1 /* 2 * Copyright (c) 2014, 2016, 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 UseRTMLockEliding option could be applied to 28 * specified method and that such method will not be deoptimized 29 * on high abort ratio. 30 * @library /test/lib / 31 * @modules java.base/jdk.internal.misc 32 * java.management 33 * @requires vm.rtm.cpu & vm.rtm.compiler 34 * @build sun.hotspot.WhiteBox 35 * @run driver ClassFileInstaller sun.hotspot.WhiteBox 36 * sun.hotspot.WhiteBox$WhiteBoxPermission 37 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions 38 * -XX:+WhiteBoxAPI 39 * compiler.rtm.method_options.TestUseRTMLockElidingOption 40 */ 41 42 package compiler.rtm.method_options; 43 44 import compiler.testlibrary.rtm.AbortProvoker; 45 import compiler.testlibrary.rtm.AbortType; 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 method tagged with option <i>UseRTMLockElidingOption</i> 56 * will use RTM-based lock elision, but will be never deoptimized with 57 * <i>rtm_state_change reason</i>. 58 * Test invokes compiled method and checks that no deoptimization with 59 * <i>rtm_state_change</i> reason had happened and that that VM output 60 * contains RTM locking statistics for compiled method and that total locks 61 * count equals to method's invocations. 62 * Since last assert is pretty strict, test uses -XX:RTMRetryCount=0 in order 63 * to avoid issue with retriable aborts described in 64 * {@link TestUseRTMAfterLockInflation}. 65 */ 66 public class TestUseRTMLockElidingOption { 67 68 public void runTestCases() throws Throwable { 69 verifyOption(false); 70 verifyOption(true); 71 } 72 73 public void verifyOption(boolean useStackLock) throws Throwable { 74 AbortProvoker provoker = AbortType.XABORT.provoker(); 75 String logFileName = String.format("rtm_deopt_%s_stack_lock.xml", 76 (useStackLock ? "use" : "no")); 77 String methodOption = String.format("-XX:CompileCommand=option," + 78 "%s,UseRTMLockEliding", provoker.getMethodWithLockName()); 79 80 OutputAnalyzer outputAnalyzer = RTMTestBase.executeRTMTest( 81 logFileName, 82 provoker, 83 CommandLineOptionTest.prepareBooleanFlag("UseRTMForStackLocks", 84 useStackLock), 85 methodOption, 86 "-XX:RTMTotalCountIncrRate=1", 87 "-XX:RTMRetryCount=0", 88 "-XX:+UseRTMDeopt", 89 "-XX:+PrintPreciseRTMLockingStatistics", 90 provoker.getClass().getName(), 91 AbortType.XABORT.toString(), 92 Boolean.toString(!useStackLock) 93 ); 94 95 outputAnalyzer.shouldHaveExitValue(0); 96 97 int firedTraps = RTMTestBase.firedRTMStateChangeTraps(logFileName); 98 99 Asserts.assertEQ(firedTraps, 0, 100 "Method deoptimization with rtm_state_change is unexpected"); 101 102 List<RTMLockingStatistics> statistics = RTMLockingStatistics.fromString( 103 provoker.getMethodWithLockName(), outputAnalyzer.getOutput()); 104 105 Asserts.assertEQ(statistics.size(), 1, 106 "VM output should contain exactly one RTM locking " 107 + "statistics entry for method " 108 + provoker.getMethodWithLockName()); 109 110 RTMLockingStatistics lock = statistics.get(0); 111 112 Asserts.assertEQ(lock.getTotalLocks(), AbortProvoker.DEFAULT_ITERATIONS, 113 "Expected to get total locks count equal to total amount of " 114 + "lock attempts."); 115 } 116 117 public static void main(String args[]) throws Throwable { 118 new TestUseRTMLockElidingOption().runTestCases(); 119 } 120 }