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. 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 TestStableObject
28 * @summary tests on stable fields and arrays
29 * @library /testlibrary
30 * @compile -XDignore.symbol.file TestStableObject.java
31 * @run main ClassFileInstaller TestStableObject TestStableObject$ObjectStable TestStableObject$StaticObjectStable
32 * TestStableObject$VolatileObjectStable TestStableObject$ObjectArrayDim1 TestStableObject$ObjectArrayDim2
33 * TestStableObject$ObjectArrayDim3 TestStableObject$ObjectArrayDim4 TestStableObject$ObjectArrayLowerDim0
34 * TestStableObject$ObjectArrayLowerDim1 TestStableObject$NestedStableField TestStableObject$NestedStableField$A
35 * TestStableObject$NestedStableField1 TestStableObject$NestedStableField1$A TestStableObject$NestedStableField2
36 * TestStableObject$NestedStableField2$A TestStableObject$NestedStableField3 TestStableObject$NestedStableField3$A
37 * TestStableObject$Values TestStableObject$DefaultValue TestStableObject$ObjectArrayLowerDim2
38 *
39 * @run main/othervm -Xbootclasspath/a:. -server -XX:-TieredCompilation -Xcomp
40 * -XX:+UnlockExperimentalVMOptions -XX:+FoldStableValues
41 * -XX:+IgnoreUnrecognizedVMOptions -XX:+UseCompressedOops
42 * -XX:CompileOnly=::get,::get1,::get2,::get3,::get4 TestStableObject
43 * @run main/othervm -Xbootclasspath/a:. -server -XX:-TieredCompilation -Xcomp
44 * -XX:+UnlockExperimentalVMOptions -XX:+FoldStableValues
45 * -XX:+IgnoreUnrecognizedVMOptions -XX:-UseCompressedOops
46 * -XX:CompileOnly=::get,::get1,::get2,::get3,::get4 TestStableObject
47 *
48 * @run main/othervm -Xbootclasspath/a:. -server -XX:-TieredCompilation -Xcomp
49 * -XX:+UnlockExperimentalVMOptions -XX:-FoldStableValues
50 * -XX:+IgnoreUnrecognizedVMOptions -XX:+UseCompressedOops
51 * -XX:CompileOnly=::get,::get1,::get2,::get3,::get4 TestStableObject
52 * @run main/othervm -Xbootclasspath/a:. -server -XX:-TieredCompilation -Xcomp
53 * -XX:+UnlockExperimentalVMOptions -XX:-FoldStableValues
54 * -XX:+IgnoreUnrecognizedVMOptions -XX:-UseCompressedOops
55 * -XX:CompileOnly=::get,::get1,::get2,::get3,::get4 TestStableObject
56 */
57
58 import com.sun.management.HotSpotDiagnosticMXBean;
59 import com.sun.management.VMOption;
60 import sun.invoke.Stable;
61 import sun.management.ManagementFactoryHelper;
62 import java.lang.reflect.InvocationTargetException;
63
64 public class TestStableObject {
65 public static void main(String[] args) throws Exception {
66 System.out.println("@Stable enabled: "+isStableEnabled);
67 System.out.println();
68
69 run(DefaultValue.class);
70 run(ObjectStable.class);
71 run(StaticObjectStable.class);
72 run(VolatileObjectStable.class);
73
74 // @Stable arrays: Dim 1-4
75 run(ObjectArrayDim1.class);
76 run(ObjectArrayDim2.class);
77 run(ObjectArrayDim3.class);
78 run(ObjectArrayDim4.class);
79
80 // @Stable Object field: dynamic arrays
81 run(ObjectArrayLowerDim0.class);
82 run(ObjectArrayLowerDim1.class);
83 run(ObjectArrayLowerDim2.class);
84
85 // Nested @Stable fields
86 run(NestedStableField.class);
87 run(NestedStableField1.class);
88 run(NestedStableField2.class);
89 run(NestedStableField3.class);
90
91 if (failed) {
92 throw new Error("TEST FAILED");
93 }
94 }
95
96 /* ==================================================== */
97
98 enum Values {A, B, C, D, E, F}
99
100 static class DefaultValue {
101 public @Stable Object v;
102
