Mercurial > hg > truffle
comparison test/compiler/stable/TestStableChar.java @ 14671:77ca9a58fbe8
Merge
author | anoll |
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date | Tue, 04 Mar 2014 21:15:33 -0800 |
parents | aed8e1fe80eb |
children | ee1c924763d2 |
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14670:27689a7550a8 | 14671:77ca9a58fbe8 |
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1 /* | |
2 * Copyright (c) 2014, 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. Oracle designates this | |
8 * particular file as subject to the "Classpath" exception as provided | |
9 * by Oracle in the LICENSE file that accompanied this code. | |
10 * | |
11 * This code is distributed in the hope that it will be useful, but WITHOUT | |
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
14 * version 2 for more details (a copy is included in the LICENSE file that | |
15 * accompanied this code). | |
16 * | |
17 * You should have received a copy of the GNU General Public License version | |
18 * 2 along with this work; if not, write to the Free Software Foundation, | |
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
20 * | |
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
22 * or visit www.oracle.com if you need additional information or have any | |
23 * questions. | |
24 */ | |
25 | |
26 /* | |
27 * @test TestStableChar | |
28 * @summary tests on stable fields and arrays | |
29 * @library /testlibrary | |
30 * @compile -XDignore.symbol.file TestStableChar.java | |
31 * @run main ClassFileInstaller | |
32 * java/lang/invoke/TestStableChar | |
33 * java/lang/invoke/TestStableChar$CharStable | |
34 * java/lang/invoke/TestStableChar$StaticCharStable | |
35 * java/lang/invoke/TestStableChar$VolatileCharStable | |
36 * java/lang/invoke/TestStableChar$CharArrayDim1 | |
37 * java/lang/invoke/TestStableChar$CharArrayDim2 | |
38 * java/lang/invoke/TestStableChar$CharArrayDim3 | |
39 * java/lang/invoke/TestStableChar$CharArrayDim4 | |
40 * java/lang/invoke/TestStableChar$ObjectArrayLowerDim0 | |
41 * java/lang/invoke/TestStableChar$ObjectArrayLowerDim1 | |
42 * java/lang/invoke/TestStableChar$NestedStableField | |
43 * java/lang/invoke/TestStableChar$NestedStableField$A | |
44 * java/lang/invoke/TestStableChar$NestedStableField1 | |
45 * java/lang/invoke/TestStableChar$NestedStableField1$A | |
46 * java/lang/invoke/TestStableChar$NestedStableField2 | |
47 * java/lang/invoke/TestStableChar$NestedStableField2$A | |
48 * java/lang/invoke/TestStableChar$NestedStableField3 | |
49 * java/lang/invoke/TestStableChar$NestedStableField3$A | |
50 * java/lang/invoke/TestStableChar$DefaultValue | |
51 * java/lang/invoke/TestStableChar$ObjectArrayLowerDim2 | |
52 * | |
53 * @run main/othervm -Xbootclasspath/a:. -XX:+IgnoreUnrecognizedVMOptions | |
54 * -XX:+UnlockDiagnosticVMOptions -XX:+FoldStableValues -XX:-UseCompressedOop | |
55 * -server -XX:-TieredCompilation -Xcomp | |
56 * -XX:CompileOnly=::get,::get1,::get2,::get3,::get4 | |
57 * java.lang.invoke.TestStableChar | |
58 * | |
59 * @run main/othervm -Xbootclasspath/a:. -XX:+IgnoreUnrecognizedVMOptions | |
60 * -XX:+UnlockDiagnosticVMOptions -XX:+FoldStableValues -XX:+UseCompressedOop | |
61 * -server -XX:-TieredCompilation -Xcomp | |
62 * -XX:CompileOnly=::get,::get1,::get2,::get3,::get4 | |
63 * java.lang.invoke.TestStableChar | |
