begin rewrite: add lionkor/commandline

include/RWMutex.h

@@ -1,19 +0,0 @@
-// Author: lionkor
-#pragma once
-
-/*
- * An RWMutex allows multiple simultaneous readlocks but only one writelock at a time,
- * and write locks and read locks are mutually exclusive.
- */
-
-#include <shared_mutex>
-
-// Use ReadLock(m) and WriteLock(m) to lock it.
-using RWMutex = std::shared_mutex;
-// Construct with an RWMutex as a non-const reference.
-// locks the mutex in lock_shared mode (for reading). Locking in a thread that already owns a lock
-// i.e. locking multiple times successively is UB. Construction may be blocking. Destruction is guaranteed to release the lock.
-using ReadLock = std::shared_lock<RWMutex>;
-// Construct with an RWMutex as a non-const reference.
-// locks the mutex for writing. Construction may be blocking. Destruction is guaranteed to release the lock.
-using WriteLock = std::unique_lock<RWMutex>;