/* * Copyright 2014-present Facebook, Inc. * * 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.facebook.buck.timing; /** * {@link Clock} implementation that invokes the {@link System} calls, adjusted to use the given * nanos epoch. */ public class NanosAdjustedClock extends DefaultClock { private final long nanosEpoch; public NanosAdjustedClock(long nanosEpoch) { this(nanosEpoch, true); } public NanosAdjustedClock(long nanosEpoch, boolean enableThreadCpuTime) { super(enableThreadCpuTime); this.nanosEpoch = nanosEpoch - System.nanoTime(); } @Override public long nanoTime() { return System.nanoTime() + nanosEpoch; } }