TestWrongBarrierEnable.java

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/* @test TestWrongBarrierEnable
 * @summary Test that disabling wrong barriers fails early
 * @requires vm.gc.Shenandoah
 * @library /test/lib
 * @run driver TestWrongBarrierEnable
 */

import java.util.*;

import jdk.test.lib.process.ProcessTools;
import jdk.test.lib.process.OutputAnalyzer;

public class TestWrongBarrierEnable {

    public static void main(String[] args) throws Exception {
        String[] concurrent = {
                "ShenandoahIUBarrier",
        };
        String[] iu = {
                "ShenandoahSATBBarrier",
        };

        shouldFailAll("-XX:ShenandoahGCHeuristics=adaptive",   concurrent);
        shouldFailAll("-XX:ShenandoahGCHeuristics=static",     concurrent);
        shouldFailAll("-XX:ShenandoahGCHeuristics=compact",    concurrent);
        shouldFailAll("-XX:ShenandoahGCHeuristics=aggressive", concurrent);
        shouldFailAll("-XX:ShenandoahGCMode=iu",               iu);
        shouldPassAll("-XX:ShenandoahGCMode=passive",          concurrent);
        shouldPassAll("-XX:ShenandoahGCMode=passive",          iu);
    }

    private static void shouldFailAll(String h, String[] barriers) throws Exception {
        for (String b : barriers) {
            ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
                    "-Xmx128m",
                    "-XX:+UnlockDiagnosticVMOptions",
                    "-XX:+UnlockExperimentalVMOptions",
                    "-XX:+UseShenandoahGC",
                    h,
                    "-XX:+" + b,
                    "-version"
            );
            OutputAnalyzer output = new OutputAnalyzer(pb.start());
            output.shouldNotHaveExitValue(0);
            output.shouldContain("GC mode needs ");
            output.shouldContain("to work correctly");
        }
    }

    private static void shouldPassAll(String h, String[] barriers) throws Exception {
        for (String b : barriers) {
            ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
                    "-Xmx128m",
                    "-XX:+UnlockDiagnosticVMOptions",
                    "-XX:+UnlockExperimentalVMOptions",
                    "-XX:+UseShenandoahGC",
                    h,
                    "-XX:+" + b,
                    "-version"
            );
            OutputAnalyzer output = new OutputAnalyzer(pb.start());
            output.shouldHaveExitValue(0);
        }
    }

}