/**
* Acqiure mutex with given name.
* If $timeout is less than zero (which is default) method waits for
* mutex release forever.
* If $timeout is greater than zero, method will wait given amount
* of microseconds for mutex release.
* If $timeout is zero, method will return false immediatly if mutex
* is not free.
*
* @param string $name
* @param int $timeout
* @return bool
*/
public function acquire($name, $timeout = -1)
{
if (isset($this->acqiured[$name])) {
return true;
}
if ($timeout > 0) {
$endTime = microtime(true) + $timeout / 1000000;
}
$lockName = $this->getLockName($name);
$info = $this->getLockInfo();
while ($timeout <= 0 || microtime(true) < $endTime) {
if ($this->cache->add($lockName, $info, $this->expireTime)) {
$this->acqiured[$name] = true;
return true;
}
if ($timeout === 0) {
return false;
}
usleep($this->sleepTime);
}
return false;
}
