concurrent test

whatsmars-common/src/test/java/org/hongxi/java/util/concurrent/LockSupportTest.java

@@ -8,10 +8,14 @@ import java.util.concurrent.locks.LockSupport;
 public class LockSupportTest {
 
     public static void main(String[] args) {
-        Object blocker = new Object();
         Thread t = new Thread(() -> {
             System.out.println(System.currentTimeMillis());
-            LockSupport.park(blocker);
+            /**
+             * 默认情况下调用线程是不持有许可证的，这里会阻塞。
+             * 因调用park()方法而被阻塞的线程被其他线程中断而返回时并不会抛出InterruptedException异常。
+             * 使用带有blocker参数的park方法，线程堆栈可以提供更多有关阻塞对象的信息。
+             */
+            LockSupport.park(new LockSupportTest());
             System.out.println(System.currentTimeMillis());
         });
         t.start();

whatsmars-common/src/test/java/org/hongxi/java/util/concurrent/LockSupportTest2.java

+package org.hongxi.java.util.concurrent;
+
+import java.util.concurrent.locks.LockSupport;
+
+/**
+ * @author shenhongxi 2019/09/01
+ */
+public class LockSupportTest2 {
+
+    public static void main(String[] args) {
+        System.out.println("begin park!");
+        LockSupport.unpark(Thread.currentThread());
+        LockSupport.park();
+        System.out.println("end park!");
+    }
+}