Update DefaultPoolExecutor.java

在指令重排序下，单例双重校验不安全，用volatile可以禁止指令重排序
ifshyse · Oct 31, 2018 · bb75001 · bb75001
1 parent 8e3a4ca
commit bb75001
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/arouter-api/src/main/java/com/alibaba/android/arouter/thread/DefaultPoolExecutor.java b/arouter-api/src/main/java/com/alibaba/android/arouter/thread/DefaultPoolExecutor.java
@@ -28,7 +28,7 @@ public class DefaultPoolExecutor extends ThreadPoolExecutor {
     private static final int MAX_THREAD_COUNT = INIT_THREAD_COUNT;
     private static final long SURPLUS_THREAD_LIFE = 30L;
 
-    private static DefaultPoolExecutor instance;
+    private static volatile DefaultPoolExecutor instance;
 
     public static DefaultPoolExecutor getInstance() {
         if (null == instance) {