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 on high abort ratio method will be recompiled 29 * without rtm locking. 30 * @library /testlibrary /../../test/lib /compiler/testlibrary 31 * @modules java.base/sun.misc 32 * java.management 33 * @build TestRTMDeoptOnHighAbortRatio 34 * @run main ClassFileInstaller sun.hotspot.WhiteBox 35 * sun.hotspot.WhiteBox$WhiteBoxPermission 36 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions 37 * -XX:+WhiteBoxAPI TestRTMDeoptOnHighAbortRatio 38 */ 39 40 import java.util.List; 41 import jdk.test.lib.*; 42 import jdk.test.lib.cli.CommandLineOptionTest; 43 import jdk.test.lib.cli.predicate.AndPredicate; 44 import rtm.*; 45 import rtm.predicate.SupportedCPU; 46 import rtm.predicate.SupportedVM; 47 48 /** 49 * Test verifies that on high abort ratio method wil be deoptimized with 50 * <i>rtm_state_change</i> reason and after that RTM-based lock elision will not 51 * be used for that method. 52 * This test make asserts on total locks count done by compiled method, 53 * so in order to avoid issue with retriable locks -XX:RTMRetryCount=0 is used. 54 * For more details on that issue see {@link TestUseRTMAfterLockInflation}. 55 */ 56 public class TestRTMDeoptOnHighAbortRatio extends CommandLineOptionTest { 57 private static final long ABORT_THRESHOLD 58 = AbortProvoker.DEFAULT_ITERATIONS / 2L; 59 60 private TestRTMDeoptOnHighAbortRatio() { 61 super(new AndPredicate(new SupportedCPU(), new SupportedVM())); 62 } 63 64 @Override 65 protected void runTestCases() throws Throwable { 66 verifyDeopt(false); 67 verifyDeopt(true); 68 } 69 70 private void verifyDeopt(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 75 OutputAnalyzer outputAnalyzer = RTMTestBase.executeRTMTest( 76 logFileName, 77 provoker, 78 "-XX:+UseRTMDeopt", 79 CommandLineOptionTest.prepareBooleanFlag("UseRTMForStackLocks", 80 useStackLock), 81 "-XX:RTMRetryCount=0", 82 CommandLineOptionTest.prepareNumericFlag("RTMAbortThreshold", 83 TestRTMDeoptOnHighAbortRatio.ABORT_THRESHOLD), 84 "-XX:RTMAbortRatio=100", 85 "-XX:CompileThreshold=1", 86 "-XX:RTMTotalCountIncrRate=1", 87 "-XX:+PrintPreciseRTMLockingStatistics", 88 AbortProvoker.class.getName(), 89 AbortType.XABORT.toString(), 90 Boolean.toString(!useStackLock) 91 ); 92 93 outputAnalyzer.shouldHaveExitValue(0); 94 95 int firedTraps = RTMTestBase.firedRTMStateChangeTraps(logFileName); 96 97 Asserts.assertEQ(firedTraps, 1, "Expected to get only one " 98 + "deoptimization due to rtm state change"); 99 100 List<RTMLockingStatistics> statistics = RTMLockingStatistics.fromString( 101 provoker.getMethodWithLockName(), outputAnalyzer.getOutput()); 102 103 Asserts.assertEQ(statistics.size(), 1, "VM output should contain " 104 + "exactly one RTM locking statistics entry for method " 105 + provoker.getMethodWithLockName()); 106 107 Asserts.assertEQ(statistics.get(0).getTotalLocks(), 108 TestRTMDeoptOnHighAbortRatio.ABORT_THRESHOLD, 109 "After AbortThreshold was reached, method should be" 110 + " recompiled without rtm lock eliding."); 111 } 112 113 public static void main(String args[]) throws Throwable { 114 new TestRTMDeoptOnHighAbortRatio().test(); 115 } 116 } 117