01 /*
02 *
03 * Licensed to the Apache Software Foundation (ASF) under one
04 * or more contributor license agreements. See the NOTICE file
05 * distributed with this work for additional information
06 * regarding copyright ownership. The ASF licenses this file
07 * to you under the Apache License, Version 2.0 (the
08 * "License"); you may not use this file except in compliance
09 * with the License. You may obtain a copy of the License at
10 *
11 * http://www.apache.org/licenses/LICENSE-2.0
12 *
13 * Unless required by applicable law or agreed to in writing,
14 * software distributed under the License is distributed on an
15 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
16 * KIND, either express or implied. See the License for the
17 * specific language governing permissions and limitations
18 * under the License.
19 *
20 */
21 package org.apache.qpid.transport.util;
22
23
24 /**
25 * Waiter
26 *
27 */
28
29 public final class Waiter
30 {
31
32 private final Object lock;
33 private final long timeout;
34 private final long start;
35 private long elapsed;
36
37 public Waiter(Object lock, long timeout)
38 {
39 this.lock = lock;
40 this.timeout = timeout;
41 this.start = System.currentTimeMillis();
42 this.elapsed = 0;
43 }
44
45 public boolean hasTime()
46 {
47 return elapsed < timeout;
48 }
49
50 public void await()
51 {
52 try
53 {
54 lock.wait(timeout - elapsed);
55 }
56 catch (InterruptedException e)
57 {
58 // pass
59 }
60 elapsed = System.currentTimeMillis() - start;
61 }
62
63 }
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