8282384: [LOOM] Need test for ThreadReference.interrupt() on a vthread

Reviewed-by: lmesnik, sspitsyn

test/hotspot/jtreg/vmTestbase/nsk/jdi/ThreadReference/interrupt/interrupt001.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2001, 2022, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2001, 2023, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -47,11 +47,9 @@
  * The test is passed if both 'interrupted status" are equal,           <BR>
  * otherwise the test failed.                                           <BR>
  *                                                                      <BR>
- * The test consists of two cases as follows:                           <BR>
+ * The test consists of one test case as follows:                       <BR>
  * - both debuggee's threads are locked up at synchronized block and    <BR>
  *   are not suspended;                                                 <BR>
- * - both debuggee's threads are locked up at synchronized block and    <BR>
- *   are suspended by java.lang.Thread.suspend() method;                <BR>
  */
 
 public class interrupt001 {
@@ -211,7 +209,9 @@ private void executeCase(int testCase, String threadName2) {
             throw new TestBug("ERROR: Not found ThreadReference for name :" + threadName2);
         }
 
-        log2("......interrupting the thread2");
+        log2("......thread2 is " + (thread2.isVirtual() ? "" : "not ") + "a virtual thread");
+
+        log2("......interrupting thread2");
         thread2.interrupt();
 
         log2("......instructing main thread to check up threads' interrupted statuses");

test/hotspot/jtreg/vmTestbase/nsk/jdi/ThreadReference/interrupt/interrupt001a.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2001, 2022, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2001, 2023, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -65,9 +65,9 @@ private static void logErr(String message) {
     // scaffold objects
     private static volatile ArgumentHandler argumentHandler = null;
 
-    private static interrupt001aThread thread2 = null;
+    private static Thread thread2 = null;
 
-    private static interrupt001aThread thread3 = null;
+    private static Thread thread3 = null;
 
     private static IOPipe pipe;
 
@@ -102,7 +102,7 @@ public static void main(String argv[]) {
 
             } else if (instruction.equals("newcheck")) {
 
-                synchronized (interrupt001aThread.lockingObject) {
+                synchronized (interrupt001aTask.lockingObject) {
                     thread2 = threadStart("Thread02");
                     thread3 = threadStart("Thread03");
 
@@ -142,14 +142,15 @@ public static void main(String argv[]) {
         System.exit(exitCode + PASS_BASE);
     }
 
-    private static interrupt001aThread threadStart(String threadName) {
-        interrupt001aThread resultThread = new interrupt001aThread(threadName);
-        synchronized (resultThread.waitnotifyObj) {
+    private static Thread threadStart(String threadName) {
+        interrupt001aTask resultRunnable = new interrupt001aTask(threadName);
+        Thread resultThread = JDIThreadFactory.newThread(resultRunnable, threadName);
+        synchronized (resultRunnable.waitnotifyObj) {
             resultThread.start();
             try {
                 log1("       before:   waitnotifyObj.wait();");
-                while (!resultThread.ready)
-                    resultThread.waitnotifyObj.wait();
+                while (!resultRunnable.ready)
+                    resultRunnable.waitnotifyObj.wait();
                 log1("       after:    waitnotifyObj.wait();");
             } catch (InterruptedException e) {
                 logErr("Unexpected InterruptedException while waiting for start of : " + threadName);
@@ -205,10 +206,10 @@ private static int checkInterruptStatus() {
     }
 }
 
-class interrupt001aThread extends Thread {
+class interrupt001aTask extends NamedTask {
 
-    public interrupt001aThread(String threadName) {
-        super(threadName);
+    public interrupt001aTask(String taskName) {
+        super(taskName);
     }
 
     public boolean ready;
@@ -235,6 +236,6 @@ public void run() {
     }
 
     void log(String str) {
-        interrupt001a.log2(Thread.currentThread().getName() + " : " + str);
+        interrupt001a.log2(getName() + " : " + str);
     }
 }