aoqi@0: /*
aoqi@0:  * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
aoqi@0:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0:  *
aoqi@0:  * This code is free software; you can redistribute it and/or modify it
aoqi@0:  * under the terms of the GNU General Public License version 2 only, as
aoqi@0:  * published by the Free Software Foundation.
aoqi@0:  *
aoqi@0:  * This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
aoqi@0:  * version 2 for more details (a copy is included in the LICENSE file that
aoqi@0:  * accompanied this code).
aoqi@0:  *
aoqi@0:  * You should have received a copy of the GNU General Public License version
aoqi@0:  * 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0:  *
aoqi@0:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0:  * or visit www.oracle.com if you need additional information or have any
aoqi@0:  * questions.
aoqi@0:  */
aoqi@0: 
aoqi@0: /*
aoqi@0:  * @test
aoqi@0:  * @bug 6896617
aoqi@0:  * @summary Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() with SSE instructions on x86
aoqi@0:  * @run main/othervm/timeout=1200 -Xbatch -Xmx256m Test6896617
aoqi@0:  *
aoqi@0:  */
aoqi@0: 
aoqi@0: import java.util.*;
aoqi@0: import java.nio.*;
aoqi@0: import java.nio.charset.*;
aoqi@0: 
aoqi@0: public class Test6896617 {
aoqi@0:     final static int SIZE = 256;
aoqi@0: 
aoqi@0:     public static void main(String[] args) {
aoqi@0:         String csn = "ISO-8859-1";
aoqi@0:         Charset cs = Charset.forName(csn);
aoqi@0:         CharsetEncoder enc = cs.newEncoder();
aoqi@0:         enc.onMalformedInput(CodingErrorAction.REPLACE)
aoqi@0:            .onUnmappableCharacter(CodingErrorAction.REPLACE);
aoqi@0:         CharsetDecoder dec = cs.newDecoder();
aoqi@0:         dec.onMalformedInput(CodingErrorAction.REPLACE)
aoqi@0:            .onUnmappableCharacter(CodingErrorAction.REPLACE);
aoqi@0: 
aoqi@0:         byte repl = (byte)'?';
aoqi@0:         enc.replaceWith(new byte[] { repl });
aoqi@0: 
aoqi@0:         // Use internal API for tests.
aoqi@0:         sun.nio.cs.ArrayEncoder arrenc = (sun.nio.cs.ArrayEncoder)enc;
aoqi@0:         sun.nio.cs.ArrayDecoder arrdec = (sun.nio.cs.ArrayDecoder)dec;
aoqi@0: 
aoqi@0:         // Populate char[] with chars which can be encoded by ISO_8859_1 (<= 0xFF)
aoqi@0:         Random rnd = new Random(0);
aoqi@0:         int maxchar = 0xFF;
aoqi@0:         char[] a = new char[SIZE];
aoqi@0:         byte[] b = new byte[SIZE];
aoqi@0:         char[] at = new char[SIZE];
aoqi@0:         byte[] bt = new byte[SIZE];
aoqi@0:         for (int i = 0; i < SIZE; i++) {
aoqi@0:             char c = (char) rnd.nextInt(maxchar);
aoqi@0:             if (!enc.canEncode(c)) {
aoqi@0:                 System.out.printf("Something wrong: can't encode c=%03x\n", (int)c);
aoqi@0:                 System.exit(97);
aoqi@0:             }
aoqi@0:             a[i] = c;
aoqi@0:             b[i] = (byte)c;
aoqi@0:             at[i] = (char)-1;
aoqi@0:             bt[i] = (byte)-1;
aoqi@0:         }
aoqi@0:         if (arrenc.encode(a, 0, SIZE, bt) != SIZE || !Arrays.equals(b, bt)) {
aoqi@0:             System.out.println("Something wrong: ArrayEncoder.encode failed");
aoqi@0:             System.exit(97);
aoqi@0:         }
aoqi@0:         if (arrdec.decode(b, 0, SIZE, at) != SIZE || !Arrays.equals(a, at)) {
aoqi@0:             System.out.println("Something wrong: ArrayDecoder.decode failed");
aoqi@0:             System.exit(97);
aoqi@0:         }
aoqi@0:         for (int i = 0; i < SIZE; i++) {
aoqi@0:             at[i] = (char)-1;
aoqi@0:             bt[i] = (byte)-1;
aoqi@0:         }
aoqi@0: 
aoqi@0:         ByteBuffer bb  = ByteBuffer.wrap(b);
aoqi@0:         CharBuffer ba  = CharBuffer.wrap(a);
aoqi@0:         ByteBuffer bbt = ByteBuffer.wrap(bt);
aoqi@0:         CharBuffer bat = CharBuffer.wrap(at);
aoqi@0:         if (!enc.encode(ba, bbt, true).isUnderflow() || !Arrays.equals(b, bt)) {
aoqi@0:             System.out.println("Something wrong: Encoder.encode failed");
