Mutex BasicLockable

[connorfuhrman]

Originating Project/Creator	Connor Fuhrman
Affected Component	None
Affected Architectures(s)	None
Related Issue(s)	#1229
Has Unit Tests (y/n)	y
Builds Without Errors (y/n)	y
Unit Tests Pass (y/n)	y
Documentation Included (y/n)	y

---

Change Description

Added unlock alias for Os::Mutex type.

Rationale

Os::Mutex is now BasicLoackable.

Testing/Review Recommendations

Added test in Os folder but is really only a compile-time check. Perhaps there is a better way to assert at compile-time that the BaiscLockable requirements are satisfied. For now a std::lock_guard is instantiated with an Os::Mutex parameter to show correctness.

Future Work

When/if F' C++ standard bumps to C++17 or above Mutex could be upgraded to satisfy the Lockable requirement.

[LeStarch]

@timcanham is this going to affect you? I think the C++11 feature is limited to the UTs and projects who use this feature. Thoughts?

[timcanham]

@LeStarch I don't see that it could. It's just another public method, and we won't try to run those unit tests on the target.

[LeStarch]

Thanks!