1 /* 2 * Copyright (c) 2009-2010 jMonkeyEngine 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are 7 * met: 8 * 9 * * Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 12 * * Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * * Neither the name of 'jMonkeyEngine' nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 21 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR 24 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 25 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 26 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 27 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 28 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 29 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 30 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 31 */ 32 package jme3test.app; 33 34 import com.jme3.math.Vector3f; 35 import com.jme3.util.TempVars; 36 37 public class TestTempVars { 38 39 private static final int ITERATIONS = 10000000; 40 private static final int NANOS_TO_MS = 1000000; 41 42 private static final Vector3f sumCompute = new Vector3f(); 43 main(String[] args)44 public static void main(String[] args) { 45 long milliseconds, nanos; 46 47 for (int i = 0; i < 4; i++){ 48 System.gc(); 49 } 50 51 // sumCompute.set(0, 0, 0); 52 // long nanos = System.nanoTime(); 53 // for (int i = 0; i < ITERATIONS; i++) { 54 // recursiveMethod(0); 55 // } 56 // long milliseconds = (System.nanoTime() - nanos) / NANOS_TO_MS; 57 // System.out.println("100 million TempVars calls with 5 recursions: " + milliseconds + " ms"); 58 // System.out.println(sumCompute); 59 60 sumCompute.set(0, 0, 0); 61 nanos = System.nanoTime(); 62 for (int i = 0; i < ITERATIONS; i++) { 63 methodThatUsesTempVars(); 64 } 65 milliseconds = (System.nanoTime() - nanos) / NANOS_TO_MS; 66 System.out.println("100 million TempVars calls: " + milliseconds + " ms"); 67 System.out.println(sumCompute); 68 69 sumCompute.set(0, 0, 0); 70 nanos = System.nanoTime(); 71 for (int i = 0; i < ITERATIONS; i++) { 72 methodThatUsesAllocation(); 73 } 74 milliseconds = (System.nanoTime() - nanos) / NANOS_TO_MS; 75 System.out.println("100 million allocation calls: " + milliseconds + " ms"); 76 System.out.println(sumCompute); 77 78 nanos = System.nanoTime(); 79 for (int i = 0; i < 10; i++){ 80 System.gc(); 81 } 82 milliseconds = (System.nanoTime() - nanos) / NANOS_TO_MS; 83 System.out.println("cleanup time after allocation calls: " + milliseconds + " ms"); 84 } 85 methodThatUsesAllocation()86 public static void methodThatUsesAllocation(){ 87 Vector3f vector = new Vector3f(); 88 vector.set(0.1f, 0.2f, 0.3f); 89 sumCompute.addLocal(vector); 90 } 91 recursiveMethod(int recurse)92 public static void recursiveMethod(int recurse) { 93 TempVars vars = TempVars.get(); 94 { 95 vars.vect1.set(0.1f, 0.2f, 0.3f); 96 97 if (recurse < 4) { 98 recursiveMethod(recurse + 1); 99 } 100 101 sumCompute.addLocal(vars.vect1); 102 } 103 vars.release(); 104 } 105 methodThatUsesTempVars()106 public static void methodThatUsesTempVars() { 107 TempVars vars = TempVars.get(); 108 { 109 vars.vect1.set(0.1f, 0.2f, 0.3f); 110 sumCompute.addLocal(vars.vect1); 111 } 112 vars.release(); 113 } 114 } 115