1 /*
2 * Copyright (c) 2012, 2023, 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 package jdk.test.whitebox;
25
26 import java.lang.management.MemoryUsage;
27 import java.lang.reflect.Executable;
28 import java.util.Arrays;
29 import java.util.List;
30 import java.util.function.BiFunction;
31 import java.util.function.Function;
32 import java.security.BasicPermission;
33 import java.util.Objects;
34
35 import jdk.test.whitebox.parser.DiagnosticCommand;
36
37 public class WhiteBox {
38 @SuppressWarnings("serial")
39 public static class WhiteBoxPermission extends BasicPermission {
40 public WhiteBoxPermission(String s) {
41 super(s);
42 }
43 }
44
45 private WhiteBox() {}
46 private static final WhiteBox instance = new WhiteBox();
47 private static native void registerNatives();
48
49 /**
50 * Returns the singleton WhiteBox instance.
51 *
52 * The returned WhiteBox object should be carefully guarded
53 * by the caller, since it can be used to read and write data
54 * at arbitrary memory addresses. It must never be passed to
55 * untrusted code.
56 */
57 public synchronized static WhiteBox getWhiteBox() {
58 @SuppressWarnings("removal")
59 SecurityManager sm = System.getSecurityManager();
60 if (sm != null) {
61 sm.checkPermission(new WhiteBoxPermission("getInstance"));
62 }
63 return instance;
64 }
65
66 static {
67 registerNatives();
68 }
69
70 // Get the maximum heap size supporting COOPs
71 public native long getCompressedOopsMaxHeapSize();
72 // Arguments
73 public native void printHeapSizes();
74
75 // Memory
76 private native long getObjectAddress0(Object o);
77 public long getObjectAddress(Object o) {
78 Objects.requireNonNull(o);
79 return getObjectAddress0(o);
80 }
81
82 public native int getHeapOopSize();
83 public native int getVMPageSize();
84 public native long getVMAllocationGranularity();
85 public native long getVMLargePageSize();
86 public native long getHeapSpaceAlignment();
87 public native long getHeapAlignment();
88
89 private native boolean isObjectInOldGen0(Object o);
90 public boolean isObjectInOldGen(Object o) {
91 Objects.requireNonNull(o);
92 return isObjectInOldGen0(o);
93 }
94
95 private native long getObjectSize0(Object o);
96 public long getObjectSize(Object o) {
97 Objects.requireNonNull(o);
98 return getObjectSize0(o);
99 }
100
101 // Runtime
102 // Make sure class name is in the correct format
103 public int countAliveClasses(String name) {
104 return countAliveClasses0(name.replace('.', '/'));
105 }
106 private native int countAliveClasses0(String name);
107
108 public boolean isClassAlive(String name) {
109 return countAliveClasses(name) != 0;
110 }
111
112 public native int getSymbolRefcount(String name);
113
114 public native boolean deflateIdleMonitors();
115
116 private native boolean isMonitorInflated0(Object obj);
117 public boolean isMonitorInflated(Object obj) {
118 Objects.requireNonNull(obj);
119 return isMonitorInflated0(obj);
120 }
121
122 public native void forceSafepoint();
123
124 public native void forceClassLoaderStatsSafepoint();
125
126 private native long getConstantPool0(Class<?> aClass);
127 public long getConstantPool(Class<?> aClass) {
128 Objects.requireNonNull(aClass);
129 return getConstantPool0(aClass);
130 }
131
132 private native Object[] getResolvedReferences0(Class<?> aClass);
133 public Object[] getResolvedReferences(Class<?> aClass) {
134 Objects.requireNonNull(aClass);
135 return getResolvedReferences0(aClass);
136 }
137
138 private native int remapInstructionOperandFromCPCache0(Class<?> aClass, int index);
139 public int remapInstructionOperandFromCPCache(Class<?> aClass, int index) {
140 Objects.requireNonNull(aClass);
141 return remapInstructionOperandFromCPCache0(aClass, index);
142 }
143
