event_set
(PECL libevent >= 0.0.1)
event_set — Prepare an event
说明
Prepares the event to be used in event_add(). The event is prepared to call the function specified by the callback on the events specified in parameter events, which is a set of the following flags: EV_TIMEOUT, EV_SIGNAL, EV_READ, EV_WRITE and EV_PERSIST.
If EV_SIGNAL bit is set in parameter events, the fd is interpreted as signal number.
After initializing the event, use event_base_set() to associate the event with its event base.
In case of matching event, these three arguments are passed to the callback function:
-
fd -
Signal number or resource indicating the stream.
-
events -
A flag indicating the event. Consists of the following flags:
EV_TIMEOUT,EV_SIGNAL,EV_READ,EV_WRITEandEV_PERSIST. -
arg -
Optional parameter, previously passed to event_set() as
arg.
参数
-
event -
Valid event resource.
-
fd -
Valid PHP stream resource. The stream must be castable to file descriptor, so you most likely won't be able to use any of filtered streams.
-
events -
A set of flags indicating the desired event, can be
EV_READand/orEV_WRITE. The additional flagEV_PERSISTmakes the event to persist until event_del() is called, otherwise the callback is invoked only once. -
callback -
Callback function to be called when the matching event occurs.
-
arg -
Optional callback parameter.
返回值
event_set() returns TRUE on success or FALSE on error.
更新日志
| 版本 | 说明 |
|---|---|
| 0.0.4 | EV_SIGNAL support was added. |
