只能起一个进程 LINUX

/*
 * main.cpp
 *
 *  Created on: Feb 9, 2010
 *      Author: weiyu wang
 */

#include <signal.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <semaphore.h>
#include <fcntl.h>

#include "awtools.h"
#include "awlogger.h"
#include "qmcontroller.h"

using namespace std;
using namespace AWTookit;

sem_t* sem;

void sig_proc(int sig)
{
    signal(SIGINT, SIG_DFL);

    AWLOG_INFO("Ctrl + C, quit controller ......");

    sem_post(sem);

    exit(0);
}

int main(int argc, char** argv) {

    signal(SIGINT, sig_proc);

    AWLOG_INIT("qmcontroller");

    sem = sem_open("qmanager", O_CREAT, 0644, 1);

    if (-1 == sem_trywait(sem))
        return 0;

    controller().run();

    sem_post(sem);

    return 0;
}