Emmanuele Bassi b607927a43 Add atomically refcounted data
GArcBox is the atomic reference counting version of GRcBox. Unlike
GRcBox, the reference acquisition and release on GArcBox are guaranteed
to be atomic, and thus they can be performed from different threads.

This is similar to Rust's Arc<Box<T>> combination of traits.
2018-07-09 10:11:42 +01:00
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2018-07-09 10:11:42 +01:00
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