Cross-process read-write lock backed by SQLite. Allows concurrent shared readers or a single exclusive writer. The lock is reentrant within

Cross-process and cross-host reader/writer lock built on :class:`SoftFileLock` primitives. Use this class instead of :class:`~filelock.ReadW

Async wrapper around :class:`ReadWriteLock` for use in ``asyncio`` applications. Because Python's :mod:`sqlite3` module has no async API, al

Portable file lock based on file existence. Unlike :class:`UnixFileLock <filelock.UnixFileLock>` and :class:`WindowsFileLock <filelock.Windo

Raised when the lock could not be acquired in *timeout* seconds.

Uses the :func:`fcntl.flock` to hard lock the lock file on unix systems.

A context-aware object that will release the lock file when exiting.

Context-aware object that releases the async read/write lock on exit.

Async context-aware object that releases an :class:`AsyncSoftReadWriteLock` on exit.

Simply watches the existence of the lock file.

A context-aware object that will release the lock file when exiting.

Async wrapper around :class:`SoftReadWriteLock` for ``asyncio`` applications. The sync class's blocking filesystem operations run on a threa

Everything that exists only while a lock is held; ``None`` when the instance has no lock.

A dataclass which holds the context for a ``BaseAsyncFileLock`` object.

A thread local version of the ``FileLockContext`` class.

Uses the :func:`fcntl.flock` to hard lock the lock file on unix systems.

Uses the :func:`msvcrt.locking` to hard lock the lock file on windows systems.

Base class for asynchronous file locks. .. versionadded:: 3.15.0

Abstract base class for a file lock object. Provides a reentrant, cross-process exclusive lock backed by OS-level primitives. Subclasses imp

A dataclass which holds the context for a ``BaseFileLock`` object.

A thread local version of the ``FileLockContext`` class.

Uses the :func:`msvcrt.locking` function to hard lock the lock file on Windows systems. Lock file cleanup: Windows attempts to delet

Metaclass that handles singleton resolution when is_singleton=True. Singleton logic lives here rather than in ReadWriteLock.get_lock so that