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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  /**
23   * This balancer implements {@link Balancer} and does not do anything -no blocking operation.
24   *
25   * @author Tibor Digana (tibor17)
26   * @see Balancer
27   * @since 2.16
28   */
29  final class NullBalancer
30      implements Balancer
31  {
32      public boolean acquirePermit()
33      {
34          return true;
35      }
36  
37      public void releasePermit()
38      {
39      }
40  
41      public void releaseAllPermits()
42      {
43      }
44  }