| /* |
| * Copyright (C) 2013 The Android Open Source Project |
| * |
| * 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.android.internal.util; |
| |
| import com.google.android.collect.Lists; |
| import com.google.caliper.SimpleBenchmark; |
| |
| import java.io.File; |
| import java.io.FileOutputStream; |
| import java.io.IOException; |
| import java.io.PrintWriter; |
| import java.util.ArrayList; |
| |
| public class IndentingPrintWriterBenchmark extends SimpleBenchmark { |
| |
| private PrintWriter mDirect; |
| private IndentingPrintWriter mIndenting; |
| |
| private Node mSimple; |
| private Node mComplex; |
| |
| @Override |
| protected void setUp() throws IOException { |
| final FileOutputStream os = new FileOutputStream(new File("/dev/null")); |
| mDirect = new PrintWriter(os); |
| mIndenting = new IndentingPrintWriter(mDirect, " "); |
| |
| final Node manyChildren = Node.build("ManyChildren", Node.build("1"), Node.build("2"), |
| Node.build("3"), Node.build("4"), Node.build("5"), Node.build("6"), Node.build("7"), |
| Node.build("8"), Node.build("9"), Node.build("10")); |
| |
| mSimple = Node.build("RED"); |
| mComplex = Node.build("PARENT", Node.build("RED"), Node.build("GREEN", |
| Node.build("BLUE", manyChildren, manyChildren), manyChildren, manyChildren), |
| manyChildren); |
| } |
| |
| @Override |
| protected void tearDown() { |
| mIndenting.close(); |
| mIndenting = null; |
| mDirect = null; |
| } |
| |
| public void timeSimpleDirect(int reps) { |
| for (int i = 0; i < reps; i++) { |
| mSimple.dumpDirect(mDirect, 0); |
| } |
| } |
| |
| public void timeSimpleIndenting(int reps) { |
| for (int i = 0; i < reps; i++) { |
| mSimple.dumpIndenting(mIndenting); |
| } |
| } |
| |
| public void timeComplexDirect(int reps) { |
| for (int i = 0; i < reps; i++) { |
| mComplex.dumpDirect(mDirect, 0); |
| } |
| } |
| |
| public void timeComplexIndenting(int reps) { |
| for (int i = 0; i < reps; i++) { |
| mComplex.dumpIndenting(mIndenting); |
| } |
| } |
| |
| public void timePairRaw(int reps) { |
| final int value = 1024; |
| for (int i = 0; i < reps; i++) { |
| mDirect.print("key="); |
| mDirect.print(value); |
| mDirect.print(" "); |
| } |
| } |
| |
| public void timePairIndenting(int reps) { |
| final int value = 1024; |
| for (int i = 0; i < reps; i++) { |
| mIndenting.printPair("key", value); |
| } |
| } |
| |
| private static class Node { |
| public String name; |
| public ArrayList<Node> children; |
| |
| private static String[] sIndents = new String[] { "", " ", " ", " ", " " }; |
| |
| public static Node build(String name, Node... children) { |
| Node node = new Node(); |
| node.name = name; |
| if (children != null && children.length > 0) { |
| node.children = Lists.newArrayList(children); |
| } |
| return node; |
| } |
| |
| private void dumpSelf(PrintWriter pw) { |
| pw.print("Node "); |
| pw.print(name); |
| pw.print(" first "); |
| pw.print(512); |
| pw.print(" second "); |
| pw.print(1024); |
| pw.print(" third "); |
| pw.println(2048); |
| } |
| |
| public void dumpDirect(PrintWriter pw, int depth) { |
| pw.print(sIndents[depth]); |
| dumpSelf(pw); |
| |
| if (children != null) { |
| for (Node child : children) { |
| child.dumpDirect(pw, depth + 1); |
| } |
| } |
| |
| pw.println(); |
| } |
| |
| public void dumpIndenting(IndentingPrintWriter pw) { |
| dumpSelf(pw); |
| |
| if (children != null) { |
| pw.increaseIndent(); |
| for (Node child : children) { |
| child.dumpIndenting(pw); |
| } |
| pw.decreaseIndent(); |
| } |
| |
| pw.println(); |
| } |
| } |
| } |