144 private native int encodeConstantPoolIndyIndex0(int index);
145 public int encodeConstantPoolIndyIndex(int index) {
146 return encodeConstantPoolIndyIndex0(index);
147 }
148
149 private native int getFieldEntriesLength0(Class<?> aClass);
150 public int getFieldEntriesLength(Class<?> aClass) {
151 Objects.requireNonNull(aClass);
152 return getFieldEntriesLength0(aClass);
153 }
154
155 private native int getFieldCPIndex0(Class<?> aClass, int index);
156 public int getFieldCPIndex(Class<?> aClass, int index) {
157 Objects.requireNonNull(aClass);
158 return getFieldCPIndex0(aClass, index);
159 }
160
161 private native int getMethodEntriesLength0(Class<?> aClass);
162 public int getMethodEntriesLength(Class<?> aClass) {
163 Objects.requireNonNull(aClass);
164 return getMethodEntriesLength0(aClass);
165 }
166
167 private native int getMethodCPIndex0(Class<?> aClass, int index);
168 public int getMethodCPIndex(Class<?> aClass, int index) {
169 Objects.requireNonNull(aClass);
170 return getMethodCPIndex0(aClass, index);
171 }
172
173 private native int getIndyInfoLength0(Class<?> aClass);
174 public int getIndyInfoLength(Class<?> aClass) {
175 Objects.requireNonNull(aClass);
176 return getIndyInfoLength0(aClass);
177 }
178
179 private native int getIndyCPIndex0(Class<?> aClass, int index);
180 public int getIndyCPIndex(Class<?> aClass, int index) {
181 Objects.requireNonNull(aClass);
182 return getIndyCPIndex0(aClass, index);
183 }
184
185 private native String printClasses0(String classNamePattern, int flags);
186 public String printClasses(String classNamePattern, int flags) {
187 Objects.requireNonNull(classNamePattern);
188 return printClasses0(classNamePattern, flags);
189 }
190
191 private native String printMethods0(String classNamePattern, String methodPattern, int flags);
192 public String printMethods(String classNamePattern, String methodPattern, int flags) {
193 Objects.requireNonNull(classNamePattern);
194 Objects.requireNonNull(methodPattern);
195 return printMethods0(classNamePattern, methodPattern, flags);
196 }
197
198 // JVMTI
199 private native void addToBootstrapClassLoaderSearch0(String segment);
200 public void addToBootstrapClassLoaderSearch(String segment){
201 Objects.requireNonNull(segment);
202 addToBootstrapClassLoaderSearch0(segment);
203 }
204
205 private native void addToSystemClassLoaderSearch0(String segment);
206 public void addToSystemClassLoaderSearch(String segment) {
207 Objects.requireNonNull(segment);
208 addToSystemClassLoaderSearch0(segment);
209 }
210
211 // G1
212
213 public native boolean g1InConcurrentMark();
214 public native int g1CompletedConcurrentMarkCycles();
215
216 // Perform a complete concurrent GC cycle, using concurrent GC breakpoints.
217 // Completes any in-progress cycle before performing the requested cycle.
218 // Returns true if the cycle completed successfully. If the cycle was not
219 // successful (e.g. it was aborted), then throws RuntimeException if
220 // errorIfFail is true, returning false otherwise.
221 public boolean g1RunConcurrentGC(boolean errorIfFail) {
222 try {
223 // Take control, waiting until any in-progress cycle completes.
224 concurrentGCAcquireControl();
225 int count = g1CompletedConcurrentMarkCycles();
226 concurrentGCRunTo(AFTER_MARKING_STARTED, false);
227 concurrentGCRunToIdle();
228 if (count < g1CompletedConcurrentMarkCycles()) {
229 return true;
230 } else if (errorIfFail) {
231 throw new RuntimeException("Concurrent GC aborted");
232 } else {
233 return false;
234 }
235 } finally {
236 concurrentGCReleaseControl();
237 }
238 }
239
240 public void g1RunConcurrentGC() {
241 g1RunConcurrentGC(true);
242 }
243
244 // Start a concurrent GC cycle, using concurrent GC breakpoints.
