGraef 0:f9b6112278fe 28 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
DieterGraef 0:f9b6112278fe 29 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
DieterGraef 0:f9b6112278fe 30 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
DieterGraef 0:f9b6112278fe 31 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
DieterGraef 0:f9b6112278fe 32 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
DieterGraef 0:f9b6112278fe 33 * OF SUCH DAMAGE.
DieterGraef 0:f9b6112278fe 34 *
DieterGraef 0:f9b6112278fe 35 * This file is part of the lwIP TCP/IP stack.
DieterGraef 0:f9b6112278fe 36 *
DieterGraef 0:f9b6112278fe 37 * Author: Adam Dunkels <adam@sics.se>
DieterGraef 0:f9b6112278fe 38 * Simon Goldschmidt
DieterGraef 0:f9b6112278fe 39 *
DieterGraef 0:f9b6112278fe 40 */
DieterGraef 0:f9b6112278fe 41
DieterGraef 0:f9b6112278fe 42 #include "lwip/opt.h"
DieterGraef 0:f9b6112278fe 43
DieterGraef 0:f9b6112278fe 44 #include "lwip/timers.h"
DieterGraef 0:f9b6112278fe 45 #include "lwip/tcp_impl.h"
DieterGraef 0:f9b6112278fe 46
DieterGraef 0:f9b6112278fe 47 #if LWIP_TIMERS
DieterGraef 0:f9b6112278fe 48
DieterGraef 0:f9b6112278fe 49 #include "lwip/def.h"
DieterGraef 0:f9b6112278fe 50 #include "lwip/memp.h"
DieterGraef 0:f9b6112278fe 51 #include "lwip/tcpip.h"
DieterGraef 0:f9b6112278fe 52
DieterGraef 0:f9b6112278fe 53 #include "lwip/ip_frag.h"
DieterGraef 0:f9b6112278fe 54 #include "netif/etharp.h"
DieterGraef 0:f9b6112278fe 55 #include "lwip/dhcp.h"
DieterGraef 0:f9b6112278fe 56 #include "lwip/autoip.h"
DieterGraef 0:f9b6112278fe 57 #include "lwip/igmp.h"
DieterGraef 0:f9b6112278fe 58 #include "lwip/dns.h"
DieterGraef 0:f9b6112278fe 59 #include "lwip/sys.h"
DieterGraef 0:f9b6112278fe 60 #include "lwip/pbuf.h"
DieterGraef 0:f9b6112278fe 61
DieterGraef 0:f9b6112278fe 62
DieterGraef 0:f9b6112278fe 63 /** The one and only timeout list */
DieterGraef 0:f9b6112278fe 64 static struct sys_timeo *next_timeout;
DieterGraef 0:f9b6112278fe 65 #if NO_SYS
DieterGraef 0:f9b6112278fe 66 static u32_t timeouts_last_time;
DieterGraef 0:f9b6112278fe 67 #endif /* NO_SYS */
DieterGraef 0:f9b6112278fe 68
DieterGraef 0:f9b6112278fe 69 #if LWIP_TCP
DieterGraef 0:f9b6112278fe 70 /** global variable that shows if the tcp timer is currently scheduled or not */
DieterGraef 0:f9b6112278fe 71 static int tcpip_tcp_timer_active;
DieterGraef 0:f9b6112278fe 72
DieterGraef 0:f9b6112278fe 73 /**
DieterGraef 0:f9b6112278fe 74 * Timer callback function that calls tcp_tmr() and reschedules itself.
DieterGraef 0:f9b6112278fe 75 *
DieterGraef 0:f9b6112278fe 76 * @param arg unused argument
DieterGraef 0:f9b6112278fe 77 */
DieterGraef 0:f9b6112278fe 78 static void
DieterGraef 0:f9b6112278fe 79 tcpip_tcp_timer(void *arg)
DieterGraef 0:f9b6112278fe 80 {
DieterGraef 0:f9b6112278fe 81 LWIP_UNUSED_ARG(arg);
DieterGraef 0:f9b6112278fe 82
DieterGraef 0:f9b6112278fe 83 /* call TCP timer handler */
DieterGraef 0:f9b6112278fe 84 tcp_tmr();
DieterGraef 0:f9b6112278fe 85 /* timer still needed? */
DieterGraef 0:f9b6112278fe 86 if (tcp_active_pcbs || tcp_tw_pcbs) {
DieterGraef 0:f9b6112278fe 87 /* restart timer */
DieterGraef 0:f9b6112278fe 88 sys_timeout(TCP_TMR_INTERVAL, tcpip_tcp_timer, NULL);
DieterGraef 0:f9b6112278fe 89 } else {
DieterGraef 0:f9b6112278fe 90 /* disable timer */
DieterGraef 0:f9b6112278fe 91 tcpip_tcp_timer_active = 0;
DieterGraef 0:f9b6112278fe 92 }
DieterGraef 0:f9b6112278fe 93 }
DieterGraef 0:f9b6112278fe 94
DieterGraef 0:f9b6112278fe 95 /**
DieterGraef 0:f9b6112278fe 96 * Called from TCP_REG when registering a new PCB:
DieterGraef 0:f9b6112278fe 97 * the reason is to have the TCP timer only running when
DieterGraef 0:f9b6112278fe 98 * there are active (or time-wait) PCBs.
