| /* |
| * Copyright (c) 2014, 2019, 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. |
| */ |
| |
| /** |
| * @test |
| * @bug 8031320 |
| * @summary Verify that RTMTotalCountIncrRate option affects |
| * RTM locking statistics. |
| * @library /test/lib / |
| * @modules java.base/jdk.internal.misc |
| * java.management |
| * @requires vm.rtm.cpu & vm.rtm.compiler |
| * @build sun.hotspot.WhiteBox |
| * @run driver ClassFileInstaller sun.hotspot.WhiteBox |
| * sun.hotspot.WhiteBox$WhiteBoxPermission |
| * @run main/othervm/native -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions |
| * -XX:+WhiteBoxAPI |
| * compiler.rtm.locking.TestRTMTotalCountIncrRate |
| */ |
| |
| package compiler.rtm.locking; |
| |
| import compiler.testlibrary.rtm.AbortProvoker; |
| import compiler.testlibrary.rtm.XAbortProvoker; |
| import compiler.testlibrary.rtm.CompilableTest; |
| import compiler.testlibrary.rtm.RTMLockingStatistics; |
| import compiler.testlibrary.rtm.RTMTestBase; |
| import jdk.test.lib.Asserts; |
| import jdk.test.lib.process.OutputAnalyzer; |
| import jdk.test.lib.cli.CommandLineOptionTest; |
| |
| import java.util.List; |
| |
| /** |
| * Test verifies that with RTMTotalCountIncrRate=1 RTM locking statistics |
| * contains precise information abort attempted locks and that with other values |
| * statistics contains information abort non-zero locking attempts. |
| * Since assert done for RTMTotalCountIncrRate=1 is pretty strict, test uses |
| * -XX:RTMRetryCount=0 to avoid issue with retriable aborts. For more details on |
| * that issue see {@link TestUseRTMAfterLockInflation}. |
| */ |
| public class TestRTMTotalCountIncrRate { |
| protected void runTestCases() throws Throwable { |
| verifyLocksCount(1, false); |
| verifyLocksCount(64, false); |
| verifyLocksCount(128, false); |
| verifyLocksCount(1, true); |
| verifyLocksCount(64, true); |
| verifyLocksCount(128, true); |
| } |
| |
| private void verifyLocksCount(int incrRate, boolean useStackLock) |
| throws Throwable{ |
| CompilableTest test = new Test(); |
| |
| OutputAnalyzer outputAnalyzer = RTMTestBase.executeRTMTest( |
| test, |
| CommandLineOptionTest.prepareBooleanFlag("UseRTMForStackLocks", |
| useStackLock), |
| CommandLineOptionTest.prepareNumericFlag( |
| "RTMTotalCountIncrRate", incrRate), |
| "-XX:RTMRetryCount=0", |
| "-XX:+PrintPreciseRTMLockingStatistics", |
| Test.class.getName(), |
| Boolean.toString(!useStackLock) |
| ); |
| |
| outputAnalyzer.shouldHaveExitValue(0); |
| |
| List<RTMLockingStatistics> statistics = RTMLockingStatistics.fromString( |
| test.getMethodWithLockName(), outputAnalyzer.getOutput()); |
| |
| Asserts.assertEQ(statistics.size(), 1, "VM output should contain " |
| + "exactly one RTM locking statistics entry for method " |
| + test.getMethodWithLockName()); |
| |
| RTMLockingStatistics lock = statistics.get(0); |
| if (incrRate == 1) { |
| Asserts.assertEQ(lock.getTotalLocks(), Test.TOTAL_ITERATIONS, |
| "Total locks should be exactly the same as amount of " |
| + "iterations."); |
| } |
| } |
| |
| public static class Test implements CompilableTest { |
| private static final long TOTAL_ITERATIONS = 10000L; |
| private final XAbortProvoker xabort = new XAbortProvoker(); |
| private final Object monitor = new Object(); |
| // Following field have to be static in order to avoid escape analysis. |
| @SuppressWarnings("UnsuedDeclaration") |
| private static int field = 0; |
| |
| @Override |
| public String getMethodWithLockName() { |
| return this.getClass().getName() + "::lock"; |
| } |
| |
| @Override |
| public String[] getMethodsToCompileNames() { |
| return new String[] { getMethodWithLockName(), "*.doAbort" }; |
| } |
| |
| public void lock(boolean forceAbort) { |
| synchronized(monitor) { |
| if (forceAbort) { |
| // We're calling native method in order to force |
| // abort. It's done by explicit xabort call emitted |
| // in SharedRuntime::generate_native_wrapper. |
| // If an actual JNI call will be replaced by |
| // intrinsic - we'll be in trouble, since xabort |
| // will be no longer called and test may fail. |
| xabort.doAbort(); |
| } |
| Test.field++; |
| } |
| } |
| |
| /** |
| * Usage: |
| * Test <inflate monitor> |
| */ |
| public static void main(String args[]) throws Throwable { |
| Asserts.assertGTE(args.length, 1, "One argument required."); |
| Test test = new Test(); |
| boolean shouldBeInflated = Boolean.valueOf(args[0]); |
| if (shouldBeInflated) { |
| AbortProvoker.inflateMonitor(test.monitor); |
| } |
| for (long i = 0L; i < Test.TOTAL_ITERATIONS; i++) { |
| AbortProvoker.verifyMonitorState(test.monitor, |
| shouldBeInflated); |
| // Force abort on first iteration to avoid rare case when |
| // there were no aborts and locks count was not incremented |
| // with RTMTotalCountIncrRate > 1 (in such case JVM won't |
| // print JVM locking statistics). |
| test.lock(i == 0); |
| } |
| } |
| } |
| |
| public static void main(String args[]) throws Throwable { |
| new TestRTMTotalCountIncrRate().runTestCases(); |
| } |
| } |