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parallel/test/Threading/MutexTest.php

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<?php declare(strict_types = 1);
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namespace Amp\Concurrent\Test\Threading;
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use Amp\Concurrent\Threading\Mutex;
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use Amp\Concurrent\Test\TestCase;
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/**
* @group threading
* @requires extension pthreads
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*/
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class MutexTest extends TestCase {
public function testAcquire() {
\Amp\execute(function () {
$mutex = new Mutex();
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$lock = yield $mutex->acquire();
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$lock->release();
$this->assertTrue($lock->isReleased());
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});
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}
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public function testAcquireMultiple() {
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$this->assertRunTimeGreaterThan(function () {
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\Amp\execute(function () {
$mutex = new Mutex();
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$lock1 = yield $mutex->acquire();
\Amp\delay(500, function () use ($lock1) {
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$lock1->release();
});
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$lock2 = yield $mutex->acquire();
\Amp\delay(500, function () use ($lock2) {
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$lock2->release();
});
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$lock3 = yield $mutex->acquire();
\Amp\delay(500, function () use ($lock3) {
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$lock3->release();
});
});
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}, 1.5);
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}
}