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// Copyright (c) 2019-2021 Alexander Medvednikov. All rights reserved.
// Use of this source code is governed by an MIT license
// that can be found in the LICENSE file.
module time
pub struct StopWatchOptions {
auto_start bool = true
}
// StopWatch is used to measure elapsed time.
pub struct StopWatch {
mut:
elapsed u64
pub mut:
start u64
end u64
}
// new_stopwatch initializes a new StopWatch with the current time as start.
pub fn new_stopwatch(opts StopWatchOptions) StopWatch {
mut initial := u64(0)
if opts.auto_start {
initial = sys_mono_now()
}
return StopWatch{
elapsed: 0
start: initial
end: 0
}
}
// start starts the stopwatch. If the timer was paused, restarts counting.
pub fn (mut t StopWatch) start() {
t.start = sys_mono_now()
t.end = 0
}
// restart restarts the stopwatch. If the timer was paused, restarts counting.
pub fn (mut t StopWatch) restart() {
t.start = sys_mono_now()
t.end = 0
t.elapsed = 0
}
// stop stops the timer, by setting the end time to the current time.
pub fn (mut t StopWatch) stop() {
t.end = sys_mono_now()
}
// pause resets the `start` time and adds the current elapsed time to `elapsed`.
pub fn (mut t StopWatch) pause() {
if t.start > 0 {
if t.end == 0 {
t.elapsed += sys_mono_now() - t.start
} else {
t.elapsed += t.end - t.start
}
}
t.start = 0
}
// elapsed returns the Duration since the last start call
pub fn (t StopWatch) elapsed() Duration {
if t.start > 0 {
if t.end == 0 {
return Duration(i64(sys_mono_now() - t.start + t.elapsed))
} else {
return Duration(i64(t.end - t.start + t.elapsed))
}
}
return Duration(i64(t.elapsed))
}
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