com.google.common.util.concurrent.Internal Maven / Gradle / Ivy
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This artifact provides a single jar that contains all classes required to use remote EJB and JMS, including
all dependencies. It is intended for use by those not using maven, maven users should just import the EJB and
JMS BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up
with different versions on classes on the class path).
/*
* Copyright (C) 2019 The Guava Authors
*
* Licensed 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 com.google.common.util.concurrent;
import com.google.common.annotations.GwtIncompatible;
import com.google.common.annotations.J2ktIncompatible;
import java.time.Duration;
/** This class is for {@code com.google.common.util.concurrent} use only! */
@J2ktIncompatible
@GwtIncompatible // java.time.Duration
@ElementTypesAreNonnullByDefault
final class Internal {
/**
* Returns the number of nanoseconds of the given duration without throwing or overflowing.
*
* Instead of throwing {@link ArithmeticException}, this method silently saturates to either
* {@link Long#MAX_VALUE} or {@link Long#MIN_VALUE}. This behavior can be useful when decomposing
* a duration in order to call a legacy API which requires a {@code long, TimeUnit} pair.
*/
static long toNanosSaturated(Duration duration) {
// Using a try/catch seems lazy, but the catch block will rarely get invoked (except for
// durations longer than approximately +/- 292 years).
try {
return duration.toNanos();
} catch (ArithmeticException tooBig) {
return duration.isNegative() ? Long.MIN_VALUE : Long.MAX_VALUE;
}
}
private Internal() {}
}