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
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
use std_::fmt;
use std_::ops::{Deref, DerefMut};
#[cfg(any(enable_duration, feature = "std"))]
use std_::time::Duration;
use integer_extensions::ToTime;
#[allow(unused_imports)]
use SelfOps;
#[cfg(feature="serde_")]
mod serde_duration_expanded_impls;
#[derive(Debug, Default, Copy, Clone, Eq, PartialEq, Ord, PartialOrd, Hash)]
pub struct MyDuration(pub Duration);
impl MyDuration {
pub fn from_hours(hours: u64) -> Self {
MyDuration(hours.hours())
}
pub fn from_minutes(minutes: u64) -> Self {
MyDuration(minutes.minutes())
}
pub fn from_seconds(seconds: u64) -> Self {
MyDuration(seconds.seconds())
}
pub fn from_mili(miliseconds: u64) -> Self {
MyDuration(miliseconds.miliseconds())
}
pub fn from_micro(microseconds: u64) -> Self {
MyDuration(microseconds.microseconds())
}
pub fn from_nano(nanoseconds: u64) -> Self {
MyDuration(nanoseconds.nanoseconds())
}
pub fn nanoseconds(self) -> u64 {
self.0.subsec_nanos() as u64 + self.0.as_secs() * 1_000_000_000
}
pub fn microseconds(self) -> u64 {
self.0.subsec_nanos() as u64 / 1000 + self.0.as_secs() * 1_000_000
}
pub fn miliseconds(self) -> u64 {
self.0.subsec_nanos() as u64 / 1_000_000 + self.0.as_secs() * 1_000
}
pub fn seconds(self) -> u64 {
self.0.as_secs()
}
pub fn minutes(self) -> u64 {
self.0.as_secs() / 60
}
pub fn hours(self) -> u64 {
self.0.as_secs() / 3600
}
pub fn map<F>(self, f: F) -> Self
where
F: FnOnce(Duration) -> Duration,
{
f(self.into()).into()
}
}
#[cfg(feature = "serde_")]
mod duration_serde{
use super::*;
use super::serde_duration_expanded_impls::SerdeDuration;
use serde::{Deserialize, Deserializer, Serialize, Serializer};
impl<'de> Deserialize<'de> for MyDuration {
fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
where
D: Deserializer<'de>,
{
SerdeDuration::deserialize(deserializer)?
.piped(|d|Duration::new(d.seconds,d.subsec_nanos))
.piped(MyDuration)
.piped(Ok)
}
}
impl Serialize for MyDuration {
fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where
S: Serializer,
{
SerdeDuration{
subsec_nanos:self.0.subsec_nanos(),
seconds:self.0.as_secs(),
}.serialize(serializer)
}
}
}
impl Deref for MyDuration {
type Target = Duration;
fn deref(&self) -> &Self::Target {
&self.0
}
}
impl DerefMut for MyDuration {
fn deref_mut(&mut self) -> &mut Self::Target {
&mut self.0
}
}
impl fmt::Display for MyDuration {
fn fmt(&self, f: &mut fmt::Formatter) -> Result<(), fmt::Error> {
fn split(dec: &mut u64, dur: &mut u64, factor: u64) -> bool {
let old_dur = *dur;
*dec = old_dur % factor;
*dur = old_dur / factor;
*dur < factor
}
let mut decimal = 0;
let mut dur = self.nanoseconds();
let unit = if dur < 1000 {
"ns"
} else if split(&mut decimal, &mut dur, 1000) {
"μs"
} else if split(&mut decimal, &mut dur, 1000) {
"ms"
} else {
split(&mut decimal, &mut dur, 1000);
"s"
};
let mut dec_digits = 3;
loop {
if decimal == 0 {
dec_digits = 0;
break;
} else if decimal % 10 == 0 {
decimal /= 10;
dec_digits -= 1;
} else {
break;
}
}
write!(f, "{}", dur)?;
if decimal != 0 {
write!(
f,
".{:0decimal_digits$}",
decimal,
decimal_digits = dec_digits
)?;
}
write!(f, "{}", unit)?;
Ok(())
}
}
impl From<Duration> for MyDuration {
fn from(from: Duration) -> Self {
MyDuration(from)
}
}
impl From<MyDuration> for Duration {
fn from(this: MyDuration) -> Duration {
this.0
}
}
#[inline(never)]
#[cfg(feature = "std")]
pub fn measure<F, T>(f: F) -> (MyDuration, T)
where
F: FnOnce() -> T,
{
let now = ::std_::time::Instant::now();
let ret = f();
let duration = now.elapsed();
let microseconds = MyDuration::from(duration);
(microseconds, ret)
}
#[inline(never)]
#[cfg(feature = "std")]
pub fn try_measure<F, T, E>(f: F) -> Result<(MyDuration, T), E>
where
F: FnOnce() -> Result<T, E>,
{
match measure(f) {
(_, Err(e)) => Err(e),
(t, Ok(v)) => Ok((t, v)),
}
}
#[cfg(test)]
mod tests {
use measure_time::MyDuration;
use alloc_::string::{String,ToString};
#[test]
fn test_precision() {
fn example(nanos: u64) -> String {
MyDuration::from_nano(nanos).to_string()
}
assert_eq!(example(100), "100ns");
assert_eq!(example(100), "100ns");
assert_eq!(example(100), "100ns");
assert_eq!(example(1000), "1μs");
assert_eq!(example(1001), "1.001μs");
assert_eq!(example(1010), "1.01μs");
assert_eq!(example(1200), "1.2μs");
assert_eq!(example(1230), "1.23μs");
assert_eq!(example(1234), "1.234μs");
assert_eq!(example(12340), "12.34μs");
assert_eq!(example(12345), "12.345μs");
assert_eq!(example(10), "10ns");
assert_eq!(example(10), "10ns");
assert_eq!(example(1_000_000_000), "1s");
assert_eq!(example(1_200_000_000), "1.2s");
assert_eq!(example(1_230_000_000), "1.23s");
assert_eq!(example(12_300_000_000), "12.3s");
assert_eq!(example(123_000_000_000), "123s");
assert_eq!(example(123_567_000_000), "123.567s");
}
}