1 /*
2 * Copyright (c) 2013, 2015, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24 /*
25 * @test
26 * @bug 6896617
27 * @summary Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() with SSE instructions on x86
28 * @library /testlibrary
29 * @modules java.base/jdk.internal.misc
30 * java.base/sun.nio.cs
31 * java.management
32 *
33 * @run main/othervm/timeout=1200 -Xbatch -Xmx256m compiler.codegen.Test6896617
34 */
35
36 package compiler.codegen;
37
38 import jdk.test.lib.Utils;
39
40 import java.nio.ByteBuffer;
41 import java.nio.CharBuffer;
42 import java.nio.charset.Charset;
43 import java.nio.charset.CharsetDecoder;
44 import java.nio.charset.CharsetEncoder;
45 import java.nio.charset.CodingErrorAction;
46 import java.util.Arrays;
47 import java.util.Random;
48
49 public class Test6896617 {
50 final static int SIZE = 256;
51
52 public static void main(String[] args) {
53 String csn = "ISO-8859-1";
54 Charset cs = Charset.forName(csn);
55 CharsetEncoder enc = cs.newEncoder();
56 enc.onMalformedInput(CodingErrorAction.REPLACE)
57 .onUnmappableCharacter(CodingErrorAction.REPLACE);
58 CharsetDecoder dec = cs.newDecoder();
59 dec.onMalformedInput(CodingErrorAction.REPLACE)
60 .onUnmappableCharacter(CodingErrorAction.REPLACE);
61
62 byte repl = (byte)'?';
63 enc.replaceWith(new byte[] { repl });
64
65 // Use internal API for tests.
66 sun.nio.cs.ArrayEncoder arrenc = (sun.nio.cs.ArrayEncoder)enc;
67 sun.nio.cs.ArrayDecoder arrdec = (sun.nio.cs.ArrayDecoder)dec;
68
69 // Populate char[] with chars which can be encoded by ISO_8859_1 (<= 0xFF)
70 Random rnd = Utils.getRandomInstance();
71 int maxchar = 0xFF;
72 char[] a = new char[SIZE];
73 byte[] b = new byte[SIZE];
74 char[] at = new char[SIZE];
75 byte[] bt = new byte[SIZE];
76 for (int i = 0; i < SIZE; i++) {
77 char c = (char) rnd.nextInt(maxchar);
78 if (!enc.canEncode(c)) {
79 System.out.printf("Something wrong: can't encode c=%03x\n", (int)c);
80 System.exit(97);
81 }
82 a[i] = c;
83 b[i] = (byte)c;
84 at[i] = (char)-1;
85 bt[i] = (byte)-1;
86 }
87 if (arrenc.encode(a, 0, SIZE, bt) != SIZE || !Arrays.equals(b, bt)) {
88 System.out.println("Something wrong: ArrayEncoder.encode failed");
89 System.exit(97);
90 }
91 if (arrdec.decode(b, 0, SIZE, at) != SIZE || !Arrays.equals(a, at)) {
92 System.out.println("Something wrong: ArrayDecoder.decode failed");
93 System.exit(97);
94 }
95 for (int i = 0; i < SIZE; i++) {
96 at[i] = (char)-1;
97 bt[i] = (byte)-1;
98 }
99
100 ByteBuffer bb = ByteBuffer.wrap(b);
101 CharBuffer ba = CharBuffer.wrap(a);
102 ByteBuffer bbt = ByteBuffer.wrap(bt);
103 CharBuffer bat = CharBuffer.wrap(at);
104 if (!enc.encode(ba, bbt, true).isUnderflow() || !Arrays.equals(b, bt)) {
105 System.out.println("Something wrong: Encoder.encode failed");
106 System.exit(97);
107 }
108 if (!dec.decode(bb, bat, true).isUnderflow() || !Arrays.equals(a, at)) {
109 System.out.println("Something wrong: Decoder.decode failed");
110 System.exit(97);
111 }
112 for (int i = 0; i < SIZE; i++) {
113 at[i] = (char)-1;
114 bt[i] = (byte)-1;
115 }
116
117 // Warm up
118 boolean failed = false;
119 int result = 0;
120 for (int i = 0; i < 10000; i++) {
121 result += arrenc.encode(a, 0, SIZE, bt);
122 result -= arrdec.decode(b, 0, SIZE, at);
123 }
124 for (int i = 0; i < 10000; i++) {
125 result += arrenc.encode(a, 0, SIZE, bt);
126 result -= arrdec.decode(b, 0, SIZE, at);
127 }
128 for (int i = 0; i < 10000; i++) {
129 result += arrenc.encode(a, 0, SIZE, bt);
130 result -= arrdec.decode(b, 0, SIZE, at);
131 }
132 if (result != 0 || !Arrays.equals(b, bt) || !Arrays.equals(a, at)) {
133 failed = true;
