event_add
(PECL libevent >= 0.0.1)
event_add — Add an event to the set of monitored events
说明
$event
[, int $timeout = -1
] ) event_add() schedules the execution of the event
when the event specified in event_set() occurs or in at least the time
specified by the timeout argument. If
timeout was not specified, not timeout is set. The
event must be already initalized by event_set()
and event_base_set() functions. If the
event already has a timeout set, it is replaced by
the new one.
参数
-
event -
Valid event resource.
-
timeout -
Optional timeout (in microseconds).
返回值
event_add() returns TRUE on success or FALSE on error.
用户评论:
[#1] zhaoyong dot lc at gmail dot com [2013-03-21 03:59:34]
This is a Timer example use pcntl and libevent
function newChild($func_name) {
echo "enter newChild\n";
$args = func_get_args();
unset($args[0]);
$pid = pcntl_fork();
if ($pid == 0) {
function_exists($func_name) and exit(call_user_func_array($func_name, $args)) or exit(-1);
} else if($pid == -1) {
echo "Couldn't create child process";
} else {
return $pid;
}
}
function on_timer() {
echo "timer called\n";
}
function timer($func, $timeouts){
echo "enter timer\n";
$base = event_base_new();
$event = event_new();
event_set($event, 0, EV_TIMEOUT, $func);
event_base_set($event, $base);
event_add($event, $timeouts);
event_base_loop($base);
}
$pid = newChild("timer", "on_timer", 5000000);
if ($pid > 0) {
echo "master process exit\n";
}