Mercurial > hg > graal-compiler
view test/compiler/testlibrary/rtm/AbortProvoker.java @ 19160:d4f80cf249d0
Run unittest earlier during gate
author | Tom Rodriguez <tom.rodriguez@oracle.com> |
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date | Thu, 05 Feb 2015 15:33:15 -0800 |
parents | 665bbe93823f |
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/* * Copyright (c) 2014, 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. * */ package rtm; import java.util.Objects; import java.util.concurrent.BrokenBarrierException; import java.util.concurrent.CyclicBarrier; import com.oracle.java.testlibrary.Asserts; import com.oracle.java.testlibrary.Utils; import sun.misc.Unsafe; /** * Base class for different transactional execution abortion * provokers aimed to force abort due to specified reason. */ public abstract class AbortProvoker implements CompilableTest { public static final long DEFAULT_ITERATIONS = 10000L; /** * Inflates monitor associated with object {@code monitor}. * Inflation is forced by entering the same monitor from * two different threads. * * @param monitor monitor to be inflated. * @return inflated monitor. * @throws Exception if something went wrong. */ public static Object inflateMonitor(Object monitor) throws Exception { Unsafe unsafe = Utils.getUnsafe(); CyclicBarrier barrier = new CyclicBarrier(2); Runnable inflatingRunnable = () -> { unsafe.monitorEnter(monitor); try { barrier.await(); barrier.await(); } catch (InterruptedException | BrokenBarrierException e) { throw new RuntimeException( "Synchronization issue occurred.", e); } finally { unsafe.monitorExit(monitor); } }; Thread t = new Thread(inflatingRunnable); t.start(); // Wait until thread t enters the monitor. barrier.await(); // At this point monitor will be owned by thread t, // so our attempt to enter the same monitor will force // monitor inflation. Asserts.assertFalse(unsafe.tryMonitorEnter(monitor), "Not supposed to enter the monitor first"); barrier.await(); t.join(); return monitor; } /** * Get instance of specified AbortProvoker, inflate associated monitor * if needed and then invoke forceAbort method in a loop. * * Usage: * AbortProvoker <AbortType name> [<inflate monitor> * [<iterations> [ <delay>]]] * * Default parameters are: * <ul> * <li>inflate monitor = <b>true</b></li> * <li>iterations = {@code AbortProvoker.DEFAULT_ITERATIONS}</li> * <li>delay = <b>0</b></li> * </ul> */ public static void main(String args[]) throws Throwable { Asserts.assertGT(args.length, 0, "At least one argument is required."); AbortType abortType = AbortType.lookup(Integer.valueOf(args[0])); boolean monitorShouldBeInflated = true; long iterations = AbortProvoker.DEFAULT_ITERATIONS; if (args.length > 1) { monitorShouldBeInflated = Boolean.valueOf(args[1]); if (args.length > 2) { iterations = Long.valueOf(args[2]); if (args.length > 3) { Thread.sleep(Integer.valueOf(args[3])); } } } AbortProvoker provoker = abortType.provoker(); if (monitorShouldBeInflated) { provoker.inflateMonitor(); } for (long i = 0; i < iterations; i++) { provoker.forceAbort(); } } protected final Object monitor; protected AbortProvoker() { this(new Object()); } protected AbortProvoker(Object monitor) { this.monitor = Objects.requireNonNull(monitor); } /** * Inflates monitor used by this AbortProvoker instance. * @throws Exception */ public void inflateMonitor() throws Exception { AbortProvoker.inflateMonitor(monitor); } /** * Forces transactional execution abortion. */ public abstract void forceAbort(); /** * Returns names of all methods that have to be compiled * in order to successfully force transactional execution * abortion. * * @return array with methods' names that have to be compiled. */ @Override public String[] getMethodsToCompileNames() { return new String[] { getMethodWithLockName() }; } /** * Returns name of the method that will contain monitor whose locking * will be elided using transactional execution. * * @return name of the method that will contain elided lock. */ @Override public String getMethodWithLockName() { return this.getClass().getName() + "::forceAbort"; } }