fix: 修复多处并发安全问题及锁实现重构

locker: 导出 RWLocker/EmptyLocker 接口, 新增 WithRWLocker, 重构
  SourceLocker 竞态、Synchronize 数据竞态

collections/linked_list: 补齐 ForEach/Size/GetAt/RemoveAt/ToList
  等方法的锁保护
collections/queue,stack: Peek/Size/IsEmpty 加锁
collections/list/linked_list: Front/Back/GetAt 加锁
maps: rwlock_map.Exist/Count, hash_map.Count 加锁
delay_queue/mem_store: Pop 原子化、Len/IsEmpty 加锁
cleanup_guard: Run() 检查 enable 标志
sets/ketama: 修复接口变更导致的 nil 空指针

locker/synchronizeable.go

@@ -24,9 +24,9 @@ func (w *Locker) WithDistributedLocker(d DistributedLocker) *Locker {
 }
 
 func (w *Locker) Synchronize() *Locker {
-	if w.mu == nil || w.mu == empty {
+	w.once.Do(func() {
 		w.mu = NewLocker()
-	}
+	})
 
 	return w
 }
@@ -59,49 +59,54 @@ type SpinLocker struct {
 }
 
 func (w *SpinLocker) Synchronize() {
-	if w.mu == nil || w.mu == empty {
+	w.once.Do(func() {
 		w.mu = NewSpinLocker()
-	}
+	})
 }
 
-type RWLocker struct {
+type WithRWLocker interface {
+	rwLocker
+	Synchronize() WithRWLocker
+}
+
+type RWLock struct {
 	once sync.Once
 	mu   rwLocker
 }
 
-func (w *RWLocker) Synchronize() *RWLocker {
-	if w.mu == nil || w.mu == empty {
+func (w *RWLock) Synchronize() WithRWLocker {
+	w.once.Do(func() {
 		w.mu = NewRWLocker()
-	}
+	})
 
 	return w
 }
 
-func (w *RWLocker) Lock() {
+func (w *RWLock) Lock() {
 	w.ensureLocker().mu.Lock()
 }
 
-func (w *RWLocker) TryLock() bool {
+func (w *RWLock) TryLock() bool {
 	return w.ensureLocker().mu.TryLock()
 }
 
-func (w *RWLocker) Unlock() {
+func (w *RWLock) Unlock() {
 	w.ensureLocker().mu.Unlock()
 }
 
-func (w *RWLocker) RLock() {
+func (w *RWLock) RLock() {
 	w.ensureLocker().mu.RLock()
 }
 
-func (w *RWLocker) TryRLock() bool {
+func (w *RWLock) TryRLock() bool {
 	return w.ensureLocker().mu.TryRLock()
 }
 
-func (w *RWLocker) RUnlock() {
+func (w *RWLock) RUnlock() {
 	w.ensureLocker().mu.RUnlock()
 }
 
-func (w *RWLocker) ensureLocker() *RWLocker {
+func (w *RWLock) ensureLocker() *RWLock {
 	w.once.Do(func() {
 		if w.mu == nil {
 			log.Println("初始化一个空锁")