Remove go1.18 support and update the implementation of the CBool (#23)

.github/workflows/go.yml

@@ -11,7 +11,7 @@ jobs:
   build:
     strategy:
       matrix:
-        go: [ '1.18','1.19','1.20','1.21' ]
+        go: [ '1.19','1.20','1.21' ]
         os: [ 'ubuntu-latest', 'windows-latest', 'macos-latest' ]
     runs-on: ${{ matrix.os }}
     steps:

go.mod

@@ -1,3 +1,3 @@
 module github.com/no-src/log
 
-go 1.18
+go 1.19

internal/cbool/cbool.go

@@ -1,39 +1,34 @@
 package cbool
 
-import "sync"
+import (
+	"sync/atomic"
+)
 
 // CBool a concurrent safe bool
 type CBool struct {
-	v  bool
-	mu sync.RWMutex
+	v atomic.Bool
 }
 
 // New create an instance of CBool
 func New(v bool) *CBool {
-	return &CBool{
-		v: v,
-	}
+	cb := &CBool{}
+	cb.v.Store(v)
+	return cb
 }
 
 // Get return the bool value
 func (cb *CBool) Get() bool {
-	cb.mu.RLock()
-	defer cb.mu.RUnlock()
-	return cb.v
+	return cb.v.Load()
 }
 
 // Set to set the bool value
 func (cb *CBool) Set(v bool) {
-	cb.mu.Lock()
-	defer cb.mu.Unlock()
-	cb.v = v
+	cb.v.Store(v)
 }
 
 // SetC to set the bool value and return a closed channel
 func (cb *CBool) SetC(v bool) <-chan struct{} {
-	cb.mu.Lock()
-	defer cb.mu.Unlock()
-	cb.v = v
+	cb.Set(v)
 	c := make(chan struct{})
 	close(c)
 	return c

internal/cbool/cbool_test.go

@@ -1,6 +1,9 @@
 package cbool
 
-import "testing"
+import (
+	"sync"
+	"testing"
+)
 
 func TestCBool(t *testing.T) {
 	expect := true
@@ -28,3 +31,37 @@ func TestCBool(t *testing.T) {
 		t.Errorf("test CBoll SetC value failed, channel should be closed")
 	}
 }
+
+func TestCBool_Concurrent(t *testing.T) {
+	cb := New(false)
+	wg := sync.WaitGroup{}
+	count := 10
+	wg.Add(count * 3)
+	for i := 0; i < count; i++ {
+		go func() {
+			cb.Get()
+			wg.Done()
+		}()
+
+		go func() {
+			cb.Set(true)
+			wg.Done()
+		}()
+
+		go func() {
+			<-cb.SetC(true)
+			wg.Done()
+		}()
+	}
+	wg.Wait()
+}
+
+func BenchmarkCBool(b *testing.B) {
+	b.ReportAllocs()
+	b.ResetTimer()
+	cb := New(false)
+	for i := 0; i < b.N; i++ {
+		cb.Set(true)
+		cb.Get()
+	}
+}