initial import

core/syncx/atomicbool.go

@@ -0,0 +1,38 @@
+package syncx
+
+import "sync/atomic"
+
+type AtomicBool uint32
+
+func NewAtomicBool() *AtomicBool {
+	return new(AtomicBool)
+}
+
+func ForAtomicBool(val bool) *AtomicBool {
+	b := NewAtomicBool()
+	b.Set(val)
+	return b
+}
+
+func (b *AtomicBool) CompareAndSwap(old, val bool) bool {
+	var ov, nv uint32
+	if old {
+		ov = 1
+	}
+	if val {
+		nv = 1
+	}
+	return atomic.CompareAndSwapUint32((*uint32)(b), ov, nv)
+}
+
+func (b *AtomicBool) Set(v bool) {
+	if v {
+		atomic.StoreUint32((*uint32)(b), 1)
+	} else {
+		atomic.StoreUint32((*uint32)(b), 0)
+	}
+}
+
+func (b *AtomicBool) True() bool {
+	return atomic.LoadUint32((*uint32)(b)) == 1
+}