kill Fork

[cemflinux]

Sorry for my English.
I'm working with forks at a proxy.
And I'm going through some problems.
He starts with 10 instances and can reach a maximum of 100 instances.
So far so good.
The problem is to kill the processes created by the fork in which are no longer used.
Follow my code below, and the signals I'm sending.

Main:

    pid_t pid = getpid();

    int maxservers = 100;
    int servernumber = 10;

    int Instances = 0;
    int startchild = 0;
    int status;

      ProxyHandler Proxy;

    //Infinite Server Loop
    for(;;)
    {
        //Clean proxyhandler zombies
        while (waitpid(-1, &status, WNOHANG) > 0)
        {
            Instances--;
        }

        while ((startchild > 0) || (Instances < servernumber))
        {
            if ( (pid = fork()) < 0 ) //Fork Error
            {
                //Too many processes or out of memory?
                LogFile::ErrorMessage("Could not fork proxychild: %s\n", strerror(errno));

                //Lets hope the the causing error goes away soon
                sleep(10);
            }
            else if ( pid == 0 ) //Child
            {
                //Install ProxyHandler Signals
                if ( InstallSignal(1) < 0 )
                {
                    LogFile::ErrorMessage("Error installing ProxyHandler signals\n");
                    sleep(10);
                    exit(1);
                }

                //Start processing requests
                Proxy.Proxy( ProxyServer );

                exit(1);
            }
            else //Parent
            {
                if ( startchild > 0 ) startchild--;
                Instances++;
            }
        }

        //Do we need more proxy-processes?
        if ( Instances >= servernumber )
        {
            bool hangup = ProxyServer.CheckForData(0);
            sleep(1);

            if ( (hangup == true) && (Instances < maxservers) )
            {
                //Did a old process take care or is there still data? Create two if needed
                if ( ProxyServer.CheckForData(0) )
                {
                    if (LL>0) LogFile::ErrorMessage("All childs busy, spawning new (now: %d) - SERVERNUMBER might be too low\n", Instances+2);
                    startchild += 2;
                }
            }
        }
    }

Signals:

int InstallSignal( int level )
{
    struct sigaction Signal;
    memset(&Signal, 0, sizeof(Signal));
    Signal.sa_flags = 0;

    //Level 0 = Main CEV Process
    //Level 1 = ProxyHandler Process
    //Signals are inherited from previous level at forking..

    if ( level == 0 ) //Main CEV Process
    {
        Signal.sa_handler = ExitProcess;
        if (sigaction(SIGINT, &Signal, NULL) != 0) return -1;
        if (sigaction(SIGTERM, &Signal, NULL) != 0) return -1;

        Signal.sa_handler = RereadAll;
        if (sigaction(SIGHUP, &Signal, NULL) != 0) return -1;
        //Compatibility for 0.77 and older init-script
        if (sigaction(SIGUSR2, &Signal, NULL) != 0) return -1;

        Signal.sa_handler = ChildExited;
        if (sigaction(SIGCHLD, &Signal, NULL) != 0) return -1;

        Signal.sa_handler = SIG_IGN;
        if (sigaction(SIGUSR1, &Signal, NULL) != 0) return -1;
        if (sigaction(SIGPIPE, &Signal, NULL) != 0) return -1;
    }
    else if ( level == 1 ) //ProxyHandler Process
    {
        Signal.sa_handler = RestartChild;
        if (sigaction(SIGUSR1, &Signal, NULL) != 0) return -1;

        Signal.sa_handler = ChildChildExited;
        if (sigaction(SIGCHLD, &Signal, NULL) != 0) return -1;

        Signal.sa_handler = SIG_IGN;
        if (sigaction(SIGHUP, &Signal, NULL) != 0) return -1;
        if (sigaction(SIGUSR2, &Signal, NULL) != 0) return -1;
    }

    return 0;
}