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