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158 | ------------------------------------------------------------------------------
-- --
-- GNAT RUN-TIME COMPONENTS --
-- --
-- A D A . E X E C U T I O N _ T I M E --
-- --
-- B o d y --
-- --
-- Copyright (C) 2007-2023, Free Software Foundation, Inc. --
-- --
-- GNAT is free software; you can redistribute it and/or modify it under --
-- terms of the GNU General Public License as published by the Free Soft- --
-- ware Foundation; either version 3, or (at your option) any later ver- --
-- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
-- or FITNESS FOR A PARTICULAR PURPOSE. --
-- --
-- As a special exception under Section 7 of GPL version 3, you are granted --
-- additional permissions described in the GCC Runtime Library Exception, --
-- version 3.1, as published by the Free Software Foundation. --
-- --
-- You should have received a copy of the GNU General Public License and --
-- a copy of the GCC Runtime Library Exception along with this program; --
-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
-- <http://www.gnu.org/licenses/>. --
-- --
-- GNAT was originally developed by the GNAT team at New York University. --
-- Extensive contributions were provided by Ada Core Technologies Inc. --
-- --
------------------------------------------------------------------------------
-- This is the Bare Board version of this package
with Ada.Task_Identification; use Ada.Task_Identification;
with Ada.Unchecked_Conversion;
with System.Tasking;
with System.Task_Primitives.Operations;
with System.BB.Execution_Time;
with System.BB.Time;
with System.BB.Threads;
package body Ada.Execution_Time is
package BB_Exec_Time renames System.BB.Execution_Time;
function To_CPU_Time is new Ada.Unchecked_Conversion
(System.BB.Time.Time, CPU_Time);
-- Function to change the view from System.BB.Time.Time (unsigned 64-bit)
-- to CPU_Time (unsigned 64-bit).
--
-- CPU_Time is derived from Ada.Real_Time.Time which is derived from
-- System.BB.Time.Time. So CPU_Time and System.BB.Time.Time are the same
-- type, but Ada.Real_Time.Time is private so we don't have visibility.
---------
-- "+" --
---------
function "+"
(Left : CPU_Time;
Right : Ada.Real_Time.Time_Span) return CPU_Time
is
use type Ada.Real_Time.Time;
begin
return CPU_Time (Ada.Real_Time.Time (Left) + Right);
end "+";
function "+"
(Left : Ada.Real_Time.Time_Span;
Right : CPU_Time) return CPU_Time
is
use type Ada.Real_Time.Time;
begin
return CPU_Time (Left + Ada.Real_Time.Time (Right));
end "+";
---------
-- "-" --
---------
function "-"
(Left : CPU_Time;
Right : Ada.Real_Time.Time_Span) return CPU_Time
is
use type Ada.Real_Time.Time;
begin
return CPU_Time (Ada.Real_Time.Time (Left) - Right);
end "-";
function "-"
(Left : CPU_Time;
Right : CPU_Time) return Ada.Real_Time.Time_Span
is
use type Ada.Real_Time.Time;
begin
return (Ada.Real_Time.Time (Left) - Ada.Real_Time.Time (Right));
end "-";
-----------
-- Clock --
-----------
function Clock
(T : Ada.Task_Identification.Task_Id :=
Ada.Task_Identification.Current_Task) return CPU_Time
is
function To_Task_Id is new Ada.Unchecked_Conversion
(Ada.Task_Identification.Task_Id, System.Tasking.Task_Id);
Th : System.BB.Threads.Thread_Id;
begin
if T = Ada.Task_Identification.Null_Task_Id then
raise Program_Error;
end if;
Th := System.Task_Primitives.Operations.Get_Thread_Id (To_Task_Id (T));
return To_CPU_Time (BB_Exec_Time.Thread_Clock (Th));
end Clock;
-----------
-- Split --
-----------
procedure Split
(T : CPU_Time;
SC : out Ada.Real_Time.Seconds_Count;
TS : out Ada.Real_Time.Time_Span)
is
begin
Ada.Real_Time.Split (Ada.Real_Time.Time (T), SC, TS);
end Split;
-------------
-- Time_Of --
-------------
function Time_Of
(SC : Ada.Real_Time.Seconds_Count;
TS : Ada.Real_Time.Time_Span := Ada.Real_Time.Time_Span_Zero)
return CPU_Time
is
begin
return CPU_Time (Ada.Real_Time.Time_Of (SC, TS));
end Time_Of;
--------------------------
-- Clock_For_Interrupts --
--------------------------
function Clock_For_Interrupts return CPU_Time is
begin
return To_CPU_Time (BB_Exec_Time.Global_Interrupt_Clock);
end Clock_For_Interrupts;
end Ada.Execution_Time;
|