245 // The concurrent GC will continue in parallel with the caller.
246 // Completes any in-progress cycle before starting the requested cycle.
247 public void g1StartConcurrentGC() {
248 try {
249 // Take control, waiting until any in-progress cycle completes.
250 concurrentGCAcquireControl();
251 concurrentGCRunTo(AFTER_MARKING_STARTED, false);
252 } finally {
253 // Release control, permitting the cycle to complete.
254 concurrentGCReleaseControl();
255 }
256 }
257
258 public native boolean g1HasRegionsToUncommit();
259 private native boolean g1IsHumongous0(Object o);
260 public boolean g1IsHumongous(Object o) {
261 Objects.requireNonNull(o);
262 return g1IsHumongous0(o);
263 }
264
265 private native boolean g1BelongsToHumongousRegion0(long adr);
266 public boolean g1BelongsToHumongousRegion(long adr) {
267 if (adr == 0) {
268 throw new IllegalArgumentException("adr argument should not be null");
269 }
270 return g1BelongsToHumongousRegion0(adr);
271 }
272
273
274 private native boolean g1BelongsToFreeRegion0(long adr);
275 public boolean g1BelongsToFreeRegion(long adr) {
276 if (adr == 0) {
277 throw new IllegalArgumentException("adr argument should not be null");
278 }
279 return g1BelongsToFreeRegion0(adr);
280 }
281
282 public native long g1NumMaxRegions();
283 public native long g1NumFreeRegions();
284 public native int g1RegionSize();
285 public native MemoryUsage g1AuxiliaryMemoryUsage();
286 private native Object[] parseCommandLine0(String commandline, char delim, DiagnosticCommand[] args);
287 public Object[] parseCommandLine(String commandline, char delim, DiagnosticCommand[] args) {
288 Objects.requireNonNull(args);
289 return parseCommandLine0(commandline, delim, args);
290 }
291
292 public native int g1ActiveMemoryNodeCount();
293 public native int[] g1MemoryNodeIds();
294
295 // Parallel GC
296 public native long psVirtualSpaceAlignment();
297 public native long psHeapGenerationAlignment();
298
299 /**
300 * Enumerates old regions with liveness less than specified and produces some statistics
301 * @param liveness percent of region's liveness (live_objects / total_region_size * 100).
302 * @return long[3] array where long[0] - total count of old regions
303 * long[1] - total memory of old regions
304 * long[2] - lowest estimation of total memory of old regions to be freed (non-full
305 * regions are not included)
306 */
307 public native long[] g1GetMixedGCInfo(int liveness);
308
309 // NMT
310 public native long NMTMalloc(long size);
311 public native void NMTFree(long mem);
312 public native long NMTReserveMemory(long size);
313 public native long NMTAttemptReserveMemoryAt(long addr, long size);
314 public native void NMTCommitMemory(long addr, long size);
315 public native void NMTUncommitMemory(long addr, long size);
316 public native void NMTReleaseMemory(long addr, long size);
317 public native long NMTMallocWithPseudoStack(long size, int index);
318 public native long NMTMallocWithPseudoStackAndType(long size, int index, int type);
319 public native int NMTGetHashSize();
320 public native long NMTNewArena(long initSize);
321 public native void NMTFreeArena(long arena);
322 public native void NMTArenaMalloc(long arena, long size);
323
324 // Compiler
325
326 // Determines if the libgraal shared library file is present.
