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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * 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
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/* @test TestWrongBarrierDisable
 * @summary Test that disabling wrong barriers fails early
 * @key gc
 * @requires vm.gc.Shenandoah & !vm.graal.enabled
 * @library /test/lib
 * @run main/othervm TestWrongBarrierDisable
 */

import java.util.*;

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

public class TestWrongBarrierDisable {

    public static void main(String[] args) throws Exception {
        String[] concurrent = {
                "ShenandoahLoadRefBarrier",
                "ShenandoahCASBarrier",
                "ShenandoahCloneBarrier",
        };

        String[] traversal = {
                "ShenandoahLoadRefBarrier",
                "ShenandoahCASBarrier",
                "ShenandoahCloneBarrier",
        };

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

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

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

}