1 /*
2 * Copyright (c) 2012, 2024, 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
25 #include "precompiled.hpp"
26 #include "cds.h"
27 #include "cds/archiveHeapLoader.hpp"
28 #include "cds/cdsConstants.hpp"
29 #include "cds/filemap.hpp"
30 #include "cds/heapShared.hpp"
31 #include "cds/metaspaceShared.hpp"
32 #include "classfile/classLoader.hpp"
33 #include "classfile/classLoaderDataGraph.hpp"
34 #include "classfile/classLoaderStats.hpp"
35 #include "classfile/classPrinter.hpp"
36 #include "classfile/javaClasses.inline.hpp"
37 #include "classfile/modules.hpp"
38 #include "classfile/stringTable.hpp"
39 #include "classfile/symbolTable.hpp"
40 #include "classfile/systemDictionary.hpp"
41 #include "classfile/vmSymbols.hpp"
42 #include "code/codeCache.hpp"
43 #include "compiler/compilationPolicy.hpp"
44 #include "compiler/compilerOracle.hpp"
45 #include "compiler/directivesParser.hpp"
46 #include "compiler/methodMatcher.hpp"
47 #include "gc/shared/concurrentGCBreakpoints.hpp"
48 #include "gc/shared/gcConfig.hpp"
49 #include "gc/shared/gcLocker.inline.hpp"
50 #include "gc/shared/genArguments.hpp"
51 #include "jvmtifiles/jvmtiEnv.hpp"
52 #include "logging/log.hpp"
53 #include "memory/iterator.hpp"
54 #include "memory/memoryReserver.hpp"
55 #include "memory/metadataFactory.hpp"
56 #include "memory/metaspace/testHelpers.hpp"
57 #include "memory/metaspaceUtils.hpp"
58 #include "memory/oopFactory.hpp"
59 #include "memory/resourceArea.hpp"
60 #include "memory/universe.hpp"
61 #include "nmt/mallocSiteTable.hpp"
62 #include "oops/array.hpp"
63 #include "oops/compressedOops.hpp"
64 #include "oops/constantPool.inline.hpp"
65 #include "oops/klass.inline.hpp"
66 #include "oops/method.inline.hpp"
67 #include "oops/methodData.inline.hpp"
68 #include "oops/objArrayKlass.hpp"
69 #include "oops/objArrayOop.inline.hpp"
70 #include "oops/oop.inline.hpp"
71 #include "oops/typeArrayOop.inline.hpp"
72 #include "prims/jvmtiEnvBase.hpp"
73 #include "prims/resolvedMethodTable.hpp"
74 #include "prims/wbtestmethods/parserTests.hpp"
75 #include "prims/whitebox.inline.hpp"
76 #include "runtime/arguments.hpp"
77 #include "runtime/atomic.hpp"
78 #include "runtime/deoptimization.hpp"
79 #include "runtime/fieldDescriptor.inline.hpp"
80 #include "runtime/flags/jvmFlag.hpp"
81 #include "runtime/flags/jvmFlagAccess.hpp"
82 #include "runtime/frame.inline.hpp"
83 #include "runtime/handles.inline.hpp"
84 #include "runtime/handshake.hpp"
85 #include "runtime/interfaceSupport.inline.hpp"
86 #include "runtime/javaCalls.hpp"
87 #include "runtime/javaThread.inline.hpp"
88 #include "runtime/jniHandles.inline.hpp"
89 #include "runtime/lockStack.hpp"
90 #include "runtime/os.hpp"
91 #include "runtime/stackFrameStream.inline.hpp"
92 #include "runtime/synchronizer.hpp"
93 #include "runtime/threadSMR.hpp"
94 #include "runtime/vframe.hpp"
95 #include "runtime/vm_version.hpp"
96 #include "services/memoryService.hpp"
97 #include "utilities/align.hpp"
98 #include "utilities/checkedCast.hpp"
99 #include "utilities/debug.hpp"
100 #include "utilities/elfFile.hpp"
101 #include "utilities/exceptions.hpp"
102 #include "utilities/macros.hpp"
103 #include "utilities/nativeCallStack.hpp"
104 #include "utilities/ostream.hpp"
105 #if INCLUDE_G1GC
106 #include "gc/g1/g1Arguments.hpp"
107 #include "gc/g1/g1CollectedHeap.inline.hpp"
108 #include "gc/g1/g1ConcurrentMark.hpp"
109 #include "gc/g1/g1ConcurrentMarkThread.inline.hpp"
110 #include "gc/g1/g1HeapRegionManager.hpp"
111 #include "gc/g1/g1HeapRegionRemSet.inline.hpp"
112 #endif // INCLUDE_G1GC
113 #if INCLUDE_PARALLELGC
114 #include "gc/parallel/parallelScavengeHeap.inline.hpp"
115 #endif // INCLUDE_PARALLELGC
116 #if INCLUDE_SERIALGC
117 #include "gc/serial/serialHeap.hpp"
118 #endif // INCLUDE_SERIALGC
119 #if INCLUDE_ZGC
120 #include "gc/z/zAddress.inline.hpp"
121 #endif // INCLUDE_ZGC
122 #if INCLUDE_JVMCI
123 #include "jvmci/jvmciEnv.hpp"
124 #include "jvmci/jvmciRuntime.hpp"
125 #endif
126 #ifdef LINUX
127 #include "cgroupSubsystem_linux.hpp"
128 #include "osContainer_linux.hpp"
129 #include "os_linux.hpp"
130 #endif
131
132 #define CHECK_JNI_EXCEPTION_(env, value) \
133 do { \
134 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \
135 THREAD->clear_pending_jni_exception_check(); \
136 if (HAS_PENDING_EXCEPTION) { \
137 return(value); \
138 } \
139 } while (0)
140
141 #define CHECK_JNI_EXCEPTION(env) \
142 do { \
143 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \
144 THREAD->clear_pending_jni_exception_check(); \
145 if (HAS_PENDING_EXCEPTION) { \
146 return; \
147 } \
148 } while (0)
149
150 bool WhiteBox::_used = false;
151 volatile bool WhiteBox::compilation_locked = false;
152
153 class VM_WhiteBoxOperation : public VM_Operation {
154 public:
155 VM_WhiteBoxOperation() { }
156 VMOp_Type type() const { return VMOp_WhiteBoxOperation; }
157 bool allow_nested_vm_operations() const { return true; }
158 };
159
160
161 WB_ENTRY(jlong, WB_GetObjectAddress(JNIEnv* env, jobject o, jobject obj))
162 return (jlong)(void*)JNIHandles::resolve(obj);
163 WB_END
164
165 WB_ENTRY(jint, WB_GetHeapOopSize(JNIEnv* env, jobject o))
166 return heapOopSize;
167 WB_END
168
169 WB_ENTRY(jint, WB_GetVMPageSize(JNIEnv* env, jobject o))
170 return (jint)os::vm_page_size();
171 WB_END
172
173 WB_ENTRY(jlong, WB_GetVMAllocationGranularity(JNIEnv* env, jobject o))
174 return os::vm_allocation_granularity();
175 WB_END
176
177 WB_ENTRY(jlong, WB_GetVMLargePageSize(JNIEnv* env, jobject o))
178 return os::large_page_size();
179 WB_END
180
181 WB_ENTRY(jstring, WB_PrintString(JNIEnv* env, jobject wb, jstring str, jint max_length))
182 ResourceMark rm(THREAD);
183 stringStream sb;
184 java_lang_String::print(JNIHandles::resolve(str), &sb, max_length);
185 oop result = java_lang_String::create_oop_from_str(sb.as_string(), THREAD);
186 return (jstring) JNIHandles::make_local(THREAD, result);
187 WB_END
188
189 WB_ENTRY(jint, WB_TakeLockAndHangInSafepoint(JNIEnv* env, jobject wb))
190 JavaThread* self = JavaThread::current();
191 // VMStatistic_lock is used to minimize interference with VM locking
192 MutexLocker mu(VMStatistic_lock);
193 VM_HangInSafepoint force_safepoint_stuck_op;
194 VMThread::execute(&force_safepoint_stuck_op);
195 ShouldNotReachHere();
196 return 0;
197 WB_END
198
199 class WBIsKlassAliveClosure : public LockedClassesDo {
200 Symbol* _name;
201 int _count;
202 public:
203 WBIsKlassAliveClosure(Symbol* name) : _name(name), _count(0) {}
204
205 void do_klass(Klass* k) {
206 Symbol* ksym = k->name();
207 if (ksym->fast_compare(_name) == 0) {
208 _count++;
209 } else if (k->is_instance_klass()) {
210 // Need special handling for hidden classes because the JVM
211 // appends "+<hex-address>" to hidden class names.
212 InstanceKlass *ik = InstanceKlass::cast(k);
213 if (ik->is_hidden()) {
214 ResourceMark rm;
215 char* k_name = ksym->as_C_string();
216 // Find the first '+' char and truncate the string at that point.
217 // NOTE: This will not work correctly if the original hidden class
218 // name contains a '+'.
219 char* plus_char = strchr(k_name, '+');
220 if (plus_char != nullptr) {
221 *plus_char = 0;
222 char* c_name = _name->as_C_string();
223 if (strcmp(c_name, k_name) == 0) {
224 _count++;
225 }
226 }
227 }
228 }
229 }
230
231 int count() const {
232 return _count;
233 }
234 };
235
236 WB_ENTRY(jint, WB_CountAliveClasses(JNIEnv* env, jobject target, jstring name))
237 oop h_name = JNIHandles::resolve(name);
238 if (h_name == nullptr) {
239 return 0;
240 }
241 Symbol* sym = java_lang_String::as_symbol(h_name);
242 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return
243
244 WBIsKlassAliveClosure closure(sym);
245 ClassLoaderDataGraph::classes_do(&closure);
246
247 // Return the count of alive classes with this name.
248 return closure.count();
249 WB_END
250
251 WB_ENTRY(jint, WB_GetSymbolRefcount(JNIEnv* env, jobject unused, jstring name))
252 oop h_name = JNIHandles::resolve(name);
253 if (h_name == nullptr) {
254 return 0;
255 }
256 Symbol* sym = java_lang_String::as_symbol(h_name);
257 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return
258 return (jint)sym->refcount();
259 WB_END
260
261
262 WB_ENTRY(void, WB_AddToBootstrapClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) {
263 #if INCLUDE_JVMTI
264 ResourceMark rm;
265 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment));
266 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION);
267 jvmtiError err = jvmti_env->AddToBootstrapClassLoaderSearch(seg);
268 assert(err == JVMTI_ERROR_NONE, "must not fail");
269 #endif
270 }
271 WB_END
272
273 WB_ENTRY(void, WB_AddToSystemClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) {
274 #if INCLUDE_JVMTI
275 ResourceMark rm;
276 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment));
277 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION);
278 jvmtiError err = jvmti_env->AddToSystemClassLoaderSearch(seg);
279 assert(err == JVMTI_ERROR_NONE, "must not fail");
280 #endif
281 }
282 WB_END
283
284
285 WB_ENTRY(jlong, WB_GetCompressedOopsMaxHeapSize(JNIEnv* env, jobject o)) {
286 return (jlong)Arguments::max_heap_for_compressed_oops();
287 }
288 WB_END
289
290 WB_ENTRY(void, WB_PrintHeapSizes(JNIEnv* env, jobject o)) {
291 tty->print_cr("Minimum heap " SIZE_FORMAT " Initial heap " SIZE_FORMAT " "
292 "Maximum heap " SIZE_FORMAT " Space alignment " SIZE_FORMAT " Heap alignment " SIZE_FORMAT,
293 MinHeapSize,
294 InitialHeapSize,
295 MaxHeapSize,
296 SpaceAlignment,
297 HeapAlignment);
298 }
299 WB_END
300
301 WB_ENTRY(void, WB_ReadFromNoaccessArea(JNIEnv* env, jobject o))
302 size_t granularity = os::vm_allocation_granularity();
303 ReservedHeapSpace rhs = HeapReserver::reserve(100 * granularity, granularity, os::vm_page_size(), nullptr);
304 VirtualSpace vs;
305 vs.initialize(rhs, 50 * granularity);
306
307 // Check if constraints are complied
308 if (!( UseCompressedOops && rhs.base() != nullptr &&
309 CompressedOops::base() != nullptr &&
310 CompressedOops::use_implicit_null_checks() )) {
311 tty->print_cr("WB_ReadFromNoaccessArea method is useless:\n "
312 "\tUseCompressedOops is %d\n"
313 "\trhs.base() is " PTR_FORMAT "\n"
314 "\tCompressedOops::base() is " PTR_FORMAT "\n"
315 "\tCompressedOops::use_implicit_null_checks() is %d",
316 UseCompressedOops,
317 p2i(rhs.base()),
318 p2i(CompressedOops::base()),
319 CompressedOops::use_implicit_null_checks());
320 return;
321 }
322 tty->print_cr("Reading from no access area... ");
323 tty->print_cr("*(vs.low_boundary() - rhs.noaccess_prefix() / 2 ) = %c",
324 *(vs.low_boundary() - rhs.noaccess_prefix() / 2 ));
325 WB_END
326
327 static jint wb_stress_virtual_space_resize(size_t reserved_space_size,
328 size_t magnitude, size_t iterations) {
329 size_t granularity = os::vm_allocation_granularity();
330 ReservedHeapSpace rhs = HeapReserver::reserve(reserved_space_size * granularity, granularity, os::vm_page_size(), nullptr);
331 VirtualSpace vs;
332 if (!vs.initialize(rhs, 0)) {
333 tty->print_cr("Failed to initialize VirtualSpace. Can't proceed.");
334 return 3;
335 }
336
337 int seed = os::random();
338 tty->print_cr("Random seed is %d", seed);
339
340 for (size_t i = 0; i < iterations; i++) {
341
342 // Whether we will shrink or grow
343 bool shrink = os::random() % 2L == 0;
344
345 // Get random delta to resize virtual space
346 size_t delta = (size_t)os::random() % magnitude;
347
348 // If we are about to shrink virtual space below zero, then expand instead
349 if (shrink && vs.committed_size() < delta) {
350 shrink = false;
351 }
352
353 // Resizing by delta
354 if (shrink) {
355 vs.shrink_by(delta);
356 } else {
357 // If expanding fails expand_by will silently return false
358 vs.expand_by(delta, true);
359 }
360 }
361 return 0;
362 }
363
364 WB_ENTRY(jint, WB_StressVirtualSpaceResize(JNIEnv* env, jobject o,
365 jlong reserved_space_size, jlong magnitude, jlong iterations))
366 tty->print_cr("reservedSpaceSize=" JLONG_FORMAT ", magnitude=" JLONG_FORMAT ", "
367 "iterations=" JLONG_FORMAT "\n", reserved_space_size, magnitude,
368 iterations);
369 if (reserved_space_size < 0 || magnitude < 0 || iterations < 0) {
370 tty->print_cr("One of variables printed above is negative. Can't proceed.\n");
371 return 1;
372 }
373
374 // sizeof(size_t) depends on whether OS is 32bit or 64bit. sizeof(jlong) is
375 // always 8 byte. That's why we should avoid overflow in case of 32bit platform.
376 if (sizeof(size_t) < sizeof(jlong)) {
377 jlong size_t_max_value = (jlong)SIZE_MAX;
378 if (reserved_space_size > size_t_max_value || magnitude > size_t_max_value
379 || iterations > size_t_max_value) {
380 tty->print_cr("One of variables printed above overflows size_t. Can't proceed.\n");
381 return 2;
382 }
383 }
384
385 return wb_stress_virtual_space_resize((size_t) reserved_space_size,
386 (size_t) magnitude, (size_t) iterations);
387 WB_END
388
389 WB_ENTRY(jboolean, WB_IsGCSupported(JNIEnv* env, jobject o, jint name))
390 return GCConfig::is_gc_supported((CollectedHeap::Name)name);
391 WB_END
392
393 WB_ENTRY(jboolean, WB_HasLibgraal(JNIEnv* env, jobject o))
394 #if INCLUDE_JVMCI
395 return JVMCI::shared_library_exists();
396 #endif
397 return false;
398 WB_END
399
400 WB_ENTRY(jboolean, WB_IsGCSupportedByJVMCICompiler(JNIEnv* env, jobject o, jint name))
401 #if INCLUDE_JVMCI
402 if (EnableJVMCI) {
403 // Enter the JVMCI env that will be used by the CompileBroker.
