Sam Walsh / F7_Ethernet

Forked from STM32F7 internet for nucleo F746ZG

Dependents:   Nucleo_F746ZG_Ethernet_MQTT_Ultrasound

Fork of F7_Ethernet by Dieter Graef

lwip/core/timers.c@2:b4727195c450, 2016-10-24 (annotated)

Committer:
EmbeddedSam
Date:
Mon Oct 24 12:59:21 2016 +0000
Revision:
2:b4727195c450
Parent:
0:d26c1b55cfca 
working with 1 ultrasound sensor approx 10hz update rate on mqtt

Who changed what in which revision?

UserRevisionLine numberNew contents of line
DieterGraef 0:d26c1b55cfca 1 /**
DieterGraef 0:d26c1b55cfca 2 * @file
DieterGraef 0:d26c1b55cfca 3 * Stack-internal timers implementation.
DieterGraef 0:d26c1b55cfca 4 * This file includes timer callbacks for stack-internal timers as well as
DieterGraef 0:d26c1b55cfca 5 * functions to set up or stop timers and check for expired timers.
DieterGraef 0:d26c1b55cfca 6 *
DieterGraef 0:d26c1b55cfca 7 */
DieterGraef 0:d26c1b55cfca 8
DieterGraef 0:d26c1b55cfca 9 /*
DieterGraef 0:d26c1b55cfca 10 * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
DieterGraef 0:d26c1b55cfca 11 * All rights reserved.
DieterGraef 0:d26c1b55cfca 12 *
DieterGraef 0:d26c1b55cfca 13 * Redistribution and use in source and binary forms, with or without modification,
DieterGraef 0:d26c1b55cfca 14 * are permitted provided that the following conditions are met:
DieterGraef 0:d26c1b55cfca 15 *
DieterGraef 0:d26c1b55cfca 16 * 1. Redistributions of source code must retain the above copyright notice,
DieterGraef 0:d26c1b55cfca 17 * this list of conditions and the following disclaimer.
DieterGraef 0:d26c1b55cfca 18 * 2. Redistributions in binary form must reproduce the above copyright notice,
DieterGraef 0:d26c1b55cfca 19 * this list of conditions and the following disclaimer in the documentation
DieterGraef 0:d26c1b55cfca 20 * and/or other materials provided with the distribution.
DieterGraef 0:d26c1b55cfca 21 * 3. The name of the author may not be used to endorse or promote products
DieterGraef 0:d26c1b55cfca 22 * derived from this software without specific prior written permission.
DieterGraef 0:d26c1b55cfca 23 *
DieterGraef 0:d26c1b55cfca 24 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
DieterGraef 0:d26c1b55cfca 25 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
DieterGraef 0:d26c1b55cfca 26 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
DieterGraef 0:d26c1b55cfca 27 * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
DieterGraef 0:d26c1b55cfca 28 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
DieterGraef 0:d26c1b55cfca 29 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
DieterGraef 0:d26c1b55cfca 30 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
DieterGraef 0:d26c1b55cfca 31 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
DieterGraef 0:d26c1b55cfca 32 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
DieterGraef 0:d26c1b55cfca 33 * OF SUCH DAMAGE.
DieterGraef 0:d26c1b55cfca 34 *
DieterGraef 0:d26c1b55cfca 35 * This file is part of the lwIP TCP/IP stack.
DieterGraef 0:d26c1b55cfca 36 *
DieterGraef 0:d26c1b55cfca 37 * Author: Adam Dunkels <adam@sics.se>
DieterGraef 0:d26c1b55cfca 38 * Simon Goldschmidt
DieterGraef 0:d26c1b55cfca 39 *
DieterGraef 0:d26c1b55cfca 40 */
DieterGraef 0:d26c1b55cfca 41
DieterGraef 0:d26c1b55cfca 42 #include "lwip/opt.h"
DieterGraef 0:d26c1b55cfca 43
DieterGraef 0:d26c1b55cfca 44 #include "lwip/timers.h"
DieterGraef 0:d26c1b55cfca 45 #include "lwip/tcp_impl.h"
DieterGraef 0:d26c1b55cfca 46
DieterGraef 0:d26c1b55cfca 47 #if LWIP_TIMERS
DieterGraef 0:d26c1b55cfca 48
DieterGraef 0:d26c1b55cfca 49 #include "lwip/def.h"
DieterGraef 0:d26c1b55cfca 50 #include "lwip/memp.h"
DieterGraef 0:d26c1b55cfca 51 #include "lwip/tcpip.h"
DieterGraef 0:d26c1b55cfca 52
DieterGraef 0:d26c1b55cfca 53 #include "lwip/ip_frag.h"
DieterGraef 0:d26c1b55cfca 54 #include "netif/etharp.h"
DieterGraef 0:d26c1b55cfca 55 #include "lwip/dhcp.h"
DieterGraef 0:d26c1b55cfca 56 #include "lwip/autoip.h"
DieterGraef 0:d26c1b55cfca 57 #include "lwip/igmp.h"
DieterGraef 0:d26c1b55cfca 58 #include "lwip/dns.h"
DieterGraef 0:d26c1b55cfca 59 #include "lwip/sys.h"
DieterGraef 0:d26c1b55cfca 60 #include "lwip/pbuf.h"
DieterGraef 0:d26c1b55cfca 61
DieterGraef 0:d26c1b55cfca 62
DieterGraef 0:d26c1b55cfca 63 /** The one and only timeout list */
DieterGraef 0:d26c1b55cfca 64 static struct sys_timeo *next_timeout;
DieterGraef 0:d26c1b55cfca 65 #if NO_SYS
DieterGraef 0:d26c1b55cfca 66 static u32_t timeouts_last_time;
DieterGraef 0:d26c1b55cfca 67 #endif /* NO_SYS */
DieterGraef 0:d26c1b55cfca 68
DieterGraef 0:d26c1b55cfca 69 #if LWIP_TCP
DieterGraef 0:d26c1b55cfca 70 /** global variable that shows if the tcp timer is currently scheduled or not */
DieterGraef 0:d26c1b55cfca 71 static int tcpip_tcp_timer_active;
DieterGraef 0:d26c1b55cfca 72
DieterGraef 0:d26c1b55cfca 73 /**
DieterGraef 0:d26c1b55cfca 74 * Timer callback function that calls tcp_tmr() and reschedules itself.
