c++20 coroutine compatibility

[cyboy22]

Hi - I intend to use a Boost Redis (which leverages the c++20 coroutine functionality) for my cache and would like to use OZO for interacting with my PostgreSQL database. Are there any compatibility (or incompatibility) issues from a coroutine implementation perspective?

[cyboy22]

The Boost Redis API uses "co_spawn" whereas I understand OZO uses "spawn" under the hood but appears to work with the following syntax:

        const auto selectConnection =  co_await ozo::request(conn_info[ios],
                                                             selectQuery,
                                                             1s,
                                                             ozo::into(selectQueryResult),
                                                             use_awaitable);

[thed636]

Hi! OZO uses no spawn or other stackless/stackful natural coroutine mechanisms under the hood (except boost::asio::coroutine, which is not a coroutine in nature). The library uses universal asynchronous API and is compatible with all the completion tokens from Boost.Asio.