forked from mirror/abool
65 lines
1.8 KiB
Markdown
65 lines
1.8 KiB
Markdown
# ABool :bulb:
|
|
|
|
[](https://goreportcard.com/report/github.com/tevino/abool)
|
|
[](https://godoc.org/github.com/tevino/abool)
|
|
|
|
Atomic Boolean package for Go, optimized for performance yet simple to use.
|
|
|
|
Designed for cleaner code.
|
|
|
|
## Usage
|
|
|
|
```go
|
|
import "github.com/tevino/abool"
|
|
|
|
cond := abool.New() // default to false
|
|
|
|
cond.Set() // Sets to true
|
|
cond.IsSet() // Returns true
|
|
cond.UnSet() // Sets to false
|
|
cond.IsNotSet() // Returns true
|
|
cond.SetTo(any) // Sets to whatever you want
|
|
cond.SetToIf(new, old) // Sets to `new` only if the Boolean matches the `old`, returns whether succeeded
|
|
cond.Toggle() // Inverts the boolean then returns the value before inverting
|
|
|
|
|
|
// embedding
|
|
type Foo struct {
|
|
cond *abool.AtomicBool // always use pointer to avoid copy
|
|
}
|
|
```
|
|
|
|
## Benchmark
|
|
|
|
- Go 1.14.3
|
|
- Linux 4.19.0
|
|
|
|
```bash
|
|
goos: linux
|
|
goarch: amd64
|
|
|
|
# Read
|
|
BenchmarkMutexRead-4 86662128 14.2 ns/op
|
|
BenchmarkAtomicValueRead-4 1000000000 0.755 ns/op
|
|
BenchmarkAtomicBoolRead-4 1000000000 0.720 ns/op # <--- This package
|
|
|
|
|
|
# Write
|
|
BenchmarkMutexWrite-4 76237544 13.6 ns/op
|
|
BenchmarkAtomicValueWrite-4 79471124 14.9 ns/op
|
|
BenchmarkAtomicBoolWrite-4 178218270 6.73 ns/op # <--- This package
|
|
|
|
# CAS
|
|
BenchmarkMutexCAS-4 29416574 34.7 ns/op
|
|
BenchmarkAtomicBoolCAS-4 171900002 7.14 ns/op # <--- This package
|
|
|
|
# Toggle
|
|
BenchmarkMutexToggle-4 35212117 34.5 ns/op
|
|
BenchmarkAtomicBoolToggle-4 169871972 7.02 ns/op # <--- This package
|
|
```
|
|
|
|
## Special thanks to contributors
|
|
|
|
- [@barryz](https://github.com/barryz)
|
|
- Added the `Toggle` method
|