Cleanup cloudabi mutexes and condvars This gets rid of lots of unnecessary unsafety. All the AtomicU32s were wrapped in UnsafeCell or UnsafeCell<MaybeUninit>, and raw pointers were used to get to the AtomicU32 inside. This change cleans that up by using AtomicU32 directly. Also replaces a UnsafeCell<u32> by a safer Cell<u32>. @rustbot modify labels: +C-cleanup |
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