asim 0.1.0

Discrete Event Simluation for Async Rust
Documentation 
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
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214

use serde::{Deserialize, Serialize};

/// The time at which the simulation started
pub const START_TIME: Time = Time(0);

/// Elapsed time in nanoseconds
#[derive(Serialize, Deserialize, Debug, Clone, Copy, PartialEq, PartialOrd, Ord, Eq)]
pub struct Time(u64);

#[derive(Debug, Default, Clone, Copy, PartialEq, PartialOrd, Ord, Eq)]
pub struct Duration(u64);

impl Time {
    pub const fn from_micros(micros: u64) -> Self {
        Self(micros)
    }

    pub const fn from_millis(millis: u64) -> Self {
        Self::from_micros(millis * 1000)
    }

    pub const fn from_seconds(seconds: u64) -> Self {
        Self::from_millis((seconds as u64) * 1000)
    }

    pub const fn from_minutes(minutes: u64) -> Self {
        Self::from_seconds(minutes * 60)
    }

    pub const fn from_hours(hours: u64) -> Self {
        Self::from_minutes(60 * hours)
    }

    /// Get elapsed hours (rounded down)
    pub fn to_hours(&self) -> u64 {
        self.to_seconds() / (60 * 60)
    }

    /// Get elapsed minutes (rounded down)
    pub fn to_minutes(self) -> u64 {
        self.to_seconds() / 60
    }

    /// Get elapsed seconds (rounded down)
    pub fn to_seconds(&self) -> u64 {
        (self.0 / (1_000_000)) as u64
    }

    pub fn to_millis(&self) -> u64 {
        (self.0 / 1_000) as u64
    }

    pub fn as_micros(&self) -> u64 {
        self.0
    }

    pub fn as_millis_f64(&self) -> f64 {
        (self.0 as f64) / 1_000.0
    }

    pub fn as_seconds_f64(&self) -> f64 {
        (self.0 as f64) / (1_000_000.0)
    }
}

impl Duration {
    pub const fn from_micros(micros: u64) -> Self {
        Self(micros)
    }

    pub const fn from_millis(millis: u64) -> Self {
        Self::from_micros(millis * 1000)
    }

    pub const fn from_seconds(seconds: u64) -> Self {
        Self::from_millis((seconds as u64) * 1000)
    }

    pub const fn from_minutes(minutes: u64) -> Self {
        Self::from_seconds(minutes * 60)
    }

    pub const fn from_hours(hours: u64) -> Self {
        Self::from_minutes(60 * hours)
    }

    pub fn is_zero(&self) -> bool {
        self.0 == 0
    }

    /// Get duration in hours (rounded down)
    pub fn to_hours(self) -> u64 {
        self.to_seconds() / (60 * 60)
    }

    /// Get duration in minutes (rounded down)
    pub fn to_minutes(self) -> u64 {
        self.to_seconds() / 60
    }

    /// Get duration in seconds (rounded down)
    pub fn to_seconds(self) -> u64 {
        (self.0 / (1_000_000)) as u64
    }

    pub fn to_millis(self) -> u64 {
        (self.0 / 1_000) as u64
    }

    pub fn as_micros(&self) -> u64 {
        self.0
    }

    pub fn as_millis_f64(&self) -> f64 {
        (self.0 as f64) / 1_000.0
    }

    pub fn as_seconds_f64(&self) -> f64 {
        (self.0 as f64) / (1_000_000.0)
    }
}

impl std::ops::Add<Duration> for Time {
    type Output = Self;

    fn add(self, other: Duration) -> Self {
        Self(self.0 + other.0)
    }
}

impl std::ops::AddAssign<Duration> for Duration {
    fn add_assign(&mut self, other: Duration) {
        self.0 += other.0
    }
}

impl std::ops::Add for Duration {
    type Output = Self;

    fn add(self, other: Self) -> Self {
        Self(self.0 + other.0)
    }
}

impl std::ops::Sub for Duration {
    type Output = Self;

    fn sub(self, other: Self) -> Self {
        Self(self.0 - other.0)
    }
}

impl std::ops::Sub<Self> for Time {
    type Output = Duration;

    fn sub(self, other: Self) -> Duration {
        Duration(self.0 - other.0)
    }
}

impl std::ops::Sub<Duration> for Time {
    type Output = Self;

    fn sub(self, other: Duration) -> Self {
        Self(self.0 - other.0)
    }
}

impl std::fmt::Display for Duration {
    fn fmt(&self, w: &mut std::fmt::Formatter) -> Result<(), std::fmt::Error> {
        write!(w, "{}μs", self.0)
    }
}

impl std::fmt::Display for Time {
    fn fmt(&self, w: &mut std::fmt::Formatter) -> Result<(), std::fmt::Error> {
        let hrs = self.to_hours();
        let minutes = self.to_minutes() - hrs * 60;
        let secs = self.to_seconds() - minutes * 60 - hrs * 60 * 60;
        let millis = self.as_millis_f64() % 1000.0;

        if hrs > 0 {
            write!(w, "{hrs:02}h ")?;
        }
        if minutes > 0 {
            write!(w, "{minutes:02}min ")?;
        }

        write!(w, "{secs:02}s {millis:.3}ms")
    }
}

#[cfg(test)]
mod tests {
    use super::{Duration, Time};

    #[test]
    fn duration_from_seconds() {
        let duration = Duration::from_seconds(2);

        assert_eq!(2, duration.to_seconds());
        assert_eq!(2_000, duration.to_millis());
        assert_eq!(2_000_000, duration.as_micros());
    }

    #[test]
    fn time_from_seconds() {
        let time = Time::from_seconds(2);

        assert_eq!(2, time.to_seconds());
        assert_eq!(2_000, time.to_millis());
        assert_eq!(2_000_000, time.as_micros());
    }
}