com.diozero.util.SleepUtil Maven / Gradle / Ivy
package com.diozero.util;
/*
* #%L
* Organisation: diozero
* Project: Device I/O Zero - Core
* Filename: SleepUtil.java
*
* This file is part of the diozero project. More information about this project
* can be found at http://www.diozero.com/
* %%
* Copyright (C) 2016 - 2020 diozero
* %%
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
* #L%
*/
import java.util.concurrent.TimeUnit;
import org.tinylog.Logger;
public class SleepUtil {
static {
try {
LibraryLoader.loadLibrary(SleepUtil.class, "diozero-system-utils");
} catch (Throwable t) {
Logger.error(t, "Error loading diozero-system-utils: " + t);
}
}
public static final int MS_IN_SEC = 1000;
public static final long US_IN_SEC = MS_IN_SEC * 1000;
public static final long NS_IN_SEC = US_IN_SEC * 1000;
public static final int NS_IN_US = 1000;
public static final int US_IN_MS = 1000;
public static final long NS_IN_MS = NS_IN_US * US_IN_MS;
/**
* Sleep for the specific number of seconds
* @param secs Number of seconds to sleep for
*/
public static void sleepSeconds(int secs) {
sleepMillis(TimeUnit.SECONDS.toMillis(secs));
}
/**
* Sleep for the specific number of seconds
* @param secs Number of seconds to sleep for
*/
public static void sleepSeconds(double secs) {
long millis = (long) (secs * MS_IN_SEC);
sleepMillis(millis);
}
/**
* Sleep for the specific number of milliseconds
* @param millis Number of milliseconds to sleep for
*/
public static void sleepMillis(long millis) {
try {
Thread.sleep(millis);
} catch (InterruptedException ex) {
}
}
/**
* Sleep for the specific number of microseconds
* @param micros Number of microseconds to sleep for
*/
public static void sleepMicros(int micros) {
sleepNanos((int) TimeUnit.MICROSECONDS.toNanos(micros));
}
/**
* Sleep for the specified number of nanoseconds.
* @param nanos Number of nanoseconds
*/
public static void sleepNanos(int nanos) {
sleepNanos(0, nanos);
}
public static void busySleep(final long nanos) {
final long startTime = System.nanoTime();
do {
} while ((System.nanoTime() - startTime) < nanos);
}
private static native long sleepNanos(int seconds, long nanos);
public static void main(String[] args) {
System.out.println("Sleeping for 2.5s");
sleepNanos(2, 500_000_000);
System.out.println("Done");
}
}