64 * | |
65 * @run main/othervm -Xbootclasspath/a:. -XX:+IgnoreUnrecognizedVMOptions | |
66 * -XX:+UnlockDiagnosticVMOptions -XX:-FoldStableValues -XX:+UseCompressedOop | |
67 * -server -XX:-TieredCompilation -Xcomp | |
68 * -XX:CompileOnly=::get,::get1,::get2,::get3,::get4 | |
69 * java.lang.invoke.TestStableChar | |
70 * | |
71 * @run main/othervm -Xbootclasspath/a:. -XX:+IgnoreUnrecognizedVMOptions | |
72 * -XX:+UnlockDiagnosticVMOptions -XX:-FoldStableValues -XX:-UseCompressedOop | |
73 * -server -XX:-TieredCompilation -Xcomp | |
74 * -XX:CompileOnly=::get,::get1,::get2,::get3,::get4 | |
75 * java.lang.invoke.TestStableChar | |
76 */ | |
77 package java.lang.invoke; | |
78 | |
79 import com.sun.management.HotSpotDiagnosticMXBean; | |
80 import com.sun.management.VMOption; | |
81 import sun.management.ManagementFactoryHelper; | |
82 import java.lang.reflect.InvocationTargetException; | |
83 | |
84 public class TestStableChar { | |
85 public static void main(String[] args) throws Exception { | |
86 System.out.println("@Stable enabled: "+isStableEnabled); | |
87 System.out.println(); | |
88 | |
89 run(DefaultValue.class); | |
90 run(CharStable.class); | |
91 run(StaticCharStable.class); | |
92 run(VolatileCharStable.class); | |
93 | |
94 // @Stable arrays: Dim 1-4 | |
95 run(CharArrayDim1.class); | |
96 run(CharArrayDim2.class); | |
97 run(CharArrayDim3.class); | |
98 run(CharArrayDim4.class); | |
99 | |
100 // @Stable Object field: dynamic arrays | |
101 run(ObjectArrayLowerDim0.class); | |
102 run(ObjectArrayLowerDim1.class); | |
103 run(ObjectArrayLowerDim2.class); | |
104 | |
105 // Nested @Stable fields | |
106 run(NestedStableField.class); | |
107 run(NestedStableField1.class); | |
108 run(NestedStableField2.class); | |
109 run(NestedStableField3.class); | |
110 | |
111 if (failed) { | |
112 throw new Error("TEST FAILED"); | |
113 } | |
114 } | |
115 | |
116 /* ==================================================== */ | |
117 | |
118 static class DefaultValue { | |
119 public @Stable char v; | |
120 | |
121 public static final DefaultValue c = new DefaultValue(); | |
122 public static char get() { return c.v; } | |
123 public static void test() throws Exception { | |
124 char val1 = get(); | |
125 c.v = 'a'; char val2 = get(); | |
126 assertEquals(val1, 0); | |
127 assertEquals(val2, 'a'); | |
128 } | |
129 } | |
130 | |
131 /* ==================================================== */ | |
132 | |
133 static class CharStable { | |
134 public @Stable char v; | |
135 | |
136 public static final CharStable c = new CharStable(); | |
137 public static char get() { return c.v; } | |
138 public static void test() throws Exception { | |
139 c.v = 'a'; char val1 = get(); | |
140 c.v = 'b'; char val2 = get(); | |
141 assertEquals(val1, 'a'); | |
142 assertEquals(val2, (isStableEnabled ? 'a' : 'b')); | |
143 } | |
144 } | |
145 | |
146 /* ==================================================== */ | |
147 | |
148 static class StaticCharStable { | |
149 public @Stable char v; | |
150 | |
151 public static final StaticCharStable c = new StaticCharStable(); | |
152 public static char get() { return c.v; } | |
153 public static void test() throws Exception { | |
154 c.v = 'a'; char val1 = get(); | |
155 c.v = 'b'; char val2 = get(); | |
156 assertEquals(val1, 'a'); | |
