blob: 027cfcb20bf526af09124c05a1d62ac80efe6bce [file] [log] [blame]
David K. Bainbridgee05cf0c2021-08-19 03:16:50 +00001// @generated Code generated by gen-atomicwrapper.
2
3// Copyright (c) 2020 Uber Technologies, Inc.
4//
5// Permission is hereby granted, free of charge, to any person obtaining a copy
6// of this software and associated documentation files (the "Software"), to deal
7// in the Software without restriction, including without limitation the rights
8// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
9// copies of the Software, and to permit persons to whom the Software is
10// furnished to do so, subject to the following conditions:
11//
12// The above copyright notice and this permission notice shall be included in
13// all copies or substantial portions of the Software.
14//
15// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
18// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
21// THE SOFTWARE.
22
23package atomic
24
25import (
26 "encoding/json"
27 "time"
28)
29
30// Duration is an atomic type-safe wrapper for time.Duration values.
31type Duration struct {
32 _ nocmp // disallow non-atomic comparison
33
34 v Int64
35}
36
37var _zeroDuration time.Duration
38
39// NewDuration creates a new Duration.
40func NewDuration(v time.Duration) *Duration {
41 x := &Duration{}
42 if v != _zeroDuration {
43 x.Store(v)
44 }
45 return x
46}
47
48// Load atomically loads the wrapped time.Duration.
49func (x *Duration) Load() time.Duration {
50 return time.Duration(x.v.Load())
51}
52
53// Store atomically stores the passed time.Duration.
54func (x *Duration) Store(v time.Duration) {
55 x.v.Store(int64(v))
56}
57
58// CAS is an atomic compare-and-swap for time.Duration values.
59func (x *Duration) CAS(o, n time.Duration) bool {
60 return x.v.CAS(int64(o), int64(n))
61}
62
63// Swap atomically stores the given time.Duration and returns the old
64// value.
65func (x *Duration) Swap(o time.Duration) time.Duration {
66 return time.Duration(x.v.Swap(int64(o)))
67}
68
69// MarshalJSON encodes the wrapped time.Duration into JSON.
70func (x *Duration) MarshalJSON() ([]byte, error) {
71 return json.Marshal(x.Load())
72}
73
74// UnmarshalJSON decodes a time.Duration from JSON.
75func (x *Duration) UnmarshalJSON(b []byte) error {
76 var v time.Duration
77 if err := json.Unmarshal(b, &v); err != nil {
78 return err
79 }
80 x.Store(v)
81 return nil
82}