404 JVMCIEnv jvmciEnv(thread, __FILE__, __LINE__);
405 return jvmciEnv.init_error() == JNI_OK && jvmciEnv.runtime()->is_gc_supported(&jvmciEnv, (CollectedHeap::Name)name);
406 }
407 #endif
408 return false;
409 WB_END
410
411 WB_ENTRY(jboolean, WB_IsGCSelected(JNIEnv* env, jobject o, jint name))
412 return GCConfig::is_gc_selected((CollectedHeap::Name)name);
413 WB_END
414
415 WB_ENTRY(jboolean, WB_IsGCSelectedErgonomically(JNIEnv* env, jobject o))
416 return GCConfig::is_gc_selected_ergonomically();
417 WB_END
418
419 WB_ENTRY(jboolean, WB_isObjectInOldGen(JNIEnv* env, jobject o, jobject obj))
420 oop p = JNIHandles::resolve(obj);
421 #if INCLUDE_G1GC
422 if (UseG1GC) {
423 G1CollectedHeap* g1h = G1CollectedHeap::heap();
424 const G1HeapRegion* hr = g1h->heap_region_containing(p);
425 return hr->is_old_or_humongous();
426 }
427 #endif
428 #if INCLUDE_PARALLELGC
429 if (UseParallelGC) {
430 ParallelScavengeHeap* psh = ParallelScavengeHeap::heap();
431 return !psh->is_in_young(p);
432 }
433 #endif
434 #if INCLUDE_ZGC
435 if (UseZGC) {
436 return ZHeap::heap()->is_old(to_zaddress(p));
437 }
438 #endif
439 #if INCLUDE_SHENANDOAHGC
440 if (UseShenandoahGC) {
441 ShenandoahHeap* sh = ShenandoahHeap::heap();
442 return sh->mode()->is_generational() ? sh->is_in_old(p) : sh->is_in(p);
443 }
444 #endif
445 #if INCLUDE_SERIALGC
446 if (UseSerialGC) {
447 return !SerialHeap::heap()->is_in_young(p);
448 }
449 #endif
450 ShouldNotReachHere();
451 return false;
452 WB_END
453
454 WB_ENTRY(jlong, WB_GetObjectSize(JNIEnv* env, jobject o, jobject obj))
455 oop p = JNIHandles::resolve(obj);
456 return p->size() * HeapWordSize;
457 WB_END
458
459 WB_ENTRY(jlong, WB_GetHeapSpaceAlignment(JNIEnv* env, jobject o))
460 return (jlong)SpaceAlignment;
461 WB_END
462
463 WB_ENTRY(jlong, WB_GetHeapAlignment(JNIEnv* env, jobject o))
464 return (jlong)HeapAlignment;
465 WB_END
466
467 WB_ENTRY(jboolean, WB_SupportsConcurrentGCBreakpoints(JNIEnv* env, jobject o))
468 return Universe::heap()->supports_concurrent_gc_breakpoints();
469 WB_END
470
471 WB_ENTRY(void, WB_ConcurrentGCAcquireControl(JNIEnv* env, jobject o))
472 ConcurrentGCBreakpoints::acquire_control();
473 WB_END
474
475 WB_ENTRY(void, WB_ConcurrentGCReleaseControl(JNIEnv* env, jobject o))
476 ConcurrentGCBreakpoints::release_control();
477 WB_END
478
479 WB_ENTRY(void, WB_ConcurrentGCRunToIdle(JNIEnv* env, jobject o))
480 ConcurrentGCBreakpoints::run_to_idle();
481 WB_END
482
483 WB_ENTRY(jboolean, WB_ConcurrentGCRunTo(JNIEnv* env, jobject o, jobject at))
484 Handle h_name(THREAD, JNIHandles::resolve(at));
485 ResourceMark rm;
486 const char* c_name = java_lang_String::as_utf8_string(h_name());
487 return ConcurrentGCBreakpoints::run_to(c_name);
488 WB_END
489
490 #if INCLUDE_G1GC
491
492 WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj))
493 if (UseG1GC) {
494 G1CollectedHeap* g1h = G1CollectedHeap::heap();
495 oop result = JNIHandles::resolve(obj);
496 const G1HeapRegion* hr = g1h->heap_region_containing(result);
497 return hr->is_humongous();
498 }
499 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1IsHumongous: G1 GC is not enabled");
500 WB_END
501
502 WB_ENTRY(jboolean, WB_G1BelongsToHumongousRegion(JNIEnv* env, jobject o, jlong addr))
503 if (UseG1GC) {
504 G1CollectedHeap* g1h = G1CollectedHeap::heap();
505 const G1HeapRegion* hr = g1h->heap_region_containing((void*) addr);
506 return hr->is_humongous();
507 }
508 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToHumongousRegion: G1 GC is not enabled");
509 WB_END
510
511 WB_ENTRY(jboolean, WB_G1BelongsToFreeRegion(JNIEnv* env, jobject o, jlong addr))
512 if (UseG1GC) {
513 G1CollectedHeap* g1h = G1CollectedHeap::heap();
514 const G1HeapRegion* hr = g1h->heap_region_containing((void*) addr);
515 return hr->is_free();
516 }
517 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToFreeRegion: G1 GC is not enabled");
518 WB_END
519
520 WB_ENTRY(jlong, WB_G1NumMaxRegions(JNIEnv* env, jobject o))
521 if (UseG1GC) {
522 G1CollectedHeap* g1h = G1CollectedHeap::heap();
523 size_t nr = g1h->max_regions();
524 return (jlong)nr;
525 }
526 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumMaxRegions: G1 GC is not enabled");
527 WB_END
528
529 WB_ENTRY(jlong, WB_G1NumFreeRegions(JNIEnv* env, jobject o))
530 if (UseG1GC) {
531 G1CollectedHeap* g1h = G1CollectedHeap::heap();
532 size_t nr = g1h->num_free_regions();
533 return (jlong)nr;
534 }
535 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumFreeRegions: G1 GC is not enabled");
536 WB_END
537
538 WB_ENTRY(jboolean, WB_G1InConcurrentMark(JNIEnv* env, jobject o))
539 if (UseG1GC) {
540 G1CollectedHeap* g1h = G1CollectedHeap::heap();
541 return g1h->concurrent_mark()->cm_thread()->in_progress();
542 }
543 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1InConcurrentMark: G1 GC is not enabled");
544 WB_END
545
546 WB_ENTRY(jint, WB_G1CompletedConcurrentMarkCycles(JNIEnv* env, jobject o))
547 if (UseG1GC) {
548 G1CollectedHeap* g1h = G1CollectedHeap::heap();
549 G1ConcurrentMark* cm = g1h->concurrent_mark();
550 return cm->completed_mark_cycles();
551 }
552 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1CompletedConcurrentMarkCycles: G1 GC is not enabled");
553 WB_END
554
555 WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o))
556 if (UseG1GC) {
557 return (jint)G1HeapRegion::GrainBytes;
558 }
559 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1RegionSize: G1 GC is not enabled");
560 WB_END
561
562 WB_ENTRY(jboolean, WB_G1HasRegionsToUncommit(JNIEnv* env, jobject o))
563 if (UseG1GC) {
564 return G1CollectedHeap::heap()->has_uncommittable_regions();
565 }
566 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1HasRegionsToUncommit: G1 GC is not enabled");
567 WB_END
568
569 #endif // INCLUDE_G1GC
570
571 #if INCLUDE_PARALLELGC
572
573 WB_ENTRY(jlong, WB_PSVirtualSpaceAlignment(JNIEnv* env, jobject o))
574 if (UseParallelGC) {
575 return GenAlignment;
576 }
577 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSVirtualSpaceAlignment: Parallel GC is not enabled");
578 WB_END
579
580 WB_ENTRY(jlong, WB_PSHeapGenerationAlignment(JNIEnv* env, jobject o))
581 if (UseParallelGC) {
582 return GenAlignment;
583 }
584 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSHeapGenerationAlignment: Parallel GC is not enabled");
585 WB_END
586
587 #endif // INCLUDE_PARALLELGC
588
589 #if INCLUDE_G1GC
590
591 WB_ENTRY(jobject, WB_G1AuxiliaryMemoryUsage(JNIEnv* env))
592 if (UseG1GC) {
593 ResourceMark rm(THREAD);
594 G1CollectedHeap* g1h = G1CollectedHeap::heap();
595 MemoryUsage usage = g1h->get_auxiliary_data_memory_usage();
596 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL);
597 return JNIHandles::make_local(THREAD, h());
598 }
599 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1AuxiliaryMemoryUsage: G1 GC is not enabled");
600 WB_END
601
602 WB_ENTRY(jint, WB_G1ActiveMemoryNodeCount(JNIEnv* env, jobject o))
603 if (UseG1GC) {
604 G1NUMA* numa = G1NUMA::numa();
605 return (jint)numa->num_active_nodes();
606 }
607 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1ActiveMemoryNodeCount: G1 GC is not enabled");
608 WB_END
609
610 WB_ENTRY(jintArray, WB_G1MemoryNodeIds(JNIEnv* env, jobject o))
611 if (UseG1GC) {
612 G1NUMA* numa = G1NUMA::numa();
613 int num_node_ids = checked_cast<int>(numa->num_active_nodes());
614 const uint* node_ids = numa->node_ids();
615
616 typeArrayOop result = oopFactory::new_intArray(num_node_ids, CHECK_NULL);
617 for (int i = 0; i < num_node_ids; i++) {
618 result->int_at_put(i, checked_cast<jint>(node_ids[i]));
619 }
620 return (jintArray) JNIHandles::make_local(THREAD, result);
621 }
622 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1MemoryNodeIds: G1 GC is not enabled");
623 WB_END
624
625 class OldRegionsLivenessClosure: public G1HeapRegionClosure {
626
627 private:
628 const int _liveness;
629 size_t _total_count;
630 size_t _total_memory;
631 size_t _total_memory_to_free;
632
633 public:
634 OldRegionsLivenessClosure(int liveness) :
635 _liveness(liveness),
636 _total_count(0),
637 _total_memory(0),
638 _total_memory_to_free(0) { }
639
640 size_t total_count() { return _total_count; }
641 size_t total_memory() { return _total_memory; }
642 size_t total_memory_to_free() { return _total_memory_to_free; }
643
644 bool do_heap_region(G1HeapRegion* r) {
645 if (r->is_old()) {
646 size_t live = r->live_bytes();
647 size_t size = r->used();
648 size_t reg_size = G1HeapRegion::GrainBytes;
649 if (size > 0 && ((int)(live * 100 / size) < _liveness)) {
650 _total_memory += size;
651 ++_total_count;
652 if (size == reg_size) {
653 // We don't include non-full regions since they are unlikely included in mixed gc
654 // for testing purposes it's enough to have lowest estimation of total memory that is expected to be freed
655 _total_memory_to_free += size - live;
656 }
657 }
658 }
659 return false;
660 }
661 };
662
663
664 WB_ENTRY(jlongArray, WB_G1GetMixedGCInfo(JNIEnv* env, jobject o, jint liveness))
665 if (!UseG1GC) {
666 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1GetMixedGCInfo: G1 GC is not enabled");
667 }
668 if (liveness < 0) {
669 THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), "liveness value should be non-negative");
670 }
671
672 G1CollectedHeap* g1h = G1CollectedHeap::heap();
673 OldRegionsLivenessClosure rli(liveness);
674 g1h->heap_region_iterate(&rli);
675
676 typeArrayOop result = oopFactory::new_longArray(3, CHECK_NULL);
677 result->long_at_put(0, rli.total_count());
678 result->long_at_put(1, rli.total_memory());
679 result->long_at_put(2, rli.total_memory_to_free());
680 return (jlongArray) JNIHandles::make_local(THREAD, result);
681 WB_END
682
683 #endif // INCLUDE_G1GC
684
685 // Alloc memory using the test memory tag so that we can use that to see if
686 // NMT picks it up correctly
687 WB_ENTRY(jlong, WB_NMTMalloc(JNIEnv* env, jobject o, jlong size))
688 jlong addr = 0;
689 addr = (jlong)(uintptr_t)os::malloc(size, mtTest);
690 return addr;
691 WB_END
692
693 // Alloc memory with pseudo call stack. The test can create pseudo malloc
694 // allocation site to stress the malloc tracking.
695 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStack(JNIEnv* env, jobject o, jlong size, jint pseudo_stack))
696 address pc = (address)(size_t)pseudo_stack;
697 NativeCallStack stack(&pc, 1);
698 return (jlong)(uintptr_t)os::malloc(size, mtTest, stack);
699 WB_END
700
701 // Alloc memory with pseudo call stack and specific memory tag.
702 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStackAndType(JNIEnv* env, jobject o, jlong size, jint pseudo_stack, jint mem_tag))
703 address pc = (address)(size_t)pseudo_stack;
704 NativeCallStack stack(&pc, 1);
705 return (jlong)(uintptr_t)os::malloc(size, (MemTag)mem_tag, stack);
706 WB_END
707
708 // Free the memory allocated by NMTAllocTest
709 WB_ENTRY(void, WB_NMTFree(JNIEnv* env, jobject o, jlong mem))
710 os::free((void*)(uintptr_t)mem);
711 WB_END
712
713 WB_ENTRY(jlong, WB_NMTReserveMemory(JNIEnv* env, jobject o, jlong size))
714 return (jlong)(uintptr_t)os::reserve_memory(size, false, mtTest);
715 WB_END
716
717 WB_ENTRY(jlong, WB_NMTAttemptReserveMemoryAt(JNIEnv* env, jobject o, jlong addr, jlong size))
718 return (jlong)(uintptr_t)os::attempt_reserve_memory_at((char*)(uintptr_t)addr, (size_t)size, false, mtTest);
719 WB_END
720
721 WB_ENTRY(void, WB_NMTCommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
722 os::commit_memory((char *)(uintptr_t)addr, size, !ExecMem);
723 WB_END
724
725 WB_ENTRY(void, WB_NMTUncommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
726 os::uncommit_memory((char *)(uintptr_t)addr, size);
727 WB_END
728
729 WB_ENTRY(void, WB_NMTReleaseMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
730 os::release_memory((char *)(uintptr_t)addr, size);
731 WB_END
732
733 WB_ENTRY(jint, WB_NMTGetHashSize(JNIEnv* env, jobject o))
734 int hash_size = MallocSiteTable::hash_buckets();
735 assert(hash_size > 0, "NMT hash_size should be > 0");
736 return (jint)hash_size;
737 WB_END
738
739 WB_ENTRY(jlong, WB_NMTNewArena(JNIEnv* env, jobject o, jlong init_size))
740 Arena* arena = new (mtTest) Arena(mtTest, Arena::Tag::tag_other, size_t(init_size));
741 return (jlong)arena;
742 WB_END
743
744 WB_ENTRY(void, WB_NMTFreeArena(JNIEnv* env, jobject o, jlong arena))
745 Arena* a = (Arena*)arena;
746 delete a;
747 WB_END
748
749 WB_ENTRY(void, WB_NMTArenaMalloc(JNIEnv* env, jobject o, jlong arena, jlong size))
750 Arena* a = (Arena*)arena;
751 a->Amalloc(size_t(size));
752 WB_END
753
754 static jmethodID reflected_method_to_jmid(JavaThread* thread, JNIEnv* env, jobject method) {
755 assert(method != nullptr, "method should not be null");
756 ThreadToNativeFromVM ttn(thread);
757 return env->FromReflectedMethod(method);
758 }
759
760 // Deoptimizes all compiled frames and makes nmethods not entrant if it's requested
761 class VM_WhiteBoxDeoptimizeFrames : public VM_WhiteBoxOperation {
762 private:
763 int _result;
764 const bool _make_not_entrant;
765 public:
766 VM_WhiteBoxDeoptimizeFrames(bool make_not_entrant) :
767 _result(0), _make_not_entrant(make_not_entrant) { }
768 int result() const { return _result; }
769
770 void doit() {
771 for (JavaThreadIteratorWithHandle jtiwh; JavaThread *t = jtiwh.next(); ) {
772 if (t->has_last_Java_frame()) {
773 for (StackFrameStream fst(t, false /* update */, true /* process_frames */); !fst.is_done(); fst.next()) {
774 frame* f = fst.current();
775 if (f->can_be_deoptimized() && !f->is_deoptimized_frame()) {
776 Deoptimization::deoptimize(t, *f);
777 if (_make_not_entrant) {
778 nmethod* nm = CodeCache::find_nmethod(f->pc());
779 assert(nm != nullptr, "did not find nmethod");
780 nm->make_not_entrant();
781 }
782 ++_result;
783 }
784 }
785 }
786 }
787 }
788 };
789
790 WB_ENTRY(jint, WB_DeoptimizeFrames(JNIEnv* env, jobject o, jboolean make_not_entrant))
791 VM_WhiteBoxDeoptimizeFrames op(make_not_entrant == JNI_TRUE);
792 VMThread::execute(&op);
793 return op.result();
794 WB_END
795
796 WB_ENTRY(jboolean, WB_IsFrameDeoptimized(JNIEnv* env, jobject o, jint depth))
797 bool result = false;
798 if (thread->has_last_Java_frame()) {
799 ResourceMark rm(THREAD);
800 RegisterMap reg_map(thread,
801 RegisterMap::UpdateMap::include,
802 RegisterMap::ProcessFrames::include,
803 RegisterMap::WalkContinuation::skip);
804 javaVFrame *jvf = thread->last_java_vframe(®_map);
805 for (jint d = 0; d < depth && jvf != nullptr; d++) {
806 jvf = jvf->java_sender();
807 }
808 result = jvf != nullptr && jvf->fr().is_deoptimized_frame();
809 }
810 return result;
811 WB_END
812
813 WB_ENTRY(void, WB_DeoptimizeAll(JNIEnv* env, jobject o))
814 DeoptimizationScope deopt_scope;
815 CodeCache::mark_all_nmethods_for_deoptimization(&deopt_scope);
816 deopt_scope.deoptimize_marked();
817 WB_END
818
819 WB_ENTRY(jint, WB_DeoptimizeMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
820 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
821 int result = 0;
822 CHECK_JNI_EXCEPTION_(env, result);
823
824 DeoptimizationScope deopt_scope;
825 {
826 MutexLocker mu(Compile_lock);
827 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
828 if (is_osr) {
829 result += mh->method_holder()->mark_osr_nmethods(&deopt_scope, mh());
830 } else {
831 MutexLocker ml(NMethodState_lock, Mutex::_no_safepoint_check_flag);
832 if (mh->code() != nullptr) {
833 deopt_scope.mark(mh->code());
834 ++result;
835 }
836 }
837 CodeCache::mark_for_deoptimization(&deopt_scope, mh());
838 }
839
840 deopt_scope.deoptimize_marked();
841
842 return result;
843 WB_END
844
845 WB_ENTRY(jboolean, WB_IsMethodCompiled(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
846 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
847 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
848 MutexLocker mu(Compile_lock);
849 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
850 nmethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
851 if (code == nullptr) {
852 return JNI_FALSE;
853 }
854 return !code->is_marked_for_deoptimization();
855 WB_END
856
857 static bool is_excluded_for_compiler(AbstractCompiler* comp, methodHandle& mh) {
858 if (comp == nullptr) {
859 return true;
860 }
861 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, comp);
862 bool exclude = directive->ExcludeOption;
863 DirectivesStack::release(directive);
864 return exclude;
865 }
866
867 static bool can_be_compiled_at_level(methodHandle& mh, jboolean is_osr, int level) {
868 if (is_osr) {
869 return CompilationPolicy::can_be_osr_compiled(mh, level);
870 } else {
871 return CompilationPolicy::can_be_compiled(mh, level);
872 }
873 }
874
875 WB_ENTRY(jboolean, WB_IsMethodCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
876 if (method == nullptr || comp_level > CompilationPolicy::highest_compile_level()) {
877 return false;
878 }
879 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
880 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
881 MutexLocker mu(Compile_lock);
882 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
883
884 // The ExcludeOption directive is evaluated lazily upon compilation attempt. If a method was not tried to be compiled by
885 // a compiler, yet, the method object is not set to be not compilable by that compiler. Thus, evaluate the compiler directive
886 // to exclude a compilation of 'method'.