DieterGraef 0:f9b6112278fe 99 */
DieterGraef 0:f9b6112278fe 100 void
DieterGraef 0:f9b6112278fe 101 tcp_timer_needed(void)
DieterGraef 0:f9b6112278fe 102 {
DieterGraef 0:f9b6112278fe 103 /* timer is off but needed again? */
DieterGraef 0:f9b6112278fe 104 if (!tcpip_tcp_timer_active && (tcp_active_pcbs || tcp_tw_pcbs)) {
DieterGraef 0:f9b6112278fe 105 /* enable and start timer */
DieterGraef 0:f9b6112278fe 106 tcpip_tcp_timer_active = 1;
DieterGraef 0:f9b6112278fe 107 sys_timeout(TCP_TMR_INTERVAL, tcpip_tcp_timer, NULL);
DieterGraef 0:f9b6112278fe 108 }
DieterGraef 0:f9b6112278fe 109 }
DieterGraef 0:f9b6112278fe 110 #endif /* LWIP_TCP */
DieterGraef 0:f9b6112278fe 111
DieterGraef 0:f9b6112278fe 112 #if IP_REASSEMBLY
DieterGraef 0:f9b6112278fe 113 /**
DieterGraef 0:f9b6112278fe 114 * Timer callback function that calls ip_reass_tmr() and reschedules itself.
DieterGraef 0:f9b6112278fe 115 *
DieterGraef 0:f9b6112278fe 116 * @param arg unused argument
DieterGraef 0:f9b6112278fe 117 */
DieterGraef 0:f9b6112278fe 118 static void
DieterGraef 0:f9b6112278fe 119 ip_reass_timer(void *arg)
DieterGraef 0:f9b6112278fe 120 {
DieterGraef 0:f9b6112278fe 121 LWIP_UNUSED_ARG(arg);
DieterGraef 0:f9b6112278fe 122 LWIP_DEBUGF(TIMERS_DEBUG, ("tcpip: ip_reass_tmr()\n"));
DieterGraef 0:f9b6112278fe 123 ip_reass_tmr();
DieterGraef 0:f9b6112278fe 124 sys_timeout(IP_TMR_INTERVAL, ip_reass_timer, NULL);
DieterGraef 0:f9b6112278fe 125 }
DieterGraef 0:f9b6112278fe 126 #endif /* IP_REASSEMBLY */
DieterGraef 0:f9b6112278fe 127
DieterGraef 0:f9b6112278fe 128 #if LWIP_ARP
DieterGraef 0:f9b6112278fe 129 /**
DieterGraef 0:f9b6112278fe 130 * Timer callback function that calls etharp_tmr() and reschedules itself.
DieterGraef 0:f9b6112278fe 131 *
DieterGraef 0:f9b6112278fe 132 * @param arg unused argument
DieterGraef 0:f9b6112278fe 133 */
DieterGraef 0:f9b6112278fe 134 static void
DieterGraef 0:f9b6112278fe 135 arp_timer(void *arg)
DieterGraef 0:f9b6112278fe 136 {
DieterGraef 0:f9b6112278fe 137 LWIP_UNUSED_ARG(arg);
DieterGraef 0:f9b6112278fe 138 LWIP_DEBUGF(TIMERS_DEBUG, ("tcpip: etharp_tmr()\n"));
DieterGraef 0:f9b6112278fe 139 etharp_tmr();
DieterGraef 0:f9b6112278fe 140 sys_timeout(ARP_TMR_INTERVAL, arp_timer, NULL);
DieterGraef 0:f9b6112278fe 141 }
DieterGraef 0:f9b6112278fe 142 #endif /* LWIP_ARP */
DieterGraef 0:f9b6112278fe 143
DieterGraef 0:f9b6112278fe 144 #if LWIP_DHCP
DieterGraef 0:f9b6112278fe 145 /**
DieterGraef 0:f9b6112278fe 146 * Timer callback function that calls dhcp_coarse_tmr() and reschedules itself.
