diff gcc/ada/libgnat/s-osprim__solaris.adb @ 111:04ced10e8804

gcc 7
author kono
date Fri, 27 Oct 2017 22:46:09 +0900
parents
children 84e7813d76e9
line wrap: on
line diff
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/ada/libgnat/s-osprim__solaris.adb	Fri Oct 27 22:46:09 2017 +0900
@@ -0,0 +1,126 @@
+------------------------------------------------------------------------------
+--                                                                          --
+--                 GNAT RUN-TIME LIBRARY (GNARL) COMPONENTS                 --
+--                                                                          --
+--                  S Y S T E M . O S _ P R I M I T I V E S                 --
+--                                                                          --
+--                                  B o d y                                 --
+--                                                                          --
+--          Copyright (C) 1998-2017, Free Software Foundation, Inc.         --
+--                                                                          --
+-- GNARL 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/>.                                          --
+--                                                                          --
+-- GNARL was developed by the GNARL team at Florida State University.       --
+-- Extensive contributions were provided by Ada Core Technologies, Inc.     --
+--                                                                          --
+------------------------------------------------------------------------------
+
+--  This version uses gettimeofday and select
+--  This file is suitable for Solaris (32 and 64 bits).
+
+package body System.OS_Primitives is
+
+   --  ??? These definitions are duplicated from System.OS_Interface
+   --  because we don't want to depend on any package. Consider removing
+   --  these declarations in System.OS_Interface and move these ones in
+   --  the spec.
+
+   type struct_timeval is record
+      tv_sec  : Long_Integer;
+      tv_usec : Long_Integer;
+   end record;
+   pragma Convention (C, struct_timeval);
+
+   procedure gettimeofday
+     (tv : not null access struct_timeval;
+      tz : Address := Null_Address);
+   pragma Import (C, gettimeofday, "gettimeofday");
+
+   procedure C_select
+     (n         : Integer := 0;
+      readfds,
+      writefds,
+      exceptfds : Address := Null_Address;
+      timeout   : not null access struct_timeval);
+   pragma Import (C, C_select, "select");
+
+   -----------
+   -- Clock --
+   -----------
+
+   function Clock return Duration is
+      TV : aliased struct_timeval;
+
+   begin
+      gettimeofday (TV'Access);
+      return Duration (TV.tv_sec) + Duration (TV.tv_usec) / 10#1#E6;
+   end Clock;
+
+   -----------------
+   -- Timed_Delay --
+   -----------------
+
+   procedure Timed_Delay
+     (Time : Duration;
+      Mode : Integer)
+   is
+      Rel_Time   : Duration;
+      Abs_Time   : Duration;
+      Base_Time  : constant Duration := Clock;
+      Check_Time : Duration := Base_Time;
+      timeval    : aliased struct_timeval;
+
+   begin
+      if Mode = Relative then
+         Rel_Time := Time;
+         Abs_Time := Time + Check_Time;
+      else
+         Rel_Time := Time - Check_Time;
+         Abs_Time := Time;
+      end if;
+
+      if Rel_Time > 0.0 then
+         loop
+            timeval.tv_sec := Long_Integer (Rel_Time);
+
+            if Duration (timeval.tv_sec) > Rel_Time then
+               timeval.tv_sec := timeval.tv_sec - 1;
+            end if;
+
+            timeval.tv_usec :=
+              Long_Integer ((Rel_Time - Duration (timeval.tv_sec)) * 10#1#E6);
+
+            C_select (timeout => timeval'Unchecked_Access);
+            Check_Time := Clock;
+
+            exit when Abs_Time <= Check_Time or else Check_Time < Base_Time;
+
+            Rel_Time := Abs_Time - Check_Time;
+         end loop;
+      end if;
+   end Timed_Delay;
+
+   ----------------
+   -- Initialize --
+   ----------------
+
+   procedure Initialize is
+   begin
+      null;
+   end Initialize;
+
+end System.OS_Primitives;