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1   /*
2    * Copyright 2014 The Netty Project
3    *
4    * The Netty Project licenses this file to you under the Apache License,
5    * version 2.0 (the "License"); you may not use this file except in compliance
6    * with the License. You may obtain a copy of the License at:
7    *
8    *   https://www.apache.org/licenses/LICENSE-2.0
9    *
10   * Unless required by applicable law or agreed to in writing, software
11   * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
12   * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
13   * License for the specific language governing permissions and limitations
14   * under the License.
15   */
16  package io.netty.handler.codec.spdy;
17  
18  import io.netty.util.internal.ThrowableUtil;
19  
20  public class SpdyProtocolException extends Exception {
21  
22      private static final long serialVersionUID = 7870000537743847264L;
23  
24      /**
25       * Creates a new instance.
26       */
27      public SpdyProtocolException() { }
28  
29      /**
30       * Creates a new instance.
31       */
32      public SpdyProtocolException(String message, Throwable cause) {
33          super(message, cause);
34      }
35  
36      /**
37       * Creates a new instance.
38       */
39      public SpdyProtocolException(String message) {
40          super(message);
41      }
42  
43      /**
44       * Creates a new instance.
45       */
46      public SpdyProtocolException(Throwable cause) {
47          super(cause);
48      }
49  
50      static SpdyProtocolException newStatic(String message, Class<?> clazz, String method) {
51          final SpdyProtocolException exception = new StacklessSpdyProtocolException(message, true);
52          return ThrowableUtil.unknownStackTrace(exception, clazz, method);
53      }
54  
55      private SpdyProtocolException(String message, boolean shared) {
56          super(message, null, false, true);
57          assert shared;
58      }
59  
60      private static final class StacklessSpdyProtocolException extends SpdyProtocolException {
61          private static final long serialVersionUID = -6302754207557485099L;
62  
63          StacklessSpdyProtocolException(String message, boolean shared) {
64              super(message, shared);
65          }
66  
67          // Override fillInStackTrace() so we not populate the backtrace via a native call and so leak the
68          // Classloader.
69          @Override
70          public Throwable fillInStackTrace() {
71              return this;
72          }
73      }
74  }