proc_nice Change the priority of the current process boolproc_nice intpriority proc_nice changes the priority of the current process. If an errno occurs, like the user lacks permission to change the priority, an error of level E_WARNING is generated and &false; is returned. Otherwise, &true; is returned. proc_nice will only exist if your system has NICE capabilities. NICE conforms to: SVr4, SVID EXT, AT&T, X/OPEN, BSD 4.3. So, for example, proc_nice is not available in Windows. See also proc_open and proc_terminate.