fix issue in gqueue.Close

g/container/gqueue/gqueue.go

@@ -105,9 +105,18 @@ func (q *Queue) Pop() interface{} {
 // Notice: It would notify all goroutines return immediately,
 // which are being blocked reading using Pop method.
 func (q *Queue) Close() {
-    close(q.C)
-    close(q.events)
-    close(q.closed)
+    if q.C != nil {
+        close(q.C)
+        q.C = nil
+    }
+    if q.events != nil {
+        close(q.events)
+        q.events = nil
+    }
+    if q.closed != nil {
+        close(q.closed)
+        q.closed = nil
+    }
 }
 
 // Len returns the length of the queue.

geg/other/test.go

@@ -7,11 +7,11 @@ import (
 
 func main() {
 	max := 100
-	for i := 0; i < 10; i++ {
-		q := gqueue.New(max)
-		for i := 1; i < max; i++ {
-			q.Push(i)
-		}
-		gtest.Assert(q.Pop(), 1)
+	q := gqueue.New(max)
+	for i := 1; i < max; i++ {
+		q.Push(i)
 	}
+	q.Close()
+	gtest.Assert(q.Len(), 1)
+
 }