327 public native boolean hasLibgraal();
328 public native boolean isC2OrJVMCIIncluded();
329 public native boolean isJVMCISupportedByGC();
330
331 public native int matchesMethod(Executable method, String pattern);
332 public native int matchesInline(Executable method, String pattern);
333 public native boolean shouldPrintAssembly(Executable method, int comp_level);
334 public native int deoptimizeFrames(boolean makeNotEntrant);
335 public native boolean isFrameDeoptimized(int depth);
336 public native void deoptimizeAll();
337
338 public boolean isMethodCompiled(Executable method) {
339 return isMethodCompiled(method, false /*not osr*/);
340 }
341 private native boolean isMethodCompiled0(Executable method, boolean isOsr);
342 public boolean isMethodCompiled(Executable method, boolean isOsr){
343 Objects.requireNonNull(method);
344 return isMethodCompiled0(method, isOsr);
345 }
346 public boolean isMethodCompilable(Executable method) {
347 return isMethodCompilable(method, -1 /*any*/);
348 }
349 public boolean isMethodCompilable(Executable method, int compLevel) {
350 return isMethodCompilable(method, compLevel, false /*not osr*/);
351 }
352 private native boolean isMethodCompilable0(Executable method, int compLevel, boolean isOsr);
353 public boolean isMethodCompilable(Executable method, int compLevel, boolean isOsr) {
354 Objects.requireNonNull(method);
355 return isMethodCompilable0(method, compLevel, isOsr);
356 }
357 private native boolean isMethodQueuedForCompilation0(Executable method);
358 public boolean isMethodQueuedForCompilation(Executable method) {
359 Objects.requireNonNull(method);
360 return isMethodQueuedForCompilation0(method);
361 }
362 // Determine if the compiler corresponding to the compilation level 'compLevel'
363 // and to the compilation context 'compilation_context' provides an intrinsic
364 // for the method 'method'. An intrinsic is available for method 'method' if:
365 // - the intrinsic is enabled (by using the appropriate command-line flag) and
366 // - the platform on which the VM is running provides the instructions necessary
367 // for the compiler to generate the intrinsic code.
368 //
369 // The compilation context is related to using the DisableIntrinsic flag on a
370 // per-method level, see hotspot/src/share/vm/compiler/abstractCompiler.hpp
371 // for more details.
372 public boolean isIntrinsicAvailable(Executable method,
373 Executable compilationContext,
374 int compLevel) {
375 Objects.requireNonNull(method);
376 return isIntrinsicAvailable0(method, compilationContext, compLevel);
377 }
378 // If usage of the DisableIntrinsic flag is not expected (or the usage can be ignored),
379 // use the below method that does not require the compilation context as argument.
380 public boolean isIntrinsicAvailable(Executable method, int compLevel) {
381 return isIntrinsicAvailable(method, null, compLevel);
382 }
383 private native boolean isIntrinsicAvailable0(Executable method,
384 Executable compilationContext,
385 int compLevel);
386 public int deoptimizeMethod(Executable method) {
387 return deoptimizeMethod(method, false /*not osr*/);
388 }
389 private native int deoptimizeMethod0(Executable method, boolean isOsr);
390 public int deoptimizeMethod(Executable method, boolean isOsr) {
391 Objects.requireNonNull(method);
392 return deoptimizeMethod0(method, isOsr);
393 }
394 public void makeMethodNotCompilable(Executable method) {
395 makeMethodNotCompilable(method, -1 /*any*/);
396 }
397 public void makeMethodNotCompilable(Executable method, int compLevel) {
398 makeMethodNotCompilable(method, compLevel, false /*not osr*/);
399 }
400 private native void makeMethodNotCompilable0(Executable method, int compLevel, boolean isOsr);
401 public void makeMethodNotCompilable(Executable method, int compLevel, boolean isOsr) {
402 Objects.requireNonNull(method);
403 makeMethodNotCompilable0(method, compLevel, isOsr);
404 }
405 public int getMethodCompilationLevel(Executable method) {
406 return getMethodCompilationLevel(method, false /*not osr*/);
407 }
408 private native int getMethodCompilationLevel0(Executable method, boolean isOsr);
409 public int getMethodCompilationLevel(Executable method, boolean isOsr) {
410 Objects.requireNonNull(method);
411 return getMethodCompilationLevel0(method, isOsr);
412 }
413 public int getMethodDecompileCount(Executable method) {
414 Objects.requireNonNull(method);
415 return getMethodDecompileCount0(method);
416 }
417 private native int getMethodDecompileCount0(Executable method);
418 // Get the total trap count of a method. If the trap count for a specific reason
419 // did overflow, this includes the overflow trap count of the method.