aoqi@0:             System.exit(97);
aoqi@0:         }
aoqi@0:         if (!dec.decode(bb, bat, true).isUnderflow() || !Arrays.equals(a, at)) {
aoqi@0:             System.out.println("Something wrong: Decoder.decode failed");
aoqi@0:             System.exit(97);
aoqi@0:         }
aoqi@0:         for (int i = 0; i < SIZE; i++) {
aoqi@0:             at[i] = (char)-1;
aoqi@0:             bt[i] = (byte)-1;
aoqi@0:         }
aoqi@0: 
aoqi@0:         // Warm up
aoqi@0:         boolean failed = false;
aoqi@0:         int result = 0;
aoqi@0:         for (int i = 0; i < 10000; i++) {
aoqi@0:             result += arrenc.encode(a, 0, SIZE, bt);
aoqi@0:             result -= arrdec.decode(b, 0, SIZE, at);
aoqi@0:         }
aoqi@0:         for (int i = 0; i < 10000; i++) {
aoqi@0:             result += arrenc.encode(a, 0, SIZE, bt);
aoqi@0:             result -= arrdec.decode(b, 0, SIZE, at);
aoqi@0:         }
aoqi@0:         for (int i = 0; i < 10000; i++) {
aoqi@0:             result += arrenc.encode(a, 0, SIZE, bt);
aoqi@0:             result -= arrdec.decode(b, 0, SIZE, at);
aoqi@0:         }
aoqi@0:         if (result != 0 || !Arrays.equals(b, bt) || !Arrays.equals(a, at)) {
aoqi@0:             failed = true;
aoqi@0:             System.out.println("Failed: ArrayEncoder.encode char[" + SIZE + "] and ArrayDecoder.decode byte[" + SIZE + "]");
aoqi@0:         }
aoqi@0:         for (int i = 0; i < SIZE; i++) {
aoqi@0:             at[i] = (char)-1;
aoqi@0:             bt[i] = (byte)-1;
aoqi@0:         }
aoqi@0: 
aoqi@0:         boolean is_underflow = true;
aoqi@0:         for (int i = 0; i < 10000; i++) {
aoqi@0:             ba.clear(); bb.clear(); bat.clear(); bbt.clear();
aoqi@0:             boolean enc_res = enc.encode(ba, bbt, true).isUnderflow();
aoqi@0:             boolean dec_res = dec.decode(bb, bat, true).isUnderflow();
aoqi@0:             is_underflow = is_underflow && enc_res && dec_res;
aoqi@0:         }
aoqi@0:         for (int i = 0; i < SIZE; i++) {
aoqi@0:             at[i] = (char)-1;
aoqi@0:             bt[i] = (byte)-1;
aoqi@0:         }
aoqi@0:         for (int i = 0; i < 10000; i++) {
aoqi@0:             ba.clear(); bb.clear(); bat.clear(); bbt.clear();
aoqi@0:             boolean enc_res = enc.encode(ba, bbt, true).isUnderflow();
aoqi@0:             boolean dec_res = dec.decode(bb, bat, true).isUnderflow();
aoqi@0:             is_underflow = is_underflow && enc_res && dec_res;
aoqi@0:         }
aoqi@0:         for (int i = 0; i < SIZE; i++) {
aoqi@0:             at[i] = (char)-1;
aoqi@0:             bt[i] = (byte)-1;
aoqi@0:         }
aoqi@0:         for (int i = 0; i < 10000; i++) {
aoqi@0:             ba.clear(); bb.clear(); bat.clear(); bbt.clear();
aoqi@0:             boolean enc_res = enc.encode(ba, bbt, true).isUnderflow();
aoqi@0:             boolean dec_res = dec.decode(bb, bat, true).isUnderflow();
aoqi@0:             is_underflow = is_underflow && enc_res && dec_res;
aoqi@0:         }
aoqi@0:         if (!is_underflow || !Arrays.equals(b, bt) || !Arrays.equals(a, at)) {
aoqi@0:             failed = true;
aoqi@0:             System.out.println("Failed: Encoder.encode char[" + SIZE + "] and Decoder.decode byte[" + SIZE + "]");
aoqi@0:         }
aoqi@0: 
aoqi@0:         // Test encoder with different source and destination sizes
aoqi@0:         System.out.println("Testing different source and destination sizes");
aoqi@0:         for (int i = 1; i <= SIZE; i++) {
aoqi@0:             for (int j = 1; j <= SIZE; j++) {
aoqi@0:                 bt = new byte[j];
aoqi@0:                 // very source's SIZE
aoqi@0:                 result = arrenc.encode(a, 0, i, bt);
aoqi@0:                 int l = Math.min(i, j);
aoqi@0:                 if (result != l) {
aoqi@0:                     failed = true;
aoqi@0:                     System.out.println("Failed: encode char[" + i + "] to byte[" + j + "]: result = " + result + ", expected " + l);
