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 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 testWith("Shenandoah should have CLS and LSM enabled", 57 true, 1000, 58 "-XX:+UnlockExperimentalVMOptions", 59 "-XX:+UseShenandoahGC" 60 ); 61 62 testWith("Shenandoah with +CLS should set LSM = 1", 63 true, 1, 64 "-XX:+UnlockExperimentalVMOptions", 65 "-XX:+UseShenandoahGC", 66 "-XX:+UseCountedLoopSafepoints" 67 ); 68 69 testWith("Shenandoah GC with +CLS should not override LSM>1", 70 true, 10, 71 "-XX:+UnlockExperimentalVMOptions", 72 "-XX:+UseShenandoahGC", 73 "-XX:LoopStripMiningIter=10", 74 "-XX:+UseCountedLoopSafepoints" 75 ); 76 77 testWith("Shenandoah GC with +CLS should not override LSM=1", 78 true, 1, 79 "-XX:+UnlockExperimentalVMOptions", 80 "-XX:+UseShenandoahGC", 81 "-XX:LoopStripMiningIter=1", 82 "-XX:+UseCountedLoopSafepoints" 83 ); 84 85 testWith("Shenandoah GC with +CLS should override LSM=0 to 1", 86 true, 1, 87 "-XX:+UnlockExperimentalVMOptions", 88 "-XX:+UseShenandoahGC", 89 "-XX:LoopStripMiningIter=0", 90 "-XX:+UseCountedLoopSafepoints" 91 ); 92 93 testWith("Shenandoah GC with -CLS should set LSM = 0", 94 false, 0, 95 "-XX:+UnlockExperimentalVMOptions", 96 "-XX:+UseShenandoahGC", 97 "-XX:-UseCountedLoopSafepoints" 98 ); 99 100 testWith("Shenandoah GC with -CLS should override LSM to 0", 101 false, 0, 102 "-XX:+UnlockExperimentalVMOptions", 103 "-XX:+UseShenandoahGC", 104 "-XX:LoopStripMiningIter=10", 105 "-XX:-UseCountedLoopSafepoints" 106 ); 107 } 108 109 }