420 public int getMethodTrapCount(Executable method) {
421 Objects.requireNonNull(method);
422 return getMethodTrapCount0(method, null);
423 }
424 // Get the trap count of a method for a specific reason. If the trap count for
425 // that reason did overflow, this includes the overflow trap count of the method.
426 public int getMethodTrapCount(Executable method, String reason) {
427 Objects.requireNonNull(method);
428 return getMethodTrapCount0(method, reason);
429 }
430 private native int getMethodTrapCount0(Executable method, String reason);
431 // Get the total deopt count.
432 public int getDeoptCount() {
433 return getDeoptCount0(null, null);
434 }
435 // Get the deopt count for a specific reason and a specific action. If either
436 // one of 'reason' or 'action' is null, the method returns the sum of all
437 // deoptimizations with the specific 'action' or 'reason' respectively.
438 // If both arguments are null, the method returns the total deopt count.
439 public int getDeoptCount(String reason, String action) {
440 return getDeoptCount0(reason, action);
441 }
442 private native int getDeoptCount0(String reason, String action);
443 private native boolean testSetDontInlineMethod0(Executable method, boolean value);
444 public boolean testSetDontInlineMethod(Executable method, boolean value) {
445 Objects.requireNonNull(method);
446 return testSetDontInlineMethod0(method, value);
447 }
448 public int getCompileQueuesSize() {
449 return getCompileQueueSize(-1 /*any*/);
450 }
451 public native int getCompileQueueSize(int compLevel);
452 private native boolean testSetForceInlineMethod0(Executable method, boolean value);
453 public boolean testSetForceInlineMethod(Executable method, boolean value) {
454 Objects.requireNonNull(method);
455 return testSetForceInlineMethod0(method, value);
456 }
457 public boolean enqueueMethodForCompilation(Executable method, int compLevel) {
458 return enqueueMethodForCompilation(method, compLevel, -1 /*InvocationEntryBci*/);
459 }
460 private native boolean enqueueMethodForCompilation0(Executable method, int compLevel, int entry_bci);
461 public boolean enqueueMethodForCompilation(Executable method, int compLevel, int entry_bci) {
462 Objects.requireNonNull(method);
463 return enqueueMethodForCompilation0(method, compLevel, entry_bci);
464 }
465 private native boolean enqueueInitializerForCompilation0(Class<?> aClass, int compLevel);
466 public boolean enqueueInitializerForCompilation(Class<?> aClass, int compLevel) {
467 Objects.requireNonNull(aClass);
468 return enqueueInitializerForCompilation0(aClass, compLevel);
469 }
470 private native void clearMethodState0(Executable method);
471 public native void markMethodProfiled(Executable method);
472 public void clearMethodState(Executable method) {
473 Objects.requireNonNull(method);
474 clearMethodState0(method);
475 }
476 public native void lockCompilation();
477 public native void unlockCompilation();
478 private native int getMethodEntryBci0(Executable method);
479 public int getMethodEntryBci(Executable method) {
480 Objects.requireNonNull(method);
481 return getMethodEntryBci0(method);
482 }
483 private native Object[] getNMethod0(Executable method, boolean isOsr);
484 public Object[] getNMethod(Executable method, boolean isOsr) {
485 Objects.requireNonNull(method);
486 return getNMethod0(method, isOsr);
487 }
488 public native long allocateCodeBlob(int size, int type);
489 public long allocateCodeBlob(long size, int type) {
490 int intSize = (int) size;
491 if ((long) intSize != size || size < 0) {
492 throw new IllegalArgumentException(
493 "size argument has illegal value " + size);
494 }
495 return allocateCodeBlob( intSize, type);
496 }
497 public native void freeCodeBlob(long addr);
498 public native Object[] getCodeHeapEntries(int type);
499 public native int getCompilationActivityMode();
500 private native long getMethodData0(Executable method);
501 public long getMethodData(Executable method) {
502 Objects.requireNonNull(method);
503 return getMethodData0(method);
504 }
505 public native Object[] getCodeBlob(long addr);
506
507 private native void clearInlineCaches0(boolean preserve_static_stubs);
