C++ concepts: TimedLockable
From cppreference.com
                    
                                        
                    
                    
                                                            
                    The TimedLockable concept describes the characteristics of types that provide timed exclusive blocking semantics for execution agents (i.e. threads).
[edit] Requirements
For type L to be TimedLockable, the following conditions have to be satisfied for an object m of type L:
| Expression | Requires | Effects | 
|---|---|---|
| m.try_lock_for(duration) | Blocks for the provided duration the resource m. | |
| m.try_lock_until(time_limit) | Blocks the resource muntil the provided time limit point is reached. | 


