Module process_lock 

Process-held cross-platform file locks.

Functions

create_new_lock_file

Creates a new lock file and fails if the path already exists.

lock_descriptor

Locks an immutable descriptor without locking its readable byte range on Windows. Closing the file releases the marker; callers must not call unlock for this lock.

lock_exclusive

Acquires an exclusive process-held lock, blocking until it becomes available.

lock_shared

Pins immutable data against cooperative exclusive eviction until the file closes.

open_existing_lock_file

Opens an existing lock file without creating a missing path.

open_lock_file

Opens or creates an owner-only lock file without truncating it.

try_lock_exclusive

Attempts to acquire an exclusive process-held lock without blocking.

unlock

Releases an exclusive process-held lock.