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Reuse watcher resources when possible

Previously, disabling the sole read or write watcher for a stream would result in a duplicate UV-watcher for that stream being created. This keeps track of which UV-watchers are associated with a stream until the watcher is cancelled (not just disabled).
This commit is contained in:
Aaron Piotrowski 2017-04-24 19:19:22 -05:00
parent e1491b1925
commit 45476b76a4

View File

@ -17,9 +17,12 @@ class UvDriver extends Driver {
/** @var \Amp\Loop\Watcher[]|\Amp\Loop\Watcher[][] */
private $watchers = [];
/** @var resource[] */
/** @var int[] */
private $io = [];
/** @var resource[] */
private $streams = [];
/** @var callable */
private $ioCallback;
@ -141,8 +144,12 @@ class UvDriver extends Driver {
}
$event = $this->events[$watcherId];
$eventId = (int) $event;
if (empty($this->watchers[(int) $event])) {
if (empty($this->watchers[$eventId])) {
if (isset($this->io[$eventId])) {
unset($this->streams[$this->io[$eventId]], $this->io[$eventId]);
}
\uv_close($event);
}
@ -179,17 +186,18 @@ class UvDriver extends Driver {
case Watcher::WRITABLE:
$streamId = (int) $watcher->value;
if (isset($this->io[$streamId])) {
$event = $this->io[$streamId];
if (isset($this->streams[$streamId])) {
$event = $this->streams[$streamId];
} elseif (isset($this->events[$id])) {
$event = $this->io[$streamId] = $this->events[$id];
$event = $this->streams[$streamId] = $this->events[$id];
} else {
$event = $this->io[$streamId] = \uv_poll_init_socket($this->handle, $watcher->value);
$event = $this->streams[$streamId] = \uv_poll_init_socket($this->handle, $watcher->value);
}
$eventId = (int) $event;
$this->events[$id] = $event;
$this->watchers[$eventId][$id] = $watcher;
$this->io[$eventId] = $streamId;
$flags = 0;
foreach ($this->watchers[$eventId] as $watcher) {
@ -255,7 +263,7 @@ class UvDriver extends Driver {
unset($this->watchers[$eventId][$id]);
if (empty($this->watchers[$eventId])) {
unset($this->watchers[$eventId], $this->io[(int) $watcher->value]);
unset($this->watchers[$eventId]);
if (\uv_is_active($event)) {
\uv_poll_stop($event);