185 lines
3.8 KiB
C
185 lines
3.8 KiB
C
/*************************************************
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File name: cstamain.c
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Author: JianHui Zheng
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Version: 9:00:00
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Date: 2007-7-2
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Description:cstaCollector模块的main文件，该文件可以使模块独立运行
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调用外部函数
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void iptrans_init();
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void snmp_init(int port);
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调用csta.c文件函数
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void csta_init();
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History:
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No.
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Author
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Date
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Version
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Description
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*************************************************/
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#include <assert.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <stddef.h>
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#include "csta.h"
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static struct itimerval itimer, old_itimer;
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void onCstaCollectorTimer();
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void setCstaCollectorTimer();
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void setup_daemon(void);
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int timerCounter = 0;
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/*************************************************
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Function: // main
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Description: // main函数，可以使模块独立运行
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Calls: // iptrans_init; snmp_init; csta_init; setCstaCollectorTimer;
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Called By: // csta.c:csta_init;
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Table Accessed: //
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Table Updated: //
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Input: // int argc, char *argv[]
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Output: //
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Return: //
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Others: //
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*************************************************/
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int main(int argc, char *argv[])
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{
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char runMode;
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runMode = getopt(argc, argv, "d");
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//获取运行参数
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switch (runMode)
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{
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case 'd':
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setup_daemon();
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break;
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case '?':
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break;
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}
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//IP平台模块初始化
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fprintf(stderr, "\n Calling iptrans_init() \n");
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iptrans_init();
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//snmp模块初始化
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fprintf(stderr, "\n Calling snmp_init() \n");
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snmp_init(4957);
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//cstaCollector模块初始化
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fprintf(stderr, "\n Calling csta_init() \n");
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csta_init();
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//设定定时器
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setCstaCollectorTimer();
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while (1) {
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usleep(50);
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}
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return (1);
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}
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/*************************************************
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Function: // onCstaCollectorTimer
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Description: // 设定定时器函数
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Calls: // csta_timer;
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Called By: // setCstaCollectorTimer;
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Table Accessed: //
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Table Updated: //
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Input: // int argc; char *argv[];
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Output: //
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Return: //
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Others: //
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*************************************************/
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void onCstaCollectorTimer()
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{
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csta_timer();
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}
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/*************************************************
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Function: // setCstaCollectorTimer
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Description: // 开启定时器函数
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Calls: // setitimer;
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Called By: // main;
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Table Accessed: //
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Table Updated: //
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Input: //
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Output: //
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Return: //
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Others: //
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*************************************************/
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void setCstaCollectorTimer()
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{
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struct sigaction act;
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act.sa_handler = onCstaCollectorTimer;
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sigemptyset(&act.sa_mask);
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act.sa_flags = 0;
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if (sigaction(SIGALRM, &act, NULL) < 0) {
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perror("Produce Sigaction");
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exitLog("cstaCollector:setCstaCollectorTimer, sigaction function error");
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exit(1);
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}
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itimer.it_interval.tv_sec = 0;
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itimer.it_interval.tv_usec = 10 * 1000;
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itimer.it_value.tv_sec = 0;
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itimer.it_value.tv_usec = 10 * 1000;
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if (setitimer(ITIMER_REAL, &itimer, &old_itimer) != 0) {
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printf("Setting Timer error! \n");
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exitLog("cstaCollector:setCstaCollectorTimer, setitimer function error");
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exit(1);
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}
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}
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/*************************************************
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Function: // setup_daemon
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Description: // 将程序设为后台进程
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Calls: // fork;
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Called By: // main;
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Table Accessed: //
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Table Updated: //
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Input: //
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Output: //
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Return: //
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Others: //
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*************************************************/
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void setup_daemon(void)
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{
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//复制进程
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switch (fork())
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{
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case -1:
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{
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perror("setup_daemon(), 1st fork()");
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exit(2);
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}
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default:
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exit(0);
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case 0:
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if (setsid() == -1)
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{
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perror("setup_daemon(), setsid()");
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exit(3);
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}
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switch (fork())
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{
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case -1:
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{
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perror("setup_daemon(), 2nd fork()");
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exit(3);
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}
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default:
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exit(0);
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case 0:
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umask(0);
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/* and return with daemon set up */
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return;
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}
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}
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}
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