1 /* 2 * Copyright (c) 2014, 2019, 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 * @test 26 * @bug 8031320 27 * @summary Verify that RTMTotalCountIncrRate option affects 28 * RTM locking statistics. 29 * @library /test/lib / 30 * @modules java.base/jdk.internal.misc 31 * java.management 32 * @requires vm.rtm.cpu & vm.rtm.compiler 33 * @build sun.hotspot.WhiteBox 34 * @run driver ClassFileInstaller sun.hotspot.WhiteBox 35 * sun.hotspot.WhiteBox$WhiteBoxPermission 36 * @run main/othervm/native -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions 37 * -XX:+WhiteBoxAPI 38 * compiler.rtm.locking.TestRTMTotalCountIncrRate 39 */ 40 41 package compiler.rtm.locking; 42 43 import compiler.testlibrary.rtm.AbortProvoker; 44 import compiler.testlibrary.rtm.XAbortProvoker; 45 import compiler.testlibrary.rtm.CompilableTest; 46 import compiler.testlibrary.rtm.RTMLockingStatistics; 47 import compiler.testlibrary.rtm.RTMTestBase; 48 import jdk.test.lib.Asserts; 49 import jdk.test.lib.process.OutputAnalyzer; 50 import jdk.test.lib.cli.CommandLineOptionTest; 51 52 import java.util.List; 53 54 /** 55 * Test verifies that with RTMTotalCountIncrRate=1 RTM locking statistics 56 * contains precise information abort attempted locks and that with other values 57 * statistics contains information abort non-zero locking attempts. 58 * Since assert done for RTMTotalCountIncrRate=1 is pretty strict, test uses 59 * -XX:RTMRetryCount=0 to avoid issue with retriable aborts. For more details on 60 * that issue see {@link TestUseRTMAfterLockInflation}. 61 */ 62 public class TestRTMTotalCountIncrRate { 63 protected void runTestCases() throws Throwable { 64 verifyLocksCount(1, false); 65 verifyLocksCount(64, false); 66 verifyLocksCount(128, false); 67 verifyLocksCount(1, true); 68 verifyLocksCount(64, true); 69 verifyLocksCount(128, true); 70 } 71 72 private void verifyLocksCount(int incrRate, boolean useStackLock) 73 throws Throwable{ 74 CompilableTest test = new Test(); 75 76 OutputAnalyzer outputAnalyzer = RTMTestBase.executeRTMTest( 77 test, 78 CommandLineOptionTest.prepareBooleanFlag("UseRTMForStackLocks", 79 useStackLock), 80 CommandLineOptionTest.prepareNumericFlag( 81 "RTMTotalCountIncrRate", incrRate), 82 "-XX:RTMRetryCount=0", 83 "-XX:+PrintPreciseRTMLockingStatistics", 84 Test.class.getName(), 85 Boolean.toString(!useStackLock) 86 ); 87 88 outputAnalyzer.shouldHaveExitValue(0); 89 90 List<RTMLockingStatistics> statistics = RTMLockingStatistics.fromString( 91 test.getMethodWithLockName(), outputAnalyzer.getOutput()); 92 93 Asserts.assertEQ(statistics.size(), 1, "VM output should contain " 94 + "exactly one RTM locking statistics entry for method " 95 + test.getMethodWithLockName()); 96 97 RTMLockingStatistics lock = statistics.get(0); 98 if (incrRate == 1) { 99 Asserts.assertEQ(lock.getTotalLocks(), Test.TOTAL_ITERATIONS, 100 "Total locks should be exactly the same as amount of " 101 + "iterations."); 102 } 103 } 104 105 public static class Test implements CompilableTest { 106 private static final long TOTAL_ITERATIONS = 10000L; 107 private final XAbortProvoker xabort = new XAbortProvoker(); 108 private final Object monitor = new Object(); 109 // Following field have to be static in order to avoid escape analysis. 110 @SuppressWarnings("UnsuedDeclaration") 111 private static int field = 0; 112 113 @Override 114 public String getMethodWithLockName() { 115 return this.getClass().getName() + "::lock"; 116 } 117 118 @Override 119 public String[] getMethodsToCompileNames() { 120 return new String[] { getMethodWithLockName(), "*.doAbort" }; 121 } 122 123 public void lock(boolean forceAbort) { 124 synchronized(monitor) { 125 if (forceAbort) { 126 // We're calling native method in order to force 127 // abort. It's done by explicit xabort call emitted 128 // in SharedRuntime::generate_native_wrapper. 129 // If an actual JNI call will be replaced by 130 // intrinsic - we'll be in trouble, since xabort 131 // will be no longer called and test may fail. 132 xabort.doAbort(); 133 } 134 Test.field++; 135 } 136 } 137 138 /** 139 * Usage: 140 * Test <inflate monitor> 141 */ 142 public static void main(String args[]) throws Throwable { 143 Asserts.assertGTE(args.length, 1, "One argument required."); 144 Test test = new Test(); 145 boolean shouldBeInflated = Boolean.valueOf(args[0]); 146 if (shouldBeInflated) { 147 AbortProvoker.inflateMonitor(test.monitor); 148 } 149 for (long i = 0L; i < Test.TOTAL_ITERATIONS; i++) { 150 AbortProvoker.verifyMonitorState(test.monitor, 151 shouldBeInflated); 152 // Force abort on first iteration to avoid rare case when 153 // there were no aborts and locks count was not incremented 154 // with RTMTotalCountIncrRate > 1 (in such case JVM won't 155 // print JVM locking statistics). 156 test.lock(i == 0); 157 } 158 } 159 } 160 161 public static void main(String args[]) throws Throwable { 162 new TestRTMTotalCountIncrRate().runTestCases(); 163 } 164 }