157 assertEquals(val2, (isStableEnabled ? 'a' : 'b')); | |
158 } | |
159 } | |
160 | |
161 /* ==================================================== */ | |
162 | |
163 static class VolatileCharStable { | |
164 public @Stable volatile char v; | |
165 | |
166 public static final VolatileCharStable c = new VolatileCharStable(); | |
167 public static char get() { return c.v; } | |
168 public static void test() throws Exception { | |
169 c.v = 'a'; char val1 = get(); | |
170 c.v = 'b'; char val2 = get(); | |
171 assertEquals(val1, 'a'); | |
172 assertEquals(val2, (isStableEnabled ? 'a' : 'b')); | |
173 } | |
174 } | |
175 | |
176 /* ==================================================== */ | |
177 // @Stable array == field && all components are stable | |
178 | |
179 static class CharArrayDim1 { | |
180 public @Stable char[] v; | |
181 | |
182 public static final CharArrayDim1 c = new CharArrayDim1(); | |
183 public static char get() { return c.v[0]; } | |
184 public static char get1() { return c.v[10]; } | |
185 public static char[] get2() { return c.v; } | |
186 public static void test() throws Exception { | |
187 { | |
188 c.v = new char[1]; c.v[0] = 'a'; char val1 = get(); | |
189 c.v[0] = 'b'; char val2 = get(); | |
190 assertEquals(val1, 'a'); | |
191 assertEquals(val2, (isStableEnabled ? 'a' : 'b')); | |
192 | |
193 c.v = new char[1]; c.v[0] = 'c'; char val3 = get(); | |
194 assertEquals(val3, (isStableEnabled ? 'a' : 'c')); | |
195 } | |
196 | |
197 { | |
198 c.v = new char[20]; c.v[10] = 'a'; char val1 = get1(); | |
199 c.v[10] = 'b'; char val2 = get1(); | |
200 assertEquals(val1, 'a'); | |
201 assertEquals(val2, (isStableEnabled ? 'a' : 'b')); | |
202 | |
203 c.v = new char[20]; c.v[10] = 'c'; char val3 = get1(); | |
204 assertEquals(val3, (isStableEnabled ? 'a' : 'c')); | |
205 } | |
206 | |
207 { | |
208 c.v = new char[1]; char[] val1 = get2(); | |
209 c.v = new char[1]; char[] val2 = get2(); | |
210 assertTrue((isStableEnabled ? (val1 == val2) : (val1 != val2))); | |
211 } | |
212 } | |
213 } | |
214 | |
215 /* ==================================================== */ | |
216 | |
217 static class CharArrayDim2 { | |
218 public @Stable char[][] v; | |
219 | |
220 public static final CharArrayDim2 c = new CharArrayDim2(); | |
221 public static char get() { return c.v[0][0]; } | |
222 public static char[] get1() { return c.v[0]; } | |
223 public static char[][] get2() { return c.v; } | |
224 public static void test() throws Exception { | |
225 { | |
226 c.v = new char[1][1]; c.v[0][0] = 'a'; char val1 = get(); | |
227 c.v[0][0] = 'b'; char val2 = get(); | |
228 assertEquals(val1, 'a'); | |
229 assertEquals(val2, (isStableEnabled ? 'a' : 'b')); | |
230 | |
231 c.v = new char[1][1]; c.v[0][0] = 'c'; char val3 = get(); | |
232 assertEquals(val3, (isStableEnabled ? 'a' : 'c')); | |
233 | |
234 c.v[0] = new char[1]; c.v[0][0] = 'd'; char val4 = get(); | |
235 assertEquals(val4, (isStableEnabled ? 'a' : 'd')); | |
236 } | |
237 | |
238 { | |
239 c.v = new char[1][1]; char[] val1 = get1(); | |
240 c.v[0] = new char[1]; char[] val2 = get1(); | |
241 assertTrue((isStableEnabled ? (val1 == val2) : (val1 != val2))); | |
242 } | |
243 | |
244 { | |
245 c.v = new char[1][1]; char[][] val1 = get2(); | |
246 c.v = new char[1][1]; char[][] val2 = get2(); | |
247 assertTrue((isStableEnabled ? (val1 == val2) : (val1 != val2))); | |
