feat add rxcpp
This commit is contained in:
tqcq
281
3party/rxcpp/operators/rx-window_time_count.hpp
Normal file
281
3party/rxcpp/operators/rx-window_time_count.hpp
Normal file
@ -0,0 +1,281 @@
|
||||
// Copyright (c) Microsoft Open Technologies, Inc. All rights reserved. See License.txt in the project root for license information.
|
||||
|
||||
#pragma once
|
||||
|
||||
/*! \file rx-window_time_count.hpp
|
||||
|
||||
\brief Return an observable that emits connected, non-overlapping windows of items from the source observable that were emitted during a fixed duration of time or when the window has reached maximum capacity (whichever occurs first), on the specified scheduler.
|
||||
|
||||
\tparam Duration the type of time intervals.
|
||||
\tparam Coordination the type of the scheduler (optional).
|
||||
|
||||
\param period the period of time each window collects items before it is completed and replaced with a new window.
|
||||
\param count the maximum size of each window before it is completed and new window is created.
|
||||
\param coordination the scheduler for the windows (optional).
|
||||
|
||||
\return Observable that emits connected, non-overlapping windows of items from the source observable that were emitted during a fixed duration of time or when the window has reached maximum capacity (whichever occurs first).
|
||||
|
||||
\sample
|
||||
\snippet window.cpp window period+count+coordination sample
|
||||
\snippet output.txt window period+count+coordination sample
|
||||
|
||||
\sample
|
||||
\snippet window.cpp window period+count sample
|
||||
\snippet output.txt window period+count sample
|
||||
*/
|
||||
|
||||
#if !defined(RXCPP_OPERATORS_RX_WINDOW_WITH_TIME_OR_COUNT_HPP)
|
||||
#define RXCPP_OPERATORS_RX_WINDOW_WITH_TIME_OR_COUNT_HPP
|
||||
|
||||
#include "../rx-includes.hpp"
|
||||
|
||||
namespace rxcpp {
|
||||
|
||||
namespace operators {
|
||||
|
||||
namespace detail {
|
||||
|
||||
template<class... AN>
|
||||
struct window_with_time_or_count_invalid_arguments {};
|
||||
|
||||
template<class... AN>
|
||||
struct window_with_time_or_count_invalid : public rxo::operator_base<window_with_time_or_count_invalid_arguments<AN...>> {
|
||||
using type = observable<window_with_time_or_count_invalid_arguments<AN...>, window_with_time_or_count_invalid<AN...>>;
|
||||
};
|
||||
template<class... AN>
|
||||
using window_with_time_or_count_invalid_t = typename window_with_time_or_count_invalid<AN...>::type;
|
||||
|
||||
template<class T, class Duration, class Coordination>
|
||||
struct window_with_time_or_count
|
||||
{
|
||||
typedef rxu::decay_t<T> source_value_type;
|
||||
typedef observable<source_value_type> 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 window_with_time_or_count_values
|
||||
{
|
||||
window_with_time_or_count_values(duration_type p, int n, coordination_type c)
|
||||
: period(p)
|
||||
, count(n)
|
||||
, coordination(c)
|
||||
{
|
||||
}
|
||||
duration_type period;
|
||||
int count;
|
||||
coordination_type coordination;
|
||||
};
|
||||
window_with_time_or_count_values initial;
|
||||
|
||||
window_with_time_or_count(duration_type period, int count, coordination_type coordination)
|
||||
: initial(period, count, coordination)
|
||||
{
|
||||
}
|
||||
|
||||
template<class Subscriber>
|
||||
struct window_with_time_or_count_observer
|
||||
{
|
||||
typedef window_with_time_or_count_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 window_with_time_or_count_subscriber_values : public window_with_time_or_count_values
|
||||
{
|
||||
window_with_time_or_count_subscriber_values(composite_subscription cs, dest_type d, window_with_time_or_count_values v, coordinator_type c)
|
||||
: window_with_time_or_count_values(std::move(v))
|
||||
, cs(std::move(cs))
|
||||
, dest(std::move(d))
|
||||
, coordinator(std::move(c))
|
||||
, worker(coordinator.get_worker())
|
||||
, cursor(0)
|
||||
, subj_id(0)
|
||||
{
|
||||
}
|
||||
composite_subscription cs;
|
||||
dest_type dest;
|
||||
coordinator_type coordinator;
|
||||
rxsc::worker worker;
|
||||
mutable int cursor;
|
||||
mutable int subj_id;
|
||||
mutable rxcpp::subjects::subject<T> subj;
|
||||
};
|
||||
typedef std::shared_ptr<window_with_time_or_count_subscriber_values> state_type;
|
||||
state_type state;
|
||||
|
||||
window_with_time_or_count_observer(composite_subscription cs, dest_type d, window_with_time_or_count_values v, coordinator_type c)
|
||||
: state(std::make_shared<window_with_time_or_count_subscriber_values>(window_with_time_or_count_subscriber_values(std::move(cs), std::move(d), std::move(v), std::move(c))))
|
||||
{
|
||||
auto new_id = state->subj_id;
|
||||
auto produce_time = state->worker.now();
|
||||
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());
|
||||
});
|
||||
|
||||
//
|
||||
// The scheduler is FIFO for any time T. Since the observer is scheduling
|
||||
