Don't check target is running in remote_target::mourn_inferior

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

diff --git a/gdb/event-loop.h b/gdb/event-loop.h
index 9a61d91cdcf13c5101f5d9e4239dbc979440c6af..64f3712786d9e727fdee8689d41df1cc18c03fbd 100644 (file)
--- a/gdb/event-loop.h
+++ b/gdb/event-loop.h
@@ -1,6 +1,5 @@
 /* Definitions used by the GDB event loop.
 /* 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.
    Written by Elena Zannoni <ezannoni@cygnus.com> of Cygnus Solutions.
 
    This file is part of GDB.


@@ -18,18 +17,21 @@
    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 

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

-   appropriate event handler. The event loop then continues to listen
-   for more events. An event loop completes when there are no event
+   appropriate event handler.  The event loop then continues to listen
+   for more events.  An event loop completes when there are no event

    sources to listen on.  External event sources can be plugged into
    the loop.
 
    There are 4 main components:
    sources to listen on.  External event sources can be plugged into
    the loop.
 
    There are 4 main components:

-   - a list of file descriptors to be monitored, GDB_NOTIFIER.  
+   - a list of file descriptors to be monitored, GDB_NOTIFIER.

    - a list of asynchronous event sources to be monitored,
      ASYNC_EVENT_HANDLER_LIST.
    - a list of asynchronous event sources to be monitored,
      ASYNC_EVENT_HANDLER_LIST.

-   - a list of events that have occurred, EVENT_QUEUE.  
+   - a list of events that have occurred, EVENT_QUEUE.

    - a list of signal handling functions, SIGHANDLER_LIST.
 
    GDB_NOTIFIER keeps track of the file descriptor based event
    - a list of signal handling functions, SIGHANDLER_LIST.
 
    GDB_NOTIFIER keeps track of the file descriptor based event


@@ -64,9 +66,9 @@
    functions that are invoked through traditional signal handlers.
    The actions to be taken is response to such events will be executed
    when the SIGHANDLER_LIST is scanned, the next time through the
    functions that are invoked through traditional signal handlers.
    The actions to be taken is response to such events will be executed
    when the SIGHANDLER_LIST is scanned, the next time through the

-   infinite loop.  
+   infinite loop.

 
 

-   Corollary tasks are the creation and deletion of event sources. */
+   Corollary tasks are the creation and deletion of event sources.  */

 
 typedef void *gdb_client_data;
 struct async_signal_handler;
 
 typedef void *gdb_client_data;
 struct async_signal_handler;


@@ -76,51 +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);
 
 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);
 /* 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 delete_file_handler (int fd);

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

 extern struct async_signal_handler *
 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);
+  create_async_signal_handler (sig_handler_func *proc, 
+                              gdb_client_data client_data);
+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);
 
 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
 
 /* Create and register an asynchronous event source in the event loop,
    and set PROC as its callback.  CLIENT_DATA is passed as argument to


@@ -139,3 +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);
 /* 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 */