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<?php
namespace React\Tests\EventLoop;
use React\EventLoop\LoopInterface;
use React\EventLoop\StreamSelectLoop;
class StreamSelectLoopTest extends AbstractLoopTest
{
protected function tearDown()
{
parent::tearDown();
if (strncmp($this->getName(false), 'testSignal', 10) === 0 && extension_loaded('pcntl')) {
$this->resetSignalHandlers();
}
}
public function createLoop()
{
return new StreamSelectLoop();
}
public function testStreamSelectTimeoutEmulation()
{
$this->loop->addTimer(
0.05,
$this->expectCallableOnce()
);
$start = microtime(true);
$this->loop->run();
$end = microtime(true);
$interval = $end - $start;
$this->assertGreaterThan(0.04, $interval);
}
public function signalProvider()
{
return array(
array('SIGUSR1'),
array('SIGHUP'),
array('SIGTERM'),
);
}
/**
* Test signal interrupt when no stream is attached to the loop
* @dataProvider signalProvider
*/
public function testSignalInterruptNoStream($signal)
{
if (!extension_loaded('pcntl')) {
$this->markTestSkipped('"pcntl" extension is required to run this test.');
}
// dispatch signal handler every 10ms for 0.1s
$check = $this->loop->addPeriodicTimer(0.01, function() {
pcntl_signal_dispatch();
});
$loop = $this->loop;
$loop->addTimer(0.1, function () use ($check, $loop) {
$loop->cancelTimer($check);
});
$handled = false;
$this->assertTrue(pcntl_signal(constant($signal), function () use (&$handled) {
$handled = true;
}));
// spawn external process to send signal to current process id
$this->forkSendSignal($signal);
$this->loop->run();
$this->assertTrue($handled);
}
/**
* Test signal interrupt when a stream is attached to the loop
* @dataProvider signalProvider
*/
public function testSignalInterruptWithStream($signal)
{
if (!extension_loaded('pcntl')) {
$this->markTestSkipped('"pcntl" extension is required to run this test.');
}
// dispatch signal handler every 10ms
$this->loop->addPeriodicTimer(0.01, function() {
pcntl_signal_dispatch();
});
// add stream to the loop
$loop = $this->loop;
list($writeStream, $readStream) = $this->createSocketPair();
$loop->addReadStream($readStream, function ($stream) use ($loop) {
/** @var $loop LoopInterface */
$read = fgets($stream);
if ($read === "end loop\n") {
$loop->stop();
}
});
$this->loop->addTimer(0.1, function() use ($writeStream) {
fwrite($writeStream, "end loop\n");
});
$handled = false;
$this->assertTrue(pcntl_signal(constant($signal), function () use (&$handled) {
$handled = true;
}));
// spawn external process to send signal to current process id
$this->forkSendSignal($signal);
$this->loop->run();
$this->assertTrue($handled);
}
/**
* reset all signal handlers to default
*/
protected function resetSignalHandlers()
{
foreach($this->signalProvider() as $signal) {
pcntl_signal(constant($signal[0]), SIG_DFL);
}
}
/**
* fork child process to send signal to current process id
*/
protected function forkSendSignal($signal)
{
$currentPid = posix_getpid();
$childPid = pcntl_fork();
if ($childPid == -1) {
$this->fail("Failed to fork child process!");
} else if ($childPid === 0) {
// this is executed in the child process
usleep(20000);
posix_kill($currentPid, constant($signal));
die();
}
}
}
|
