| /* |
| * |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| * |
| */ |
| package org.apache.qpid.test.framework.clocksynch; |
| |
| /** |
| * LocalClockSynchronizer is a fake {@link ClockSynchronizer} that simply calls System.nanoTime(). It exists so that |
| * the same tests can be run distributed or locally, taking timings against the ClockSynchronizer interface without |
| * being aware of how they are being run. |
| * |
| * <p/><table id="crc"><caption>CRC Card</caption> |
| * <tr><th> Responsibilities <th> Collaborations |
| * <tr><td> Supply the local clock with no delta. |
| * </table> |
| */ |
| public class LocalClockSynchronizer implements ClockSynchronizer |
| { |
| /** |
| * The slave side should call this to copute a clock delta with the reference. |
| * |
| * @throws org.apache.qpid.test.framework.clocksynch.ClockSynchFailureException |
| * If synchronization cannot be achieved. |
| */ |
| public void synch() throws ClockSynchFailureException |
| { } |
| |
| /** |
| * Gets the clock delta in nano seconds. |
| * |
| * @return The clock delta in nano seconds. |
| */ |
| public long getDelta() |
| { |
| return 0L; |
| } |
| |
| /** |
| * Gets an estimate of the clock error in nan seconds. |
| * |
| * @return An estimate of the clock error in nan seconds. |
| */ |
| public long getEpsilon() |
| { |
| return 0L; |
| } |
| |
| /** |
| * Gets the local clock time with any computed delta added in. |
| * |
| * @return The local clock time with any computed delta added in. |
| */ |
| public long nanoTime() |
| { |
| return System.nanoTime(); |
| } |
| } |