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-rw-r--r--Rx/v2/src/rxcpp/operators/rx-timeout.hpp284
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diff --git a/Rx/v2/src/rxcpp/operators/rx-timeout.hpp b/Rx/v2/src/rxcpp/operators/rx-timeout.hpp
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--- a/Rx/v2/src/rxcpp/operators/rx-timeout.hpp
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-// Copyright (c) Microsoft Open Technologies, Inc. All rights reserved. See License.txt in the project root for license information.
-
-#pragma once
-
-/*! \file rx-timeout.hpp
-
- \brief Return an observable that terminates with timeout_error if a particular timespan has passed without emitting another item from the source observable.
-
- \tparam Duration the type of time interval.
- \tparam Coordination the type of the scheduler (optional).
-
- \param period the period of time wait for another item from the source observable.
- \param coordination the scheduler to manage timeout for each event (optional).
-
- \return Observable that terminates with an error if a particular timespan has passed without emitting another item from the source observable.
-
- \sample
- \snippet timeout.cpp timeout sample
- \snippet output.txt timeout sample
-*/
-
-#if !defined(RXCPP_OPERATORS_RX_TIMEOUT_HPP)
-#define RXCPP_OPERATORS_RX_TIMEOUT_HPP
-
-#include "../rx-includes.hpp"
-
-namespace rxcpp {
-
-class timeout_error: public std::runtime_error
-{
- public:
- explicit timeout_error(const std::string& msg):
- std::runtime_error(msg)
- {}
-};
-
-namespace operators {
-
-namespace detail {
-
-template<class... AN>
-struct timeout_invalid_arguments {};
-
-template<class... AN>
-struct timeout_invalid : public rxo::operator_base<timeout_invalid_arguments<AN...>> {
- using type = observable<timeout_invalid_arguments<AN...>, timeout_invalid<AN...>>;
-};
-template<class... AN>
-using timeout_invalid_t = typename timeout_invalid<AN...>::type;
-
-template<class T, class Duration, class Coordination>
-struct timeout
-{
- typedef rxu::decay_t<T> source_value_type;
- typedef rxu::decay_t<Coordination> coordination_type;
- typedef typename coordination_type::coordinator_type coordinator_type;
- typedef rxu::decay_t<Duration> duration_type;
-
- struct timeout_values
- {
- timeout_values(duration_type p, coordination_type c)
- : period(p)
- , coordination(c)
- {
- }
-
- duration_type period;
- coordination_type coordination;
- };
- timeout_values initial;
-
- timeout(duration_type period, coordination_type coordination)
- : initial(period, coordination)
- {
- }
-
- template<class Subscriber>
- struct timeout_observer
- {
- typedef timeout_observer<Subscriber> this_type;
- typedef rxu::decay_t<T> value_type;
- typedef rxu::decay_t<Subscriber> dest_type;
- typedef observer<T, this_type> observer_type;
-
- struct timeout_subscriber_values : public timeout_values
- {
- timeout_subscriber_values(composite_subscription cs, dest_type d, timeout_values v, coordinator_type c)
- : timeout_values(v)
- , cs(std::move(cs))
- , dest(std::move(d))
- , coordinator(std::move(c))
- , worker(coordinator.get_worker())
- , index(0)
- {
- }
-
- composite_subscription cs;
- dest_type dest;
- coordinator_type coordinator;
- rxsc::worker worker;
- mutable std::size_t index;
- };
- typedef std::shared_ptr<timeout_subscriber_values> state_type;
- state_type state;
-
- timeout_observer(composite_subscription cs, dest_type d, timeout_values v, coordinator_type c)
- : state(std::make_shared<timeout_subscriber_values>(timeout_subscriber_values(std::move(cs), std::move(d), v, std::move(c))))
- {
- auto localState = state;
-
- auto disposer = [=](const rxsc::schedulable&){
- localState->cs.unsubscribe();
- localState->dest.unsubscribe();
- localState->worker.unsubscribe();
- };
- auto selectedDisposer = on_exception(
- [&](){ return localState->coordinator.act(disposer); },
- localState->dest);
- if (selectedDisposer.empty()) {
- return;
- }
-
- localState->dest.add([=](){
- localState->worker.schedule(selectedDisposer.get());
- });
- localState->cs.add([=](){
- localState->worker.schedule(selectedDisposer.get());
- });
-
- auto work = [v, localState](const rxsc::schedulable&) {
- auto new_id = ++localState->index;
- auto produce_time = localState->worker.now() + localState->period;
-
- localState->worker.schedule(produce_time, produce_timeout(new_id, localState));
- };
- auto selectedWork = on_exception(
- [&](){return localState->coordinator.act(work);},
- localState->dest);
- if (selectedWork.empty()) {
- return;
- }
- localState->worker.schedule(selectedWork.get());
- }
-
- static std::function<void(const rxsc::schedulable&)> produce_timeout(std::size_t id, state_type state) {
- auto produce = [id, state](const rxsc::schedulable&) {
