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comparison: test/compiler/6896617/Test6896617.java

test/compiler/6896617/Test6896617.java

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1 /*
2 * Copyright (c) 2013, 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 * @run main/othervm/timeout=1200 -Xbatch -Xmx256m Test6896617
29 *
30 */
31
32 import java.util.*;
33 import java.nio.*;
34 import java.nio.charset.*;
35
36 public class Test6896617 {
37 final static int SIZE = 256;
38
39 public static void main(String[] args) {
40 String csn = "ISO-8859-1";
41 Charset cs = Charset.forName(csn);
42 CharsetEncoder enc = cs.newEncoder();
43 enc.onMalformedInput(CodingErrorAction.REPLACE)
44 .onUnmappableCharacter(CodingErrorAction.REPLACE);
45 CharsetDecoder dec = cs.newDecoder();
46 dec.onMalformedInput(CodingErrorAction.REPLACE)
47 .onUnmappableCharacter(CodingErrorAction.REPLACE);
48
49 byte repl = (byte)'?';
50 enc.replaceWith(new byte[] { repl });
51
52 // Use internal API for tests.
53 sun.nio.cs.ArrayEncoder arrenc = (sun.nio.cs.ArrayEncoder)enc;
54 sun.nio.cs.ArrayDecoder arrdec = (sun.nio.cs.ArrayDecoder)dec;
55
56 // Populate char[] with chars which can be encoded by ISO_8859_1 (<= 0xFF)
57 Random rnd = new Random(0);
58 int maxchar = 0xFF;
59 char[] a = new char[SIZE];
60 byte[] b = new byte[SIZE];
61 char[] at = new char[SIZE];
62 byte[] bt = new byte[SIZE];
63 for (int i = 0; i < SIZE; i++) {
64 char c = (char) rnd.nextInt(maxchar);
65 if (!enc.canEncode(c)) {
66 System.out.printf("Something wrong: can't encode c=%03x\n", (int)c);
67 System.exit(97);
68 }
69 a[i] = c;
70 b[i] = (byte)c;
71 at[i] = (char)-1;
72 bt[i] = (byte)-1;
73 }
74 if (arrenc.encode(a, 0, SIZE, bt) != SIZE || !Arrays.equals(b, bt)) {
75 System.out.println("Something wrong: ArrayEncoder.encode failed");
76 System.exit(97);
77 }
78 if (arrdec.decode(b, 0, SIZE, at) != SIZE || !Arrays.equals(a, at)) {
79 System.out.println("Something wrong: ArrayDecoder.decode failed");
80 System.exit(97);
81 }
82 for (int i = 0; i < SIZE; i++) {
83 at[i] = (char)-1;
84 bt[i] = (byte)-1;
85 }
86
87 ByteBuffer bb = ByteBuffer.wrap(b);
88 CharBuffer ba = CharBuffer.wrap(a);
89 ByteBuffer bbt = ByteBuffer.wrap(bt);
90 CharBuffer bat = CharBuffer.wrap(at);
91 if (!enc.encode(ba, bbt, true).isUnderflow() || !Arrays.equals(b, bt)) {
92 System.out.println("Something wrong: Encoder.encode failed");
93 System.exit(97);
94 }
95 if (!dec.decode(bb, bat, true).isUnderflow() || !Arrays.equals(a, at)) {
96 System.out.println("Something wrong: Decoder.decode failed");
97 System.exit(97);
98 }
99 for (int i = 0; i < SIZE; i++) {
100 at[i] = (char)-1;
101 bt[i] = (byte)-1;
102 }
103
104 // Warm up
105 boolean failed = false;
106 int result = 0;
107 for (int i = 0; i < 10000; i++) {
108 result += arrenc.encode(a, 0, SIZE, bt);
109 result -= arrdec.decode(b, 0, SIZE, at);
110 }
111 for (int i = 0; i < 10000; i++) {
112 result += arrenc.encode(a, 0, SIZE, bt);
113 result -= arrdec.decode(b, 0, SIZE, at);
114 }
115 for (int i = 0; i < 10000; i++) {
116 result += arrenc.encode(a, 0, SIZE, bt);
117 result -= arrdec.decode(b, 0, SIZE, at);
118 }
119 if (result != 0 || !Arrays.equals(b, bt) || !Arrays.equals(a, at)) {
120 failed = true;
121 System.out.println("Failed: ArrayEncoder.encode char[" + SIZE + "] and ArrayDecoder.decode byte[" + SIZE + "]");
122 }
123 for (int i = 0; i < SIZE; i++) {
124 at[i] = (char)-1;