134 System.out.println("Failed: ArrayEncoder.encode char[" + SIZE + "] and ArrayDecoder.decode byte[" + SIZE + "]");
135 }
136 for (int i = 0; i < SIZE; i++) {
137 at[i] = (char)-1;
138 bt[i] = (byte)-1;
139 }
140
141 boolean is_underflow = true;
142 for (int i = 0; i < 10000; i++) {
143 ba.clear(); bb.clear(); bat.clear(); bbt.clear();
144 boolean enc_res = enc.encode(ba, bbt, true).isUnderflow();
145 boolean dec_res = dec.decode(bb, bat, true).isUnderflow();
146 is_underflow = is_underflow && enc_res && dec_res;
147 }
148 for (int i = 0; i < SIZE; i++) {
149 at[i] = (char)-1;
150 bt[i] = (byte)-1;
151 }
152 for (int i = 0; i < 10000; i++) {
153 ba.clear(); bb.clear(); bat.clear(); bbt.clear();
154 boolean enc_res = enc.encode(ba, bbt, true).isUnderflow();
155 boolean dec_res = dec.decode(bb, bat, true).isUnderflow();
156 is_underflow = is_underflow && enc_res && dec_res;
157 }
158 for (int i = 0; i < SIZE; i++) {
159 at[i] = (char)-1;
160 bt[i] = (byte)-1;
161 }
162 for (int i = 0; i < 10000; i++) {
163 ba.clear(); bb.clear(); bat.clear(); bbt.clear();
164 boolean enc_res = enc.encode(ba, bbt, true).isUnderflow();
165 boolean dec_res = dec.decode(bb, bat, true).isUnderflow();
166 is_underflow = is_underflow && enc_res && dec_res;
167 }
168 if (!is_underflow || !Arrays.equals(b, bt) || !Arrays.equals(a, at)) {
169 failed = true;
170 System.out.println("Failed: Encoder.encode char[" + SIZE + "] and Decoder.decode byte[" + SIZE + "]");
171 }
172
173 // Test encoder with different source and destination sizes
174 System.out.println("Testing different source and destination sizes");
175 for (int i = 1; i <= SIZE; i++) {
176 for (int j = 1; j <= SIZE; j++) {
177 bt = new byte[j];
178 // very source's SIZE
179 result = arrenc.encode(a, 0, i, bt);
180 int l = Math.min(i, j);
181 if (result != l) {
182 failed = true;
183 System.out.println("Failed: encode char[" + i + "] to byte[" + j + "]: result = " + result + ", expected " + l);
184 }
185 for (int k = 0; k < l; k++) {
186 if (bt[k] != b[k]) {
187 failed = true;
188 System.out.println("Failed: encoded byte[" + k + "] (" + bt[k] + ") != " + b[k]);
189 }
190 }
191 // very source's offset
192 int sz = SIZE - i + 1;
193 result = arrenc.encode(a, i-1, sz, bt);
194 l = Math.min(sz, j);
195 if (result != l) {
196 failed = true;
197 System.out.println("Failed: encode char[" + sz + "] to byte[" + j + "]: result = " + result + ", expected " + l);
198 }
199 for (int k = 0; k < l; k++) {
200 if (bt[k] != b[i+k-1]) {
201 failed = true;
202 System.out.println("Failed: encoded byte[" + k + "] (" + bt[k] + ") != " + b[i+k-1]);
203 }
204 }
205 }
206 }
207
208 // Test encoder with char > 0xFF
209 System.out.println("Testing big char");
210
211 byte orig = (byte)'A';
212 bt = new byte[SIZE];
213 for (int i = 1; i <= SIZE; i++) {
214 for (int j = 0; j < i; j++) {
215 a[j] += 0x100;
216 // make sure to replace a different byte
217 bt[j] = orig;
218 result = arrenc.encode(a, 0, i, bt);
219 if (result != i) {
220 failed = true;
221 System.out.println("Failed: encode char[" + i + "] to byte[" + i + "]: result = " + result + ", expected " + i);
222 }
223 if (bt[j] != repl) {
224 failed = true;
225 System.out.println("Failed: encoded replace byte[" + j + "] (" + bt[j] + ") != " + repl);
226 }
227 bt[j] = b[j]; // Restore to compare whole array
228 for (int k = 0; k < i; k++) {
229 if (bt[k] != b[k]) {
230 failed = true;
231 System.out.println("Failed: encoded byte[" + k + "] (" + bt[k] + ") != " + b[k]);
232 }
233 }
234 a[j] -= 0x100; // Restore
235 }
236 }
237
238 // Test sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() performance.
