Remove unused Clock.
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/*
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* Copyright 2019, OpenConsensus Authors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package openconsensus.common;
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/**
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* Interface for getting the current time.
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*
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* @since 0.1.0
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*/
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public abstract class Clock {
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/**
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* Obtains the current instant from this clock.
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*
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* @return the current instant.
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* @since 0.1.0
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*/
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public abstract Timestamp now();
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/**
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* Returns a time measurement with nanosecond precision that can only be used to calculate elapsed
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* time.
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*
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* @return a time measurement with nanosecond precision that can only be used to calculate elapsed
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* time.
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* @since 0.1.0
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*/
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public abstract long nowNanos();
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}
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/*
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* Copyright 2019, OpenConsensus Authors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package openconsensus.internal;
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import javax.annotation.concurrent.Immutable;
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import openconsensus.common.Clock;
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import openconsensus.common.Timestamp;
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/** A {@link Clock} that always returns 0. */
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@Immutable
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public final class ZeroTimeClock extends Clock {
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private static final ZeroTimeClock INSTANCE = new ZeroTimeClock();
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private static final Timestamp ZERO_TIMESTAMP = Timestamp.create(0, 0);
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private ZeroTimeClock() {}
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/**
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* Returns a {@code ZeroTimeClock}.
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*
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* @return a {@code ZeroTimeClock}.
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*/
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public static ZeroTimeClock getInstance() {
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return INSTANCE;
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}
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@Override
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public Timestamp now() {
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return ZERO_TIMESTAMP;
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}
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@Override
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public long nowNanos() {
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return 0;
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}
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}
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