| ------------------------------------------------------------------------------ |
| -- -- |
| -- GNAT RUN-TIME COMPONENTS -- |
| -- -- |
| -- G N A T . C T R L _ C -- |
| -- -- |
| -- S p e c -- |
| -- -- |
| -- Copyright (C) 2002-2021, AdaCore -- |
| -- -- |
| -- 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 -- |
| -- <http://www.gnu.org/licenses/>. -- |
| -- -- |
| -- GNAT was originally developed by the GNAT team at New York University. -- |
| -- Extensive contributions were provided by Ada Core Technologies Inc. -- |
| -- -- |
| ------------------------------------------------------------------------------ |
| |
| -- This package may be used to intercept the interruption of a running |
| -- program by the operator typing Control-C, without having to use an Ada |
| -- interrupt handler protected object. |
| |
| -- This package is currently implemented under Windows and Unix platforms |
| |
| -- Note concerning Unix systems: |
| |
| -- The behavior of this package when using tasking depends on the interaction |
| -- between sigaction() and the thread library. |
| |
| package GNAT.Ctrl_C is |
| |
| type Handler_Type is access procedure; |
| -- Any parameterless library level procedure can be used as a handler. |
| -- Handler_Type should not propagate exceptions. |
| |
| procedure Install_Handler (Handler : Handler_Type); |
| -- Set up Handler to be called if the operator hits Ctrl-C, instead of the |
| -- standard Control-C handler. |
| |
| procedure Uninstall_Handler; |
| -- Reinstall the standard Control-C handler. |
| -- If Install_Handler has never been called, this procedure has no effect. |
| |
| private |
| pragma Import (C, Uninstall_Handler, "__gnat_uninstall_int_handler"); |
| end GNAT.Ctrl_C; |