DieterGraef 0:d26c1b55cfca 75 *
DieterGraef 0:d26c1b55cfca 76 * @param arg unused argument
DieterGraef 0:d26c1b55cfca 77 */
DieterGraef 0:d26c1b55cfca 78 static void
DieterGraef 0:d26c1b55cfca 79 tcpip_tcp_timer(void *arg)
DieterGraef 0:d26c1b55cfca 80 {
DieterGraef 0:d26c1b55cfca 81 LWIP_UNUSED_ARG(arg);
DieterGraef 0:d26c1b55cfca 82
DieterGraef 0:d26c1b55cfca 83 /* call TCP timer handler */
DieterGraef 0:d26c1b55cfca 84 tcp_tmr();
DieterGraef 0:d26c1b55cfca 85 /* timer still needed? */
DieterGraef 0:d26c1b55cfca 86 if (tcp_active_pcbs || tcp_tw_pcbs) {
DieterGraef 0:d26c1b55cfca 87 /* restart timer */
DieterGraef 0:d26c1b55cfca 88 sys_timeout(TCP_TMR_INTERVAL, tcpip_tcp_timer, NULL);
DieterGraef 0:d26c1b55cfca 89 } else {
DieterGraef 0:d26c1b55cfca 90 /* disable timer */
DieterGraef 0:d26c1b55cfca 91 tcpip_tcp_timer_active = 0;
DieterGraef 0:d26c1b55cfca 92 }
DieterGraef 0:d26c1b55cfca 93 }
DieterGraef 0:d26c1b55cfca 94
DieterGraef 0:d26c1b55cfca 95 /**
DieterGraef 0:d26c1b55cfca 96 * Called from TCP_REG when registering a new PCB:
DieterGraef 0:d26c1b55cfca 97 * the reason is to have the TCP timer only running when
DieterGraef 0:d26c1b55cfca 98 * there are active (or time-wait) PCBs.
DieterGraef 0:d26c1b55cfca 99 */
DieterGraef 0:d26c1b55cfca 100 void
DieterGraef 0:d26c1b55cfca 101 tcp_timer_needed(void)
DieterGraef 0:d26c1b55cfca 102 {
DieterGraef 0:d26c1b55cfca 103 /* timer is off but needed again? */
DieterGraef 0:d26c1b55cfca 104 if (!tcpip_tcp_timer_active && (tcp_active_pcbs || tcp_tw_pcbs)) {
DieterGraef 0:d26c1b55cfca 105 /* enable and start timer */
DieterGraef 0:d26c1b55cfca 106 tcpip_tcp_timer_active = 1;
DieterGraef 0:d26c1b55cfca 107 sys_timeout(TCP_TMR_INTERVAL, tcpip_tcp_timer, NULL);
DieterGraef 0:d26c1b55cfca 108 }
DieterGraef 0:d26c1b55cfca 109 }
DieterGraef 0:d26c1b55cfca 110 #endif /* LWIP_TCP */
DieterGraef 0:d26c1b55cfca 111
DieterGraef 0:d26c1b55cfca 112 #if IP_REASSEMBLY
DieterGraef 0:d26c1b55cfca 113 /**
DieterGraef 0:d26c1b55cfca 114 * Timer callback function that calls ip_reass_tmr() and reschedules itself.
DieterGraef 0:d26c1b55cfca 115 *
DieterGraef 0:d26c1b55cfca 116 * @param arg unused argument
DieterGraef 0:d26c1b55cfca 117 */
DieterGraef 0:d26c1b55cfca 118 static void
DieterGraef 0:d26c1b55cfca 119 ip_reass_timer(void *arg)
DieterGraef 0:d26c1b55cfca 120 {
DieterGraef 0:d26c1b55cfca 121 LWIP_UNUSED_ARG(arg);
DieterGraef 0:d26c1b55cfca 122 LWIP_DEBUGF(TIMERS_DEBUG, ("tcpip: ip_reass_tmr()\n"));
DieterGraef 0:d26c1b55cfca 123 ip_reass_tmr();
DieterGraef 0:d26c1b55cfca 124 sys_timeout(IP_TMR_INTERVAL, ip_reass_timer, NULL);
DieterGraef 0:d26c1b55cfca 125 }
DieterGraef 0:d26c1b55cfca 126 #endif /* IP_REASSEMBLY */
DieterGraef 0:d26c1b55cfca 127
DieterGraef 0:d26c1b55cfca 128 #if LWIP_ARP
DieterGraef 0:d26c1b55cfca 129 /**
DieterGraef 0:d26c1b55cfca 130 * Timer callback function that calls etharp_tmr() and reschedules itself.
