spin locker

locker/spin_locker.go

@@ -0,0 +1,22 @@
+package locker
+
+import (
+	"runtime"
+	"sync/atomic"
+)
+
+type spinLock uint32
+
+func NewSpinLocker() *spinLock {
+	return new(spinLock)
+}
+
+func (sl *spinLock) Lock() {
+	for !atomic.CompareAndSwapUint32((*uint32)(sl), 0, 1) {
+		runtime.Gosched()
+	}
+}
+
+func (sl *spinLock) Unlock() {
+	atomic.StoreUint32((*uint32)(sl), 0)
+}