239
240 int itrs = Integer.getInteger("iterations", 1000000);
241 int size = Integer.getInteger("size", 256);
242 a = new char[size];
243 b = new byte[size];
244 bt = new byte[size];
245 for (int i = 0; i < size; i++) {
246 char c = (char) rnd.nextInt(maxchar);
247 if (!enc.canEncode(c)) {
248 System.out.printf("Something wrong: can't encode c=%03x\n", (int)c);
249 System.exit(97);
250 }
251 a[i] = c;
252 b[i] = (byte)-1;
253 bt[i] = (byte)c;
254 }
255 ba = CharBuffer.wrap(a);
256 bb = ByteBuffer.wrap(b);
257 boolean enc_res = enc.encode(ba, bb, true).isUnderflow();
258 if (!enc_res || !Arrays.equals(b, bt)) {
259 failed = true;
260 System.out.println("Failed 1: Encoder.encode char[" + size + "]");
261 }
262 for (int i = 0; i < size; i++) {
263 b[i] = (byte)-1;
264 }
265
266 // Make sure to recompile method if needed before performance run.
267 for (int i = 0; i < 10000; i++) {
268 ba.clear(); bb.clear();
269 enc_res = enc_res && enc.encode(ba, bb, true).isUnderflow();
270 }
271 for (int i = 0; i < size; i++) {
272 b[i] = (byte)-1;
273 }
274 for (int i = 0; i < 10000; i++) {
275 ba.clear(); bb.clear();
276 enc_res = enc_res && enc.encode(ba, bb, true).isUnderflow();
277 }
278 if (!enc_res || !Arrays.equals(b, bt)) {
279 failed = true;
280 System.out.println("Failed 2: Encoder.encode char[" + size + "]");
281 }
282 for (int i = 0; i < size; i++) {
283 b[i] = (byte)-1;
284 }
285
286 System.out.println("Testing ISO_8859_1$Encode.encodeArrayLoop() performance");
287 long start = System.currentTimeMillis();
288 for (int i = 0; i < itrs; i++) {
289 ba.clear(); bb.clear();
290 enc_res = enc_res && enc.encode(ba, bb, true).isUnderflow();
291 }
292 long end = System.currentTimeMillis();
293 if (!enc_res || !Arrays.equals(b, bt)) {
294 failed = true;
295 System.out.println("Failed 3: Encoder.encode char[" + size + "]");
296 } else {
297 System.out.println("size: " + size + " time: " + (end - start));
298 }
299
300 // Test sun.nio.cs.ISO_8859_1$Encode.encode() performance.
301
302 // Make sure to recompile method if needed before performance run.
303 result = 0;
304 for (int i = 0; i < size; i++) {
305 b[i] = (byte)-1;
306 }
307 for (int i = 0; i < 10000; i++) {
308 result += arrenc.encode(a, 0, size, b);
309 }
310 for (int i = 0; i < size; i++) {
311 b[i] = (byte)-1;
312 }
313 for (int i = 0; i < 10000; i++) {
314 result += arrenc.encode(a, 0, size, b);
315 }
316 if (result != size*20000 || !Arrays.equals(b, bt)) {
317 failed = true;
318 System.out.println("Failed 1: ArrayEncoder.encode char[" + SIZE + "]");
319 }
320 for (int i = 0; i < size; i++) {
321 b[i] = (byte)-1;
322 }
323
324 System.out.println("Testing ISO_8859_1$Encode.encode() performance");
325 result = 0;
326 start = System.currentTimeMillis();
327 for (int i = 0; i < itrs; i++) {
328 result += arrenc.encode(a, 0, size, b);
329 }
330 end = System.currentTimeMillis();
331 if (!Arrays.equals(b, bt)) {
332 failed = true;
333 System.out.println("Failed 2: ArrayEncoder.encode char[" + size + "]");
334 } else {
335 System.out.println("size: " + size + " time: " + (end - start));
336 }
337
338 if (failed) {
339 System.out.println("FAILED");
340 System.exit(97);
341 }
342 System.out.println("PASSED");
343 }
344 }