VolatileBarrierExample

DreamCats · DreamCats · commit 607a1efebe53 · 2020-02-13T13:08:46.000+08:00
diff --git a/Multithread/src/com/juc/volatiletest/VolatileBarrierExample.java b/Multithread/src/com/juc/volatiletest/VolatileBarrierExample.java
@@ -0,0 +1,22 @@
+/**
+ * @program JavaBooks
+ * @description: VolatileBarrierExample
+ * @author: mf
+ * @create: 2020/02/13 13:08
+ */
+
+package com.juc.volatiletest;
+
+public class VolatileBarrierExample {
+    int a;
+    volatile int v1 = 1;
+    volatile int v2 = 2;
+
+    void readAndWrite() {
+        int i = v1;           //第一个volatile读
+        int j = v2;           // 第二个volatile读
+        a = i + j;            //普通写
+        v1 = i + 1;          // 第一个volatile写
+        v2 = j * 2;          //第二个 volatile写
+    }
+}
