1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/test/compiler/rtm/locking/TestRTMAfterNonRTMDeopt.java Wed Apr 27 01:25:04 2016 +0800
1.3 @@ -0,0 +1,210 @@
1.4 +/*
1.5 + * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.7 + *
1.8 + * This code is free software; you can redistribute it and/or modify it
1.9 + * under the terms of the GNU General Public License version 2 only, as
1.10 + * published by the Free Software Foundation.
1.11 + *
1.12 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.14 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.15 + * version 2 for more details (a copy is included in the LICENSE file that
1.16 + * accompanied this code).
1.17 + *
1.18 + * You should have received a copy of the GNU General Public License version
1.19 + * 2 along with this work; if not, write to the Free Software Foundation,
1.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.21 + *
1.22 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
1.23 + * or visit www.oracle.com if you need additional information or have any
1.24 + * questions.
1.25 + *
1.26 + */
1.27 +
1.28 +/**
1.29 + * @test
1.30 + * @bug 8031320
1.31 + * @summary Verify that if we use RTMDeopt, then deoptimization
1.32 + * caused by reason other then rtm_state_change will reset
1.33 + * method's RTM state. And if we don't use RTMDeopt, then
1.34 + * RTM state remain the same after such deoptimization.
1.35 + * @library /testlibrary /testlibrary/whitebox /compiler/testlibrary
1.36 + * @build TestRTMAfterNonRTMDeopt
1.37 + * @run main ClassFileInstaller sun.hotspot.WhiteBox
1.38 + * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
1.39 + * -XX:+WhiteBoxAPI TestRTMAfterNonRTMDeopt
1.40 + */
1.41 +
1.42 +import java.util.List;
1.43 +import com.oracle.java.testlibrary.*;
1.44 +import com.oracle.java.testlibrary.cli.CommandLineOptionTest;
1.45 +import com.oracle.java.testlibrary.cli.predicate.AndPredicate;
1.46 +import rtm.*;
1.47 +import rtm.predicate.SupportedCPU;
1.48 +import rtm.predicate.SupportedVM;
1.49 +import sun.misc.Unsafe;
1.50 +
1.51 +/**
1.52 + * To verify that with +UseRTMDeopt method's RTM state will be
1.53 + * changed to ProfileRTM on deoptimization unrelated to
1.54 + * rtm_state_change following sequence of events is used:
1.55 + * <pre>
1.56 + *
1.57 + * rtm state ^
1.58 + * |
1.59 + * UseRTM | ******| ******
1.60 + * | |
1.61 + * ProfileRTM |******| |*****|
1.62 + * | | | |
1.63 + * 0-------|-----|-----|---------------------> time
1.64 + * | | \ force abort
1.65 + * | |
1.66 + * | \ force deoptimization
1.67 + * |
1.68 + * \ force xabort
1.69 + * </pre>
1.70 + * When xabort is forced by native method call method should
1.71 + * change it's state to UseRTM, because we use RTMAbortRatio=100
1.72 + * and low RTMLockingThreshold, so at this point actual abort
1.73 + * ratio will be below 100% and there should be enough lock
1.74 + * attempts to recompile method without RTM profiling.
1.75 + */
1.76 +public class TestRTMAfterNonRTMDeopt extends CommandLineOptionTest {
1.77 + private static final int ABORT_THRESHOLD = 1000;
1.78 + private static final String RANGE_CHECK = "range_check";
1.79 +
1.80 + private TestRTMAfterNonRTMDeopt() {
1.81 + super(new AndPredicate(new SupportedCPU(), new SupportedVM()));
1.82 + }
1.83 +
1.84 + @Override
1.85 + protected void runTestCases() throws Throwable {
1.86 + verifyRTMAfterDeopt(false, false);
1.87 + verifyRTMAfterDeopt(true, false);
1.88 +
1.89 + verifyRTMAfterDeopt(false, true);
1.90 + verifyRTMAfterDeopt(true, true);
1.91 + }
1.92 +
1.93 + private void verifyRTMAfterDeopt(boolean useStackLock,
1.94 + boolean useRTMDeopt) throws Throwable {
1.95 + CompilableTest test = new Test();
1.96 + String logFile = String.format("rtm_%s_stack_lock_%s_deopt.xml",
1.97 + (useStackLock ? "use" : "no"), (useRTMDeopt ? "use" : "no"));
1.98 +
1.99 + OutputAnalyzer outputAnalyzer = RTMTestBase.executeRTMTest(
