Warning: Installing the same signal on different instances of this interface is deemed undefined behavior.
Implementations MAY try to detect this, if possible, but are not required to. This is due to technical
limitations of the signals being registered globally per process.
Multiple watchers on the same signal MAY be executed in any order.
| public static onSignal ( integer $signo, callable $callback, mixed $data = null ) : string | ||
| $signo | integer | The signal number to monitor. |
| $callback | callable | |
| $data | mixed | Arbitrary data given to the callback function as the $data parameter. |
| 리턴 | string | An unique identifier that can be used to cancel, enable or disable the watcher. |
public function run(Container $container, callable $action)
{
$logger = LoopConfig::getLogger();
if ($this->running === 0) {
foreach ($this->loggers as $handler) {
$logger->addHandler($handler);
}
}
$this->running++;
try {
$buffer = '';
if ($this->ipc) {
ob_start(function (string $data, int $phase) use(&$buffer) {
$buffer .= $data;
return '';
}, 1, \PHP_OUTPUT_HANDLER_FLUSHABLE);
}
Loop::execute(function () use($container, $action, $logger, &$buffer) {
Loop::setErrorHandler(function (\Throwable $e) use($logger) {
$logger->critical('', ['exception' => $e]);
});
$watcher = Loop::repeat(500, function () use(&$buffer, $logger) {
if ($buffer !== '') {
try {
$this->ipc->sendOutput($buffer);
} finally {
$buffer = '';
}
}
});
Loop::unreference($watcher);
if ($this->contextName === 'development') {
$locator = $container->get(ResourceLocator::class);
$watcher = Loop::repeat(5000, function () use($locator) {
$locator->syncFiles();
});
Loop::unreference($watcher);
}
if ($this->ipc) {
$this->ipc->run();
}
$signal = function () {
if ($this->ipc) {
$this->ipc->stop();
}
Loop::stop();
};
// Shutdown on SIGTERM.
try {
Loop::onSignal(15, $signal);
} catch (UnsupportedFeatureException $e) {
// signal handling is not available...
}
$action();
});
} finally {
if ($this->ipc) {
\ob_end_clean();
}
$this->running--;
if ($this->running === 0) {
foreach ($this->loggers as $handler) {
$logger->removeHandler($handler);
}
}
}
}
