ABool :bulb:

Atomic Boolean package for Go, optimized for performance yet simple to use.

Designed for cleaner code.

Usage

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
// embedding
type Foo struct {
    cond *abool.AtomicBool  // always use pointer to avoid copy
}

Benchmark:

• Go 1.6.2
• OS X 10.11.4
• Intel CPU (to be specified)

# Read
BenchmarkMutexRead-4        100000000           21.0 ns/op
BenchmarkAtomicValueRead-4  200000000            6.30 ns/op
BenchmarkAtomicBoolRead-4   300000000            4.21 ns/op  # 
Special thanks to contributors

• barryz
  • Added the

    Toggle

    method
• Lucas Rouckhout
  • Implemented JSON Unmarshal and Marshal interface
• Sebastian Schicho
  • Reported a regression with test case