From 554fd8c5195424bdbcabf5de30fdc183aba391bd Mon Sep 17 00:00:00 2001 From: upstream source tree Date: Sun, 15 Mar 2015 20:14:05 -0400 Subject: obtained gcc-4.6.4.tar.bz2 from upstream website; verified gcc-4.6.4.tar.bz2.sig; imported gcc-4.6.4 source tree from verified upstream tarball. downloading a git-generated archive based on the 'upstream' tag should provide you with a source tree that is binary identical to the one extracted from the above tarball. if you have obtained the source via the command 'git clone', however, do note that line-endings of files in your working directory might differ from line-endings of the respective files in the upstream repository. --- gcc/ada/a-caldel-vms.adb | 107 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 107 insertions(+) create mode 100644 gcc/ada/a-caldel-vms.adb (limited to 'gcc/ada/a-caldel-vms.adb') diff --git a/gcc/ada/a-caldel-vms.adb b/gcc/ada/a-caldel-vms.adb new file mode 100644 index 000000000..128918a9a --- /dev/null +++ b/gcc/ada/a-caldel-vms.adb @@ -0,0 +1,107 @@ +------------------------------------------------------------------------------ +-- -- +-- GNAT RUN-TIME LIBRARY (GNARL) COMPONENTS -- +-- -- +-- A D A . C A L E N D A R . D E L A Y S -- +-- -- +-- B o d y -- +-- -- +-- Copyright (C) 1991-1994, Florida State University -- +-- Copyright (C) 1995-2009, AdaCore -- +-- -- +-- 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 2, or (at your option) any later ver- -- +-- sion. GNARL 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. See the GNU General Public License -- +-- for more details. You should have received a copy of the GNU General -- +-- Public License distributed with GNARL; see file COPYING. If not, write -- +-- to the Free Software Foundation, 51 Franklin Street, Fifth Floor, -- +-- Boston, MA 02110-1301, USA. -- +-- -- +-- As a special exception, if other files instantiate generics from this -- +-- unit, or you link this unit with other files to produce an executable, -- +-- this unit does not by itself cause the resulting executable to be -- +-- covered by the GNU General Public License. This exception does not -- +-- however invalidate any other reasons why the executable file might be -- +-- covered by the GNU Public License. -- +-- -- +-- GNARL was developed by the GNARL team at Florida State University. -- +-- Extensive contributions were provided by Ada Core Technologies, Inc. -- +-- -- +------------------------------------------------------------------------------ + +-- This is the Alpha/VMS version + +with System.OS_Primitives; +with System.Soft_Links; + +package body Ada.Calendar.Delays is + + package OSP renames System.OS_Primitives; + package TSL renames System.Soft_Links; + + use type TSL.Timed_Delay_Call; + + ----------------------- + -- Local Subprograms -- + ----------------------- + + procedure Timed_Delay_NT (Time : Duration; Mode : Integer); + -- Timed delay procedure used when no tasking is active + + --------------- + -- Delay_For -- + --------------- + + procedure Delay_For (D : Duration) is + begin + TSL.Timed_Delay.all + (Duration'Min (D, OSP.Max_Sensible_Delay), OSP.Relative); + end Delay_For; + + ----------------- + -- Delay_Until -- + ----------------- + + procedure Delay_Until (T : Time) is + begin + TSL.Timed_Delay.all (To_Duration (T), OSP.Absolute_Calendar); + end Delay_Until; + + ----------------- + -- To_Duration -- + ----------------- + + function To_Duration (T : Time) return Duration is + Safe_Ada_High : constant Time := Time_Of (2250, 1, 1, 0.0); + -- A value distant enough to emulate "end of time" but which does not + -- cause overflow. + + Safe_T : constant Time := + (if T > Safe_Ada_High then Safe_Ada_High else T); + + begin + return OSP.To_Duration (OSP.OS_Time (Safe_T), OSP.Absolute_Calendar); + end To_Duration; + + -------------------- + -- Timed_Delay_NT -- + -------------------- + + procedure Timed_Delay_NT (Time : Duration; Mode : Integer) is + begin + OSP.Timed_Delay (Time, Mode); + end Timed_Delay_NT; + +begin + -- Set up the Timed_Delay soft link to the non tasking version if it has + -- not been already set. If tasking is present, Timed_Delay has already set + -- this soft link, or this will be overridden during the elaboration of + -- System.Tasking.Initialization + + if TSL.Timed_Delay = null then + TSL.Timed_Delay := Timed_Delay_NT'Access; + end if; +end Ada.Calendar.Delays; -- cgit v1.2.3