CK Sin / Mbed 2 deprecated Ethernetwebsocket

Ethernetwebsoc

Dependencies:   C12832_lcd LM75B WebSocketClient mbed-rtos mbed Socket lwip-eth lwip-sys lwip

EthernetInterface/lwip/core/timers.c@0:0ed2a7c7190c, 2013-05-31 (annotated)

Committer:
GordonSin
Date:
Fri May 31 04:09:54 2013 +0000
Revision:
0:0ed2a7c7190c
31/5/2013;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
GordonSin 0:0ed2a7c7190c 1 /**
GordonSin 0:0ed2a7c7190c 2 * @file
GordonSin 0:0ed2a7c7190c 3 * Stack-internal timers implementation.
GordonSin 0:0ed2a7c7190c 4 * This file includes timer callbacks for stack-internal timers as well as
GordonSin 0:0ed2a7c7190c 5 * functions to set up or stop timers and check for expired timers.
GordonSin 0:0ed2a7c7190c 6 *
GordonSin 0:0ed2a7c7190c 7 */
GordonSin 0:0ed2a7c7190c 8
GordonSin 0:0ed2a7c7190c 9 /*
GordonSin 0:0ed2a7c7190c 10 * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
GordonSin 0:0ed2a7c7190c 11 * All rights reserved.
GordonSin 0:0ed2a7c7190c 12 *
GordonSin 0:0ed2a7c7190c 13 * Redistribution and use in source and binary forms, with or without modification,
GordonSin 0:0ed2a7c7190c 14 * are permitted provided that the following conditions are met:
GordonSin 0:0ed2a7c7190c 15 *
GordonSin 0:0ed2a7c7190c 16 * 1. Redistributions of source code must retain the above copyright notice,
GordonSin 0:0ed2a7c7190c 17 * this list of conditions and the following disclaimer.
GordonSin 0:0ed2a7c7190c 18 * 2. Redistributions in binary form must reproduce the above copyright notice,
GordonSin 0:0ed2a7c7190c 19 * this list of conditions and the following disclaimer in the documentation
GordonSin 0:0ed2a7c7190c 20 * and/or other materials provided with the distribution.
GordonSin 0:0ed2a7c7190c 21 * 3. The name of the author may not be used to endorse or promote products
GordonSin 0:0ed2a7c7190c 22 * derived from this software without specific prior written permission.
GordonSin 0:0ed2a7c7190c 23 *
GordonSin 0:0ed2a7c7190c 24 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
GordonSin 0:0ed2a7c7190c 25 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
GordonSin 0:0ed2a7c7190c 26 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
GordonSin 0:0ed2a7c7190c 27 * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
GordonSin 0:0ed2a7c7190c 28 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
GordonSin 0:0ed2a7c7190c 29 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
GordonSin 0:0ed2a7c7190c 30 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
GordonSin 0:0ed2a7c7190c 31 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
GordonSin 0:0ed2a7c7190c 32 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
GordonSin 0:0ed2a7c7190c 33 * OF SUCH DAMAGE.
GordonSin 0:0ed2a7c7190c 34 *
GordonSin 0:0ed2a7c7190c 35 * This file is part of the lwIP TCP/IP stack.
GordonSin 0:0ed2a7c7190c 36 *
GordonSin 0:0ed2a7c7190c 37 * Author: Adam Dunkels <adam@sics.se>
GordonSin 0:0ed2a7c7190c 38 * Simon Goldschmidt
GordonSin 0:0ed2a7c7190c 39 *
GordonSin 0:0ed2a7c7190c 40 */
GordonSin 0:0ed2a7c7190c 41
GordonSin 0:0ed2a7c7190c 42 #include "lwip/opt.h"
GordonSin 0:0ed2a7c7190c 43
GordonSin 0:0ed2a7c7190c 44 #include "lwip/timers.h"
GordonSin 0:0ed2a7c7190c 45 #include "lwip/tcp_impl.h"
GordonSin 0:0ed2a7c7190c 46
GordonSin 0:0ed2a7c7190c 47 #if LWIP_TIMERS
GordonSin 0:0ed2a7c7190c 48
GordonSin 0:0ed2a7c7190c 49 #include "lwip/def.h"
GordonSin 0:0ed2a7c7190c 50 #include "lwip/memp.h"
GordonSin 0:0ed2a7c7190c 51 #include "lwip/tcpip.h"
GordonSin 0:0ed2a7c7190c 52
GordonSin 0:0ed2a7c7190c 53 #include "lwip/ip_frag.h"
GordonSin 0:0ed2a7c7190c 54 #include "netif/etharp.h"
GordonSin 0:0ed2a7c7190c 55 #include "lwip/dhcp.h"
GordonSin 0:0ed2a7c7190c 56 #include "lwip/autoip.h"
GordonSin 0:0ed2a7c7190c 57 #include "lwip/igmp.h"
GordonSin 0:0ed2a7c7190c 58 #include "lwip/dns.h"
GordonSin 0:0ed2a7c7190c 59
GordonSin 0:0ed2a7c7190c 60
GordonSin 0:0ed2a7c7190c 61 /** The one and only timeout list */
GordonSin 0:0ed2a7c7190c 62 static struct sys_timeo *next_timeout;
GordonSin 0:0ed2a7c7190c 63 #if NO_SYS
GordonSin 0:0ed2a7c7190c 64 static u32_t timeouts_last_time;
GordonSin 0:0ed2a7c7190c 65 #endif /* NO_SYS */
GordonSin 0:0ed2a7c7190c 66
GordonSin 0:0ed2a7c7190c 67 #if LWIP_TCP
GordonSin 0:0ed2a7c7190c 68 /** global variable that shows if the tcp timer is currently scheduled or not */
GordonSin 0:0ed2a7c7190c 69 static int tcpip_tcp_timer_active;
GordonSin 0:0ed2a7c7190c 70
GordonSin 0:0ed2a7c7190c 71 /**
GordonSin 0:0ed2a7c7190c 72 * Timer callback function that calls tcp_tmr() and reschedules itself.
