1------------------------------------------------------------------------------ 2-- -- 3-- GNAT RUN-TIME COMPONENTS -- 4-- -- 5-- G N A T . C T R L _ C -- 6-- -- 7-- S p e c -- 8-- -- 9-- Copyright (C) 2002-2010, AdaCore -- 10-- -- 11-- GNAT is free software; you can redistribute it and/or modify it under -- 12-- terms of the GNU General Public License as published by the Free Soft- -- 13-- ware Foundation; either version 3, or (at your option) any later ver- -- 14-- sion. GNAT is distributed in the hope that it will be useful, but WITH- -- 15-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY -- 16-- or FITNESS FOR A PARTICULAR PURPOSE. -- 17-- -- 18-- As a special exception under Section 7 of GPL version 3, you are granted -- 19-- additional permissions described in the GCC Runtime Library Exception, -- 20-- version 3.1, as published by the Free Software Foundation. -- 21-- -- 22-- You should have received a copy of the GNU General Public License and -- 23-- a copy of the GCC Runtime Library Exception along with this program; -- 24-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see -- 25-- <http://www.gnu.org/licenses/>. -- 26-- -- 27-- GNAT was originally developed by the GNAT team at New York University. -- 28-- Extensive contributions were provided by Ada Core Technologies Inc. -- 29-- -- 30------------------------------------------------------------------------------ 31 32-- This package may be used to intercept the interruption of a running 33-- program by the operator typing Control-C, without having to use an Ada 34-- interrupt handler protected object. 35 36-- This package is currently implemented under Windows and Unix platforms 37 38-- Note concerning Unix systems: 39 40-- The behavior of this package when using tasking depends on the interaction 41-- between sigaction() and the thread library. 42 43package GNAT.Ctrl_C is 44 45 type Handler_Type is access procedure; 46 -- Any parameterless library level procedure can be used as a handler. 47 -- Handler_Type should not propagate exceptions. 48 49 procedure Install_Handler (Handler : Handler_Type); 50 -- Set up Handler to be called if the operator hits Ctrl-C, instead of the 51 -- standard Control-C handler. 52 53 procedure Uninstall_Handler; 54 -- Reinstall the standard Control-C handler. 55 -- If Install_Handler has never been called, this procedure has no effect. 56 57private 58 pragma Import (C, Uninstall_Handler, "__gnat_uninstall_int_handler"); 59end GNAT.Ctrl_C; 60