125 bt[i] = (byte)-1;
126 }
127
128 boolean is_underflow = true;
129 for (int i = 0; i < 10000; i++) {
130 ba.clear(); bb.clear(); bat.clear(); bbt.clear();
131 boolean enc_res = enc.encode(ba, bbt, true).isUnderflow();
132 boolean dec_res = dec.decode(bb, bat, true).isUnderflow();
133 is_underflow = is_underflow && enc_res && dec_res;
134 }
135 for (int i = 0; i < SIZE; i++) {
136 at[i] = (char)-1;
137 bt[i] = (byte)-1;
138 }
139 for (int i = 0; i < 10000; i++) {
140 ba.clear(); bb.clear(); bat.clear(); bbt.clear();
141 boolean enc_res = enc.encode(ba, bbt, true).isUnderflow();
142 boolean dec_res = dec.decode(bb, bat, true).isUnderflow();
143 is_underflow = is_underflow && enc_res && dec_res;
144 }
145 for (int i = 0; i < SIZE; i++) {
146 at[i] = (char)-1;
147 bt[i] = (byte)-1;
148 }
149 for (int i = 0; i < 10000; i++) {
150 ba.clear(); bb.clear(); bat.clear(); bbt.clear();
151 boolean enc_res = enc.encode(ba, bbt, true).isUnderflow();
152 boolean dec_res = dec.decode(bb, bat, true).isUnderflow();
153 is_underflow = is_underflow && enc_res && dec_res;
154 }
155 if (!is_underflow || !Arrays.equals(b, bt) || !Arrays.equals(a, at)) {
156 failed = true;
157 System.out.println("Failed: Encoder.encode char[" + SIZE + "] and Decoder.decode byte[" + SIZE + "]");
158 }
159
160 // Test encoder with different source and destination sizes
161 System.out.println("Testing different source and destination sizes");
162 for (int i = 1; i <= SIZE; i++) {
163 for (int j = 1; j <= SIZE; j++) {
164 bt = new byte[j];
165 // very source's SIZE
166 result = arrenc.encode(a, 0, i, bt);
167 int l = Math.min(i, j);
168 if (result != l) {
169 failed = true;
170 System.out.println("Failed: encode char[" + i + "] to byte[" + j + "]: result = " + result + ", expected " + l);
171 }
172 for (int k = 0; k < l; k++) {
173 if (bt[k] != b[k]) {
174 failed = true;
175 System.out.println("Failed: encoded byte[" + k + "] (" + bt[k] + ") != " + b[k]);
176 }
177 }
178 // very source's offset
179 int sz = SIZE - i + 1;
180 result = arrenc.encode(a, i-1, sz, bt);
181 l = Math.min(sz, j);
182 if (result != l) {
183 failed = true;
184 System.out.println("Failed: encode char[" + sz + "] to byte[" + j + "]: result = " + result + ", expected " + l);
185 }
186 for (int k = 0; k < l; k++) {
187 if (bt[k] != b[i+k-1]) {
188 failed = true;
189 System.out.println("Failed: encoded byte[" + k + "] (" + bt[k] + ") != " + b[i+k-1]);
190 }
191 }
192 }
193 }
194
195 // Test encoder with char > 0xFF
196 System.out.println("Testing big char");
197
198 byte orig = (byte)'A';
199 bt = new byte[SIZE];
200 for (int i = 1; i <= SIZE; i++) {
201 for (int j = 0; j < i; j++) {
202 a[j] += 0x100;
203 // make sure to replace a different byte
204 bt[j] = orig;
205 result = arrenc.encode(a, 0, i, bt);
206 if (result != i) {
207 failed = true;
208 System.out.println("Failed: encode char[" + i + "] to byte[" + i + "]: result = " + result + ", expected " + i);
209 }
210 if (bt[j] != repl) {
211 failed = true;
212 System.out.println("Failed: encoded replace byte[" + j + "] (" + bt[j] + ") != " + repl);
213 }
214 bt[j] = b[j]; // Restore to compare whole array
215 for (int k = 0; k < i; k++) {
216 if (bt[k] != b[k]) {
217 failed = true;
218 System.out.println("Failed: encoded byte[" + k + "] (" + bt[k] + ") != " + b[k]);
219 }
220 }
221 a[j] -= 0x100; // Restore
222 }
223 }
224
225 // Test sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() performance.