GordonSin 0:0ed2a7c7190c 73 *
GordonSin 0:0ed2a7c7190c 74 * @param arg unused argument
GordonSin 0:0ed2a7c7190c 75 */
GordonSin 0:0ed2a7c7190c 76 static void
GordonSin 0:0ed2a7c7190c 77 tcpip_tcp_timer(void *arg)
GordonSin 0:0ed2a7c7190c 78 {
GordonSin 0:0ed2a7c7190c 79 LWIP_UNUSED_ARG(arg);
GordonSin 0:0ed2a7c7190c 80
GordonSin 0:0ed2a7c7190c 81 /* call TCP timer handler */
GordonSin 0:0ed2a7c7190c 82 tcp_tmr();
GordonSin 0:0ed2a7c7190c 83 /* timer still needed? */
GordonSin 0:0ed2a7c7190c 84 if (tcp_active_pcbs || tcp_tw_pcbs) {
GordonSin 0:0ed2a7c7190c 85 /* restart timer */
GordonSin 0:0ed2a7c7190c 86 sys_timeout(TCP_TMR_INTERVAL, tcpip_tcp_timer, NULL);
GordonSin 0:0ed2a7c7190c 87 } else {
GordonSin 0:0ed2a7c7190c 88 /* disable timer */
GordonSin 0:0ed2a7c7190c 89 tcpip_tcp_timer_active = 0;
GordonSin 0:0ed2a7c7190c 90 }
GordonSin 0:0ed2a7c7190c 91 }
GordonSin 0:0ed2a7c7190c 92
GordonSin 0:0ed2a7c7190c 93 /**
GordonSin 0:0ed2a7c7190c 94 * Called from TCP_REG when registering a new PCB:
GordonSin 0:0ed2a7c7190c 95 * the reason is to have the TCP timer only running when
GordonSin 0:0ed2a7c7190c 96 * there are active (or time-wait) PCBs.
GordonSin 0:0ed2a7c7190c 97 */
GordonSin 0:0ed2a7c7190c 98 void
GordonSin 0:0ed2a7c7190c 99 tcp_timer_needed(void)
GordonSin 0:0ed2a7c7190c 100 {
GordonSin 0:0ed2a7c7190c 101 /* timer is off but needed again? */
GordonSin 0:0ed2a7c7190c 102 if (!tcpip_tcp_timer_active && (tcp_active_pcbs || tcp_tw_pcbs)) {
GordonSin 0:0ed2a7c7190c 103 /* enable and start timer */
GordonSin 0:0ed2a7c7190c 104 tcpip_tcp_timer_active = 1;
GordonSin 0:0ed2a7c7190c 105 sys_timeout(TCP_TMR_INTERVAL, tcpip_tcp_timer, NULL);
GordonSin 0:0ed2a7c7190c 106 }
GordonSin 0:0ed2a7c7190c 107 }
GordonSin 0:0ed2a7c7190c 108 #endif /* LWIP_TCP */
GordonSin 0:0ed2a7c7190c 109
GordonSin 0:0ed2a7c7190c 110 #if IP_REASSEMBLY
GordonSin 0:0ed2a7c7190c 111 /**
GordonSin 0:0ed2a7c7190c 112 * Timer callback function that calls ip_reass_tmr() and reschedules itself.
GordonSin 0:0ed2a7c7190c 113 *
GordonSin 0:0ed2a7c7190c 114 * @param arg unused argument
GordonSin 0:0ed2a7c7190c 115 */
GordonSin 0:0ed2a7c7190c 116 static void
GordonSin 0:0ed2a7c7190c 117 ip_reass_timer(void *arg)
GordonSin 0:0ed2a7c7190c 118 {
GordonSin 0:0ed2a7c7190c 119 LWIP_UNUSED_ARG(arg);
GordonSin 0:0ed2a7c7190c 120 LWIP_DEBUGF(TIMERS_DEBUG, ("tcpip: ip_reass_tmr()\n"));
GordonSin 0:0ed2a7c7190c 121 ip_reass_tmr();
GordonSin 0:0ed2a7c7190c 122 sys_timeout(IP_TMR_INTERVAL, ip_reass_timer, NULL);
GordonSin 0:0ed2a7c7190c 123 }
GordonSin 0:0ed2a7c7190c 124 #endif /* IP_REASSEMBLY */
GordonSin 0:0ed2a7c7190c 125
GordonSin 0:0ed2a7c7190c 126 #if LWIP_ARP
GordonSin 0:0ed2a7c7190c 127 /**
GordonSin 0:0ed2a7c7190c 128 * Timer callback function that calls etharp_tmr() and reschedules itself.