DieterGraef 0:d26c1b55cfca 131 *
DieterGraef 0:d26c1b55cfca 132 * @param arg unused argument
DieterGraef 0:d26c1b55cfca 133 */
DieterGraef 0:d26c1b55cfca 134 static void
DieterGraef 0:d26c1b55cfca 135 arp_timer(void *arg)
DieterGraef 0:d26c1b55cfca 136 {
DieterGraef 0:d26c1b55cfca 137 LWIP_UNUSED_ARG(arg);
DieterGraef 0:d26c1b55cfca 138 LWIP_DEBUGF(TIMERS_DEBUG, ("tcpip: etharp_tmr()\n"));
DieterGraef 0:d26c1b55cfca 139 etharp_tmr();
DieterGraef 0:d26c1b55cfca 140 sys_timeout(ARP_TMR_INTERVAL, arp_timer, NULL);
DieterGraef 0:d26c1b55cfca 141 }
DieterGraef 0:d26c1b55cfca 142 #endif /* LWIP_ARP */
DieterGraef 0:d26c1b55cfca 143
DieterGraef 0:d26c1b55cfca 144 #if LWIP_DHCP
DieterGraef 0:d26c1b55cfca 145 /**
DieterGraef 0:d26c1b55cfca 146 * Timer callback function that calls dhcp_coarse_tmr() and reschedules itself.
DieterGraef 0:d26c1b55cfca 147 *
DieterGraef 0:d26c1b55cfca 148 * @param arg unused argument
DieterGraef 0:d26c1b55cfca 149 */
DieterGraef 0:d26c1b55cfca 150 static void
DieterGraef 0:d26c1b55cfca 151 dhcp_timer_coarse(void *arg)
DieterGraef 0:d26c1b55cfca 152 {
DieterGraef 0:d26c1b55cfca 153 LWIP_UNUSED_ARG(arg);
DieterGraef 0:d26c1b55cfca 154 LWIP_DEBUGF(TIMERS_DEBUG, ("tcpip: dhcp_coarse_tmr()\n"));
DieterGraef 0:d26c1b55cfca 155 dhcp_coarse_tmr();
DieterGraef 0:d26c1b55cfca 156 sys_timeout(DHCP_COARSE_TIMER_MSECS, dhcp_timer_coarse, NULL);
DieterGraef 0:d26c1b55cfca 157 }
DieterGraef 0:d26c1b55cfca 158
DieterGraef 0:d26c1b55cfca 159 /**
DieterGraef 0:d26c1b55cfca 160 * Timer callback function that calls dhcp_fine_tmr() and reschedules itself.
DieterGraef 0:d26c1b55cfca 161 *
DieterGraef 0:d26c1b55cfca 162 * @param arg unused argument
DieterGraef 0:d26c1b55cfca 163 */
DieterGraef 0:d26c1b55cfca 164 static void
DieterGraef 0:d26c1b55cfca 165 dhcp_timer_fine(void *arg)
DieterGraef 0:d26c1b55cfca 166 {
DieterGraef 0:d26c1b55cfca 167 LWIP_UNUSED_ARG(arg);
DieterGraef 0:d26c1b55cfca 168 LWIP_DEBUGF(TIMERS_DEBUG, ("tcpip: dhcp_fine_tmr()\n"));
DieterGraef 0:d26c1b55cfca 169 dhcp_fine_tmr();
DieterGraef 0:d26c1b55cfca 170 sys_timeout(DHCP_FINE_TIMER_MSECS, dhcp_timer_fine, NULL);
DieterGraef 0:d26c1b55cfca 171 }
DieterGraef 0:d26c1b55cfca 172 #endif /* LWIP_DHCP */
DieterGraef 0:d26c1b55cfca 173
DieterGraef 0:d26c1b55cfca 174 #if LWIP_AUTOIP
DieterGraef 0:d26c1b55cfca 175 /**
DieterGraef 0:d26c1b55cfca 176 * Timer callback function that calls autoip_tmr() and reschedules itself.