226
227 int itrs = Integer.getInteger("iterations", 1000000);
228 int size = Integer.getInteger("size", 256);
229 a = new char[size];
230 b = new byte[size];
231 bt = new byte[size];
232 for (int i = 0; i < size; i++) {
233 char c = (char) rnd.nextInt(maxchar);
234 if (!enc.canEncode(c)) {
235 System.out.printf("Something wrong: can't encode c=%03x\n", (int)c);
236 System.exit(97);
237 }
238 a[i] = c;
239 b[i] = (byte)-1;
240 bt[i] = (byte)c;
241 }
242 ba = CharBuffer.wrap(a);
243 bb = ByteBuffer.wrap(b);
244 boolean enc_res = enc.encode(ba, bb, true).isUnderflow();
245 if (!enc_res || !Arrays.equals(b, bt)) {
246 failed = true;
247 System.out.println("Failed 1: Encoder.encode char[" + size + "]");
248 }
249 for (int i = 0; i < size; i++) {
250 b[i] = (byte)-1;
251 }
252
253 // Make sure to recompile method if needed before performance run.
254 for (int i = 0; i < 10000; i++) {
255 ba.clear(); bb.clear();
256 enc_res = enc_res && enc.encode(ba, bb, true).isUnderflow();
257 }
258 for (int i = 0; i < size; i++) {
259 b[i] = (byte)-1;
260 }
261 for (int i = 0; i < 10000; i++) {
262 ba.clear(); bb.clear();
263 enc_res = enc_res && enc.encode(ba, bb, true).isUnderflow();
264 }
265 if (!enc_res || !Arrays.equals(b, bt)) {
266 failed = true;
267 System.out.println("Failed 2: Encoder.encode char[" + size + "]");
268 }
269 for (int i = 0; i < size; i++) {
270 b[i] = (byte)-1;
271 }
272
273 System.out.println("Testing ISO_8859_1$Encode.encodeArrayLoop() performance");
274 long start = System.currentTimeMillis();
275 for (int i = 0; i < itrs; i++) {
276 ba.clear(); bb.clear();
277 enc_res = enc_res && enc.encode(ba, bb, true).isUnderflow();
278 }
279 long end = System.currentTimeMillis();
280 if (!enc_res || !Arrays.equals(b, bt)) {
281 failed = true;
282 System.out.println("Failed 3: Encoder.encode char[" + size + "]");
283 } else {
284 System.out.println("size: " + size + " time: " + (end - start));
285 }
286
287 // Test sun.nio.cs.ISO_8859_1$Encode.encode() performance.
288
289 // Make sure to recompile method if needed before performance run.
290 result = 0;
291 for (int i = 0; i < size; i++) {
292 b[i] = (byte)-1;
293 }
294 for (int i = 0; i < 10000; i++) {
295 result += arrenc.encode(a, 0, size, b);
296 }
297 for (int i = 0; i < size; i++) {
298 b[i] = (byte)-1;
299 }
300 for (int i = 0; i < 10000; i++) {
301 result += arrenc.encode(a, 0, size, b);
302 }
303 if (result != size*20000 || !Arrays.equals(b, bt)) {
304 failed = true;
305 System.out.println("Failed 1: ArrayEncoder.encode char[" + SIZE + "]");
306 }
307 for (int i = 0; i < size; i++) {
308 b[i] = (byte)-1;
309 }
310
311 System.out.println("Testing ISO_8859_1$Encode.encode() performance");
312 result = 0;
313 start = System.currentTimeMillis();
314 for (int i = 0; i < itrs; i++) {
315 result += arrenc.encode(a, 0, size, b);
316 }
317 end = System.currentTimeMillis();
318 if (!Arrays.equals(b, bt)) {
319 failed = true;
320 System.out.println("Failed 2: ArrayEncoder.encode char[" + size + "]");
321 } else {
322 System.out.println("size: " + size + " time: " + (end - start));
323 }
324
325 if (failed) {
326 System.out.println("FAILED");
327 System.exit(97);
328 }
329 System.out.println("PASSED");
330 }
331 }

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