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-rw-r--r--tevent/tevent_internal.h158
1 files changed, 158 insertions, 0 deletions
diff --git a/tevent/tevent_internal.h b/tevent/tevent_internal.h
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+++ b/tevent/tevent_internal.h
@@ -0,0 +1,158 @@
+/*
+ Unix SMB/CIFS implementation.
+
+ generalised event loop handling
+
+ Internal structs
+
+ Copyright (C) Stefan Metzmacher 2005
+
+ 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 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ 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, see <http://www.gnu.org/licenses/>.
+*/
+
+struct event_ops {
+ /* conntext init */
+ int (*context_init)(struct event_context *ev);
+
+ /* fd_event functions */
+ struct fd_event *(*add_fd)(struct event_context *ev,
+ TALLOC_CTX *mem_ctx,
+ int fd, uint16_t flags,
+ event_fd_handler_t handler,
+ void *private_data);
+ uint16_t (*get_fd_flags)(struct fd_event *fde);
+ void (*set_fd_flags)(struct fd_event *fde, uint16_t flags);
+
+ /* timed_event functions */
+ struct timed_event *(*add_timed)(struct event_context *ev,
+ TALLOC_CTX *mem_ctx,
+ struct timeval next_event,
+ event_timed_handler_t handler,
+ void *private_data);
+ /* disk aio event functions */
+ struct aio_event *(*add_aio)(struct event_context *ev,
+ TALLOC_CTX *mem_ctx,
+ struct iocb *iocb,
+ event_aio_handler_t handler,
+ void *private_data);
+ /* signal functions */
+ struct signal_event *(*add_signal)(struct event_context *ev,
+ TALLOC_CTX *mem_ctx,
+ int signum, int sa_flags,
+ event_signal_handler_t handler,
+ void *private_data);
+
+ /* loop functions */
+ int (*loop_once)(struct event_context *ev);
+ int (*loop_wait)(struct event_context *ev);
+};
+
+struct fd_event {
+ struct fd_event *prev, *next;
+ struct event_context *event_ctx;
+ int fd;
+ uint16_t flags; /* see EVENT_FD_* flags */
+ event_fd_handler_t handler;
+ /* this is private for the specific handler */
+ void *private_data;
+ /* this is private for the events_ops implementation */
+ uint16_t additional_flags;
+ void *additional_data;
+};
+
+struct timed_event {
+ struct timed_event *prev, *next;
+ struct event_context *event_ctx;
+ struct timeval next_event;
+ event_timed_handler_t handler;
+ /* this is private for the specific handler */
+ void *private_data;
+ /* this is private for the events_ops implementation */
+ void *additional_data;
+};
+
+struct signal_event {
+ struct signal_event *prev, *next;
+ struct event_context *event_ctx;
+ event_signal_handler_t handler;
+ void *private_data;
+ int signum;
+ int sa_flags;
+};
+
+/* DEBUG */
+enum ev_debug_level {EV_DEBUG_FATAL, EV_DEBUG_ERROR,
+ EV_DEBUG_WARNING, EV_DEBUG_TRACE};
+
+struct ev_debug_ops {
+ void (*debug)(void *context, enum ev_debug_level level,
+ const char *fmt, va_list ap) PRINTF_ATTRIBUTE(3,0);
+ void *context;
+};
+
+int ev_set_debug(struct event_context *ev,
+ void (*debug)(void *context, enum ev_debug_level level,
+ const char *fmt, va_list ap),
+ void *context);
+int ev_set_debug_stderr(struct event_context *ev);
+void ev_debug(struct event_context *ev, enum ev_debug_level level, const char *fmt, ...);
+
+/* aio event is private to the aio backend */
+struct aio_event;
+
+struct event_context {
+ /* the specific events implementation */
+ const struct event_ops *ops;
+
+ /* list of timed events - used by common code */
+ struct timed_event *timed_events;
+
+ /* this is private for the events_ops implementation */
+ void *additional_data;
+
+ /* number of signal event handlers */
+ int num_signal_handlers;
+
+ /* pipe hack used with signal handlers */
+ struct fd_event *pipe_fde;
+
+ /* debugging operations */
+ struct ev_debug_ops debug_ops;
+};
+
+
+bool event_register_backend(const char *name, const struct event_ops *ops);
+
+bool ev_timeval_is_zero(const struct timeval *tv);
+struct timed_event *common_event_add_timed(struct event_context *, TALLOC_CTX *,
+ struct timeval, event_timed_handler_t, void *);
+struct timeval common_event_loop_timer_delay(struct event_context *);
+
+struct signal_event *common_event_add_signal(struct event_context *ev,
+ TALLOC_CTX *mem_ctx,
+ int signum,
+ int sa_flags,
+ event_signal_handler_t handler,
+ void *private_data);
+int common_event_check_signal(struct event_context *ev);
+
+
+bool events_standard_init(void);
+bool events_select_init(void);
+#if HAVE_EVENTS_EPOLL
+bool events_epoll_init(void);
+#endif
+#if HAVE_LINUX_AIO
+bool events_aio_init(void);
+#endif