undefect. CWE-407 — 63 sites patched across 27 ecosystems

Authors: russell@unturf.com · brackishbert@gmail.com · foxhop.net · TimeHexOn.com Patches, unit tests, benchmarks, whitepaper, and outreach briefs. Public domain — no copyright claimed. Use freely.
2026-03-26 17:11:57 -04:00 · 2026-03-26 17:11:57 -04:00 · 0a580b313d
commit 0a580b313d
70422 changed files with 17213626 additions and 0 deletions
--- a/test/jdk/java/lang/management/ThreadMXBean/LockedSynchronizers.java
+++ b/test/jdk/java/lang/management/ThreadMXBean/LockedSynchronizers.java
@ -0,0 +1,70 @@
+/*
+ * Copyright (c) 2005, 2015, 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
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * @test
+ * @bug     5086470 6358247
+ * @summary Basic Test for ThreadInfo.getLockedSynchronizers()
+ *          SynchronizerLockingThread is the class that creates threads
+ *          and do the checking.
+ *
+ * @author  Mandy Chung
+ *
+ * @build Barrier
+ * @build SynchronizerLockingThread
+ * @build ThreadDump
+ * @run main/othervm LockedSynchronizers
+ */
+
+import java.lang.management.*;
+import java.util.*;
+
+public class LockedSynchronizers {
+    public static void main(String[] argv) throws Exception {
+        ThreadMXBean mbean = ManagementFactory.getThreadMXBean();
+        if (!mbean.isSynchronizerUsageSupported()) {
+            System.out.println("Monitoring of synchronizer usage not supported");
+            return;
+        }
+
+        // Start thread and print thread dump
+        SynchronizerLockingThread.startLockingThreads();
+        ThreadDump.threadDump();
+
+        // Test dumpAllThreads with locked monitors and synchronizers
+        ThreadInfo[] tinfos = mbean.dumpAllThreads(true, true);
+        SynchronizerLockingThread.checkLocks(tinfos);
+
+        // Test getThreadInfo with locked monitors and synchronizers
+        long[] ids = SynchronizerLockingThread.getThreadIds();
+        tinfos = mbean.getThreadInfo(ids, true, true);
+        if (tinfos.length != ids.length) {
+            throw new RuntimeException("Number of ThreadInfo objects = " +
+                tinfos.length + " not matched. Expected: " + ids.length);
+        }
+
+        SynchronizerLockingThread.checkLocks(tinfos);
+
+        System.out.println("Test passed");
+    }
+}