01: /*
02: * Licensed to the Apache Software Foundation (ASF) under one or more
03: * contributor license agreements. See the NOTICE file distributed with
04: * this work for additional information regarding copyright ownership.
05: * The ASF licenses this file to You under the Apache License, Version 2.0
06: * (the "License"); you may not use this file except in compliance with
07: * the License. You may obtain a copy of the License at
08: *
09: * http://www.apache.org/licenses/LICENSE-2.0
10: *
11: * Unless required by applicable law or agreed to in writing, software
12: * distributed under the License is distributed on an "AS IS" BASIS,
13: * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14: * See the License for the specific language governing permissions and
15: * limitations under the License.
16: *
17: */
18:
19: package org.apache.jorphan.timer;
20:
21: /**
22: * A package-private implementation of {@link ITimer} based around Java system
23: * timer [<code>System.currentTimeMillis()</code> method]. It is used when
24: * <code>HRTimer</code> implementation is unavailable.
25: * <p>
26: * {@link TimerFactory} acts as the Factory for this class.
27: * <p>
28: * MT-safety: an instance of this class is safe to be used within the same
29: * thread only.
30: *
31: * @author <a href="mailto:vroubtsov@illinoisalumni.org">Vlad Roubtsov</a>
32: * @author Originally published in <a
33: * href="http://www.javaworld.com/javaworld/javaqa/2003-01/01-qa-0110-timing.html">JavaWorld</a>
34: * @author <a href="mailto:jeremy_a@bigfoot.com">Jeremy Arnold</a>
35: * @version $Revision: 493784 $
36: */
37: final class JavaSystemTimer extends AbstractTimer {
38: protected double getCurrentTime() {
39: return System.currentTimeMillis();
40: }
41: }
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