8376533: Remove test dependencies on ReferenceQueue$Lock in preparation for JDK-8376477

Reviewed-by: rriggs, shade, cjplummer

Author: Eirik Bjørsnøs

test/hotspot/jtreg/serviceability/sa/ClhsdbInspect.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017, 2025, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2017, 2026, 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
@@ -52,7 +52,7 @@ public static void main(String[] args) throws Exception {
             System.out.println("Started LingeredApp with pid " + theApp.getPid());
 
             // Run the 'jstack -v' command to get the address of a Method*,
-            // the oop address of a java.lang.ref.ReferenceQueue$Lock
+            // the oop address of a LingeredAppWithLock$NestedLock
             // and the oop address of a java.lang.Class object
             List<String> cmds = List.of("jstack -v");
 
@@ -63,8 +63,8 @@ public static void main(String[] args) throws Exception {
             tokensMap.put("(a java.lang.Class for LingeredAppWithLock)",
                           "instance of Oop for java/lang/Class");
             tokensMap.put("Method*=", "Type is Method");
-            tokensMap.put("(a java.lang.ref.ReferenceQueue$Lock)",
-                          "instance of Oop for java/lang/ref/ReferenceQueue\\$Lock");
+            tokensMap.put("(a LingeredAppWithLock$NestedLock)",
+                          "instance of Oop for LingeredAppWithLock\\$NestedLock");
 
             String[] lines = jstackOutput.split("\\R");
 

test/hotspot/jtreg/serviceability/sa/LingeredAppWithLock.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017, 2024, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2017, 2026, 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
@@ -27,6 +27,8 @@
 public class LingeredAppWithLock extends LingeredApp {
     private static Object lockObj = new Object();
 
+    private static class NestedLock {}
+
     public static void lockMethod(Object lock) {
         synchronized (lock) {
             try {
@@ -50,12 +52,14 @@ public static void waitMethod() {
     public static void main(String args[]) {
         Thread classLock1 = new Thread(() -> lockMethod(LingeredAppWithLock.class));
         Thread classLock2 = new Thread(() -> lockMethod(LingeredAppWithLock.class));
+        Thread nestedClassLock = new Thread(() -> lockMethod(new NestedLock()));
         Thread objectLock = new Thread(() -> lockMethod(classLock1));
         Thread primitiveLock = new Thread(() -> lockMethod(int.class));
         Thread objectWait = new Thread(() -> waitMethod());
 
         classLock1.start();
         classLock2.start();
+        nestedClassLock.start();
         objectLock.start();
         primitiveLock.start();
         objectWait.start();
@@ -65,6 +69,8 @@ public static void main(String args[]) {
                 classLock1.getState() != Thread.State.TIMED_WAITING) ||
                (classLock2.getState() != Thread.State.BLOCKED &&
                 classLock2.getState() != Thread.State.TIMED_WAITING) ||
+               (nestedClassLock.getState() != Thread.State.BLOCKED &&
+                nestedClassLock.getState() != Thread.State.TIMED_WAITING) ||
                (objectLock.getState() != Thread.State.TIMED_WAITING) ||
                (primitiveLock.getState() != Thread.State.TIMED_WAITING) ||
                (objectWait.getState() != Thread.State.TIMED_WAITING)) {

test/jdk/java/util/concurrent/ConcurrentHashMap/ConcurrentAssociateTest.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2013, 2016, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2013, 2026, 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
@@ -171,13 +171,9 @@ static void dumpTestThreads() {
             String lockName;
             if ("Signal Dispatcher".equals(name))
                 continue;
-            if ("Reference Handler".equals(name)
-                && (lockName = info.getLockName()) != null
-                && lockName.startsWith("java.lang.ref.Reference$Lock"))
+            if ("Reference Handler".equals(name))
                 continue;
-            if ("Finalizer".equals(name)
-                && (lockName = info.getLockName()) != null
-                && lockName.startsWith("java.lang.ref.ReferenceQueue$Lock"))
+            if ("Finalizer".equals(name))
                 continue;
             System.err.print(info);
         }

test/jdk/java/util/concurrent/Phaser/Basic.java

@@ -434,11 +434,9 @@ static void dumpTestThreads() {
             String name = info.getThreadName();
             if ("Signal Dispatcher".equals(name))
                 continue;
-            if ("Reference Handler".equals(name)
-                && info.getLockName().startsWith("java.lang.ref.Reference$Lock"))
+            if ("Reference Handler".equals(name))
                 continue;
-            if ("Finalizer".equals(name)
-                && info.getLockName().startsWith("java.lang.ref.ReferenceQueue$Lock"))
+            if ("Finalizer".equals(name))
                 continue;
             if (name.startsWith("process reaper"))
                 continue;

test/micro/org/openjdk/bench/jdk/internal/jrtfs/ImageReaderBenchmark.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2025, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2025, 2026, 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
@@ -447,7 +447,6 @@ private static void reportMissingClassesAndFail(ColdStart state, int errors) thr
             "/modules/java.base/jdk/internal/access/JavaLangRefAccess.class",
             "/modules/java.base/java/lang/ref/ReferenceQueue.class",
             "/modules/java.base/java/lang/ref/ReferenceQueue$Null.class",
-            "/modules/java.base/java/lang/ref/ReferenceQueue$Lock.class",
             "/modules/java.base/jdk/internal/access/JavaLangAccess.class",
             "/modules/java.base/jdk/internal/util/SystemProps.class",
             "/modules/java.base/jdk/internal/util/SystemProps$Raw.class",
@@ -1073,6 +1072,5 @@ private static void reportMissingClassesAndFail(ColdStart state, int errors) thr
             "/modules/java.base/java/nio/charset/CoderResult.class",
             "/modules/java.base/java/util/IdentityHashMap$IdentityHashMapIterator.class",
             "/modules/java.base/java/util/IdentityHashMap$KeyIterator.class",
-            "/modules/java.base/java/lang/Shutdown.class",
-            "/modules/java.base/java/lang/Shutdown$Lock.class");
+            "/modules/java.base/java/lang/Shutdown.class");
 }