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