This mutex doesn't lock at all. It implements the compare-and-swap
approach. I.e. it will repeat executing the code block until it wasn't
modified in between. Use this only when you know that concurrency is
a rare event.
/**
* Tests that the code is executed more times.
*
* @test
*/
public function testIteration()
{
$i = 0;
$mutex = new CASMutex();
$mutex->synchronized(function () use($mutex, &$i) {
$i++;
if ($i > 1) {
$mutex->notify();
}
});
$this->assertEquals(2, $i);
}
