2008-07-21 H.J. Lu <hongjiu.lu@intel.com>

[deliverable/binutils-gdb.git] / gdb / event-loop.h

diff --git a/gdb/event-loop.h b/gdb/event-loop.h
index 54e699066ec398185e19f3689ff9d554aa51483a..fc813ca5bfac111875fe06c8537dcfb1b1a4fe1b 100644 (file)
--- a/gdb/event-loop.h
+++ b/gdb/event-loop.h
@@ -1,12 +1,12 @@
 /* Definitions used by the GDB event loop.
 /* Definitions used by the GDB event loop.

-   Copyright 1999 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2000, 2007, 2008 Free Software Foundation, Inc.

    Written by Elena Zannoni <ezannoni@cygnus.com> of Cygnus Solutions.
 
    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
    Written by Elena Zannoni <ezannoni@cygnus.com> of Cygnus Solutions.
 
    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 2 of the License, or
+   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,
    (at your option) any later version.
 
    This program is distributed in the hope that it will be useful,


@@ -15,9 +15,7 @@
    GNU General Public License for more details.
 
    You should have received a copy of the GNU General Public License
    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, write to the Free Software
-   Foundation, Inc., 59 Temple Place - Suite 330,
-   Boston, MA 02111-1307, USA.  */
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */

 
 /* An event loop listens for events from multiple event sources. When
    an event arrives, it is queued and processed by calling the
 
 /* An event loop listens for events from multiple event sources. When
    an event arrives, it is queued and processed by calling the


@@ -85,11 +83,33 @@ queue_position;
 /* Exported functions from event-loop.c */
 
 extern void start_event_loop (void);
 /* Exported functions from event-loop.c */
 
 extern void start_event_loop (void);

+extern int gdb_do_one_event (void *data);

 extern void delete_file_handler (int fd);
 extern void add_file_handler (int fd, handler_func * proc, gdb_client_data client_data);
 extern void delete_file_handler (int fd);
 extern void add_file_handler (int fd, handler_func * proc, gdb_client_data client_data);

-extern void mark_async_signal_handler (struct async_signal_handler *async_handler_ptr);

 extern struct async_signal_handler *
   create_async_signal_handler (sig_handler_func * proc, gdb_client_data client_data);
 extern void delete_async_signal_handler (struct async_signal_handler **async_handler_ptr);
 extern int create_timer (int milliseconds, timer_handler_func * proc, gdb_client_data client_data);
 extern void delete_timer (int id);
 extern struct async_signal_handler *
   create_async_signal_handler (sig_handler_func * proc, gdb_client_data client_data);
 extern void delete_async_signal_handler (struct async_signal_handler **async_handler_ptr);
 extern int create_timer (int milliseconds, timer_handler_func * proc, gdb_client_data client_data);
 extern void delete_timer (int id);

+
+/* Call the handler from HANDLER immediately.  This function
+   runs signal handlers when returning to the event loop would be too
+   slow.  Do not call this directly; use gdb_call_async_signal_handler,
+   below, with IMMEDIATE_P == 1.  */
+void call_async_signal_handler (struct async_signal_handler *handler);
+
+/* Call the handler from HANDLER the next time through the event loop.
+   Do not call this directly; use gdb_call_async_signal_handler,
+   below, with IMMEDIATE_P == 0.  */
+void mark_async_signal_handler (struct async_signal_handler *handler);
+
+/* Wrapper for the body of signal handlers.  Call this function from
+   any SIGINT handler which needs to access GDB data structures or
+   escape via longjmp.  If IMMEDIATE_P is set, this triggers either
+   immediately (for POSIX platforms), or from gdb_select (for
+   MinGW).  If IMMEDIATE_P is clear, the handler will run the next
+   time we return to the event loop and any current select calls
+   will be interrupted.  */
+
+void gdb_call_async_signal_handler (struct async_signal_handler *handler,
+                                   int immediate_p);