RTEMS/Ada: Account for 64-bit time_t
The Newlib time_t has now 64 bits for RTEMS. gcc/ada * gcc-interface/Makefile.in (RTEMS): Use s-osprim.adb. * s-osprim-rtems.adb: New file. * s-osinte-rtems.adb (pthread_cond_t): Fix alignment. (pthread_mutexattr_t): Likewise. (pthread_rwlockattr_t): Likewise. (pthread_rwlock_t): Likewise. (time_t): Use 64-bit integer. From-SVN: r255381
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@ -1,3 +1,13 @@
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2017-12-04 Sebastian Huber <sebastian.huber@embedded-brains.de>
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* gcc-interface/Makefile.in (RTEMS): Use s-osprim.adb.
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* s-osprim-rtems.adb: New file.
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* s-osinte-rtems.adb (pthread_cond_t): Fix alignment.
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(pthread_mutexattr_t): Likewise.
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(pthread_rwlockattr_t): Likewise.
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(pthread_rwlock_t): Likewise.
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(time_t): Use 64-bit integer.
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2017-12-01 Sebastian Huber <sebastian.huber@embedded-brains.de>
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* s-osinte-rtems.ads (pthread_cond_t): Use correct size and
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@ -1726,7 +1726,7 @@ ifeq ($(strip $(filter-out rtems%,$(target_os))),)
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s-intman.adb<s-intman-posix.adb \
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s-osinte.adb<s-osinte-rtems.adb \
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s-osinte.ads<s-osinte-rtems.ads \
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s-osprim.adb<s-osprim-posix.adb \
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s-osprim.adb<s-osprim-rtems.adb \
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s-parame.adb<s-parame-rtems.adb \
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s-taprop.adb<s-taprop-posix.adb \
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s-taspri.ads<s-taspri-posix.ads \
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@ -620,7 +620,7 @@ private
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type pid_t is new int;
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type time_t is new long;
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type time_t is new Long_Long_Integer;
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type timespec is record
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tv_sec : time_t;
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@ -649,13 +649,13 @@ private
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Data : char_array (1 .. OS_Constants.PTHREAD_MUTEXATTR_SIZE);
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end record;
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pragma Convention (C, pthread_mutexattr_t);
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for pthread_mutexattr_t'Alignment use Interfaces.C.double'Alignment;
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for pthread_mutexattr_t'Alignment use Interfaces.C.int'Alignment;
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type pthread_rwlockattr_t is record
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Data : char_array (1 .. OS_Constants.PTHREAD_RWLOCKATTR_SIZE);
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end record;
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pragma Convention (C, pthread_rwlockattr_t);
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for pthread_rwlockattr_t'Alignment use Interfaces.C.double'Alignment;
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for pthread_rwlockattr_t'Alignment use Interfaces.C.int'Alignment;
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type pthread_t is new rtems_id;
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@ -669,13 +669,13 @@ private
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Data : char_array (1 .. OS_Constants.PTHREAD_RWLOCK_SIZE);
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end record;
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pragma Convention (C, pthread_rwlock_t);
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for pthread_rwlock_t'Alignment use Interfaces.C.double'Alignment;
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for pthread_rwlock_t'Alignment use Interfaces.C.size_t'Alignment;
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type pthread_cond_t is record
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Data : char_array (1 .. OS_Constants.PTHREAD_COND_SIZE);
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end record;
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pragma Convention (C, pthread_cond_t);
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for pthread_cond_t'Alignment use Interfaces.C.double'Alignment;
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for pthread_cond_t'Alignment use Interfaces.C.size_t'Alignment;
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type pthread_key_t is new rtems_id;
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@ -0,0 +1,172 @@
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------------------------------------------------------------------------------
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-- --
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-- GNAT RUN-TIME LIBRARY (GNARL) COMPONENTS --
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-- --
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-- S Y S T E M . O S _ P R I M I T I V E S --
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-- --
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-- B o d y --
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-- --
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-- Copyright (C) 1998-2015, Free Software Foundation, Inc. --
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-- --
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-- GNARL is free software; you can redistribute it and/or modify it under --
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-- terms of the GNU General Public License as published by the Free Soft- --
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-- ware Foundation; either version 3, or (at your option) any later ver- --
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-- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
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-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
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-- or FITNESS FOR A PARTICULAR PURPOSE. --
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-- --
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-- As a special exception under Section 7 of GPL version 3, you are granted --
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-- additional permissions described in the GCC Runtime Library Exception, --
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-- version 3.1, as published by the Free Software Foundation. --
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-- --
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-- You should have received a copy of the GNU General Public License and --
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-- a copy of the GCC Runtime Library Exception along with this program; --
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-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
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-- <http://www.gnu.org/licenses/>. --
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-- --
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-- GNARL was developed by the GNARL team at Florida State University. --
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-- Extensive contributions were provided by Ada Core Technologies, Inc. --
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-- --
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------------------------------------------------------------------------------
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-- This version is for POSIX-like operating systems
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package body System.OS_Primitives is
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-- ??? These definitions are duplicated from System.OS_Interface
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-- because we don't want to depend on any package. Consider removing
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-- these declarations in System.OS_Interface and move these ones in
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-- the spec.
