| /* |
| * Copyright (c) 2010, 2013, 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.io.PrintWriter; |
| import java.io.StringWriter; |
| import java.util.concurrent.ExecutorService; |
| import java.util.concurrent.Executors; |
| import java.util.concurrent.ThreadFactory; |
| import java.util.concurrent.TimeUnit; |
| import java.util.concurrent.atomic.AtomicInteger; |
| import javax.tools.JavaCompiler; |
| import javax.tools.StandardJavaFileManager; |
| import javax.tools.ToolProvider; |
| |
| /** |
| * An abstract superclass for threaded tests. |
| * |
| * This class will try to read a property named test.concurrency. |
| * The property can be provided by passing this option to jtreg: |
| * -javaoption:-Dtest.concurrency=# |
| * |
| * If the property is not set the class will use a heuristic to determine the |
| * maximum number of threads that can be fired to execute a given test. |
| * |
| * This code will have to be revisited if jprt starts using concurrency for |
| * for running jtreg tests. |
| */ |
| public abstract class JavacTestingAbstractThreadedTest { |
| |
| protected static AtomicInteger numberOfThreads = new AtomicInteger(); |
| |
| protected static int getThreadPoolSize() { |
| Integer testConc = Integer.getInteger("test.concurrency"); |
| if (testConc != null) return testConc; |
| int cores = Runtime.getRuntime().availableProcessors(); |
| numberOfThreads.set(Math.max(2, Math.min(8, cores / 2))); |
| return numberOfThreads.get(); |
| } |
| |
| protected static void checkAfterExec() throws InterruptedException { |
| checkAfterExec(true); |
| }; |
| |
| protected static boolean throwAssertionOnError = true; |
| |
| protected static boolean printAll = false; |
| |
| protected static StringWriter errSWriter = new StringWriter(); |
| protected static PrintWriter errWriter = new PrintWriter(errSWriter); |
| |
| protected static StringWriter outSWriter = new StringWriter(); |
| protected static PrintWriter outWriter = new PrintWriter(outSWriter); |
| |
| protected static void checkAfterExec(boolean printCheckCount) |
| throws InterruptedException { |
| pool.shutdown(); |
| pool.awaitTermination(15, TimeUnit.MINUTES); |
| if (errCount.get() > 0) { |
| if (throwAssertionOnError) { |
| closePrinters(); |
| System.err.println(errSWriter.toString()); |
| throw new AssertionError( |
| String.format("%d errors found", errCount.get())); |
| } else { |
| System.err.println( |
| String.format("%d errors found", errCount.get())); |
| } |
| } else if (printCheckCount) { |
| outWriter.println("Total check executed: " + checkCount.get()); |
| } |
| /* |
| * This output is for supporting debugging. It does not mean that a given |
| * test had executed that number of threads concurrently. The value printed |
| * here is the maximum possible amount. |
| */ |
| closePrinters(); |
| if (printAll) { |
| System.out.println(errSWriter.toString()); |
| System.out.println(outSWriter.toString()); |
| } |
| System.out.println("Total number of threads in thread pool: " + |
| numberOfThreads.get()); |
| } |
| |
| protected static void closePrinters() { |
| errWriter.close(); |
| outWriter.close(); |
| } |
| |
| protected static void processException(Throwable t) { |
| errCount.incrementAndGet(); |
| t.printStackTrace(errWriter); |
| pool.shutdown(); |
| } |
| |
| //number of checks executed |
| protected static AtomicInteger checkCount = new AtomicInteger(); |
| |
| //number of errors found while running combo tests |
| protected static AtomicInteger errCount = new AtomicInteger(); |
| |
| //create default shared JavaCompiler - reused across multiple compilations |
| protected static JavaCompiler comp = ToolProvider.getSystemJavaCompiler(); |
| |
| protected static ExecutorService pool = Executors.newFixedThreadPool( |
| getThreadPoolSize(), new ThreadFactory() { |
| @Override |
| public Thread newThread(Runnable r) { |
| Thread t = new Thread(r); |
| t.setUncaughtExceptionHandler(new Thread.UncaughtExceptionHandler() { |
| @Override |
| public void uncaughtException(Thread t, Throwable e) { |
| pool.shutdown(); |
| errCount.incrementAndGet(); |
| e.printStackTrace(System.err); |
| } |
| }); |
| return t; |
| } |
| }); |
| |
| /* |
| * File manager is not thread-safe so it cannot be re-used across multiple |
| * threads. However we cache per-thread FileManager to avoid excessive |
| * object creation |
| */ |
| protected static final ThreadLocal<StandardJavaFileManager> fm = |
| new ThreadLocal<StandardJavaFileManager>() { |
| @Override protected StandardJavaFileManager initialValue() { |
| return comp.getStandardFileManager(null, null, null); |
| } |
| }; |
| |
| } |