| /* |
| * Copyright (c) 2011, 2012, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| package com.apple.jobjc; |
| |
| import sun.misc.Unsafe; |
| |
| public class BaseBench extends PooledTestCase { |
| protected final static JObjCRuntime RUNTIME = JObjCRuntime.getInstance(); |
| protected final static JObjC JOBJC = JObjC.getInstance(); |
| protected final static Unsafe UNSAFE = JObjCRuntime.getInstance().unsafe; |
| protected final static NativeArgumentBuffer ARGS = JObjCRuntime.getInstance().getThreadLocalState(); |
| |
| public abstract static class Task{ |
| final String name; |
| public Task(String name){ this.name = name; } |
| public abstract void run(); |
| } |
| |
| public void bench(final String title, final long warmup, final long runs, final long iterations, final Task... tasks){ |
| final long[] runtimes = new long[tasks.length]; |
| |
| for(int t = 0; t < tasks.length; ++t){ |
| long runtime = 0; |
| for(int i = 0; i < warmup; ++i) |
| singleBench(iterations, tasks[t]); |
| for(int i = 0; i < runs; ++i) |
| runtime = runtime + singleBench(iterations, tasks[t]); |
| runtimes[t] = runtime; |
| } |
| |
| final float[] relatives = new float[tasks.length]; |
| |
| for(int t = 0; t < tasks.length; ++t) |
| relatives[t] = ((float) runtimes[t] / (float) runs); |
| |
| float min = relatives[0]; |
| for(float t : relatives) |
| if(t < min) |
| min = t; |
| |
| for(int t = 0; t < tasks.length; ++t) |
| relatives[t] = relatives[t] / min; |
| |
| System.out.format("\n* %1$s\n", title); |
| for(int t = 0; t < tasks.length; ++t) |
| System.out.format("%1$60s : %2$.1f\n", tasks[t].name, relatives[t]); |
| } |
| |
| public long singleBench(final long iterations, final Task task){ |
| long start = System.currentTimeMillis(); |
| for(long i = 0; i < iterations; ++i) |
| task.run(); |
| long end = System.currentTimeMillis(); |
| return end - start; |
| } |
| } |