GordonSin 0:0ed2a7c7190c 129 *
GordonSin 0:0ed2a7c7190c 130 * @param arg unused argument
GordonSin 0:0ed2a7c7190c 131 */
GordonSin 0:0ed2a7c7190c 132 static void
GordonSin 0:0ed2a7c7190c 133 arp_timer(void *arg)
GordonSin 0:0ed2a7c7190c 134 {
GordonSin 0:0ed2a7c7190c 135 LWIP_UNUSED_ARG(arg);
GordonSin 0:0ed2a7c7190c 136 LWIP_DEBUGF(TIMERS_DEBUG, ("tcpip: etharp_tmr()\n"));
GordonSin 0:0ed2a7c7190c 137 etharp_tmr();
GordonSin 0:0ed2a7c7190c 138 sys_timeout(ARP_TMR_INTERVAL, arp_timer, NULL);
GordonSin 0:0ed2a7c7190c 139 }
GordonSin 0:0ed2a7c7190c 140 #endif /* LWIP_ARP */
GordonSin 0:0ed2a7c7190c 141
GordonSin 0:0ed2a7c7190c 142 #if LWIP_DHCP
GordonSin 0:0ed2a7c7190c 143 /**
GordonSin 0:0ed2a7c7190c 144 * Timer callback function that calls dhcp_coarse_tmr() and reschedules itself.
GordonSin 0:0ed2a7c7190c 145 *
GordonSin 0:0ed2a7c7190c 146 * @param arg unused argument
GordonSin 0:0ed2a7c7190c 147 */
GordonSin 0:0ed2a7c7190c 148 static void
GordonSin 0:0ed2a7c7190c 149 dhcp_timer_coarse(void *arg)
GordonSin 0:0ed2a7c7190c 150 {
GordonSin 0:0ed2a7c7190c 151 LWIP_UNUSED_ARG(arg);
GordonSin 0:0ed2a7c7190c 152 LWIP_DEBUGF(TIMERS_DEBUG, ("tcpip: dhcp_coarse_tmr()\n"));
GordonSin 0:0ed2a7c7190c 153 dhcp_coarse_tmr();
GordonSin 0:0ed2a7c7190c 154 sys_timeout(DHCP_COARSE_TIMER_MSECS, dhcp_timer_coarse, NULL);
GordonSin 0:0ed2a7c7190c 155 }
GordonSin 0:0ed2a7c7190c 156
GordonSin 0:0ed2a7c7190c 157 /**
GordonSin 0:0ed2a7c7190c 158 * Timer callback function that calls dhcp_fine_tmr() and reschedules itself.
GordonSin 0:0ed2a7c7190c 159 *
GordonSin 0:0ed2a7c7190c 160 * @param arg unused argument
GordonSin 0:0ed2a7c7190c 161 */
GordonSin 0:0ed2a7c7190c 162 static void
GordonSin 0:0ed2a7c7190c 163 dhcp_timer_fine(void *arg)
GordonSin 0:0ed2a7c7190c 164 {
GordonSin 0:0ed2a7c7190c 165 LWIP_UNUSED_ARG(arg);
GordonSin 0:0ed2a7c7190c 166 LWIP_DEBUGF(TIMERS_DEBUG, ("tcpip: dhcp_fine_tmr()\n"));
GordonSin 0:0ed2a7c7190c 167 dhcp_fine_tmr();
GordonSin 0:0ed2a7c7190c 168 sys_timeout(DHCP_FINE_TIMER_MSECS, dhcp_timer_fine, NULL);
GordonSin 0:0ed2a7c7190c 169 }
GordonSin 0:0ed2a7c7190c 170 #endif /* LWIP_DHCP */
GordonSin 0:0ed2a7c7190c 171
GordonSin 0:0ed2a7c7190c 172 #if LWIP_AUTOIP
GordonSin 0:0ed2a7c7190c 173 /**
GordonSin 0:0ed2a7c7190c 174 * Timer callback function that calls autoip_tmr() and reschedules itself.
