# Concurrency

Concurrency
ISO C++ library mutex thread future condition_variable

Facilities for concurrent operation, and control thereof.

## API Reference

All items are declared in one of four standard header files.

In header `mutex`, class template mutex and variants, class once_flag, and class template unique_lock.

In header `condition_variable`, classes condition_variable and condition_variable_any.

In header `thread`, class thread and namespace `this_thread`.

In header `future`, class template future and class template shared_future, class template promise, and packaged_task.

Full API details.