coffee/continuable
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Naios 2015-07-02 20:15:50 +02:00
parent cc3b450096
commit 9ddd746367
1 changed files with 38 additions and 16 deletions
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48
include/Continuable.h
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@ -66,6 +66,9 @@ namespace detail
template<typename, typename, typename>
class multiple_result_storage_t;
template<std::size_t, typename, typename, typename>
struct multiple_result_storage_invoker_t;
/// Functional traits forward declaration.
template <typename...>
struct functional_traits;
@ -81,8 +84,8 @@ class Continuable
template<typename...>
friend class Continuable;
template<typename, typename, typename>
friend class detail::multiple_result_storage_t;
template<std::size_t, typename, typename, typename>
friend struct detail::multiple_result_storage_invoker_t;
public:
typedef Callback<_ATy...> CallbackFunction;
@ -506,13 +509,13 @@ namespace detail
std::mutex lock;
template <typename Sequence, std::size_t Offset>
template <typename, std::size_t>
struct result_store_sequencer;
template <std::size_t... Sequence, std::size_t Offset>
struct result_store_sequencer<fu::sequence<Sequence...>, Offset>
{
// Do nothing
// Do nothing when trying to store empty packs...
inline static void store(std::tuple<_RTy...>& result)
{
}
@ -528,17 +531,19 @@ namespace detail
multiple_result_storage_t(std::size_t partitions, Callback<_RTy...> callback_)
: partitions_left(partitions), callback(callback_) { }
template<std::size_t Position, typename... Args>
void store_result(Args&&... args)
template<std::size_t Offset, typename... Args>
void store(Args&&... args)
{
result_store_sequencer<
fu::sequence_of_t<sizeof...(Args)>,
Position
Offset
>::store(result, std::forward<Args>(args)...);
// TODO Improve the lock here
std::lock_guard<std::mutex> guard(lock);
{
std::cout << "storing..." << std::endl;
// If all partitions have completed invoke the final callback.
if (--partitions_left == 0)
{
@ -548,6 +553,21 @@ namespace detail
}
};
template<std::size_t Offset, typename... _ATy, typename... _RTy, typename... _PTy>
struct multiple_result_storage_invoker_t<Offset, fu::identity<_ATy...>, fu::identity<_RTy...>, fu::identity<_PTy...>>
{
template<typename... Args>
static void invoke(
std::shared_ptr<multiple_result_storage_t<fu::identity<_ATy...>, fu::identity<_RTy...>, fu::identity<_PTy...>>> storage,
Continuable<Args...>&& continuable)
{
continuable.invoke([storage](Args&&... args)
{
storage->store<Offset, Args...>(std::forward<Args>(args)...);
});
}
};
template<typename _ATy, typename _RTy, typename _PTy>
struct multiple_when_all_chainer_t_make_result;
@ -562,6 +582,9 @@ namespace detail
typedef multiple_result_storage_t<fu::identity<_ATy...>, fu::identity<_RTy...>, fu::identity<_PTy...>> ResultStorage;
template <std::size_t Offset>
using invoker_at = multiple_result_storage_invoker_t<Offset, fu::identity<_ATy...>, fu::identity<_RTy...>, fu::identity<_PTy...>>;
typedef std::shared_ptr<ResultStorage> shared_result_t;
typedef std::tuple<_ATy...> shared_args_t;
@ -576,15 +599,14 @@ namespace detail
template <typename _CTy, typename Arguments>
inline static void invoke(shared_result_t storage, Arguments&& args, _CTy&& current)
{
auto ret =
// Invoke the continuable from the result storage
invoker_at<Position>::invoke(
storage,
fu::invoke_from_tuple(
traits_t::correct(std::forward<_CTy>(current)),
std::forward<Arguments>(args)
);
std::forward<Arguments>(args)));
// TODO invalidate tuple
std::cout << "invoking: " << Position << " " << typeid(ret).name() << std::endl;
// std::cout << "invoking: " << Position << " " << typeid(ret).name() << std::endl;
}
/// Invoke and pass recursive to itself