248 } | |
249 } | |
250 } | |
251 | |
252 /* ==================================================== */ | |
253 | |
254 static class CharArrayDim3 { | |
255 public @Stable char[][][] v; | |
256 | |
257 public static final CharArrayDim3 c = new CharArrayDim3(); | |
258 public static char get() { return c.v[0][0][0]; } | |
259 public static char[] get1() { return c.v[0][0]; } | |
260 public static char[][] get2() { return c.v[0]; } | |
261 public static char[][][] get3() { return c.v; } | |
262 public static void test() throws Exception { | |
263 { | |
264 c.v = new char[1][1][1]; c.v[0][0][0] = 'a'; char val1 = get(); | |
265 c.v[0][0][0] = 'b'; char val2 = get(); | |
266 assertEquals(val1, 'a'); | |
267 assertEquals(val2, (isStableEnabled ? 'a' : 'b')); | |
268 | |
269 c.v = new char[1][1][1]; c.v[0][0][0] = 'c'; char val3 = get(); | |
270 assertEquals(val3, (isStableEnabled ? 'a' : 'c')); | |
271 | |
272 c.v[0] = new char[1][1]; c.v[0][0][0] = 'd'; char val4 = get(); | |
273 assertEquals(val4, (isStableEnabled ? 'a' : 'd')); | |
274 | |
275 c.v[0][0] = new char[1]; c.v[0][0][0] = 'e'; char val5 = get(); | |
276 assertEquals(val5, (isStableEnabled ? 'a' : 'e')); | |
277 } | |
278 | |
279 { | |
280 c.v = new char[1][1][1]; char[] val1 = get1(); | |
281 c.v[0][0] = new char[1]; char[] val2 = get1(); | |
282 assertTrue((isStableEnabled ? (val1 == val2) : (val1 != val2))); | |
283 } | |
284 | |
285 { | |
286 c.v = new char[1][1][1]; char[][] val1 = get2(); | |
287 c.v[0] = new char[1][1]; char[][] val2 = get2(); | |
288 assertTrue((isStableEnabled ? (val1 == val2) : (val1 != val2))); | |
289 } | |
290 | |
291 { | |
292 c.v = new char[1][1][1]; char[][][] val1 = get3(); | |
293 c.v = new char[1][1][1]; char[][][] val2 = get3(); | |
294 assertTrue((isStableEnabled ? (val1 == val2) : (val1 != val2))); | |
295 } | |
296 } | |
297 } | |
298 | |
299 /* ==================================================== */ | |
300 | |
301 static class CharArrayDim4 { | |
302 public @Stable char[][][][] v; | |
303 | |
304 public static final CharArrayDim4 c = new CharArrayDim4(); | |
305 public static char get() { return c.v[0][0][0][0]; } | |
306 public static char[] get1() { return c.v[0][0][0]; } | |
307 public static char[][] get2() { return c.v[0][0]; } | |
308 public static char[][][] get3() { return c.v[0]; } | |
309 public static char[][][][] get4() { return c.v; } | |
310 public static void test() throws Exception { | |
311 { | |
312 c.v = new char[1][1][1][1]; c.v[0][0][0][0] = 'a'; char val1 = get(); | |
313 c.v[0][0][0][0] = 'b'; char val2 = get(); | |
314 assertEquals(val1, 'a'); | |
315 assertEquals(val2, (isStableEnabled ? 'a' : 'b')); | |
316 | |
317 c.v = new char[1][1][1][1]; c.v[0][0][0][0] = 'c'; char val3 = get(); | |
318 assertEquals(val3, (isStableEnabled ? 'a' : 'c')); | |
319 | |
320 c.v[0] = new char[1][1][1]; c.v[0][0][0][0] = 'd'; char val4 = get(); | |
321 assertEquals(val4, (isStableEnabled ? 'a' : 'd')); | |
322 | |
323 c.v[0][0] = new char[1][1]; c.v[0][0][0][0] = 'e'; char val5 = get(); | |
324 assertEquals(val5, (isStableEnabled ? 'a' : 'e')); | |
325 | |
326 c.v[0][0][0] = new char[1]; c.v[0][0][0][0] = 'f'; char val6 = get(); | |
327 assertEquals(val6, (isStableEnabled ? 'a' : 'f')); | |
328 } | |
329 | |
330 { | |
331 c.v = new char[1][1][1][1]; char[] val1 = get1(); | |
