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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * version 2 for more details (a copy is included in the LICENSE file that
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 *
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 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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import jdk.test.lib.process.ProcessTools;
import jdk.test.lib.process.OutputAnalyzer;

/**
 * @test
 * @summary If #processors > 1024 os_linux.cpp uses special coding.
 *   Excercise this by forcing usage of this coding. If this fails, this
 *   VM was either compiled on a platform which does not define CPU_ALLOC,
 *   or it is executed on a platform that does not support it.
 * @requires os.family == "linux"
 * @modules java.base/jdk.internal.misc
 * @library /test/lib
 * @run driver TestUseCpuAllocPath
 */
public class TestUseCpuAllocPath {

    static final String SUCCESS_STRING = "active_processor_count: using dynamic path (forced)";

    public static void main(String[] args) throws Exception {
        ProcessBuilder pb =
            ProcessTools.createJavaProcessBuilder("-Xlog:os=trace",
                                                  "-XX:+UnlockDiagnosticVMOptions",
                                                  "-XX:+UseCpuAllocPath",
                                                  "-version");

        OutputAnalyzer output = new OutputAnalyzer(pb.start());
        output.shouldContain(SUCCESS_STRING);
    }
}
