/*
* 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.hadoop.util;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.classification.InterfaceStability;
@InterfaceStability.Evolving
public class ThreadUtil {
private static final Log LOG = LogFactory.getLog(ThreadUtil.class);
/**
* Cause the current thread to sleep as close as possible to the provided
* number of milliseconds. This method will log and ignore any
* {@link InterruptedException} encountered.
*
* @param millis the number of milliseconds for the current thread to sleep
*/
public static void sleepAtLeastIgnoreInterrupts(long millis) {
long start = Time.now();
while (Time.now() - start < millis) {
long timeToSleep = millis -
(Time.now() - start);
try {
Thread.sleep(timeToSleep);
} catch (InterruptedException ie) {
LOG.warn("interrupted while sleeping", ie);
}
}
}
}