| /* |
| * Copyright (c) 2017, 2018, Red Hat, Inc. All rights reserved. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| * |
| */ |
| |
| /* @test TestSelectiveBarrierFlags |
| * @summary Test selective barrier enabling works, by aggressively compiling HelloWorld with combinations |
| * of barrier flags |
| * @key gc |
| * @requires vm.gc.Shenandoah & !vm.graal.enabled |
| * @library /test/lib |
| * @run main/othervm TestSelectiveBarrierFlags -Xint |
| * @run main/othervm TestSelectiveBarrierFlags -Xbatch -XX:CompileThreshold=100 -XX:TieredStopAtLevel=1 |
| * @run main/othervm TestSelectiveBarrierFlags -Xbatch -XX:CompileThreshold=100 -XX:-TieredCompilation -XX:+IgnoreUnrecognizedVMOptions -XX:+ShenandoahVerifyOptoBarriers |
| */ |
| |
| import java.util.*; |
| import java.util.concurrent.*; |
| |
| import jdk.test.lib.process.ProcessTools; |
| import jdk.test.lib.process.OutputAnalyzer; |
| |
| public class TestSelectiveBarrierFlags { |
| |
| public static void main(String[] args) throws Exception { |
| String[][] opts = { |
| new String[] { "ShenandoahLoadRefBarrier" }, |
| new String[] { "ShenandoahSATBBarrier", "ShenandoahIUBarrier" }, |
| new String[] { "ShenandoahCASBarrier" }, |
| new String[] { "ShenandoahCloneBarrier" }, |
| }; |
| |
| int size = 1; |
| for (String[] l : opts) { |
| size *= (l.length + 1); |
| } |
| |
| ExecutorService pool = Executors.newFixedThreadPool(Runtime.getRuntime().availableProcessors()); |
| |
| for (int c = 0; c < size; c++) { |
| int t = c; |
| |
| List<String> conf = new ArrayList<>(); |
| conf.addAll(Arrays.asList(args)); |
| conf.add("-Xmx128m"); |
| conf.add("-XX:+UnlockDiagnosticVMOptions"); |
| conf.add("-XX:+UnlockExperimentalVMOptions"); |
| conf.add("-XX:+UseShenandoahGC"); |
| conf.add("-XX:ShenandoahGCMode=passive"); |
| |
| StringBuilder sb = new StringBuilder(); |
| for (String[] l : opts) { |
| // Make a choice which flag to select from the group. |
| // Zero means no flag is selected from the group. |
| int choice = t % (l.length + 1); |
| for (int e = 0; e < l.length; e++) { |
| conf.add("-XX:" + ((choice == (e + 1)) ? "+" : "-") + l[e]); |
| } |
| t = t / (l.length + 1); |
| } |
| |
| conf.add("TestSelectiveBarrierFlags$Test"); |
| |
| pool.submit(() -> { |
| try { |
| ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(conf.toArray(new String[0])); |
| OutputAnalyzer output = new OutputAnalyzer(pb.start()); |
| output.shouldHaveExitValue(0); |
| } catch (Exception e) { |
| e.printStackTrace(); |
| System.exit(1); |
| } |
| }); |
| } |
| |
| pool.shutdown(); |
| pool.awaitTermination(1, TimeUnit.HOURS); |
| } |
| |
| public static class Test { |
| public static void main(String... args) { |
| System.out.println("HelloWorld"); |
| } |
| } |
| |
| } |