01: /*
02: * Copyright 2005 Joe Walker
03: *
04: * Licensed under the Apache License, Version 2.0 (the "License");
05: * you may not use this file except in compliance with the License.
06: * You may obtain a copy of the License at
07: *
08: * http://www.apache.org/licenses/LICENSE-2.0
09: *
10: * Unless required by applicable law or agreed to in writing, software
11: * distributed under the License is distributed on an "AS IS" BASIS,
12: * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13: * See the License for the specific language governing permissions and
14: * limitations under the License.
15: */
16: package org.directwebremoting.impl;
17:
18: import org.directwebremoting.extend.Sleeper;
19:
20: /**
21: * The simplest type of Sleeper that just uses {@link #wait()} and
22: * {@link #notify()} to halt a Thread and restart it.
23: * @author Joe Walker [joe at getahead dot ltd dot uk]
24: */
25: public class ThreadWaitSleeper implements Sleeper {
26: /* (non-Javadoc)
27: * @see org.directwebremoting.dwrp.PollHandler.Sleeper#goToSleep()
28: */
29: public void goToSleep(Runnable onAwakening) {
30: try {
31: synchronized (lock) {
32: lock.wait();
33: }
34: } catch (InterruptedException ex) {
35: Thread.interrupted();
36: } finally {
37: onAwakening.run();
38: }
39: }
40:
41: /* (non-Javadoc)
42: * @see org.directwebremoting.dwrp.PollHandler.Sleeper#wakeUp()
43: */
44: public void wakeUp() {
45: synchronized (lock) {
46: lock.notifyAll();
47: }
48: }
49:
50: /**
51: * The object to lock on
52: */
53: private Object lock = new Object();
54: }
|