AtomicMarkableReference api詳解

今天學習AtomicMarkableReference類，該類是JUC原子包中的類，通過單元測試代碼把所有public api方法跑了一遍，大致瞭解了底層實現

package test.java.util.concurrent.atomic;


import java.util.concurrent.atomic.AtomicMarkableReference;
import org.junit.Test;

/**
 * AtomicMarkableReference的測試類
 *AtomicMarkableReference 用於標記一個對象的引用，通過靜態內部類Pair的方式記錄
 *
 * @author zqw
 * @date 2020-06-20 20:58:44
 */
public class AtomicMarkableReferenceTest {
        /**
        * 構造函數，參數一爲要標記的對象引用
         * 參數二爲標記布爾值
         * toString 返回ObjectclassName@hashCode()
         * void
         * @throws
         * @date 2020/6/20 21:40
         */
        @Test
        public void testConstruct0()throws Exception{
                AtomicMarkableReferenceTest test=new AtomicMarkableReferenceTest();
                AtomicMarkableReference testObj=new AtomicMarkableReference(test,true);
                System.out.println(testObj.toString());
        }
        /**
         * 獲取引用對象
         * @throws
         * @date 2020/6/20 21:40
         */
        @Test
        public void testGetReference(){
                AtomicMarkableReferenceTest test=new AtomicMarkableReferenceTest();
                AtomicMarkableReference testObj=new AtomicMarkableReference(test,true);
                System.out.println(testObj.getReference());
        }
        /**
         * 獲取引用對象標記值
         * @throws
         * @date 2020/6/20 21:40
         */
        @Test
        public void testIsMarked(){
                AtomicMarkableReferenceTest test=new AtomicMarkableReferenceTest();
                AtomicMarkableReference testObj=new AtomicMarkableReference(test,true);
                System.out.println(testObj.isMarked());
        }
        /**
         * 獲取引用對象標記值
         * @throws
         * @date 2020/6/20 21:40
         */
        @Test
        public void testGet(){
                AtomicMarkableReferenceTest test=new AtomicMarkableReferenceTest();
                AtomicMarkableReference testObj=new AtomicMarkableReference(test,false);
                boolean[] booleans=new boolean[]{true,false};
                System.out.println(testObj.get(booleans));
                System.out.println();

        }
        /**
         * CompareAndSet和WeakCompareAndSet相同
         * 將引用對象根據期望的值判斷，true則設置成新值和新標記值
         * false則不設置
         * @throws
         * @date 2020/6/20 21:40
         */
        @Test
        public void testWeakCompareAndSet(){
                AtomicMarkableReferenceTest test=new AtomicMarkableReferenceTest();
                AtomicMarkableReferenceTest test1=new AtomicMarkableReferenceTest();
                AtomicMarkableReference testObj=new AtomicMarkableReference(test,true);
                System.out.println(testObj.weakCompareAndSet(test,test1,true,false));
                System.out.println(testObj.getReference());
                System.out.println(testObj.isMarked());
        }
        /**
         * CompareAndSet和WeakCompareAndSet相同
         * 將引用對象根據期望的值判斷，true則設置成新值和新標記值
         * false則不設置
         * @throws
         * @date 2020/6/20 21:40
         */
        @Test
        public void testCompareAndSet(){
                AtomicMarkableReferenceTest test=new AtomicMarkableReferenceTest();
                AtomicMarkableReferenceTest test1=new AtomicMarkableReferenceTest();
                AtomicMarkableReference testObj=new AtomicMarkableReference(test,true);
                System.out.println(testObj.compareAndSet(test,test1,true,false));
                System.out.println(testObj.getReference());
                System.out.println(testObj.isMarked());
        }
        /**
         * 將引用對象設置成新值和新標記值
         * @throws
         * @date 2020/6/20 21:40
         */
        @Test
        public void testSet(){
                AtomicMarkableReferenceTest test=new AtomicMarkableReferenceTest();
                AtomicMarkableReferenceTest test1=new AtomicMarkableReferenceTest();
                AtomicMarkableReference testObj=new AtomicMarkableReference(test,true);
                testObj.set(test1,false);
                System.out.println(testObj.isMarked());
        }

        /**
         *改變引用對象標記值
         * @throws
         * @date 2020/6/20 21:40
         */
        @Test
        public void testAttemptMark(){
                AtomicMarkableReferenceTest test=new AtomicMarkableReferenceTest();
                AtomicMarkableReference testObj=new AtomicMarkableReference(test,true);
                testObj.attemptMark(test,false);
                System.out.println(testObj.isMarked());
        }



}