1 /* 2 * Copyright (c) 2017, 2018, 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 29 * @library /test/lib 30 * @run driver TestLoopMiningArguments 31 */ 32 33 import java.util.*; 34 35 import jdk.test.lib.Asserts; 36 import jdk.test.lib.process.ProcessTools; 37 import jdk.test.lib.process.OutputAnalyzer; 38 39 public class TestLoopMiningArguments { 40 41 public static void testWith(String msg, boolean cls, int iters, String... args) throws Exception { 42 String[] cmds = Arrays.copyOf(args, args.length + 2); 43 cmds[args.length] = "-XX:+PrintFlagsFinal"; 44 cmds[args.length + 1] = "-version"; 45 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(cmds); 46 OutputAnalyzer output = new OutputAnalyzer(pb.start()); 47 output.shouldHaveExitValue(0); 48 output.shouldContain("UseCountedLoopSafepoints"); 49 output.shouldContain("LoopStripMiningIter"); 50 51 Asserts.assertEQ(output.firstMatch("(.+?) UseCountedLoopSafepoints.+?= (.+?) (.+?)", 2), Boolean.toString(cls), msg + ", but got wrong CLS"); 52 Asserts.assertEQ(output.firstMatch("(.+?) LoopStripMiningIter.+?= (.+?) (.+?)", 2), String.valueOf(iters), msg + ", but got wrong LSM"); 53 } 54 55 public static void main(String[] args) throws Exception { 56 testDefaultGC(); 57 testShenandoah(); 58 } 59 60 public static void testDefaultGC() throws Exception { 61 testWith("Default GC should have CLS enabled, LSM = 1000", 62 true, 1000); 63 64 testWith("Default GC with +CLS should set LSM = 1", 65 true, 1, 66 "-XX:+UseCountedLoopSafepoints" 67 ); 68 69 testWith("Default GC with +CLS should not override LSM>1", 70 true, 10, 71 "-XX:LoopStripMiningIter=10", 72 "-XX:+UseCountedLoopSafepoints" 73 ); 74 75 testWith("Default GC with +CLS should not override LSM=1", 76 true, 1, 77 "-XX:LoopStripMiningIter=1", 78 "-XX:+UseCountedLoopSafepoints" 79 ); 80 81 testWith("Default GC with +CLS should override LSM=0 to 1", 82 true, 1, 83 "-XX:LoopStripMiningIter=0", 84 "-XX:+UseCountedLoopSafepoints" 85 ); 86 87 testWith("Default GC with -CLS should set LSM = 0", 88 false, 0, 89 "-XX:-UseCountedLoopSafepoints" 90 ); 91 92 testWith("Default GC with -CLS should override LSM to 0", 93 false, 0, 94 "-XX:LoopStripMiningIter=10", 95 "-XX:-UseCountedLoopSafepoints" 96 ); 97 } 98 99 public static void testShenandoah() throws Exception { 100 testWith("Shenandoah should have CLS and LSM enabled", 101 true, 1000, 102 "-XX:+UnlockExperimentalVMOptions", 103 "-XX:+UseShenandoahGC" 104 ); 105 106 testWith("Shenandoah with +CLS should set LSM = 1", 107 true, 1, 108 "-XX:+UnlockExperimentalVMOptions", 109 "-XX:+UseShenandoahGC", 110 "-XX:+UseCountedLoopSafepoints" 111 ); 112 113 testWith("Shenandoah GC with +CLS should not override LSM>1", 114 true, 10, 115 "-XX:+UnlockExperimentalVMOptions", 116 "-XX:+UseShenandoahGC", 117 "-XX:LoopStripMiningIter=10", 118 "-XX:+UseCountedLoopSafepoints" 119 ); 120 121 testWith("Shenandoah GC with +CLS should not override LSM=1", 122 true, 1, 123 "-XX:+UnlockExperimentalVMOptions", 124 "-XX:+UseShenandoahGC", 125 "-XX:LoopStripMiningIter=1", 126 "-XX:+UseCountedLoopSafepoints" 127 ); 128 129 testWith("Shenandoah GC with +CLS should override LSM=0 to 1", 130 true, 1, 131 "-XX:+UnlockExperimentalVMOptions", 132 "-XX:+UseShenandoahGC", 133 "-XX:LoopStripMiningIter=0", 134 "-XX:+UseCountedLoopSafepoints" 135 ); 136 137 testWith("Shenandoah GC with -CLS should set LSM = 0", 138 false, 0, 139 "-XX:+UnlockExperimentalVMOptions", 140 "-XX:+UseShenandoahGC", 141 "-XX:-UseCountedLoopSafepoints" 142 ); 143 144 testWith("Shenandoah GC with -CLS should override LSM to 0", 145 false, 0, 146 "-XX:+UnlockExperimentalVMOptions", 147 "-XX:+UseShenandoahGC", 148 "-XX:LoopStripMiningIter=10", 149 "-XX:-UseCountedLoopSafepoints" 150 ); 151 } 152 153 }