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/management/ThreadMXBean/Utils.java

@@ -0,0 +1,79 @@
+/*
+ * Copyright (c) 2003, 2006, 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.
+ */
+
+/*
+ * Utility class for ThreadMXBean tests
+ */
+import java.lang.management.ManagementFactory;
+import java.lang.management.ThreadMXBean;
+
+public class Utils {
+    private static final ThreadMXBean tm = ManagementFactory.getThreadMXBean();
+    private static final int MAX_RETRY = 200;
+
+    public static boolean waitForBlockWaitingState(Thread t) {
+        // wait for the thread to transition to the expected state
+        int retryCount=0;
+        while (t.getState() == Thread.State.RUNNABLE && retryCount < MAX_RETRY) {
+            goSleep(100);
+            retryCount++;
+        }
+        return (t.getState() != Thread.State.RUNNABLE);
+    }
+
+    public static boolean waitForThreadState(Thread t, Thread.State expected) {
+        // wait for the thread to transition to the expected state
+        int retryCount=0;
+        while (t.getState() != expected && retryCount < MAX_RETRY) {
+            goSleep(100);
+            retryCount++;
+        }
+        return (t.getState() == expected);
+    }
+
+    public static void checkThreadState(Thread t, Thread.State expected) {
+        waitForThreadState(t, expected);
+
+        Thread.State state = tm.getThreadInfo(t.getId()).getThreadState();
+        if (state == null) {
+            throw new RuntimeException(t.getName() + " expected to have " +
+                expected + " but got null.");
+        }
+        if (state != expected) {
+            t.dumpStack();
+            throw new RuntimeException(t.getName() +
+                 " expected to have " + expected + " but got " + state);
+        }
+    }
+
+    public static void goSleep(long ms) {
+        try {
+            Thread.sleep(ms);
+        } catch (InterruptedException e) {
+            e.printStackTrace();
+            System.out.println("TEST FAILED: Unexpected exception.");
+            throw new RuntimeException(e);
+        }
+    }
+
+}