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/*
* Copyright (c) 2011, 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.
*
* 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.
*/
import java.util.*;
import java.nio.*;
import java.nio.charset.*;
public class StrCodingBenchmarkUTF8 {
public static void main(String[] args) throws Throwable {
final int itrs = Integer.getInteger("iterations", 100000);
final int size = 2048;
final int subsize = Integer.getInteger("subsize", 128);
final Random rnd = new Random();
final int maxchar = 0x7f;
Charset charset = Charset.forName("UTF-8");
final String csn = charset.name();
final Charset cs = charset;
int[] starts = new int[] { 0, 0x80, 0x800, 0x10000};
for (int nb = 1; nb <= 4; nb++) {
final CharsetEncoder enc = cs.newEncoder();
char[] cc = new char[size];
int i = 0;
while (i < size - 3) {
i += Character.toChars(starts[nb - 1] + rnd.nextInt(maxchar), cc, i);
}
final String string = new String(cc);
final byte[] bytes = string.getBytes(cs);
System.out.printf("%n--------%s[nb=%d]---------%n", csn, nb);
int sz = 12;
while (sz < size) {
System.out.printf(" [len=%d]%n", sz);
final byte[] bs = Arrays.copyOf(bytes, sz);
final String str = new String(bs, csn);
StrCodingBenchmark.Job[] jobs = {
new StrCodingBenchmark.Job("String decode: csn") {
public void work() throws Throwable {
for (int i = 0; i < itrs; i++)
new String(bs, csn);
}},
new StrCodingBenchmark.Job("String decode: cs") {
public void work() throws Throwable {
for (int i = 0; i < itrs; i++)
new String(bs, cs);
}},
new StrCodingBenchmark.Job("String encode: csn") {
public void work() throws Throwable {
for (int i = 0; i < itrs; i++)
str.getBytes(csn);
}},
new StrCodingBenchmark.Job("String encode: cs") {
public void work() throws Throwable {
for (int i = 0; i < itrs; i++)
str.getBytes(cs);
}},
};
StrCodingBenchmark.time(StrCodingBenchmark.filter(null, jobs));
sz <<= 1;
}
}
}
}
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