forked from mirror/abool
60 lines
1.9 KiB
Markdown
60 lines
1.9 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 library for Go, optimized for performance yet simple to use.
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Use this 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() // Set to true
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cond.IsSet() // Returns true
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cond.UnSet() // Set to false
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cond.SetTo(true) // Set to whatever you want
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cond.SetToIf(false, true) // Set to true if it is false, returns false(not set)
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cond.Toggle() *AtomicBool // Negates boolean atomically and returns a new AtomicBool object which holds previous boolean value.
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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 1.11.5
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- OS X 10.14.5
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```shell
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# Read
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BenchmarkMutexRead-4 100000000 14.7 ns/op
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BenchmarkAtomicValueRead-4 2000000000 0.45 ns/op
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BenchmarkAtomicBoolRead-4 2000000000 0.35 ns/op # <--- This package
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# Write
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BenchmarkMutexWrite-4 100000000 14.5 ns/op
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BenchmarkAtomicValueWrite-4 100000000 10.5 ns/op
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BenchmarkAtomicBoolWrite-4 300000000 5.21 ns/op # <--- This package
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# CAS
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BenchmarkMutexCAS-4 50000000 31.3 ns/op
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BenchmarkAtomicBoolCAS-4 200000000 7.18 ns/op # <--- This package
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# Toggle
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BenchmarkMutexToggle-4 50000000 32.6 ns/op
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BenchmarkAtomicBoolToggle-4 300000000 5.21 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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