332 c.v[0][0][0] = new char[1]; char[] val2 = get1(); | |
333 assertTrue((isStableEnabled ? (val1 == val2) : (val1 != val2))); | |
334 } | |
335 | |
336 { | |
337 c.v = new char[1][1][1][1]; char[][] val1 = get2(); | |
338 c.v[0][0] = new char[1][1]; char[][] val2 = get2(); | |
339 assertTrue((isStableEnabled ? (val1 == val2) : (val1 != val2))); | |
340 } | |
341 | |
342 { | |
343 c.v = new char[1][1][1][1]; char[][][] val1 = get3(); | |
344 c.v[0] = new char[1][1][1]; char[][][] val2 = get3(); | |
345 assertTrue((isStableEnabled ? (val1 == val2) : (val1 != val2))); | |
346 } | |
347 | |
348 { | |
349 c.v = new char[1][1][1][1]; char[][][][] val1 = get4(); | |
350 c.v = new char[1][1][1][1]; char[][][][] val2 = get4(); | |
351 assertTrue((isStableEnabled ? (val1 == val2) : (val1 != val2))); | |
352 } | |
353 | |
354 } | |
355 } | |
356 | |
357 /* ==================================================== */ | |
358 // Dynamic Dim is higher than static | |
359 static class ObjectArrayLowerDim0 { | |
360 public @Stable Object v; | |
361 | |
362 public static final ObjectArrayLowerDim0 c = new ObjectArrayLowerDim0(); | |
363 public static char get() { return ((char[])c.v)[0]; } | |
364 public static char[] get1() { return (char[])c.v; } | |
365 | |
366 public static void test() throws Exception { | |
367 { | |
368 c.v = new char[1]; ((char[])c.v)[0] = 'a'; char val1 = get(); | |
369 ((char[])c.v)[0] = 'b'; char val2 = get(); | |
370 | |
371 assertEquals(val1, 'a'); | |
372 assertEquals(val2, 'b'); | |
373 } | |
374 | |
375 { | |
376 c.v = new char[1]; char[] val1 = get1(); | |
377 c.v = new char[1]; char[] val2 = get1(); | |
378 assertTrue((isStableEnabled ? (val1 == val2) : (val1 != val2))); | |
379 } | |
380 } | |
381 } | |
382 | |
383 /* ==================================================== */ | |
384 | |
385 static class ObjectArrayLowerDim1 { | |
386 public @Stable Object[] v; | |
387 | |
388 public static final ObjectArrayLowerDim1 c = new ObjectArrayLowerDim1(); | |
389 public static char get() { return ((char[][])c.v)[0][0]; } | |
390 public static char[] get1() { return (char[])(c.v[0]); } | |
391 public static Object[] get2() { return c.v; } | |
392 | |
393 public static void test() throws Exception { | |
394 { | |
395 c.v = new char[1][1]; ((char[][])c.v)[0][0] = 'a'; char val1 = get(); | |
396 ((char[][])c.v)[0][0] = 'b'; char val2 = get(); | |
397 | |
398 assertEquals(val1, 'a'); | |
399 assertEquals(val2, 'b'); | |
400 } | |
401 | |
402 { | |
403 c.v = new char[1][1]; c.v[0] = new char[0]; char[] val1 = get1(); | |
404 c.v[0] = new char[0]; char[] val2 = get1(); | |
405 | |
406 assertTrue((isStableEnabled ? (val1 == val2) : (val1 != val2))); | |
407 } | |
408 | |
409 { | |
410 c.v = new char[0][0]; Object[] val1 = get2(); | |
411 c.v = new char[0][0]; Object[] val2 = get2(); | |
412 | |
413 assertTrue((isStableEnabled ? (val1 == val2) : (val1 != val2))); | |
414 } | |
415 } | |
416 } | |
417 | |
418 /* ==================================================== */ | |
419 | |
420 static class ObjectArrayLowerDim2 { | |
421 public @Stable Object[][] v; | |
422 | |
423 public static final ObjectArrayLowerDim2 c = new ObjectArrayLowerDim2(); | |
424 public static char get() { return ((char[][][])c.v)[0][0][0]; } | |
425 public static char[] get1() { return (char[])(c.v[0][0]); } | |
