Mercurial > hg > graal-compiler
view test/compiler/rtm/locking/TestRTMAfterNonRTMDeopt.java @ 21619:b14a218c5471
Fix in the dominator based conditional elimination for the corner case of a loop exit merge.
author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
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date | Sun, 31 May 2015 22:48:50 +0200 |
parents | ba8268c23fa2 |
children |
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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. * */ /** * @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(); } }