103 public static final DefaultValue c = new DefaultValue();
104 public static Object get() { return c.v; }
105 public static void test() throws Exception {
106 Object val1 = get();
107 c.v = Values.A; Object val2 = get();
108 assertEquals(val1, null);
109 assertEquals(val2, Values.A);
110 }
111 }
112
113 /* ==================================================== */
114
115 static class ObjectStable {
116 public @Stable Values v;
117
118 public static final ObjectStable c = new ObjectStable ();
119 public static Values get() { return c.v; }
120 public static void test() throws Exception {
121 c.v = Values.A; Values val1 = get();
122 c.v = Values.B; Values val2 = get();
123 assertEquals(val1, Values.A);
124 assertEquals(val2, (isStableEnabled ? Values.A : Values.B));
125 }
126 }
127
128 /* ==================================================== */
129
130 static class StaticObjectStable {
131 public static @Stable Values v;
132
133 public static final ObjectStable c = new ObjectStable ();
134 public static Values get() { return c.v; }
135 public static void test() throws Exception {
136 c.v = Values.A; Values val1 = get();
137 c.v = Values.B; Values val2 = get();
138 assertEquals(val1, Values.A);
139 assertEquals(val2, (isStableEnabled ? Values.A : Values.B));
140 }
141 }
142
143 /* ==================================================== */
144
145 static class VolatileObjectStable {
146 public @Stable volatile Values v;
147
148 public static final VolatileObjectStable c = new VolatileObjectStable ();
149 public static Values get() { return c.v; }
150 public static void test() throws Exception {
151 c.v = Values.A; Values val1 = get();
152 c.v = Values.B; Values val2 = get();
153 assertEquals(val1, Values.A);
154 assertEquals(val2, (isStableEnabled ? Values.A : Values.B));
155 }
156 }
157
158 /* ==================================================== */
159 // @Stable array == field && all components are stable
160
161 static class ObjectArrayDim1 {
162 public @Stable Object[] v;
163
164 public static final ObjectArrayDim1 c = new ObjectArrayDim1();
165 public static Object get() { return c.v[0]; }
166 public static Object get1() { return c.v[10]; }
167 public static Object[] get2() { return c.v; }
168 public static void test() throws Exception {
169 {
170 c.v = new Object[1]; c.v[0] = Values.A; Object val1 = get();
171 c.v[0] = Values.B; Object val2 = get();
172 assertEquals(val1, Values.A);
173 assertEquals(val2, (isStableEnabled ? Values.A : Values.B));
174
175 c.v = new Object[1]; c.v[0] = Values.C; Object val3 = get();
176 assertEquals(val3, (isStableEnabled ? Values.A : Values.C));
177 }
178
179 {
180 c.v = new Object[20]; c.v[10] = Values.A; Object val1 = get1();
181 c.v[10] = Values.B; Object val2 = get1();
182 assertEquals(val1, Values.A);
183 assertEquals(val2, (isStableEnabled ? Values.A : Values.B));
184
185 c.v = new Object[20]; c.v[10] = Values.C; Object val3 = get1();
186 assertEquals(val3, (isStableEnabled ? Values.A : Values.C));
187 }
188
189 {
190 c.v = new Object[1]; Object[] val1 = get2();
191 c.v = new Object[1]; Object[] val2 = get2();
192 assertTrue((isStableEnabled ? (val1 == val2) : (val1 != val2)));
193 }
194 }
195 }
196
197 /* ==================================================== */
198
199 static class ObjectArrayDim2 {
200 public @Stable Object[][] v;
201
202 public static final ObjectArrayDim2 c = new ObjectArrayDim2();
