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Diffstat (limited to 'test/java/util/concurrent/forkjoin/FJExceptionTableLeak.java')
-rw-r--r-- | test/java/util/concurrent/forkjoin/FJExceptionTableLeak.java | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/test/java/util/concurrent/forkjoin/FJExceptionTableLeak.java b/test/java/util/concurrent/forkjoin/FJExceptionTableLeak.java new file mode 100644 index 000000000..f2780a564 --- /dev/null +++ b/test/java/util/concurrent/forkjoin/FJExceptionTableLeak.java @@ -0,0 +1,73 @@ +/* + * 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 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 + * @author Doug Lea + * @bug 8004138 + * @summary Check if ForkJoinPool table leaks thrown exceptions. + * @run main/othervm -Xmx32m FJExceptionTableLeak + */ +import java.util.concurrent.*; + +public class FJExceptionTableLeak { + + // Run with TASKS_PER_STEP * 40 < Xmx < STEPS * TASKS_PER_STEP * 40 + // These work for Xmx32m: + static final int STEPS = 2000; + static final int TASKS_PER_STEP = 1000; + + static class FailingTaskException extends RuntimeException {} + static class FailingTask extends RecursiveAction { + public void compute() { + throw new FailingTaskException(); + } + } + + public static void main(String[] args) throws InterruptedException { + ForkJoinPool pool = new ForkJoinPool(4); + FailingTask[] tasks = new FailingTask[TASKS_PER_STEP]; + for (int k = 0; k < STEPS; ++k) { + for (int i = 0; i < tasks.length; ++i) + tasks[i] = new FailingTask(); + for (int i = 0; i < tasks.length; ++i) + pool.execute(tasks[i]); + for (int i = 0; i < tasks.length; ++i) { + try { + tasks[i].join(); + throw new AssertionError("should throw"); + } catch (FailingTaskException success) {} + } + } + } +} |