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|
--
-- SPTEST / BODY
--
-- DESCRIPTION:
--
-- This package is the implementation of the Nanosecond test of the
-- Sample Test Suite.
--
-- DEPENDENCIES:
--
--
--
-- COPYRIGHT (c) 1989-2011.
-- On-Line Applications Research Corporation (OAR).
--
-- The license and distribution terms for this file may in
-- the file LICENSE in this distribution or at
-- http://www.rtems.com/license/LICENSE.
--
with Ada.Integer_Text_IO;
with Interfaces.C;
with RTEMS;
with RTEMS.Clock;
with Text_IO;
use type Interfaces.C.Long;
use type RTEMS.Time_T;
package body SPTEST is
Dummy_Variable : Natural := 0;
procedure Simple_Procedure is
begin
Dummy_Variable := Dummy_Variable + 1;
end Simple_Procedure;
procedure Subtract_Em (
Start : in RTEMS.Timespec;
Stop : in RTEMS.Timespec;
Result : out RTEMS.Timespec
) is
Nanoseconds_Per_Second : constant := 1000000000;
begin
if (Stop.TV_Nsec < Start.TV_Nsec) then
Result.TV_Sec := Stop.TV_Sec - Start.TV_Sec - 1;
Result.TV_Nsec :=
(Nanoseconds_Per_Second - Start.TV_Nsec) + Stop.TV_Nsec;
else
Result.TV_Sec := Stop.TV_Sec - Start.TV_Sec;
Result.TV_Nsec := Stop.TV_Nsec - Start.TV_Nsec;
end if;
end Subtract_Em;
--
-- INIT
--
procedure INIT (
ARGUMENT : in RTEMS.TASKS.ARGUMENT
) is
pragma Unreferenced(ARGUMENT);
Status : RTEMS.Status_Codes;
Start : RTEMS.Timespec;
Stop : RTEMS.Timespec;
Diff : RTEMS.Timespec;
Max : Integer;
begin
TEXT_IO.NEW_LINE( 2 );
TEXT_IO.PUT_LINE( "*** NANOSECOND CLOCK TEST ***" );
--
-- Iterate 10 times showing difference in TOD
--
TEXT_IO.PUT_LINE( "10 iterations of getting TOD NOT tested in Ada" );
--
-- Iterate 10 times showing difference in Uptime
--
TEXT_IO.NEW_LINE;
TEXT_IO.PUT_LINE( "10 iterations of getting Uptime" );
for Index in 1 .. 10 loop
RTEMS.Clock.Get_Uptime( Start, Status );
RTEMS.Clock.Get_Uptime( Stop, Status );
Subtract_Em( Start, Stop, Diff );
Ada.Integer_Text_IO.Put( Integer( Start.TV_Sec ), 1 );
Text_IO.Put( ":" );
Ada.Integer_Text_IO.Put( Integer( Start.TV_Nsec ), 9 );
Text_IO.Put( " " );
Ada.Integer_Text_IO.Put( Integer( Stop.TV_Sec ), 1 );
Text_IO.Put( ":" );
Ada.Integer_Text_IO.Put( Integer( Stop.TV_Nsec ), 9 );
Text_IO.Put( " --> " );
Ada.Integer_Text_IO.Put( Integer( Diff.TV_Sec ), 1 );
Text_IO.Put( ":" );
Ada.Integer_Text_IO.Put( Integer( Diff.TV_Nsec ), 9 );
Text_IO.New_Line;
end loop;
--
-- Iterate 10 times showing difference in Uptime with different counts
--
TEXT_IO.NEW_LINE;
TEXT_IO.PUT_LINE(
"10 iterations of getting Uptime with different loop values"
);
for Index in 1 .. 10 loop
Max := (Index * 10000);
RTEMS.Clock.Get_Uptime( Start, Status );
for j in 1 .. Max loop
Simple_Procedure;
end loop;
RTEMS.Clock.Get_Uptime( Stop, Status );
Subtract_Em( Start, Stop, Diff );
Text_IO.Put( "loop of " );
Ada.Integer_Text_IO.Put( Max, 6 );
Text_IO.Put( " " );
Ada.Integer_Text_IO.Put( Integer( Start.TV_Sec ), 1 );
Text_IO.Put( ":" );
Ada.Integer_Text_IO.Put( Integer( Start.TV_Nsec ), 9 );
Text_IO.Put( " " );
Ada.Integer_Text_IO.Put( Integer( Stop.TV_Sec ), 1 );
Text_IO.Put( ":" );
Ada.Integer_Text_IO.Put( Integer( Stop.TV_Nsec ), 9 );
Text_IO.Put( " --> " );
Ada.Integer_Text_IO.Put( Integer( Diff.TV_Sec ), 1 );
Text_IO.Put( ":" );
Ada.Integer_Text_IO.Put( Integer( Diff.TV_Nsec ), 9 );
Text_IO.New_Line;
end loop;
delay( 1.0 );
TEXT_IO.PUT_LINE( "*** END OF NANOSECOND CLOCK TEST ***" );
RTEMS.SHUTDOWN_EXECUTIVE( 0 );
end INIT;
end SPTEST;
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