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.

test/jdk/java/lang/instrument/StressGetObjectSizeApp.java

@@ -0,0 +1,86 @@
+/*
+ * Copyright (c) 2008, 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.
+ */
+
+import java.lang.instrument.Instrumentation;
+
+public class StressGetObjectSizeApp
+    extends ASimpleInstrumentationTestCase
+{
+
+    /**
+     * Constructor for StressGetObjectSizeApp.
+     * @param name
+     */
+    public StressGetObjectSizeApp(String name)
+    {
+        super(name);
+    }
+
+    public static void
+    main (String[] args)
+        throws Throwable {
+        ATestCaseScaffold   test = new StressGetObjectSizeApp(args[0]);
+        test.runTest();
+    }
+
+    protected final void
+    doRunTest()
+        throws Throwable {
+        stressGetObjectSize();
+    }
+
+    public void stressGetObjectSize() {
+        System.out.println("main: an object size=" +
+            fInst.getObjectSize(new Object()));
+
+        RoundAndRound[] threads = new RoundAndRound[10];
+        for (int i = 0; i < threads.length; ++i) {
+            threads[i] = new RoundAndRound(fInst);
+            threads[i].start();
+        }
+        try {
+            Thread.sleep(500); // let all threads get going in their loops
+        } catch (InterruptedException ie) {
+        }
+        System.out.println("stressGetObjectSize: returning");
+        return;
+    }
+
+    private static class RoundAndRound extends Thread {
+        private final Instrumentation inst;
+        private final Object anObject;
+
+        public RoundAndRound(Instrumentation inst) {
+            this.inst = inst;
+            this.anObject = new Object();
+            setDaemon(true);
+        }
+
+        public void run() {
+            long sum = 0;
+            while (true) {
+              sum += inst.getObjectSize(anObject);
+            }
+        }
+    }
+}