hotspot/test/compiler/c2/InterruptedTest.java
changeset 40059 c2304140ed64
parent 35562 16a8e33e995c
child 41705 332239c052cc
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/test/compiler/c2/InterruptedTest.java	Tue Jul 12 18:24:48 2016 +0300
@@ -0,0 +1,98 @@
+/*
+ * Copyright (c) 2008, 2016, 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 6772683
+ * @summary Thread.isInterrupted() fails to return true on multiprocessor PC
+ *
+ * @run main/othervm compiler.c2.InterruptedTest 100
+ */
+
+package compiler.c2;
+
+public class InterruptedTest {
+
+    public static void main(String[] args) throws Exception {
+        /* The value of the threshold determines for how many seconds
+         * the main thread must wait for the worker thread. On highly
+         * loaded systems it can take a while until the worker thread
+         * obtains CPU time and is able to check if it was interrupted
+         * by the main thread. The higher the threshold the likelier
+         * the worker thread can check if it was interrupted (that is
+         * required for successul test execution).
+         */
+        int threshold = 100;
+
+        if (args.length != 1) {
+            System.out.println("Incorrect number of arguments");
+            System.exit(1);
+        }
+
+        try {
+            threshold = Integer.parseInt(args[0]);
+        } catch (NumberFormatException e) {
+            System.out.println("Invalid argument format");
+            System.exit(1);
+        }
+
+        if (threshold < 1) {
+            System.out.println("Threshold must be at least 1");
+            System.exit(1);
+        }
+
+        Thread workerThread = new Thread("worker") {
+            public void run() {
+                System.out.println("Worker thread: running...");
+                while (!Thread.currentThread().isInterrupted()) {
+                }
+                System.out.println("Worker thread: bye");
+            }
+        };
+        System.out.println("Main thread: starts a worker thread...");
+        workerThread.start();
+        System.out.println("Main thread: waits 5 seconds after starting the worker thread");
+        workerThread.join(5000); // Wait 5 sec to let run() method to be compiled
+
+        int ntries = 0;
+        while (workerThread.isAlive() && ntries < threshold) {
+            System.out.println("Main thread: interrupts the worker thread...");
+            workerThread.interrupt();
+            if (workerThread.isInterrupted()) {
+                System.out.println("Main thread: worker thread is interrupted");
+            }
+            ntries++;
+            System.out.println("Main thread: waits 1 second for the worker thread to die...");
+            workerThread.join(1000); // Wait 1 sec and try again
+        }
+
+        if (ntries == threshold) {
+          System.out.println("Main thread: the worker thread did not die after " +
+                             ntries + " seconds have elapsed");
+          System.exit(97);
+        }
+
+        System.out.println("Main thread: bye");
+    }
+}