1.100 + logFile,
1.101 + test,
1.102 + "-XX:CompileThreshold=1",
1.103 + CommandLineOptionTest.prepareBooleanFlag("UseRTMForStackLocks",
1.104 + useStackLock),
1.105 + CommandLineOptionTest.prepareBooleanFlag("UseRTMDeopt",
1.106 + useRTMDeopt),
1.107 + "-XX:RTMAbortRatio=100",
1.108 + CommandLineOptionTest.prepareNumericFlag("RTMAbortThreshold",
1.109 + TestRTMAfterNonRTMDeopt.ABORT_THRESHOLD),
1.110 + CommandLineOptionTest.prepareNumericFlag("RTMLockingThreshold",
1.111 + TestRTMAfterNonRTMDeopt.ABORT_THRESHOLD / 2L),
1.112 + "-XX:RTMTotalCountIncrRate=1",
1.113 + "-XX:+PrintPreciseRTMLockingStatistics",
1.114 + Test.class.getName(),
1.115 + Boolean.toString(!useStackLock)
1.116 + );
1.117 +
1.118 + outputAnalyzer.shouldHaveExitValue(0);
1.119 +
1.120 + int traps = RTMTestBase.firedRTMStateChangeTraps(logFile);
1.121 +
1.122 + if (useRTMDeopt) {
1.123 + Asserts.assertEQ(traps, 2, "Two uncommon traps with "
1.124 + + "reason rtm_state_change should be fired.");
1.125 + } else {
1.126 + Asserts.assertEQ(traps, 0, "No uncommon traps with "
1.127 + + "reason rtm_state_change should be fired.");
1.128 + }
1.129 +
1.130 + int rangeCheckTraps = RTMTestBase.firedUncommonTraps(logFile,
1.131 + TestRTMAfterNonRTMDeopt.RANGE_CHECK);
1.132 +
1.133 + Asserts.assertEQ(rangeCheckTraps, 1,
1.134 + "One range_check uncommon trap should be fired.");
1.135 +
1.136 + List<RTMLockingStatistics> statistics = RTMLockingStatistics.fromString(
1.137 + test.getMethodWithLockName(), outputAnalyzer.getOutput());
1.138 +
1.139 + int expectedStatEntries = (useRTMDeopt ? 4 : 2);
1.140 +
1.141 + Asserts.assertEQ(statistics.size(), expectedStatEntries,
1.142 + String.format("VM output should contain %d RTM locking "
1.143 + + "statistics entries.", expectedStatEntries));
1.144 + }
1.145 +
1.146 + public static class Test implements CompilableTest {
1.147 + // Following field have to be static in order to avoid escape analysis.
1.148 + @SuppressWarnings("UnsuedDeclaration")
1.149 + private static int field = 0;
1.150 + private static final int ITERATIONS = 10000;
1.151 + private static final int RANGE_CHECK_AT = ITERATIONS / 2;
1.152 + private static final Unsafe UNSAFE = Utils.getUnsafe();
1.153 + private final Object monitor = new Object();
1.154 +
1.155 + @Override
1.156 + public String getMethodWithLockName() {
1.157 + return this.getClass().getName() + "::forceAbort";
1.158 + }
1.159 +
1.160 + @Override
1.161 + public String[] getMethodsToCompileNames() {
1.162 + return new String[] {
1.163 + getMethodWithLockName(),
1.164 + sun.misc.Unsafe.class.getName() + "::forceAbort"
1.165 + };
1.166 + }
1.167 +
1.168 + public void forceAbort(int a[], boolean abort) {
1.169 + try {
1.170 + synchronized(monitor) {
1.171 + a[0]++;
1.172 + if (abort) {
1.173 + Test.field = Test.UNSAFE.addressSize();
1.174 + }
1.175 + }
1.176 + } catch (Throwable t) {
1.177 + // suppress any throwables
1.178 + }
1.179 + }
1.180 +
1.181 + /**
1.182 + * Usage:
1.183 + * Test <inflate monitor>
1.184 + */
1.185 + public static void main(String args[]) throws Throwable {
1.186 + Test t = new Test();
1.187 +
1.188 + if (Boolean.valueOf(args[0])) {
1.189 + AbortProvoker.inflateMonitor(t.monitor);
1.190 + }
1.191 +
1.192 + int tmp[] = new int[1];
1.193 +
1.194 + for (int i = 0; i < Test.ITERATIONS; i++ ) {
1.195 + if (i == Test.RANGE_CHECK_AT) {
1.196 + t.forceAbort(new int[0], false);
1.197 + } else {
1.198 + boolean isThreshold
1.199 + = (i == TestRTMAfterNonRTMDeopt.ABORT_THRESHOLD);
1.200 + boolean isThresholdPlusRange
1.201 + = (i == TestRTMAfterNonRTMDeopt.ABORT_THRESHOLD
1.202 + + Test.RANGE_CHECK_AT);
1.203 + t.forceAbort(tmp, isThreshold || isThresholdPlusRange);
1.204 + }
1.205 + }
1.206 + }
1.207 + }
1.208 +
1.209 + public static void main(String args[]) throws Throwable {
1.210 + new TestRTMAfterNonRTMDeopt().test();
1.211 + }
1.212 +}
1.213 +
