std::experimental::latch::latch

From cppreference.com
< cpp‎ | experimental‎ | latch
explicit latch( ptrdiff_t value );
(1) (concurrency TS)
latch( const latch & ) = delete;
(2) (concurrency TS)
1) Constructs a latch and initializes its internal counter.
2) Copy constructor is deleted. latch is not copyable.

[edit] Parameters

value - the initial value of the internal counter; must be non-negative