/**
* @param string $key
* @return kLockBase
*/
public static function grabLocalLock($key)
{
if (!function_exists('apc_add')) {
return null;
}
require_once __DIR__ . '/../cache/kApcCacheWrapper.php';
// can be called before autoloader
$lock = new kLockBase(new kApcCacheWrapper(), $key);
if (!$lock->lock()) {
return null;
}
return $lock;
}
/**
* Load and cache the class map
*/
private static function loadClassMap()
{
if (self::$_classMapFileLocation && !self::$_noCache && self::loadClassMapFromCache()) {
self::saveToApc();
return;
}
require_once __DIR__ . '/general/kLockBase.php';
$lock = kLockBase::grabLocalLock('KAutoloader');
// try loading again - some other instance may have created the cache while we waited for the lock
if ($lock && self::loadClassMapFromCache()) {
$lock->unlock();
return;
}
// cached map doesn't exists, rebuild the cache map
if (self::$_classPath === null) {
self::setDefaultClassPath();
}
foreach (self::$_classPath as $dir) {
if (strpos($dir, DIRECTORY_SEPARATOR . "*") == strlen($dir) - 2) {
$dir = substr($dir, 0, strlen($dir) - 2);
$recursive = true;
} else {
$recursive = false;
}
self::scanDirectory($dir, $recursive);
}
if (self::$_noCache === false && self::$_classMapFileLocation) {
self::saveToApc();
$dirName = dirname(self::$_classMapFileLocation);
if (!is_dir($dirName)) {
mkdir($dirName);
chmod($dirName, 0755);
}
// save the cached map
$bytesWritten = self::safeFilePutContents(self::$_classMapFileLocation, serialize(self::$_classMap));
if (!$bytesWritten) {
$folderPermission = substr(decoct(fileperms(dirname(self::$_classMapFileLocation))), 2);
error_log("PHP Class map could not be saved to path [" . self::$_classMapFileLocation . "] folder permissions [{$folderPermission}]");
die("PHP Class map could not be saved");
}
}
if ($lock) {
$lock->unlock();
}
}