aoqi@0:                 }
aoqi@0:                 for (int k = 0; k < l; k++) {
aoqi@0:                     if (bt[k] != b[k]) {
aoqi@0:                         failed = true;
aoqi@0:                         System.out.println("Failed: encoded byte[" + k + "] (" + bt[k] + ") != " + b[k]);
aoqi@0:                     }
aoqi@0:                 }
aoqi@0:                 // very source's offset
aoqi@0:                 int sz = SIZE - i + 1;
aoqi@0:                 result = arrenc.encode(a, i-1, sz, bt);
aoqi@0:                 l = Math.min(sz, j);
aoqi@0:                 if (result != l) {
aoqi@0:                     failed = true;
aoqi@0:                     System.out.println("Failed: encode char[" + sz + "] to byte[" + j + "]: result = " + result + ", expected " + l);
aoqi@0:                 }
aoqi@0:                 for (int k = 0; k < l; k++) {
aoqi@0:                     if (bt[k] != b[i+k-1]) {
aoqi@0:                         failed = true;
aoqi@0:                         System.out.println("Failed: encoded byte[" + k + "] (" + bt[k] + ") != " + b[i+k-1]);
aoqi@0:                     }
aoqi@0:                 }
aoqi@0:             }
aoqi@0:         }
aoqi@0: 
aoqi@0:         // Test encoder with char > 0xFF
aoqi@0:         System.out.println("Testing big char");
aoqi@0: 
aoqi@0:         byte orig = (byte)'A';
aoqi@0:         bt = new byte[SIZE];
aoqi@0:         for (int i = 1; i <= SIZE; i++) {
aoqi@0:             for (int j = 0; j < i; j++) {
aoqi@0:                 a[j] += 0x100;
aoqi@0:                 // make sure to replace a different byte
aoqi@0:                 bt[j] = orig;
aoqi@0:                 result = arrenc.encode(a, 0, i, bt);
aoqi@0:                 if (result != i) {
aoqi@0:                     failed = true;
aoqi@0:                     System.out.println("Failed: encode char[" + i + "] to byte[" + i + "]: result = " + result + ", expected " + i);
aoqi@0:                 }
aoqi@0:                 if (bt[j] != repl) {
aoqi@0:                     failed = true;
aoqi@0:                     System.out.println("Failed: encoded replace byte[" + j + "] (" + bt[j] + ") != " + repl);
aoqi@0:                 }
aoqi@0:                 bt[j] = b[j]; // Restore to compare whole array
aoqi@0:                 for (int k = 0; k < i; k++) {
aoqi@0:                     if (bt[k] != b[k]) {
aoqi@0:                         failed = true;
aoqi@0:                         System.out.println("Failed: encoded byte[" + k + "] (" + bt[k] + ") != " + b[k]);
aoqi@0:                     }
aoqi@0:                 }
aoqi@0:                 a[j] -= 0x100; // Restore
aoqi@0:             }
aoqi@0:         }
aoqi@0: 
aoqi@0:         // Test sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() performance.
aoqi@0: 
aoqi@0:         int itrs = Integer.getInteger("iterations", 1000000);
aoqi@0:         int size = Integer.getInteger("size", 256);
aoqi@0:         a  = new char[size];
aoqi@0:         b  = new byte[size];
aoqi@0:         bt = new byte[size];
aoqi@0:         for (int i = 0; i < size; i++) {
aoqi@0:             char c = (char) rnd.nextInt(maxchar);
aoqi@0:             if (!enc.canEncode(c)) {
aoqi@0:                 System.out.printf("Something wrong: can't encode c=%03x\n", (int)c);
aoqi@0:                 System.exit(97);
aoqi@0:             }
aoqi@0:             a[i] = c;
aoqi@0:             b[i]  = (byte)-1;
aoqi@0:             bt[i] = (byte)c;
aoqi@0:         }
aoqi@0:         ba = CharBuffer.wrap(a);
aoqi@0:         bb = ByteBuffer.wrap(b);
aoqi@0:         boolean enc_res = enc.encode(ba, bb, true).isUnderflow();
aoqi@0:         if (!enc_res || !Arrays.equals(b, bt)) {
aoqi@0:             failed = true;
aoqi@0:             System.out.println("Failed 1: Encoder.encode char[" + size + "]");
aoqi@0:         }
aoqi@0:         for (int i = 0; i < size; i++) {
aoqi@0:             b[i] = (byte)-1;
aoqi@0:         }
aoqi@0: 
aoqi@0:         // Make sure to recompile method if needed before performance run.