GordonSin 0:0ed2a7c7190c 175 *
GordonSin 0:0ed2a7c7190c 176 * @param arg unused argument
GordonSin 0:0ed2a7c7190c 177 */
GordonSin 0:0ed2a7c7190c 178 static void
GordonSin 0:0ed2a7c7190c 179 autoip_timer(void *arg)
GordonSin 0:0ed2a7c7190c 180 {
GordonSin 0:0ed2a7c7190c 181 LWIP_UNUSED_ARG(arg);
GordonSin 0:0ed2a7c7190c 182 LWIP_DEBUGF(TIMERS_DEBUG, ("tcpip: autoip_tmr()\n"));
GordonSin 0:0ed2a7c7190c 183 autoip_tmr();
GordonSin 0:0ed2a7c7190c 184 sys_timeout(AUTOIP_TMR_INTERVAL, autoip_timer, NULL);
GordonSin 0:0ed2a7c7190c 185 }
GordonSin 0:0ed2a7c7190c 186 #endif /* LWIP_AUTOIP */
GordonSin 0:0ed2a7c7190c 187
GordonSin 0:0ed2a7c7190c 188 #if LWIP_IGMP
GordonSin 0:0ed2a7c7190c 189 /**
GordonSin 0:0ed2a7c7190c 190 * Timer callback function that calls igmp_tmr() and reschedules itself.
GordonSin 0:0ed2a7c7190c 191 *
GordonSin 0:0ed2a7c7190c 192 * @param arg unused argument
GordonSin 0:0ed2a7c7190c 193 */
GordonSin 0:0ed2a7c7190c 194 static void
GordonSin 0:0ed2a7c7190c 195 igmp_timer(void *arg)
GordonSin 0:0ed2a7c7190c 196 {
GordonSin 0:0ed2a7c7190c 197 LWIP_UNUSED_ARG(arg);
GordonSin 0:0ed2a7c7190c 198 LWIP_DEBUGF(TIMERS_DEBUG, ("tcpip: igmp_tmr()\n"));
GordonSin 0:0ed2a7c7190c 199 igmp_tmr();
GordonSin 0:0ed2a7c7190c 200 sys_timeout(IGMP_TMR_INTERVAL, igmp_timer, NULL);
GordonSin 0:0ed2a7c7190c 201 }
GordonSin 0:0ed2a7c7190c 202 #endif /* LWIP_IGMP */
GordonSin 0:0ed2a7c7190c 203
GordonSin 0:0ed2a7c7190c 204 #if LWIP_DNS
GordonSin 0:0ed2a7c7190c 205 /**
GordonSin 0:0ed2a7c7190c 206 * Timer callback function that calls dns_tmr() and reschedules itself.
GordonSin 0:0ed2a7c7190c 207 *
GordonSin 0:0ed2a7c7190c 208 * @param arg unused argument
GordonSin 0:0ed2a7c7190c 209 */
GordonSin 0:0ed2a7c7190c 210 static void
GordonSin 0:0ed2a7c7190c 211 dns_timer(void *arg)
GordonSin 0:0ed2a7c7190c 212 {
GordonSin 0:0ed2a7c7190c 213 LWIP_UNUSED_ARG(arg);
GordonSin 0:0ed2a7c7190c 214 LWIP_DEBUGF(TIMERS_DEBUG, ("tcpip: dns_tmr()\n"));
GordonSin 0:0ed2a7c7190c 215 dns_tmr();
GordonSin 0:0ed2a7c7190c 216 sys_timeout(DNS_TMR_INTERVAL, dns_timer, NULL);
GordonSin 0:0ed2a7c7190c 217 }
GordonSin 0:0ed2a7c7190c 218 #endif /* LWIP_DNS */
GordonSin 0:0ed2a7c7190c 219
GordonSin 0:0ed2a7c7190c 220 /** Initialize this module */
GordonSin 0:0ed2a7c7190c 221 void sys_timeouts_init(void)
GordonSin 0:0ed2a7c7190c 222 {
GordonSin 0:0ed2a7c7190c 223 #if IP_REASSEMBLY
GordonSin 0:0ed2a7c7190c 224 sys_timeout(IP_TMR_INTERVAL, ip_reass_timer, NULL);
GordonSin 0:0ed2a7c7190c 225 #endif /* IP_REASSEMBLY */
GordonSin 0:0ed2a7c7190c 226 #if LWIP_ARP
GordonSin 0:0ed2a7c7190c 227 sys_timeout(ARP_TMR_INTERVAL, arp_timer, NULL);
GordonSin 0:0ed2a7c7190c 228 #endif /* LWIP_ARP */
GordonSin 0:0ed2a7c7190c 229 #if LWIP_DHCP
GordonSin 0:0ed2a7c7190c 230 sys_timeout(DHCP_COARSE_TIMER_MSECS, dhcp_timer_coarse, NULL);
GordonSin 0:0ed2a7c7190c 231 sys_timeout(DHCP_FINE_TIMER_MSECS, dhcp_timer_fine, NULL);
GordonSin 0:0ed2a7c7190c 232 #endif /* LWIP_DHCP */
GordonSin 0:0ed2a7c7190c 233 #if LWIP_AUTOIP
GordonSin 0:0ed2a7c7190c 234 sys_timeout(AUTOIP_TMR_INTERVAL, autoip_timer, NULL);
GordonSin 0:0ed2a7c7190c 235 #endif /* LWIP_AUTOIP */
GordonSin 0:0ed2a7c7190c 236 #if LWIP_IGMP
GordonSin 0:0ed2a7c7190c 237 sys_timeout(IGMP_TMR_INTERVAL, igmp_timer, NULL);
GordonSin 0:0ed2a7c7190c 238 #endif /* LWIP_IGMP */
GordonSin 0:0ed2a7c7190c 239 #if LWIP_DNS
GordonSin 0:0ed2a7c7190c 240 sys_timeout(DNS_TMR_INTERVAL, dns_timer, NULL);
GordonSin 0:0ed2a7c7190c 241 #endif /* LWIP_DNS */
GordonSin 0:0ed2a7c7190c 242
GordonSin 0:0ed2a7c7190c 243 #if NO_SYS
GordonSin 0:0ed2a7c7190c 244 /* Initialise timestamp for sys_check_timeouts */
GordonSin 0:0ed2a7c7190c 245 timeouts_last_time = sys_now();
