jdk/test/java/util/concurrent/ThreadPoolExecutor/FlakyThreadFactory.java
changeset 32991 b27c76b82713
child 34347 4a17f9e90a0f
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/test/java/util/concurrent/ThreadPoolExecutor/FlakyThreadFactory.java	Tue Oct 13 16:45:35 2015 -0700
@@ -0,0 +1,108 @@
+/*
+ * 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.
+ */
+
+/*
+ * This file is available under and governed by the GNU General Public
+ * License version 2 only, as published by the Free Software Foundation.
+ * However, the following notice accompanied the original version of this
+ * file:
+ *
+ * Written by Martin Buchholz and Doug Lea with assistance from
+ * members of JCP JSR-166 Expert Group and released to the public
+ * domain, as explained at
+ * http://creativecommons.org/publicdomain/zero/1.0/
+ */
+
+/*
+ * @test
+ * @summary Should be able to shutdown a pool when worker creation failed.
+ */
+
+import java.util.concurrent.*;
+
+public class FlakyThreadFactory {
+    void test(String[] args) throws Throwable {
+        test(NullPointerException.class,
+             new ThreadFactory() {
+                public Thread newThread(Runnable r) {
+                    throw new NullPointerException();
+                }});
+        test(OutOfMemoryError.class,
+             new ThreadFactory() {
+                public Thread newThread(Runnable r) {
+                    new Thread(null, r, "a natural OOME", 1L << 60);
+                    // """On some platforms, the value of the stackSize
+                    // parameter may have no effect whatsoever."""
+                    throw new OutOfMemoryError("artificial OOME");
+                }});
+        test(null,
+             new ThreadFactory() {
+                public Thread newThread(Runnable r) {
+                    return null;
+                }});
+    }
+
+    void test(final Class<?> exceptionClass,
+              final ThreadFactory failingThreadFactory)
+            throws Throwable {
+        ThreadFactory flakyThreadFactory = new ThreadFactory() {
+            int seq = 0;
+            public Thread newThread(Runnable r) {
+                if (seq++ < 4)
+                    return new Thread(r);
+                else
+                    return failingThreadFactory.newThread(r);
+            }};
+        ThreadPoolExecutor pool =
+            new ThreadPoolExecutor(10, 10,
+                                   0L, TimeUnit.SECONDS,
+                                   new LinkedBlockingQueue(),
+                                   flakyThreadFactory);
+        try {
+            for (int i = 0; i < 8; i++)
+                pool.submit(new Runnable() { public void run() {} });
+            check(exceptionClass == null);
+        } catch (Throwable t) {
+            /* t.printStackTrace(); */
+            check(exceptionClass.isInstance(t));
+        }
+        pool.shutdown();
+        check(pool.awaitTermination(10L, TimeUnit.SECONDS));
+    }
+
+    //--------------------- Infrastructure ---------------------------
+    volatile int passed = 0, failed = 0;
+    void pass() {passed++;}
+    void fail() {failed++; Thread.dumpStack();}
+    void fail(String msg) {System.err.println(msg); fail();}
+    void unexpected(Throwable t) {failed++; t.printStackTrace();}
+    void check(boolean cond) {if (cond) pass(); else fail();}
+    void equal(Object x, Object y) {
+        if (x == null ? y == null : x.equals(y)) pass();
+        else fail(x + " not equal to " + y);}
+    public static void main(String[] args) throws Throwable {
+        new FlakyThreadFactory().instanceMain(args);}
+    public void instanceMain(String[] args) throws Throwable {
+        try {test(args);} catch (Throwable t) {unexpected(t);}
+        System.out.printf("%nPassed = %d, failed = %d%n%n", passed, failed);
+        if (failed > 0) throw new AssertionError("Some tests failed");}
+}