StackTest.java

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 * Copyright (c) 2013, Daniel Murphy
 * All rights reserved.
 * 
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 * are permitted provided that the following conditions are met:
 * 	* Redistributions of source code must retain the above copyright notice,
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 * 	  this list of conditions and the following disclaimer in the documentation
 * 	  and/or other materials provided with the distribution.
 * 
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 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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 * POSSIBILITY OF SUCH DAMAGE.
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/**
 * Created at 6:24:51 AM Jan 20, 2011
 */
package org.jbox2d.testbed.perf;

import org.jbox2d.common.MathUtils;
import org.jbox2d.common.Vec2;
import org.jbox2d.pooling.IWorldPool;
import org.jbox2d.pooling.normal.DefaultWorldPool;
import org.jbox2d.profile.BasicPerformanceTest;


//Test Name               Milliseconds Avg
//Pop2Sep                           6.9922
//Pop2Cont                          7.0805
//Pop3Sep                           9.9359
//Pop3Cont                         10.1472
//Pop4Sep                          13.8380
//Pop4Cont                         14.0874
//Pop9Sep                          31.5494
//Pop9Cont                         31.0169

/**
 * @author Daniel Murphy
 */
public class StackTest extends BasicPerformanceTest {

  public static final int INNER_ITERS = 50000;
  public static final int OUTER_ITERS = 200;

  public static String[] tests = new String[] {"Pop2Sep", "Pop2Cont", "Pop3Sep", "Pop3Cont",
      "Pop4Sep", "Pop4Cont", "Pop9Sep", "Pop9Cont"};
  public static float aStore = 0;

  public StackTest() {
    super(8, OUTER_ITERS, INNER_ITERS);
  }


  public float op(Vec2 argVec) {
    argVec.set(MathUtils.randomFloat(-100, 100), MathUtils.randomFloat(-100, 100));
    argVec.mulLocal(3.2f);
    float s = argVec.length();
    argVec.normalize();
    return s;
  }

  private final IWorldPool wp = new DefaultWorldPool(100, 10);

  @Override
  public void step(int argNum) {
    float a = 0;
    for (int i = 0; i < INNER_ITERS; i++) {
      switch (argNum) {
        case 0: {
          final Vec2 v1 = wp.popVec2();
          final Vec2 v2 = wp.popVec2();
          a += op(v1);
          a += op(v2);
          wp.pushVec2(2);
          break;
        }
        case 1: {
          final Vec2[] pc = wp.popVec2(2);
          a += op(pc[0]);
          a += op(pc[1]);
          wp.pushVec2(2);
          break;
        }
        case 2: {
          final Vec2 v1 = wp.popVec2();
          final Vec2 v2 = wp.popVec2();
          final Vec2 v3 = wp.popVec2();
          a += op(v1);
          a += op(v2);
          a += op(v3);
          wp.pushVec2(3);
          break;
        }
        case 3: {
          final Vec2[] pc = wp.popVec2(3);
          a += op(pc[0]);
          a += op(pc[1]);
          a += op(pc[2]);
          wp.pushVec2(3);
          break;
        }
        case 4: {
          final Vec2 v1 = wp.popVec2();
          final Vec2 v2 = wp.popVec2();
          final Vec2 v3 = wp.popVec2();
          final Vec2 v4 = wp.popVec2();
          a += op(v1);
          a += op(v2);
          a += op(v3);
          a += op(v4);
          wp.pushVec2(4);
          break;
        }
        case 5: {
          final Vec2[] pc = wp.popVec2(4);
          a += op(pc[0]);
          a += op(pc[1]);
          a += op(pc[2]);
          a += op(pc[3]);
          wp.pushVec2(4);
        }
          break;
        case 6: {
          final Vec2 v1 = wp.popVec2();
          final Vec2 v2 = wp.popVec2();
          final Vec2 v3 = wp.popVec2();
          final Vec2 v4 = wp.popVec2();
          final Vec2 v5 = wp.popVec2();
          final Vec2 v6 = wp.popVec2();
          final Vec2 v7 = wp.popVec2();
          final Vec2 v8 = wp.popVec2();
          final Vec2 v9 = wp.popVec2();
          a += op(v1);
          a += op(v2);
          a += op(v3);
          a += op(v4);
          a += op(v5);
          a += op(v6);
          a += op(v7);
          a += op(v8);
          a += op(v9);
          wp.pushVec2(9);
          break;
        }
        case 7: {
          final Vec2[] pc = wp.popVec2(9);
          a += op(pc[0]);
          a += op(pc[1]);
          a += op(pc[2]);
          a += op(pc[3]);
          a += op(pc[4]);
          a += op(pc[5]);
          a += op(pc[6]);
          a += op(pc[7]);
          a += op(pc[8]);
          wp.pushVec2(9);
          break;
        }
      }
    }
    aStore += a;
  }

  @Override
  public String getTestName(int argNum) {
    return tests[argNum];
  }

  public static void main(String[] c) {
    (new StackTest()).go();
  }
}