DieterGraef 0:f9b6112278fe 147 *
DieterGraef 0:f9b6112278fe 148 * @param arg unused argument
DieterGraef 0:f9b6112278fe 149 */
DieterGraef 0:f9b6112278fe 150 static void
DieterGraef 0:f9b6112278fe 151 dhcp_timer_coarse(void *arg)
DieterGraef 0:f9b6112278fe 152 {
DieterGraef 0:f9b6112278fe 153 LWIP_UNUSED_ARG(arg);
DieterGraef 0:f9b6112278fe 154 LWIP_DEBUGF(TIMERS_DEBUG, ("tcpip: dhcp_coarse_tmr()\n"));
DieterGraef 0:f9b6112278fe 155 dhcp_coarse_tmr();
DieterGraef 0:f9b6112278fe 156 sys_timeout(DHCP_COARSE_TIMER_MSECS, dhcp_timer_coarse, NULL);
DieterGraef 0:f9b6112278fe 157 }
DieterGraef 0:f9b6112278fe 158
DieterGraef 0:f9b6112278fe 159 /**
DieterGraef 0:f9b6112278fe 160 * Timer callback function that calls dhcp_fine_tmr() and reschedules itself.
DieterGraef 0:f9b6112278fe 161 *
DieterGraef 0:f9b6112278fe 162 * @param arg unused argument
DieterGraef 0:f9b6112278fe 163 */
DieterGraef 0:f9b6112278fe 164 static void
DieterGraef 0:f9b6112278fe 165 dhcp_timer_fine(void *arg)
DieterGraef 0:f9b6112278fe 166 {
DieterGraef 0:f9b6112278fe 167 LWIP_UNUSED_ARG(arg);
DieterGraef 0:f9b6112278fe 168 LWIP_DEBUGF(TIMERS_DEBUG, ("tcpip: dhcp_fine_tmr()\n"));
DieterGraef 0:f9b6112278fe 169 dhcp_fine_tmr();
DieterGraef 0:f9b6112278fe 170 sys_timeout(DHCP_FINE_TIMER_MSECS, dhcp_timer_fine, NULL);
DieterGraef 0:f9b6112278fe 171 }
DieterGraef 0:f9b6112278fe 172 #endif /* LWIP_DHCP */
DieterGraef 0:f9b6112278fe 173
DieterGraef 0:f9b6112278fe 174 #if LWIP_AUTOIP
DieterGraef 0:f9b6112278fe 175 /**
DieterGraef 0:f9b6112278fe 176 * Timer callback function that calls autoip_tmr() and reschedules itself.
DieterGraef 0:f9b6112278fe 177 *
DieterGraef 0:f9b6112278fe 178 * @param arg unused argument
DieterGraef 0:f9b6112278fe 179 */
DieterGraef 0:f9b6112278fe 180 static void
DieterGraef 0:f9b6112278fe 181 autoip_timer(void *arg)
DieterGraef 0:f9b6112278fe 182 {
DieterGraef 0:f9b6112278fe 183 LWIP_UNUSED_ARG(arg);
DieterGraef 0:f9b6112278fe 184 LWIP_DEBUGF(TIMERS_DEBUG, ("tcpip: autoip_tmr()\n"));
DieterGraef 0:f9b6112278fe 185 autoip_tmr();
DieterGraef 0:f9b6112278fe 186 sys_timeout(AUTOIP_TMR_INTERVAL, autoip_timer, NULL);
DieterGraef 0:f9b6112278fe 187 }
DieterGraef 0:f9b6112278fe 188 #endif /* LWIP_AUTOIP */
DieterGraef 0:f9b6112278fe 189
DieterGraef 0:f9b6112278fe 190 #if LWIP_IGMP
DieterGraef 0:f9b6112278fe 191 /**
DieterGraef 0:f9b6112278fe 192 * Timer callback function that calls igmp_tmr() and reschedules itself.
DieterGraef 0:f9b6112278fe 193 *
DieterGraef 0:f9b6112278fe 194 * @param arg unused argument
DieterGraef 0:f9b6112278fe 195 */
DieterGraef 0:f9b6112278fe 196 static void
DieterGraef 0:f9b6112278fe 197 igmp_timer(void *arg)
DieterGraef 0:f9b6112278fe 198 {
DieterGraef 0:f9b6112278fe 199 LWIP_UNUSED_ARG(arg);
DieterGraef 0:f9b6112278fe 200 LWIP_DEBUGF(TIMERS_DEBUG, ("tcpip: igmp_tmr()\n"));
DieterGraef 0:f9b6112278fe 201 igmp_tmr();
DieterGraef 0:f9b6112278fe 202 sys_timeout(IGMP_TMR_INTERVAL, igmp_timer, NULL);
DieterGraef 0:f9b6112278fe 203 }
DieterGraef 0:f9b6112278fe 204 #endif /* LWIP_IGMP */
DieterGraef 0:f9b6112278fe 205
DieterGraef 0:f9b6112278fe 206 #if LWIP_DNS
DieterGraef 0:f9b6112278fe 207 /**
DieterGraef 0:f9b6112278fe 208 * Timer callback function that calls dns_tmr() and reschedules itself.
