Boost C++ Libraries

...one of the most highly regarded and expertly designed C++ library projects in the world. — Herb Sutter and Andrei Alexandrescu, C++ Coding Standards

thread_pool::basic_executor_type::query (3 of 3 overloads)

Query the current value of the outstanding_work property.

static constexpr execution::outstanding_work_t query(
    execution::outstanding_work_t );

Do not call this function directly. It is intended for use with the query customisation point.

For example:

auto ex = my_thread_pool.executor();
if (boost::asio::query(ex, boost::asio::execution::outstanding_work)
      == boost::asio::execution::outstanding_work.tracked)
  ...