887 if (comp_level == CompLevel_any) {
888 // Both compilers could have ExcludeOption set. Check all combinations.
889 bool excluded_c1 = is_excluded_for_compiler(CompileBroker::compiler1(), mh);
890 bool excluded_c2 = is_excluded_for_compiler(CompileBroker::compiler2(), mh);
891 if (excluded_c1 && excluded_c2) {
892 // Compilation of 'method' excluded by both compilers.
893 return false;
894 }
895
896 if (excluded_c1) {
897 // C1 only has ExcludeOption set: Check if compilable with C2.
898 return can_be_compiled_at_level(mh, is_osr, CompLevel_full_optimization);
899 } else if (excluded_c2) {
900 // C2 only has ExcludeOption set: Check if compilable with C1.
901 return can_be_compiled_at_level(mh, is_osr, CompLevel_simple);
902 }
903 } else if (comp_level > CompLevel_none && is_excluded_for_compiler(CompileBroker::compiler((int)comp_level), mh)) {
904 // Compilation of 'method' excluded by compiler used for 'comp_level'.
905 return false;
906 }
907
908 return can_be_compiled_at_level(mh, is_osr, (int)comp_level);
909 WB_END
910
911 WB_ENTRY(jboolean, WB_IsMethodQueuedForCompilation(JNIEnv* env, jobject o, jobject method))
912 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
913 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
914 MutexLocker mu(Compile_lock);
915 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
916 return mh->queued_for_compilation();
917 WB_END
918
919 WB_ENTRY(jboolean, WB_IsIntrinsicAvailable(JNIEnv* env, jobject o, jobject method, jobject compilation_context, jint compLevel))
920 if (compLevel < CompLevel_none || compLevel > CompilationPolicy::highest_compile_level()) {
921 return false; // Intrinsic is not available on a non-existent compilation level.
922 }
923 AbstractCompiler* comp = CompileBroker::compiler((int)compLevel);
924 if (comp == nullptr) {
925 // Could have compLevel == 0, or !TieredCompilation and incompatible values of TieredStopAtLevel and compLevel.
926 tty->print_cr("WB error: no compiler for requested compilation level %d", compLevel);
927 return false;
928 }
929
930 jmethodID method_id, compilation_context_id;
931 method_id = reflected_method_to_jmid(thread, env, method);
932 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
933 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(method_id));
934
935 DirectiveSet* directive;
936 if (compilation_context != nullptr) {
937 compilation_context_id = reflected_method_to_jmid(thread, env, compilation_context);
938 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
939 methodHandle cch(THREAD, Method::checked_resolve_jmethod_id(compilation_context_id));
940 directive = DirectivesStack::getMatchingDirective(cch, comp);
941 } else {
942 // Calling with null matches default directive
943 directive = DirectivesStack::getDefaultDirective(comp);
944 }
945 bool result = comp->is_intrinsic_available(mh, directive);
946 DirectivesStack::release(directive);
947 return result;
948 WB_END
949
950 WB_ENTRY(jint, WB_GetMethodCompilationLevel(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
951 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
952 CHECK_JNI_EXCEPTION_(env, CompLevel_none);
953 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
954 nmethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
955 return (code != nullptr ? code->comp_level() : CompLevel_none);
956 WB_END
957
958 WB_ENTRY(void, WB_MakeMethodNotCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
959 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
960 CHECK_JNI_EXCEPTION(env);
961 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
962 if (is_osr) {
963 mh->set_not_osr_compilable("WhiteBox", comp_level);
964 } else {
965 mh->set_not_compilable("WhiteBox", comp_level);
966 }
967 WB_END
968
969 WB_ENTRY(jint, WB_GetMethodDecompileCount(JNIEnv* env, jobject o, jobject method))
970 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
971 CHECK_JNI_EXCEPTION_(env, 0);
972 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
973 uint cnt = 0;
974 MethodData* mdo = mh->method_data();
975 if (mdo != nullptr) {
976 cnt = mdo->decompile_count();
977 }
978 return cnt;
979 WB_END
980
981 // Get the trap count of a method for a specific reason. If the trap count for
982 // that reason did overflow, this includes the overflow trap count of the method.
983 // If 'reason' is null, the sum of the traps for all reasons will be returned.
984 // This number includes the overflow trap count if the trap count for any reason
985 // did overflow.
986 WB_ENTRY(jint, WB_GetMethodTrapCount(JNIEnv* env, jobject o, jobject method, jstring reason_obj))
987 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
988 CHECK_JNI_EXCEPTION_(env, 0);
989 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
990 uint cnt = 0;
991 MethodData* mdo = mh->method_data();
992 if (mdo != nullptr) {
993 ResourceMark rm(THREAD);
994 char* reason_str = (reason_obj == nullptr) ?
995 nullptr : java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(reason_obj));
996 bool overflow = false;
997 for (uint reason = 0; reason < mdo->trap_reason_limit(); reason++) {
998 if (reason_str != nullptr && !strcmp(reason_str, Deoptimization::trap_reason_name(reason))) {
999 cnt = mdo->trap_count(reason);
1000 // Count in the overflow trap count on overflow
1001 if (cnt == (uint)-1) {
1002 cnt = mdo->trap_count_limit() + mdo->overflow_trap_count();
1003 }
1004 break;
1005 } else if (reason_str == nullptr) {
1006 uint c = mdo->trap_count(reason);
1007 if (c == (uint)-1) {
1008 c = mdo->trap_count_limit();
1009 if (!overflow) {
1010 // Count overflow trap count just once
1011 overflow = true;
1012 c += mdo->overflow_trap_count();
1013 }
1014 }
1015 cnt += c;
1016 }
1017 }
1018 }
1019 return cnt;
1020 WB_END
1021
1022 WB_ENTRY(jint, WB_GetDeoptCount(JNIEnv* env, jobject o, jstring reason_obj, jstring action_obj))
1023 if (reason_obj == nullptr && action_obj == nullptr) {
1024 return Deoptimization::total_deoptimization_count();
1025 }
1026 ResourceMark rm(THREAD);
1027 const char *reason_str = (reason_obj == nullptr) ?
1028 nullptr : java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(reason_obj));
1029 const char *action_str = (action_obj == nullptr) ?
1030 nullptr : java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(action_obj));
1031
1032 return Deoptimization::deoptimization_count(reason_str, action_str);
1033 WB_END
1034
1035 WB_ENTRY(jint, WB_GetMethodEntryBci(JNIEnv* env, jobject o, jobject method))
1036 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1037 CHECK_JNI_EXCEPTION_(env, InvocationEntryBci);
1038 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1039 nmethod* code = mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false);
1040 return (code != nullptr && code->is_osr_method() ? code->osr_entry_bci() : InvocationEntryBci);
1041 WB_END
1042
1043 WB_ENTRY(jboolean, WB_TestSetDontInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
1044 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1045 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1046 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1047 bool result = mh->dont_inline();
1048 mh->set_dont_inline(value == JNI_TRUE);
1049 return result;
1050 WB_END
1051
1052 WB_ENTRY(jint, WB_GetCompileQueueSize(JNIEnv* env, jobject o, jint comp_level))
1053 if (comp_level == CompLevel_any) {
1054 return CompileBroker::queue_size(CompLevel_full_optimization) /* C2 */ +
1055 CompileBroker::queue_size(CompLevel_full_profile) /* C1 */;
1056 } else {
1057 return CompileBroker::queue_size(comp_level);
1058 }
1059 WB_END
1060
1061 WB_ENTRY(jboolean, WB_TestSetForceInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
1062 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1063 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1064 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1065 bool result = mh->force_inline();
1066 mh->set_force_inline(value == JNI_TRUE);
1067 return result;
1068 WB_END
1069
1070 #ifdef LINUX
1071 bool WhiteBox::validate_cgroup(const char* proc_cgroups,
1072 const char* proc_self_cgroup,
1073 const char* proc_self_mountinfo,
1074 u1* cg_flags) {
1075 CgroupInfo cg_infos[CG_INFO_LENGTH];
1076 return CgroupSubsystemFactory::determine_type(cg_infos, proc_cgroups,
1077 proc_self_cgroup,
1078 proc_self_mountinfo, cg_flags);
1079 }
1080 #endif
1081
1082 bool WhiteBox::compile_method(Method* method, int comp_level, int bci, JavaThread* THREAD) {
1083 // Screen for unavailable/bad comp level or null method
1084 AbstractCompiler* comp = CompileBroker::compiler(comp_level);
1085 if (method == nullptr) {
1086 tty->print_cr("WB error: request to compile null method");
1087 return false;
1088 }
1089 if (method->is_abstract()) {
1090 tty->print_cr("WB error: request to compile abstract method");
1091 return false;
1092 }
1093 if (comp_level > CompilationPolicy::highest_compile_level()) {
1094 tty->print_cr("WB error: invalid compilation level %d", comp_level);
1095 return false;
1096 }
1097 if (comp == nullptr) {
1098 tty->print_cr("WB error: no compiler for requested compilation level %d", comp_level);
1099 return false;
1100 }
1101
1102 // Check if compilation is blocking
1103 methodHandle mh(THREAD, method);
1104 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, comp);
1105 bool is_blocking = !directive->BackgroundCompilationOption;
1106 DirectivesStack::release(directive);
1107
1108 // Compile method and check result
1109 nmethod* nm = CompileBroker::compile_method(mh, bci, comp_level, mh, mh->invocation_count(), false, CompileTask::Reason_Whitebox, CHECK_false);
1110 MutexLocker mu(THREAD, Compile_lock);
1111 bool is_queued = mh->queued_for_compilation();
1112 if ((!is_blocking && is_queued) || nm != nullptr) {
1113 return true;
1114 }
1115 // Check code again because compilation may be finished before Compile_lock is acquired.
1116 if (bci == InvocationEntryBci) {
1117 nmethod* code = mh->code();
1118 if (code != nullptr) {
1119 return true;
1120 }
1121 } else if (mh->lookup_osr_nmethod_for(bci, comp_level, false) != nullptr) {
1122 return true;
1123 }
1124 tty->print("WB error: failed to %s compile at level %d method ", is_blocking ? "blocking" : "", comp_level);
1125 mh->print_short_name(tty);
1126 tty->cr();
1127 if (is_blocking && is_queued) {
1128 tty->print_cr("WB error: blocking compilation is still in queue!");
1129 }
1130 return false;
1131 }
1132
1133 size_t WhiteBox::get_in_use_monitor_count() {
1134 return ObjectSynchronizer::_in_use_list.count();
1135 }
1136
1137 WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level, jint bci))
1138 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1139 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1140 return WhiteBox::compile_method(Method::checked_resolve_jmethod_id(jmid), comp_level, bci, THREAD);
1141 WB_END
1142
1143 WB_ENTRY(jboolean, WB_EnqueueInitializerForCompilation(JNIEnv* env, jobject o, jclass klass, jint comp_level))
1144 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1145 Method* clinit = ik->class_initializer();
1146 if (clinit == nullptr || clinit->method_holder()->is_not_initialized()) {
1147 return false;
1148 }
1149 return WhiteBox::compile_method(clinit, comp_level, InvocationEntryBci, THREAD);
1150 WB_END
1151
1152 WB_ENTRY(jboolean, WB_ShouldPrintAssembly(JNIEnv* env, jobject o, jobject method, jint comp_level))
1153 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1154 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1155
1156 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1157 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, CompileBroker::compiler(comp_level));
1158 bool result = directive->PrintAssemblyOption;
1159 DirectivesStack::release(directive);
1160
1161 return result;
1162 WB_END
1163
1164 WB_ENTRY(jint, WB_MatchesInline(JNIEnv* env, jobject o, jobject method, jstring pattern))
1165 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1166 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1167
1168 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1169
1170 ResourceMark rm(THREAD);
1171 const char* error_msg = nullptr;
1172 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
1173 InlineMatcher* m = InlineMatcher::parse_inline_pattern(method_str, error_msg);
1174
1175 if (m == nullptr) {
1176 assert(error_msg != nullptr, "Always have an error message");
1177 tty->print_cr("Got error: %s", error_msg);
1178 return -1; // Pattern failed
1179 }
1180
1181 // Pattern works - now check if it matches
1182 int result;
1183 if (m->match(mh, InlineMatcher::force_inline)) {
1184 result = 2; // Force inline match
1185 } else if (m->match(mh, InlineMatcher::dont_inline)) {
1186 result = 1; // Dont inline match
1187 } else {
1188 result = 0; // No match
1189 }
1190 delete m;
1191 return result;
1192 WB_END
1193
1194 WB_ENTRY(jint, WB_MatchesMethod(JNIEnv* env, jobject o, jobject method, jstring pattern))
1195 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1196 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1197
1198 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1199
1200 ResourceMark rm;
1201 char* method_str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(pattern));
1202
1203 const char* error_msg = nullptr;
1204
1205 BasicMatcher* m = BasicMatcher::parse_method_pattern(method_str, error_msg, false);
1206 if (m == nullptr) {
1207 assert(error_msg != nullptr, "Must have error_msg");
1208 tty->print_cr("Got error: %s", error_msg);
1209 return -1;
1210 }
1211
1212 // Pattern works - now check if it matches
1213 int result = m->matches(mh);
1214 delete m;
1215 assert(result == 0 || result == 1, "Result out of range");
1216 return result;
1217 WB_END
1218
1219 WB_ENTRY(void, WB_MarkMethodProfiled(JNIEnv* env, jobject o, jobject method))
1220 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1221 CHECK_JNI_EXCEPTION(env);
1222 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1223
1224 MethodData* mdo = mh->method_data();
1225 if (mdo == nullptr) {
1226 Method::build_profiling_method_data(mh, CHECK_AND_CLEAR);
1227 mdo = mh->method_data();
1228 }
1229 mdo->init();
1230 InvocationCounter* icnt = mdo->invocation_counter();
1231 InvocationCounter* bcnt = mdo->backedge_counter();
1232 // set i-counter according to CompilationPolicy::is_method_profiled
1233 icnt->set(Tier4MinInvocationThreshold);
1234 bcnt->set(Tier4CompileThreshold);
1235 WB_END
1236
1237 WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method))
1238 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1239 CHECK_JNI_EXCEPTION(env);
1240 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1241 MutexLocker mu(THREAD, Compile_lock);
1242 MethodData* mdo = mh->method_data();
1243 MethodCounters* mcs = mh->method_counters();
1244
1245 if (mdo != nullptr) {
1246 mdo->init();
1247 ResourceMark rm(THREAD);
1248 int arg_count = mdo->method()->size_of_parameters();
1249 for (int i = 0; i < arg_count; i++) {
1250 mdo->set_arg_modified(i, 0);
1251 }
1252 mdo->clean_method_data(/*always_clean*/true);
1253 }
1254
1255 mh->clear_is_not_c1_compilable();
1256 mh->clear_is_not_c2_compilable();
1257 mh->clear_is_not_c2_osr_compilable();
1258 NOT_PRODUCT(mh->set_compiled_invocation_count(0));
1259 if (mcs != nullptr) {
1260 mcs->clear_counters();
1261 }
1262 WB_END
1263
1264 template <typename T, int type_enum>
1265 static bool GetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value) {
1266 if (name == nullptr) {
1267 return false;
1268 }
1269 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1270 const char* flag_name = env->GetStringUTFChars(name, nullptr);
1271 CHECK_JNI_EXCEPTION_(env, false);
1272 const JVMFlag* flag = JVMFlag::find_declared_flag(flag_name);
1273 JVMFlag::Error result = JVMFlagAccess::get<T, type_enum>(flag, value);
1274 env->ReleaseStringUTFChars(name, flag_name);
1275 return (result == JVMFlag::SUCCESS);
1276 }
1277
1278 template <typename T, int type_enum>
1279 static bool SetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value) {
1280 if (name == nullptr) {
1281 return false;
1282 }
1283 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1284 const char* flag_name = env->GetStringUTFChars(name, nullptr);
1285 CHECK_JNI_EXCEPTION_(env, false);
1286 JVMFlag* flag = JVMFlag::find_flag(flag_name);
1287 JVMFlag::Error result = JVMFlagAccess::set<T, type_enum>(flag, value, JVMFlagOrigin::INTERNAL);
1288 env->ReleaseStringUTFChars(name, flag_name);
1289 return (result == JVMFlag::SUCCESS);
1290 }
1291
1292 template <typename T>
1293 static jobject box(JavaThread* thread, JNIEnv* env, Symbol* name, Symbol* sig, T value) {
1294 ResourceMark rm(thread);
1295 jclass clazz = env->FindClass(name->as_C_string());
1296 CHECK_JNI_EXCEPTION_(env, nullptr);
1297 jmethodID methodID = env->GetStaticMethodID(clazz,
1298 vmSymbols::valueOf_name()->as_C_string(),
1299 sig->as_C_string());
1300 CHECK_JNI_EXCEPTION_(env, nullptr);
