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1   package org.apache.maven.surefire.junitcore.pc;
2   
3   /*
4    * Licensed to the Apache Software Foundation (ASF) under one
5    * or more contributor license agreements.  See the NOTICE file
6    * distributed with this work for additional information
7    * regarding copyright ownership.  The ASF licenses this file
8    * to you under the Apache License, Version 2.0 (the
9    * "License"); you may not use this file except in compliance
10   * with the License.  You may obtain a copy of the License at
11   *
12   *     http://www.apache.org/licenses/LICENSE-2.0
13   *
14   * Unless required by applicable law or agreed to in writing,
15   * software distributed under the License is distributed on an
16   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
17   * KIND, either express or implied.  See the License for the
18   * specific language governing permissions and limitations
19   * under the License.
20   */
21  
22  import org.junit.runners.ParentRunner;
23  
24  /**
25   * We need to wrap runners in a suite and count children of these runners.
26   * <p/>
27   * Old JUnit versions do not cache children after the first call of
28   * {@link org.junit.runners.ParentRunner#getChildren()}.
29   * Due to performance reasons, the children have to be observed just once.
30   *
31   * @author tibor17 (Tibor Digana)
32   * @see ParallelComputerBuilder
33   * @since 2.17
34   */
35  final class WrappedRunners
36  {
37      final ParentRunner wrappingSuite;
38  
39      final long embeddedChildrenCount;
40  
41      WrappedRunners( ParentRunner wrappingSuite, long embeddedChildrenCount )
42      {
43          this.wrappingSuite = wrappingSuite;
44          this.embeddedChildrenCount = embeddedChildrenCount;
45      }
46  
47      WrappedRunners()
48      {
49          this( null, 0 );
50      }
51  }