// on_next/on_error/oncompleted the timed schedule calls must be resheduled
|
||||
// when they occur to ensure that production happens after on_next/on_error/oncompleted
|
||||
//
|
||||
|
||||
localState->worker.schedule(produce_time, [new_id, produce_time, localState](const rxsc::schedulable&){
|
||||
localState->worker.schedule(release_window(new_id, produce_time, localState));
|
||||
});
|
||||
}
|
||||
|
||||
static std::function<void(const rxsc::schedulable&)> release_window(int id, rxsc::scheduler::clock_type::time_point expected, state_type state) {
|
||||
auto release = [id, expected, state](const rxsc::schedulable&) {
|
||||
if (id != state->subj_id)
|
||||
return;
|
||||
|
||||
state->subj.get_subscriber().on_completed();
|
||||
state->subj = rxcpp::subjects::subject<T>();
|
||||
state->dest.on_next(state->subj.get_observable().as_dynamic());
|
||||
state->cursor = 0;
|
||||
auto new_id = ++state->subj_id;
|
||||
auto produce_time = expected + state->period;
|
||||
state->worker.schedule(produce_time, [new_id, produce_time, state](const rxsc::schedulable&){
|
||||
state->worker.schedule(release_window(new_id, produce_time, state));
|
||||
});
|
||||
};
|
||||
auto selectedRelease = on_exception(
|
||||
[&](){return state->coordinator.act(release);},
|
||||
state->dest);
|
||||
if (selectedRelease.empty()) {
|
||||
return std::function<void(const rxsc::schedulable&)>();
|
||||
}
|
||||
|
||||
return std::function<void(const rxsc::schedulable&)>(selectedRelease.get());
|
||||
}
|
||||
|
||||
void on_next(T v) const {
|
||||
auto localState = state;
|
||||
auto work = [v, localState](const rxsc::schedulable& self){
|
||||
localState->subj.get_subscriber().on_next(v);
|
||||
if (++localState->cursor == localState->count) {
|
||||
release_window(localState->subj_id, localState->worker.now(), localState)(self);
|
||||
}
|
||||
};
|
||||
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->subj.get_subscriber().on_error(e);
|
||||
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->subj.get_subscriber().on_completed();
|
||||
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, window_with_time_or_count_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(window_with_time_or_count_observer<Subscriber>::make(std::move(dest), initial)) {
|
||||
return window_with_time_or_count_observer<Subscriber>::make(std::move(dest), initial);
|
||||
}
|
||||
};
|
||||
|
||||
}
|
||||
|
||||
/*! @copydoc rx-window_time_count.hpp
|
||||
*/
|
||||
template<class... AN>
|
||||
auto window_with_time_or_count(AN&&... an)
|
||||
-> operator_factory<window_with_time_or_count_tag, AN...> {
|
||||
return operator_factory<window_with_time_or_count_tag, AN...>(std::make_tuple(std::forward<AN>(an)...));
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
template<>
|
||||
struct member_overload<window_with_time_or_count_tag>
|
||||
{
|
||||
template<class Observable, class Duration,
|
||||
class Enabled = rxu::enable_if_all_true_type_t<
|
||||
is_observable<Observable>,
|
||||
std::is_convertible<Duration, rxsc::scheduler::clock_type::duration>>,
|
||||
class SourceValue = rxu::value_type_t<Observable>,
|
||||
class WindowTimeCount = rxo::detail::window_with_time_or_count<SourceValue, rxu::decay_t<Duration>, identity_one_worker>,
|
||||
class Value = rxu::value_type_t<WindowTimeCount>>
|
||||
static auto member(Observable&& o, Duration&& period, int count)
|
||||
-> decltype(o.template lift<Value>(WindowTimeCount(std::forward<Duration>(period), count, identity_current_thread()))) {
|
||||
return o.template lift<Value>(WindowTimeCount(std::forward<Duration>(period), count, identity_current_thread()));
|
||||
}
|
||||
|
||||
template<class Observable, class Duration, class Coordination,
|
||||
class Enabled = rxu::enable_if_all_true_type_t<
|
||||
is_observable<Observable>,
|
||||
std::is_convertible<Duration, rxsc::scheduler::clock_type::duration>,
|
||||
is_coordination<Coordination>>,
|
||||
class SourceValue = rxu::value_type_t<Observable>,
|
||||
class WindowTimeCount = rxo::detail::window_with_time_or_count<SourceValue, rxu::decay_t<Duration>, rxu::decay_t<Coordination>>,
|
||||
class Value = rxu::value_type_t<WindowTimeCount>>
|
||||
static auto member(Observable&& o, Duration&& period, int count, Coordination&& cn)
|
||||
-> decltype(o.template lift<Value>(WindowTimeCount(std::forward<Duration>(period), count, std::forward<Coordination>(cn)))) {
|
||||
return o.template lift<Value>(WindowTimeCount(std::forward<Duration>(period), count, std::forward<Coordination>(cn)));
|
||||
}
|
||||
|
||||
template<class... AN>
|
||||
static operators::detail::window_with_time_or_count_invalid_t<AN...> member(AN...) {
|
||||
std::terminate();
|
||||
return {};
|
||||
static_assert(sizeof...(AN) == 10000, "window_with_time_or_count takes (Duration, Count, optional Coordination)");
|
||||
}
|
||||
};
|
||||
|
||||
}
|
||||
|
||||
#endif
|
||||
Reference in New Issue
Block a user