From a7a720bc007b8c2fcf44b799a9b33e9d28ddf0d1 Mon Sep 17 00:00:00 2001
From: Jason Lu <wjlukuan@hotmail.com>
Date: Thu, 27 Feb 2025 17:09:25 +0800
Subject: [PATCH] update demo for ABA problem

---
 .../java/threaddemo/dataracing/CASByAtomicInteger.java     | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/main/java/threaddemo/dataracing/CASByAtomicInteger.java b/src/main/java/threaddemo/dataracing/CASByAtomicInteger.java
index 7dd4071..9085445 100644
--- a/src/main/java/threaddemo/dataracing/CASByAtomicInteger.java
+++ b/src/main/java/threaddemo/dataracing/CASByAtomicInteger.java
@@ -41,6 +41,11 @@ public class CASByAtomicInteger {
         Thread t1 = new Thread(() -> {
             int initValue = unSafeCounter.get();
             System.out.println(STR."Thread 1: Initial value = \{initValue}");
+            try {
+                Thread.sleep(10);
+            } catch (InterruptedException e) {
+                e.printStackTrace();
+            }
 
             unSafeCounter.compareAndSet(0,20);
             unSafeCounter.compareAndSet(20,0);
@@ -51,13 +56,13 @@ public class CASByAtomicInteger {
 
         Thread t2 = new Thread(() -> {
             int value = unSafeCounter.get();
+            System.out.println("Thread 2: Initial value = " + value);
             try {
                 // 等待线程1完成 ABA 操作
                 Thread.sleep(100);
             } catch (InterruptedException e) {
                 e.printStackTrace();
             }
-            System.out.println("Thread 2: Initial value = " + value);
 
             // 尝试 CAS 操作
             boolean success = unSafeCounter.compareAndSet(0, 30); // A -> C