DieterGraef 0:f9b6112278fe 209 *
DieterGraef 0:f9b6112278fe 210 * @param arg unused argument
DieterGraef 0:f9b6112278fe 211 */
DieterGraef 0:f9b6112278fe 212 static void
DieterGraef 0:f9b6112278fe 213 dns_timer(void *arg)
DieterGraef 0:f9b6112278fe 214 {
DieterGraef 0:f9b6112278fe 215 LWIP_UNUSED_ARG(arg);
DieterGraef 0:f9b6112278fe 216 LWIP_DEBUGF(TIMERS_DEBUG, ("tcpip: dns_tmr()\n"));
DieterGraef 0:f9b6112278fe 217 dns_tmr();
DieterGraef 0:f9b6112278fe 218 sys_timeout(DNS_TMR_INTERVAL, dns_timer, NULL);
DieterGraef 0:f9b6112278fe 219 }
DieterGraef 0:f9b6112278fe 220 #endif /* LWIP_DNS */
DieterGraef 0:f9b6112278fe 221
DieterGraef 0:f9b6112278fe 222 /** Initialize this module */
DieterGraef 0:f9b6112278fe 223 void sys_timeouts_init(void)
DieterGraef 0:f9b6112278fe 224 {
DieterGraef 0:f9b6112278fe 225 #if IP_REASSEMBLY
DieterGraef 0:f9b6112278fe 226 sys_timeout(IP_TMR_INTERVAL, ip_reass_timer, NULL);
DieterGraef 0:f9b6112278fe 227 #endif /* IP_REASSEMBLY */
DieterGraef 0:f9b6112278fe 228 #if LWIP_ARP
DieterGraef 0:f9b6112278fe 229 sys_timeout(ARP_TMR_INTERVAL, arp_timer, NULL);
DieterGraef 0:f9b6112278fe 230 #endif /* LWIP_ARP */
DieterGraef 0:f9b6112278fe 231 #if LWIP_DHCP
DieterGraef 0:f9b6112278fe 232 sys_timeout(DHCP_COARSE_TIMER_MSECS, dhcp_timer_coarse, NULL);
DieterGraef 0:f9b6112278fe 233 sys_timeout(DHCP_FINE_TIMER_MSECS, dhcp_timer_fine, NULL);
DieterGraef 0:f9b6112278fe 234 #endif /* LWIP_DHCP */
DieterGraef 0:f9b6112278fe 235 #if LWIP_AUTOIP
DieterGraef 0:f9b6112278fe 236 sys_timeout(AUTOIP_TMR_INTERVAL, autoip_timer, NULL);
DieterGraef 0:f9b6112278fe 237 #endif /* LWIP_AUTOIP */
DieterGraef 0:f9b6112278fe 238 #if LWIP_IGMP
DieterGraef 0:f9b6112278fe 239 sys_timeout(IGMP_TMR_INTERVAL, igmp_timer, NULL);
DieterGraef 0:f9b6112278fe 240 #endif /* LWIP_IGMP */
DieterGraef 0:f9b6112278fe 241 #if LWIP_DNS
DieterGraef 0:f9b6112278fe 242 sys_timeout(DNS_TMR_INTERVAL, dns_timer, NULL);
DieterGraef 0:f9b6112278fe 243 #endif /* LWIP_DNS */
DieterGraef 0:f9b6112278fe 244
DieterGraef 0:f9b6112278fe 245 #if NO_SYS
DieterGraef 0:f9b6112278fe 246 /* Initialise timestamp for sys_check_timeouts */
DieterGraef 0:f9b6112278fe 247 timeouts_last_time = sys_now();
DieterGraef 0:f9b6112278fe 248 #endif
DieterGraef 0:f9b6112278fe 249 }
DieterGraef 0:f9b6112278fe 250
DieterGraef 0:f9b6112278fe 251 /**
DieterGraef 0:f9b6112278fe 252 * Create a one-shot timer (aka timeout). Timeouts are processed in the
DieterGraef 0:f9b6112278fe 253 * following cases:
DieterGraef 0:f9b6112278fe 254 * - while waiting for a message using sys_timeouts_mbox_fetch()
DieterGraef 0:f9b6112278fe 255 * - by calling sys_check_timeouts() (NO_SYS==1 only)
DieterGraef 0:f9b6112278fe 256 *
DieterGraef 0:f9b6112278fe 257 * @param msecs time in milliseconds after that the timer should expire
DieterGraef 0:f9b6112278fe 258 * @param handler callback function to call when msecs have elapsed
DieterGraef 0:f9b6112278fe 259 * @param arg argument to pass to the callback function
DieterGraef 0:f9b6112278fe 260 */
