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-exetim-posix.adb | 157 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 157 insertions(+) create mode 100644 gcc/ada/a-exetim-posix.adb (limited to 'gcc/ada/a-exetim-posix.adb') diff --git a/gcc/ada/a-exetim-posix.adb b/gcc/ada/a-exetim-posix.adb new file mode 100644 index 000000000..fe00abe55 --- /dev/null +++ b/gcc/ada/a-exetim-posix.adb @@ -0,0 +1,157 @@ +------------------------------------------------------------------------------ +-- -- +-- GNAT RUN-TIME COMPONENTS -- +-- -- +-- A D A . E X E C U T I O N _ T I M E -- +-- -- +-- B o d y -- +-- -- +-- Copyright (C) 2007-2010, Free Software Foundation, Inc. -- +-- -- +-- GNAT 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 -- +-- . -- +-- -- +-- GNAT was originally developed by the GNAT team at New York University. -- +-- Extensive contributions were provided by Ada Core Technologies Inc. -- +-- -- +------------------------------------------------------------------------------ + +-- This is the POSIX (Realtime Extension) version of this package + +with Ada.Task_Identification; use Ada.Task_Identification; +with Ada.Unchecked_Conversion; + +with System.OS_Interface; use System.OS_Interface; + +with Interfaces.C; use Interfaces.C; + +package body Ada.Execution_Time is + + pragma Linker_Options ("-lrt"); + -- POSIX.1b Realtime Extensions library. Needed to have access to function + -- clock_gettime. + + --------- + -- "+" -- + --------- + + function "+" + (Left : CPU_Time; + Right : Ada.Real_Time.Time_Span) return CPU_Time + is + use type Ada.Real_Time.Time; + begin + return CPU_Time (Ada.Real_Time.Time (Left) + Right); + end "+"; + + function "+" + (Left : Ada.Real_Time.Time_Span; + Right : CPU_Time) return CPU_Time + is + use type Ada.Real_Time.Time; + begin + return CPU_Time (Left + Ada.Real_Time.Time (Right)); + end "+"; + + --------- + -- "-" -- + --------- + + function "-" + (Left : CPU_Time; + Right : Ada.Real_Time.Time_Span) return CPU_Time + is + use type Ada.Real_Time.Time; + begin + return CPU_Time (Ada.Real_Time.Time (Left) - Right); + end "-"; + + function "-" + (Left : CPU_Time; + Right : CPU_Time) return Ada.Real_Time.Time_Span + is + use type Ada.Real_Time.Time; + begin + return (Ada.Real_Time.Time (Left) - Ada.Real_Time.Time (Right)); + end "-"; + + ----------- + -- Clock -- + ----------- + + function Clock + (T : Ada.Task_Identification.Task_Id := + Ada.Task_Identification.Current_Task) + return CPU_Time + is + TS : aliased timespec; + Result : Interfaces.C.int; + + function To_CPU_Time is + new Ada.Unchecked_Conversion (Duration, CPU_Time); + -- Time is equal to Duration (although it is a private type) and + -- CPU_Time is equal to Time. + + function clock_gettime + (clock_id : Interfaces.C.int; + tp : access timespec) + return int; + pragma Import (C, clock_gettime, "clock_gettime"); + -- Function from the POSIX.1b Realtime Extensions library + + CLOCK_THREAD_CPUTIME_ID : constant := 3; + -- Identifier for the clock returning per-task CPU time + + begin + if T = Ada.Task_Identification.Null_Task_Id then + raise Program_Error; + end if; + + Result := clock_gettime + (clock_id => CLOCK_THREAD_CPUTIME_ID, tp => TS'Unchecked_Access); + pragma Assert (Result = 0); + + return To_CPU_Time (To_Duration (TS)); + end Clock; + + ----------- + -- Split -- + ----------- + + procedure Split + (T : CPU_Time; + SC : out Ada.Real_Time.Seconds_Count; + TS : out Ada.Real_Time.Time_Span) + is + use type Ada.Real_Time.Time; + begin + Ada.Real_Time.Split (Ada.Real_Time.Time (T), SC, TS); + end Split; + + ------------- + -- Time_Of -- + ------------- + + function Time_Of + (SC : Ada.Real_Time.Seconds_Count; + TS : Ada.Real_Time.Time_Span := Ada.Real_Time.Time_Span_Zero) + return CPU_Time + is + begin + return CPU_Time (Ada.Real_Time.Time_Of (SC, TS)); + end Time_Of; + +end Ada.Execution_Time; -- cgit v1.2.3