Re: gtk and system

[Kent Schumacher <kent structural-wood com>]

Matt Eisemann wrote:
> 
> This may not be a gtk problem, but let me explain my problem.  I have an
> GTK+ application which starts processes using fork and execle, which works
> great.  I save the process id (pid) of that process .  Later on, a user
> pushes a button called 'stop tasks' and when called it concatenates the
> 'kill' command with the saved pid.  Below is some basic code.
> When I try to kill the processes I started the system command does not
> return an error code but the process consistently goes into a <defunct>
> mode instead of dying.  However, when I leave my GTK+ application, the
> <defunct> process does die.  But why not immediately.  Is this a gtk
> problem, or a UNIX limitation or is the fact that I started the processes
> with the GTK application cause some sort of a parent - child relationship.
>  Thanks ahead of time for your help.
> 
> sprintf(process_id,"%d",tasks->task_list[row].process_id);
> strcpy(executable,"kill -9 ");
> strcat(executable,process_id);
> 
>   system(process_id);
> 
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I am assuming this is on a unix or linux system.  There is
an explicit kill call that does not require the system call.
Try man 2 kill.