1 /* 2 * Copyright (c) 2017, 2019, Red Hat, Inc. 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 TestLoopMiningArguments 27 * @summary Test that loop mining arguments are sane 28 * @requires vm.gc.Shenandoah & !vm.graal.enabled 29 * @requires vm.flavor == "server" 30 * @library /test/lib 31 * @run driver TestLoopMiningArguments 32 */ 33 34 import java.util.*; 35 36 import jdk.test.lib.Asserts; 37 import jdk.test.lib.process.ProcessTools; 38 import jdk.test.lib.process.OutputAnalyzer; 39 40 public class TestLoopMiningArguments { 41 42 public static void testWith(String msg, boolean cls, int iters, String... args) throws Exception { 43 String[] cmds = Arrays.copyOf(args, args.length + 3); 44 cmds[args.length] = "-Xmx128m"; 45 cmds[args.length + 1] = "-XX:+PrintFlagsFinal"; 46 cmds[args.length + 2] = "-version"; 47 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(cmds); 48 OutputAnalyzer output = new OutputAnalyzer(pb.start()); 49 output.shouldHaveExitValue(0); 50 output.shouldContain("UseCountedLoopSafepoints"); 51 output.shouldContain("LoopStripMiningIter"); 52 53 Asserts.assertEQ(output.firstMatch("(.+?) UseCountedLoopSafepoints.+?= (.+?) (.+?)", 2), Boolean.toString(cls), msg + ", but got wrong CLS"); 54 Asserts.assertEQ(output.firstMatch("(.+?) LoopStripMiningIter.+?= (.+?) (.+?)", 2), String.valueOf(iters), msg + ", but got wrong LSM"); 55 } 56 57 public static void main(String[] args) throws Exception { 58 testWith("Shenandoah should have CLS and LSM enabled", 59 true, 1000, 60 "-XX:+UnlockExperimentalVMOptions", 61 "-XX:+UseShenandoahGC" 62 ); 63 64 testWith("Shenandoah with +CLS should set LSM = 1", 65 true, 1, 66 "-XX:+UnlockExperimentalVMOptions", 67 "-XX:+UseShenandoahGC", 68 "-XX:+UseCountedLoopSafepoints" 69 ); 70 71 testWith("Shenandoah GC with +CLS should not override LSM>1", 72 true, 10, 73 "-XX:+UnlockExperimentalVMOptions", 74 "-XX:+UseShenandoahGC", 75 "-XX:LoopStripMiningIter=10", 76 "-XX:+UseCountedLoopSafepoints" 77 ); 78 79 testWith("Shenandoah GC with +CLS should not override LSM=1", 80 true, 1, 81 "-XX:+UnlockExperimentalVMOptions", 82 "-XX:+UseShenandoahGC", 83 "-XX:LoopStripMiningIter=1", 84 "-XX:+UseCountedLoopSafepoints" 85 ); 86 87 testWith("Shenandoah GC with +CLS should override LSM=0 to 1", 88 true, 1, 89 "-XX:+UnlockExperimentalVMOptions", 90 "-XX:+UseShenandoahGC", 91 "-XX:LoopStripMiningIter=0", 92 "-XX:+UseCountedLoopSafepoints" 93 ); 94 95 testWith("Shenandoah GC with -CLS should set LSM = 0", 96 false, 0, 97 "-XX:+UnlockExperimentalVMOptions", 98 "-XX:+UseShenandoahGC", 99 "-XX:-UseCountedLoopSafepoints" 100 ); 101 102 testWith("Shenandoah GC with -CLS should override LSM to 0", 103 false, 0, 104 "-XX:+UnlockExperimentalVMOptions", 105 "-XX:+UseShenandoahGC", 106 "-XX:LoopStripMiningIter=10", 107 "-XX:-UseCountedLoopSafepoints" 108 ); 109 } 110 111 }