io.datakernel.time.CurrentTimeProviderStatic Maven / Gradle / Ivy
/*
* Copyright (C) 2015 SoftIndex LLC.
*
* 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 io.datakernel.time;
/**
* Singleton which gives access to current time in program in milliseconds
*/
public final class CurrentTimeProviderStatic implements CurrentTimeProvider {
/**
* Creates a new instance of provider
*/
private final static CurrentTimeProviderStatic INSTANCE = new CurrentTimeProviderStatic();
/**
* @return instance of provider
*/
public static CurrentTimeProviderStatic instance() {
return INSTANCE;
}
private CurrentTimeProviderStatic() {
}
/**
* Current time in program
*/
private volatile long time;
/**
* @return current time in program
*/
@Override
public long currentTimeMillis() {
return time;
}
/**
* Refreshes the time in program, assigns it current system time.
*/
public void refresh() {
time = System.currentTimeMillis();
}
}