1 /* 2 * Copyright (c) 2017, 2018, 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 /* @test TestSelectiveBarrierFlags 26 * @summary Test selective barrier enabling works, by aggressively compiling HelloWorld with combinations 27 * of barrier flags 28 * @requires vm.gc.Shenandoah & !vm.graal.enabled 29 * @library /test/lib 30 * @run driver TestSelectiveBarrierFlags -Xint 31 * @run driver TestSelectiveBarrierFlags -Xbatch -XX:CompileThreshold=100 -XX:TieredStopAtLevel=1 32 * @run driver TestSelectiveBarrierFlags -Xbatch -XX:CompileThreshold=100 -XX:-TieredCompilation -XX:+IgnoreUnrecognizedVMOptions -XX:+ShenandoahVerifyOptoBarriers 33 */ 34 35 import java.util.*; 36 import java.util.concurrent.*; 37 38 import jdk.test.lib.process.ProcessTools; 39 import jdk.test.lib.process.OutputAnalyzer; 40 41 public class TestSelectiveBarrierFlags { 42 43 public static void main(String[] args) throws Exception { 44 String[][] opts = { 45 new String[] { "ShenandoahLoadRefBarrier" }, 46 new String[] { "ShenandoahSATBBarrier", "ShenandoahStoreValEnqueueBarrier" }, 47 new String[] { "ShenandoahCASBarrier" }, 48 new String[] { "ShenandoahCloneBarrier" }, 49 }; 50 51 int size = 1; 52 for (String[] l : opts) { 53 size *= (l.length + 1); 54 } 55 56 ExecutorService pool = Executors.newFixedThreadPool(Runtime.getRuntime().availableProcessors()); 57 58 for (int c = 0; c < size; c++) { 59 int t = c; 60 61 List<String> conf = new ArrayList<>(); 62 conf.addAll(Arrays.asList(args)); 63 conf.add("-Xmx128m"); 64 conf.add("-XX:+UnlockDiagnosticVMOptions"); 65 conf.add("-XX:+UnlockExperimentalVMOptions"); 66 conf.add("-XX:+UseShenandoahGC"); 67 conf.add("-XX:ShenandoahGCMode=passive"); 68 69 StringBuilder sb = new StringBuilder(); 70 for (String[] l : opts) { 71 // Make a choice which flag to select from the group. 72 // Zero means no flag is selected from the group. 73 int choice = t % (l.length + 1); 74 for (int e = 0; e < l.length; e++) { 75 conf.add("-XX:" + ((choice == (e + 1)) ? "+" : "-") + l[e]); 76 } 77 t = t / (l.length + 1); 78 } 79 80 conf.add("TestSelectiveBarrierFlags$Test"); 81 82 pool.submit(() -> { 83 try { 84 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(conf.toArray(new String[0])); 85 OutputAnalyzer output = new OutputAnalyzer(pb.start()); 86 output.shouldHaveExitValue(0); 87 } catch (Exception e) { 88 e.printStackTrace(); 89 System.exit(1); 90 } 91 }); 92 } 93 94 pool.shutdown(); 95 pool.awaitTermination(1, TimeUnit.HOURS); 96 } 97 98 public static class Test { 99 public static void main(String... args) { 100 System.out.println("HelloWorld"); 101 } 102 } 103 104 }