203 public static Object get() { return c.v[0][0]; }
204 public static Object[] get1() { return c.v[0]; }
205 public static Object[][] get2() { return c.v; }
206 public static void test() throws Exception {
207 {
208 c.v = new Object[1][1]; c.v[0][0] = Values.A; Object val1 = get();
209 c.v[0][0] = Values.B; Object val2 = get();
210 assertEquals(val1, Values.A);
211 assertEquals(val2, (isStableEnabled ? Values.A : Values.B));
212
213 c.v = new Object[1][1]; c.v[0][0] = Values.C; Object val3 = get();
214 assertEquals(val3, (isStableEnabled ? Values.A : Values.C));
215
216 c.v[0] = new Object[1]; c.v[0][0] = Values.D; Object val4 = get();
217 assertEquals(val4, (isStableEnabled ? Values.A : Values.D));
218 }
219
220 {
221 c.v = new Object[1][1]; Object[] val1 = get1();
222 c.v[0] = new Object[1]; Object[] val2 = get1();
223 assertTrue((isStableEnabled ? (val1 == val2) : (val1 != val2)));
224 }
225
226 {
227 c.v = new Object[1][1]; Object[][] val1 = get2();
228 c.v = new Object[1][1]; Object[][] val2 = get2();
229 assertTrue((isStableEnabled ? (val1 == val2) : (val1 != val2)));
230 }
231 }
232 }
233
234 /* ==================================================== */
235
236 static class ObjectArrayDim3 {
237 public @Stable Object[][][] v;
238
239 public static final ObjectArrayDim3 c = new ObjectArrayDim3();
240 public static Object get() { return c.v[0][0][0]; }
241 public static Object[] get1() { return c.v[0][0]; }
242 public static Object[][] get2() { return c.v[0]; }
243 public static Object[][][] get3() { return c.v; }
244 public static void test() throws Exception {
245 {
246 c.v = new Object[1][1][1]; c.v[0][0][0] = Values.A; Object val1 = get();
247 c.v[0][0][0] = Values.B; Object val2 = get();
248 assertEquals(val1, Values.A);
249 assertEquals(val2, (isStableEnabled ? Values.A : Values.B));
250
251 c.v = new Object[1][1][1]; c.v[0][0][0] = Values.C; Object val3 = get();
252 assertEquals(val3, (isStableEnabled ? Values.A : Values.C));
253
254 c.v[0] = new Object[1][1]; c.v[0][0][0] = Values.D; Object val4 = get();
255 assertEquals(val4, (isStableEnabled ? Values.A : Values.D));
256
257 c.v[0][0] = new Object[1]; c.v[0][0][0] = Values.E; Object val5 = get();
258 assertEquals(val5, (isStableEnabled ? Values.A : Values.E));
259 }
260
261 {
262 c.v = new Object[1][1][1]; Object[] val1 = get1();
263 c.v[0][0] = new Object[1]; Object[] val2 = get1();
264 assertTrue((isStableEnabled ? (val1 == val2) : (val1 != val2)));
265 }
266
267 {
268 c.v = new Object[1][1][1]; Object[][] val1 = get2();
269 c.v[0] = new Object[1][1]; Object[][] val2 = get2();
270 assertTrue((isStableEnabled ? (val1 == val2) : (val1 != val2)));
271 }
272
273 {
274 c.v = new Object[1][1][1]; Object[][][] val1 = get3();
275 c.v = new Object[1][1][1]; Object[][][] val2 = get3();
276 assertTrue((isStableEnabled ? (val1 == val2) : (val1 != val2)));
277 }
278 }
279 }
280
281 /* ==================================================== */
282
283 static class ObjectArrayDim4 {
284 public @Stable Object[][][][] v;
285
286 public static final ObjectArrayDim4 c = new ObjectArrayDim4();
287 public static Object get() { return c.v[0][0][0][0]; }
288 public static Object[] get1() { return c.v[0][0][0]; }
289 public static Object[][] get2() { return c.v[0][0]; }
290 public static Object[][][] get3() { return c.v[0]; }
291 public static Object[][][][] get4() { return c.v; }
292 public static void test() throws Exception {
