go.mway.dev/chrono@v0.6.1-0.20240126030049-189c5aef20d2/clock/monotonic_clock.go (about)

     1  // Copyright (c) 2023 Matt Way
     2  //
     3  // Permission is hereby granted, free of charge, to any person obtaining a copy
     4  // of this software and associated documentation files (the "Software"), to
     5  // deal in the Software without restriction, including without limitation the
     6  // rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
     7  // sell copies of the Software, and to permit persons to whom the Software is
     8  // furnished to do so, subject to the following conditions:
     9  //
    10  // The above copyright notice and this permission notice shall be included in
    11  // all copies or substantial portions of the Software.
    12  //
    13  // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    14  // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
    15  // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
    16  // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
    17  // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
    18  // FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
    19  // IN THE THE SOFTWARE.
    20  
    21  package clock
    22  
    23  import (
    24  	"time"
    25  )
    26  
    27  var _ Clock = (*monotonicClock)(nil)
    28  
    29  type monotonicClock struct {
    30  	fn NanotimeFunc
    31  }
    32  
    33  func newMonotonicClock(fn NanotimeFunc) *monotonicClock {
    34  	return &monotonicClock{
    35  		fn: fn,
    36  	}
    37  }
    38  
    39  func (c *monotonicClock) After(d time.Duration) <-chan time.Time {
    40  	return time.After(d)
    41  }
    42  
    43  func (c *monotonicClock) AfterFunc(d time.Duration, fn func()) *Timer {
    44  	x := time.AfterFunc(d, fn)
    45  	return &Timer{
    46  		C:     x.C,
    47  		timer: x,
    48  	}
    49  }
    50  
    51  func (c *monotonicClock) Nanotime() int64 {
    52  	return c.fn()
    53  }
    54  
    55  func (c *monotonicClock) NewStopwatch() *Stopwatch {
    56  	return newStopwatch(c)
    57  }
    58  
    59  func (c *monotonicClock) NewTicker(d time.Duration) *Ticker {
    60  	x := time.NewTicker(d)
    61  	return &Ticker{
    62  		C:      x.C,
    63  		ticker: x,
    64  	}
    65  }
    66  
    67  func (c *monotonicClock) NewTimer(d time.Duration) *Timer {
    68  	timer := time.NewTimer(d)
    69  	return &Timer{
    70  		C:     timer.C,
    71  		timer: timer,
    72  	}
    73  }
    74  
    75  func (c *monotonicClock) Now() time.Time {
    76  	return time.Unix(0, c.fn())
    77  }
    78  
    79  func (c *monotonicClock) Since(t time.Time) time.Duration {
    80  	return c.SinceNanotime(t.UnixNano())
    81  }
    82  
    83  func (c *monotonicClock) SinceNanotime(ns int64) time.Duration {
    84  	return time.Duration(c.Nanotime() - ns)
    85  }
    86  
    87  func (c *monotonicClock) Sleep(d time.Duration) {
    88  	time.Sleep(d)
    89  }
    90  
    91  func (c *monotonicClock) Tick(d time.Duration) <-chan time.Time {
    92  	//nolint:staticcheck
    93  	return time.Tick(d)
    94  }