1*795d594fSAndroid Build Coastguard Worker /* 2*795d594fSAndroid Build Coastguard Worker * Copyright (C) 2007 The Android Open Source Project 3*795d594fSAndroid Build Coastguard Worker * 4*795d594fSAndroid Build Coastguard Worker * Licensed under the Apache License, Version 2.0 (the "License"); 5*795d594fSAndroid Build Coastguard Worker * you may not use this file except in compliance with the License. 6*795d594fSAndroid Build Coastguard Worker * You may obtain a copy of the License at 7*795d594fSAndroid Build Coastguard Worker * 8*795d594fSAndroid Build Coastguard Worker * http://www.apache.org/licenses/LICENSE-2.0 9*795d594fSAndroid Build Coastguard Worker * 10*795d594fSAndroid Build Coastguard Worker * Unless required by applicable law or agreed to in writing, software 11*795d594fSAndroid Build Coastguard Worker * distributed under the License is distributed on an "AS IS" BASIS, 12*795d594fSAndroid Build Coastguard Worker * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13*795d594fSAndroid Build Coastguard Worker * See the License for the specific language governing permissions and 14*795d594fSAndroid Build Coastguard Worker * limitations under the License. 15*795d594fSAndroid Build Coastguard Worker */ 16*795d594fSAndroid Build Coastguard Worker 17*795d594fSAndroid Build Coastguard Worker /** 18*795d594fSAndroid Build Coastguard Worker * Array write speed test. 19*795d594fSAndroid Build Coastguard Worker */ 20*795d594fSAndroid Build Coastguard Worker public class Main { 21*795d594fSAndroid Build Coastguard Worker /** whether to report times */ 22*795d594fSAndroid Build Coastguard Worker static boolean timing = false; 23*795d594fSAndroid Build Coastguard Worker 24*795d594fSAndroid Build Coastguard Worker static final int STORAGE_SIZE = 128*1024; 25*795d594fSAndroid Build Coastguard Worker static int[] mStorage = new int[STORAGE_SIZE]; 26*795d594fSAndroid Build Coastguard Worker report(long start, long end)27*795d594fSAndroid Build Coastguard Worker static public void report(long start, long end) { 28*795d594fSAndroid Build Coastguard Worker if (! timing) { 29*795d594fSAndroid Build Coastguard Worker return; 30*795d594fSAndroid Build Coastguard Worker } 31*795d594fSAndroid Build Coastguard Worker 32*795d594fSAndroid Build Coastguard Worker System.out.println("Finished in " + ((end - start) / 1000000.0) 33*795d594fSAndroid Build Coastguard Worker + " msec"); 34*795d594fSAndroid Build Coastguard Worker } 35*795d594fSAndroid Build Coastguard Worker writeArray(int val)36*795d594fSAndroid Build Coastguard Worker static void writeArray(int val) { 37*795d594fSAndroid Build Coastguard Worker for (int i = STORAGE_SIZE-1; i >= 0; i--) 38*795d594fSAndroid Build Coastguard Worker mStorage[i] = val; 39*795d594fSAndroid Build Coastguard Worker } 40*795d594fSAndroid Build Coastguard Worker writeTest()41*795d594fSAndroid Build Coastguard Worker static void writeTest() { 42*795d594fSAndroid Build Coastguard Worker long start, end; 43*795d594fSAndroid Build Coastguard Worker 44*795d594fSAndroid Build Coastguard Worker writeArray(0); // touch all the memory 45*795d594fSAndroid Build Coastguard Worker 46*795d594fSAndroid Build Coastguard Worker System.out.println("Running writeTest..."); 47*795d594fSAndroid Build Coastguard Worker start = System.nanoTime(); 48*795d594fSAndroid Build Coastguard Worker for (int i = 1; i < 20; i++) 49*795d594fSAndroid Build Coastguard Worker writeArray(i); 50*795d594fSAndroid Build Coastguard Worker end = System.nanoTime(); 51*795d594fSAndroid Build Coastguard Worker 52*795d594fSAndroid Build Coastguard Worker report(start, end); 53*795d594fSAndroid Build Coastguard Worker } 54*795d594fSAndroid Build Coastguard Worker copyTest()55*795d594fSAndroid Build Coastguard Worker static void copyTest() { 56*795d594fSAndroid Build Coastguard Worker long start, end; 57*795d594fSAndroid Build Coastguard Worker 58*795d594fSAndroid Build Coastguard Worker // touch once 59*795d594fSAndroid Build Coastguard Worker System.arraycopy(mStorage, 0, mStorage, 60*795d594fSAndroid Build Coastguard Worker STORAGE_SIZE/2, STORAGE_SIZE/2); 61*795d594fSAndroid Build Coastguard Worker 62*795d594fSAndroid Build Coastguard Worker System.out.println("Running copyTest..."); 63*795d594fSAndroid Build Coastguard Worker start = System.nanoTime(); 64*795d594fSAndroid Build Coastguard Worker for (int i = 1; i < 35; i++) { 65*795d594fSAndroid Build Coastguard Worker System.arraycopy(mStorage, 0, mStorage, 66*795d594fSAndroid Build Coastguard Worker STORAGE_SIZE/2, STORAGE_SIZE/2); 67*795d594fSAndroid Build Coastguard Worker } 68*795d594fSAndroid Build Coastguard Worker end = System.nanoTime(); 69*795d594fSAndroid Build Coastguard Worker 70*795d594fSAndroid Build Coastguard Worker report(start, end); 71*795d594fSAndroid Build Coastguard Worker } 72*795d594fSAndroid Build Coastguard Worker array_028()73*795d594fSAndroid Build Coastguard Worker public static void array_028() { 74*795d594fSAndroid Build Coastguard Worker writeTest(); 75*795d594fSAndroid Build Coastguard Worker copyTest(); 76*795d594fSAndroid Build Coastguard Worker System.out.println("Done!"); 77*795d594fSAndroid Build Coastguard Worker } 78*795d594fSAndroid Build Coastguard Worker main(String[] args)79*795d594fSAndroid Build Coastguard Worker public static void main(String[] args) { 80*795d594fSAndroid Build Coastguard Worker if ((args.length >= 1) && args[0].equals("--timing")) { 81*795d594fSAndroid Build Coastguard Worker timing = true; 82*795d594fSAndroid Build Coastguard Worker } 83*795d594fSAndroid Build Coastguard Worker array_028(); 84*795d594fSAndroid Build Coastguard Worker } 85*795d594fSAndroid Build Coastguard Worker } 86