DieterGraef 0:f9b6112278fe 261 #if LWIP_DEBUG_TIMERNAMES
DieterGraef 0:f9b6112278fe 262 void
DieterGraef 0:f9b6112278fe 263 sys_timeout_debug(u32_t msecs, sys_timeout_handler handler, void *arg, const char* handler_name)
DieterGraef 0:f9b6112278fe 264 #else /* LWIP_DEBUG_TIMERNAMES */
DieterGraef 0:f9b6112278fe 265 void
DieterGraef 0:f9b6112278fe 266 sys_timeout(u32_t msecs, sys_timeout_handler handler, void *arg)
DieterGraef 0:f9b6112278fe 267 #endif /* LWIP_DEBUG_TIMERNAMES */
DieterGraef 0:f9b6112278fe 268 {
DieterGraef 0:f9b6112278fe 269 struct sys_timeo *timeout, *t;
DieterGraef 0:f9b6112278fe 270
DieterGraef 0:f9b6112278fe 271 timeout = (struct sys_timeo *)memp_malloc(MEMP_SYS_TIMEOUT);
DieterGraef 0:f9b6112278fe 272 if (timeout == NULL) {
DieterGraef 0:f9b6112278fe 273 LWIP_ASSERT("sys_timeout: timeout != NULL, pool MEMP_SYS_TIMEOUT is empty", timeout != NULL);
DieterGraef 0:f9b6112278fe 274 return;
DieterGraef 0:f9b6112278fe 275 }
DieterGraef 0:f9b6112278fe 276 timeout->next = NULL;
DieterGraef 0:f9b6112278fe 277 timeout->h = handler;
DieterGraef 0:f9b6112278fe 278 timeout->arg = arg;
DieterGraef 0:f9b6112278fe 279 timeout->time = msecs;
DieterGraef 0:f9b6112278fe 280 #if LWIP_DEBUG_TIMERNAMES
DieterGraef 0:f9b6112278fe 281 timeout->handler_name = handler_name;
DieterGraef 0:f9b6112278fe 282 LWIP_DEBUGF(TIMERS_DEBUG, ("sys_timeout: %p msecs=%"U32_F" handler=%s arg=%p\n",
DieterGraef 0:f9b6112278fe 283 (void *)timeout, msecs, handler_name, (void *)arg));
DieterGraef 0:f9b6112278fe 284 #endif /* LWIP_DEBUG_TIMERNAMES */
DieterGraef 0:f9b6112278fe 285
DieterGraef 0:f9b6112278fe 286 if (next_timeout == NULL) {
DieterGraef 0:f9b6112278fe 287 next_timeout = timeout;
DieterGraef 0:f9b6112278fe 288 return;
DieterGraef 0:f9b6112278fe 289 }
DieterGraef 0:f9b6112278fe 290
DieterGraef 0:f9b6112278fe 291 if (next_timeout->time > msecs) {
DieterGraef 0:f9b6112278fe 292 next_timeout->time -= msecs;
DieterGraef 0:f9b6112278fe 293 timeout->next = next_timeout;
DieterGraef 0:f9b6112278fe 294 next_timeout = timeout;
DieterGraef 0:f9b6112278fe 295 } else {
DieterGraef 0:f9b6112278fe 296 for(t = next_timeout; t != NULL; t = t->next) {
DieterGraef 0:f9b6112278fe 297 timeout->time -= t->time;
DieterGraef 0:f9b6112278fe 298 if (t->next == NULL || t->next->time > timeout->time) {
DieterGraef 0:f9b6112278fe 299 if (t->next != NULL) {
DieterGraef 0:f9b6112278fe 300 t->next->time -= timeout->time;
DieterGraef 0:f9b6112278fe 301 }
DieterGraef 0:f9b6112278fe 302 timeout->next = t->next;
DieterGraef 0:f9b6112278fe 303 t->next = timeout;
DieterGraef 0:f9b6112278fe 304 break;
DieterGraef 0:f9b6112278fe 305 }
DieterGraef 0:f9b6112278fe 306 }
DieterGraef 0:f9b6112278fe 307 }
DieterGraef 0:f9b6112278fe 308 }
DieterGraef 0:f9b6112278fe 309
DieterGraef 0:f9b6112278fe 310 /**
DieterGraef 0:f9b6112278fe 311 * Go through timeout list (for this task only) and remove the first matching
DieterGraef 0:f9b6112278fe 312 * entry, even though the timeout has not triggered yet.
