| /* |
| * Copyright (C) 2013 Google Inc. |
| * |
| * 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 benchmarks; |
| |
| import com.google.caliper.Param; |
| |
| public class SystemArrayCopyBenchmark { |
| @Param({"2", "4", "8", "16", "32", "64", "128", "256", "512", "1024", |
| "2048", "4096", "8192", "16384", "32768", "65536", "131072", "262144"}) |
| int arrayLength; |
| |
| // Provides benchmarking for different types of arrays using the arraycopy function. |
| |
| public void timeSystemCharArrayCopy(int reps) { |
| final int len = arrayLength; |
| char[] src = new char[len]; |
| char[] dst = new char[len]; |
| for (int rep = 0; rep < reps; ++rep) { |
| System.arraycopy(src, 0, dst, 0, len); |
| } |
| } |
| |
| public void timeSystemByteArrayCopy(int reps) { |
| final int len = arrayLength; |
| byte[] src = new byte[len]; |
| byte[] dst = new byte[len]; |
| for (int rep = 0; rep < reps; ++rep) { |
| System.arraycopy(src, 0, dst, 0, len); |
| } |
| } |
| |
| public void timeSystemShortArrayCopy(int reps) { |
| final int len = arrayLength; |
| short[] src = new short[len]; |
| short[] dst = new short[len]; |
| for (int rep = 0; rep < reps; ++rep) { |
| System.arraycopy(src, 0, dst, 0, len); |
| } |
| } |
| |
| public void timeSystemIntArrayCopy(int reps) { |
| final int len = arrayLength; |
| int[] src = new int[len]; |
| int[] dst = new int[len]; |
| for (int rep = 0; rep < reps; ++rep) { |
| System.arraycopy(src, 0, dst, 0, len); |
| } |
| } |
| |
| public void timeSystemLongArrayCopy(int reps) { |
| final int len = arrayLength; |
| long[] src = new long[len]; |
| long[] dst = new long[len]; |
| for (int rep = 0; rep < reps; ++rep) { |
| System.arraycopy(src, 0, dst, 0, len); |
| } |
| } |
| |
| public void timeSystemFloatArrayCopy(int reps) { |
| final int len = arrayLength; |
| float[] src = new float[len]; |
| float[] dst = new float[len]; |
| for (int rep = 0; rep < reps; ++rep) { |
| System.arraycopy(src, 0, dst, 0, len); |
| } |
| } |
| |
| public void timeSystemDoubleArrayCopy(int reps) { |
| final int len = arrayLength; |
| double[] src = new double[len]; |
| double[] dst = new double[len]; |
| for (int rep = 0; rep < reps; ++rep) { |
| System.arraycopy(src, 0, dst, 0, len); |
| } |
| } |
| |
| public void timeSystemBooleanArrayCopy(int reps) { |
| final int len = arrayLength; |
| boolean[] src = new boolean[len]; |
| boolean[] dst = new boolean[len]; |
| for (int rep = 0; rep < reps; ++rep) { |
| System.arraycopy(src, 0, dst, 0, len); |
| } |
| } |
| } |