author | ctornqvi |
Fri, 19 Aug 2016 10:06:30 -0400 | |
changeset 40631 | ed82623d7831 |
parent 40059 | c2304140ed64 |
child 40855 | 3c4c913195e3 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2014, 2016, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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* |
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*/ |
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/** |
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* @test |
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* @bug 8031320 |
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* @summary Verify that RTMTotalCountIncrRate option affects |
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* RTM locking statistics. |
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* @library /test/lib / |
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* @modules java.base/jdk.internal.misc |
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* java.management |
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* @build sun.hotspot.WhiteBox |
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* @run driver ClassFileInstaller sun.hotspot.WhiteBox |
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* sun.hotspot.WhiteBox$WhiteBoxPermission |
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* @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions |
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* -XX:+WhiteBoxAPI |
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* compiler.rtm.locking.TestRTMTotalCountIncrRate |
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*/ |
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package compiler.rtm.locking; |
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import compiler.testlibrary.rtm.AbortProvoker; |
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import compiler.testlibrary.rtm.CompilableTest; |
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import compiler.testlibrary.rtm.RTMLockingStatistics; |
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import compiler.testlibrary.rtm.RTMTestBase; |
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import compiler.testlibrary.rtm.predicate.SupportedCPU; |
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import compiler.testlibrary.rtm.predicate.SupportedVM; |
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import jdk.internal.misc.Unsafe; |
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import jdk.test.lib.Asserts; |
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import jdk.test.lib.process.OutputAnalyzer; |
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import jdk.test.lib.Utils; |
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import jdk.test.lib.cli.CommandLineOptionTest; |
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import jdk.test.lib.cli.predicate.AndPredicate; |
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import java.util.List; |
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/** |
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* Test verifies that with RTMTotalCountIncrRate=1 RTM locking statistics |
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* contains precise information abort attempted locks and that with other values |
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* statistics contains information abort non-zero locking attempts. |
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* Since assert done for RTMTotalCountIncrRate=1 is pretty strict, test uses |
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* -XX:RTMRetryCount=0 to avoid issue with retriable aborts. For more details on |
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* that issue see {@link TestUseRTMAfterLockInflation}. |
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*/ |
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public class TestRTMTotalCountIncrRate extends CommandLineOptionTest { |
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private TestRTMTotalCountIncrRate() { |
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super(new AndPredicate(new SupportedCPU(), new SupportedVM())); |
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} |
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@Override |
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protected void runTestCases() throws Throwable { |
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verifyLocksCount(1, false); |
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verifyLocksCount(64, false); |
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verifyLocksCount(128, false); |
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verifyLocksCount(1, true); |
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verifyLocksCount(64, true); |
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verifyLocksCount(128, true); |
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} |
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private void verifyLocksCount(int incrRate, boolean useStackLock) |
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throws Throwable{ |
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CompilableTest test = new Test(); |
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OutputAnalyzer outputAnalyzer = RTMTestBase.executeRTMTest( |
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test, |
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CommandLineOptionTest.prepareBooleanFlag("UseRTMForStackLocks", |
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useStackLock), |
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CommandLineOptionTest.prepareNumericFlag( |
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"RTMTotalCountIncrRate", incrRate), |
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"-XX:RTMRetryCount=0", |
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"-XX:+PrintPreciseRTMLockingStatistics", |
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Test.class.getName(), |
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Boolean.toString(!useStackLock) |
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); |
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outputAnalyzer.shouldHaveExitValue(0); |
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List<RTMLockingStatistics> statistics = RTMLockingStatistics.fromString( |
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test.getMethodWithLockName(), outputAnalyzer.getOutput()); |
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Asserts.assertEQ(statistics.size(), 1, "VM output should contain " |
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+ "exactly one RTM locking statistics entry for method " |
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+ test.getMethodWithLockName()); |
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RTMLockingStatistics lock = statistics.get(0); |
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if (incrRate == 1) { |
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Asserts.assertEQ(lock.getTotalLocks(), Test.TOTAL_ITERATIONS, |
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"Total locks should be exactly the same as amount of " |
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+ "iterations."); |
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} |
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} |
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public static class Test implements CompilableTest { |
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private static final long TOTAL_ITERATIONS = 10000L; |
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private static final Unsafe UNSAFE = Utils.getUnsafe(); |
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private final Object monitor = new Object(); |
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// Following field have to be static in order to avoid escape analysis. |
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@SuppressWarnings("UnsuedDeclaration") |
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private static int field = 0; |
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@Override |
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public String getMethodWithLockName() { |
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return this.getClass().getName() + "::lock"; |
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} |
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@Override |
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public String[] getMethodsToCompileNames() { |
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return new String[] { getMethodWithLockName() }; |
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} |
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public void lock(boolean forceAbort) { |
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synchronized(monitor) { |
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if (forceAbort) { |
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// We're calling native method in order to force |
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// abort. It's done by explicit xabort call emitted |
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// in SharedRuntime::generate_native_wrapper. |
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// If an actual JNI call will be replaced by |
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// intrinsic - we'll be in trouble, since xabort |
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// will be no longer called and test may fail. |
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UNSAFE.addressSize(); |
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} |
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Test.field++; |
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} |
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} |
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/** |
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* Usage: |
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* Test <inflate monitor> |
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*/ |
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public static void main(String args[]) throws Throwable { |
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Asserts.assertGTE(args.length, 1, "One argument required."); |
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Test test = new Test(); |
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boolean shouldBeInflated = Boolean.valueOf(args[0]); |
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if (shouldBeInflated) { |
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AbortProvoker.inflateMonitor(test.monitor); |
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} |
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for (long i = 0L; i < Test.TOTAL_ITERATIONS; i++) { |
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AbortProvoker.verifyMonitorState(test.monitor, |
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shouldBeInflated); |
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// Force abort on first iteration to avoid rare case when |
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// there were no aborts and locks count was not incremented |
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// with RTMTotalCountIncrRate > 1 (in such case JVM won't |
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// print JVM locking statistics). |
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test.lock(i == 0); |
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} |
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} |
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} |
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|
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public static void main(String args[]) throws Throwable { |
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new TestRTMTotalCountIncrRate().test(); |
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} |
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} |