1 /*
2 * Copyright (c) 2015, 2018, 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 import org.testng.annotations.BeforeClass;
25 import org.testng.annotations.DataProvider;
26
27 import java.lang.invoke.VarHandle;
28 import java.nio.ByteBuffer;
29 import java.nio.ByteOrder;
30 import java.util.ArrayList;
31 import java.util.Arrays;
32 import java.util.EnumSet;
33 import java.util.List;
34 import java.util.function.Function;
35
36 public abstract class VarHandleBaseByteArrayTest extends VarHandleBaseTest {
37
38 enum MemoryMode {
39 ALIGNED(0, false), UNALIGNED(0, true),
40 BIG_ENDIAN(1, false), LITTLE_ENDIAN(1, true),
41 READ_WRITE(2, false), READ_ONLY(2, true),;
42
43 final int bit;
44 final int value;
45
46 MemoryMode(int bit, boolean value) {
47 this.bit = bit;
48 this.value = value ? 1 << bit : 0;
49 }
50
51 boolean isSet(int bitSet) {
52 return (bitSet & (1 << bit)) == value;
53 }
54
55 static int bitSet(MemoryMode... modes) {
56 if (modes == null) return 0;
57
58 int set = 0;
59 for (MemoryMode m : modes) {
60 set = (set & ~(1 << m.bit)) | m.value;
61 }
62 return set;
63 }
64
65 static EnumSet<MemoryMode> enumSet(int bitSet) {
66 EnumSet<MemoryMode> es = EnumSet.noneOf(MemoryMode.class);
67 for (MemoryMode m : values()) {
68 if (m.isSet(bitSet)) {
69 es.add(m);
70 }
71 }
72 return es;
73 }
74 }
75
76 static class Source<T> {
77 final T s;
78 final int memoryModes;
79
80 public Source(T s, MemoryMode... modes) {
81 this.s = s;
82 memoryModes = MemoryMode.bitSet(modes);
83 }
84
85 @Override
86 public String toString() {
87 return s.getClass().getCanonicalName() + " " + MemoryMode.enumSet(memoryModes);
88 }
89 }
90
91 static abstract class ByteArrayViewSource<T> extends Source<T> {
92 public ByteArrayViewSource(T t, MemoryMode... modes) {
93 super(t, modes);
94 }
95
96 abstract void fill(byte value);
97
98 abstract void fill(byte[] values);
99 }
100
101 static class ByteArraySource extends ByteArrayViewSource<byte[]> {
102 public ByteArraySource(byte[] bytes, MemoryMode... modes) {
103 super(bytes, modes);
104 }
105
106 void fill(byte value) {
107 Arrays.fill(s, value);
108 }
109
110 void fill(byte[] values) {
111 for (int i = 0; i < s.length; i++) {
112 s[i] = values[i % values.length];
113 }
114 }
115 }
116
117 static class ByteBufferSource extends ByteArrayViewSource<ByteBuffer> {
118 public ByteBufferSource(ByteBuffer buffer, MemoryMode... modes) {
119 super(buffer, modes);
120 }
121
122 void fill(byte value) {
123 for (int i = 0; i < s.limit(); i++) {
124 s.put(i, value);
125 }
126 }
127
128 void fill(byte[] values) {
129 for (int i = 0; i < s.limit(); i++) {
130 s.put(i, values[i % values.length]);
131 }
132 }
133
134 @Override
135 public String toString() {
136 return s + " " + MemoryMode.enumSet(memoryModes);
137 }
138 }
139
140 static class ByteBufferReadOnlySource extends ByteBufferSource {
141 final ByteBuffer rwSource;
142
143 public ByteBufferReadOnlySource(ByteBuffer roBuffer, ByteBuffer rwSource, MemoryMode... modes) {
144 super(roBuffer, modes);
145 this.rwSource = rwSource;
146 }
147
148 void fill(byte value) {
149 for (int i = 0; i < rwSource.limit(); i++) {
150 rwSource.put(i, value);
151 }
152 }
153
154 void fill(byte[] values) {
155 for (int i = 0; i < rwSource.limit(); i++) {
156 rwSource.put(i, values[i % values.length]);
157 }
158 }
159 }
160
161 static class VarHandleSource extends Source<VarHandle> {
162 final boolean supportsAtomicAccess;
