--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/test/compiler/testlibrary/rtm/AbortProvoker.java Fri Apr 11 00:35:11 2014 +0400
@@ -0,0 +1,172 @@
+/*
+ * 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";
+ }
+}