8000 Refactor and simplify signal handling logic by clue · Pull Request #150 · reactphp/event-loop · GitHub
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8000 Refactor and simplify signal handling logic #150

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Merged
merged 4 commits into from
Feb 6, 2018
Merged

Refactor and simplify signal handling logic #150

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e6c7785
Simplify removing signal handlers
clue Jan 15, 2018
8afd1f3
Simplify adding signal handlers
clue Jan 15, 2018
3e4421b
Simplify checking signal watchers and remove circular reference
clue Jan 20, 2018
f261f47
Avoid cyclic callback references
clue Jan 28, 2018
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Simplify checking signal watchers and remove circular reference
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@clue
clue committed Feb 6, 2018
commit 3e4421bf6437e5aeda762d9d452e1799c8190fd4
4 changes: 2 additions & 2 deletions src/ExtEventLoop.php
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Original file line number Diff line number Diff line change
Expand Up @@ -41,7 +41,7 @@ public function __construct(EventBaseConfig $config = null)
$this->eventBase = new EventBase($config);
$this->futureTickQueue = new FutureTickQueue();
$this->timerEvents = new SplObjectStorage();
$this->signals = new SignalsHandler($this);
$this->signals = new SignalsHandler();

$this->createTimerCallback();
$this->createStreamCallback();
Expand Down Expand Up @@ -181,7 +181,7 @@ public function run()
$flags = EventBase::LOOP_ONCE;
if (!$this->running || !$this->futureTickQueue->isEmpty()) {
$flags |= EventBase::LOOP_NONBLOCK;
} elseif (!$this->readEvents && !$this->writeEvents && !$this->timerEvents->count()) {
} elseif (!$this->readEvents && !$this->writeEvents && !$this->timerEvents->count() && $this->signals->isEmpty()) {
break;
}

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4 changes: 2 additions & 2 deletions src/ExtLibevLoop.php
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Expand Up @@ -39,7 +39,7 @@ public function __construct()
$this->loop = new EventLoop();
$this->futureTickQueue = new FutureTickQueue();
$this->timerEvents = new SplObjectStorage();
$this->signals = new SignalsHandler($this);
$this->signals = new SignalsHandler();
}

public function addReadStream($stream, $listener)
Expand Down Expand Up @@ -181,7 +181,7 @@ public function run()
$flags = EventLoop::RUN_ONCE;
if (!$this->running || !$this->futureTickQueue->isEmpty()) {
$flags |= EventLoop::RUN_NOWAIT;
} elseif (!$this->readEvents && !$this->writeEvents && !$this->timerEvents->count()) {
} elseif (!$this->readEvents && !$this->writeEvents && !$this->timerEvents->count() && $this->signals->isEmpty()) {
break;
}

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4 changes: 2 additions & 2 deletions src/ExtLibeventLoop.php
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Expand Up @@ -55,7 +55,7 @@ public function __construct()
$this->eventBase = event_base_new();
$this->futureTickQueue = new FutureTickQueue();
$this->timerEvents = new SplObjectStorage();
$this->signals = new SignalsHandler($this);
$this->signals = new SignalsHandler();

$this->createTimerCallback();
$this->createStreamCallback();
Expand Down Expand Up @@ -199,7 +199,7 @@ public function run()
$flags = EVLOOP_ONCE;
if (!$this->running || !$this->futureTickQueue->isEmpty()) {
$flags |= EVLOOP_NONBLOCK;
} elseif (!$this->readEvents && !$this->writeEvents && !$this->timerEvents->count()) {
} elseif (!$this->readEvents && !$this->writeEvents && !$this->timerEvents->count() && $this->signals->isEmpty()) {
break;
}

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24 changes: 5 additions & 19 deletions src/SignalsHandler.php
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Expand Up @@ -7,24 +7,10 @@
*/
final class SignalsHandler
{
private $loop;
private $timer;
private $signals = [];

public function __construct(LoopInterface $loop)
{
$this->loop = $loop;
}

public function add($signal, $listener)
{
if (empty($this->signals) && $this->timer === null) {
/**
* Timer to keep the loop alive as long as there are any signal handlers registered
*/
$this->timer = $this->loop->addPeriodicTimer(300, function () {});
}

if (!isset($this->signals[$signal])) {
$this->signals[$signal] = [];
}
Expand All @@ -48,11 +34,6 @@ public function remove($signal, $listener)
if (isset($this->signals[$signal]) && \count($this->signals[$signal]) === 0) {
unset($this->signals[$signal]);
}

if (empty($this->signals) && $this->timer instanceof TimerInterface) {
$this->loop->cancelTimer($this->timer);
$this->timer = null;
}
}

public function call($signal)
Expand All @@ -74,4 +55,9 @@ public function count($signal)

return \count($this->signals[$signal]);
}

public function isEmpty()
{
return !$this->signals;
}
}
6 changes: 3 additions & 3 deletions src/StreamSelectLoop.php
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Expand Up @@ -69,7 +69,7 @@ public function __construct()
$this->futureTickQueue = new FutureTickQueue();
$this->timers = new Timers();
$this->pcntl = extension_loaded('pcntl');
$this->signals = new SignalsHandler($this);
$this->signals = new SignalsHandler();
}

public function addReadStream($stream, $listener)
Expand Down Expand Up @@ -200,8 +200,8 @@ public function run()
$timeout = $timeout > PHP_INT_MAX ? PHP_INT_MAX : (int)$timeout;
}

// The only possible event is stream activity, so wait forever ...
} elseif ($this->readStreams || $this->writeStreams) {
// The only possible event is stream or signal activity, so wait forever ...
} elseif ($this->readStreams || $this->writeStreams || !$this->signals->isEmpty()) {
$timeout = null;

// There's nothing left to do ...
Expand Down
5 changes: 1 addition & 4 deletions tests/SignalsHandlerTest.php
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Expand Up @@ -2,7 +2,6 @@

namespace React\Tests\EventLoop;

use React\EventLoop\Factory;
use React\EventLoop\SignalsHandler;

final class SignalsHandlerTest extends TestCase
Expand All @@ -13,9 +12,7 @@ public function testEmittedEventsAndCallHandling()
$func = function () use (&$callCount) {
$callCount++;
};
$signals = new SignalsHandler(
Factory::create()
);
$signals = new SignalsHandler();

$this->assertSame(0, $callCount);

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0