DieterGraef 0:f9b6112278fe 313 *
DieterGraef 0:f9b6112278fe 314 * @note This function only works as expected if there is only one timeout
DieterGraef 0:f9b6112278fe 315 * calling 'handler' in the list of timeouts.
DieterGraef 0:f9b6112278fe 316 *
DieterGraef 0:f9b6112278fe 317 * @param handler callback function that would be called by the timeout
DieterGraef 0:f9b6112278fe 318 * @param arg callback argument that would be passed to handler
DieterGraef 0:f9b6112278fe 319 */
DieterGraef 0:f9b6112278fe 320 void
DieterGraef 0:f9b6112278fe 321 sys_untimeout(sys_timeout_handler handler, void *arg)
DieterGraef 0:f9b6112278fe 322 {
DieterGraef 0:f9b6112278fe 323 struct sys_timeo *prev_t, *t;
DieterGraef 0:f9b6112278fe 324
DieterGraef 0:f9b6112278fe 325 if (next_timeout == NULL) {
DieterGraef 0:f9b6112278fe 326 return;
DieterGraef 0:f9b6112278fe 327 }
DieterGraef 0:f9b6112278fe 328
DieterGraef 0:f9b6112278fe 329 for (t = next_timeout, prev_t = NULL; t != NULL; prev_t = t, t = t->next) {
DieterGraef 0:f9b6112278fe 330 if ((t->h == handler) && (t->arg == arg)) {
DieterGraef 0:f9b6112278fe 331 /* We have a match */
DieterGraef 0:f9b6112278fe 332 /* Unlink from previous in list */
DieterGraef 0:f9b6112278fe 333 if (prev_t == NULL) {
DieterGraef 0:f9b6112278fe 334 next_timeout = t->next;
DieterGraef 0:f9b6112278fe 335 } else {
DieterGraef 0:f9b6112278fe 336 prev_t->next = t->next;
DieterGraef 0:f9b6112278fe 337 }
DieterGraef 0:f9b6112278fe 338 /* If not the last one, add time of this one back to next */
DieterGraef 0:f9b6112278fe 339 if (t->next != NULL) {
DieterGraef 0:f9b6112278fe 340 t->next->time += t->time;
DieterGraef 0:f9b6112278fe 341 }
DieterGraef 0:f9b6112278fe 342 memp_free(MEMP_SYS_TIMEOUT, t);
DieterGraef 0:f9b6112278fe 343 return;
DieterGraef 0:f9b6112278fe 344 }
DieterGraef 0:f9b6112278fe 345 }
DieterGraef 0:f9b6112278fe 346 return;
DieterGraef 0:f9b6112278fe 347 }
DieterGraef 0:f9b6112278fe 348
DieterGraef 0:f9b6112278fe 349 #if NO_SYS
DieterGraef 0:f9b6112278fe 350
DieterGraef 0:f9b6112278fe 351 /** Handle timeouts for NO_SYS==1 (i.e. without using
DieterGraef 0:f9b6112278fe 352 * tcpip_thread/sys_timeouts_mbox_fetch(). Uses sys_now() to call timeout
DieterGraef 0:f9b6112278fe 353 * handler functions when timeouts expire.
DieterGraef 0:f9b6112278fe 354 *
DieterGraef 0:f9b6112278fe 355 * Must be called periodically from your main loop.