- if(id != state->index)
- return;
-
- state->dest.on_error(rxu::make_error_ptr(rxcpp::timeout_error("timeout has occurred")));
- };
-
- auto selectedProduce = on_exception(
- [&](){ return state->coordinator.act(produce); },
- state->dest);
- if (selectedProduce.empty()) {
- return std::function<void(const rxsc::schedulable&)>();
- }
-
- return std::function<void(const rxsc::schedulable&)>(selectedProduce.get());
- }
-
- void on_next(T v) const {
- auto localState = state;
- auto work = [v, localState](const rxsc::schedulable&) {
- auto new_id = ++localState->index;
- auto produce_time = localState->worker.now() + localState->period;
-
- localState->dest.on_next(v);
- localState->worker.schedule(produce_time, produce_timeout(new_id, localState));
- };
- auto selectedWork = on_exception(
- [&](){return localState->coordinator.act(work);},
- localState->dest);
- if (selectedWork.empty()) {
- return;
- }
- localState->worker.schedule(selectedWork.get());
- }
-
- void on_error(rxu::error_ptr e) const {
- auto localState = state;
- auto work = [e, localState](const rxsc::schedulable&) {
- localState->dest.on_error(e);
- };
- auto selectedWork = on_exception(
- [&](){ return localState->coordinator.act(work); },
- localState->dest);
- if (selectedWork.empty()) {
- return;
- }
- localState->worker.schedule(selectedWork.get());
- }
-
- void on_completed() const {
- auto localState = state;
- auto work = [localState](const rxsc::schedulable&) {
- localState->dest.on_completed();
- };
- auto selectedWork = on_exception(
- [&](){ return localState->coordinator.act(work); },
- localState->dest);
- if (selectedWork.empty()) {
- return;
- }
- localState->worker.schedule(selectedWork.get());
- }
-
- static subscriber<T, observer_type> make(dest_type d, timeout_values v) {
- auto cs = composite_subscription();
- auto coordinator = v.coordination.create_coordinator();
-
- return make_subscriber<T>(cs, observer_type(this_type(cs, std::move(d), std::move(v), std::move(coordinator))));
- }
- };
-
- template<class Subscriber>
- auto operator()(Subscriber dest) const
- -> decltype(timeout_observer<Subscriber>::make(std::move(dest), initial)) {
- return timeout_observer<Subscriber>::make(std::move(dest), initial);
- }
-};
-
-}
-
-/*! @copydoc rx-timeout.hpp
-*/
-template<class... AN>
-auto timeout(AN&&... an)
- -> operator_factory<timeout_tag, AN...> {
- return operator_factory<timeout_tag, AN...>(std::make_tuple(std::forward<AN>(an)...));
-}
-
-}
-
-template<>
-struct member_overload<timeout_tag>
-{
- template<class Observable, class Duration,
- class Enabled = rxu::enable_if_all_true_type_t<
- is_observable<Observable>,
- rxu::is_duration<Duration>>,
- class SourceValue = rxu::value_type_t<Observable>,
- class Timeout = rxo::detail::timeout<SourceValue, rxu::decay_t<Duration>, identity_one_worker>>
- static auto member(Observable&& o, Duration&& d)
- -> decltype(o.template lift<SourceValue>(Timeout(std::forward<Duration>(d), identity_current_thread()))) {
- return o.template lift<SourceValue>(Timeout(std::forward<Duration>(d), identity_current_thread()));
- }
-
- template<class Observable, class Coordination, class Duration,
- class Enabled = rxu::enable_if_all_true_type_t<
- is_observable<Observable>,
- is_coordination<Coordination>,
- rxu::is_duration<Duration>>,
- class SourceValue = rxu::value_type_t<Observable>,
- class Timeout = rxo::detail::timeout<SourceValue, rxu::decay_t<Duration>, rxu::decay_t<Coordination>>>
- static auto member(Observable&& o, Coordination&& cn, Duration&& d)
- -> decltype(o.template lift<SourceValue>(Timeout(std::forward<Duration>(d), std::forward<Coordination>(cn)))) {
- return o.template lift<SourceValue>(Timeout(std::forward<Duration>(d), std::forward<Coordination>(cn)));
- }
-
- template<class Observable, class Coordination, class Duration,
- class Enabled = rxu::enable_if_all_true_type_t<
- is_observable<Observable>,
- is_coordination<Coordination>,
- rxu::is_duration<Duration>>,
- class SourceValue = rxu::value_type_t<Observable>,
- class Timeout = rxo::detail::timeout<SourceValue, rxu::decay_t<Duration>, rxu::decay_t<Coordination>>>
- static auto member(Observable&& o, Duration&& d, Coordination&& cn)
- -> decltype(o.template lift<SourceValue>(Timeout(std::forward<Duration>(d), std::forward<Coordination>(cn)))) {
- return o.template lift<SourceValue>(Timeout(std::forward<Duration>(d), std::forward<Coordination>(cn)));
- }
-
- template<class... AN>
- static operators::detail::timeout_invalid_t<AN...> member(const AN&...) {
- std::terminate();
- return {};
- static_assert(sizeof...(AN) == 10000, "timeout takes (optional Coordination, required Duration) or (required Duration, optional Coordination)");
- }
-};
-
-}
-
-#endif
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