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/*
*
* 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.
*
*/
namespace Apache.Qpid.Integration.Tests.framework.clocksynch
{
/// <summary>
/// LocalClockSynchronizer is a fake <see cref="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>
/// </summary>
public class LocalClockSynchronizer : ClockSynchronizer
{
/// <summary>
/// The slave side should call this to copute a clock delta with the reference.
/// </summary>
/// <exception cref="Apache.Qpid.Integration.Tests.framework.clocksynch.ClockSynchFailureException"> If synchronization cannot be achieved. </exception>
public void synch() throws ClockSynchFailureException
{ }
/// <summary>
/// Gets the clock delta in nano seconds.
/// </summary>
/// <return> The clock delta in nano seconds. </return>
public long getDelta()
{
return 0L;
}
/// <summary>
/// Gets an estimate of the clock error in nan seconds.
/// </summary>
/// <return> An estimate of the clock error in nan seconds. </return>
public long getEpsilon()
{
return 0L;
}
/// <summary>
/// Gets the local clock time with any computed delta added in.
/// </summary>
/// <return> The local clock time with any computed delta added in. </return>
public long nanoTime()
{
return System.nanoTime();
}
}
}
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