426 public static char[][] get2() { return (char[][])(c.v[0]); } | |
427 public static Object[][] get3() { return c.v; } | |
428 | |
429 public static void test() throws Exception { | |
430 { | |
431 c.v = new char[1][1][1]; ((char[][][])c.v)[0][0][0] = 'a'; char val1 = get(); | |
432 ((char[][][])c.v)[0][0][0] = 'b'; char val2 = get(); | |
433 | |
434 assertEquals(val1, 'a'); | |
435 assertEquals(val2, 'b'); | |
436 } | |
437 | |
438 { | |
439 c.v = new char[1][1][1]; c.v[0][0] = new char[0]; char[] val1 = get1(); | |
440 c.v[0][0] = new char[0]; char[] val2 = get1(); | |
441 | |
442 assertTrue((isStableEnabled ? (val1 == val2) : (val1 != val2))); | |
443 } | |
444 | |
445 { | |
446 c.v = new char[1][1][1]; c.v[0] = new char[0][0]; char[][] val1 = get2(); | |
447 c.v[0] = new char[0][0]; char[][] val2 = get2(); | |
448 | |
449 assertTrue((isStableEnabled ? (val1 == val2) : (val1 != val2))); | |
450 } | |
451 | |
452 { | |
453 c.v = new char[0][0][0]; Object[][] val1 = get3(); | |
454 c.v = new char[0][0][0]; Object[][] val2 = get3(); | |
455 | |
456 assertTrue((isStableEnabled ? (val1 == val2) : (val1 != val2))); | |
457 } | |
458 } | |
459 } | |
460 | |
461 /* ==================================================== */ | |
462 | |
463 static class NestedStableField { | |
464 static class A { | |
465 public @Stable char a; | |
466 | |
467 } | |
468 public @Stable A v; | |
469 | |
470 public static final NestedStableField c = new NestedStableField(); | |
471 public static A get() { return c.v; } | |
472 public static char get1() { return get().a; } | |
473 | |
474 public static void test() throws Exception { | |
475 { | |
476 c.v = new A(); c.v.a = 'a'; A val1 = get(); | |
477 c.v.a = 'b'; A val2 = get(); | |
478 | |
479 assertEquals(val1.a, 'b'); | |
480 assertEquals(val2.a, 'b'); | |
481 } | |
482 | |
483 { | |
484 c.v = new A(); c.v.a = 'a'; char val1 = get1(); | |
485 c.v.a = 'b'; char val2 = get1(); | |
486 c.v = new A(); c.v.a = 'c'; char val3 = get1(); | |
487 | |
488 assertEquals(val1, 'a'); | |
489 assertEquals(val2, (isStableEnabled ? 'a' : 'b')); | |
490 assertEquals(val3, (isStableEnabled ? 'a' : 'c')); | |
491 } | |
492 } | |
493 } | |
494 | |
495 /* ==================================================== */ | |
496 | |
497 static class NestedStableField1 { | |
498 static class A { | |
499 public @Stable char a; | |
500 public @Stable A next; | |
501 } | |
502 public @Stable A v; | |
503 | |
504 public static final NestedStableField1 c = new NestedStableField1(); | |
505 public static A get() { return c.v.next.next.next.next.next.next.next; } | |
506 public static char get1() { return get().a; } | |
507 | |
508 public static void test() throws Exception { | |
509 { | |
510 c.v = new A(); c.v.next = new A(); c.v.next.next = c.v; | |
511 c.v.a = 'a'; c.v.next.a = 'a'; A val1 = get(); | |
512 c.v.a = 'b'; c.v.next.a = 'b'; A val2 = get(); | |
513 | |
514 assertEquals(val1.a, 'b'); | |
515 assertEquals(val2.a, 'b'); | |
516 } | |
517 | |
518 { | |
519 c.v = new A(); c.v.next = c.v; | |
520 c.v.a = 'a'; char val1 = get1(); | |
521 c.v.a = 'b'; char val2 = get1(); | |
522 c.v = new A(); c.v.next = c.v; | |
523 c.v.a = 'c'; char val3 = get1(); | |
524 | |
525 assertEquals(val1, 'a'); | |
526 assertEquals(val2, (isStableEnabled ? 'a' : 'b')); | |
527 assertEquals(val3, (isStableEnabled ? 'a' : 'c')); | |