508 public void clearInlineCaches() {
509 clearInlineCaches0(false);
510 }
511 public void clearInlineCaches(boolean preserve_static_stubs) {
512 clearInlineCaches0(preserve_static_stubs);
513 }
514
515 // Intered strings
516 public native boolean isInStringTable(String str);
517
518 // Memory
519 public native void readReservedMemory();
520 public native long allocateMetaspace(ClassLoader classLoader, long size);
521 public native long incMetaspaceCapacityUntilGC(long increment);
522 public native long metaspaceCapacityUntilGC();
523 public native long metaspaceSharedRegionAlignment();
524
525 public native void cleanMetaspaces();
526
527 // Metaspace Arena Tests
528 public native long createMetaspaceTestContext(long commit_limit, long reserve_limit);
529 public native void destroyMetaspaceTestContext(long context);
530 public native void purgeMetaspaceTestContext(long context);
531 public native void printMetaspaceTestContext(long context);
532 public native long getTotalCommittedWordsInMetaspaceTestContext(long context);
533 public native long getTotalUsedWordsInMetaspaceTestContext(long context);
534 public native long createArenaInTestContext(long context, boolean is_micro);
535 public native void destroyMetaspaceTestArena(long arena);
536 public native long allocateFromMetaspaceTestArena(long arena, long word_size);
537 public native void deallocateToMetaspaceTestArena(long arena, long p, long word_size);
538
539 public native long maxMetaspaceAllocationSize();
540
541 // Don't use these methods directly
542 // Use jdk.test.whitebox.gc.GC class instead.
543 public native boolean isGCSupported(int name);
544 public native boolean isGCSupportedByJVMCICompiler(int name);
545 public native boolean isGCSelected(int name);
546 public native boolean isGCSelectedErgonomically();
547
548 // Force Young GC
549 public native void youngGC();
550
551 // Force Full GC
552 public native void fullGC();
553
554 // Returns true if the current GC supports concurrent collection control.
555 public native boolean supportsConcurrentGCBreakpoints();
556
557 private void checkConcurrentGCBreakpointsSupported() {
558 if (!supportsConcurrentGCBreakpoints()) {
559 throw new UnsupportedOperationException("Concurrent GC breakpoints not supported");
560 }
561 }
562
563 private native void concurrentGCAcquireControl0();
564 private native void concurrentGCReleaseControl0();
565 private native void concurrentGCRunToIdle0();
566 private native boolean concurrentGCRunTo0(String breakpoint);
567
568 private static boolean concurrentGCIsControlled = false;
569 private void checkConcurrentGCIsControlled() {
570 if (!concurrentGCIsControlled) {
571 throw new IllegalStateException("Not controlling concurrent GC");
572 }
573 }
574
575 // All collectors supporting concurrent GC breakpoints are expected
576 // to provide at least the following breakpoints.
577 public final String AFTER_MARKING_STARTED = "AFTER MARKING STARTED";
578 public final String BEFORE_MARKING_COMPLETED = "BEFORE MARKING COMPLETED";
579
580 // Collectors supporting concurrent GC breakpoints that do reference
581 // processing concurrently should provide the following breakpoint.
582 public final String AFTER_CONCURRENT_REFERENCE_PROCESSING_STARTED =
583 "AFTER CONCURRENT REFERENCE PROCESSING STARTED";
584
585 // G1 specific GC breakpoints.
586 public final String G1_AFTER_REBUILD_STARTED = "AFTER REBUILD STARTED";
587 public final String G1_BEFORE_REBUILD_COMPLETED = "BEFORE REBUILD COMPLETED";
588 public final String G1_AFTER_CLEANUP_STARTED = "AFTER CLEANUP STARTED";
589 public final String G1_BEFORE_CLEANUP_COMPLETED = "BEFORE CLEANUP COMPLETED";
590
591 public void concurrentGCAcquireControl() {
592 checkConcurrentGCBreakpointsSupported();
593 if (concurrentGCIsControlled) {
594 throw new IllegalStateException("Already controlling concurrent GC");
595 }
596 concurrentGCAcquireControl0();
597 concurrentGCIsControlled = true;
598 }
599
600 public void concurrentGCReleaseControl() {
601 checkConcurrentGCBreakpointsSupported();
602 concurrentGCReleaseControl0();
603 concurrentGCIsControlled = false;
604 }
605
606 // Keep concurrent GC idle. Release from breakpoint.