GordonSin 0:0ed2a7c7190c 246 #endif
GordonSin 0:0ed2a7c7190c 247 }
GordonSin 0:0ed2a7c7190c 248
GordonSin 0:0ed2a7c7190c 249 /**
GordonSin 0:0ed2a7c7190c 250 * Create a one-shot timer (aka timeout). Timeouts are processed in the
GordonSin 0:0ed2a7c7190c 251 * following cases:
GordonSin 0:0ed2a7c7190c 252 * - while waiting for a message using sys_timeouts_mbox_fetch()
GordonSin 0:0ed2a7c7190c 253 * - by calling sys_check_timeouts() (NO_SYS==1 only)
GordonSin 0:0ed2a7c7190c 254 *
GordonSin 0:0ed2a7c7190c 255 * @param msecs time in milliseconds after that the timer should expire
GordonSin 0:0ed2a7c7190c 256 * @param handler callback function to call when msecs have elapsed
GordonSin 0:0ed2a7c7190c 257 * @param arg argument to pass to the callback function
GordonSin 0:0ed2a7c7190c 258 */
GordonSin 0:0ed2a7c7190c 259 #if LWIP_DEBUG_TIMERNAMES
GordonSin 0:0ed2a7c7190c 260 void
GordonSin 0:0ed2a7c7190c 261 sys_timeout_debug(u32_t msecs, sys_timeout_handler handler, void *arg, const char* handler_name)
GordonSin 0:0ed2a7c7190c 262 #else /* LWIP_DEBUG_TIMERNAMES */
GordonSin 0:0ed2a7c7190c 263 void
GordonSin 0:0ed2a7c7190c 264 sys_timeout(u32_t msecs, sys_timeout_handler handler, void *arg)
GordonSin 0:0ed2a7c7190c 265 #endif /* LWIP_DEBUG_TIMERNAMES */
GordonSin 0:0ed2a7c7190c 266 {
GordonSin 0:0ed2a7c7190c 267 struct sys_timeo *timeout, *t;
GordonSin 0:0ed2a7c7190c 268
GordonSin 0:0ed2a7c7190c 269 timeout = (struct sys_timeo *)memp_malloc(MEMP_SYS_TIMEOUT);
GordonSin 0:0ed2a7c7190c 270 if (timeout == NULL) {
GordonSin 0:0ed2a7c7190c 271 LWIP_ASSERT("sys_timeout: timeout != NULL, pool MEMP_SYS_TIMEOUT is empty", timeout != NULL);
GordonSin 0:0ed2a7c7190c 272 return;
GordonSin 0:0ed2a7c7190c 273 }
GordonSin 0:0ed2a7c7190c 274 timeout->next = NULL;
GordonSin 0:0ed2a7c7190c 275 timeout->h = handler;
GordonSin 0:0ed2a7c7190c 276 timeout->arg = arg;
GordonSin 0:0ed2a7c7190c 277 timeout->time = msecs;
GordonSin 0:0ed2a7c7190c 278 #if LWIP_DEBUG_TIMERNAMES
GordonSin 0:0ed2a7c7190c 279 timeout->handler_name = handler_name;
GordonSin 0:0ed2a7c7190c 280 LWIP_DEBUGF(TIMERS_DEBUG, ("sys_timeout: %p msecs=%"U32_F" handler=%s arg=%p\n",
GordonSin 0:0ed2a7c7190c 281 (void *)timeout, msecs, handler_name, (void *)arg));
GordonSin 0:0ed2a7c7190c 282 #endif /* LWIP_DEBUG_TIMERNAMES */
GordonSin 0:0ed2a7c7190c 283
GordonSin 0:0ed2a7c7190c 284 if (next_timeout == NULL) {
GordonSin 0:0ed2a7c7190c 285 next_timeout = timeout;
GordonSin 0:0ed2a7c7190c 286 return;
GordonSin 0:0ed2a7c7190c 287 }
GordonSin 0:0ed2a7c7190c 288
GordonSin 0:0ed2a7c7190c 289 if (next_timeout->time > msecs) {
GordonSin 0:0ed2a7c7190c 290 next_timeout->time -= msecs;
GordonSin 0:0ed2a7c7190c 291 timeout->next = next_timeout;
GordonSin 0:0ed2a7c7190c 292 next_timeout = timeout;
GordonSin 0:0ed2a7c7190c 293 } else {
GordonSin 0:0ed2a7c7190c 294 for(t = next_timeout; t != NULL; t = t->next) {
GordonSin 0:0ed2a7c7190c 295 timeout->time -= t->time;
GordonSin 0:0ed2a7c7190c 296 if (t->next == NULL || t->next->time > timeout->time) {
GordonSin 0:0ed2a7c7190c 297 if (t->next != NULL) {
GordonSin 0:0ed2a7c7190c 298 t->next->time -= timeout->time;
GordonSin 0:0ed2a7c7190c 299 }
GordonSin 0:0ed2a7c7190c 300 timeout->next = t->next;
GordonSin 0:0ed2a7c7190c 301 t->next = timeout;
GordonSin 0:0ed2a7c7190c 302 break;
GordonSin 0:0ed2a7c7190c 303 }
GordonSin 0:0ed2a7c7190c 304 }
GordonSin 0:0ed2a7c7190c 305 }
GordonSin 0:0ed2a7c7190c 306 }
GordonSin 0:0ed2a7c7190c 307
GordonSin 0:0ed2a7c7190c 308 /**
GordonSin 0:0ed2a7c7190c 309 * Go through timeout list (for this task only) and remove the first matching
GordonSin 0:0ed2a7c7190c 310 * entry, even though the timeout has not triggered yet.
