1 /* 2 * Copyright (C) 2014 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.tools.layoutlib.java; 18 19 import com.android.tools.layoutlib.create.ReplaceMethodCallsAdapter; 20 21 import java.util.concurrent.TimeUnit; 22 import java.util.concurrent.atomic.AtomicLong; 23 24 /** 25 * Provides dummy implementation of methods that don't exist on the host VM. 26 * This also providers a time control that allows to set a specific system time. 27 * 28 * @see ReplaceMethodCallsAdapter 29 */ 30 @SuppressWarnings("unused") 31 public class System_Delegate { 32 // Current system time 33 private static AtomicLong mNanosTime = new AtomicLong(System.nanoTime()); 34 // Time that the system booted up in nanos 35 private static AtomicLong mBootNanosTime = new AtomicLong(System.nanoTime()); 36 log(String message)37 public static void log(String message) { 38 // ignore. 39 } 40 log(String message, Throwable th)41 public static void log(String message, Throwable th) { 42 // ignore. 43 } 44 setNanosTime(long nanos)45 public static void setNanosTime(long nanos) { 46 mNanosTime.set(nanos); 47 } 48 setBootTimeNanos(long nanos)49 public static void setBootTimeNanos(long nanos) { 50 mBootNanosTime.set(nanos); 51 } 52 nanoTime()53 public static long nanoTime() { 54 return mNanosTime.get(); 55 } 56 currentTimeMillis()57 public static long currentTimeMillis() { 58 return TimeUnit.NANOSECONDS.toMillis(mNanosTime.get()); 59 } 60 bootTime()61 public static long bootTime() { 62 return mBootNanosTime.get(); 63 } 64 bootTimeMillis()65 public static long bootTimeMillis() { 66 return TimeUnit.NANOSECONDS.toMillis(mBootNanosTime.get()); 67 } 68 } 69