528 } | |
529 } | |
530 } | |
531 /* ==================================================== */ | |
532 | |
533 static class NestedStableField2 { | |
534 static class A { | |
535 public @Stable char a; | |
536 public @Stable A left; | |
537 public A right; | |
538 } | |
539 | |
540 public @Stable A v; | |
541 | |
542 public static final NestedStableField2 c = new NestedStableField2(); | |
543 public static char get() { return c.v.left.left.left.a; } | |
544 public static char get1() { return c.v.left.left.right.left.a; } | |
545 | |
546 public static void test() throws Exception { | |
547 { | |
548 c.v = new A(); c.v.left = c.v.right = c.v; | |
549 c.v.a = 'a'; char val1 = get(); char val2 = get1(); | |
550 c.v.a = 'b'; char val3 = get(); char val4 = get1(); | |
551 | |
552 assertEquals(val1, 'a'); | |
553 assertEquals(val3, (isStableEnabled ? 'a' : 'b')); | |
554 | |
555 assertEquals(val2, 'a'); | |
556 assertEquals(val4, 'b'); | |
557 } | |
558 } | |
559 } | |
560 | |
561 /* ==================================================== */ | |
562 | |
563 static class NestedStableField3 { | |
564 static class A { | |
565 public @Stable char a; | |
566 public @Stable A[] left; | |
567 public A[] right; | |
568 } | |
569 | |
570 public @Stable A[] v; | |
571 | |
572 public static final NestedStableField3 c = new NestedStableField3(); | |
573 public static char get() { return c.v[0].left[1].left[0].left[1].a; } | |
574 public static char get1() { return c.v[1].left[0].left[1].right[0].left[1].a; } | |
575 | |
576 public static void test() throws Exception { | |
577 { | |
578 A elem = new A(); | |
579 c.v = new A[] { elem, elem }; c.v[0].left = c.v[0].right = c.v; | |
580 elem.a = 'a'; char val1 = get(); char val2 = get1(); | |
581 elem.a = 'b'; char val3 = get(); char val4 = get1(); | |
582 | |
583 assertEquals(val1, 'a'); | |
584 assertEquals(val3, (isStableEnabled ? 'a' : 'b')); | |
585 | |
586 assertEquals(val2, 'a'); | |
587 assertEquals(val4, 'b'); | |
588 } | |
589 } | |
590 } | |
591 | |
592 /* ==================================================== */ | |
593 // Auxiliary methods | |
594 static void assertEquals(int i, int j) { if (i != j) throw new AssertionError(i + " != " + j); } | |
595 static void assertTrue(boolean b) { if (!b) throw new AssertionError(); } | |
596 | |
597 static boolean failed = false; | |
598 | |
599 public static void run(Class<?> test) { | |
600 Throwable ex = null; | |
601 System.out.print(test.getName()+": "); | |
602 try { | |
603 test.getMethod("test").invoke(null); | |
604 } catch (InvocationTargetException e) { | |
605 ex = e.getCause(); | |
606 } catch (Throwable e) { | |
607 ex = e; | |
608 } finally { | |
609 if (ex == null) { | |
610 System.out.println("PASSED"); | |
611 } else { | |
612 failed = true; | |
613 System.out.println("FAILED"); | |
614 ex.printStackTrace(System.out); | |
615 } | |
616 } | |
617 } | |
618 | |
619 static final boolean isStableEnabled; | |
620 static { | |
621 HotSpotDiagnosticMXBean diagnostic | |
622 = ManagementFactoryHelper.getDiagnosticMXBean(); | |
623 VMOption tmp; | |
624 try { | |
625 tmp = diagnostic.getVMOption("FoldStableValues"); | |
626 } catch (IllegalArgumentException e) { | |
627 tmp = null; | |
628 } | |
629 isStableEnabled = (tmp == null ? false : Boolean.parseBoolean(tmp.getValue())); | |
630 } | |
631 } |