src/Lucene.Net.TestFramework/Util/QuickPatchThreadsFilter.cs

#if TESTFRAMEWORK
// LUCENENET NOTE: This is incomplete

using System.Threading;

namespace Lucene.Net.Util
{

    using ThreadFilter = com.carrotsearch.randomizedtesting.ThreadFilter;

    /*
     * Licensed to the Apache Software Foundation (ASF) under one or more
     * contributor license agreements.  See the NOTICE file distributed with
     * this work for additional information regarding copyright ownership.
     * The ASF licenses this file to You under the Apache License, Version 2.0
     * (the "License"); you may not use this file except in compliance with
     * the License.  You may obtain a copy of the License at
     *
     *     http://www.apache.org/licenses/LICENSE-2.0
     *
     * Unless required by applicable law or agreed to in writing, software
     * distributed under the License is distributed on an "AS IS" BASIS,
     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     * See the License for the specific language governing permissions and
     * limitations under the License.
     */

    /// <summary>
    /// Last minute patches.
    /// TODO: remove when integrated in system filters in rr.
    /// </summary>
    public class QuickPatchThreadsFilter : ThreadFilter
    {
      internal static readonly bool IsJ9;

      static QuickPatchThreadsFilter()
      {
        IsJ9 = System.getProperty("java.vm.info", "<?>").contains("IBM J9");
      }

      public override bool Reject(Thread t)
      {
        if (IsJ9)
        {
          StackTraceElement[] stack = t.StackTrace;
          if (stack.Length > 0 && stack[stack.Length - 1].ClassName.Equals("java.util.Timer$TimerImpl"))
          {
            return true; // LUCENE-4736
          }
        }
        return false;
      }
    }

}
#endif