af220de512
As in #73, separate each atomic type into its own file to ease review of transition to generated code. After moving every atomic to its own file, the atomic.go file serves only as documentation, so rename it to doc.go.
90 lines
2.8 KiB
Go
90 lines
2.8 KiB
Go
// Copyright (c) 2020 Uber Technologies, Inc.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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package atomic
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import (
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"encoding/json"
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"time"
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)
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// Duration is an atomic wrapper around time.Duration
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// https://godoc.org/time#Duration
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type Duration struct {
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nocmp // disallow non-atomic comparison
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v Int64
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}
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// NewDuration creates a Duration.
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func NewDuration(d time.Duration) *Duration {
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return &Duration{v: *NewInt64(int64(d))}
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}
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// Load atomically loads the wrapped value.
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func (d *Duration) Load() time.Duration {
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return time.Duration(d.v.Load())
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}
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// Store atomically stores the passed value.
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func (d *Duration) Store(n time.Duration) {
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d.v.Store(int64(n))
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}
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// Add atomically adds to the wrapped time.Duration and returns the new value.
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func (d *Duration) Add(n time.Duration) time.Duration {
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return time.Duration(d.v.Add(int64(n)))
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}
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// Sub atomically subtracts from the wrapped time.Duration and returns the new value.
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func (d *Duration) Sub(n time.Duration) time.Duration {
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return time.Duration(d.v.Sub(int64(n)))
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}
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// Swap atomically swaps the wrapped time.Duration and returns the old value.
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func (d *Duration) Swap(n time.Duration) time.Duration {
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return time.Duration(d.v.Swap(int64(n)))
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}
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// CAS is an atomic compare-and-swap.
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func (d *Duration) CAS(old, new time.Duration) bool {
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return d.v.CAS(int64(old), int64(new))
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}
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// MarshalJSON encodes the wrapped time.Duration into JSON.
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func (d *Duration) MarshalJSON() ([]byte, error) {
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return json.Marshal(d.Load())
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}
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// UnmarshalJSON decodes JSON into the wrapped time.Duration.
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func (d *Duration) UnmarshalJSON(b []byte) error {
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var v time.Duration
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if err := json.Unmarshal(b, &v); err != nil {
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return err
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}
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d.Store(v)
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return nil
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}
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// String encodes the wrapped value as a string.
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func (d *Duration) String() string {
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return d.Load().String()
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}
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