File : a-excpol.adb
------------------------------------------------------------------------------
-- --
-- GNU ADA RUN-TIME LIBRARY (GNARL) COMPONENTS --
-- --
5 -- A D A . E X C E P T I O N S . P O L L --
-- (version supporting asynchronous abort test) --
-- --
-- B o d y --
-- --
10 -- $Revision: 1.9 $
-- --
-- Copyright (C) 1992-2000, Free Software Foundation, Inc. --
-- --
-- GNARL is free software; you can redistribute it and/or modify it under --
15 -- 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- --
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25 -- 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 --
30 -- covered by the GNU Public License. --
-- --
-- GNARL was developed by the GNARL team at Florida State University. It is --
-- now maintained by Ada Core Technologies Inc. in cooperation with Florida --
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35 -- --
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-- This version is for targets that do not support per-thread asynchronous
-- signals. On such targets, we require compilation with the -gnatP switch
40 -- that activates periodic polling. Then in the body of the polling routine
-- we test for asynchronous abort.
-- NT, OS/2, HPUX/DCE and SCO currently use this file
45 with System.Soft_Links;
-- used for Check_Abort_Status
separate (Ada.Exceptions)
50 ----------
-- Poll --
----------
procedure Poll is
55 begin
-- Test for asynchronous abort on each poll
if System.Soft_Links.Check_Abort_Status.all /= 0 then
raise Standard'Abort_Signal;
60 end if;
end Poll;