1 /*
2 * Copyright 2012 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
17 package io.netty.util;
18
19 /**
20 * An {@link IllegalStateException} which is raised when a user attempts to access a {@link ReferenceCounted} whose
21 * reference count has been decreased to 0 (and consequently freed).
22 */
23 public class IllegalReferenceCountException extends IllegalStateException {
24
25 private static final long serialVersionUID = -2507492394288153468L;
26
27 public IllegalReferenceCountException() { }
28
29 public IllegalReferenceCountException(int refCnt) {
30 this("refCnt: " + refCnt);
31 }
32
33 public IllegalReferenceCountException(int refCnt, int increment) {
34 this("refCnt: " + refCnt + ", " + (increment > 0? "increment: " + increment : "decrement: " + -increment));
35 }
36
37 public IllegalReferenceCountException(String message) {
38 super(message);
39 }
40
41 public IllegalReferenceCountException(String message, Throwable cause) {
42 super(message, cause);
43 }
44
45 public IllegalReferenceCountException(Throwable cause) {
46 super(cause);
47 }
48 }