DieterGraef 0:d26c1b55cfca 177 *
DieterGraef 0:d26c1b55cfca 178 * @param arg unused argument
DieterGraef 0:d26c1b55cfca 179 */
DieterGraef 0:d26c1b55cfca 180 static void
DieterGraef 0:d26c1b55cfca 181 autoip_timer(void *arg)
DieterGraef 0:d26c1b55cfca 182 {
DieterGraef 0:d26c1b55cfca 183 LWIP_UNUSED_ARG(arg);
DieterGraef 0:d26c1b55cfca 184 LWIP_DEBUGF(TIMERS_DEBUG, ("tcpip: autoip_tmr()\n"));
DieterGraef 0:d26c1b55cfca 185 autoip_tmr();
DieterGraef 0:d26c1b55cfca 186 sys_timeout(AUTOIP_TMR_INTERVAL, autoip_timer, NULL);
DieterGraef 0:d26c1b55cfca 187 }
DieterGraef 0:d26c1b55cfca 188 #endif /* LWIP_AUTOIP */
DieterGraef 0:d26c1b55cfca 189
DieterGraef 0:d26c1b55cfca 190 #if LWIP_IGMP
DieterGraef 0:d26c1b55cfca 191 /**
DieterGraef 0:d26c1b55cfca 192 * Timer callback function that calls igmp_tmr() and reschedules itself.
DieterGraef 0:d26c1b55cfca 193 *
DieterGraef 0:d26c1b55cfca 194 * @param arg unused argument
DieterGraef 0:d26c1b55cfca 195 */
DieterGraef 0:d26c1b55cfca 196 static void
DieterGraef 0:d26c1b55cfca 197 igmp_timer(void *arg)
DieterGraef 0:d26c1b55cfca 198 {
DieterGraef 0:d26c1b55cfca 199 LWIP_UNUSED_ARG(arg);
DieterGraef 0:d26c1b55cfca 200 LWIP_DEBUGF(TIMERS_DEBUG, ("tcpip: igmp_tmr()\n"));
DieterGraef 0:d26c1b55cfca 201 igmp_tmr();
DieterGraef 0:d26c1b55cfca 202 sys_timeout(IGMP_TMR_INTERVAL, igmp_timer, NULL);
DieterGraef 0:d26c1b55cfca 203 }
DieterGraef 0:d26c1b55cfca 204 #endif /* LWIP_IGMP */
DieterGraef 0:d26c1b55cfca 205
DieterGraef 0:d26c1b55cfca 206 #if LWIP_DNS
DieterGraef 0:d26c1b55cfca 207 /**
DieterGraef 0:d26c1b55cfca 208 * Timer callback function that calls dns_tmr() and reschedules itself.
DieterGraef 0:d26c1b55cfca 209 *
DieterGraef 0:d26c1b55cfca 210 * @param arg unused argument
DieterGraef 0:d26c1b55cfca 211 */
DieterGraef 0:d26c1b55cfca 212 static void
DieterGraef 0:d26c1b55cfca 213 dns_timer(void *arg)
DieterGraef 0:d26c1b55cfca 214 {
DieterGraef 0:d26c1b55cfca 215 LWIP_UNUSED_ARG(arg);
DieterGraef 0:d26c1b55cfca 216 LWIP_DEBUGF(TIMERS_DEBUG, ("tcpip: dns_tmr()\n"));
DieterGraef 0:d26c1b55cfca 217 dns_tmr();
DieterGraef 0:d26c1b55cfca 218 sys_timeout(DNS_TMR_INTERVAL, dns_timer, NULL);
DieterGraef 0:d26c1b55cfca 219 }
DieterGraef 0:d26c1b55cfca 220 #endif /* LWIP_DNS */
DieterGraef 0:d26c1b55cfca 221
DieterGraef 0:d26c1b55cfca 222 /** Initialize this module */
DieterGraef 0:d26c1b55cfca 223 void sys_timeouts_init(void)
DieterGraef 0:d26c1b55cfca 224 {
DieterGraef 0:d26c1b55cfca 225 #if IP_REASSEMBLY
DieterGraef 0:d26c1b55cfca 226 sys_timeout(IP_TMR_INTERVAL, ip_reass_timer, NULL);
DieterGraef 0:d26c1b55cfca 227 #endif /* IP_REASSEMBLY */
DieterGraef 0:d26c1b55cfca 228 #if LWIP_ARP
DieterGraef 0:d26c1b55cfca 229 sys_timeout(ARP_TMR_INTERVAL, arp_timer, NULL);
DieterGraef 0:d26c1b55cfca 230 #endif /* LWIP_ARP */
DieterGraef 0:d26c1b55cfca 231 #if LWIP_DHCP
DieterGraef 0:d26c1b55cfca 232 sys_timeout(DHCP_COARSE_TIMER_MSECS, dhcp_timer_coarse, NULL);
DieterGraef 0:d26c1b55cfca 233 sys_timeout(DHCP_FINE_TIMER_MSECS, dhcp_timer_fine, NULL);
DieterGraef 0:d26c1b55cfca 234 #endif /* LWIP_DHCP */
DieterGraef 0:d26c1b55cfca 235 #if LWIP_AUTOIP
DieterGraef 0:d26c1b55cfca 236 sys_timeout(AUTOIP_TMR_INTERVAL, autoip_timer, NULL);
DieterGraef 0:d26c1b55cfca 237 #endif /* LWIP_AUTOIP */
DieterGraef 0:d26c1b55cfca 238 #if LWIP_IGMP
DieterGraef 0:d26c1b55cfca 239 sys_timeout(IGMP_TMR_INTERVAL, igmp_timer, NULL);
DieterGraef 0:d26c1b55cfca 240 #endif /* LWIP_IGMP */
DieterGraef 0:d26c1b55cfca 241 #if LWIP_DNS
DieterGraef 0:d26c1b55cfca 242 sys_timeout(DNS_TMR_INTERVAL, dns_timer, NULL);
DieterGraef 0:d26c1b55cfca 243 #endif /* LWIP_DNS */
DieterGraef 0:d26c1b55cfca 244
DieterGraef 0:d26c1b55cfca 245 #if NO_SYS
DieterGraef 0:d26c1b55cfca 246 /* Initialise timestamp for sys_check_timeouts */
DieterGraef 0:d26c1b55cfca 247 timeouts_last_time = sys_now();
