1 /* 2 * Copyright (c) 2014, 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 UseRTMLockEliding option could be applied to 29 * specified method and that such method will not be deoptimized 30 * on high abort ratio. 31 * @library /testlibrary /../../test/lib /compiler/testlibrary 32 * @build TestUseRTMLockElidingOption 33 * @run main ClassFileInstaller sun.hotspot.WhiteBox 34 * sun.hotspot.WhiteBox$WhiteBoxPermission 35 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions 36 * -XX:+WhiteBoxAPI TestUseRTMLockElidingOption 37 */ 38 39 import java.util.List; 40 import com.oracle.java.testlibrary.*; 41 import com.oracle.java.testlibrary.cli.CommandLineOptionTest; 42 import com.oracle.java.testlibrary.cli.predicate.AndPredicate; 43 import rtm.*; 44 import rtm.predicate.SupportedCPU; 45 import rtm.predicate.SupportedVM; 46 47 /** 48 * Test verifies that method tagged with option <i>UseRTMLockElidingOption</i> 49 * will use RTM-based lock elision, but will be never deoptimized with 50 * <i>rtm_state_change reason</i>. 51 * Test invokes compiled method and checks that no deoptimization with 52 * <i>rtm_state_change</i> reason had happened and that that VM output 53 * contains RTM locking statistics for compiled method and that total locks 54 * count equals to method's invocations. 55 * Since last assert is pretty strict, test uses -XX:RTMRetryCount=0 in order 56 * to avoid issue with retriable aborts described in 57 * {@link TestUseRTMAfterLockInflation}. 58 */ 59 public class TestUseRTMLockElidingOption extends CommandLineOptionTest { 60 private TestUseRTMLockElidingOption() { 61 super(new AndPredicate(new SupportedCPU(), new SupportedVM())); 62 } 63 64 @Override 65 public void runTestCases() throws Throwable { 66 verifyOption(false); 67 verifyOption(true); 68 } 69 70 public void verifyOption(boolean useStackLock) throws Throwable { 71 AbortProvoker provoker = AbortType.XABORT.provoker(); 72 String logFileName = String.format("rtm_deopt_%s_stack_lock.xml", 73 (useStackLock ? "use" : "no")); 74 String methodOption = String.format("-XX:CompileCommand=option," + 75 "%s,UseRTMLockEliding", provoker.getMethodWithLockName()); 76 77 OutputAnalyzer outputAnalyzer = RTMTestBase.executeRTMTest( 78 logFileName, 79 provoker, 80 CommandLineOptionTest.prepareBooleanFlag("UseRTMForStackLocks", 81 useStackLock), 82 methodOption, 83 "-XX:RTMTotalCountIncrRate=1", 84 "-XX:RTMRetryCount=0", 85 "-XX:+UseRTMDeopt", 86 "-XX:+PrintPreciseRTMLockingStatistics", 87 provoker.getClass().getName(), 88 AbortType.XABORT.toString(), 89 Boolean.toString(!useStackLock) 90 ); 91 92 outputAnalyzer.shouldHaveExitValue(0); 93 94 int firedTraps = RTMTestBase.firedRTMStateChangeTraps(logFileName); 95 96 Asserts.assertEQ(firedTraps, 0, 97 "Method deoptimization with rtm_state_change is unexpected"); 98 99 List<RTMLockingStatistics> statistics = RTMLockingStatistics.fromString( 100 provoker.getMethodWithLockName(), outputAnalyzer.getOutput()); 101 102 Asserts.assertEQ(statistics.size(), 1, 103 "VM output should contain exactly one RTM locking " 104 + "statistics entry for method " 105 + provoker.getMethodWithLockName()); 106 107 RTMLockingStatistics lock = statistics.get(0); 108 109 Asserts.assertEQ(lock.getTotalLocks(), AbortProvoker.DEFAULT_ITERATIONS, 110 "Expected to get total locks count equal to total amount of " 111 + "lock attempts."); 112 } 113 114 public static void main(String args[]) throws Throwable { 115 new TestUseRTMLockElidingOption().test(); 116 } 117 }