1 /* 2 * Copyright (c) 2014, 2015, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 /** 26 * @test 27 * @bug 8031320 28 * @summary Verify that RTMTotalCountIncrRate option affects 29 * RTM locking statistics. 30 * @library /testlibrary /../../test/lib /compiler/testlibrary 31 * @modules java.base/sun.misc 32 * java.management 33 * @build TestRTMTotalCountIncrRate 34 * @run main ClassFileInstaller sun.hotspot.WhiteBox 35 * sun.hotspot.WhiteBox$WhiteBoxPermission 36 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions 37 * -XX:+WhiteBoxAPI TestRTMTotalCountIncrRate 38 */ 39 40 import sun.misc.Unsafe; 41 import java.util.List; 42 43 import com.oracle.java.testlibrary.*; 44 import com.oracle.java.testlibrary.cli.CommandLineOptionTest; 45 import com.oracle.java.testlibrary.cli.predicate.AndPredicate; 46 import rtm.*; 47 import rtm.predicate.SupportedCPU; 48 import rtm.predicate.SupportedVM; 49 50 /** 51 * Test verifies that with RTMTotalCountIncrRate=1 RTM locking statistics 52 * contains precise information abort attempted locks and that with other values 53 * statistics contains information abort non-zero locking attempts. 54 * Since assert done for RTMTotalCountIncrRate=1 is pretty strict, test uses 55 * -XX:RTMRetryCount=0 to avoid issue with retriable aborts. For more details on 56 * that issue see {@link TestUseRTMAfterLockInflation}. 57 */ 58 public class TestRTMTotalCountIncrRate extends CommandLineOptionTest { 59 private TestRTMTotalCountIncrRate() { 60 super(new AndPredicate(new SupportedCPU(), new SupportedVM())); 61 } 62 63 @Override 64 protected void runTestCases() throws Throwable { 65 verifyLocksCount(1, false); 66 verifyLocksCount(64, false); 67 verifyLocksCount(128, false); 68 verifyLocksCount(1, true); 69 verifyLocksCount(64, true); 70 verifyLocksCount(128, true); 71 } 72 73 private void verifyLocksCount(int incrRate, boolean useStackLock) 74 throws Throwable{ 75 CompilableTest test = new Test(); 76 77 OutputAnalyzer outputAnalyzer = RTMTestBase.executeRTMTest( 78 test, 79 CommandLineOptionTest.prepareBooleanFlag("UseRTMForStackLocks", 80 useStackLock), 81 CommandLineOptionTest.prepareNumericFlag( 82 "RTMTotalCountIncrRate", incrRate), 83 "-XX:RTMRetryCount=0", 84 "-XX:+PrintPreciseRTMLockingStatistics", 85 Test.class.getName(), 86 Boolean.toString(!useStackLock) 87 ); 88 89 outputAnalyzer.shouldHaveExitValue(0); 90 91 List<RTMLockingStatistics> statistics = RTMLockingStatistics.fromString( 92 test.getMethodWithLockName(), outputAnalyzer.getOutput()); 93 94 Asserts.assertEQ(statistics.size(), 1, "VM output should contain " 95 + "exactly one RTM locking statistics entry for method " 96 + test.getMethodWithLockName()); 97 98 RTMLockingStatistics lock = statistics.get(0); 99 if (incrRate == 1) { 100 Asserts.assertEQ(lock.getTotalLocks(), Test.TOTAL_ITERATIONS, 101 "Total locks should be exactly the same as amount of " 102 + "iterations."); 103 } 104 } 105 106 public static class Test implements CompilableTest { 107 private static final long TOTAL_ITERATIONS = 10000L; 108 private static final Unsafe UNSAFE = Utils.getUnsafe(); 109 private final Object monitor = new Object(); 110 // Following field have to be static in order to avoid escape analysis. 111 @SuppressWarnings("UnsuedDeclaration") 112 private static int field = 0; 113 114 @Override 115 public String getMethodWithLockName() { 116 return this.getClass().getName() + "::lock"; 117 } 118 119 @Override 120 public String[] getMethodsToCompileNames() { 121 return new String[] { getMethodWithLockName() }; 122 } 123 124 public void lock(boolean forceAbort) { 125 synchronized(monitor) { 126 if (forceAbort) { 127 // We're calling native method in order to force 128 // abort. It's done by explicit xabort call emitted 129 // in SharedRuntime::generate_native_wrapper. 130 // If an actual JNI call will be replaced by 131 // intrinsic - we'll be in trouble, since xabort 132 // will be no longer called and test may fail. 133 UNSAFE.addressSize(); 134 } 135 Test.field++; 136 } 137 } 138 139 /** 140 * Usage: 141 * Test <inflate monitor> 142 */ 143 public static void main(String args[]) throws Throwable { 144 Asserts.assertGTE(args.length, 1, "One argument required."); 145 Test test = new Test(); 146 boolean shouldBeInflated = Boolean.valueOf(args[0]); 147 if (shouldBeInflated) { 148 AbortProvoker.inflateMonitor(test.monitor); 149 } 150 for (long i = 0L; i < Test.TOTAL_ITERATIONS; i++) { 151 AbortProvoker.verifyMonitorState(test.monitor, 152 shouldBeInflated); 153 // Force abort on first iteration to avoid rare case when 154 // there were no aborts and locks count was not incremented 155 // with RTMTotalCountIncrRate > 1 (in such case JVM won't 156 // print JVM locking statistics). 157 test.lock(i == 0); 158 } 159 } 160 } 161 162 public static void main(String args[]) throws Throwable { 163 new TestRTMTotalCountIncrRate().test(); 164 } 165 }