basic_yield_context

A completion token that represents the currently executing coroutine.

template<
    typename Handler>
class basic_yield_context

Types

Name	Description
callee_type	The coroutine callee type, used by the implementation.
caller_type	The coroutine caller type, used by the implementation.

Member Functions

Name	Description
basic_yield_context [constructor]	Construct a yield context to represent the specified coroutine. — Construct a yield context from another yield context type.
operator[]	Return a yield context that sets the specified error_code.

The basic_yield_context class is a completion token type that is used to represent the currently executing stackful coroutine. A basic_yield_context object may be passed as a completion token to an asynchronous operation. For example:

template <typename Handler>
void my_coroutine(basic_yield_context<Handler> yield)
{
  ...
  std::size_t n = my_socket.async_read_some(buffer, yield);
  ...
}

The initiating function (async_read_some in the above example) suspends the current coroutine. The coroutine is resumed when the asynchronous operation completes, and the result of the operation is returned.

Requirements

Header: boost/asio/spawn.hpp

Convenience header: None