AlreadyLockedException

Note

This is a point-in-time snapshot of the API documentation from January 2026. Going forward, we will not be maintaining a public copy of these references, and recommend users to refer to the built-in signature helpers available in the Hack LSP instead for complete and up-to-date information.

Indicates that a lock failed, because the file is already locked

This class does not extend OS\ErrnoException as an EWOULDBLOCK after flock($fd, LOCK_NB) is expected rather than an error; this exception is thrown when the caller has explicitly requested an exception for these cases.

Interface Synopsis

namespace HH\Lib\File;

final class AlreadyLockedException extends \Exception {...}