1301 jobject result = env->CallStaticObjectMethod(clazz, methodID, value);
1302 CHECK_JNI_EXCEPTION_(env, nullptr);
1303 return result;
1304 }
1305
1306 static jobject booleanBox(JavaThread* thread, JNIEnv* env, jboolean value) {
1307 return box(thread, env, vmSymbols::java_lang_Boolean(), vmSymbols::Boolean_valueOf_signature(), value);
1308 }
1309 static jobject integerBox(JavaThread* thread, JNIEnv* env, jint value) {
1310 return box(thread, env, vmSymbols::java_lang_Integer(), vmSymbols::Integer_valueOf_signature(), value);
1311 }
1312 static jobject longBox(JavaThread* thread, JNIEnv* env, jlong value) {
1313 return box(thread, env, vmSymbols::java_lang_Long(), vmSymbols::Long_valueOf_signature(), value);
1314 }
1315 /* static jobject floatBox(JavaThread* thread, JNIEnv* env, jfloat value) {
1316 return box(thread, env, vmSymbols::java_lang_Float(), vmSymbols::Float_valueOf_signature(), value);
1317 }*/
1318 static jobject doubleBox(JavaThread* thread, JNIEnv* env, jdouble value) {
1319 return box(thread, env, vmSymbols::java_lang_Double(), vmSymbols::Double_valueOf_signature(), value);
1320 }
1321
1322 static const JVMFlag* getVMFlag(JavaThread* thread, JNIEnv* env, jstring name) {
1323 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1324 const char* flag_name = env->GetStringUTFChars(name, nullptr);
1325 CHECK_JNI_EXCEPTION_(env, nullptr);
1326 const JVMFlag* result = JVMFlag::find_declared_flag(flag_name);
1327 env->ReleaseStringUTFChars(name, flag_name);
1328 return result;
1329 }
1330
1331 WB_ENTRY(jboolean, WB_IsConstantVMFlag(JNIEnv* env, jobject o, jstring name))
1332 const JVMFlag* flag = getVMFlag(thread, env, name);
1333 return (flag != nullptr) && flag->is_constant_in_binary();
1334 WB_END
1335
1336 WB_ENTRY(jboolean, WB_IsDefaultVMFlag(JNIEnv* env, jobject o, jstring name))
1337 const JVMFlag* flag = getVMFlag(thread, env, name);
1338 return (flag != nullptr) && flag->is_default();
1339 WB_END
1340
1341 WB_ENTRY(jboolean, WB_IsLockedVMFlag(JNIEnv* env, jobject o, jstring name))
1342 const JVMFlag* flag = getVMFlag(thread, env, name);
1343 return (flag != nullptr) && !(flag->is_unlocked() || flag->is_unlocker());
1344 WB_END
1345
1346 WB_ENTRY(jobject, WB_GetBooleanVMFlag(JNIEnv* env, jobject o, jstring name))
1347 bool result;
1348 if (GetVMFlag <JVM_FLAG_TYPE(bool)> (thread, env, name, &result)) {
1349 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1350 return booleanBox(thread, env, result);
1351 }
1352 return nullptr;
1353 WB_END
1354
1355 template <typename T, int type_enum>
1356 jobject GetVMFlag_longBox(JNIEnv* env, JavaThread* thread, jstring name) {
1357 T result;
1358 if (GetVMFlag <T, type_enum> (thread, env, name, &result)) {
1359 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1360 return longBox(thread, env, result);
1361 }
1362 return nullptr;
1363 }
1364
1365 WB_ENTRY(jobject, WB_GetIntVMFlag(JNIEnv* env, jobject o, jstring name))
1366 return GetVMFlag_longBox<JVM_FLAG_TYPE(int)>(env, thread, name);
1367 WB_END
1368
1369 WB_ENTRY(jobject, WB_GetUintVMFlag(JNIEnv* env, jobject o, jstring name))
1370 return GetVMFlag_longBox<JVM_FLAG_TYPE(uint)>(env, thread, name);
1371 WB_END
1372
1373 WB_ENTRY(jobject, WB_GetIntxVMFlag(JNIEnv* env, jobject o, jstring name))
1374 return GetVMFlag_longBox<JVM_FLAG_TYPE(intx)>(env, thread, name);
1375 WB_END
1376
1377 WB_ENTRY(jobject, WB_GetUintxVMFlag(JNIEnv* env, jobject o, jstring name))
1378 return GetVMFlag_longBox<JVM_FLAG_TYPE(uintx)>(env, thread, name);
1379 WB_END
1380
1381 WB_ENTRY(jobject, WB_GetUint64VMFlag(JNIEnv* env, jobject o, jstring name))
1382 return GetVMFlag_longBox<JVM_FLAG_TYPE(uint64_t)>(env, thread, name);
1383 WB_END
1384
1385 WB_ENTRY(jobject, WB_GetSizeTVMFlag(JNIEnv* env, jobject o, jstring name))
1386 return GetVMFlag_longBox<JVM_FLAG_TYPE(size_t)>(env, thread, name);
1387 WB_END
1388
1389 WB_ENTRY(jobject, WB_GetDoubleVMFlag(JNIEnv* env, jobject o, jstring name))
1390 double result;
1391 if (GetVMFlag <JVM_FLAG_TYPE(double)> (thread, env, name, &result)) {
1392 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1393 return doubleBox(thread, env, result);
1394 }
1395 return nullptr;
1396 WB_END
1397
1398 WB_ENTRY(jstring, WB_GetStringVMFlag(JNIEnv* env, jobject o, jstring name))
1399 ccstr ccstrResult;
1400 if (GetVMFlag <JVM_FLAG_TYPE(ccstr)> (thread, env, name, &ccstrResult)) {
1401 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1402 jstring result = env->NewStringUTF(ccstrResult);
1403 CHECK_JNI_EXCEPTION_(env, nullptr);
1404 return result;
1405 }
1406 return nullptr;
1407 WB_END
1408
1409 WB_ENTRY(void, WB_SetBooleanVMFlag(JNIEnv* env, jobject o, jstring name, jboolean value))
1410 bool result = value == JNI_TRUE ? true : false;
1411 SetVMFlag <JVM_FLAG_TYPE(bool)> (thread, env, name, &result);
1412 WB_END
1413
1414 WB_ENTRY(void, WB_SetIntVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1415 int result = checked_cast<int>(value);
1416 SetVMFlag <JVM_FLAG_TYPE(int)> (thread, env, name, &result);
1417 WB_END
1418
1419 WB_ENTRY(void, WB_SetUintVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1420 uint result = checked_cast<uint>(value);
1421 SetVMFlag <JVM_FLAG_TYPE(uint)> (thread, env, name, &result);
1422 WB_END
1423
1424 WB_ENTRY(void, WB_SetIntxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1425 intx result = value;
1426 SetVMFlag <JVM_FLAG_TYPE(intx)> (thread, env, name, &result);
1427 WB_END
1428
1429 WB_ENTRY(void, WB_SetUintxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1430 uintx result = value;
1431 SetVMFlag <JVM_FLAG_TYPE(uintx)> (thread, env, name, &result);
1432 WB_END
1433
1434 WB_ENTRY(void, WB_SetUint64VMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1435 uint64_t result = value;
1436 SetVMFlag <JVM_FLAG_TYPE(uint64_t)> (thread, env, name, &result);
1437 WB_END
1438
1439 WB_ENTRY(void, WB_SetSizeTVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
1440 size_t result = value;
1441 SetVMFlag <JVM_FLAG_TYPE(size_t)> (thread, env, name, &result);
1442 WB_END
1443
1444 WB_ENTRY(void, WB_SetDoubleVMFlag(JNIEnv* env, jobject o, jstring name, jdouble value))
1445 double result = value;
1446 SetVMFlag <JVM_FLAG_TYPE(double)> (thread, env, name, &result);
1447 WB_END
1448
1449 WB_ENTRY(void, WB_SetStringVMFlag(JNIEnv* env, jobject o, jstring name, jstring value))
1450 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
1451 const char* ccstrValue;
1452 if (value == nullptr) {
1453 ccstrValue = nullptr;
1454 }
1455 else {
1456 ccstrValue = env->GetStringUTFChars(value, nullptr);
1457 CHECK_JNI_EXCEPTION(env);
1458 }
1459 {
1460 ccstr param = ccstrValue;
1461 ThreadInVMfromNative ttvfn(thread); // back to VM
1462 if (SetVMFlag <JVM_FLAG_TYPE(ccstr)> (thread, env, name, ¶m)) {
1463 assert(param == nullptr, "old value is freed automatically and not returned");
1464 }
1465 }
1466 if (value != nullptr) {
1467 env->ReleaseStringUTFChars(value, ccstrValue);
1468 }
1469 WB_END
1470
1471 WB_ENTRY(void, WB_LockCompilation(JNIEnv* env, jobject o, jlong timeout))
1472 WhiteBox::compilation_locked = true;
1473 WB_END
1474
1475 WB_ENTRY(void, WB_UnlockCompilation(JNIEnv* env, jobject o))
1476 MonitorLocker mo(Compilation_lock, Mutex::_no_safepoint_check_flag);
1477 WhiteBox::compilation_locked = false;
1478 mo.notify_all();
1479 WB_END
1480
1481 WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString))
1482 ResourceMark rm(THREAD);
1483 int len;
1484 jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len, CHECK_false);
1485 return (StringTable::lookup(name, len) != nullptr);
1486 WB_END
1487
1488 WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o))
1489 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(true);
1490 Universe::heap()->collect(GCCause::_wb_full_gc);
1491 #if INCLUDE_G1GC || INCLUDE_SERIALGC
1492 if (UseG1GC || UseSerialGC) {
1493 // Needs to be cleared explicitly for G1 and Serial GC.
1494 Universe::heap()->soft_ref_policy()->set_should_clear_all_soft_refs(false);
1495 }
1496 #endif // INCLUDE_G1GC || INCLUDE_SERIALGC
1497 WB_END
1498
1499 WB_ENTRY(void, WB_YoungGC(JNIEnv* env, jobject o))
1500 Universe::heap()->collect(GCCause::_wb_young_gc);
1501 WB_END
1502
1503 WB_ENTRY(void, WB_ReadReservedMemory(JNIEnv* env, jobject o))
1504 // static+volatile in order to force the read to happen
1505 // (not be eliminated by the compiler)
1506 static char c;
1507 static volatile char* p;
1508
1509 p = os::reserve_memory(os::vm_allocation_granularity());
1510 if (p == nullptr) {
1511 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), "Failed to reserve memory");
1512 }
1513
1514 c = *p;
1515 WB_END
1516
1517 WB_ENTRY(jstring, WB_GetCPUFeatures(JNIEnv* env, jobject o))
1518 const char* features = VM_Version::features_string();
1519 ThreadToNativeFromVM ttn(thread);
1520 jstring features_string = env->NewStringUTF(features);
1521
1522 CHECK_JNI_EXCEPTION_(env, nullptr);
1523
1524 return features_string;
1525 WB_END
1526
1527 CodeBlobType WhiteBox::get_blob_type(const CodeBlob* code) {
1528 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1529 return CodeCache::get_code_heap(code)->code_blob_type();
1530 }
1531
1532 CodeHeap* WhiteBox::get_code_heap(CodeBlobType blob_type) {
1533 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1534 return CodeCache::get_code_heap(blob_type);
1535 }
1536
1537 struct CodeBlobStub {
1538 CodeBlobStub(const CodeBlob* blob) :
1539 name(os::strdup(blob->name())),
1540 size(blob->size()),
1541 blob_type(static_cast<jint>(WhiteBox::get_blob_type(blob))),
1542 address((jlong) blob) { }
1543 ~CodeBlobStub() { os::free((void*) name); }
1544 const char* const name;
1545 const jint size;
1546 const jint blob_type;
1547 const jlong address;
1548 };
1549
1550 static jobjectArray codeBlob2objectArray(JavaThread* thread, JNIEnv* env, CodeBlobStub* cb) {
1551 ResourceMark rm;
1552 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1553 CHECK_JNI_EXCEPTION_(env, nullptr);
1554 jobjectArray result = env->NewObjectArray(4, clazz, nullptr);
1555
1556 jstring name = env->NewStringUTF(cb->name);
1557 CHECK_JNI_EXCEPTION_(env, nullptr);
1558 env->SetObjectArrayElement(result, 0, name);
1559
1560 jobject obj = integerBox(thread, env, cb->size);
1561 CHECK_JNI_EXCEPTION_(env, nullptr);
1562 env->SetObjectArrayElement(result, 1, obj);
1563
1564 obj = integerBox(thread, env, cb->blob_type);
1565 CHECK_JNI_EXCEPTION_(env, nullptr);
1566 env->SetObjectArrayElement(result, 2, obj);
1567
1568 obj = longBox(thread, env, cb->address);
1569 CHECK_JNI_EXCEPTION_(env, nullptr);
1570 env->SetObjectArrayElement(result, 3, obj);
1571
1572 return result;
1573 }
1574
1575 WB_ENTRY(jobjectArray, WB_GetNMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
1576 ResourceMark rm(THREAD);
1577 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1578 CHECK_JNI_EXCEPTION_(env, nullptr);
1579 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1580 nmethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
1581 jobjectArray result = nullptr;
1582 if (code == nullptr) {
1583 return result;
1584 }
1585 int comp_level = code->comp_level();
1586 int insts_size = code->insts_size();
1587
1588 ThreadToNativeFromVM ttn(thread);
1589 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1590 CHECK_JNI_EXCEPTION_(env, nullptr);
1591 result = env->NewObjectArray(5, clazz, nullptr);
1592 if (result == nullptr) {
1593 return result;
1594 }
1595
1596 CodeBlobStub stub(code);
1597 jobjectArray codeBlob = codeBlob2objectArray(thread, env, &stub);
1598 CHECK_JNI_EXCEPTION_(env, nullptr);
1599 env->SetObjectArrayElement(result, 0, codeBlob);
1600
1601 jobject level = integerBox(thread, env, comp_level);
1602 CHECK_JNI_EXCEPTION_(env, nullptr);
1603 env->SetObjectArrayElement(result, 1, level);
1604
1605 jbyteArray insts = env->NewByteArray(insts_size);
1606 CHECK_JNI_EXCEPTION_(env, nullptr);
1607 env->SetByteArrayRegion(insts, 0, insts_size, (jbyte*) code->insts_begin());
1608 env->SetObjectArrayElement(result, 2, insts);
1609
1610 jobject id = integerBox(thread, env, code->compile_id());
1611 CHECK_JNI_EXCEPTION_(env, nullptr);
1612 env->SetObjectArrayElement(result, 3, id);
1613
1614 jobject entry_point = longBox(thread, env, (jlong) code->entry_point());
1615 CHECK_JNI_EXCEPTION_(env, nullptr);
1616 env->SetObjectArrayElement(result, 4, entry_point);
1617
1618 return result;
1619 WB_END
1620
1621 CodeBlob* WhiteBox::allocate_code_blob(int size, CodeBlobType blob_type) {
1622 guarantee(WhiteBoxAPI, "internal testing API :: WhiteBox has to be enabled");
1623 BufferBlob* blob;
1624 int full_size = CodeBlob::align_code_offset(sizeof(BufferBlob));
1625 if (full_size < size) {
1626 full_size += align_up(size - full_size, oopSize);
1627 }
1628 {
1629 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1630 blob = (BufferBlob*) CodeCache::allocate(full_size, blob_type);
1631 if (blob != nullptr) {
1632 ::new (blob) BufferBlob("WB::DummyBlob", CodeBlobKind::Buffer, full_size);
1633 }
1634 }
1635 // Track memory usage statistic after releasing CodeCache_lock
1636 MemoryService::track_code_cache_memory_usage();
1637 return blob;
1638 }
1639
1640 WB_ENTRY(jlong, WB_AllocateCodeBlob(JNIEnv* env, jobject o, jint size, jint blob_type))
1641 if (size < 0) {
1642 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1643 err_msg("WB_AllocateCodeBlob: size is negative: " INT32_FORMAT, size));
1644 }
1645 return (jlong) WhiteBox::allocate_code_blob(size, static_cast<CodeBlobType>(blob_type));
1646 WB_END
1647
1648 WB_ENTRY(void, WB_FreeCodeBlob(JNIEnv* env, jobject o, jlong addr))
1649 if (addr == 0) {
1650 return;
1651 }
1652 BufferBlob::free((BufferBlob*) addr);
1653 WB_END
1654
1655 WB_ENTRY(jobjectArray, WB_GetCodeHeapEntries(JNIEnv* env, jobject o, jint blob_type))
1656 ResourceMark rm;
1657 GrowableArray<CodeBlobStub*> blobs;
1658 {
1659 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
1660 CodeHeap* heap = WhiteBox::get_code_heap(static_cast<CodeBlobType>(blob_type));
1661 if (heap == nullptr) {
1662 return nullptr;
1663 }
1664 for (CodeBlob* cb = (CodeBlob*) heap->first();
1665 cb != nullptr; cb = (CodeBlob*) heap->next(cb)) {
1666 CodeBlobStub* stub = NEW_RESOURCE_OBJ(CodeBlobStub);
1667 new (stub) CodeBlobStub(cb);
1668 blobs.append(stub);
1669 }
1670 }
1671 ThreadToNativeFromVM ttn(thread);
1672 jobjectArray result = nullptr;
1673 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
1674 CHECK_JNI_EXCEPTION_(env, nullptr);
1675 result = env->NewObjectArray(blobs.length(), clazz, nullptr);
1676 CHECK_JNI_EXCEPTION_(env, nullptr);
1677 if (result == nullptr) {
1678 return result;
1679 }
1680 int i = 0;
1681 for (GrowableArrayIterator<CodeBlobStub*> it = blobs.begin();
1682 it != blobs.end(); ++it) {
1683 jobjectArray obj = codeBlob2objectArray(thread, env, *it);
1684 CHECK_JNI_EXCEPTION_(env, nullptr);
1685 env->SetObjectArrayElement(result, i, obj);
1686 CHECK_JNI_EXCEPTION_(env, nullptr);
1687 ++i;
1688 }
1689 return result;
1690 WB_END
1691
1692 WB_ENTRY(jint, WB_GetCompilationActivityMode(JNIEnv* env, jobject o))
1693 return CompileBroker::get_compilation_activity_mode();
1694 WB_END
1695
1696 WB_ENTRY(jobjectArray, WB_GetCodeBlob(JNIEnv* env, jobject o, jlong addr))
1697 if (addr == 0) {
1698 THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(),
1699 "WB_GetCodeBlob: addr is null");
1700 }
1701 ThreadToNativeFromVM ttn(thread);
1702 CodeBlobStub stub((CodeBlob*) addr);
1703 return codeBlob2objectArray(thread, env, &stub);
1704 WB_END
1705
1706 WB_ENTRY(jlong, WB_GetMethodData(JNIEnv* env, jobject wv, jobject method))
1707 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1708 CHECK_JNI_EXCEPTION_(env, 0);
1709 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
1710 return (jlong) mh->method_data();
1711 WB_END
1712
1713 WB_ENTRY(jlong, WB_GetThreadStackSize(JNIEnv* env, jobject o))
1714 return (jlong) thread->stack_size();
1715 WB_END
1716
1717 WB_ENTRY(jlong, WB_GetThreadRemainingStackSize(JNIEnv* env, jobject o))
1718 return (jlong) thread->stack_overflow_state()->stack_available(
1719 os::current_stack_pointer()) - (jlong)StackOverflow::stack_shadow_zone_size();
1720 WB_END
1721
1722
1723 int WhiteBox::array_bytes_to_length(size_t bytes) {
1724 return Array<u1>::bytes_to_length(bytes);
1725 }
1726
1727 ///////////////
1728 // MetaspaceTestContext and MetaspaceTestArena
1729 WB_ENTRY(jlong, WB_CreateMetaspaceTestContext(JNIEnv* env, jobject wb, jlong commit_limit, jlong reserve_limit))
1730 assert(is_aligned(commit_limit, BytesPerWord),
1731 "WB_CreateMetaspaceTestContext: commit_limit is not a multiple of the system word byte size");
1732 assert(is_aligned(reserve_limit, BytesPerWord),
1733 "WB_CreateMetaspaceTestContext: reserve_limit is not a multiple of the system word byte size");
1734 metaspace::MetaspaceTestContext* context =
1735 new metaspace::MetaspaceTestContext("whitebox-metaspace-context", (size_t) commit_limit / BytesPerWord,
