Class CombinedLock

xarray/backends/locks.py:210–239

A combination of multiple locks. Like a locked door, a CombinedLock is locked if any of its constituent locks are locked.

class CombinedLock(Lock):
    """A combination of multiple locks.

    Like a locked door, a CombinedLock is locked if any of its constituent
    locks are locked.
    """

    def __init__(self, locks: Sequence[Lock]):
        self.locks = tuple(set(locks))  # remove duplicates

    def acquire(self, blocking=True):
        return all(acquire(lock, blocking=blocking) for lock in self.locks)

    def release(self):
        for lock in self.locks:
            lock.release()

    def __enter__(self):
        for lock in self.locks:
            lock.__enter__()

    def __exit__(self, *args):
        for lock in self.locks:
            lock.__exit__(*args)

    def locked(self):
        return any(lock.locked() for lock in self.locks)

    def __repr__(self):
        return f"CombinedLock({list(self.locks)!r})"


class DummyLock(Lock):