diff --git a/utils/sync2/bucket_pool.go b/utils/sync2/bucket_pool.go
index 2551a42..f5fa633 100644
--- a/utils/sync2/bucket_pool.go
+++ b/utils/sync2/bucket_pool.go
@@ -7,6 +7,7 @@ type BucketPool[T any] struct {
 	filled     []T
 	emptyCond  *sync.Cond
 	filledCond *sync.Cond
+	closed     bool
 }
 
 func NewBucketPool[T any]() *BucketPool[T] {
@@ -20,6 +21,11 @@ func (p *BucketPool[T]) GetEmpty() (T, bool) {
 	p.emptyCond.L.Lock()
 	defer p.emptyCond.L.Unlock()
 
+	if p.closed {
+		var t T
+		return t, false
+	}
+
 	if len(p.empty) == 0 {
 		p.emptyCond.Wait()
 	}
@@ -46,6 +52,11 @@ func (p *BucketPool[T]) GetFilled() (T, bool) {
 	p.filledCond.L.Lock()
 	defer p.filledCond.L.Unlock()
 
+	if p.closed {
+		var t T
+		return t, false
+	}
+
 	if len(p.filled) == 0 {
 		p.filledCond.Wait()
 	}
@@ -68,7 +79,17 @@ func (p *BucketPool[T]) PutFilled(t T) {
 	p.filledCond.Signal()
 }
 
-func (p *BucketPool[T]) WakeUpAll() {
+func (p *BucketPool[T]) Close() {
+	// 在两个锁中分别关闭，防止变量可见性问题
+
+	p.emptyCond.L.Lock()
+	p.closed = true
+	p.emptyCond.L.Unlock()
+
+	p.filledCond.L.Lock()
+	p.closed = true
+	p.filledCond.L.Unlock()
+
 	p.emptyCond.Broadcast()
 	p.filledCond.Broadcast()
 }