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diff --git a/gdb/continuations.h b/gdb/continuations.h
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+/* Continuations for GDB, the GNU debugger.
+
+   Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007, 2008,
+   2009, 2010, 2011 Free Software Foundation, Inc.
+
+   This file is part of GDB.
+
+   This program 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 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#ifndef CONTINUATIONS_H
+#define CONTINUATIONS_H
+
+struct thread_info;
+struct inferior;
+
+/* To continue the execution commands when running gdb asynchronously.
+   A continuation structure contains a pointer to a function to be called
+   to finish the command, once the target has stopped.  Such mechanism is
+   used by the finish and until commands, and in the remote protocol
+   when opening an extended-remote connection.  */
+
+/* Prototype of the continuation callback functions.  */
+typedef void (continuation_ftype) (void *);
+
+/* Prototype of the function responsible for releasing the argument
+   passed to the continuation callback functions, either when the
+   continuation is called, or discarded.  */
+typedef void (continuation_free_arg_ftype) (void *);
+
+/* Thread specific continuations.  */
+
+extern void add_continuation (struct thread_info *,
+			      continuation_ftype *, void *,
+			      continuation_free_arg_ftype *);
+extern void do_all_continuations (void);
+extern void do_all_continuations_thread (struct thread_info *);
+extern void discard_all_continuations (void);
+extern void discard_all_continuations_thread (struct thread_info *);
+
+extern void add_intermediate_continuation (struct thread_info *,
+					   continuation_ftype *, void *,
+					   continuation_free_arg_ftype *);
+extern void do_all_intermediate_continuations (void);
+extern void do_all_intermediate_continuations_thread (struct thread_info *);
+extern void discard_all_intermediate_continuations (void);
+extern void discard_all_intermediate_continuations_thread (struct thread_info *);
+
+/* Inferior specific (any thread) continuations.  */
+
+extern void add_inferior_continuation (continuation_ftype *,
+				       void *,
+				       continuation_free_arg_ftype *);
+extern void do_all_inferior_continuations (void);
+extern void discard_all_inferior_continuations (struct inferior *inf);
+
+#endif