/*
 * Copyright (c) 2014, 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.
 */

/*
 * @test
 * @bug 8034775
 * @summary Ensures correct minimal number of compiler threads (provided by -XX:CICompilerCount=)
 * @library /testlibrary
 * @build com.oracle.java.testlibrary.*
 * @run main/othervm NumCompilerThreadsCheck
 */
import com.oracle.java.testlibrary.*;

public class NumCompilerThreadsCheck {

  public static void main(String[] args) throws Exception {
    ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-XX:CICompilerCount=-1");
    OutputAnalyzer out = new OutputAnalyzer(pb.start());

    String expectedOutput = "CICompilerCount of -1 is invalid";
    out.shouldContain(expectedOutput);

    if (isZeroVm()) {
      String expectedLowWaterMarkText = "must be at least 0";
      out.shouldContain(expectedLowWaterMarkText);
    }
  }

  private static boolean isZeroVm() {
    String vmName = System.getProperty("java.vm.name");
    if (vmName == null) {
      throw new RuntimeException("No VM name");
    }
    if (vmName.toLowerCase().contains("zero")) {
      return true;
    }
    return false;
  }
}