-
Notifications
You must be signed in to change notification settings - Fork 451
/
atomic.go
50 lines (43 loc) · 1.7 KB
/
atomic.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
// Copyright (c) 2018 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package postings
import (
"go.uber.org/atomic"
)
// AtomicID is an atomic ID.
type AtomicID struct {
internal *atomic.Uint32
}
// NewAtomicID creates a new AtomicID.
func NewAtomicID(id ID) AtomicID {
return AtomicID{internal: atomic.NewUint32(uint32(id))}
}
// Load atomically loads the ID.
func (id AtomicID) Load() ID {
return ID(id.internal.Load())
}
// Inc atomically increments the ID and returns the new value.
func (id AtomicID) Inc() ID {
return ID(id.internal.Inc())
}
// Add atomically adds n to the ID and returns the new ID.
func (id AtomicID) Add(n uint32) ID {
return ID(id.internal.Add(n))
}