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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>
- /// ClockSynchronizer provides an interface through which two nodes may synchronize their clocks. It is expected that one
- /// node will act as the reference clock, to which no delta need be applied, and the other node will act as the slave,
- /// and which must apply a delta to its local clock to get a clock synchronized with the reference.
- ///
- /// <p/>The slave side will initiate the computation of a clock delta by calling the <see cref="#synch"/> method. This method
- /// will not return until the delta has been computed, at which point there is a method to return its value, as well as
- /// an estimate of the likely error (usually one standard deviation), in the synchronization. For convenience there is a
- /// <see cref="#nanoTime"/> method to return the value of System.nanoTime() with the delta added in.
- ///
- /// <p/><table id="crc"><caption>CRC Card</caption>
- /// <tr><th> Responsibilities <th> Collaborations
- /// <tr><td> Trigger a clock synchronization.
- /// <tr><td> Compute a clock delta to apply to the local clock.
- /// <tr><td> Estimate the error in the synchronzation.
- /// </table>
- /// </summary>
- public interface ClockSynchronizer
- {
- /// <summary>
- /// The slave side should call this to copute a clock delta with the reference.
- /// </summary>
- /// <exception cref="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();
-
- /// <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();
-
- /// <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();
- }
-} \ No newline at end of file