607 public void concurrentGCRunToIdle() {
608 checkConcurrentGCBreakpointsSupported();
609 checkConcurrentGCIsControlled();
610 concurrentGCRunToIdle0();
611 }
612
613 // Allow concurrent GC to run to breakpoint.
614 // Throws IllegalStateException if reached end of cycle first.
615 public void concurrentGCRunTo(String breakpoint) {
616 concurrentGCRunTo(breakpoint, true);
617 }
618
619 // Allow concurrent GC to run to breakpoint.
620 // Returns true if reached breakpoint. If reached end of cycle first,
621 // then throws IllegalStateException if errorIfFail is true, returning
622 // false otherwise.
623 public boolean concurrentGCRunTo(String breakpoint, boolean errorIfFail) {
624 checkConcurrentGCBreakpointsSupported();
625 checkConcurrentGCIsControlled();
626 if (breakpoint == null) {
627 throw new NullPointerException("null breakpoint");
628 } else if (concurrentGCRunTo0(breakpoint)) {
629 return true;
630 } else if (errorIfFail) {
631 throw new IllegalStateException("Missed requested breakpoint \"" + breakpoint + "\"");
632 } else {
633 return false;
634 }
635 }
636
637 // Tests on ReservedSpace/VirtualSpace classes
638 public native int stressVirtualSpaceResize(long reservedSpaceSize, long magnitude, long iterations);
639 public native void readFromNoaccessArea();
640 public native long getThreadStackSize();
641 public native long getThreadRemainingStackSize();
642
643 // CPU features
644 public native String getCPUFeatures();
645
646 // VM flags
647 public native boolean isConstantVMFlag(String name);
648 public native boolean isDefaultVMFlag(String name);
649 public native boolean isLockedVMFlag(String name);
650 public native void setBooleanVMFlag(String name, boolean value);
651 public native void setIntVMFlag(String name, long value);
652 public native void setUintVMFlag(String name, long value);
653 public native void setIntxVMFlag(String name, long value);
654 public native void setUintxVMFlag(String name, long value);
655 public native void setUint64VMFlag(String name, long value);
656 public native void setSizeTVMFlag(String name, long value);
657 public native void setStringVMFlag(String name, String value);
658 public native void setDoubleVMFlag(String name, double value);
659 public native Boolean getBooleanVMFlag(String name);
660 public native Long getIntVMFlag(String name);
661 public native Long getUintVMFlag(String name);
662 public native Long getIntxVMFlag(String name);
663 public native Long getUintxVMFlag(String name);
664 public native Long getUint64VMFlag(String name);
665 public native Long getSizeTVMFlag(String name);
666 public native String getStringVMFlag(String name);
667 public native Double getDoubleVMFlag(String name);
668 private final List<Function<String,Object>> flagsGetters = Arrays.asList(
669 this::getBooleanVMFlag, this::getIntVMFlag, this::getUintVMFlag,
670 this::getIntxVMFlag, this::getUintxVMFlag, this::getUint64VMFlag,
671 this::getSizeTVMFlag, this::getStringVMFlag, this::getDoubleVMFlag);
672
673 public Object getVMFlag(String name) {
674 return flagsGetters.stream()
675 .map(f -> f.apply(name))
676 .filter(x -> x != null)
677 .findAny()
678 .orElse(null);
679 }
680
681 // Jigsaw
682 public native void DefineModule(Object module, boolean is_open, String version,
683 String location, Object[] packages);
684 public native void AddModuleExports(Object from_module, String pkg, Object to_module);
685 public native void AddReadsModule(Object from_module, Object source_module);
686 public native void AddModuleExportsToAllUnnamed(Object module, String pkg);
687 public native void AddModuleExportsToAll(Object module, String pkg);
688
689 public native int getCDSOffsetForName0(String name);
690 public int getCDSOffsetForName(String name) throws Exception {
691 int offset = getCDSOffsetForName0(name);
692 if (offset == -1) {
693 throw new RuntimeException(name + " not found");
