Atomic Boolean package for Go, optimized for performance yet simple to use.
Designed for cleaner code.
import "github.com/tevino/abool/v2"
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(old, new) // Sets to `new` only if the Boolean matches the `old`, returns whether succeeded
cond.Toggle() // Flip the value of `cond`, returns the value before flipping
// embedding
type Foo struct {
cond *abool.AtomicBool // always use pointer to avoid copy
}go: v1.18.2
goos: darwin
goarch: amd64
cpu: Intel(R) Core(TM) i9-8950HK CPU @ 2.90GHz
# Read
BenchmarkMutexRead-12 100000000 10.24 ns/op
BenchmarkAtomicValueRead-12 1000000000 0.4690 ns/op
BenchmarkAtomicBoolRead-12 1000000000 0.2345 ns/op # <--- This package
# Write
BenchmarkMutexWrite-12 100000000 10.19 ns/op
BenchmarkAtomicValueWrite-12 164918696 7.235 ns/op
BenchmarkAtomicBoolWrite-12 278729533 4.341 ns/op # <--- This package
# CAS
BenchmarkMutexCAS-12 57333123 20.26 ns/op
BenchmarkAtomicBoolCAS-12 203575494 5.755 ns/op # <--- This package
# Toggle
BenchmarkAtomicBoolToggle-12 145249862 8.196 ns/op # <--- This package
- barryz
- Added the
Togglemethod
- Added the
- Lucas Rouckhout
- Implemented JSON Unmarshal and Marshal interface
- Sebastian Schicho
- Reported a regression with test case
- Hide the underlying
int - Reintroduced the
Togglemethod