DieterGraef 0:d26c1b55cfca 248 #endif
DieterGraef 0:d26c1b55cfca 249 }
DieterGraef 0:d26c1b55cfca 250
DieterGraef 0:d26c1b55cfca 251 /**
DieterGraef 0:d26c1b55cfca 252 * Create a one-shot timer (aka timeout). Timeouts are processed in the
DieterGraef 0:d26c1b55cfca 253 * following cases:
DieterGraef 0:d26c1b55cfca 254 * - while waiting for a message using sys_timeouts_mbox_fetch()
DieterGraef 0:d26c1b55cfca 255 * - by calling sys_check_timeouts() (NO_SYS==1 only)
DieterGraef 0:d26c1b55cfca 256 *
DieterGraef 0:d26c1b55cfca 257 * @param msecs time in milliseconds after that the timer should expire
DieterGraef 0:d26c1b55cfca 258 * @param handler callback function to call when msecs have elapsed
DieterGraef 0:d26c1b55cfca 259 * @param arg argument to pass to the callback function
DieterGraef 0:d26c1b55cfca 260 */
DieterGraef 0:d26c1b55cfca 261 #if LWIP_DEBUG_TIMERNAMES
DieterGraef 0:d26c1b55cfca 262 void
DieterGraef 0:d26c1b55cfca 263 sys_timeout_debug(u32_t msecs, sys_timeout_handler handler, void *arg, const char* handler_name)
DieterGraef 0:d26c1b55cfca 264 #else /* LWIP_DEBUG_TIMERNAMES */
DieterGraef 0:d26c1b55cfca 265 void
DieterGraef 0:d26c1b55cfca 266 sys_timeout(u32_t msecs, sys_timeout_handler handler, void *arg)
DieterGraef 0:d26c1b55cfca 267 #endif /* LWIP_DEBUG_TIMERNAMES */
DieterGraef 0:d26c1b55cfca 268 {
DieterGraef 0:d26c1b55cfca 269 struct sys_timeo *timeout, *t;
DieterGraef 0:d26c1b55cfca 270
DieterGraef 0:d26c1b55cfca 271 timeout = (struct sys_timeo *)memp_malloc(MEMP_SYS_TIMEOUT);
DieterGraef 0:d26c1b55cfca 272 if (timeout == NULL) {
DieterGraef 0:d26c1b55cfca 273 LWIP_ASSERT("sys_timeout: timeout != NULL, pool MEMP_SYS_TIMEOUT is empty", timeout != NULL);
DieterGraef 0:d26c1b55cfca 274 return;
DieterGraef 0:d26c1b55cfca 275 }
DieterGraef 0:d26c1b55cfca 276 timeout->next = NULL;
DieterGraef 0:d26c1b55cfca 277 timeout->h = handler;
DieterGraef 0:d26c1b55cfca 278 timeout->arg = arg;
DieterGraef 0:d26c1b55cfca 279 timeout->time = msecs;
DieterGraef 0:d26c1b55cfca 280 #if LWIP_DEBUG_TIMERNAMES
DieterGraef 0:d26c1b55cfca 281 timeout->handler_name = handler_name;
DieterGraef 0:d26c1b55cfca 282 LWIP_DEBUGF(TIMERS_DEBUG, ("sys_timeout: %p msecs=%"U32_F" handler=%s arg=%p\n",
DieterGraef 0:d26c1b55cfca 283 (void *)timeout, msecs, handler_name, (void *)arg));
DieterGraef 0:d26c1b55cfca 284 #endif /* LWIP_DEBUG_TIMERNAMES */
DieterGraef 0:d26c1b55cfca 285
DieterGraef 0:d26c1b55cfca 286 if (next_timeout == NULL) {
DieterGraef 0:d26c1b55cfca 287 next_timeout = timeout;
DieterGraef 0:d26c1b55cfca 288 return;
DieterGraef 0:d26c1b55cfca 289 }
DieterGraef 0:d26c1b55cfca 290
DieterGraef 0:d26c1b55cfca 291 if (next_timeout->time > msecs) {
DieterGraef 0:d26c1b55cfca 292 next_timeout->time -= msecs;
DieterGraef 0:d26c1b55cfca 293 timeout->next = next_timeout;
DieterGraef 0:d26c1b55cfca 294 next_timeout = timeout;
DieterGraef 0:d26c1b55cfca 295 } else {
DieterGraef 0:d26c1b55cfca 296 for(t = next_timeout; t != NULL; t = t->next) {
DieterGraef 0:d26c1b55cfca 297 timeout->time -= t->time;
DieterGraef 0:d26c1b55cfca 298 if (t->next == NULL || t->next->time > timeout->time) {
DieterGraef 0:d26c1b55cfca 299 if (t->next != NULL) {
DieterGraef 0:d26c1b55cfca 300 t->next->time -= timeout->time;
DieterGraef 0:d26c1b55cfca 301 }
DieterGraef 0:d26c1b55cfca 302 timeout->next = t->next;
DieterGraef 0:d26c1b55cfca 303 t->next = timeout;
DieterGraef 0:d26c1b55cfca 304 break;
DieterGraef 0:d26c1b55cfca 305 }
DieterGraef 0:d26c1b55cfca 306 }
DieterGraef 0:d26c1b55cfca 307 }
DieterGraef 0:d26c1b55cfca 308 }
DieterGraef 0:d26c1b55cfca 309
DieterGraef 0:d26c1b55cfca 310 /**
DieterGraef 0:d26c1b55cfca 311 * Go through timeout list (for this task only) and remove the first matching
DieterGraef 0:d26c1b55cfca 312 * entry, even though the timeout has not triggered yet.