694 }
695 return offset;
696 }
697 public native int getCDSConstantForName0(String name);
698 public int getCDSConstantForName(String name) throws Exception {
699 int constant = getCDSConstantForName0(name);
700 if (constant == -1) {
701 throw new RuntimeException(name + " not found");
702 }
703 return constant;
704 }
705 public native Boolean getMethodBooleanOption(Executable method, String name);
706 public native Long getMethodIntxOption(Executable method, String name);
707 public native Long getMethodUintxOption(Executable method, String name);
708 public native Double getMethodDoubleOption(Executable method, String name);
709 public native String getMethodStringOption(Executable method, String name);
710 private final List<BiFunction<Executable,String,Object>> methodOptionGetters
711 = Arrays.asList(this::getMethodBooleanOption, this::getMethodIntxOption,
712 this::getMethodUintxOption, this::getMethodDoubleOption,
713 this::getMethodStringOption);
714
715 public Object getMethodOption(Executable method, String name) {
716 return methodOptionGetters.stream()
717 .map(f -> f.apply(method, name))
718 .filter(x -> x != null)
719 .findAny()
720 .orElse(null);
721 }
722
723 // Sharing & archiving
724 public native int getCDSGenericHeaderMinVersion();
725 public native int getCurrentCDSVersion();
726 public native String getDefaultArchivePath();
727 public native boolean cdsMemoryMappingFailed();
728 public native boolean isSharingEnabled();
729 public native boolean isSharedClass(Class<?> c);
730 public native boolean areSharedStringsMapped();
731 public native boolean isSharedInternedString(String s);
732 public native boolean isCDSIncluded();
733 public native boolean isJFRIncluded();
734 public native boolean isDTraceIncluded();
735 public native boolean canWriteJavaHeapArchive();
736 public native void linkClass(Class<?> c);
737 public native boolean areOpenArchiveHeapObjectsMapped();
738
739 // Compiler Directive
740 public native int addCompilerDirective(String compDirect);
741 public native void removeCompilerDirective(int count);
742
743 // Handshakes
744 public native int handshakeWalkStack(Thread t, boolean all_threads);
745 public native boolean handshakeReadMonitors(Thread t);
746 public native void asyncHandshakeWalkStack(Thread t);
747
748 public native void lockAndBlock(boolean suspender);
749
750 // Returns true on linux if library has the noexecstack flag set.
751 public native boolean checkLibSpecifiesNoexecstack(String libfilename);
752
753 // Container testing
754 public native boolean isContainerized();
755 public native int validateCgroup(String procCgroups,
756 String procSelfCgroup,
757 String procSelfMountinfo);
758 public native void printOsInfo();
759 public native long hostPhysicalMemory();
760 public native long hostPhysicalSwap();
761
762 // Decoder
763 public native void disableElfSectionCache();
764
765 // Resolved Method Table
766 public native long resolvedMethodItemsCount();
767
768 // Protection Domain Table
769 public native int protectionDomainRemovedCount();
770
771 public native int getKlassMetadataSize(Class<?> c);
772
773 // ThreadSMR GC safety check for threadObj
774 public native void checkThreadObjOfTerminatingThread(Thread target);
775
776 // libc name
777 public native String getLibcName();
778
779 // Walk stack frames of current thread
780 public native void verifyFrames(boolean log, boolean updateRegisterMap);
781
782 public native boolean isJVMTIIncluded();
783
784 public native void waitUnsafe(int time_ms);
785
786 public native void lockCritical();
787
788 public native void unlockCritical();
789
790 public native void pinObject(Object o);
791
792 public native void unpinObject(Object o);
793
794 public native boolean setVirtualThreadsNotifyJvmtiMode(boolean enabled);
795
796 public native void preTouchMemory(long addr, long size);
797 }