NAME

       explain_setpriority_or_die - set program scheduling priority and report errors

SYNOPSIS

       #include <libexplain/setpriority.h>
       void explain_setpriority_or_die(int which, int who, int prio);
       int explain_setpriority_on_error(int which, int who, int prio);

DESCRIPTION

       The explain_setpriority_or_die function is used to call the setpriority(2) system call. On
       failure an explanation will be printed to stderr, obtained from the explain_setpriority(3)
       function, and then the process terminates by calling exit(EXIT_FAILURE).

       The  explain_setpriority_on_error function is used to call the setpriority(2) system call.
       On  failure  an   explanation   will   be   printed   to   stderr,   obtained   from   the
       explain_setpriority(3) function, but still returns to the caller.

       which   The which, exactly as to be passed to the setpriority(2) system call.

       who     The who, exactly as to be passed to the setpriority(2) system call.

       prio    The prio, exactly as to be passed to the setpriority(2) system call.

RETURN VALUE

       The  explain_setpriority_or_die  function  only returns on success, see setpriority(2) for
       more information. On failure, prints an explanation and exits, it does not return.

       The explain_setpriority_on_error function always returns the value return by  the  wrapped
       setpriority(2) system call.

EXAMPLE

       The explain_setpriority_or_die function is intended to be used in a fashion similar to the
       following example:
              explain_setpriority_or_die(which, who, prio);

SEE ALSO

       setpriority(2)
               set program scheduling priority

       explain_setpriority(3)
               explain setpriority(2) errors

       exit(2) terminate the calling process

COPYRIGHT

       libexplain version 1.4
       Copyright (C) 2013 Peter Miller

                                                                    explain_setpriority_or_die(3)