Four Js Development Tools Forum

Hello,

If Programs running in container Mode I can check if there are running childs of the container before stopping the Parent-Program
(IF ui.Interface.getChildCount()>0 THEN    …)

That’s OK and works fine.

Is the a way to check the same, without running the Program in Container-Mode ?

In our case the user has first to Close all Programs before closing our Menu-Program.

(We don’t want to check running processes on the Server-Side or set those Information in a database table)

Thanks in Advance.

Kind regards


Stefan Serwe

Interesting question... I have two similar cases, in one of them i need to check if the program is already running, because users must only run one instance of the program. In the other case, i run multiple instances of a program for performance propose (each instance connect to one of multiple servers to run some querys) and i need to control the amount of instances to avoid a overload.

In both cases i check the processes on the server side using the "ps -ef" Linux command, but will be better to have a built-in command to check this.

Hi Stefan, Hi Anderson,

Since each process is independent, there is no easy solution and there is no existing frontcall achieving this on the client side.

The only suggestion I have is to add a popup menu when closing your menu application for asking user to check that other programs are correctly closed and that he really wants to quit.

Best regards,
Lionel 

Well, in that case i will leave my contribution with the function we use here to count running instances of a given program, using a Linux command...

You basically do a ps -ef and grep the program name, read the response and discard lines with the program name that don't actually indicate that the program is running. Replace <program name> with the name of the program you want to count.

private function count()
 
    define l_command    string
    define l_line       string
    define ch           base.Channel
    define l_count      smallint
    define l_aux        string
 
    let l_count = 0
    let ch = base.Channel.create()
 
    let l_command = 'ps -ef | grep <program name>'
 
    call ch.openPipe(l_command, "r")
 
    while ch.read(l_line)
 
        if   l_line.getIndexOf("gsproxy-bin",1) > 0 or
             l_line.getIndexOf(l_aux,1) > 0 or
             l_line.getIndexOf("sh -c ps -ef",1) > 0 or
             l_line.getIndexOf("grep <program name>",1) > 0
          then
             continue while
        end if
 
        let l_count = l_count + 1
 
    end while
 
    call ch.close()
 
    return l_count
 
end function