1------------------------------------------------------------------------------ 2-- -- 3-- GNAT RUN-TIME LIBRARY (GNARL) COMPONENTS -- 4-- -- 5-- A D A . E X C E P T I O N S . P O L L -- 6-- (version supporting asynchronous abort test) -- 7-- -- 8-- B o d y -- 9-- -- 10-- Copyright (C) 1992-2019, Free Software Foundation, Inc. -- 11-- -- 12-- GNARL is free software; you can redistribute it and/or modify it under -- 13-- terms of the GNU General Public License as published by the Free Soft- -- 14-- ware Foundation; either version 3, or (at your option) any later ver- -- 15-- sion. GNAT is distributed in the hope that it will be useful, but WITH- -- 16-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY -- 17-- or FITNESS FOR A PARTICULAR PURPOSE. -- 18-- -- 19-- As a special exception under Section 7 of GPL version 3, you are granted -- 20-- additional permissions described in the GCC Runtime Library Exception, -- 21-- version 3.1, as published by the Free Software Foundation. -- 22-- -- 23-- You should have received a copy of the GNU General Public License and -- 24-- a copy of the GCC Runtime Library Exception along with this program; -- 25-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see -- 26-- <http://www.gnu.org/licenses/>. -- 27-- -- 28-- GNARL was developed by the GNARL team at Florida State University. -- 29-- Extensive contributions were provided by Ada Core Technologies, Inc. -- 30-- -- 31------------------------------------------------------------------------------ 32 33-- This version is for targets that do not support per-thread asynchronous 34-- signals. On such targets, we require compilation with the -gnatP switch 35-- that activates periodic polling. Then in the body of the polling routine 36-- we test for asynchronous abort. 37 38-- Windows and HPUX 10 currently use this file 39 40pragma Warnings (Off); 41-- Allow withing of non-Preelaborated units in Ada 2005 mode where this 42-- package will be categorized as Preelaborate. See AI-362 for details. 43-- It is safe in the context of the run-time to violate the rules. 44 45with System.Soft_Links; 46 47pragma Warnings (On); 48 49separate (Ada.Exceptions) 50 51---------- 52-- Poll -- 53---------- 54 55procedure Poll is 56begin 57 -- Test for asynchronous abort on each poll 58 59 if System.Soft_Links.Check_Abort_Status.all /= 0 then 60 raise Standard'Abort_Signal; 61 end if; 62end Poll; 63