DieterGraef 0:d26c1b55cfca 313 *
DieterGraef 0:d26c1b55cfca 314 * @note This function only works as expected if there is only one timeout
DieterGraef 0:d26c1b55cfca 315 * calling 'handler' in the list of timeouts.
DieterGraef 0:d26c1b55cfca 316 *
DieterGraef 0:d26c1b55cfca 317 * @param handler callback function that would be called by the timeout
DieterGraef 0:d26c1b55cfca 318 * @param arg callback argument that would be passed to handler
DieterGraef 0:d26c1b55cfca 319 */
DieterGraef 0:d26c1b55cfca 320 void
DieterGraef 0:d26c1b55cfca 321 sys_untimeout(sys_timeout_handler handler, void *arg)
DieterGraef 0:d26c1b55cfca 322 {
DieterGraef 0:d26c1b55cfca 323 struct sys_timeo *prev_t, *t;
DieterGraef 0:d26c1b55cfca 324
DieterGraef 0:d26c1b55cfca 325 if (next_timeout == NULL) {
DieterGraef 0:d26c1b55cfca 326 return;
DieterGraef 0:d26c1b55cfca 327 }
DieterGraef 0:d26c1b55cfca 328
DieterGraef 0:d26c1b55cfca 329 for (t = next_timeout, prev_t = NULL; t != NULL; prev_t = t, t = t->next) {
DieterGraef 0:d26c1b55cfca 330 if ((t->h == handler) && (t->arg == arg)) {
DieterGraef 0:d26c1b55cfca 331 /* We have a match */
DieterGraef 0:d26c1b55cfca 332 /* Unlink from previous in list */
DieterGraef 0:d26c1b55cfca 333 if (prev_t == NULL) {
DieterGraef 0:d26c1b55cfca 334 next_timeout = t->next;
DieterGraef 0:d26c1b55cfca 335 } else {
DieterGraef 0:d26c1b55cfca 336 prev_t->next = t->next;
DieterGraef 0:d26c1b55cfca 337 }
DieterGraef 0:d26c1b55cfca 338 /* If not the last one, add time of this one back to next */
DieterGraef 0:d26c1b55cfca 339 if (t->next != NULL) {
DieterGraef 0:d26c1b55cfca 340 t->next->time += t->time;
DieterGraef 0:d26c1b55cfca 341 }
DieterGraef 0:d26c1b55cfca 342 memp_free(MEMP_SYS_TIMEOUT, t);
DieterGraef 0:d26c1b55cfca 343 return;
DieterGraef 0:d26c1b55cfca 344 }
DieterGraef 0:d26c1b55cfca 345 }
DieterGraef 0:d26c1b55cfca 346 return;
DieterGraef 0:d26c1b55cfca 347 }
DieterGraef 0:d26c1b55cfca 348
DieterGraef 0:d26c1b55cfca 349 #if NO_SYS
DieterGraef 0:d26c1b55cfca 350
DieterGraef 0:d26c1b55cfca 351 /** Handle timeouts for NO_SYS==1 (i.e. without using
DieterGraef 0:d26c1b55cfca 352 * tcpip_thread/sys_timeouts_mbox_fetch(). Uses sys_now() to call timeout
DieterGraef 0:d26c1b55cfca 353 * handler functions when timeouts expire.
DieterGraef 0:d26c1b55cfca 354 *
DieterGraef 0:d26c1b55cfca 355 * Must be called periodically from your main loop.
