/**
* @param string $subject
* @param boolean $exclusiveLock TRUE to, acquire an exclusive (write) lock, FALSE for a shared (read) lock.
* @throws LockNotAcquiredException
* @throws \TYPO3\Flow\Utility\Exception
* @return void
*/
public function acquire($subject, $exclusiveLock)
{
if ($this->isWindowsOS()) {
return;
}
if (self::$temporaryDirectory === null) {
if (Bootstrap::$staticObjectManager === null || !Bootstrap::$staticObjectManager->isRegistered(\TYPO3\Flow\Utility\Environment::class)) {
throw new LockNotAcquiredException('Environment object could not be accessed', 1386680952);
}
$environment = Bootstrap::$staticObjectManager->get(\TYPO3\Flow\Utility\Environment::class);
$temporaryDirectory = Files::concatenatePaths(array($environment->getPathToTemporaryDirectory(), 'Lock'));
Files::createDirectoryRecursively($temporaryDirectory);
self::$temporaryDirectory = $temporaryDirectory;
}
$this->lockFileName = Files::concatenatePaths(array(self::$temporaryDirectory, md5($subject)));
if (($this->filePointer = @fopen($this->lockFileName, 'r')) === false) {
if (($this->filePointer = @fopen($this->lockFileName, 'w')) === false) {
throw new LockNotAcquiredException(sprintf('Lock file "%s" could not be opened', $this->lockFileName), 1386520596);
}
}
if ($exclusiveLock === false && flock($this->filePointer, LOCK_SH) === true) {
// Shared lock acquired
} elseif ($exclusiveLock === true && flock($this->filePointer, LOCK_EX) === true) {
// Exclusive lock acquired
} else {
throw new LockNotAcquiredException(sprintf('Could not lock file "%s"', $this->lockFileName), 1386520597);
}
}
/**
* Sets the temporaryDirectory as static variable for the lock class.
*
* @throws LockNotAcquiredException
* @throws \TYPO3\Flow\Utility\Exception
* return void;
*/
protected function configureTemporaryDirectory()
{
if (Bootstrap::$staticObjectManager === null || !Bootstrap::$staticObjectManager->isRegistered(\TYPO3\Flow\Utility\Environment::class)) {
throw new LockNotAcquiredException('Environment object could not be accessed', 1386680952);
}
$environment = Bootstrap::$staticObjectManager->get('TYPO3\\Flow\\Utility\\Environment');
$temporaryDirectory = Files::concatenatePaths([$environment->getPathToTemporaryDirectory(), 'Lock']);
Files::createDirectoryRecursively($temporaryDirectory);
self::$temporaryDirectory = $temporaryDirectory;
}