293 {
294 c.v = new Object[1][1][1][1]; c.v[0][0][0][0] = Values.A; Object val1 = get();
295 c.v[0][0][0][0] = Values.B; Object val2 = get();
296 assertEquals(val1, Values.A);
297 assertEquals(val2, (isStableEnabled ? Values.A : Values.B));
298
299 c.v = new Object[1][1][1][1]; c.v[0][0][0][0] = Values.C; Object val3 = get();
300 assertEquals(val3, (isStableEnabled ? Values.A : Values.C));
301
302 c.v[0] = new Object[1][1][1]; c.v[0][0][0][0] = Values.D; Object val4 = get();
303 assertEquals(val4, (isStableEnabled ? Values.A : Values.D));
304
305 c.v[0][0] = new Object[1][1]; c.v[0][0][0][0] = Values.E; Object val5 = get();
306 assertEquals(val5, (isStableEnabled ? Values.A : Values.E));
307
308 c.v[0][0][0] = new Object[1]; c.v[0][0][0][0] = Values.F; Object val6 = get();
309 assertEquals(val6, (isStableEnabled ? Values.A : Values.F));
310 }
311
312 {
313 c.v = new Object[1][1][1][1]; Object[] val1 = get1();
314 c.v[0][0][0] = new Object[1]; Object[] val2 = get1();
315 assertTrue((isStableEnabled ? (val1 == val2) : (val1 != val2)));
316 }
317
318 {
319 c.v = new Object[1][1][1][1]; Object[][] val1 = get2();
320 c.v[0][0] = new Object[1][1]; Object[][] val2 = get2();
321 assertTrue((isStableEnabled ? (val1 == val2) : (val1 != val2)));
322 }
323
324 {
325 c.v = new Object[1][1][1][1]; Object[][][] val1 = get3();
326 c.v[0] = new Object[1][1][1]; Object[][][] val2 = get3();
327 assertTrue((isStableEnabled ? (val1 == val2) : (val1 != val2)));
328 }
329
330 {
331 c.v = new Object[1][1][1][1]; Object[][][][] val1 = get4();
332 c.v = new Object[1][1][1][1]; Object[][][][] val2 = get4();
333 assertTrue((isStableEnabled ? (val1 == val2) : (val1 != val2)));
334 }
335
336 }
337 }
338
339 /* ==================================================== */
340 // Dynamic Dim is higher than static
341
342 static class ObjectArrayLowerDim0 {
343 public @Stable Object v;
344
345 public static final ObjectArrayLowerDim0 c = new ObjectArrayLowerDim0();
346 public static Object get() { return ((Object[])c.v)[0]; }
347 public static Object[] get1() { return (Object[])c.v; }
348
349 public static void test() throws Exception {
350 {
351 c.v = new Object[1]; ((Object[])c.v)[0] = Values.A; Object val1 = get();
352 ((Object[])c.v)[0] = Values.B; Object val2 = get();
353
354 assertEquals(val1, Values.A);
355 assertEquals(val2, Values.B);
356 }
357
358 {
359 c.v = new Object[1]; Object[] val1 = get1();
360 c.v = new Object[1]; Object[] val2 = get1();
361 assertTrue((isStableEnabled ? (val1 == val2) : (val1 != val2)));
362 }
363 }
364 }
365
366 /* ==================================================== */
367
368 static class ObjectArrayLowerDim1 {
369 public @Stable Object[] v;
370
371 public static final ObjectArrayLowerDim1 c = new ObjectArrayLowerDim1();
372 public static Object get() { return ((Object[][])c.v)[0][0]; }
373 public static Object[] get1() { return (Object[])(c.v[0]); }
374 public static Object[] get2() { return c.v; }
375
376 public static void test() throws Exception {
377 {
378 c.v = new Object[1][1]; ((Object[][])c.v)[0][0] = Values.A; Object val1 = get();
379 ((Object[][])c.v)[0][0] = Values.B; Object val2 = get();
380
381 assertEquals(val1, Values.A);
382 assertEquals(val2, Values.B);
383 }
384
385 {
386 c.v = new Object[1][1]; c.v[0] = new Object[0]; Object[] val1 = get1();
387 c.v[0] = new Object[0]; Object[] val2 = get1();
388
