TestLargePageSizeInBytes.java

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/* @test TestLargePageSizeInBytes
 * @summary Tests that the flag -XX:LargePageSizeInBytes does not cause warnings on Solaris
 * @bug 8049536
 * @library /test/lib
 * @modules java.base/jdk.internal.misc
 *          java.management
 * @run driver TestLargePageSizeInBytes
 */

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

public class TestLargePageSizeInBytes {
    private static long M = 1024L * 1024L;
    private static long G = 1024L * M;

    public static void main(String[] args) throws Exception {
        if (!Platform.isSolaris()) {
            // We only use the syscall mencntl on Solaris
            return;
        }

        testLargePageSizeInBytes(4 * M);
        testLargePageSizeInBytes(256 * M);
        testLargePageSizeInBytes(512 * M);
        testLargePageSizeInBytes(2 * G);
    }

    private static void testLargePageSizeInBytes(long size) throws Exception {
        ProcessBuilder pb =
            ProcessTools.createJavaProcessBuilder("-XX:+UseLargePages",
                                                  "-XX:LargePageSizeInBytes=" + size,
                                                  "-version");

        OutputAnalyzer out = new OutputAnalyzer(pb.start());
        out.shouldNotContain("Attempt to use MPSS failed.");
        out.shouldHaveExitValue(0);
    }
}