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basic_system_executor::query (2 of 4 overloads)

Query the current value of the context property.

static system_context & query(
    execution::context_t );

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

For example:

boost::asio::system_executor ex;
boost::asio::system_context& pool = boost::asio::query(
    ex, boost::asio::execution::context);