GordonSin 0:0ed2a7c7190c 311 *
GordonSin 0:0ed2a7c7190c 312 * @note This function only works as expected if there is only one timeout
GordonSin 0:0ed2a7c7190c 313 * calling 'handler' in the list of timeouts.
GordonSin 0:0ed2a7c7190c 314 *
GordonSin 0:0ed2a7c7190c 315 * @param handler callback function that would be called by the timeout
GordonSin 0:0ed2a7c7190c 316 * @param arg callback argument that would be passed to handler
GordonSin 0:0ed2a7c7190c 317 */
GordonSin 0:0ed2a7c7190c 318 void
GordonSin 0:0ed2a7c7190c 319 sys_untimeout(sys_timeout_handler handler, void *arg)
GordonSin 0:0ed2a7c7190c 320 {
GordonSin 0:0ed2a7c7190c 321 struct sys_timeo *prev_t, *t;
GordonSin 0:0ed2a7c7190c 322
GordonSin 0:0ed2a7c7190c 323 if (next_timeout == NULL) {
GordonSin 0:0ed2a7c7190c 324 return;
GordonSin 0:0ed2a7c7190c 325 }
GordonSin 0:0ed2a7c7190c 326
GordonSin 0:0ed2a7c7190c 327 for (t = next_timeout, prev_t = NULL; t != NULL; prev_t = t, t = t->next) {
GordonSin 0:0ed2a7c7190c 328 if ((t->h == handler) && (t->arg == arg)) {
GordonSin 0:0ed2a7c7190c 329 /* We have a match */
GordonSin 0:0ed2a7c7190c 330 /* Unlink from previous in list */
GordonSin 0:0ed2a7c7190c 331 if (prev_t == NULL) {
GordonSin 0:0ed2a7c7190c 332 next_timeout = t->next;
GordonSin 0:0ed2a7c7190c 333 } else {
GordonSin 0:0ed2a7c7190c 334 prev_t->next = t->next;
GordonSin 0:0ed2a7c7190c 335 }
GordonSin 0:0ed2a7c7190c 336 /* If not the last one, add time of this one back to next */
GordonSin 0:0ed2a7c7190c 337 if (t->next != NULL) {
GordonSin 0:0ed2a7c7190c 338 t->next->time += t->time;
GordonSin 0:0ed2a7c7190c 339 }
GordonSin 0:0ed2a7c7190c 340 memp_free(MEMP_SYS_TIMEOUT, t);
GordonSin 0:0ed2a7c7190c 341 return;
GordonSin 0:0ed2a7c7190c 342 }
GordonSin 0:0ed2a7c7190c 343 }
GordonSin 0:0ed2a7c7190c 344 return;
GordonSin 0:0ed2a7c7190c 345 }
GordonSin 0:0ed2a7c7190c 346
GordonSin 0:0ed2a7c7190c 347 #if NO_SYS
GordonSin 0:0ed2a7c7190c 348
GordonSin 0:0ed2a7c7190c 349 /** Handle timeouts for NO_SYS==1 (i.e. without using
GordonSin 0:0ed2a7c7190c 350 * tcpip_thread/sys_timeouts_mbox_fetch(). Uses sys_now() to call timeout
GordonSin 0:0ed2a7c7190c 351 * handler functions when timeouts expire.
GordonSin 0:0ed2a7c7190c 352 *
GordonSin 0:0ed2a7c7190c 353 * Must be called periodically from your main loop.
