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/hotspot/jtreg/gc/TestMemoryMXBeansAndPoolsPresence.java
+++ b/test/hotspot/jtreg/gc/TestMemoryMXBeansAndPoolsPresence.java
@ -0,0 +1,116 @@
+/*
+ * Copyright (c) 2017, 2019, 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.
+ */
+
+package gc;
+
+import java.util.List;
+import java.lang.management.*;
+import static jdk.test.lib.Asserts.*;
+import java.util.stream.*;
+
+/* @test TestMemoryMXBeansAndPoolsPresenceG1
+ * @bug 8191564
+ * @summary Tests that GarbageCollectorMXBeans and GC MemoryPools are created.
+ * @library /test/lib
+ * @modules java.base/jdk.internal.misc
+ *          java.management
+ * @requires vm.gc.G1
+ * @run main/othervm -XX:+UseG1GC gc.TestMemoryMXBeansAndPoolsPresence G1
+ */
+
+/* @test TestMemoryMXBeansAndPoolsPresenceParallel
+ * @bug 8191564
+ * @summary Tests that GarbageCollectorMXBeans and GC MemoryPools are created.
+ * @library /test/lib
+ * @modules java.base/jdk.internal.misc
+ *          java.management
+ * @requires vm.gc.Parallel
+ * @run main/othervm -XX:+UseParallelGC gc.TestMemoryMXBeansAndPoolsPresence Parallel
+ */
+
+/* @test TestMemoryMXBeansAndPoolsPresenceSerial
+ * @bug 8191564
+ * @summary Tests that GarbageCollectorMXBeans and GC MemoryPools are created.
+ * @library /test/lib
+ * @modules java.base/jdk.internal.misc
+ *          java.management
+ * @requires vm.gc.Serial
+ * @run main/othervm -XX:+UseSerialGC gc.TestMemoryMXBeansAndPoolsPresence Serial
+ */
+
+class GCBeanDescription {
+    public String name;
+    public String[] poolNames;
+
+    public GCBeanDescription(String name, String[] poolNames) {
+        this.name = name;
+        this.poolNames = poolNames;
+    }
+}
+
+public class TestMemoryMXBeansAndPoolsPresence {
+    public static void test(GCBeanDescription... expectedBeans) {
+        List<MemoryPoolMXBean> memoryPools = ManagementFactory.getMemoryPoolMXBeans();
+
+        List<GarbageCollectorMXBean> gcBeans = ManagementFactory.getGarbageCollectorMXBeans();
+        assertEQ(expectedBeans.length, gcBeans.size());
+
+        for (GCBeanDescription desc : expectedBeans) {
+            List<GarbageCollectorMXBean> beans = gcBeans.stream()
+                                                        .filter(b -> b.getName().equals(desc.name))
+                                                        .collect(Collectors.toList());
+            assertEQ(beans.size(), 1);
+
+            GarbageCollectorMXBean bean = beans.get(0);
+            assertEQ(desc.name, bean.getName());
+
+            String[] pools = bean.getMemoryPoolNames();
+            assertEQ(desc.poolNames.length, pools.length);
+            for (int i = 0; i < desc.poolNames.length; i++) {
+                assertEQ(desc.poolNames[i], pools[i]);
+            }
+        }
+    }
+
+    public static void main(String[] args) {
+        switch (args[0]) {
+            case "G1":
+                test(new GCBeanDescription("G1 Young Generation", new String[] {"G1 Eden Space", "G1 Survivor Space", "G1 Old Gen"}),
+                     new GCBeanDescription("G1 Old Generation",   new String[] {"G1 Eden Space", "G1 Survivor Space", "G1 Old Gen"}),
+                     new GCBeanDescription("G1 Concurrent GC",    new String[] {"G1 Old Gen"}));
+                break;
+            case "Parallel":
+                test(new GCBeanDescription("PS Scavenge",         new String[] {"PS Eden Space", "PS Survivor Space"}),
+                     new GCBeanDescription("PS MarkSweep",        new String[] {"PS Eden Space", "PS Survivor Space", "PS Old Gen"}));
+                break;
+            case "Serial":
+                test(new GCBeanDescription("Copy",              new String[] {"Eden Space", "Survivor Space"}),
+                     new GCBeanDescription("MarkSweepCompact",  new String[] {"Eden Space", "Survivor Space", "Tenured Gen"}));
+                break;
+            default:
+                assertTrue(false);
+                break;
+
+        }
+    }
+}