DieterGraef 0:f9b6112278fe 356 */
DieterGraef 0:f9b6112278fe 357 void
DieterGraef 0:f9b6112278fe 358 sys_check_timeouts(void)
DieterGraef 0:f9b6112278fe 359 {
DieterGraef 0:f9b6112278fe 360 if (next_timeout) {
DieterGraef 0:f9b6112278fe 361 struct sys_timeo *tmptimeout;
DieterGraef 0:f9b6112278fe 362 u32_t diff;
DieterGraef 0:f9b6112278fe 363 sys_timeout_handler handler;
DieterGraef 0:f9b6112278fe 364 void *arg;
DieterGraef 0:f9b6112278fe 365 u8_t had_one;
DieterGraef 0:f9b6112278fe 366 u32_t now;
DieterGraef 0:f9b6112278fe 367
DieterGraef 0:f9b6112278fe 368 now = sys_now();
DieterGraef 0:f9b6112278fe 369 /* this cares for wraparounds */
DieterGraef 0:f9b6112278fe 370 diff = now - timeouts_last_time;
DieterGraef 0:f9b6112278fe 371 do
DieterGraef 0:f9b6112278fe 372 {
DieterGraef 0:f9b6112278fe 373 #if PBUF_POOL_FREE_OOSEQ
DieterGraef 0:f9b6112278fe 374 PBUF_CHECK_FREE_OOSEQ();
DieterGraef 0:f9b6112278fe 375 #endif /* PBUF_POOL_FREE_OOSEQ */
DieterGraef 0:f9b6112278fe 376 had_one = 0;
DieterGraef 0:f9b6112278fe 377 tmptimeout = next_timeout;
DieterGraef 0:f9b6112278fe 378 if (tmptimeout && (tmptimeout->time <= diff)) {
DieterGraef 0:f9b6112278fe 379 /* timeout has expired */
DieterGraef 0:f9b6112278fe 380 had_one = 1;
DieterGraef 0:f9b6112278fe 381 timeouts_last_time = now;
DieterGraef 0:f9b6112278fe 382 diff -= tmptimeout->time;
DieterGraef 0:f9b6112278fe 383 next_timeout = tmptimeout->next;
DieterGraef 0:f9b6112278fe 384 handler = tmptimeout->h;
DieterGraef 0:f9b6112278fe 385 arg = tmptimeout->arg;
DieterGraef 0:f9b6112278fe 386 #if LWIP_DEBUG_TIMERNAMES
DieterGraef 0:f9b6112278fe 387 if (handler != NULL) {
DieterGraef 0:f9b6112278fe 388 LWIP_DEBUGF(TIMERS_DEBUG, ("sct calling h=%s arg=%p\n",
DieterGraef 0:f9b6112278fe 389 tmptimeout->handler_name, arg));
DieterGraef 0:f9b6112278fe 390 }
DieterGraef 0:f9b6112278fe 391 #endif /* LWIP_DEBUG_TIMERNAMES */
DieterGraef 0:f9b6112278fe 392 memp_free(MEMP_SYS_TIMEOUT, tmptimeout);
DieterGraef 0:f9b6112278fe 393 if (handler != NULL) {
DieterGraef 0:f9b6112278fe 394 handler(arg);
DieterGraef 0:f9b6112278fe 395 }
DieterGraef 0:f9b6112278fe 396 }
DieterGraef 0:f9b6112278fe 397 /* repeat until all expired timers have been called */
DieterGraef 0:f9b6112278fe 398 }while(had_one);
DieterGraef 0:f9b6112278fe 399 }
DieterGraef 0:f9b6112278fe 400 }
DieterGraef 0:f9b6112278fe 401
DieterGraef 0:f9b6112278fe 402 /** Set back the timestamp of the last call to sys_check_timeouts()
DieterGraef 0:f9b6112278fe 403 * This is necessary if sys_check_timeouts() hasn't been called for a long
DieterGraef 0:f9b6112278fe 404 * time (e.g. while saving energy) to prevent all timer functions of that
DieterGraef 0:f9b6112278fe 405 * period being called.
DieterGraef 0:f9b6112278fe 406 */
DieterGraef 0:f9b6112278fe 407 void
DieterGraef 0:f9b6112278fe 408 sys_restart_timeouts(void)
DieterGraef 0:f9b6112278fe 409 {
DieterGraef 0:f9b6112278fe 410 timeouts_last_time = sys_now();
DieterGraef 0:f9b6112278fe 411 }
DieterGraef 0:f9b6112278fe 412
DieterGraef 0:f9b6112278fe 413 #else /* NO_SYS */
DieterGraef 0:f9b6112278fe 414
DieterGraef 0:f9b6112278fe 415 /**
DieterGraef 0:f9b6112278fe 416 * Wait (forever) for a message to arrive in an mbox.
DieterGraef 0:f9b6112278fe 417 * While waiting, timeouts are processed.