DieterGraef 0:d26c1b55cfca 356 */
DieterGraef 0:d26c1b55cfca 357 void
DieterGraef 0:d26c1b55cfca 358 sys_check_timeouts(void)
DieterGraef 0:d26c1b55cfca 359 {
DieterGraef 0:d26c1b55cfca 360 if (next_timeout) {
DieterGraef 0:d26c1b55cfca 361 struct sys_timeo *tmptimeout;
DieterGraef 0:d26c1b55cfca 362 u32_t diff;
DieterGraef 0:d26c1b55cfca 363 sys_timeout_handler handler;
DieterGraef 0:d26c1b55cfca 364 void *arg;
DieterGraef 0:d26c1b55cfca 365 u8_t had_one;
DieterGraef 0:d26c1b55cfca 366 u32_t now;
DieterGraef 0:d26c1b55cfca 367
DieterGraef 0:d26c1b55cfca 368 now = sys_now();
DieterGraef 0:d26c1b55cfca 369 /* this cares for wraparounds */
DieterGraef 0:d26c1b55cfca 370 diff = now - timeouts_last_time;
DieterGraef 0:d26c1b55cfca 371 do
DieterGraef 0:d26c1b55cfca 372 {
DieterGraef 0:d26c1b55cfca 373 #if PBUF_POOL_FREE_OOSEQ
DieterGraef 0:d26c1b55cfca 374 PBUF_CHECK_FREE_OOSEQ();
DieterGraef 0:d26c1b55cfca 375 #endif /* PBUF_POOL_FREE_OOSEQ */
DieterGraef 0:d26c1b55cfca 376 had_one = 0;
DieterGraef 0:d26c1b55cfca 377 tmptimeout = next_timeout;
DieterGraef 0:d26c1b55cfca 378 if (tmptimeout && (tmptimeout->time <= diff)) {
DieterGraef 0:d26c1b55cfca 379 /* timeout has expired */
DieterGraef 0:d26c1b55cfca 380 had_one = 1;
DieterGraef 0:d26c1b55cfca 381 timeouts_last_time = now;
DieterGraef 0:d26c1b55cfca 382 diff -= tmptimeout->time;
DieterGraef 0:d26c1b55cfca 383 next_timeout = tmptimeout->next;
DieterGraef 0:d26c1b55cfca 384 handler = tmptimeout->h;
DieterGraef 0:d26c1b55cfca 385 arg = tmptimeout->arg;
DieterGraef 0:d26c1b55cfca 386 #if LWIP_DEBUG_TIMERNAMES
DieterGraef 0:d26c1b55cfca 387 if (handler != NULL) {
DieterGraef 0:d26c1b55cfca 388 LWIP_DEBUGF(TIMERS_DEBUG, ("sct calling h=%s arg=%p\n",
DieterGraef 0:d26c1b55cfca 389 tmptimeout->handler_name, arg));
DieterGraef 0:d26c1b55cfca 390 }
DieterGraef 0:d26c1b55cfca 391 #endif /* LWIP_DEBUG_TIMERNAMES */
DieterGraef 0:d26c1b55cfca 392 memp_free(MEMP_SYS_TIMEOUT, tmptimeout);
DieterGraef 0:d26c1b55cfca 393 if (handler != NULL) {
DieterGraef 0:d26c1b55cfca 394 handler(arg);
DieterGraef 0:d26c1b55cfca 395 }
DieterGraef 0:d26c1b55cfca 396 }
DieterGraef 0:d26c1b55cfca 397 /* repeat until all expired timers have been called */
DieterGraef 0:d26c1b55cfca 398 }while(had_one);
DieterGraef 0:d26c1b55cfca 399 }
DieterGraef 0:d26c1b55cfca 400 }
DieterGraef 0:d26c1b55cfca 401
DieterGraef 0:d26c1b55cfca 402 /** Set back the timestamp of the last call to sys_check_timeouts()
DieterGraef 0:d26c1b55cfca 403 * This is necessary if sys_check_timeouts() hasn't been called for a long
DieterGraef 0:d26c1b55cfca 404 * time (e.g. while saving energy) to prevent all timer functions of that
DieterGraef 0:d26c1b55cfca 405 * period being called.
DieterGraef 0:d26c1b55cfca 406 */
DieterGraef 0:d26c1b55cfca 407 void
DieterGraef 0:d26c1b55cfca 408 sys_restart_timeouts(void)
DieterGraef 0:d26c1b55cfca 409 {
DieterGraef 0:d26c1b55cfca 410 timeouts_last_time = sys_now();
DieterGraef 0:d26c1b55cfca 411 }
DieterGraef 0:d26c1b55cfca 412
DieterGraef 0:d26c1b55cfca 413 #else /* NO_SYS */
DieterGraef 0:d26c1b55cfca 414
DieterGraef 0:d26c1b55cfca 415 /**
DieterGraef 0:d26c1b55cfca 416 * Wait (forever) for a message to arrive in an mbox.
DieterGraef 0:d26c1b55cfca 417 * While waiting, timeouts are processed.
