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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#pragma once
#include <coroutine>
#include <exception>
namespace vespalib::coro {
/**
* coroutine return type
*
* The coroutine is eager (will not suspend in initial_suspend) and
* self destroying (will not suspend in final_suspend). The return
* value gives no way of interacting with the coroutine. Without any
* co_await operations this acts similar to a normal subroutine. Note
* that letting a detached coroutine wait for a Lazy<T> will
* essentially attach it to the Lazy<T> as a continuation and resume
* it, but will require the Lazy<T> not to be deleted mid flight
* (started but not completed).
**/
struct Detached {
struct promise_type {
Detached get_return_object() { return {}; }
static std::suspend_never initial_suspend() noexcept { return {}; }
static std::suspend_never final_suspend() noexcept { return {}; }
static void unhandled_exception() { std::terminate(); }
void return_void() noexcept {};
};
};
}
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