DieterGraef 0:f9b6112278fe 418 *
DieterGraef 0:f9b6112278fe 419 * @param mbox the mbox to fetch the message from
DieterGraef 0:f9b6112278fe 420 * @param msg the place to store the message
DieterGraef 0:f9b6112278fe 421 */
DieterGraef 0:f9b6112278fe 422 void
DieterGraef 0:f9b6112278fe 423 sys_timeouts_mbox_fetch(sys_mbox_t *mbox, void **msg)
DieterGraef 0:f9b6112278fe 424 {
DieterGraef 0:f9b6112278fe 425 u32_t time_needed;
DieterGraef 0:f9b6112278fe 426 struct sys_timeo *tmptimeout;
DieterGraef 0:f9b6112278fe 427 sys_timeout_handler handler;
DieterGraef 0:f9b6112278fe 428 void *arg;
DieterGraef 0:f9b6112278fe 429
DieterGraef 0:f9b6112278fe 430 again:
DieterGraef 0:f9b6112278fe 431 if (!next_timeout) {
DieterGraef 0:f9b6112278fe 432 time_needed = sys_arch_mbox_fetch(mbox, msg, 0);
DieterGraef 0:f9b6112278fe 433 } else {
DieterGraef 0:f9b6112278fe 434 if (next_timeout->time > 0) {
DieterGraef 0:f9b6112278fe 435 time_needed = sys_arch_mbox_fetch(mbox, msg, next_timeout->time);
DieterGraef 0:f9b6112278fe 436 } else {
DieterGraef 0:f9b6112278fe 437 time_needed = SYS_ARCH_TIMEOUT;
DieterGraef 0:f9b6112278fe 438 }
DieterGraef 0:f9b6112278fe 439
DieterGraef 0:f9b6112278fe 440 if (time_needed == SYS_ARCH_TIMEOUT) {
DieterGraef 0:f9b6112278fe 441 /* If time == SYS_ARCH_TIMEOUT, a timeout occured before a message
DieterGraef 0:f9b6112278fe 442 could be fetched. We should now call the timeout handler and
DieterGraef 0:f9b6112278fe 443 deallocate the memory allocated for the timeout. */
DieterGraef 0:f9b6112278fe 444 tmptimeout = next_timeout;
DieterGraef 0:f9b6112278fe 445 next_timeout = tmptimeout->next;
DieterGraef 0:f9b6112278fe 446 handler = tmptimeout->h;
DieterGraef 0:f9b6112278fe 447 arg = tmptimeout->arg;
DieterGraef 0:f9b6112278fe 448 #if LWIP_DEBUG_TIMERNAMES
DieterGraef 0:f9b6112278fe 449 if (handler != NULL) {
DieterGraef 0:f9b6112278fe 450 LWIP_DEBUGF(TIMERS_DEBUG, ("stmf calling h=%s arg=%p\n",
DieterGraef 0:f9b6112278fe 451 tmptimeout->handler_name, arg));
DieterGraef 0:f9b6112278fe 452 }
DieterGraef 0:f9b6112278fe 453 #endif /* LWIP_DEBUG_TIMERNAMES */
DieterGraef 0:f9b6112278fe 454 memp_free(MEMP_SYS_TIMEOUT, tmptimeout);
DieterGraef 0:f9b6112278fe 455 if (handler != NULL) {
DieterGraef 0:f9b6112278fe 456 /* For LWIP_TCPIP_CORE_LOCKING, lock the core before calling the
DieterGraef 0:f9b6112278fe 457 timeout handler function. */
DieterGraef 0:f9b6112278fe 458 LOCK_TCPIP_CORE();
DieterGraef 0:f9b6112278fe 459 handler(arg);
DieterGraef 0:f9b6112278fe 460 UNLOCK_TCPIP_CORE();
DieterGraef 0:f9b6112278fe 461 }
DieterGraef 0:f9b6112278fe 462 LWIP_TCPIP_THREAD_ALIVE();
DieterGraef 0:f9b6112278fe 463
DieterGraef 0:f9b6112278fe 464 /* We try again to fetch a message from the mbox. */
DieterGraef 0:f9b6112278fe 465 goto again;
DieterGraef 0:f9b6112278fe 466 } else {
DieterGraef 0:f9b6112278fe 467 /* If time != SYS_ARCH_TIMEOUT, a message was received before the timeout
DieterGraef 0:f9b6112278fe 468 occured. The time variable is set to the number of
DieterGraef 0:f9b6112278fe 469 milliseconds we waited for the message. */
DieterGraef 0:f9b6112278fe 470 if (time_needed < next_timeout->time) {
DieterGraef 0:f9b6112278fe 471 next_timeout->time -= time_needed;
DieterGraef 0:f9b6112278fe 472 } else {
DieterGraef 0:f9b6112278fe 473 next_timeout->time = 0;
DieterGraef 0:f9b6112278fe 474 }
DieterGraef 0:f9b6112278fe 475 }
DieterGraef 0:f9b6112278fe 476 }
DieterGraef 0:f9b6112278fe 477 }
DieterGraef 0:f9b6112278fe 478
DieterGraef 0:f9b6112278fe 479 #endif /* NO_SYS */
DieterGraef 0:f9b6112278fe 480
DieterGraef 0:f9b6112278fe 481 #else /* LWIP_TIMERS */
DieterGraef 0:f9b6112278fe 482 /* Satisfy the TCP code which calls this function */
DieterGraef 0:f9b6112278fe 483 void
DieterGraef 0:f9b6112278fe 484 tcp_timer_needed(void)
DieterGraef 0:f9b6112278fe 485 {
DieterGraef 0:f9b6112278fe 486 }
DieterGraef 0:f9b6112278fe 487 #endif /* LWIP_TIMERS */