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with ada.calendar,
     ada.text_io;
procedure timeprot is

  protected type p_type is
    entry a(x: in integer);
    procedure b(x : in integer);
    function c(x : in integer) return integer;
  private
    p_dummy : integer := 0;
  end p_type;

  protected body p_type is
    entry a(x: in integer) when p_dummy = 0 is
    begin p_dummy := x;end a;
    procedure b(x : in integer) is
    begin p_dummy := x;end b;
    function c(x : in integer) return integer is
    begin return p_dummy+x;end c;
  end p_type;

  dummy : integer := 0;

  procedure a(x : in integer) is
  begin dummy := x;end a;
  procedure b(x : in integer) is
  begin dummy := x;end b;
  function c(x : in integer) return integer is
  begin return dummy+x;end c;

  procedure measure is
    use type ada.calendar.time;
    t0,t1 : ada.calendar.time;
    junk : integer;
  begin
    t0 := ada.calendar.clock;
    for i in 1 .. 1_000 loop
      a(i/3_000);  -- ensure that parameter to call = 0
    end loop;
    t1 := ada.calendar.clock;
    ada.text_io.put_line("a" & duration'image((t1-t0)*1000) & " mics");
    t0 := ada.calendar.clock;
    for i in 1 .. 1_000 loop
      b(i/3_000);
    end loop;
    t1 := ada.calendar.clock;
    ada.text_io.put_line("b" & duration'image((t1-t0)*1000) & " mics");
    t0 := ada.calendar.clock;
    for i in 1 .. 1_000 loop
      junk:=c(i/3_000);
    end loop;
    t1 := ada.calendar.clock;
    ada.text_io.put_line("c" & duration'image((t1-t0)*1000) & " mics");
  end measure;

  prot : p_type;

  procedure measure_p is
    use type ada.calendar.time;
    t0,t1 : ada.calendar.time;
    junk : integer;
  begin
    t0 := ada.calendar.clock;
    for i in 1 .. 1_000 loop
      prot.a(i/3_000);
    end loop;
    t1 := ada.calendar.clock;
    ada.text_io.put_line("prot.a" & duration'image((t1-t0)*1000) & " mics");
    t0 := ada.calendar.clock;
    for i in 1 .. 1_000 loop
      prot.b(i/3_000);
    end loop;
    t1 := ada.calendar.clock;
    ada.text_io.put_line("prot.b" & duration'image((t1-t0)*1000) & " mics");
    t0 := ada.calendar.clock;
    for i in 1 .. 1_000 loop
      junk:=prot.c(i/3_000);
    end loop;
    t1 := ada.calendar.clock;
    ada.text_io.put_line("prot.c" & duration'image((t1-t0)*1000) & " mics");
  end measure_p;

begin
  measure;
  measure_p;
  measure;
  measure_p;
end timeprot;