1 /* 2 * Copyright (c) 2017, 2019, Red Hat, Inc. All rights reserved. 3 * 4 * This code is free software; you can redistribute it and/or modify it 5 * under the terms of the GNU General Public License version 2 only, as 6 * published by the Free Software Foundation. 7 * 8 * This code is distributed in the hope that it will be useful, but WITHOUT 9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 11 * version 2 for more details (a copy is included in the LICENSE file that 12 * accompanied this code). 13 * 14 * You should have received a copy of the GNU General Public License version 15 * 2 along with this work; if not, write to the Free Software Foundation, 16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 17 * 18 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 19 * or visit www.oracle.com if you need additional information or have any 20 * questions. 21 * 22 */ 23 24 /* 25 * @test TestLoopMiningArguments 26 * @summary Test that loop mining arguments are sane 27 * @key gc 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 testWith(String msg, boolean cls, int iters, String... args)42 public static void testWith(String msg, boolean cls, int iters, String... args) throws Exception { 43 String[] cmds = Arrays.copyOf(args, args.length + 2); 44 cmds[args.length] = "-XX:+PrintFlagsFinal"; 45 cmds[args.length + 1] = "-version"; 46 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(cmds); 47 OutputAnalyzer output = new OutputAnalyzer(pb.start()); 48 output.shouldHaveExitValue(0); 49 output.shouldContain("UseCountedLoopSafepoints"); 50 output.shouldContain("LoopStripMiningIter"); 51 52 Asserts.assertEQ(output.firstMatch("(.+?) UseCountedLoopSafepoints.+?= (.+?) (.+?)", 2), Boolean.toString(cls), msg + ", but got wrong CLS"); 53 Asserts.assertEQ(output.firstMatch("(.+?) LoopStripMiningIter.+?= (.+?) (.+?)", 2), String.valueOf(iters), msg + ", but got wrong LSM"); 54 } 55 main(String[] args)56 public static void main(String[] args) throws Exception { 57 testWith("Shenandoah should have CLS and LSM enabled", 58 true, 1000, 59 "-XX:+UnlockExperimentalVMOptions", 60 "-XX:+UseShenandoahGC" 61 ); 62 63 testWith("Shenandoah with +CLS should set LSM = 1", 64 true, 1, 65 "-XX:+UnlockExperimentalVMOptions", 66 "-XX:+UseShenandoahGC", 67 "-XX:+UseCountedLoopSafepoints" 68 ); 69 70 testWith("Shenandoah GC with +CLS should not override LSM>1", 71 true, 10, 72 "-XX:+UnlockExperimentalVMOptions", 73 "-XX:+UseShenandoahGC", 74 "-XX:LoopStripMiningIter=10", 75 "-XX:+UseCountedLoopSafepoints" 76 ); 77 78 testWith("Shenandoah GC with +CLS should not override LSM=1", 79 true, 1, 80 "-XX:+UnlockExperimentalVMOptions", 81 "-XX:+UseShenandoahGC", 82 "-XX:LoopStripMiningIter=1", 83 "-XX:+UseCountedLoopSafepoints" 84 ); 85 86 testWith("Shenandoah GC with +CLS should override LSM=0 to 1", 87 true, 1, 88 "-XX:+UnlockExperimentalVMOptions", 89 "-XX:+UseShenandoahGC", 90 "-XX:LoopStripMiningIter=0", 91 "-XX:+UseCountedLoopSafepoints" 92 ); 93 94 testWith("Shenandoah GC with -CLS should set LSM = 0", 95 false, 0, 96 "-XX:+UnlockExperimentalVMOptions", 97 "-XX:+UseShenandoahGC", 98 "-XX:-UseCountedLoopSafepoints" 99 ); 100 101 testWith("Shenandoah GC with -CLS should override LSM to 0", 102 false, 0, 103 "-XX:+UnlockExperimentalVMOptions", 104 "-XX:+UseShenandoahGC", 105 "-XX:LoopStripMiningIter=10", 106 "-XX:-UseCountedLoopSafepoints" 107 ); 108 } 109 110 } 111