1736 (size_t) reserve_limit / BytesPerWord);
1737 return (jlong)p2i(context);
1738 WB_END
1739
1740 WB_ENTRY(void, WB_DestroyMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1741 delete (metaspace::MetaspaceTestContext*) context;
1742 WB_END
1743
1744 WB_ENTRY(void, WB_PurgeMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1745 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1746 context0->purge_area();
1747 WB_END
1748
1749 WB_ENTRY(void, WB_PrintMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1750 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1751 context0->print_on(tty);
1752 WB_END
1753
1754 WB_ENTRY(jlong, WB_GetTotalCommittedBytesInMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1755 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1756 return (jlong)context0->committed_words() * BytesPerWord;
1757 WB_END
1758
1759 WB_ENTRY(jlong, WB_GetTotalUsedBytesInMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1760 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1761 return (jlong)context0->used_words() * BytesPerWord;
1762 WB_END
1763
1764 WB_ENTRY(jlong, WB_CreateArenaInTestContext(JNIEnv* env, jobject wb, jlong context, jboolean is_micro))
1765 const Metaspace::MetaspaceType type = is_micro ? Metaspace::ClassMirrorHolderMetaspaceType : Metaspace::StandardMetaspaceType;
1766 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1767 return (jlong)p2i(context0->create_arena(type));
1768 WB_END
1769
1770 WB_ENTRY(void, WB_DestroyMetaspaceTestArena(JNIEnv* env, jobject wb, jlong arena))
1771 delete (metaspace::MetaspaceTestArena*) arena;
1772 WB_END
1773
1774 WB_ENTRY(jlong, WB_AllocateFromMetaspaceTestArena(JNIEnv* env, jobject wb, jlong arena, jlong size))
1775 assert(is_aligned(size, BytesPerWord),
1776 "WB_AllocateFromMetaspaceTestArena: size is not a multiple of the system word byte size");
1777 metaspace::MetaspaceTestArena *arena0 = (metaspace::MetaspaceTestArena *)arena;
1778 MetaWord *p = arena0->allocate((size_t) size / BytesPerWord);
1779 return (jlong)p2i(p);
1780 WB_END
1781
1782 WB_ENTRY(void, WB_DeallocateToMetaspaceTestArena(JNIEnv* env, jobject wb, jlong arena, jlong p, jlong size))
1783 assert(is_aligned(size, BytesPerWord),
1784 "WB_DeallocateToMetaspaceTestArena: size is not a multiple of the system word byte size");
1785 metaspace::MetaspaceTestArena* arena0 = (metaspace::MetaspaceTestArena*) arena;
1786 arena0->deallocate((MetaWord*)p, (size_t) size / BytesPerWord);
1787 WB_END
1788
1789 WB_ENTRY(jlong, WB_GetMaxMetaspaceAllocationSize(JNIEnv* env, jobject wb))
1790 return (jlong) Metaspace::max_allocation_word_size() * BytesPerWord;
1791 WB_END
1792
1793 WB_ENTRY(jlong, WB_WordSize(JNIEnv* env))
1794 return (jlong)BytesPerWord;
1795 WB_END
1796
1797 WB_ENTRY(jlong, WB_RootChunkWordSize(JNIEnv* env))
1798 return (jlong)Metaspace::reserve_alignment_words();
1799 WB_END
1800
1801 //////////////
1802
1803 WB_ENTRY(jlong, WB_AllocateMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong size))
1804 if (size < 0) {
1805 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1806 err_msg("WB_AllocateMetaspace: size is negative: " JLONG_FORMAT, size));
1807 }
1808
1809 oop class_loader_oop = JNIHandles::resolve(class_loader);
1810 ClassLoaderData* cld = class_loader_oop != nullptr
1811 ? java_lang_ClassLoader::loader_data_acquire(class_loader_oop)
1812 : ClassLoaderData::the_null_class_loader_data();
1813
1814 void* metadata = MetadataFactory::new_array<u1>(cld, WhiteBox::array_bytes_to_length((size_t)size), thread);
1815
1816 return (jlong)(uintptr_t)metadata;
1817 WB_END
1818
1819 WB_ENTRY(void, WB_DefineModule(JNIEnv* env, jobject o, jobject module, jboolean is_open,
1820 jstring version, jstring location, jobjectArray packages))
1821 Handle h_module (THREAD, JNIHandles::resolve(module));
1822 Modules::define_module(h_module, is_open, version, location, packages, CHECK);
1823 WB_END
1824
1825 WB_ENTRY(void, WB_AddModuleExports(JNIEnv* env, jobject o, jobject from_module, jstring package, jobject to_module))
1826 Handle h_from_module (THREAD, JNIHandles::resolve(from_module));
1827 Handle h_to_module (THREAD, JNIHandles::resolve(to_module));
1828 Modules::add_module_exports_qualified(h_from_module, package, h_to_module, CHECK);
1829 WB_END
1830
1831 WB_ENTRY(void, WB_AddModuleExportsToAllUnnamed(JNIEnv* env, jobject o, jclass module, jstring package))
1832 Handle h_module (THREAD, JNIHandles::resolve(module));
1833 Modules::add_module_exports_to_all_unnamed(h_module, package, CHECK);
1834 WB_END
1835
1836 WB_ENTRY(void, WB_AddModuleExportsToAll(JNIEnv* env, jobject o, jclass module, jstring package))
1837 Handle h_module (THREAD, JNIHandles::resolve(module));
1838 Modules::add_module_exports(h_module, package, Handle(), CHECK);
1839 WB_END
1840
1841 WB_ENTRY(void, WB_AddReadsModule(JNIEnv* env, jobject o, jobject from_module, jobject source_module))
1842 Handle h_from_module (THREAD, JNIHandles::resolve(from_module));
1843 Handle h_source_module (THREAD, JNIHandles::resolve(source_module));
1844 Modules::add_reads_module(h_from_module, h_source_module, CHECK);
1845 WB_END
1846
1847 WB_ENTRY(jlong, WB_IncMetaspaceCapacityUntilGC(JNIEnv* env, jobject wb, jlong inc))
1848 if (inc < 0) {
1849 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1850 err_msg("WB_IncMetaspaceCapacityUntilGC: inc is negative: " JLONG_FORMAT, inc));
1851 }
1852
1853 jlong max_size_t = (jlong) ((size_t) -1);
1854 if (inc > max_size_t) {
1855 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1856 err_msg("WB_IncMetaspaceCapacityUntilGC: inc does not fit in size_t: " JLONG_FORMAT, inc));
1857 }
1858
1859 size_t new_cap_until_GC = 0;
1860 size_t aligned_inc = align_down((size_t) inc, Metaspace::commit_alignment());
1861 bool success = MetaspaceGC::inc_capacity_until_GC(aligned_inc, &new_cap_until_GC);
1862 if (!success) {
1863 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(),
1864 "WB_IncMetaspaceCapacityUntilGC: could not increase capacity until GC "
1865 "due to contention with another thread");
1866 }
1867 return (jlong) new_cap_until_GC;
1868 WB_END
1869
1870 WB_ENTRY(jlong, WB_MetaspaceCapacityUntilGC(JNIEnv* env, jobject wb))
1871 return (jlong) MetaspaceGC::capacity_until_GC();
1872 WB_END
1873
1874 // The function is only valid when CDS is available.
1875 WB_ENTRY(jlong, WB_MetaspaceSharedRegionAlignment(JNIEnv* env, jobject wb))
1876 #if INCLUDE_CDS
1877 return (jlong)MetaspaceShared::core_region_alignment();
1878 #else
1879 ShouldNotReachHere();
1880 return 0L;
1881 #endif
1882 WB_END
1883
1884 WB_ENTRY(jboolean, WB_IsMonitorInflated(JNIEnv* env, jobject wb, jobject obj))
1885 oop obj_oop = JNIHandles::resolve(obj);
1886 return (jboolean) obj_oop->mark().has_monitor();
1887 WB_END
1888
1889 WB_ENTRY(jlong, WB_getInUseMonitorCount(JNIEnv* env, jobject wb))
1890 return (jlong) WhiteBox::get_in_use_monitor_count();
1891 WB_END
1892
1893 WB_ENTRY(jint, WB_getLockStackCapacity(JNIEnv* env))
1894 return (jint) LockStack::CAPACITY;
1895 WB_END
1896
1897 WB_ENTRY(jboolean, WB_supportsRecursiveLightweightLocking(JNIEnv* env))
1898 return (jboolean) VM_Version::supports_recursive_lightweight_locking();
1899 WB_END
1900
1901 WB_ENTRY(jboolean, WB_DeflateIdleMonitors(JNIEnv* env, jobject wb))
1902 log_info(monitorinflation)("WhiteBox initiated DeflateIdleMonitors");
1903 return ObjectSynchronizer::request_deflate_idle_monitors_from_wb();
1904 WB_END
1905
1906 WB_ENTRY(void, WB_ForceSafepoint(JNIEnv* env, jobject wb))
1907 VM_ForceSafepoint force_safepoint_op;
1908 VMThread::execute(&force_safepoint_op);
1909 WB_END
1910
1911 WB_ENTRY(void, WB_ForceClassLoaderStatsSafepoint(JNIEnv* env, jobject wb))
1912 nullStream dev_null;
1913 ClassLoaderStatsVMOperation force_op(&dev_null);
1914 VMThread::execute(&force_op);
1915 WB_END
1916
1917 WB_ENTRY(jlong, WB_GetConstantPool(JNIEnv* env, jobject wb, jclass klass))
1918 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1919 return (jlong) ik->constants();
1920 WB_END
1921
1922 WB_ENTRY(jobjectArray, WB_GetResolvedReferences(JNIEnv* env, jobject wb, jclass klass))
1923 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1924 objArrayOop resolved_refs= ik->constants()->resolved_references();
1925 return (jobjectArray)JNIHandles::make_local(THREAD, resolved_refs);
1926 WB_END
1927
1928 WB_ENTRY(jint, WB_getFieldEntriesLength(JNIEnv* env, jobject wb, jclass klass))
1929 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1930 ConstantPool* cp = ik->constants();
1931 if (cp->cache() == nullptr) {
1932 return -1;
1933 }
1934 return cp->resolved_field_entries_length();
1935 WB_END
1936
1937 WB_ENTRY(jint, WB_getFieldCPIndex(JNIEnv* env, jobject wb, jclass klass, jint index))
1938 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1939 ConstantPool* cp = ik->constants();
1940 if (cp->cache() == nullptr) {
1941 return -1;
1942 }
1943 return cp->resolved_field_entry_at(index)->constant_pool_index();
1944 WB_END
1945
1946 WB_ENTRY(jint, WB_getMethodEntriesLength(JNIEnv* env, jobject wb, jclass klass))
1947 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1948 ConstantPool* cp = ik->constants();
1949 if (cp->cache() == nullptr) {
1950 return -1;
1951 }
1952 return cp->resolved_method_entries_length();
1953 WB_END
1954
1955 WB_ENTRY(jint, WB_getMethodCPIndex(JNIEnv* env, jobject wb, jclass klass, jint index))
1956 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1957 ConstantPool* cp = ik->constants();
1958 if (cp->cache() == nullptr) {
1959 return -1;
1960 }
1961 return cp->resolved_method_entry_at(index)->constant_pool_index();
1962 WB_END
1963
1964 WB_ENTRY(jint, WB_getIndyInfoLength(JNIEnv* env, jobject wb, jclass klass))
1965 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1966 ConstantPool* cp = ik->constants();
1967 if (cp->cache() == nullptr) {
1968 return -1;
1969 }
1970 return cp->resolved_indy_entries_length();
1971 WB_END
1972
1973 WB_ENTRY(jint, WB_getIndyCPIndex(JNIEnv* env, jobject wb, jclass klass, jint index))
1974 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1975 ConstantPool* cp = ik->constants();
1976 if (cp->cache() == nullptr) {
1977 return -1;
1978 }
1979 return cp->resolved_indy_entry_at(index)->constant_pool_index();
1980 WB_END
1981
1982 WB_ENTRY(jobject, WB_printClasses(JNIEnv* env, jobject wb, jstring class_name_pattern, jint flags))
1983 ThreadToNativeFromVM ttnfv(thread);
1984 const char* c = env->GetStringUTFChars(class_name_pattern, nullptr);
1985 ResourceMark rm;
1986 stringStream st;
1987 {
1988 ThreadInVMfromNative ttvfn(thread); // back to VM
1989 ClassPrinter::print_classes(c, flags, &st);
1990 }
1991 jstring result = env->NewStringUTF(st.freeze());
1992 CHECK_JNI_EXCEPTION_(env, nullptr);
1993 return result;
1994 WB_END
1995
1996 WB_ENTRY(jobject, WB_printMethods(JNIEnv* env, jobject wb, jstring class_name_pattern, jstring method_pattern, jint flags))
1997 ThreadToNativeFromVM ttnfv(thread);
1998 const char* c = env->GetStringUTFChars(class_name_pattern, nullptr);
1999 const char* m = env->GetStringUTFChars(method_pattern, nullptr);
2000 ResourceMark rm;
2001 stringStream st;
2002 {
2003 ThreadInVMfromNative ttvfn(thread); // back to VM
2004 ClassPrinter::print_methods(c, m, flags, &st);
2005 }
2006 jstring result = env->NewStringUTF(st.freeze());
2007 CHECK_JNI_EXCEPTION_(env, nullptr);
2008 return result;
2009 WB_END
2010
2011 WB_ENTRY(void, WB_ClearInlineCaches(JNIEnv* env, jobject wb, jboolean preserve_static_stubs))
2012 VM_ClearICs clear_ics(preserve_static_stubs == JNI_TRUE);
2013 VMThread::execute(&clear_ics);
2014 WB_END
2015
2016 template <typename T>
2017 static bool GetMethodOption(JavaThread* thread, JNIEnv* env, jobject method, jstring name, T* value) {
2018 assert(value != nullptr, "sanity");
2019 if (method == nullptr || name == nullptr) {
2020 return false;
2021 }
2022 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
2023 CHECK_JNI_EXCEPTION_(env, false);
2024 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
2025 // can't be in VM when we call JNI
2026 ThreadToNativeFromVM ttnfv(thread);
2027 const char* flag_name = env->GetStringUTFChars(name, nullptr);
2028 CHECK_JNI_EXCEPTION_(env, false);
2029 CompileCommandEnum option = CompilerOracle::string_to_option(flag_name);
2030 env->ReleaseStringUTFChars(name, flag_name);
2031 if (option == CompileCommandEnum::Unknown) {
2032 return false;
2033 }
2034 if (!CompilerOracle::option_matches_type(option, *value)) {
2035 return false;
2036 }
2037 return CompilerOracle::has_option_value(mh, option, *value);
2038 }
2039
2040 WB_ENTRY(jobject, WB_GetMethodBooleaneOption(JNIEnv* env, jobject wb, jobject method, jstring name))
2041 bool result;
2042 if (GetMethodOption<bool> (thread, env, method, name, &result)) {
2043 // can't be in VM when we call JNI
2044 ThreadToNativeFromVM ttnfv(thread);
2045 return booleanBox(thread, env, result);
2046 }
2047 return nullptr;
2048 WB_END
2049
2050 WB_ENTRY(jobject, WB_GetMethodIntxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
2051 intx result;
2052 if (GetMethodOption <intx> (thread, env, method, name, &result)) {
2053 // can't be in VM when we call JNI
2054 ThreadToNativeFromVM ttnfv(thread);
2055 return longBox(thread, env, result);
2056 }
2057 return nullptr;
2058 WB_END
2059
2060 WB_ENTRY(jobject, WB_GetMethodUintxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
2061 uintx result;
2062 if (GetMethodOption <uintx> (thread, env, method, name, &result)) {
2063 // can't be in VM when we call JNI
2064 ThreadToNativeFromVM ttnfv(thread);
2065 return longBox(thread, env, result);
2066 }
2067 return nullptr;
2068 WB_END
2069
2070 WB_ENTRY(jobject, WB_GetMethodDoubleOption(JNIEnv* env, jobject wb, jobject method, jstring name))
2071 double result;
2072 if (GetMethodOption <double> (thread, env, method, name, &result)) {
2073 // can't be in VM when we call JNI
2074 ThreadToNativeFromVM ttnfv(thread);
2075 return doubleBox(thread, env, result);
2076 }
2077 return nullptr;
2078 WB_END
2079
2080 WB_ENTRY(jobject, WB_GetMethodStringOption(JNIEnv* env, jobject wb, jobject method, jstring name))
2081 ccstr ccstrResult;
2082 if (GetMethodOption <ccstr> (thread, env, method, name, &ccstrResult)) {
2083 // can't be in VM when we call JNI
2084 ThreadToNativeFromVM ttnfv(thread);
2085 jstring result = env->NewStringUTF(ccstrResult);
2086 CHECK_JNI_EXCEPTION_(env, nullptr);
2087 return result;
2088 }
2089 return nullptr;
2090 WB_END
2091
2092 WB_ENTRY(jobject, WB_GetDefaultArchivePath(JNIEnv* env, jobject wb))
2093 const char* p = CDSConfig::default_archive_path();
2094 ThreadToNativeFromVM ttn(thread);
2095 jstring path_string = env->NewStringUTF(p);
2096
2097 CHECK_JNI_EXCEPTION_(env, nullptr);
2098
2099 return path_string;
2100 WB_END
2101
2102 WB_ENTRY(jboolean, WB_IsSharingEnabled(JNIEnv* env, jobject wb))
2103 return CDSConfig::is_using_archive();
2104 WB_END
2105
2106 WB_ENTRY(jint, WB_GetCDSGenericHeaderMinVersion(JNIEnv* env, jobject wb))
2107 #if INCLUDE_CDS
2108 return (jint)CDS_GENERIC_HEADER_SUPPORTED_MIN_VERSION;
2109 #else
2110 ShouldNotReachHere();
2111 return (jint)-1;
2112 #endif
2113 WB_END
2114
2115 WB_ENTRY(jint, WB_GetCDSCurrentVersion(JNIEnv* env, jobject wb))
2116 #if INCLUDE_CDS
2117 return (jint)CURRENT_CDS_ARCHIVE_VERSION;
2118 #else
2119 ShouldNotReachHere();
2120 return (jint)-1;
2121 #endif
2122 WB_END
2123
2124 WB_ENTRY(jboolean, WB_CDSMemoryMappingFailed(JNIEnv* env, jobject wb))
2125 return FileMapInfo::memory_mapping_failed();
2126 WB_END
2127
2128 WB_ENTRY(jboolean, WB_IsSharedInternedString(JNIEnv* env, jobject wb, jobject str))
2129 ResourceMark rm(THREAD);
2130 oop str_oop = JNIHandles::resolve(str);
2131 int length;
2132 jchar* chars = java_lang_String::as_unicode_string(str_oop, length, CHECK_(false));
2133 return StringTable::lookup_shared(chars, length) == str_oop;
2134 WB_END
2135
2136 WB_ENTRY(jboolean, WB_IsSharedClass(JNIEnv* env, jobject wb, jclass clazz))
2137 return (jboolean)MetaspaceShared::is_in_shared_metaspace(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
2138 WB_END
2139
2140 WB_ENTRY(jboolean, WB_AreSharedStringsMapped(JNIEnv* env))
2141 return ArchiveHeapLoader::is_mapped();
2142 WB_END
2143
2144 WB_ENTRY(void, WB_LinkClass(JNIEnv* env, jobject wb, jclass clazz))
2145 Klass *k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz));
2146 if (!k->is_instance_klass()) {
2147 return;
2148 }
2149 InstanceKlass *ik = InstanceKlass::cast(k);
2150 ik->link_class(THREAD); // may throw verification error
2151 WB_END
2152
2153 WB_ENTRY(jboolean, WB_AreOpenArchiveHeapObjectsMapped(JNIEnv* env))
2154 return ArchiveHeapLoader::is_mapped();
2155 WB_END
2156
2157 WB_ENTRY(jboolean, WB_IsCDSIncluded(JNIEnv* env))
2158 #if INCLUDE_CDS
2159 // An exploded build inhibits use of CDS. Therefore, for the
2160 // purpose of testing, the JVM can be treated as not having CDS
2161 // built in at all.
