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    fpNice

    Set process priority.

    Declaration

    Source position: bunxh.inc line 115

    function fpNice(N: cint) : cint;

    Description

    Nice adds -N to the priority of the running process. The lower the priority numerically, the less the process is favored. Only the superuser can specify a negative N, i.e. increase the rate at which the process is run.

    If the function is successful, zero is returned. On error, a nonzero value is returned.

    Errors

    Extended error information is returned by the FpGetErrno function.

    sys_eperm
    A non-superuser tried to specify a negative N, i.e. do a priority increase.

    See also

    Name Description
    FpGetPriority Return process priority.
    FpSetPriority Set process priority.

    Example

    Program Example15;

{ Program to demonstrate the Nice and Get/SetPriority functions. }

Uses BaseUnix,Unix;

begin
  writeln ('Setting priority to 5');
  fpsetpriority (prio_process,fpgetpid,5);
  writeln ('New priority = ',fpgetpriority (prio_process,fpgetpid));
  writeln ('Doing nice 10');
  fpnice (10);
  writeln ('New Priority = ',fpgetpriority (prio_process,fpgetpid));
end.