163
164 VarHandleSource(VarHandle vh, boolean supportsAtomicAccess, MemoryMode... modes) {
165 super(vh, modes);
166 this.supportsAtomicAccess = supportsAtomicAccess;
167 }
168
169 boolean matches(ByteArrayViewSource<?> bav) {
170 return s.coordinateTypes().get(0).isAssignableFrom(bav.s.getClass());
171 }
172
173 @Override
174 public String toString() {
175 return " VarHandle " + MemoryMode.enumSet(memoryModes);
176 }
177 }
178
179 static class VarHandleSourceAccessTestCase extends AccessTestCase<VarHandleSource> {
180 final ByteArrayViewSource<?> bs;
181 final VarHandleSource vhs;
182
183 VarHandleSourceAccessTestCase(String desc, ByteArrayViewSource<?> bs, VarHandleSource vhs, AccessTestAction<VarHandleSource> ata) {
184 this(desc, bs, vhs, ata, true);
185 }
186
187 VarHandleSourceAccessTestCase(String desc, ByteArrayViewSource<?> bs, VarHandleSource vhs, AccessTestAction<VarHandleSource> ata, boolean loop) {
188 super(vhs + " -> " + bs + " " + desc, ata, loop);
189 this.bs = bs;
190 this.vhs = vhs;
191 }
192
193 @Override
194 VarHandleSource get() {
195 return vhs;
196 }
197 }
198
199
200 static double rotateLeft(double i, int distance) {
201 return Double.longBitsToDouble(
202 Long.rotateLeft(Double.doubleToRawLongBits(i), distance));
203 }
204
205 static double rotateRight(double i, int distance) {
206 return Double.longBitsToDouble(
207 Long.rotateRight(Double.doubleToRawLongBits(i), distance));
208 }
209
210 static float rotateLeft(float i, int distance) {
211 return Float.intBitsToFloat(
212 Integer.rotateLeft(Float.floatToRawIntBits(i), distance));
213 }
214
215 static float rotateRight(float i, int distance) {
216 return Float.intBitsToFloat(
217 Integer.rotateRight(Float.floatToRawIntBits(i), distance));
218 }
219
220 static long rotateLeft(long i, int distance) {
221 return Long.rotateLeft(i, distance);
222 }
223
224 static long rotateRight(long i, int distance) {
225 return Long.rotateRight(i, distance);
226 }
227
228 static int rotateLeft(int i, int distance) {
229 return Integer.rotateLeft(i, distance);
230 }
231
232 static int rotateRight(int i, int distance) {
233 return Integer.rotateRight(i, distance);
234 }
235
236 static short rotateLeft(short i, int distance) {
237 int v = (i << 16) | i;
238 v = Integer.rotateLeft(v, distance);
239 return (short) v;
240 }
241
242 static short rotateRight(short i, int distance) {
243 int v = (i << 16) | i;
244 v = Integer.rotateRight(v, distance);
245 return (short) v;
246 }
247
248 static char rotateLeft(char i, int distance) {
249 int v = (i << 16) | i;
250 v = Integer.rotateLeft(v, distance);
251 return (char) v;
252 }
253
254 static char rotateRight(char i, int distance) {
255 int v = (i << 16) | i;
256 v = Integer.rotateRight(v, distance);
257 return (char) v;
258 }
259
260 static final int LENGTH_BYTES = 32;
261
262 byte[] array;
263
264 List<ByteArrayViewSource<?>> bavss;
265
266 List<VarHandleSource> vhss;
267
268 public void setupByteSources() {
269 array = new byte[LENGTH_BYTES];
270
271 // Native endianess
272 MemoryMode ne = ByteOrder.nativeOrder() == ByteOrder.BIG_ENDIAN
273 ? MemoryMode.BIG_ENDIAN : MemoryMode.LITTLE_ENDIAN;
274
275 bavss = new ArrayList<>();
276
277 // byte[] source
278 ByteArraySource a =
279 new ByteArraySource(array,
280 ne, MemoryMode.READ_WRITE);
281 bavss.add(a);
282
283
284 // Combinations of ByteBuffer sources
285 ByteBufferSource hbb =
286 new ByteBufferSource(ByteBuffer.wrap(array),
