mirror of https://github.com/tevino/abool.git
63 lines
1.8 KiB
Markdown
63 lines
1.8 KiB
Markdown
# ABool :bulb:
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[](https://goreportcard.com/report/github.com/tevino/abool)
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[](https://godoc.org/github.com/tevino/abool)
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Atomic Boolean package for Go, optimized for performance yet simple to use.
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Designed for cleaner code.
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## Usage
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```go
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import "github.com/tevino/abool"
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cond := abool.New() // default to false
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cond.Set() // Sets to true
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cond.IsSet() // Returns true
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cond.UnSet() // Sets to false
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cond.IsNotSet() // Returns true
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cond.SetTo(any) // Sets to whatever you want
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cond.SetToIf(old, new) // Sets to `new` only if the Boolean matches the `old`, returns whether succeeded
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// embedding
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type Foo struct {
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cond *abool.AtomicBool // always use pointer to avoid copy
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}
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```
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## Benchmark:
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- Go 1.6.2
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- OS X 10.11.4
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- Intel CPU (to be specified)
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```
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# Read
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BenchmarkMutexRead-4 100000000 21.0 ns/op
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BenchmarkAtomicValueRead-4 200000000 6.30 ns/op
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BenchmarkAtomicBoolRead-4 300000000 4.21 ns/op # <--- This package
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# Write
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BenchmarkMutexWrite-4 100000000 21.6 ns/op
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BenchmarkAtomicValueWrite-4 30000000 43.4 ns/op
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BenchmarkAtomicBoolWrite-4 200000000 9.87 ns/op # <--- This package
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# CAS
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BenchmarkMutexCAS-4 30000000 44.9 ns/op
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BenchmarkAtomicBoolCAS-4 100000000 11.7 ns/op # <--- This package
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```
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## Special thanks to contributors
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- [barryz](https://github.com/barryz)
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- Added the `Toggle` method
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- [Lucas Rouckhout](https://github.com/LucasRouckhout)
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- Implemented JSON Unmarshal and Marshal interface
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- [Sebastian Schicho](https://github.com/schicho)
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- Reported a regression with test case
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