/*

 * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * 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.

 */

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(false,

                                                  "-Xlog:os=trace",

                                                  "-XX:+UnlockDiagnosticVMOptions",

                                                  "-XX:+UseCpuAllocPath",

                                                  "-version");

        OutputAnalyzer output = new OutputAnalyzer(pb.start());

        output.shouldContain(SUCCESS_STRING);

    }

}