287 MemoryMode.ALIGNED, ne, MemoryMode.READ_WRITE);
288 bavss.add(hbb);
289 ByteBufferReadOnlySource hbb_ro =
290 new ByteBufferReadOnlySource(hbb.s.asReadOnlyBuffer(), hbb.s,
291 MemoryMode.ALIGNED, ne, MemoryMode.READ_ONLY);
292 bavss.add(hbb_ro);
293
294 ByteBufferSource hbb_offset_aligned =
295 new ByteBufferSource(ByteBuffer.wrap(array, array.length / 4, array.length / 2).slice(),
296 MemoryMode.ALIGNED, ne, MemoryMode.READ_WRITE);
297 bavss.add(hbb_offset_aligned);
298 ByteBufferReadOnlySource hbb_offset_aligned_ro =
299 new ByteBufferReadOnlySource(hbb_offset_aligned.s.asReadOnlyBuffer(), hbb_offset_aligned.s,
300 MemoryMode.ALIGNED, ne, MemoryMode.READ_ONLY);
301 bavss.add(hbb_offset_aligned_ro);
302
303 ByteBufferSource hbb_offset_unaligned =
304 new ByteBufferSource(ByteBuffer.wrap(array, array.length / 4 - 1, array.length / 2).slice(),
305 MemoryMode.UNALIGNED, ne, MemoryMode.READ_WRITE);
306 bavss.add(hbb_offset_unaligned);
307 ByteBufferReadOnlySource hbb_offset_unaligned_ro =
308 new ByteBufferReadOnlySource(hbb_offset_unaligned.s.asReadOnlyBuffer(), hbb_offset_unaligned.s,
309 MemoryMode.UNALIGNED, ne, MemoryMode.READ_ONLY);
310 bavss.add(hbb_offset_unaligned_ro);
311
312
313 ByteBufferSource dbb =
314 new ByteBufferSource(ByteBuffer.allocateDirect(array.length),
315 MemoryMode.ALIGNED, ne, MemoryMode.READ_WRITE);
316 bavss.add(dbb);
317 ByteBufferReadOnlySource dbb_ro =
318 new ByteBufferReadOnlySource(dbb.s.asReadOnlyBuffer(), dbb.s,
319 MemoryMode.ALIGNED, ne, MemoryMode.READ_ONLY);
320 bavss.add(dbb_ro);
321
322 ByteBufferSource dbb_offset_aligned =
323 new ByteBufferSource(dbb.s.slice().position(array.length / 4).limit(array.length / 4 + array.length / 2).slice(),
324 MemoryMode.ALIGNED, ne, MemoryMode.READ_WRITE);
325 bavss.add(dbb_offset_aligned);
326 ByteBufferReadOnlySource dbb_offset_aligned_ro =
327 new ByteBufferReadOnlySource(dbb_offset_aligned.s.asReadOnlyBuffer(), dbb_offset_aligned.s,
328 MemoryMode.ALIGNED, ne, MemoryMode.READ_ONLY);
329 bavss.add(dbb_offset_aligned_ro);
330
331 ByteBufferSource dbb_offset_unaligned =
332 new ByteBufferSource(dbb.s.slice().position(array.length / 4 - 1).limit(array.length / 4 - 1 + array.length / 2).slice(),
333 MemoryMode.UNALIGNED, ne, MemoryMode.READ_WRITE);
334 bavss.add(dbb_offset_unaligned);
335 ByteBufferReadOnlySource dbb_offset_unaligned_ro =
336 new ByteBufferReadOnlySource(dbb_offset_unaligned.s.asReadOnlyBuffer(), dbb_offset_unaligned.s,
337 MemoryMode.UNALIGNED, ne, MemoryMode.READ_ONLY);
338 bavss.add(dbb_offset_unaligned_ro);
339 }
340
341 @BeforeClass
342 public void setup() {
343 setupByteSources();
344 vhss = setupVarHandleSources(true);
345 }
346
347 abstract List<VarHandleSource> setupVarHandleSources(boolean same);
348
349
350 @DataProvider
351 public Object[][] varHandlesProvider() throws Exception {
352 return vhss.stream().map(cvh -> new Object[]{cvh}).toArray(Object[][]::new);
353 }
354
355 @DataProvider
356 public Object[][] typesProvider() throws Exception {
357 List<java.lang.Class<?>> aepts = Arrays.asList(byte[].class, int.class);
358 List<java.lang.Class<?>> bbpts = Arrays.asList(ByteBuffer.class, int.class);
359
360 Function<VarHandle, List<Class<?>>> vhToPts = vh ->
361 vh.coordinateTypes().get(0) == byte[].class ? aepts : bbpts;
362
363 return vhss.stream().map(vh -> new Object[]{vh.s, vhToPts.apply(vh.s)}).toArray(Object[][]::new);
364 }
365 }