2162 return ClassLoader::has_jrt_entry();
2163 #else
2164 return false;
2165 #endif // INCLUDE_CDS
2166 WB_END
2167
2168 WB_ENTRY(jboolean, WB_isC2OrJVMCIIncluded(JNIEnv* env))
2169 #if COMPILER2_OR_JVMCI
2170 return true;
2171 #else
2172 return false;
2173 #endif
2174 WB_END
2175
2176 WB_ENTRY(jboolean, WB_IsJVMCISupportedByGC(JNIEnv* env))
2177 #if INCLUDE_JVMCI
2178 return JVMCIGlobals::gc_supports_jvmci();
2179 #else
2180 return false;
2181 #endif
2182 WB_END
2183
2184 WB_ENTRY(jboolean, WB_CanWriteJavaHeapArchive(JNIEnv* env))
2185 return HeapShared::can_write();
2186 WB_END
2187
2188
2189 WB_ENTRY(jboolean, WB_IsJFRIncluded(JNIEnv* env))
2190 #if INCLUDE_JFR
2191 return true;
2192 #else
2193 return false;
2194 #endif // INCLUDE_JFR
2195 WB_END
2196
2197 WB_ENTRY(jboolean, WB_IsDTraceIncluded(JNIEnv* env))
2198 #if defined(DTRACE_ENABLED)
2199 return true;
2200 #else
2201 return false;
2202 #endif // DTRACE_ENABLED
2203 WB_END
2204
2205 #if INCLUDE_CDS
2206
2207 WB_ENTRY(jint, WB_GetCDSOffsetForName(JNIEnv* env, jobject o, jstring name))
2208 ResourceMark rm;
2209 char* c_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name));
2210 jint result = (jint)CDSConstants::get_cds_offset(c_name);
2211 return result;
2212 WB_END
2213
2214 WB_ENTRY(jint, WB_GetCDSConstantForName(JNIEnv* env, jobject o, jstring name))
2215 ResourceMark rm;
2216 char* c_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name));
2217 jint result = (jint)CDSConstants::get_cds_constant(c_name);
2218 return result;
2219 WB_END
2220
2221 #endif // INCLUDE_CDS
2222
2223 WB_ENTRY(jboolean, WB_HandshakeReadMonitors(JNIEnv* env, jobject wb, jobject thread_handle))
2224 class ReadMonitorsClosure : public HandshakeClosure {
2225 jboolean _executed;
2226
2227 void do_thread(Thread* th) {
2228 JavaThread* jt = JavaThread::cast(th);
2229 ResourceMark rm;
2230
2231 GrowableArray<MonitorInfo*>* info = new GrowableArray<MonitorInfo*>();
2232
2233 if (!jt->has_last_Java_frame()) {
2234 return;
2235 }
2236 RegisterMap rmap(jt,
2237 RegisterMap::UpdateMap::include,
2238 RegisterMap::ProcessFrames::include,
2239 RegisterMap::WalkContinuation::skip);
2240 for (javaVFrame* vf = jt->last_java_vframe(&rmap); vf != nullptr; vf = vf->java_sender()) {
2241 GrowableArray<MonitorInfo*> *monitors = vf->monitors();
2242 if (monitors != nullptr) {
2243 int len = monitors->length();
2244 // Walk monitors youngest to oldest
2245 for (int i = len - 1; i >= 0; i--) {
2246 MonitorInfo* mon_info = monitors->at(i);
2247 if (mon_info->eliminated()) continue;
2248 oop owner = mon_info->owner();
2249 if (owner != nullptr) {
2250 info->append(mon_info);
2251 }
2252 }
2253 }
2254 }
2255 _executed = true;
2256 }
2257
2258 public:
2259 ReadMonitorsClosure() : HandshakeClosure("WB_HandshakeReadMonitors"), _executed(false) {}
2260 jboolean executed() const { return _executed; }
2261 };
2262
2263 ReadMonitorsClosure rmc;
2264 if (thread_handle != nullptr) {
2265 ThreadsListHandle tlh;
2266 JavaThread* target = nullptr;
2267 bool is_alive = tlh.cv_internal_thread_to_JavaThread(thread_handle, &target, nullptr);
2268 if (is_alive) {
2269 Handshake::execute(&rmc, &tlh, target);
2270 }
2271 }
2272 return rmc.executed();
2273 WB_END
2274
2275 WB_ENTRY(jint, WB_HandshakeWalkStack(JNIEnv* env, jobject wb, jobject thread_handle, jboolean all_threads))
2276 class TraceSelfClosure : public HandshakeClosure {
2277 jint _num_threads_completed;
2278
2279 void do_thread(Thread* th) {
2280 JavaThread* jt = JavaThread::cast(th);
2281 ResourceMark rm;
2282
2283 jt->print_on(tty);
2284 jt->print_stack_on(tty);
2285 tty->cr();
2286 Atomic::inc(&_num_threads_completed);
2287 }
2288
2289 public:
2290 TraceSelfClosure(Thread* thread) : HandshakeClosure("WB_TraceSelf"), _num_threads_completed(0) {}
2291
2292 jint num_threads_completed() const { return _num_threads_completed; }
2293 };
2294 TraceSelfClosure tsc(Thread::current());
2295
2296 if (all_threads) {
2297 Handshake::execute(&tsc);
2298 } else if (thread_handle != nullptr) {
2299 ThreadsListHandle tlh;
2300 JavaThread* target = nullptr;
2301 bool is_alive = tlh.cv_internal_thread_to_JavaThread(thread_handle, &target, nullptr);
2302 if (is_alive) {
2303 Handshake::execute(&tsc, &tlh, target);
2304 }
2305 }
2306 return tsc.num_threads_completed();
2307 WB_END
2308
2309 WB_ENTRY(void, WB_AsyncHandshakeWalkStack(JNIEnv* env, jobject wb, jobject thread_handle))
2310 class TraceSelfClosure : public AsyncHandshakeClosure {
2311 JavaThread* _self;
2312 void do_thread(Thread* th) {
2313 assert(th->is_Java_thread(), "sanity");
2314 // AsynchHandshake handshakes are only executed by target.
2315 assert(_self == th, "Must be");
2316 assert(Thread::current() == th, "Must be");
2317 JavaThread* jt = JavaThread::cast(th);
2318 ResourceMark rm;
2319 jt->print_on(tty);
2320 jt->print_stack_on(tty);
2321 tty->cr();
2322 }
2323
2324 public:
2325 TraceSelfClosure(JavaThread* self_target) : AsyncHandshakeClosure("WB_TraceSelf"), _self(self_target) {}
2326 };
2327 if (thread_handle != nullptr) {
2328 ThreadsListHandle tlh;
2329 JavaThread* target = nullptr;
2330 bool is_alive = tlh.cv_internal_thread_to_JavaThread(thread_handle, &target, nullptr);
2331 if (is_alive) {
2332 TraceSelfClosure* tsc = new TraceSelfClosure(target);
2333 Handshake::execute(tsc, target);
2334 }
2335 }
2336 WB_END
2337
2338 static volatile int _emulated_lock = 0;
2339
2340 WB_ENTRY(void, WB_LockAndBlock(JNIEnv* env, jobject wb, jboolean suspender))
2341 JavaThread* self = JavaThread::current();
2342
2343 {
2344 // Before trying to acquire the lock transition into a safepoint safe state.
2345 // Otherwise if either suspender or suspendee blocks for a safepoint
2346 // in ~ThreadBlockInVM the other one could loop forever trying to acquire
2347 // the lock without allowing the safepoint to progress.
2348 ThreadBlockInVM tbivm(self);
2349
2350 // We will deadlock here if we are 'suspender' and 'suspendee'
2351 // suspended in ~ThreadBlockInVM. This verifies we only suspend
2352 // at the right place.
2353 while (Atomic::cmpxchg(&_emulated_lock, 0, 1) != 0) {}
2354 assert(_emulated_lock == 1, "Must be locked");
2355
2356 // Sleep much longer in suspendee to force situation where
2357 // 'suspender' is waiting above to acquire lock.
2358 os::naked_short_sleep(suspender ? 1 : 10);
2359 }
2360 Atomic::store(&_emulated_lock, 0);
2361 WB_END
2362
2363 // Some convenience methods to deal with objects from java
2364 int WhiteBox::offset_for_field(const char* field_name, oop object,
2365 Symbol* signature_symbol) {
2366 assert(field_name != nullptr && strlen(field_name) > 0, "Field name not valid");
2367
2368 //Get the class of our object
2369 Klass* arg_klass = object->klass();
2370 //Turn it into an instance-klass
2371 InstanceKlass* ik = InstanceKlass::cast(arg_klass);
2372
2373 //Create symbols to look for in the class
2374 TempNewSymbol name_symbol = SymbolTable::new_symbol(field_name);
2375
2376 //To be filled in with an offset of the field we're looking for
2377 fieldDescriptor fd;
2378
2379 Klass* res = ik->find_field(name_symbol, signature_symbol, &fd);
2380 if (res == nullptr) {
2381 tty->print_cr("Invalid layout of %s at %s", ik->external_name(),
2382 name_symbol->as_C_string());
2383 vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:class+load=info to see the origin of the problem class");
2384 }
2385
2386 //fetch the field at the offset we've found
2387 int dest_offset = fd.offset();
2388
2389 return dest_offset;
2390 }
2391
2392
2393 const char* WhiteBox::lookup_jstring(const char* field_name, oop object) {
2394 int offset = offset_for_field(field_name, object,
2395 vmSymbols::string_signature());
2396 oop string = object->obj_field(offset);
2397 if (string == nullptr) {
2398 return nullptr;
2399 }
2400 const char* ret = java_lang_String::as_utf8_string(string);
2401 return ret;
2402 }
2403
2404 bool WhiteBox::lookup_bool(const char* field_name, oop object) {
2405 int offset =
2406 offset_for_field(field_name, object, vmSymbols::bool_signature());
2407 bool ret = (object->bool_field(offset) == JNI_TRUE);
2408 return ret;
2409 }
2410
2411 void WhiteBox::register_methods(JNIEnv* env, jclass wbclass, JavaThread* thread, JNINativeMethod* method_array, int method_count) {
2412 ResourceMark rm;
2413 Klass* klass = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(wbclass));
2414 const char* klass_name = klass->external_name();
2415
2416 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
2417
2418 // one by one registration natives for exception catching
2419 jclass no_such_method_error_klass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string());
2420 CHECK_JNI_EXCEPTION(env);
2421 for (int i = 0, n = method_count; i < n; ++i) {
2422 // Skip dummy entries
2423 if (method_array[i].fnPtr == nullptr) continue;
2424 if (env->RegisterNatives(wbclass, &method_array[i], 1) != 0) {
2425 jthrowable throwable_obj = env->ExceptionOccurred();
2426 if (throwable_obj != nullptr) {
2427 env->ExceptionClear();
2428 if (env->IsInstanceOf(throwable_obj, no_such_method_error_klass)) {
2429 // NoSuchMethodError is thrown when a method can't be found or a method is not native.
2430 // Ignoring the exception since it is not preventing use of other WhiteBox methods.
2431 tty->print_cr("Warning: 'NoSuchMethodError' on register of %s::%s%s",
2432 klass_name, method_array[i].name, method_array[i].signature);
2433 }
2434 } else {
2435 // Registration failed unexpectedly.
2436 tty->print_cr("Warning: unexpected error on register of %s::%s%s. All methods will be unregistered",
2437 klass_name, method_array[i].name, method_array[i].signature);
2438 env->UnregisterNatives(wbclass);
2439 break;
2440 }
2441 }
2442 }
2443 }
2444
2445 WB_ENTRY(jint, WB_AddCompilerDirective(JNIEnv* env, jobject o, jstring compDirect))
2446 // can't be in VM when we call JNI
2447 ThreadToNativeFromVM ttnfv(thread);
2448 const char* dir = env->GetStringUTFChars(compDirect, nullptr);
2449 CHECK_JNI_EXCEPTION_(env, 0);
2450 int ret;
2451 {
2452 ThreadInVMfromNative ttvfn(thread); // back to VM
2453 ret = DirectivesParser::parse_string(dir, tty);
2454 }
2455 env->ReleaseStringUTFChars(compDirect, dir);
2456 // -1 for error parsing directive. Return 0 as number of directives added.
2457 if (ret == -1) {
2458 ret = 0;
2459 }
2460 return (jint) ret;
2461 WB_END
2462
2463 WB_ENTRY(void, WB_RemoveCompilerDirective(JNIEnv* env, jobject o, jint count))
2464 DirectivesStack::pop(count);
2465 WB_END
2466
2467 // Checks that the library libfile has the noexecstack bit set.
2468 WB_ENTRY(jboolean, WB_CheckLibSpecifiesNoexecstack(JNIEnv* env, jobject o, jstring libfile))
2469 jboolean ret = false;
2470 #ifdef LINUX
2471 // Can't be in VM when we call JNI.