389 assertTrue((isStableEnabled ? (val1 == val2) : (val1 != val2)));
390 }
391
392 {
393 c.v = new Object[0][0]; Object[] val1 = get2();
394 c.v = new Object[0][0]; Object[] val2 = get2();
395
396 assertTrue((isStableEnabled ? (val1 == val2) : (val1 != val2)));
397 }
398 }
399 }
400
401 /* ==================================================== */
402
403 static class ObjectArrayLowerDim2 {
404 public @Stable Object[][] v;
405
406 public static final ObjectArrayLowerDim2 c = new ObjectArrayLowerDim2();
407 public static Object get() { return ((Object[][][])c.v)[0][0][0]; }
408 public static Object[] get1() { return (Object[])(c.v[0][0]); }
409 public static Object[][] get2() { return (Object[][])(c.v[0]); }
410 public static Object[][] get3() { return c.v; }
411
412 public static void test() throws Exception {
413 {
414 c.v = new Object[1][1][1]; ((Object[][][])c.v)[0][0][0] = Values.A; Object val1 = get();
415 ((Object[][][])c.v)[0][0][0] = Values.B; Object val2 = get();
416
417 assertEquals(val1, Values.A);
418 assertEquals(val2, Values.B);
419 }
420
421 {
422 c.v = new Object[1][1][1]; c.v[0][0] = new Object[0]; Object[] val1 = get1();
423 c.v[0][0] = new Object[0]; Object[] val2 = get1();
424
425 assertTrue((isStableEnabled ? (val1 == val2) : (val1 != val2)));
426 }
427
428 {
429 c.v = new Object[1][1][1]; c.v[0] = new Object[0][0]; Object[][] val1 = get2();
430 c.v[0] = new Object[0][0]; Object[][] val2 = get2();
431
432 assertTrue((isStableEnabled ? (val1 == val2) : (val1 != val2)));
433 }
434
435 {
436 c.v = new Object[0][0][0]; Object[][] val1 = get3();
437 c.v = new Object[0][0][0]; Object[][] val2 = get3();
438
439 assertTrue((isStableEnabled ? (val1 == val2) : (val1 != val2)));
440 }
441 }
442 }
443
444 /* ==================================================== */
445
446 static class NestedStableField {
447 static class A {
448 public @Stable Object a;
449
450 }
451 public @Stable A v;
452
453 public static final NestedStableField c = new NestedStableField();
454 public static A get() { return c.v; }
455 public static Object get1() { return get().a; }
456
457 public static void test() throws Exception {
458 {
459 c.v = new A(); c.v.a = Values.A; A val1 = get();
460 c.v.a = Values.B; A val2 = get();
461
462 assertEquals(val1.a, Values.B);
463 assertEquals(val2.a, Values.B);
464 }
465
466 {
467 c.v = new A(); c.v.a = Values.A; Object val1 = get1();
468 c.v.a = Values.B; Object val2 = get1();
469 c.v = new A(); c.v.a = Values.C; Object val3 = get1();
470
471 assertEquals(val1, Values.A);
472 assertEquals(val2, (isStableEnabled ? Values.A : Values.B));
473 assertEquals(val3, (isStableEnabled ? Values.A : Values.C));
474 }
475 }
476 }
477
478 /* ==================================================== */
479
480 static class NestedStableField1 {
481 static class A {
482 public @Stable Object a;
483 public @Stable A next;
484 }
485 public @Stable A v;
486
487 public static final NestedStableField1 c = new NestedStableField1();
488 public static A get() { return c.v.next.next.next.next.next.next.next; }
489 public static Object get1() { return get().a; }
490
491 public static void test() throws Exception {
492 {
493 c.v = new A(); c.v.next = new A(); c.v.next.next = c.v;
494 c.v.a = Values.A; c.v.next.a = Values.A; A val1 = get();
495 c.v.a = Values.B; c.v.next.a = Values.B; A val2 = get();
496
497 assertEquals(val1.a, Values.B);
498 assertEquals(val2.a, Values.B);
499 }
