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

    type MappedReentrantMutexGuard<'a, T> = MappedReentrantMutexGuard<'a, RawMutex, RawThreadId, T>;

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

The main difference between `MappedReentrantMutexGuard` and `ReentrantMutexGuard` 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.