1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
|
// Copyright (c) Microsoft Open Technologies, Inc. All rights reserved. See License.txt in the project root for license information.
#pragma once
#if !defined(RXCPP_OPERATORS_RX_BUFFER_WITH_TIME_OR_COUNT_HPP)
#define RXCPP_OPERATORS_RX_BUFFER_WITH_TIME_OR_COUNT_HPP
#include "../rx-includes.hpp"
namespace rxcpp {
namespace operators {
namespace detail {
template<class T, class Duration, class Coordination>
struct buffer_with_time_or_count
{
static_assert(std::is_convertible<Duration, rxsc::scheduler::clock_type::duration>::value, "Duration parameter must convert to rxsc::scheduler::clock_type::duration");
static_assert(is_coordination<Coordination>::value, "Coordination parameter must satisfy the requirements for a Coordination");
typedef typename std::decay<T>::type source_value_type;
typedef typename std::decay<Coordination>::type coordination_type;
typedef typename coordination_type::coordinator_type coordinator_type;
typedef typename std::decay<Duration>::type duration_type;
struct buffer_with_time_or_count_values
{
buffer_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;
};
buffer_with_time_or_count_values initial;
buffer_with_time_or_count(duration_type period, int count, coordination_type coordination)
: initial(period, count, coordination)
{
}
template<class Subscriber>
struct buffer_with_time_or_count_observer
{
typedef buffer_with_time_or_count_observer<Subscriber> this_type;
typedef std::vector<T> value_type;
typedef typename std::decay<Subscriber>::type dest_type;
typedef observer<value_type, this_type> observer_type;
struct buffer_with_time_or_count_subscriber_values : public buffer_with_time_or_count_values
{
buffer_with_time_or_count_subscriber_values(dest_type d, buffer_with_time_or_count_values v, coordinator_type c)
: buffer_with_time_or_count_values(std::move(v))
, dest(std::move(d))
, coordinator(std::move(c))
, worker(std::move(coordinator.get_worker()))
, chunk_id(0)
{
}
dest_type dest;
coordinator_type coordinator;
rxsc::worker worker;
mutable int chunk_id;
mutable value_type chunk;
};
typedef std::shared_ptr<buffer_with_time_or_count_subscriber_values> state_type;
state_type state;
buffer_with_time_or_count_observer(dest_type d, buffer_with_time_or_count_values v, coordinator_type c)
: state(std::make_shared<buffer_with_time_or_count_subscriber_values>(buffer_with_time_or_count_subscriber_values(std::move(d), std::move(v), std::move(c))))
{
auto new_id = state->chunk_id;
auto produce_time = state->worker.now() + state->period;
auto localState = state;
state->worker.schedule(produce_time, [new_id, produce_time, localState](const rxsc::schedulable&){
produce_buffer(new_id, produce_time, localState);
});
}
static void produce_buffer(int id, rxsc::scheduler::clock_type::time_point expected, state_type state) {
if (id != state->chunk_id)
return;
state->dest.on_next(state->chunk);
state->chunk.resize(0);
auto new_id = ++state->chunk_id;
auto produce_time = expected + state->period;
auto localState = state;
state->worker.schedule(produce_time, [new_id, produce_time, localState](const rxsc::schedulable&){
produce_buffer(new_id, produce_time, localState);
});
}
void on_next(T v) const {
state->chunk.push_back(v);
if (int(state->chunk.size()) == state->count) {
produce_buffer(state->chunk_id, state->worker.now(), state);
}
}
void on_error(std::exception_ptr e) const {
state->dest.on_error(e);
}
void on_completed() const {
state->dest.on_next(state->chunk);
state->dest.on_completed();
}
static subscriber<T, observer<T, this_type>> make(dest_type d, buffer_with_time_or_count_values v) {
auto cs = d.get_subscription();
auto coordinator = v.coordination.create_coordinator(cs);
return make_subscriber<T>(std::move(cs), this_type(std::move(d), std::move(v), std::move(coordinator)));
}
};
template<class Subscriber>
auto operator()(Subscriber dest) const
-> decltype(buffer_with_time_or_count_observer<Subscriber>::make(std::move(dest), initial)) {
return buffer_with_time_or_count_observer<Subscriber>::make(std::move(dest), initial);
}
};
template<class Duration, class Coordination>
class buffer_with_time_or_count_factory
{
typedef typename std::decay<Duration>::type duration_type;
typedef typename std::decay<Coordination>::type coordination_type;
duration_type period;
duration_type skip;
coordination_type coordination;
public:
buffer_with_time_or_count_factory(duration_type p, duration_type s, coordination_type c) : period(p), skip(s), coordination(c) {}
template<class Observable>
auto operator()(Observable&& source)
-> decltype(source.template lift<std::vector<typename std::decay<Observable>::type::value_type>>(buffer_with_time_or_count<typename std::decay<Observable>::type::value_type, Duration, Coordination>(period, skip, coordination))) {
return source.template lift<std::vector<typename std::decay<Observable>::type::value_type>>(buffer_with_time_or_count<typename std::decay<Observable>::type::value_type, Duration, Coordination>(period, skip, coordination));
}
};
}
template<class Duration, class Coordination>
inline auto buffer_with_time_or_count(Duration period, int count, Coordination coordination)
-> detail::buffer_with_time_or_count_factory<Duration, Coordination> {
return detail::buffer_with_time_or_count_factory<Duration, Coordination>(period, count, coordination);
}
}
}
#endif
|