DieterGraef 0:d26c1b55cfca 418 *
DieterGraef 0:d26c1b55cfca 419 * @param mbox the mbox to fetch the message from
DieterGraef 0:d26c1b55cfca 420 * @param msg the place to store the message
DieterGraef 0:d26c1b55cfca 421 */
DieterGraef 0:d26c1b55cfca 422 void
DieterGraef 0:d26c1b55cfca 423 sys_timeouts_mbox_fetch(sys_mbox_t *mbox, void **msg)
DieterGraef 0:d26c1b55cfca 424 {
DieterGraef 0:d26c1b55cfca 425 u32_t time_needed;
DieterGraef 0:d26c1b55cfca 426 struct sys_timeo *tmptimeout;
DieterGraef 0:d26c1b55cfca 427 sys_timeout_handler handler;
DieterGraef 0:d26c1b55cfca 428 void *arg;
DieterGraef 0:d26c1b55cfca 429
DieterGraef 0:d26c1b55cfca 430 again:
DieterGraef 0:d26c1b55cfca 431 if (!next_timeout) {
DieterGraef 0:d26c1b55cfca 432 time_needed = sys_arch_mbox_fetch(mbox, msg, 0);
DieterGraef 0:d26c1b55cfca 433 } else {
DieterGraef 0:d26c1b55cfca 434 if (next_timeout->time > 0) {
DieterGraef 0:d26c1b55cfca 435 time_needed = sys_arch_mbox_fetch(mbox, msg, next_timeout->time);
DieterGraef 0:d26c1b55cfca 436 } else {
DieterGraef 0:d26c1b55cfca 437 time_needed = SYS_ARCH_TIMEOUT;
DieterGraef 0:d26c1b55cfca 438 }
DieterGraef 0:d26c1b55cfca 439
DieterGraef 0:d26c1b55cfca 440 if (time_needed == SYS_ARCH_TIMEOUT) {
DieterGraef 0:d26c1b55cfca 441 /* If time == SYS_ARCH_TIMEOUT, a timeout occured before a message
DieterGraef 0:d26c1b55cfca 442 could be fetched. We should now call the timeout handler and
DieterGraef 0:d26c1b55cfca 443 deallocate the memory allocated for the timeout. */
DieterGraef 0:d26c1b55cfca 444 tmptimeout = next_timeout;
DieterGraef 0:d26c1b55cfca 445 next_timeout = tmptimeout->next;
DieterGraef 0:d26c1b55cfca 446 handler = tmptimeout->h;
DieterGraef 0:d26c1b55cfca 447 arg = tmptimeout->arg;
DieterGraef 0:d26c1b55cfca 448 #if LWIP_DEBUG_TIMERNAMES
DieterGraef 0:d26c1b55cfca 449 if (handler != NULL) {
DieterGraef 0:d26c1b55cfca 450 LWIP_DEBUGF(TIMERS_DEBUG, ("stmf calling h=%s arg=%p\n",
DieterGraef 0:d26c1b55cfca 451 tmptimeout->handler_name, arg));
DieterGraef 0:d26c1b55cfca 452 }
DieterGraef 0:d26c1b55cfca 453 #endif /* LWIP_DEBUG_TIMERNAMES */
DieterGraef 0:d26c1b55cfca 454 memp_free(MEMP_SYS_TIMEOUT, tmptimeout);
DieterGraef 0:d26c1b55cfca 455 if (handler != NULL) {
DieterGraef 0:d26c1b55cfca 456 /* For LWIP_TCPIP_CORE_LOCKING, lock the core before calling the
DieterGraef 0:d26c1b55cfca 457 timeout handler function. */
DieterGraef 0:d26c1b55cfca 458 LOCK_TCPIP_CORE();
DieterGraef 0:d26c1b55cfca 459 handler(arg);
DieterGraef 0:d26c1b55cfca 460 UNLOCK_TCPIP_CORE();
DieterGraef 0:d26c1b55cfca 461 }
DieterGraef 0:d26c1b55cfca 462 LWIP_TCPIP_THREAD_ALIVE();
DieterGraef 0:d26c1b55cfca 463
DieterGraef 0:d26c1b55cfca 464 /* We try again to fetch a message from the mbox. */
DieterGraef 0:d26c1b55cfca 465 goto again;
DieterGraef 0:d26c1b55cfca 466 } else {
DieterGraef 0:d26c1b55cfca 467 /* If time != SYS_ARCH_TIMEOUT, a message was received before the timeout
DieterGraef 0:d26c1b55cfca 468 occured. The time variable is set to the number of
DieterGraef 0:d26c1b55cfca 469 milliseconds we waited for the message. */
DieterGraef 0:d26c1b55cfca 470 if (time_needed < next_timeout->time) {
DieterGraef 0:d26c1b55cfca 471 next_timeout->time -= time_needed;
DieterGraef 0:d26c1b55cfca 472 } else {
DieterGraef 0:d26c1b55cfca 473 next_timeout->time = 0;
DieterGraef 0:d26c1b55cfca 474 }
DieterGraef 0:d26c1b55cfca 475 }
DieterGraef 0:d26c1b55cfca 476 }
DieterGraef 0:d26c1b55cfca 477 }
DieterGraef 0:d26c1b55cfca 478
DieterGraef 0:d26c1b55cfca 479 #endif /* NO_SYS */
DieterGraef 0:d26c1b55cfca 480
DieterGraef 0:d26c1b55cfca 481 #else /* LWIP_TIMERS */
DieterGraef 0:d26c1b55cfca 482 /* Satisfy the TCP code which calls this function */
DieterGraef 0:d26c1b55cfca 483 void
DieterGraef 0:d26c1b55cfca 484 tcp_timer_needed(void)
DieterGraef 0:d26c1b55cfca 485 {
DieterGraef 0:d26c1b55cfca 486 }
DieterGraef 0:d26c1b55cfca 487 #endif /* LWIP_TIMERS */