include/adainclude/rtems-clock.adb

0001 -- SPDX-License-Identifier: BSD-2-Clause
0002
0003 --
0004 --  RTEMS / Body
0005 --
0006 --  DESCRIPTION:
0007 --
0008 --  This package provides the interface to the RTEMS API.
0009 --
0010 --
0011 --  DEPENDENCIES:
0012 --
0013 --
0014 --
0015 --  COPYRIGHT (c) 1997-2011.
0016 --  On-Line Applications Research Corporation (OAR).
0017 --
0018 --  Redistribution and use in source and binary forms, with or without
0019 --  modification, are permitted provided that the following conditions
0020 --  are met:
0021 --  1. Redistributions of source code must retain the above copyright
0022 --     notice, this list of conditions and the following disclaimer.
0023 --  2. Redistributions in binary form must reproduce the above copyright
0024 --     notice, this list of conditions and the following disclaimer in the
0025 --     documentation and/or other materials provided with the distribution.
0026 --
0027 --  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
0028 --  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
0029 --  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
0030 --  ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
0031 --  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
0032 --  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
0033 --  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
0034 --  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
0035 --  CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
0036 --  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
0037 --  POSSIBILITY OF SUCH DAMAGE.
0038 --
0039
0040 package body RTEMS.Clock is
0041
0042    --
0043    -- Clock Manager
0044    --
0045
0046    procedure Set
0047      (Time_Buffer : in RTEMS.Time_Of_Day;
0048       Result      : out RTEMS.Status_Codes)
0049    is
0050       function Set_Base
0051         (Time_Buffer : access RTEMS.Time_Of_Day)
0052          return        RTEMS.Status_Codes;
0053       pragma Import (C, Set_Base, "rtems_clock_set");
0054
0055       Tmp_Time : aliased RTEMS.Time_Of_Day;
0056    begin
0057
0058       Tmp_Time := Time_Buffer;
0059       Result   := Set_Base (Tmp_Time'Access);
0060
0061    end Set;
0062
0063    procedure Get_TOD
0064      (Time   : out RTEMS.Time_Of_Day;
0065       Result : out RTEMS.Status_Codes)
0066    is
0067       function Get_TOD_Base
0068         (Time : access RTEMS.Time_Of_Day)
0069          return RTEMS.Status_Codes;
0070       pragma Import (C, Get_TOD_Base, "rtems_clock_get_tod");
0071
0072       Tmp_Time : aliased RTEMS.Time_Of_Day;
0073    begin
0074       Result := Get_TOD_Base (Tmp_Time'Access);
0075       Time   := Tmp_Time;
0076    end Get_TOD;
0077
0078    procedure Get_TOD_Time_Value
0079      (Time   : out RTEMS.Time_Value;
0080       Result : out RTEMS.Status_Codes)
0081    is
0082       function Get_TOD_Time_Value_Base
0083         (Time : access RTEMS.Time_Value)
0084          return RTEMS.Status_Codes;
0085       pragma Import
0086         (C,
0087          Get_TOD_Time_Value_Base,
0088          "rtems_clock_get_tod_timeval");
0089
0090       Tmp_Time : aliased RTEMS.Time_Value;
0091    begin
0092       Result := Get_TOD_Time_Value_Base (Tmp_Time'Access);
0093       Time   := Tmp_Time;
0094    end Get_TOD_Time_Value;
0095
0096    procedure Get_Seconds_Since_Epoch
0097      (The_Interval : out RTEMS.Interval;
0098       Result       : out RTEMS.Status_Codes)
0099    is
0100       function Get_Seconds_Since_Epoch_Base
0101         (The_Interval : access RTEMS.Interval)
0102          return         RTEMS.Status_Codes;
0103       pragma Import
0104         (C,
0105          Get_Seconds_Since_Epoch_Base,
0106          "rtems_clock_get_seconds_since_epoch");
0107
0108       Tmp_Interval : aliased RTEMS.Interval;
0109    begin
0110       Result       :=
0111          Get_Seconds_Since_Epoch_Base (Tmp_Interval'Access);
0112       The_Interval := Tmp_Interval;
0113    end Get_Seconds_Since_Epoch;
0114
0115    -- Get_Ticks_Per_Second is in rtems.ads
0116
0117    -- Get_Ticks_Since_Boot is in rtems.ads
0118
0119    procedure Get_Uptime
0120      (Uptime : out RTEMS.Timespec;
0121       Result : out RTEMS.Status_Codes)
0122    is
0123       function Get_Uptime_Base
0124         (Uptime : access RTEMS.Timespec)
0125          return   RTEMS.Status_Codes;
0126       pragma Import (C, Get_Uptime_Base, "rtems_clock_get_uptime");
0127       Uptime_Base : aliased RTEMS.Timespec;
0128    begin
0129
0130       Result := Get_Uptime_Base (Uptime_Base'Access);
0131       Uptime := Uptime_Base;
0132
0133    end Get_Uptime;
0134
0135    procedure Tick (Result : out RTEMS.Status_Codes) is
0136       function Tick_Base return  RTEMS.Status_Codes;
0137       pragma Import (C, Tick_Base, "rtems_clock_tick");
0138    begin
0139
0140       Result := Tick_Base;
0141
0142    end Tick;
0143
0144    function Get_Ticks_Since_Boot
0145       return RTEMS.Interval
0146    is
0147       Watchdog_Ticks_since_boot : RTEMS.Interval;
0148       pragma Import (
0149          C,
0150          Watchdog_Ticks_since_boot,
0151          "_Watchdog_Ticks_since_boot"
0152       );
0153    begin
0154
0155       return Watchdog_Ticks_since_boot;
0156
0157    end Get_Ticks_Since_Boot;
0158
0159 end RTEMS.Clock;