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 if (ZGenerational) {
428 return ZHeap::heap()->is_old(to_zaddress(p));
429 } else {
430 return Universe::heap()->is_in(p);
431 }
432 }
433 #endif
434 #if INCLUDE_SHENANDOAHGC
435 if (UseShenandoahGC) {
436 ShenandoahHeap* sh = ShenandoahHeap::heap();
437 return sh->mode()->is_generational() ? sh->is_in_old(p) : sh->is_in(p);
438 }
439 #endif
440 #if INCLUDE_SERIALGC
441 if (UseSerialGC) {
442 return !SerialHeap::heap()->is_in_young(p);
443 }
444 #endif
445 ShouldNotReachHere();
446 return false;
447 WB_END
448
449 WB_ENTRY(jlong, WB_GetObjectSize(JNIEnv* env, jobject o, jobject obj))
450 oop p = JNIHandles::resolve(obj);
451 return p->size() * HeapWordSize;
452 WB_END
453
454 WB_ENTRY(jlong, WB_GetHeapSpaceAlignment(JNIEnv* env, jobject o))
455 return (jlong)SpaceAlignment;
456 WB_END
457
458 WB_ENTRY(jlong, WB_GetHeapAlignment(JNIEnv* env, jobject o))
459 return (jlong)HeapAlignment;
460 WB_END
461
462 WB_ENTRY(jboolean, WB_SupportsConcurrentGCBreakpoints(JNIEnv* env, jobject o))
463 return Universe::heap()->supports_concurrent_gc_breakpoints();
464 WB_END
465
466 WB_ENTRY(void, WB_ConcurrentGCAcquireControl(JNIEnv* env, jobject o))
467 ConcurrentGCBreakpoints::acquire_control();
468 WB_END
469
470 WB_ENTRY(void, WB_ConcurrentGCReleaseControl(JNIEnv* env, jobject o))
471 ConcurrentGCBreakpoints::release_control();
472 WB_END
473
474 WB_ENTRY(void, WB_ConcurrentGCRunToIdle(JNIEnv* env, jobject o))
475 ConcurrentGCBreakpoints::run_to_idle();
476 WB_END
477
478 WB_ENTRY(jboolean, WB_ConcurrentGCRunTo(JNIEnv* env, jobject o, jobject at))
479 Handle h_name(THREAD, JNIHandles::resolve(at));
480 ResourceMark rm;
481 const char* c_name = java_lang_String::as_utf8_string(h_name());
482 return ConcurrentGCBreakpoints::run_to(c_name);
483 WB_END
484
485 #if INCLUDE_G1GC
486
487 WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj))
488 if (UseG1GC) {
489 G1CollectedHeap* g1h = G1CollectedHeap::heap();
490 oop result = JNIHandles::resolve(obj);
491 const G1HeapRegion* hr = g1h->heap_region_containing(result);
492 return hr->is_humongous();
493 }
494 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1IsHumongous: G1 GC is not enabled");
495 WB_END
496
497 WB_ENTRY(jboolean, WB_G1BelongsToHumongousRegion(JNIEnv* env, jobject o, jlong addr))
498 if (UseG1GC) {
499 G1CollectedHeap* g1h = G1CollectedHeap::heap();
500 const G1HeapRegion* hr = g1h->heap_region_containing((void*) addr);
501 return hr->is_humongous();
502 }
503 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToHumongousRegion: G1 GC is not enabled");
504 WB_END
505
506 WB_ENTRY(jboolean, WB_G1BelongsToFreeRegion(JNIEnv* env, jobject o, jlong addr))
507 if (UseG1GC) {
508 G1CollectedHeap* g1h = G1CollectedHeap::heap();
509 const G1HeapRegion* hr = g1h->heap_region_containing((void*) addr);
510 return hr->is_free();
511 }
512 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1BelongsToFreeRegion: G1 GC is not enabled");
513 WB_END
514
515 WB_ENTRY(jlong, WB_G1NumMaxRegions(JNIEnv* env, jobject o))
516 if (UseG1GC) {
517 G1CollectedHeap* g1h = G1CollectedHeap::heap();
518 size_t nr = g1h->max_regions();
519 return (jlong)nr;
520 }
521 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumMaxRegions: G1 GC is not enabled");
522 WB_END
523
524 WB_ENTRY(jlong, WB_G1NumFreeRegions(JNIEnv* env, jobject o))
525 if (UseG1GC) {
526 G1CollectedHeap* g1h = G1CollectedHeap::heap();
527 size_t nr = g1h->num_free_regions();
528 return (jlong)nr;
529 }
530 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1NumFreeRegions: G1 GC is not enabled");
531 WB_END
532
533 WB_ENTRY(jboolean, WB_G1InConcurrentMark(JNIEnv* env, jobject o))
534 if (UseG1GC) {
535 G1CollectedHeap* g1h = G1CollectedHeap::heap();
536 return g1h->concurrent_mark()->cm_thread()->in_progress();
537 }
538 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1InConcurrentMark: G1 GC is not enabled");
539 WB_END
540
541 WB_ENTRY(jint, WB_G1CompletedConcurrentMarkCycles(JNIEnv* env, jobject o))
542 if (UseG1GC) {
543 G1CollectedHeap* g1h = G1CollectedHeap::heap();
544 G1ConcurrentMark* cm = g1h->concurrent_mark();
545 return cm->completed_mark_cycles();
546 }
547 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1CompletedConcurrentMarkCycles: G1 GC is not enabled");
548 WB_END
549
550 WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o))
