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/*
Unix SMB/CIFS implementation.
generalised event loop handling
Internal structs
Copyright (C) Stefan Metzmacher 2005-2009
** NOTE! The following LGPL license applies to the tevent
** library. This does NOT imply that all of Samba is released
** under the LGPL
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 3 of the License, or (at your option) any later version.
This library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
struct tevent_ops {
/* conntext init */
int (*context_init)(struct tevent_context *ev);
/* fd_event functions */
struct tevent_fd *(*add_fd)(struct tevent_context *ev,
TALLOC_CTX *mem_ctx,
int fd, uint16_t flags,
tevent_fd_handler_t handler,
void *private_data,
const char *handler_name,
const char *location);
void (*set_fd_close_fn)(struct tevent_fd *fde,
tevent_fd_close_fn_t close_fn);
uint16_t (*get_fd_flags)(struct tevent_fd *fde);
void (*set_fd_flags)(struct tevent_fd *fde, uint16_t flags);
/* timed_event functions */
struct tevent_timer *(*add_timer)(struct tevent_context *ev,
TALLOC_CTX *mem_ctx,
struct timeval next_event,
tevent_timer_handler_t handler,
void *private_data,
const char *handler_name,
const char *location);
/* signal functions */
struct tevent_signal *(*add_signal)(struct tevent_context *ev,
TALLOC_CTX *mem_ctx,
int signum, int sa_flags,
tevent_signal_handler_t handler,
void *private_data,
const char *handler_name,
const char *location);
/* loop functions */
int (*loop_once)(struct tevent_context *ev);
int (*loop_wait)(struct tevent_context *ev);
};
struct tevent_fd {
struct tevent_fd *prev, *next;
struct tevent_context *event_ctx;
int fd;
uint16_t flags; /* see TEVENT_FD_* flags */
tevent_fd_handler_t handler;
tevent_fd_close_fn_t close_fn;
/* this is private for the specific handler */
void *private_data;
/* this is for debugging only! */
const char *handler_name;
const char *location;
/* this is private for the events_ops implementation */
uint16_t additional_flags;
void *additional_data;
};
struct tevent_timer {
struct tevent_timer *prev, *next;
struct tevent_context *event_ctx;
struct timeval next_event;
tevent_timer_handler_t handler;
/* this is private for the specific handler */
void *private_data;
/* this is for debugging only! */
const char *handler_name;
const char *location;
/* this is private for the events_ops implementation */
void *additional_data;
};
struct tevent_signal {
struct tevent_signal *prev, *next;
struct tevent_context *event_ctx;
int signum;
int sa_flags;
tevent_signal_handler_t handler;
/* this is private for the specific handler */
void *private_data;
/* this is for debugging only! */
const char *handler_name;
const char *location;
/* this is private for the events_ops implementation */
void *additional_data;
};
struct tevent_debug_ops {
void (*debug)(void *context, enum tevent_debug_level level,
const char *fmt, va_list ap) PRINTF_ATTRIBUTE(3,0);
void *context;
};
void tevent_debug(struct tevent_context *ev, enum tevent_debug_level level,
const char *fmt, ...) PRINTF_ATTRIBUTE(3,4);
struct tevent_context {
/* the specific events implementation */
const struct tevent_ops *ops;
/* list of fd events - used by common code */
struct tevent_fd *fd_events;
/* list of timed events - used by common code */
struct tevent_timer *timer_events;
/* list of signal events - used by common code */
struct tevent_signal *signal_events;
/* this is private for the events_ops implementation */
void *additional_data;
/* pipe hack used with signal handlers */
struct tevent_fd *pipe_fde;
/* debugging operations */
struct tevent_debug_ops debug_ops;
};
bool tevent_register_backend(const char *name, const struct tevent_ops *ops);
int tevent_common_context_destructor(struct tevent_context *ev);
int tevent_common_fd_destructor(struct tevent_fd *fde);
struct tevent_fd *tevent_common_add_fd(struct tevent_context *ev,
TALLOC_CTX *mem_ctx,
int fd,
uint16_t flags,
tevent_fd_handler_t handler,
void *private_data,
const char *handler_name,
const char *location);
void tevent_common_fd_set_close_fn(struct tevent_fd *fde,
tevent_fd_close_fn_t close_fn);
uint16_t tevent_common_fd_get_flags(struct tevent_fd *fde);
void tevent_common_fd_set_flags(struct tevent_fd *fde, uint16_t flags);
struct tevent_timer *tevent_common_add_timer(struct tevent_context *ev,
TALLOC_CTX *mem_ctx,
struct timeval next_event,
tevent_timer_handler_t handler,
void *private_data,
const char *handler_name,
const char *location);
struct timeval tevent_common_loop_timer_delay(struct tevent_context *);
struct tevent_signal *tevent_common_add_signal(struct tevent_context *ev,
TALLOC_CTX *mem_ctx,
int signum,
int sa_flags,
tevent_signal_handler_t handler,
void *private_data,
const char *handler_name,
const char *location);
int tevent_common_check_signal(struct tevent_context *ev);
bool tevent_standard_init(void);
bool tevent_select_init(void);
#ifdef HAVE_EPOLL
bool tevent_epoll_init(void);
#endif
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