GordonSin 0:0ed2a7c7190c 354 */
GordonSin 0:0ed2a7c7190c 355 void
GordonSin 0:0ed2a7c7190c 356 sys_check_timeouts(void)
GordonSin 0:0ed2a7c7190c 357 {
GordonSin 0:0ed2a7c7190c 358 struct sys_timeo *tmptimeout;
GordonSin 0:0ed2a7c7190c 359 u32_t diff;
GordonSin 0:0ed2a7c7190c 360 sys_timeout_handler handler;
GordonSin 0:0ed2a7c7190c 361 void *arg;
GordonSin 0:0ed2a7c7190c 362 int had_one;
GordonSin 0:0ed2a7c7190c 363 u32_t now;
GordonSin 0:0ed2a7c7190c 364
GordonSin 0:0ed2a7c7190c 365 now = sys_now();
GordonSin 0:0ed2a7c7190c 366 if (next_timeout) {
GordonSin 0:0ed2a7c7190c 367 /* this cares for wraparounds */
GordonSin 0:0ed2a7c7190c 368 diff = LWIP_U32_DIFF(now, timeouts_last_time);
GordonSin 0:0ed2a7c7190c 369 do
GordonSin 0:0ed2a7c7190c 370 {
GordonSin 0:0ed2a7c7190c 371 had_one = 0;
GordonSin 0:0ed2a7c7190c 372 tmptimeout = next_timeout;
GordonSin 0:0ed2a7c7190c 373 if (tmptimeout->time <= diff) {
GordonSin 0:0ed2a7c7190c 374 /* timeout has expired */
GordonSin 0:0ed2a7c7190c 375 had_one = 1;
GordonSin 0:0ed2a7c7190c 376 timeouts_last_time = now;
GordonSin 0:0ed2a7c7190c 377 diff -= tmptimeout->time;
GordonSin 0:0ed2a7c7190c 378 next_timeout = tmptimeout->next;
GordonSin 0:0ed2a7c7190c 379 handler = tmptimeout->h;
GordonSin 0:0ed2a7c7190c 380 arg = tmptimeout->arg;
GordonSin 0:0ed2a7c7190c 381 #if LWIP_DEBUG_TIMERNAMES
GordonSin 0:0ed2a7c7190c 382 if (handler != NULL) {
GordonSin 0:0ed2a7c7190c 383 LWIP_DEBUGF(TIMERS_DEBUG, ("sct calling h=%s arg=%p\n",
GordonSin 0:0ed2a7c7190c 384 tmptimeout->handler_name, arg));
GordonSin 0:0ed2a7c7190c 385 }
GordonSin 0:0ed2a7c7190c 386 #endif /* LWIP_DEBUG_TIMERNAMES */
GordonSin 0:0ed2a7c7190c 387 memp_free(MEMP_SYS_TIMEOUT, tmptimeout);
GordonSin 0:0ed2a7c7190c 388 if (handler != NULL) {
GordonSin 0:0ed2a7c7190c 389 handler(arg);
GordonSin 0:0ed2a7c7190c 390 }
GordonSin 0:0ed2a7c7190c 391 }
GordonSin 0:0ed2a7c7190c 392 /* repeat until all expired timers have been called */
GordonSin 0:0ed2a7c7190c 393 }while(had_one);
GordonSin 0:0ed2a7c7190c 394 }
GordonSin 0:0ed2a7c7190c 395 }
GordonSin 0:0ed2a7c7190c 396
GordonSin 0:0ed2a7c7190c 397 /** Set back the timestamp of the last call to sys_check_timeouts()
GordonSin 0:0ed2a7c7190c 398 * This is necessary if sys_check_timeouts() hasn't been called for a long
GordonSin 0:0ed2a7c7190c 399 * time (e.g. while saving energy) to prevent all timer functions of that
GordonSin 0:0ed2a7c7190c 400 * period being called.
GordonSin 0:0ed2a7c7190c 401 */
GordonSin 0:0ed2a7c7190c 402 void
GordonSin 0:0ed2a7c7190c 403 sys_restart_timeouts(void)
GordonSin 0:0ed2a7c7190c 404 {
GordonSin 0:0ed2a7c7190c 405 timeouts_last_time = sys_now();
GordonSin 0:0ed2a7c7190c 406 }
GordonSin 0:0ed2a7c7190c 407
GordonSin 0:0ed2a7c7190c 408 #else /* NO_SYS */
GordonSin 0:0ed2a7c7190c 409
GordonSin 0:0ed2a7c7190c 410 /**
GordonSin 0:0ed2a7c7190c 411 * Wait (forever) for a message to arrive in an mbox.
GordonSin 0:0ed2a7c7190c 412 * While waiting, timeouts are processed.