2472 ThreadToNativeFromVM ttnfv(thread);
2473 const char* lf = env->GetStringUTFChars(libfile, nullptr);
2474 CHECK_JNI_EXCEPTION_(env, 0);
2475 ret = (jboolean) ElfFile::specifies_noexecstack(lf);
2476 env->ReleaseStringUTFChars(libfile, lf);
2477 #endif
2478 return ret;
2479 WB_END
2480
2481 WB_ENTRY(jboolean, WB_IsContainerized(JNIEnv* env, jobject o))
2482 LINUX_ONLY(return OSContainer::is_containerized();)
2483 return false;
2484 WB_END
2485
2486 // Physical memory of the host machine (including containers)
2487 WB_ENTRY(jlong, WB_HostPhysicalMemory(JNIEnv* env, jobject o))
2488 LINUX_ONLY(return os::Linux::physical_memory();)
2489 return os::physical_memory();
2490 WB_END
2491
2492 // Physical swap of the host machine (including containers), Linux only.
2493 WB_ENTRY(jlong, WB_HostPhysicalSwap(JNIEnv* env, jobject o))
2494 LINUX_ONLY(return (jlong)os::Linux::host_swap();)
2495 return -1; // Not used/implemented on other platforms
2496 WB_END
2497
2498 WB_ENTRY(jint, WB_ValidateCgroup(JNIEnv* env,
2499 jobject o,
2500 jstring proc_cgroups,
2501 jstring proc_self_cgroup,
2502 jstring proc_self_mountinfo))
2503 jint ret = 0;
2504 #ifdef LINUX
2505 ThreadToNativeFromVM ttnfv(thread);
2506 const char* p_cgroups = env->GetStringUTFChars(proc_cgroups, nullptr);
2507 CHECK_JNI_EXCEPTION_(env, 0);
2508 const char* p_s_cgroup = env->GetStringUTFChars(proc_self_cgroup, nullptr);
2509 CHECK_JNI_EXCEPTION_(env, 0);
2510 const char* p_s_mountinfo = env->GetStringUTFChars(proc_self_mountinfo, nullptr);
2511 CHECK_JNI_EXCEPTION_(env, 0);
2512 u1 cg_type_flags = 0;
2513 // This sets cg_type_flags
2514 WhiteBox::validate_cgroup(p_cgroups, p_s_cgroup, p_s_mountinfo, &cg_type_flags);
2515 ret = (jint)cg_type_flags;
2516 env->ReleaseStringUTFChars(proc_cgroups, p_cgroups);
2517 env->ReleaseStringUTFChars(proc_self_cgroup, p_s_cgroup);
2518 env->ReleaseStringUTFChars(proc_self_mountinfo, p_s_mountinfo);
2519 #endif
2520 return ret;
2521 WB_END
2522
2523 // Available cpus of the host machine, Linux only.
2524 // Used in container testing.
2525 WB_ENTRY(jint, WB_HostCPUs(JNIEnv* env, jobject o))
2526 LINUX_ONLY(return os::Linux::active_processor_count();)
2527 return -1; // Not used/implemented on other platforms
2528 WB_END
2529
2530 WB_ENTRY(void, WB_PrintOsInfo(JNIEnv* env, jobject o))
2531 os::print_os_info(tty);
2532 WB_END
2533
2534 // Elf decoder
2535 WB_ENTRY(void, WB_DisableElfSectionCache(JNIEnv* env))
2536 #if !defined(_WINDOWS) && !defined(__APPLE__) && !defined(_AIX)
2537 ElfFile::_do_not_cache_elf_section = true;
2538 #endif
2539 WB_END
2540
2541 WB_ENTRY(jlong, WB_ResolvedMethodItemsCount(JNIEnv* env, jobject o))
2542 return (jlong) ResolvedMethodTable::items_count();
2543 WB_END
2544
2545 WB_ENTRY(jint, WB_GetKlassMetadataSize(JNIEnv* env, jobject wb, jclass mirror))
2546 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(mirror));
2547 // Return size in bytes.
2548 return k->size() * wordSize;
2549 WB_END
2550
2551 // See test/hotspot/jtreg/runtime/Thread/ThreadObjAccessAtExit.java.
2552 // It explains how the thread's priority field is used for test state coordination.
2553 //
2554 WB_ENTRY(void, WB_CheckThreadObjOfTerminatingThread(JNIEnv* env, jobject wb, jobject target_handle))
2555 oop target_oop = JNIHandles::resolve_non_null(target_handle);
2556 jlong tid = java_lang_Thread::thread_id(target_oop);
2557 JavaThread* target = java_lang_Thread::thread(target_oop);
2558
2559 // Grab a ThreadsListHandle to protect the target thread whilst terminating
2560 ThreadsListHandle tlh;
2561
2562 // Look up the target thread by tid to ensure it is present
2563 JavaThread* t = tlh.list()->find_JavaThread_from_java_tid(tid);
2564 if (t == nullptr) {
2565 THROW_MSG(vmSymbols::java_lang_RuntimeException(), "Target thread not found in ThreadsList!");
2566 }
2567
2568 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: target thread is protected");
2569 // Allow target to terminate by boosting priority
2570 java_lang_Thread::set_priority(t->threadObj(), ThreadPriority(NormPriority + 1));
2571
2572 // Now wait for the target to terminate
2573 while (!target->is_terminated()) {
2574 ThreadBlockInVM tbivm(thread); // just in case target is involved in a safepoint
2575 os::naked_short_sleep(0);
2576 }
2577
2578 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: target thread is terminated");
2579
2580 // Now release the GC inducing thread - we have to re-resolve the external oop that
2581 // was passed in as GC may have occurred and we don't know if we can trust t->threadObj() now.
2582 oop original = JNIHandles::resolve_non_null(target_handle);
2583 java_lang_Thread::set_priority(original, ThreadPriority(NormPriority + 2));
2584
2585 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: GC has been initiated - checking threadObj:");
2586
2587 // The Java code should be creating garbage and triggering GC, which would potentially move
2588 // the threadObj oop. If the exiting thread is properly protected then its threadObj should
2589 // remain valid and equal to our initial target_handle. Loop a few times to give GC a chance to
2590 // kick in.
2591 for (int i = 0; i < 5; i++) {
2592 oop original = JNIHandles::resolve_non_null(target_handle);
2593 oop current = t->threadObj();
2594 if (original != current) {
2595 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: failed comparison on iteration %d", i);
2596 THROW_MSG(vmSymbols::java_lang_RuntimeException(), "Target thread oop has changed!");
2597 } else {
2598 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: successful comparison on iteration %d", i);
2599 ThreadBlockInVM tbivm(thread);
2600 os::naked_short_sleep(50);
2601 }
2602 }
2603 WB_END
2604
2605 WB_ENTRY(void, WB_VerifyFrames(JNIEnv* env, jobject wb, jboolean log, jboolean update_map))
2606 ResourceMark rm; // for verify
2607 stringStream st;
2608 for (StackFrameStream fst(JavaThread::current(), update_map, true); !fst.is_done(); fst.next()) {
2609 frame* current_frame = fst.current();
2610 if (log) {
2611 current_frame->print_value_on(&st);
2612 }
2613 current_frame->verify(fst.register_map());
2614 }
2615 if (log) {
2616 tty->print_cr("[WhiteBox::VerifyFrames] Walking Frames");
2617 tty->print_raw(st.freeze());
2618 tty->print_cr("[WhiteBox::VerifyFrames] Done");
2619 }
2620 WB_END
2621
2622 WB_ENTRY(jboolean, WB_IsJVMTIIncluded(JNIEnv* env, jobject wb))
2623 #if INCLUDE_JVMTI
2624 return JNI_TRUE;
2625 #else
2626 return JNI_FALSE;
2627 #endif
2628 WB_END
2629
2630 WB_ENTRY(void, WB_WaitUnsafe(JNIEnv* env, jobject wb, jint time))
2631 os::naked_short_sleep(time);
2632 WB_END
2633
2634 WB_ENTRY(jstring, WB_GetLibcName(JNIEnv* env, jobject o))
2635 ThreadToNativeFromVM ttn(thread);
2636 jstring info_string = env->NewStringUTF(XSTR(LIBC));
2637 CHECK_JNI_EXCEPTION_(env, nullptr);
2638 return info_string;
2639 WB_END
2640
2641 WB_ENTRY(void, WB_LockCritical(JNIEnv* env, jobject wb))
2642 GCLocker::lock_critical(thread);
2643 WB_END
2644
2645 WB_ENTRY(void, WB_UnlockCritical(JNIEnv* env, jobject wb))
2646 GCLocker::unlock_critical(thread);
2647 WB_END
2648
2649 WB_ENTRY(void, WB_PinObject(JNIEnv* env, jobject wb, jobject o))
2650 #if INCLUDE_G1GC
2651 if (!UseG1GC) {
2652 ShouldNotReachHere();
2653 return;
2654 }
2655 oop obj = JNIHandles::resolve(o);
2656 G1CollectedHeap::heap()->pin_object(thread, obj);
2657 #else
2658 ShouldNotReachHere();
2659 #endif // INCLUDE_G1GC
2660 WB_END
2661
2662 WB_ENTRY(void, WB_UnpinObject(JNIEnv* env, jobject wb, jobject o))
2663 #if INCLUDE_G1GC
2664 if (!UseG1GC) {
2665 ShouldNotReachHere();
2666 return;
2667 }
2668 oop obj = JNIHandles::resolve(o);
2669 G1CollectedHeap::heap()->unpin_object(thread, obj);
2670 #else
2671 ShouldNotReachHere();
2672 #endif // INCLUDE_G1GC
2673 WB_END
2674
2675 WB_ENTRY(jboolean, WB_SetVirtualThreadsNotifyJvmtiMode(JNIEnv* env, jobject wb, jboolean enable))
2676 if (!Continuations::enabled()) {
2677 tty->print_cr("WB error: must be Continuations::enabled()!");
2678 return JNI_FALSE;
2679 }
2680 jboolean result = false;
2681 #if INCLUDE_JVMTI
2682 if (enable) {
2683 result = JvmtiEnvBase::enable_virtual_threads_notify_jvmti();
2684 } else {
2685 result = JvmtiEnvBase::disable_virtual_threads_notify_jvmti();
2686 }
2687 #endif
2688 return result;
2689 WB_END
2690
2691 WB_ENTRY(void, WB_PreTouchMemory(JNIEnv* env, jobject wb, jlong addr, jlong size))
2692 void* const from = (void*)addr;
2693 void* const to = (void*)(addr + size);
2694 if (from > to) {
2695 os::pretouch_memory(from, to, os::vm_page_size());
2696 }
2697 WB_END
2698
2699 WB_ENTRY(void, WB_CleanMetaspaces(JNIEnv* env, jobject target))
2700 ClassLoaderDataGraph::safepoint_and_clean_metaspaces();
2701 WB_END
2702
2703 // Reports resident set size (RSS) in bytes
2704 WB_ENTRY(jlong, WB_Rss(JNIEnv* env, jobject o))
2705 return os::rss();
2706 WB_END
2707
2708 #define CC (char*)
2709
2710 static JNINativeMethod methods[] = {
2711 {CC"getObjectAddress0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress },
2712 {CC"getObjectSize0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectSize },
2713 {CC"isObjectInOldGen0", CC"(Ljava/lang/Object;)Z", (void*)&WB_isObjectInOldGen },
2714 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize },
2715 {CC"getVMPageSize", CC"()I", (void*)&WB_GetVMPageSize },
2716 {CC"getVMAllocationGranularity", CC"()J", (void*)&WB_GetVMAllocationGranularity },
2717 {CC"getVMLargePageSize", CC"()J", (void*)&WB_GetVMLargePageSize},
2718 {CC"getHeapSpaceAlignment", CC"()J", (void*)&WB_GetHeapSpaceAlignment},
2719 {CC"getHeapAlignment", CC"()J", (void*)&WB_GetHeapAlignment},
2720 {CC"countAliveClasses0", CC"(Ljava/lang/String;)I", (void*)&WB_CountAliveClasses },
2721 {CC"getSymbolRefcount", CC"(Ljava/lang/String;)I", (void*)&WB_GetSymbolRefcount },
2722 {CC"parseCommandLine0",
2723 CC"(Ljava/lang/String;C[Ljdk/test/whitebox/parser/DiagnosticCommand;)[Ljava/lang/Object;",
2724 (void*) &WB_ParseCommandLine
2725 },
2726 {CC"addToBootstrapClassLoaderSearch0", CC"(Ljava/lang/String;)V",
2727 (void*)&WB_AddToBootstrapClassLoaderSearch},
2728 {CC"addToSystemClassLoaderSearch0", CC"(Ljava/lang/String;)V",
2729 (void*)&WB_AddToSystemClassLoaderSearch},
2730 {CC"getCompressedOopsMaxHeapSize", CC"()J",
2731 (void*)&WB_GetCompressedOopsMaxHeapSize},
2732 {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes },
2733 {CC"readFromNoaccessArea",CC"()V", (void*)&WB_ReadFromNoaccessArea},
2734 {CC"stressVirtualSpaceResize",CC"(JJJ)I", (void*)&WB_StressVirtualSpaceResize},
2735 #if INCLUDE_CDS
2736 {CC"getCDSOffsetForName0", CC"(Ljava/lang/String;)I", (void*)&WB_GetCDSOffsetForName},
2737 {CC"getCDSConstantForName0", CC"(Ljava/lang/String;)I", (void*)&WB_GetCDSConstantForName},
2738 #endif
2739 #if INCLUDE_G1GC
2740 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark},
2741 {CC"g1CompletedConcurrentMarkCycles", CC"()I", (void*)&WB_G1CompletedConcurrentMarkCycles},
2742 {CC"g1IsHumongous0", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous },
2743 {CC"g1BelongsToHumongousRegion0", CC"(J)Z", (void*)&WB_G1BelongsToHumongousRegion},
2744 {CC"g1BelongsToFreeRegion0", CC"(J)Z", (void*)&WB_G1BelongsToFreeRegion},
2745 {CC"g1NumMaxRegions", CC"()J", (void*)&WB_G1NumMaxRegions },
2746 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions },
2747 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize },
2748 {CC"g1HasRegionsToUncommit", CC"()Z", (void*)&WB_G1HasRegionsToUncommit},
2749 {CC"g1AuxiliaryMemoryUsage", CC"()Ljava/lang/management/MemoryUsage;",
2750 (void*)&WB_G1AuxiliaryMemoryUsage },
2751 {CC"g1ActiveMemoryNodeCount", CC"()I", (void*)&WB_G1ActiveMemoryNodeCount },
2752 {CC"g1MemoryNodeIds", CC"()[I", (void*)&WB_G1MemoryNodeIds },
2753 {CC"g1GetMixedGCInfo", CC"(I)[J", (void*)&WB_G1GetMixedGCInfo },
2754 #endif // INCLUDE_G1GC
2755 #if INCLUDE_PARALLELGC
2756 {CC"psVirtualSpaceAlignment",CC"()J", (void*)&WB_PSVirtualSpaceAlignment},
2757 {CC"psHeapGenerationAlignment",CC"()J", (void*)&WB_PSHeapGenerationAlignment},
2758 #endif
2759 {CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc },
2760 {CC"NMTMallocWithPseudoStack", CC"(JI)J", (void*)&WB_NMTMallocWithPseudoStack},
2761 {CC"NMTMallocWithPseudoStackAndType", CC"(JII)J", (void*)&WB_NMTMallocWithPseudoStackAndType},
2762 {CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree },
2763 {CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory },
2764 {CC"NMTAttemptReserveMemoryAt", CC"(JJ)J", (void*)&WB_NMTAttemptReserveMemoryAt },
2765 {CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory },
2766 {CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory },
2767 {CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory },
2768 {CC"NMTGetHashSize", CC"()I", (void*)&WB_NMTGetHashSize },
2769 {CC"NMTNewArena", CC"(J)J", (void*)&WB_NMTNewArena },
2770 {CC"NMTFreeArena", CC"(J)V", (void*)&WB_NMTFreeArena },
2771 {CC"NMTArenaMalloc", CC"(JJ)V", (void*)&WB_NMTArenaMalloc },
2772 {CC"deoptimizeFrames", CC"(Z)I", (void*)&WB_DeoptimizeFrames },
2773 {CC"isFrameDeoptimized", CC"(I)Z", (void*)&WB_IsFrameDeoptimized},
2774 {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll },
2775 {CC"deoptimizeMethod0", CC"(Ljava/lang/reflect/Executable;Z)I",
2776 (void*)&WB_DeoptimizeMethod },
2777 {CC"isMethodCompiled0", CC"(Ljava/lang/reflect/Executable;Z)Z",
2778 (void*)&WB_IsMethodCompiled },
2779 {CC"isMethodCompilable0", CC"(Ljava/lang/reflect/Executable;IZ)Z",
2780 (void*)&WB_IsMethodCompilable},
2781 {CC"isMethodQueuedForCompilation0",
2782 CC"(Ljava/lang/reflect/Executable;)Z", (void*)&WB_IsMethodQueuedForCompilation},
2783 {CC"isIntrinsicAvailable0",
2784 CC"(Ljava/lang/reflect/Executable;Ljava/lang/reflect/Executable;I)Z",
2785 (void*)&WB_IsIntrinsicAvailable},
2786 {CC"makeMethodNotCompilable0",
2787 CC"(Ljava/lang/reflect/Executable;IZ)V", (void*)&WB_MakeMethodNotCompilable},
2788 {CC"testSetDontInlineMethod0",
2789 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetDontInlineMethod},
2790 {CC"getMethodCompilationLevel0",
2791 CC"(Ljava/lang/reflect/Executable;Z)I", (void*)&WB_GetMethodCompilationLevel},
2792 {CC"getMethodDecompileCount0",
