From 2728dcafeb5abae32e0c34293170a65e69b75e1f Mon Sep 17 00:00:00 2001
From: charlie <3140647@qq.com>
Date: Thu, 2 Jun 2022 15:39:51 +0800
Subject: [PATCH] spin locker

---
 locker/spin_locker.go | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)
 create mode 100644 locker/spin_locker.go

diff --git a/locker/spin_locker.go b/locker/spin_locker.go
new file mode 100644
index 0000000..8db0e44
--- /dev/null
+++ b/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)
+}