/* blockinput.h - interface to blocking complicated interrupt-driven input.
- Copyright (C) 1989, 1993, 2004 Free Software Foundation, Inc.
+ Copyright (C) 1989, 1993, 2001, 2002, 2003, 2004,
+ 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
This file is part of GNU Emacs.
GNU Emacs is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2, or (at your option)
+the Free Software Foundation; either version 3, or (at your option)
any later version.
GNU Emacs is distributed in the hope that it will be useful,
interrupt_input_pending to a non-zero value. If that flag is set
when input becomes unblocked, UNBLOCK_INPUT will send a new SIGIO. */
-extern int interrupt_input_blocked;
+extern volatile int interrupt_input_blocked;
/* Nonzero means an input interrupt has arrived
during the current critical section. */