/* Definitions used by the GDB event loop.
- Copyright (C) 1999, 2000, 2007, 2008, 2009, 2010
- Free Software Foundation, Inc.
+ Copyright (C) 1999-2019 Free Software Foundation, Inc.
Written by Elena Zannoni <ezannoni@cygnus.com> of Cygnus Solutions.
This file is part of GDB.
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
/* 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);