SYNOPSIS
#include <event2/event_compat.h>
#include <event2/event-config.h>
#include <event2/util.h>
Macros
#define
EVENT_FD(ev) ((int)
event_get_fd(ev))
#define
EVENT_SIGNAL(ev)
event_get_signal(ev)
#define
evsignal_set(ev, x, cb, arg)
event_set((ev), (x),
EV_SIGNAL|
EV_PERSIST, (cb), (arg))
#define
evtimer_set(ev, cb, arg)
event_set((ev), -1, 0, (cb), (arg))
timeout_* macros
Deprecated
These macros are deprecated because their naming is inconsistent with the rest of Libevent. Use the evtimer_* macros instead.
#define timeout_add(ev, tv) event_add((ev), (tv))
#define
timeout_set(ev, cb, arg)
event_set((ev), -1, 0, (cb), (arg))
#define
timeout_del(ev)
event_del(ev)
#define
timeout_pending(ev, tv)
event_pending((ev),
EV_TIMEOUT, (tv))
#define
timeout_initialized(ev)
event_initialized(ev)
signal_* macros
Deprecated
These macros are deprecated because their naming is inconsistent with the rest of Libevent. Use the evsignal_* macros instead.
#define signal_add(ev, tv) event_add((ev), (tv))
#define
signal_set(ev, x, cb, arg)
event_set((ev), (x),
EV_SIGNAL|
EV_PERSIST, (cb), (arg))
#define
signal_del(ev)
event_del(ev)
#define
signal_pending(ev, tv)
event_pending((ev),
EV_SIGNAL, (tv))
#define
signal_initialized(ev)
event_initialized(ev)
Functions
int
event_dispatch (void)
Loop to process events. const char *
event_get_method (void)
Get the kernel event notification mechanism used by Libevent. struct
event_base *
event_init (void)
Initialize the event API. int
event_loop (int)
Handle events. int
event_loopbreak (void)
Abort the active event_loop() immediately. int
event_loopexit (const struct timeval *)
Exit the event loop after the specified time. int
event_once (
evutil_socket_t, short, void(*)(
evutil_socket_t, short, void *), void *, const struct timeval *)
Schedule a one-time event to occur. int
event_priority_init (int)
Set the number of different event priorities. void
event_set (struct
event *,
evutil_socket_t, short, void(*)(
evutil_socket_t, short, void *), void *)
Prepare an event structure to be added.
Detailed Description
Potentially non-threadsafe versions of the functions in
event.h: provided only for backwards compatibility.
In the oldest versions of Libevent,
event_base was not a first-class structure. Instead, there was a single event base that every function manipulated. Later, when separate event bases were added, the old functions that didn't take an
event_base argument needed to work by manipulating the 'current' event base. This could lead to thread-safety issues, and obscure, hard-to-diagnose bugs.
Deprecated
All functions in this file are by definition deprecated.
Function Documentation
int event_dispatch (void)
Loop to process events. Like
event_base_dispatch(), but uses the 'current' base.
Deprecated
This function is deprecated because it is easily confused by multiple calls to event_init(), and because it is not safe for multithreaded use. The replacement is event_base_dispatch().
See Also:
event_base_dispatch(), event_init()
const char* event_get_method (void)
Get the kernel event notification mechanism used by Libevent.
Deprecated
This function is obsolete, and has been replaced by event_base_get_method(). Its use is deprecated because it relies on the 'current' base configured by event_init().
See Also:
event_base_get_method()
struct event_base* event_init (void) [read]
Initialize the event API. The event API needs to be initialized with
event_init() before it can be used. Sets the global current base that gets used for events that have no base associated with them.
Deprecated
This function is deprecated because it replaces the 'current' event_base, and is totally unsafe for multithreaded use. The replacement is event_base_new().
See Also:
event_base_set(), event_base_new()
int event_loop (int)
Handle events. This function behaves like
event_base_loop(), but uses the 'current' base
Deprecated
This function is deprecated because it uses the event base from the last call to event_init, and is therefore not safe for multithreaded use. The replacement is event_base_loop().
See Also:
event_base_loop(), event_init()
int event_loopbreak (void)
Abort the active
event_loop() immediately. This function behaves like event_base_loopbreakt(), except that it uses the 'current' base.
Deprecated
This function is deprecated because it uses the event base from the last call to event_init, and is therefore not safe for multithreaded use. The replacement is event_base_loopbreak().
See Also:
event_base_loopbreak(), event_init()
int event_loopexit (const struct timeval *)
Exit the event loop after the specified time. This function behaves like
event_base_loopexit(), except that it uses the 'current' base.
Deprecated
This function is deprecated because it uses the event base from the last call to event_init, and is therefore not safe for multithreaded use. The replacement is event_base_loopexit().
See Also:
event_init, event_base_loopexit()
int event_once (evutil_socket_t, short, void(*)(evutil_socket_t, short, void *), void *, const struct timeval *)
Schedule a one-time event to occur.
Deprecated
This function is obsolete, and has been replaced by event_base_once(). Its use is deprecated because it relies on the 'current' base configured by event_init().
See Also:
event_base_once()
int event_priority_init (int)
Set the number of different event priorities.
Deprecated
This function is deprecated because it is easily confused by multiple calls to event_init(), and because it is not safe for multithreaded use. The replacement is event_base_priority_init().
See Also:
event_base_priority_init()
void event_set (struct event *, evutil_socket_t, short, void(*)(evutil_socket_t, short, void *), void *)
Prepare an event structure to be added.
Deprecated
event_set() is not recommended for new code, because it requires a subsequent call to event_base_set() to be safe under most circumstances. Use event_assign() or event_new() instead.