2793 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodDecompileCount},
2794 {CC"getMethodTrapCount0",
2795 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2796 (void*)&WB_GetMethodTrapCount},
2797 {CC"getDeoptCount0",
2798 CC"(Ljava/lang/String;Ljava/lang/String;)I", (void*)&WB_GetDeoptCount},
2799 {CC"getMethodEntryBci0",
2800 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodEntryBci},
2801 {CC"getCompileQueueSize",
2802 CC"(I)I", (void*)&WB_GetCompileQueueSize},
2803 {CC"testSetForceInlineMethod0",
2804 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetForceInlineMethod},
2805 {CC"enqueueMethodForCompilation0",
2806 CC"(Ljava/lang/reflect/Executable;II)Z", (void*)&WB_EnqueueMethodForCompilation},
2807 {CC"enqueueInitializerForCompilation0",
2808 CC"(Ljava/lang/Class;I)Z", (void*)&WB_EnqueueInitializerForCompilation},
2809 {CC"markMethodProfiled",
2810 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_MarkMethodProfiled},
2811 {CC"clearMethodState0",
2812 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState},
2813 {CC"lockCompilation", CC"()V", (void*)&WB_LockCompilation},
2814 {CC"unlockCompilation", CC"()V", (void*)&WB_UnlockCompilation},
2815 {CC"matchesMethod",
2816 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2817 (void*)&WB_MatchesMethod},
2818 {CC"matchesInline",
2819 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2820 (void*)&WB_MatchesInline},
2821 {CC"shouldPrintAssembly",
2822 CC"(Ljava/lang/reflect/Executable;I)Z",
2823 (void*)&WB_ShouldPrintAssembly},
2824
2825 {CC"isConstantVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsConstantVMFlag},
2826 {CC"isDefaultVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsDefaultVMFlag},
2827 {CC"isLockedVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsLockedVMFlag},
2828 {CC"setBooleanVMFlag", CC"(Ljava/lang/String;Z)V",(void*)&WB_SetBooleanVMFlag},
2829 {CC"setIntVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntVMFlag},
2830 {CC"setUintVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintVMFlag},
2831 {CC"setIntxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntxVMFlag},
2832 {CC"setUintxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintxVMFlag},
2833 {CC"setUint64VMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUint64VMFlag},
2834 {CC"setSizeTVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetSizeTVMFlag},
2835 {CC"setDoubleVMFlag", CC"(Ljava/lang/String;D)V",(void*)&WB_SetDoubleVMFlag},
2836 {CC"setStringVMFlag", CC"(Ljava/lang/String;Ljava/lang/String;)V",
2837 (void*)&WB_SetStringVMFlag},
2838 {CC"getBooleanVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Boolean;",
2839 (void*)&WB_GetBooleanVMFlag},
2840 {CC"getIntVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2841 (void*)&WB_GetIntVMFlag},
2842 {CC"getUintVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2843 (void*)&WB_GetUintVMFlag},
2844 {CC"getIntxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2845 (void*)&WB_GetIntxVMFlag},
2846 {CC"getUintxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2847 (void*)&WB_GetUintxVMFlag},
2848 {CC"getUint64VMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2849 (void*)&WB_GetUint64VMFlag},
2850 {CC"getSizeTVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2851 (void*)&WB_GetSizeTVMFlag},
2852 {CC"getDoubleVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Double;",
2853 (void*)&WB_GetDoubleVMFlag},
2854 {CC"getStringVMFlag", CC"(Ljava/lang/String;)Ljava/lang/String;",
2855 (void*)&WB_GetStringVMFlag},
2856 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable },
2857 {CC"fullGC", CC"()V", (void*)&WB_FullGC },
2858 {CC"youngGC", CC"()V", (void*)&WB_YoungGC },
2859 {CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory },
2860 {CC"allocateMetaspace",
2861 CC"(Ljava/lang/ClassLoader;J)J", (void*)&WB_AllocateMetaspace },
2862 {CC"incMetaspaceCapacityUntilGC", CC"(J)J", (void*)&WB_IncMetaspaceCapacityUntilGC },
2863 {CC"metaspaceCapacityUntilGC", CC"()J", (void*)&WB_MetaspaceCapacityUntilGC },
2864 {CC"metaspaceSharedRegionAlignment", CC"()J", (void*)&WB_MetaspaceSharedRegionAlignment },
2865 {CC"getCPUFeatures", CC"()Ljava/lang/String;", (void*)&WB_GetCPUFeatures },
2866 {CC"getNMethod0", CC"(Ljava/lang/reflect/Executable;Z)[Ljava/lang/Object;",
2867 (void*)&WB_GetNMethod },
2868 {CC"allocateCodeBlob", CC"(II)J", (void*)&WB_AllocateCodeBlob },
2869 {CC"freeCodeBlob", CC"(J)V", (void*)&WB_FreeCodeBlob },
2870 {CC"getCodeHeapEntries", CC"(I)[Ljava/lang/Object;",(void*)&WB_GetCodeHeapEntries },
2871 {CC"getCompilationActivityMode",
2872 CC"()I", (void*)&WB_GetCompilationActivityMode},
2873 {CC"getMethodData0", CC"(Ljava/lang/reflect/Executable;)J",
2874 (void*)&WB_GetMethodData },
2875 {CC"getCodeBlob", CC"(J)[Ljava/lang/Object;",(void*)&WB_GetCodeBlob },
2876 {CC"getThreadStackSize", CC"()J", (void*)&WB_GetThreadStackSize },
2877 {CC"getThreadRemainingStackSize", CC"()J", (void*)&WB_GetThreadRemainingStackSize },
2878 {CC"DefineModule", CC"(Ljava/lang/Object;ZLjava/lang/String;Ljava/lang/String;[Ljava/lang/Object;)V",
2879 (void*)&WB_DefineModule },
2880 {CC"AddModuleExports", CC"(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/Object;)V",
2881 (void*)&WB_AddModuleExports },
2882 {CC"AddReadsModule", CC"(Ljava/lang/Object;Ljava/lang/Object;)V",
2883 (void*)&WB_AddReadsModule },
2884 {CC"AddModuleExportsToAllUnnamed", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
2885 (void*)&WB_AddModuleExportsToAllUnnamed },
2886 {CC"AddModuleExportsToAll", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
2887 (void*)&WB_AddModuleExportsToAll },
2888 {CC"deflateIdleMonitors", CC"()Z", (void*)&WB_DeflateIdleMonitors },
2889 {CC"isMonitorInflated0", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsMonitorInflated },
2890 {CC"getInUseMonitorCount", CC"()J", (void*)&WB_getInUseMonitorCount },
2891 {CC"getLockStackCapacity", CC"()I", (void*)&WB_getLockStackCapacity },
2892 {CC"supportsRecursiveLightweightLocking", CC"()Z", (void*)&WB_supportsRecursiveLightweightLocking },
2893 {CC"forceSafepoint", CC"()V", (void*)&WB_ForceSafepoint },
2894 {CC"forceClassLoaderStatsSafepoint", CC"()V", (void*)&WB_ForceClassLoaderStatsSafepoint },
2895 {CC"getConstantPool0", CC"(Ljava/lang/Class;)J", (void*)&WB_GetConstantPool },
2896 {CC"getResolvedReferences0", CC"(Ljava/lang/Class;)[Ljava/lang/Object;", (void*)&WB_GetResolvedReferences},
2897 {CC"getFieldEntriesLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_getFieldEntriesLength},
2898 {CC"getFieldCPIndex0", CC"(Ljava/lang/Class;I)I", (void*)&WB_getFieldCPIndex},
2899 {CC"getMethodEntriesLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_getMethodEntriesLength},
2900 {CC"getMethodCPIndex0", CC"(Ljava/lang/Class;I)I", (void*)&WB_getMethodCPIndex},
2901 {CC"getIndyInfoLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_getIndyInfoLength},
2902 {CC"getIndyCPIndex0", CC"(Ljava/lang/Class;I)I", (void*)&WB_getIndyCPIndex},
2903 {CC"printClasses0", CC"(Ljava/lang/String;I)Ljava/lang/String;", (void*)&WB_printClasses},
2904 {CC"printMethods0", CC"(Ljava/lang/String;Ljava/lang/String;I)Ljava/lang/String;", (void*)&WB_printMethods},
2905 {CC"getMethodBooleanOption",
2906 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Boolean;",
2907 (void*)&WB_GetMethodBooleaneOption},
2908 {CC"getMethodIntxOption",
2909 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
2910 (void*)&WB_GetMethodIntxOption},
2911 {CC"getMethodUintxOption",
2912 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
2913 (void*)&WB_GetMethodUintxOption},
2914 {CC"getMethodDoubleOption",
2915 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Double;",
2916 (void*)&WB_GetMethodDoubleOption},
2917 {CC"getMethodStringOption",
2918 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/String;",
2919 (void*)&WB_GetMethodStringOption},
2920 {CC"getDefaultArchivePath", CC"()Ljava/lang/String;",
2921 (void*)&WB_GetDefaultArchivePath},
2922 {CC"getCDSGenericHeaderMinVersion", CC"()I", (void*)&WB_GetCDSGenericHeaderMinVersion},
2923 {CC"getCurrentCDSVersion", CC"()I", (void*)&WB_GetCDSCurrentVersion},
2924 {CC"isSharingEnabled", CC"()Z", (void*)&WB_IsSharingEnabled},
2925 {CC"isSharedInternedString", CC"(Ljava/lang/String;)Z", (void*)&WB_IsSharedInternedString },
2926 {CC"isSharedClass", CC"(Ljava/lang/Class;)Z", (void*)&WB_IsSharedClass },
2927 {CC"areSharedStringsMapped", CC"()Z", (void*)&WB_AreSharedStringsMapped },
2928 {CC"linkClass", CC"(Ljava/lang/Class;)V", (void*)&WB_LinkClass},
2929 {CC"areOpenArchiveHeapObjectsMapped", CC"()Z", (void*)&WB_AreOpenArchiveHeapObjectsMapped},
2930 {CC"isCDSIncluded", CC"()Z", (void*)&WB_IsCDSIncluded },
2931 {CC"isJFRIncluded", CC"()Z", (void*)&WB_IsJFRIncluded },
2932 {CC"isDTraceIncluded", CC"()Z", (void*)&WB_IsDTraceIncluded },
2933 {CC"hasLibgraal", CC"()Z", (void*)&WB_HasLibgraal },
2934 {CC"isC2OrJVMCIIncluded", CC"()Z", (void*)&WB_isC2OrJVMCIIncluded },
2935 {CC"isJVMCISupportedByGC", CC"()Z", (void*)&WB_IsJVMCISupportedByGC},
2936 {CC"canWriteJavaHeapArchive", CC"()Z", (void*)&WB_CanWriteJavaHeapArchive },
2937 {CC"cdsMemoryMappingFailed", CC"()Z", (void*)&WB_CDSMemoryMappingFailed },
2938
2939 {CC"clearInlineCaches0", CC"(Z)V", (void*)&WB_ClearInlineCaches },
2940 {CC"handshakeReadMonitors", CC"(Ljava/lang/Thread;)Z", (void*)&WB_HandshakeReadMonitors },
2941 {CC"handshakeWalkStack", CC"(Ljava/lang/Thread;Z)I", (void*)&WB_HandshakeWalkStack },
2942 {CC"asyncHandshakeWalkStack", CC"(Ljava/lang/Thread;)V", (void*)&WB_AsyncHandshakeWalkStack },
2943 {CC"lockAndBlock", CC"(Z)V", (void*)&WB_LockAndBlock},
2944 {CC"checkThreadObjOfTerminatingThread", CC"(Ljava/lang/Thread;)V", (void*)&WB_CheckThreadObjOfTerminatingThread },
2945 {CC"verifyFrames", CC"(ZZ)V", (void*)&WB_VerifyFrames },
2946 {CC"addCompilerDirective", CC"(Ljava/lang/String;)I",
2947 (void*)&WB_AddCompilerDirective },
2948 {CC"removeCompilerDirective", CC"(I)V", (void*)&WB_RemoveCompilerDirective },
2949 {CC"isGCSupported", CC"(I)Z", (void*)&WB_IsGCSupported},
2950 {CC"isGCSupportedByJVMCICompiler", CC"(I)Z", (void*)&WB_IsGCSupportedByJVMCICompiler},
2951 {CC"isGCSelected", CC"(I)Z", (void*)&WB_IsGCSelected},
2952 {CC"isGCSelectedErgonomically", CC"()Z", (void*)&WB_IsGCSelectedErgonomically},
2953 {CC"supportsConcurrentGCBreakpoints", CC"()Z", (void*)&WB_SupportsConcurrentGCBreakpoints},
2954 {CC"concurrentGCAcquireControl0", CC"()V", (void*)&WB_ConcurrentGCAcquireControl},
2955 {CC"concurrentGCReleaseControl0", CC"()V", (void*)&WB_ConcurrentGCReleaseControl},
2956 {CC"concurrentGCRunToIdle0", CC"()V", (void*)&WB_ConcurrentGCRunToIdle},
2957 {CC"concurrentGCRunTo0", CC"(Ljava/lang/String;)Z",
2958 (void*)&WB_ConcurrentGCRunTo},
2959 {CC"checkLibSpecifiesNoexecstack", CC"(Ljava/lang/String;)Z",
2960 (void*)&WB_CheckLibSpecifiesNoexecstack},
2961 {CC"isContainerized", CC"()Z", (void*)&WB_IsContainerized },
2962 {CC"validateCgroup",
2963 CC"(Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;)I",
2964 (void*)&WB_ValidateCgroup },
2965 {CC"hostPhysicalMemory", CC"()J", (void*)&WB_HostPhysicalMemory },
2966 {CC"hostPhysicalSwap", CC"()J", (void*)&WB_HostPhysicalSwap },
2967 {CC"hostCPUs", CC"()I", (void*)&WB_HostCPUs },
2968 {CC"printOsInfo", CC"()V", (void*)&WB_PrintOsInfo },
2969 {CC"disableElfSectionCache", CC"()V", (void*)&WB_DisableElfSectionCache },
2970 {CC"resolvedMethodItemsCount", CC"()J", (void*)&WB_ResolvedMethodItemsCount },
2971 {CC"getKlassMetadataSize", CC"(Ljava/lang/Class;)I",(void*)&WB_GetKlassMetadataSize},
2972
2973 {CC"createMetaspaceTestContext", CC"(JJ)J", (void*)&WB_CreateMetaspaceTestContext},
2974 {CC"destroyMetaspaceTestContext", CC"(J)V", (void*)&WB_DestroyMetaspaceTestContext},
2975 {CC"purgeMetaspaceTestContext", CC"(J)V", (void*)&WB_PurgeMetaspaceTestContext},
2976 {CC"printMetaspaceTestContext", CC"(J)V", (void*)&WB_PrintMetaspaceTestContext},
2977 {CC"getTotalCommittedBytesInMetaspaceTestContext", CC"(J)J",(void*)&WB_GetTotalCommittedBytesInMetaspaceTestContext},
2978 {CC"getTotalUsedBytesInMetaspaceTestContext", CC"(J)J", (void*)&WB_GetTotalUsedBytesInMetaspaceTestContext},
2979 {CC"createArenaInTestContext", CC"(JZ)J", (void*)&WB_CreateArenaInTestContext},
2980 {CC"destroyMetaspaceTestArena", CC"(J)V", (void*)&WB_DestroyMetaspaceTestArena},
2981 {CC"allocateFromMetaspaceTestArena", CC"(JJ)J", (void*)&WB_AllocateFromMetaspaceTestArena},
2982 {CC"deallocateToMetaspaceTestArena", CC"(JJJ)V", (void*)&WB_DeallocateToMetaspaceTestArena},
2983 {CC"maxMetaspaceAllocationSize", CC"()J", (void*)&WB_GetMaxMetaspaceAllocationSize},
2984
2985 {CC"isJVMTIIncluded", CC"()Z", (void*)&WB_IsJVMTIIncluded},
2986 {CC"waitUnsafe", CC"(I)V", (void*)&WB_WaitUnsafe},
2987 {CC"getLibcName", CC"()Ljava/lang/String;", (void*)&WB_GetLibcName},
2988
2989 {CC"lockCritical", CC"()V", (void*)&WB_LockCritical},
2990 {CC"unlockCritical", CC"()V", (void*)&WB_UnlockCritical},
2991 {CC"pinObject", CC"(Ljava/lang/Object;)V", (void*)&WB_PinObject},
2992 {CC"unpinObject", CC"(Ljava/lang/Object;)V", (void*)&WB_UnpinObject},
2993 {CC"setVirtualThreadsNotifyJvmtiMode", CC"(Z)Z", (void*)&WB_SetVirtualThreadsNotifyJvmtiMode},
2994 {CC"preTouchMemory", CC"(JJ)V", (void*)&WB_PreTouchMemory},
2995 {CC"cleanMetaspaces", CC"()V", (void*)&WB_CleanMetaspaces},
2996 {CC"rss", CC"()J", (void*)&WB_Rss},
2997 {CC"printString", CC"(Ljava/lang/String;I)Ljava/lang/String;", (void*)&WB_PrintString},
2998 {CC"lockAndStuckInSafepoint", CC"()V", (void*)&WB_TakeLockAndHangInSafepoint},
2999 {CC"wordSize", CC"()J", (void*)&WB_WordSize},
3000 {CC"rootChunkWordSize", CC"()J", (void*)&WB_RootChunkWordSize}
3001 };
3002
3003
3004 #undef CC
3005
3006 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass))
3007 {
3008 if (WhiteBoxAPI) {
3009 // Make sure that wbclass is loaded by the null classloader
3010 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(wbclass)));
3011 Handle loader(THREAD, ik->class_loader());
3012 if (loader.is_null()) {
3013 WhiteBox::register_methods(env, wbclass, thread, methods, sizeof(methods) / sizeof(methods[0]));
3014 WhiteBox::set_used();
3015 }
3016 }
3017 }
3018 JVM_END