transfer_awaitable.hpp

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#pragma once
 
#include "boost/capy/concept/io_awaitable.hpp"
#include "boost/capy/continuation.hpp"
#include "boost/capy/ex/io_env.hpp"
#include "boost/capy/io_result.hpp"
#include <libusb-1.0/libusb.h>
 
namespace co_usb
{
 
struct transfer_awaitable
{
    transfer_awaitable(libusb_transfer *tfer) noexcept;
 
    bool await_ready() noexcept;
 
    std::coroutine_handle<> await_suspend(std::coroutine_handle<> h,
                                          boost::capy::io_env const *env);
 
    boost::capy::io_result<size_t> await_resume();
 
    libusb_transfer *transfer = nullptr;
    struct cb_data
    {
        boost::capy::io_env const *io_env = nullptr;
        boost::capy::continuation cont;
    } m_data;
};
 
static_assert(boost::capy::IoAwaitable<transfer_awaitable>);
 
} // namespace co_usb