# Type Definition parking_lot::MappedMutexGuard [−] [src]

    type MappedMutexGuard<'a, T> = MappedMutexGuard<'a, RawMutex, T>;

An RAII mutex guard returned by `MutexGuard::map`, which can point to a subfield of the protected data.

The main difference between `MappedMutexGuard` and `MutexGuard` is that the former doesn’t support temporarily unlocking and re-locking, since that could introduce soundness issues if the locked object is modified by another thread.