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
|
#ifndef TMWA_NET_TIMER_T_HPP
#define TMWA_NET_TIMER_T_HPP
// timer.t.hpp - Future event scheduler.
//
// Copyright © ????-2004 Athena Dev Teams
// Copyright © 2004-2011 The Mana World Development Team
// Copyright © 2011-2014 Ben Longbons <b.r.longbons@gmail.com>
//
// This file is part of The Mana World (Athena server)
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
# include "fwd.hpp"
# include <cstdlib>
# include <chrono>
# include <functional>
# include "../ints/little.hpp"
# include "../generic/dumb_ptr.hpp"
namespace tmwa
{
/// An implementation of the C++ "clock" concept, exposing
/// durations in milliseconds.
class milli_clock
{
public:
typedef std::chrono::milliseconds duration;
typedef duration::rep rep;
typedef duration::period period;
typedef std::chrono::time_point<milli_clock, duration> time_point;
static const bool is_steady = true; // assumed - not necessarily true
static time_point now() noexcept;
};
/// A point in time.
typedef milli_clock::time_point tick_t;
/// The difference between two points in time.
typedef milli_clock::duration interval_t;
/// (to get additional arguments, use std::bind or a lambda).
typedef std::function<void (TimerData *, tick_t)> timer_func;
// 49.7 day problem
inline __attribute__((warn_unused_result))
bool native_to_network(Little32 *net, tick_t nat)
{
auto tmp = nat.time_since_epoch().count();
return native_to_network(net, static_cast<uint32_t>(tmp));
}
inline __attribute__((warn_unused_result))
bool network_to_native(tick_t *nat, Little32 net)
{
(void)nat;
(void)net;
abort();
}
inline __attribute__((warn_unused_result))
bool native_to_network(Little32 *net, interval_t nat)
{
auto tmp = nat.count();
return native_to_network(net, static_cast<uint32_t>(tmp));
}
inline __attribute__((warn_unused_result))
bool network_to_native(interval_t *nat, Little32 net)
{
uint32_t tmp;
bool rv = network_to_native(&tmp, net);
*nat = interval_t(tmp);
return rv;
}
inline __attribute__((warn_unused_result))
bool native_to_network(Little16 *net, interval_t nat)
{
auto tmp = nat.count();
return native_to_network(net, static_cast<uint16_t>(tmp));
}
inline __attribute__((warn_unused_result))
bool network_to_native(interval_t *nat, Little16 net)
{
uint16_t tmp;
bool rv = network_to_native(&tmp, net);
*nat = interval_t(tmp);
return rv;
}
class Timer
{
friend struct TimerData;
dumb_ptr<TimerData> td;
Timer(const Timer&) = delete;
Timer& operator = (const Timer&) = delete;
public:
/// Don't own anything yet.
Timer() = default;
/// Schedule a timer for the given tick.
/// If you do not wish to keep track of it, call disconnect().
/// Otherwise, you may cancel() or replace (operator =) it later.
///
/// If the interval argument is given, the timer will reschedule
/// itself again forever. Otherwise, it will disconnect() itself
/// just BEFORE it is called.
Timer(tick_t tick, timer_func func, interval_t interval=interval_t::zero());
Timer(Timer&& t);
Timer& operator = (Timer&& t);
~Timer() { cancel(); }
/// Cancel the delivery of this timer's function, and make it falsy.
/// Implementation note: this doesn't actually remove it, just sets
/// the functor to do_nothing, and waits for the tick before removing.
void cancel();
/// Make it falsy without cancelling the timer,
void detach();
/// Check if there is a timer connected.
explicit operator bool() { return bool(td); }
/// Check if there is no connected timer.
bool operator !() { return !td; }
};
} // namespace tmwa
#endif // TMWA_NET_TIMER_T_HPP
|
