1 // @generated Code generated by gen-atomicwrapper.
2 3 // Copyright (c) 2020-2023 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 23 package atomic
24 25 import (
26 "encoding/json"
27 "time"
28 )
29 30 // Duration is an atomic type-safe wrapper for time.Duration values.
31 type Duration struct {
32 _ nocmp // disallow non-atomic comparison
33 34 v Int64
35 }
36 37 var _zeroDuration time.Duration
38 39 // NewDuration creates a new Duration.
40 func NewDuration(val time.Duration) *Duration {
41 x := &Duration{}
42 if val != _zeroDuration {
43 x.Store(val)
44 }
45 return x
46 }
47 48 // Load atomically loads the wrapped time.Duration.
49 func (x *Duration) Load() time.Duration {
50 return time.Duration(x.v.Load())
51 }
52 53 // Store atomically stores the passed time.Duration.
54 func (x *Duration) Store(val time.Duration) {
55 x.v.Store(int64(val))
56 }
57 58 // CAS is an atomic compare-and-swap for time.Duration values.
59 //
60 // Deprecated: Use CompareAndSwap.
61 func (x *Duration) CAS(old, new time.Duration) (swapped bool) {
62 return x.CompareAndSwap(old, new)
63 }
64 65 // CompareAndSwap is an atomic compare-and-swap for time.Duration values.
66 func (x *Duration) CompareAndSwap(old, new time.Duration) (swapped bool) {
67 return x.v.CompareAndSwap(int64(old), int64(new))
68 }
69 70 // Swap atomically stores the given time.Duration and returns the old
71 // value.
72 func (x *Duration) Swap(val time.Duration) (old time.Duration) {
73 return time.Duration(x.v.Swap(int64(val)))
74 }
75 76 // MarshalJSON encodes the wrapped time.Duration into JSON.
77 func (x *Duration) MarshalJSON() ([]byte, error) {
78 return json.Marshal(x.Load())
79 }
80 81 // UnmarshalJSON decodes a time.Duration from JSON.
82 func (x *Duration) UnmarshalJSON(b []byte) error {
83 var v time.Duration
84 if err := json.Unmarshal(b, &v); err != nil {
85 return err
86 }
87 x.Store(v)
88 return nil
89 }
90