<?php declare (strict_types=1);
namespace Sabre\Event\Loop;
/**
* Executes a function after x seconds.
*
* @return void
*/
function setTimeout(callable $cb, float $timeout) {
instance()->setTimeout($cb, $timeout);
}
/**
* Executes a function every x seconds.
*
* The value this function returns can be used to stop the interval with
* clearInterval.
*/
function setInterval(callable $cb, float $timeout) : array {
return instance()->setInterval($cb, $timeout);
}
/**
* Stops a running interval.
*
* @return void
*/
function clearInterval(array $intervalId) {
instance()->clearInterval($intervalId);
}
/**
* Runs a function immediately at the next iteration of the loop.
*
* @return void
*/
function nextTick(callable $cb) {
instance()->nextTick($cb);
}
/**
* Adds a read stream.
*
* The callback will be called as soon as there is something to read from
* the stream.
*
* You MUST call removeReadStream after you are done with the stream, to
* prevent the eventloop from never stopping.
*
* @param resource $stream
* @return void
*/
function addReadStream($stream, callable $cb) {
instance()->addReadStream($stream, $cb);
}
/**
* Adds a write stream.
*
* The callback will be called as soon as the system reports it's ready to
* receive writes on the stream.
*
* You MUST call removeWriteStream after you are done with the stream, to
* prevent the eventloop from never stopping.
*
* @param resource $stream
* @return void
*/
function addWriteStream($stream, callable $cb) {
instance()->addWriteStream($stream, $cb);
}
/**
* Stop watching a stream for reads.
*
* @param resource $stream
* @return void
*/
function removeReadStream($stream) {
instance()->removeReadStream($stream);
}
/**
* Stop watching a stream for writes.
*
* @param resource $stream
* @return void
*/
function removeWriteStream($stream) {
instance()->removeWriteStream($stream);
}
/**
* Runs the loop.
*
* This function will run continiously, until there's no more events to
* handle.
*
* @return void
*/
function run() {
instance()->run();
}
/**
* Executes all pending events.
*
* If $block is turned true, this function will block until any event is
* triggered.
*
* If there are now timeouts, nextTick callbacks or events in the loop at
* all, this function will exit immediately.
*
* This function will return true if there are _any_ events left in the
* loop after the tick.
*/
function tick(bool $block = false) : bool {
return instance()->tick($block);
}
/**
* Stops a running eventloop
*
* @return void
*/
function stop() {
instance()->stop();
}
/**
* Retrieves or sets the global Loop object.
*/
function instance(Loop $newLoop = null) : Loop {
static $loop;
if ($newLoop) {
$loop = $newLoop;
} elseif (!$loop) {
$loop = new Loop();
}
return $loop;
}
