93 lines
3.5 KiB
Java
93 lines
3.5 KiB
Java
/*
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* Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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import java.util.*;
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import java.nio.*;
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import java.nio.charset.*;
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public class StrCodingBenchmarkUTF8 {
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public static void main(String[] args) throws Throwable {
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final int itrs = Integer.getInteger("iterations", 100000);
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final int size = 2048;
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final int subsize = Integer.getInteger("subsize", 128);
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final Random rnd = new Random();
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final int maxchar = 0x7f;
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Charset charset = Charset.forName("UTF-8");
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final String csn = charset.name();
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final Charset cs = charset;
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int[] starts = new int[] { 0, 0x80, 0x800, 0x10000};
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for (int nb = 1; nb <= 4; nb++) {
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final CharsetEncoder enc = cs.newEncoder();
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char[] cc = new char[size];
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int i = 0;
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while (i < size - 3) {
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i += Character.toChars(starts[nb - 1] + rnd.nextInt(maxchar), cc, i);
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}
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final String string = new String(cc);
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final byte[] bytes = string.getBytes(cs);
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System.out.printf("%n--------%s[nb=%d]---------%n", csn, nb);
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int sz = 12;
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while (sz < size) {
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System.out.printf(" [len=%d]%n", sz);
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final byte[] bs = Arrays.copyOf(bytes, sz);
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final String str = new String(bs, csn);
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StrCodingBenchmark.Job[] jobs = {
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new StrCodingBenchmark.Job("String decode: csn") {
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public void work() throws Throwable {
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for (int i = 0; i < itrs; i++)
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new String(bs, csn);
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}},
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new StrCodingBenchmark.Job("String decode: cs") {
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public void work() throws Throwable {
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for (int i = 0; i < itrs; i++)
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new String(bs, cs);
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}},
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new StrCodingBenchmark.Job("String encode: csn") {
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public void work() throws Throwable {
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for (int i = 0; i < itrs; i++)
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str.getBytes(csn);
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}},
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new StrCodingBenchmark.Job("String encode: cs") {
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public void work() throws Throwable {
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for (int i = 0; i < itrs; i++)
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str.getBytes(cs);
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}},
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};
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StrCodingBenchmark.time(StrCodingBenchmark.filter(null, jobs));
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sz <<= 1;
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}
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}
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}
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}
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