aoqi@0:         for (int i = 0; i < 10000; i++) {
aoqi@0:             ba.clear(); bb.clear();
aoqi@0:             enc_res = enc_res && enc.encode(ba, bb, true).isUnderflow();
aoqi@0:         }
aoqi@0:         for (int i = 0; i < size; i++) {
aoqi@0:             b[i] = (byte)-1;
aoqi@0:         }
aoqi@0:         for (int i = 0; i < 10000; i++) {
aoqi@0:             ba.clear(); bb.clear();
aoqi@0:             enc_res = enc_res && enc.encode(ba, bb, true).isUnderflow();
aoqi@0:         }
aoqi@0:         if (!enc_res || !Arrays.equals(b, bt)) {
aoqi@0:             failed = true;
aoqi@0:             System.out.println("Failed 2: Encoder.encode char[" + size + "]");
aoqi@0:         }
aoqi@0:         for (int i = 0; i < size; i++) {
aoqi@0:             b[i] = (byte)-1;
aoqi@0:         }
aoqi@0: 
aoqi@0:         System.out.println("Testing ISO_8859_1$Encode.encodeArrayLoop() performance");
aoqi@0:         long start = System.currentTimeMillis();
aoqi@0:         for (int i = 0; i < itrs; i++) {
aoqi@0:             ba.clear(); bb.clear();
aoqi@0:             enc_res = enc_res && enc.encode(ba, bb, true).isUnderflow();
aoqi@0:         }
aoqi@0:         long end = System.currentTimeMillis();
aoqi@0:         if (!enc_res || !Arrays.equals(b, bt)) {
aoqi@0:             failed = true;
aoqi@0:             System.out.println("Failed 3: Encoder.encode char[" + size + "]");
aoqi@0:         } else {
aoqi@0:             System.out.println("size: " + size + " time: " + (end - start));
aoqi@0:         }
aoqi@0: 
aoqi@0:         // Test sun.nio.cs.ISO_8859_1$Encode.encode() performance.
aoqi@0: 
aoqi@0:         // Make sure to recompile method if needed before performance run.
aoqi@0:         result = 0;
aoqi@0:         for (int i = 0; i < size; i++) {
aoqi@0:             b[i] = (byte)-1;
aoqi@0:         }
aoqi@0:         for (int i = 0; i < 10000; i++) {
aoqi@0:             result += arrenc.encode(a, 0, size, b);
aoqi@0:         }
aoqi@0:         for (int i = 0; i < size; i++) {
aoqi@0:             b[i] = (byte)-1;
aoqi@0:         }
aoqi@0:         for (int i = 0; i < 10000; i++) {
aoqi@0:             result += arrenc.encode(a, 0, size, b);
aoqi@0:         }
aoqi@0:         if (result != size*20000 || !Arrays.equals(b, bt)) {
aoqi@0:             failed = true;
aoqi@0:             System.out.println("Failed 1: ArrayEncoder.encode char[" + SIZE + "]");
aoqi@0:         }
aoqi@0:         for (int i = 0; i < size; i++) {
aoqi@0:             b[i] = (byte)-1;
aoqi@0:         }
aoqi@0: 
aoqi@0:         System.out.println("Testing ISO_8859_1$Encode.encode() performance");
aoqi@0:         result = 0;
aoqi@0:         start = System.currentTimeMillis();
aoqi@0:         for (int i = 0; i < itrs; i++) {
aoqi@0:             result += arrenc.encode(a, 0, size, b);
aoqi@0:         }
aoqi@0:         end = System.currentTimeMillis();
aoqi@0:         if (!Arrays.equals(b, bt)) {
aoqi@0:             failed = true;
aoqi@0:             System.out.println("Failed 2: ArrayEncoder.encode char[" + size + "]");
aoqi@0:         } else {
aoqi@0:             System.out.println("size: " + size + " time: " + (end - start));
aoqi@0:         }
aoqi@0: 
aoqi@0:         if (failed) {
aoqi@0:           System.out.println("FAILED");
aoqi@0:           System.exit(97);
aoqi@0:         }
aoqi@0:         System.out.println("PASSED");
aoqi@0:     }
aoqi@0: }