500
501 {
502 c.v = new A(); c.v.next = c.v;
503 c.v.a = Values.A; Object val1 = get1();
504 c.v.a = Values.B; Object val2 = get1();
505 c.v = new A(); c.v.next = c.v;
506 c.v.a = Values.C; Object val3 = get1();
507
508 assertEquals(val1, Values.A);
509 assertEquals(val2, (isStableEnabled ? Values.A : Values.B));
510 assertEquals(val3, (isStableEnabled ? Values.A : Values.C));
511 }
512 }
513 }
514 /* ==================================================== */
515
516 static class NestedStableField2 {
517 static class A {
518 public @Stable Object a;
519 public @Stable A left;
520 public A right;
521 }
522
523 public @Stable A v;
524
525 public static final NestedStableField2 c = new NestedStableField2();
526 public static Object get() { return c.v.left.left.left.a; }
527 public static Object get1() { return c.v.left.left.right.left.a; }
528
529 public static void test() throws Exception {
530 {
531 c.v = new A(); c.v.left = c.v.right = c.v;
532 c.v.a = Values.A; Object val1 = get(); Object val2 = get1();
533 c.v.a = Values.B; Object val3 = get(); Object val4 = get1();
534
535 assertEquals(val1, Values.A);
536 assertEquals(val3, (isStableEnabled ? Values.A : Values.B));
537
538 assertEquals(val2, Values.A);
539 assertEquals(val4, Values.B);
540 }
541 }
542 }
543
544 /* ==================================================== */
545
546 static class NestedStableField3 {
547 static class A {
548 public @Stable Object a;
549 public @Stable A[] left;
550 public A[] right;
551 }
552
553 public @Stable A[] v;
554
555 public static final NestedStableField3 c = new NestedStableField3();
556 public static Object get() { return c.v[0].left[1].left[0].left[1].a; }
557 public static Object get1() { return c.v[1].left[0].left[1].right[0].left[1].a; }
558
559 public static void test() throws Exception {
560 {
561 A elem = new A();
562 c.v = new A[] { elem, elem }; c.v[0].left = c.v[0].right = c.v;
563 elem.a = Values.A; Object val1 = get(); Object val2 = get1();
564 elem.a = Values.B; Object val3 = get(); Object val4 = get1();
565
566 assertEquals(val1, Values.A);
567 assertEquals(val3, (isStableEnabled ? Values.A : Values.B));
568
569 assertEquals(val2, Values.A);
570 assertEquals(val4, Values.B);
571 }
572 }
573 }
574
575 /* ==================================================== */
576 // Auxiliary methods
577 static void assertEquals(Object i, Object j) { if (i != j) throw new AssertionError(i + " != " + j); }
578 static void assertTrue(boolean b) { if (!b) throw new AssertionError(); }
579
580 static boolean failed = false;
581
582 public static void run(Class<?> test) {
583 Throwable ex = null;
584 System.out.print(test.getName()+": ");
585 try {
586 test.getMethod("test").invoke(null);
587 } catch (InvocationTargetException e) {
588 ex = e.getCause();
589 } catch (Throwable e) {
590 ex = e;
591 } finally {
592 if (ex == null) {
593 System.out.println("PASSED");
594 } else {
595 failed = true;
596 System.out.println("FAILED");
597 ex.printStackTrace(System.out);
598 }
599 }
600 }
601
602 static final boolean isStableEnabled;
603 static {
604 HotSpotDiagnosticMXBean diagnostic
605 = ManagementFactoryHelper.getDiagnosticMXBean();
606 VMOption tmp;
607 try {
608 tmp = diagnostic.getVMOption("FoldStableValues");
609 } catch (IllegalArgumentException e) {
610 tmp = null;
611 }
612 isStableEnabled = (tmp == null ? false : Boolean.parseBoolean(tmp.getValue()));
613 }
614 }