296 lines
7.2 KiB
C
296 lines
7.2 KiB
C
/*
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* Copyright (c) 2004, Swedish Institute of Computer Science.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* This file is part of the Contiki operating system.
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*
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* Author: Adam Dunkels <adam@sics.se>
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*
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* $Id: main.c,v 1.12 2008/05/14 19:22:58 adamdunkels Exp $
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*/
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/**
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* \file
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* This file implements the main function of the Contiki distributed
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* sensor network simulation environment.
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* \author Adam Dunkels <adam@sics.se>
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*
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* When starting, each sensor node is created as its own process. The
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* sensor node processes communicates with the starting process using
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* named pipes. These pipes carry messages such as data packets and
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* configuration and statistics information requests.
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*/
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#include "contiki-net.h"
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#include "display.h"
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#include "contiki-main.h"
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#include "nodes.h"
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#include "ether.h"
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#include "node.h"
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#include "net/ethernode.h"
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#include <sys/types.h>
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#include <unistd.h>
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#include <signal.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <sys/wait.h>
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#include <arpa/inet.h>
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in_addr_t gwaddr;
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void netsim_init(void);
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static int main_process = 0;
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/*---------------------------------------------------------------------------*/
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static void
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sigchld_handler(int sig)
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{
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int status;
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pid_t pid;
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struct nodes_node *node;
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if(!main_process) {
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return;
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}
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pid = waitpid(-1, &status, WNOHANG);
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if(WIFSIGNALED(status) &&
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WTERMSIG(status) == SIGSEGV) {
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node = nodes_find_pid(pid);
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if(node == NULL) {
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printf("A Contiki node crashed, but it wasn't even started by the system. Something weird is going on!\n");
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} else {
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printf("Contiki node at (%d, %d) crashed - Segmentation fault\n",
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node->x, node->y);
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}
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}
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}
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/*---------------------------------------------------------------------------*/
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static void
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idle(void)
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{
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int events;
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do {
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ether_server_poll();
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display_tick();
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display_redraw();
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ether_tick();
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events = process_run();
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if(events > 0) {
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printf("events %d\n", events);
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}
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} while(events > 0);
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}
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/*---------------------------------------------------------------------------*/
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static int
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start_node(int x, int y, int b)
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{
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pid_t pid;
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struct timeval tv;
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static unsigned short port = NODES_PORTBASE;
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pid = fork();
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if(pid == 0) {
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/* This is the sensor process. */
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main_process = 0;
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/* Make standard output unbuffered. */
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setvbuf(stdout, (char *)NULL, _IONBF, 0);
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srand(getpid());
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tv.tv_sec = 0;
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tv.tv_usec = 1000 * (rand() % 1000);
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select(0, NULL, NULL, NULL, &tv);
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node_init(port - NODES_PORTBASE + 2, x, y, b);
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ethernode_init(port);
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contiki_main(b);
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/* NOTREACHED */
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}
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if(b) {
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nodes_base_node_port = port;
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}
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/* printf("Adding sensor %d at (%d,%d)\n", pid, x, y);*/
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main_process = 1;
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nodes_add(pid, x, y, port, port - NODES_PORTBASE + 2);
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++port;
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return port - NODES_PORTBASE + 1;
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}
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/*---------------------------------------------------------------------------*/
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int
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main_add_node(int x, int y)
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{
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return start_node(x, y, 0);
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}
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/*---------------------------------------------------------------------------*/
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void
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main_add_base(int x, int y)
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{
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start_node(x, y, 1);
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}
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/*---------------------------------------------------------------------------*/
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int
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main(int argc, char **argv)
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{
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#ifdef __CYGWIN__
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if(argc == 3 &&
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inet_addr(argv[1]) == INADDR_NONE &&
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inet_addr(argv[2]) == INADDR_NONE) {
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printf("usage: %s <ip addr of ethernet card to share> "
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"<ip addr of netsim gateway>\n", argv[0]);
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exit(1);
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} else if(argc >= 2) {
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gwaddr = inet_addr(argv[2]);
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}
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#endif /* __CYGWIN__ */
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/* system("ifconfig tap0 inet 192.168.250.1");*/
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/* system("route delete 172.16.0.0/16");
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system("route add 172.16.0.0/16 192.168.250.2");*/
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nodes_init();
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atexit(nodes_kill);
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atexit(ether_print_stats);
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netsim_init();
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ether_server_init();
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#if 0
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while(1) {
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ether_server_poll();
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ether_tick();
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process_run();
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usleep(100);
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}
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#endif /* 0 */
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#ifdef __CYGWIN__
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if(argc > 1 && (strcmp(argv[1], "-q") ||
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strcmp(argv[2], "-q") ||
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strcmp(argv[3], "-q")) == 0) {
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#else /* __CYGWIN__ */
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if(argc > 1 && strcmp(argv[1], "-q") == 0) {
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#endif /* __CYGWIN__ */
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display_init(idle, 50, 0);
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} else {
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display_init(idle, 50, 1);
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}
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display_redraw();
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signal(SIGCHLD, sigchld_handler);
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display_run();
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return 0;
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argv = argv;
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argc = argc;
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}
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/*-----------------------------------------------------------------------------------*/
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char *arg_alloc(char size) {return NULL;}
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void arg_init(void) {}
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void arg_free(char *arg) {}
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/*-----------------------------------------------------------------------------------*/
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char *shell_prompt_text = "sensor-router> ";
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/*-----------------------------------------------------------------------------------*/
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#include <sys/time.h>
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static signed long drift = 0;
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void
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clock_delay(unsigned int num)
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{
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struct timeval tv;
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tv.tv_sec = 0;
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tv.tv_usec = 100 * num;
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select(0, NULL, NULL, NULL, &tv);
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}
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void
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clock_set_time(clock_time_t time, clock_time_t ftime)
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{
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drift = time - node_time();
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}
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clock_time_t
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clock_time(void)
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{
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return drift + node_time();
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}
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/*-----------------------------------------------------------------------------------*/
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unsigned long
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clock_seconds(void)
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{
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return node_seconds();
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}
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/*-----------------------------------------------------------------------------------*/
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void
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uip_log(char *m)
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{
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uip_ipaddr_t addr;
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uip_gethostaddr(&addr);
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printf("uIP log at %d.%d.%d.%d: %s\n", uip_ipaddr_to_quad(&addr), m);
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fflush(NULL);
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}
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void
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configurator_send_config(uip_ipaddr_t *addr, unsigned long seconds)
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{
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printf("Configurator: address %d.%d.%d.%d, seconds %lu\n",
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uip_ipaddr_to_quad(addr), seconds);
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}
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void
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system_log(char *m)
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{
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printf("%s", m);
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}
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/*void tr1001_drv_set_slip_dump(int c)
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{
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}*/
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