Remove last traces of discard_all_inferiors

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

diff --git a/gdb/event-loop.h b/gdb/event-loop.h
index 501a56e25592fbb24ce3b1a21988a39819f11eb4..64f3712786d9e727fdee8689d41df1cc18c03fbd 100644 (file)
--- a/gdb/event-loop.h
+++ b/gdb/event-loop.h
@@ -1,6 +1,5 @@
 /* Definitions used by the GDB event loop.
-   Copyright (C) 1999, 2000, 2007, 2008, 2009, 2010
-   Free Software Foundation, Inc.
+   Copyright (C) 1999-2020 Free Software Foundation, Inc.
    Written by Elena Zannoni <ezannoni@cygnus.com> of Cygnus Solutions.
 
    This file is part of GDB.
@@ -18,6 +17,9 @@
    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 EVENT_LOOP_H
+#define EVENT_LOOP_H
+
 /* An event loop listens for events from multiple event sources.  When
    an event arrives, it is queued and processed by calling the
    appropriate event handler.  The event loop then continues to listen
@@ -76,55 +78,34 @@ typedef void (sig_handler_func) (gdb_client_data);
 typedef void (async_event_handler_func) (gdb_client_data);
 typedef void (timer_handler_func) (gdb_client_data);
 
-/* Where to add an event onto the event queue, by queue_event.  */
-typedef enum
-  {
-    /* Add at tail of queue.  It will be processed in first in first
-       out order.  */
-    TAIL,
-    /* Add at head of queue.  It will be processed in last in first
-       out order.  */
-    HEAD
-  }
-queue_position;
-
 /* Exported functions from event-loop.c */
 
 extern void start_event_loop (void);
-extern int gdb_do_one_event (void *data);
+extern int gdb_do_one_event (void);
 extern void delete_file_handler (int fd);
 extern void add_file_handler (int fd, handler_func *proc, 
                              gdb_client_data client_data);
 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 void delete_async_signal_handler (struct async_signal_handler **);
 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.  */
+extern void mark_async_signal_handler (struct async_signal_handler *handler);
+
+/* Returns true if HANDLER is marked ready.  */
 
-/* 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);
+extern int
+  async_signal_handler_is_marked (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.  */
+/* Mark HANDLER as NOT ready.  */
 
-void gdb_call_async_signal_handler (struct async_signal_handler *handler,
-                                   int immediate_p);
+extern void clear_async_signal_handler (struct async_signal_handler *handler);
 
 /* Create and register an asynchronous event source in the event loop,
    and set PROC as its callback.  CLIENT_DATA is passed as argument to
@@ -143,3 +124,11 @@ extern void
 /* Call the handler from HANDLER the next time through the event
    loop.  */
 extern void mark_async_event_handler (struct async_event_handler *handler);
+
+/* Mark the handler (ASYNC_HANDLER_PTR) as NOT ready.  */
+
+extern void clear_async_event_handler (struct async_event_handler *handler);
+
+extern void initialize_async_signal_handlers (void);
+
+#endif /* EVENT_LOOP_H */