/**
* Allocates a new variable into memory.
* @param &mixed $var Variable reference to count.
* @return int Variable address in the memory collection
* @throws OutOfMemoryException
*/
public static function alloc(&$var)
{
$memory = self::getInstance();
GarbageCollector::collect();
// GC checks cycles to know if it has to actually collect or not
if (self::$lastAddress < PHP_INT_MAX) {
$memory[++self::$lastAddress] =& $var;
return self::$lastAddress;
} elseif (count($memory) == PHP_INT_MAX) {
throw new OutOfMemoryException();
} else {
do {
$address = rand(1, PHP_INT_MAX);
} while (isset($memory[$address]));
$memory[$address] =& $var;
return $address;
}
}