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type time_t is new Long_Long_Integer;
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type timespec is record
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tv_sec : time_t;
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tv_nsec : Long_Integer;
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end record;
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pragma Convention (C, timespec);
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function nanosleep (rqtp, rmtp : not null access timespec) return Integer;
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pragma Import (C, nanosleep, "nanosleep");
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-----------
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-- Clock --
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-----------
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function Clock return Duration is
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type timeval is record
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tv_sec : time_t;
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tv_usec : Long_Integer;
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end record;
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pragma Convention (C, timeval);
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procedure timeval_to_duration
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(T : not null access timeval;
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sec : not null access Long_Long_Integer;
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usec : not null access Long_Integer);
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pragma Import (C, timeval_to_duration, "__gnat_timeval_to_duration");
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Micro : constant := 10**6;
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sec : aliased Long_Long_Integer;
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usec : aliased Long_Integer;
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TV : aliased timeval;
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Result : Integer;
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pragma Unreferenced (Result);
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function gettimeofday
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(Tv : access timeval;
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Tz : System.Address := System.Null_Address) return Integer;
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pragma Import (C, gettimeofday, "gettimeofday");
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begin
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-- The return codes for gettimeofday are as follows (from man pages):
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-- EPERM settimeofday is called by someone other than the superuser
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-- EINVAL Timezone (or something else) is invalid
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-- EFAULT One of tv or tz pointed outside accessible address space
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-- None of these codes signal a potential clock skew, hence the return
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-- value is never checked.
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Result := gettimeofday (TV'Access, System.Null_Address);
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timeval_to_duration (TV'Access, sec'Access, usec'Access);
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return Duration (sec) + Duration (usec) / Micro;
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end Clock;
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-----------------
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-- To_Timespec --
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-----------------
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function To_Timespec (D : Duration) return timespec;
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function To_Timespec (D : Duration) return timespec is
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S : time_t;
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F : Duration;
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begin
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S := time_t (Long_Long_Integer (D));
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F := D - Duration (S);
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-- If F has negative value due to a round-up, adjust for positive F
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-- value.
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if F < 0.0 then
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S := S - 1;
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F := F + 1.0;
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end if;
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return
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timespec'(tv_sec => S,
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tv_nsec => Long_Integer (Long_Long_Integer (F * 10#1#E9)));
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end To_Timespec;
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-----------------
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-- Timed_Delay --
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-----------------
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procedure Timed_Delay
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(Time : Duration;
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Mode : Integer)
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is
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Request : aliased timespec;
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Remaind : aliased timespec;
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Rel_Time : Duration;
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Abs_Time : Duration;
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Base_Time : constant Duration := Clock;
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Check_Time : Duration := Base_Time;
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Result : Integer;
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pragma Unreferenced (Result);
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begin
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if Mode = Relative then
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Rel_Time := Time;
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Abs_Time := Time + Check_Time;
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else
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Rel_Time := Time - Check_Time;
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Abs_Time := Time;
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end if;
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if Rel_Time > 0.0 then
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loop
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Request := To_Timespec (Rel_Time);
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Result := nanosleep (Request'Access, Remaind'Access);
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Check_Time := Clock;
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exit when Abs_Time <= Check_Time or else Check_Time < Base_Time;
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Rel_Time := Abs_Time - Check_Time;
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end loop;
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end if;
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end Timed_Delay;
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----------------
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-- Initialize --
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----------------
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procedure Initialize is
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begin
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null;
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end Initialize;
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end System.OS_Primitives;
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