Mercurial > hg > truffle
diff test/compiler/rtm/locking/TestRTMAfterNonRTMDeopt.java @ 18058:54bc75c144b0
Merge
author | asaha |
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date | Thu, 29 May 2014 13:14:25 -0700 |
parents | ba8268c23fa2 |
children |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/test/compiler/rtm/locking/TestRTMAfterNonRTMDeopt.java Thu May 29 13:14:25 2014 -0700 @@ -0,0 +1,210 @@ +/* + * 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. + * + */ + +/** + * @test + * @bug 8031320 + * @summary Verify that if we use RTMDeopt, then deoptimization + * caused by reason other then rtm_state_change will reset + * method's RTM state. And if we don't use RTMDeopt, then + * RTM state remain the same after such deoptimization. + * @library /testlibrary /testlibrary/whitebox /compiler/testlibrary + * @build TestRTMAfterNonRTMDeopt + * @run main ClassFileInstaller sun.hotspot.WhiteBox + * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions + * -XX:+WhiteBoxAPI TestRTMAfterNonRTMDeopt + */ + +import java.util.List; +import com.oracle.java.testlibrary.*; +import com.oracle.java.testlibrary.cli.CommandLineOptionTest; +import com.oracle.java.testlibrary.cli.predicate.AndPredicate; +import rtm.*; +import rtm.predicate.SupportedCPU; +import rtm.predicate.SupportedVM; +import sun.misc.Unsafe; + +/** + * To verify that with +UseRTMDeopt method's RTM state will be + * changed to ProfileRTM on deoptimization unrelated to + * rtm_state_change following sequence of events is used: + * <pre> + * + * rtm state ^ + * | + * UseRTM | ******| ****** + * | | + * ProfileRTM |******| |*****| + * | | | | + * 0-------|-----|-----|---------------------> time + * | | \ force abort + * | | + * | \ force deoptimization + * | + * \ force xabort + * </pre> + * When xabort is forced by native method call method should + * change it's state to UseRTM, because we use RTMAbortRatio=100 + * and low RTMLockingThreshold, so at this point actual abort + * ratio will be below 100% and there should be enough lock + * attempts to recompile method without RTM profiling. + */ +public class TestRTMAfterNonRTMDeopt extends CommandLineOptionTest { + private static final int ABORT_THRESHOLD = 1000; + private static final String RANGE_CHECK = "range_check"; + + private TestRTMAfterNonRTMDeopt() { + super(new AndPredicate(new SupportedCPU(), new SupportedVM())); + } + + @Override + protected void runTestCases() throws Throwable { + verifyRTMAfterDeopt(false, false); + verifyRTMAfterDeopt(true, false); + + verifyRTMAfterDeopt(false, true); + verifyRTMAfterDeopt(true, true); + } + + private void verifyRTMAfterDeopt(boolean useStackLock, + boolean useRTMDeopt) throws Throwable { + CompilableTest test = new Test(); + String logFile = String.format("rtm_%s_stack_lock_%s_deopt.xml", + (useStackLock ? "use" : "no"), (useRTMDeopt ? "use" : "no")); + + OutputAnalyzer outputAnalyzer = RTMTestBase.executeRTMTest( + logFile, + test, + "-XX:CompileThreshold=1", + CommandLineOptionTest.prepareBooleanFlag("UseRTMForStackLocks", + useStackLock), + CommandLineOptionTest.prepareBooleanFlag("UseRTMDeopt", + useRTMDeopt), + "-XX:RTMAbortRatio=100", + CommandLineOptionTest.prepareNumericFlag("RTMAbortThreshold", + TestRTMAfterNonRTMDeopt.ABORT_THRESHOLD), + CommandLineOptionTest.prepareNumericFlag("RTMLockingThreshold", + TestRTMAfterNonRTMDeopt.ABORT_THRESHOLD / 2L), + "-XX:RTMTotalCountIncrRate=1", + "-XX:+PrintPreciseRTMLockingStatistics", + Test.class.getName(), + Boolean.toString(!useStackLock) + ); + + outputAnalyzer.shouldHaveExitValue(0); + + int traps = RTMTestBase.firedRTMStateChangeTraps(logFile); + + if (useRTMDeopt) { + Asserts.assertEQ(traps, 2, "Two uncommon traps with " + + "reason rtm_state_change should be fired."); + } else { + Asserts.assertEQ(traps, 0, "No uncommon traps with " + + "reason rtm_state_change should be fired."); + } + + int rangeCheckTraps = RTMTestBase.firedUncommonTraps(logFile, + TestRTMAfterNonRTMDeopt.RANGE_CHECK); + + Asserts.assertEQ(rangeCheckTraps, 1, + "One range_check uncommon trap should be fired."); + + List<RTMLockingStatistics> statistics = RTMLockingStatistics.fromString( + test.getMethodWithLockName(), outputAnalyzer.getOutput()); + + int expectedStatEntries = (useRTMDeopt ? 4 : 2); + + Asserts.assertEQ(statistics.size(), expectedStatEntries, + String.format("VM output should contain %d RTM locking " + + "statistics entries.", expectedStatEntries)); + } + + public static class Test implements CompilableTest { + // Following field have to be static in order to avoid escape analysis. + @SuppressWarnings("UnsuedDeclaration") + private static int field = 0; + private static final int ITERATIONS = 10000; + private static final int RANGE_CHECK_AT = ITERATIONS / 2; + private static final Unsafe UNSAFE = Utils.getUnsafe(); + private final Object monitor = new Object(); + + @Override + public String getMethodWithLockName() { + return this.getClass().getName() + "::forceAbort"; + } + + @Override + public String[] getMethodsToCompileNames() { + return new String[] { + getMethodWithLockName(), + sun.misc.Unsafe.class.getName() + "::forceAbort" + }; + } + + public void forceAbort(int a[], boolean abort) { + try { + synchronized(monitor) { + a[0]++; + if (abort) { + Test.field = Test.UNSAFE.addressSize(); + } + } + } catch (Throwable t) { + // suppress any throwables + } + } + + /** + * Usage: + * Test <inflate monitor> + */ + public static void main(String args[]) throws Throwable { + Test t = new Test(); + + if (Boolean.valueOf(args[0])) { + AbortProvoker.inflateMonitor(t.monitor); + } + + int tmp[] = new int[1]; + + for (int i = 0; i < Test.ITERATIONS; i++ ) { + if (i == Test.RANGE_CHECK_AT) { + t.forceAbort(new int[0], false); + } else { + boolean isThreshold + = (i == TestRTMAfterNonRTMDeopt.ABORT_THRESHOLD); + boolean isThresholdPlusRange + = (i == TestRTMAfterNonRTMDeopt.ABORT_THRESHOLD + + Test.RANGE_CHECK_AT); + t.forceAbort(tmp, isThreshold || isThresholdPlusRange); + } + } + } + } + + public static void main(String args[]) throws Throwable { + new TestRTMAfterNonRTMDeopt().test(); + } +} +