| 1 | /* Async events for the GDB event loop. |
| 2 | Copyright (C) 1999-2020 Free Software Foundation, Inc. |
| 3 | |
| 4 | This file is part of GDB. |
| 5 | |
| 6 | This program is free software; you can redistribute it and/or modify |
| 7 | it under the terms of the GNU General Public License as published by |
| 8 | the Free Software Foundation; either version 3 of the License, or |
| 9 | (at your option) any later version. |
| 10 | |
| 11 | This program is distributed in the hope that it will be useful, |
| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | GNU General Public License for more details. |
| 15 | |
| 16 | You should have received a copy of the GNU General Public License |
| 17 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| 18 | |
| 19 | #ifndef ASYNC_EVENT_H |
| 20 | #define ASYNC_EVENT_H |
| 21 | |
| 22 | #include "gdbsupport/event-loop.h" |
| 23 | |
| 24 | struct async_signal_handler; |
| 25 | struct async_event_handler; |
| 26 | typedef void (sig_handler_func) (gdb_client_data); |
| 27 | typedef void (async_event_handler_func) (gdb_client_data); |
| 28 | |
| 29 | extern struct async_signal_handler * |
| 30 | create_async_signal_handler (sig_handler_func *proc, |
| 31 | gdb_client_data client_data); |
| 32 | extern void delete_async_signal_handler (struct async_signal_handler **); |
| 33 | |
| 34 | /* Call the handler from HANDLER the next time through the event |
| 35 | loop. */ |
| 36 | extern void mark_async_signal_handler (struct async_signal_handler *handler); |
| 37 | |
| 38 | /* Returns true if HANDLER is marked ready. */ |
| 39 | |
| 40 | extern int |
| 41 | async_signal_handler_is_marked (struct async_signal_handler *handler); |
| 42 | |
| 43 | /* Mark HANDLER as NOT ready. */ |
| 44 | |
| 45 | extern void clear_async_signal_handler (struct async_signal_handler *handler); |
| 46 | |
| 47 | /* Create and register an asynchronous event source in the event loop, |
| 48 | and set PROC as its callback. CLIENT_DATA is passed as argument to |
| 49 | PROC upon its invocation. Returns a pointer to an opaque structure |
| 50 | used to mark as ready and to later delete this event source from |
| 51 | the event loop. */ |
| 52 | extern struct async_event_handler * |
| 53 | create_async_event_handler (async_event_handler_func *proc, |
| 54 | gdb_client_data client_data); |
| 55 | |
| 56 | /* Remove the event source pointed by HANDLER_PTR created by |
| 57 | CREATE_ASYNC_EVENT_HANDLER from the event loop, and release it. */ |
| 58 | extern void |
| 59 | delete_async_event_handler (struct async_event_handler **handler_ptr); |
| 60 | |
| 61 | /* Call the handler from HANDLER the next time through the event |
| 62 | loop. */ |
| 63 | extern void mark_async_event_handler (struct async_event_handler *handler); |
| 64 | |
| 65 | /* Mark the handler (ASYNC_HANDLER_PTR) as NOT ready. */ |
| 66 | |
| 67 | extern void clear_async_event_handler (struct async_event_handler *handler); |
| 68 | |
| 69 | extern void initialize_async_signal_handlers (void); |
| 70 | |
| 71 | #endif /* ASYNC_EVENT_H */ |