GordonSin 0:0ed2a7c7190c 413 *
GordonSin 0:0ed2a7c7190c 414 * @param mbox the mbox to fetch the message from
GordonSin 0:0ed2a7c7190c 415 * @param msg the place to store the message
GordonSin 0:0ed2a7c7190c 416 */
GordonSin 0:0ed2a7c7190c 417 void
GordonSin 0:0ed2a7c7190c 418 sys_timeouts_mbox_fetch(sys_mbox_t *mbox, void **msg)
GordonSin 0:0ed2a7c7190c 419 {
GordonSin 0:0ed2a7c7190c 420 u32_t time_needed;
GordonSin 0:0ed2a7c7190c 421 struct sys_timeo *tmptimeout;
GordonSin 0:0ed2a7c7190c 422 sys_timeout_handler handler;
GordonSin 0:0ed2a7c7190c 423 void *arg;
GordonSin 0:0ed2a7c7190c 424
GordonSin 0:0ed2a7c7190c 425 again:
GordonSin 0:0ed2a7c7190c 426 if (!next_timeout) {
GordonSin 0:0ed2a7c7190c 427 time_needed = sys_arch_mbox_fetch(mbox, msg, 0);
GordonSin 0:0ed2a7c7190c 428 } else {
GordonSin 0:0ed2a7c7190c 429 if (next_timeout->time > 0) {
GordonSin 0:0ed2a7c7190c 430 time_needed = sys_arch_mbox_fetch(mbox, msg, next_timeout->time);
GordonSin 0:0ed2a7c7190c 431 } else {
GordonSin 0:0ed2a7c7190c 432 time_needed = SYS_ARCH_TIMEOUT;
GordonSin 0:0ed2a7c7190c 433 }
GordonSin 0:0ed2a7c7190c 434
GordonSin 0:0ed2a7c7190c 435 if (time_needed == SYS_ARCH_TIMEOUT) {
GordonSin 0:0ed2a7c7190c 436 /* If time == SYS_ARCH_TIMEOUT, a timeout occured before a message
GordonSin 0:0ed2a7c7190c 437 could be fetched. We should now call the timeout handler and
GordonSin 0:0ed2a7c7190c 438 deallocate the memory allocated for the timeout. */
GordonSin 0:0ed2a7c7190c 439 tmptimeout = next_timeout;
GordonSin 0:0ed2a7c7190c 440 next_timeout = tmptimeout->next;
GordonSin 0:0ed2a7c7190c 441 handler = tmptimeout->h;
GordonSin 0:0ed2a7c7190c 442 arg = tmptimeout->arg;
GordonSin 0:0ed2a7c7190c 443 #if LWIP_DEBUG_TIMERNAMES
GordonSin 0:0ed2a7c7190c 444 if (handler != NULL) {
GordonSin 0:0ed2a7c7190c 445 LWIP_DEBUGF(TIMERS_DEBUG, ("stmf calling h=%s arg=%p\n",
GordonSin 0:0ed2a7c7190c 446 tmptimeout->handler_name, arg));
GordonSin 0:0ed2a7c7190c 447 }
GordonSin 0:0ed2a7c7190c 448 #endif /* LWIP_DEBUG_TIMERNAMES */
GordonSin 0:0ed2a7c7190c 449 memp_free(MEMP_SYS_TIMEOUT, tmptimeout);
GordonSin 0:0ed2a7c7190c 450 if (handler != NULL) {
GordonSin 0:0ed2a7c7190c 451 /* For LWIP_TCPIP_CORE_LOCKING, lock the core before calling the
GordonSin 0:0ed2a7c7190c 452 timeout handler function. */
GordonSin 0:0ed2a7c7190c 453 LOCK_TCPIP_CORE();
GordonSin 0:0ed2a7c7190c 454 handler(arg);
GordonSin 0:0ed2a7c7190c 455 UNLOCK_TCPIP_CORE();
GordonSin 0:0ed2a7c7190c 456 }
GordonSin 0:0ed2a7c7190c 457 LWIP_TCPIP_THREAD_ALIVE();
GordonSin 0:0ed2a7c7190c 458
GordonSin 0:0ed2a7c7190c 459 /* We try again to fetch a message from the mbox. */
GordonSin 0:0ed2a7c7190c 460 goto again;
GordonSin 0:0ed2a7c7190c 461 } else {
GordonSin 0:0ed2a7c7190c 462 /* If time != SYS_ARCH_TIMEOUT, a message was received before the timeout
GordonSin 0:0ed2a7c7190c 463 occured. The time variable is set to the number of
GordonSin 0:0ed2a7c7190c 464 milliseconds we waited for the message. */
GordonSin 0:0ed2a7c7190c 465 if (time_needed < next_timeout->time) {
GordonSin 0:0ed2a7c7190c 466 next_timeout->time -= time_needed;
GordonSin 0:0ed2a7c7190c 467 } else {
GordonSin 0:0ed2a7c7190c 468 next_timeout->time = 0;
GordonSin 0:0ed2a7c7190c 469 }
GordonSin 0:0ed2a7c7190c 470 }
GordonSin 0:0ed2a7c7190c 471 }
GordonSin 0:0ed2a7c7190c 472 }
GordonSin 0:0ed2a7c7190c 473
GordonSin 0:0ed2a7c7190c 474 #endif /* NO_SYS */
GordonSin 0:0ed2a7c7190c 475
GordonSin 0:0ed2a7c7190c 476 #else /* LWIP_TIMERS */
GordonSin 0:0ed2a7c7190c 477 /* Satisfy the TCP code which calls this function */
GordonSin 0:0ed2a7c7190c 478 void
GordonSin 0:0ed2a7c7190c 479 tcp_timer_needed(void)
GordonSin 0:0ed2a7c7190c 480 {
GordonSin 0:0ed2a7c7190c 481 }
GordonSin 0:0ed2a7c7190c 482 #endif /* LWIP_TIMERS */