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[/] [openrisc/] [tags/] [gnu-src/] [gcc-4.5.1/] [gcc-4.5.1-or32-1.0rc1/] [gcc/] [ada/] [s-osprim-solaris.adb] - Rev 338
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------------------------------------------------------------------------------ -- -- -- 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) 1998-2009, 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; --------------------- -- Monotonic_Clock -- --------------------- function Monotonic_Clock return Duration renames 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;