551 if (UseG1GC) {
552 return (jint)G1HeapRegion::GrainBytes;
553 }
554 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1RegionSize: G1 GC is not enabled");
555 WB_END
556
557 WB_ENTRY(jboolean, WB_G1HasRegionsToUncommit(JNIEnv* env, jobject o))
558 if (UseG1GC) {
559 return G1CollectedHeap::heap()->has_uncommittable_regions();
560 }
561 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1HasRegionsToUncommit: G1 GC is not enabled");
562 WB_END
563
564 #endif // INCLUDE_G1GC
565
566 #if INCLUDE_PARALLELGC
567
568 WB_ENTRY(jlong, WB_PSVirtualSpaceAlignment(JNIEnv* env, jobject o))
569 if (UseParallelGC) {
570 return GenAlignment;
571 }
572 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSVirtualSpaceAlignment: Parallel GC is not enabled");
573 WB_END
574
575 WB_ENTRY(jlong, WB_PSHeapGenerationAlignment(JNIEnv* env, jobject o))
576 if (UseParallelGC) {
577 return GenAlignment;
578 }
579 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_PSHeapGenerationAlignment: Parallel GC is not enabled");
580 WB_END
581
582 #endif // INCLUDE_PARALLELGC
583
584 #if INCLUDE_G1GC
585
586 WB_ENTRY(jobject, WB_G1AuxiliaryMemoryUsage(JNIEnv* env))
587 if (UseG1GC) {
588 ResourceMark rm(THREAD);
589 G1CollectedHeap* g1h = G1CollectedHeap::heap();
590 MemoryUsage usage = g1h->get_auxiliary_data_memory_usage();
591 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL);
592 return JNIHandles::make_local(THREAD, h());
593 }
594 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1AuxiliaryMemoryUsage: G1 GC is not enabled");
595 WB_END
596
597 WB_ENTRY(jint, WB_G1ActiveMemoryNodeCount(JNIEnv* env, jobject o))
598 if (UseG1GC) {
599 G1NUMA* numa = G1NUMA::numa();
600 return (jint)numa->num_active_nodes();
601 }
602 THROW_MSG_0(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1ActiveMemoryNodeCount: G1 GC is not enabled");
603 WB_END
604
605 WB_ENTRY(jintArray, WB_G1MemoryNodeIds(JNIEnv* env, jobject o))
606 if (UseG1GC) {
607 G1NUMA* numa = G1NUMA::numa();
608 int num_node_ids = checked_cast<int>(numa->num_active_nodes());
609 const uint* node_ids = numa->node_ids();
610
611 typeArrayOop result = oopFactory::new_intArray(num_node_ids, CHECK_NULL);
612 for (int i = 0; i < num_node_ids; i++) {
613 result->int_at_put(i, checked_cast<jint>(node_ids[i]));
614 }
615 return (jintArray) JNIHandles::make_local(THREAD, result);
616 }
617 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1MemoryNodeIds: G1 GC is not enabled");
618 WB_END
619
620 class OldRegionsLivenessClosure: public G1HeapRegionClosure {
621
622 private:
623 const int _liveness;
624 size_t _total_count;
625 size_t _total_memory;
626 size_t _total_memory_to_free;
627
628 public:
629 OldRegionsLivenessClosure(int liveness) :
630 _liveness(liveness),
631 _total_count(0),
632 _total_memory(0),
633 _total_memory_to_free(0) { }
634
635 size_t total_count() { return _total_count; }
636 size_t total_memory() { return _total_memory; }
637 size_t total_memory_to_free() { return _total_memory_to_free; }
638
639 bool do_heap_region(G1HeapRegion* r) {
640 if (r->is_old()) {
641 size_t live = r->live_bytes();
642 size_t size = r->used();
643 size_t reg_size = G1HeapRegion::GrainBytes;
644 if (size > 0 && ((int)(live * 100 / size) < _liveness)) {
645 _total_memory += size;
646 ++_total_count;
647 if (size == reg_size) {
648 // We don't include non-full regions since they are unlikely included in mixed gc
649 // for testing purposes it's enough to have lowest estimation of total memory that is expected to be freed
650 _total_memory_to_free += size - live;
651 }
652 }
653 }
654 return false;
655 }
656 };
657
658
659 WB_ENTRY(jlongArray, WB_G1GetMixedGCInfo(JNIEnv* env, jobject o, jint liveness))
660 if (!UseG1GC) {
661 THROW_MSG_NULL(vmSymbols::java_lang_UnsupportedOperationException(), "WB_G1GetMixedGCInfo: G1 GC is not enabled");
662 }
663 if (liveness < 0) {
664 THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), "liveness value should be non-negative");
665 }
666
667 G1CollectedHeap* g1h = G1CollectedHeap::heap();
668 OldRegionsLivenessClosure rli(liveness);
669 g1h->heap_region_iterate(&rli);
670
671 typeArrayOop result = oopFactory::new_longArray(3, CHECK_NULL);
672 result->long_at_put(0, rli.total_count());
673 result->long_at_put(1, rli.total_memory());
674 result->long_at_put(2, rli.total_memory_to_free());
675 return (jlongArray) JNIHandles::make_local(THREAD, result);
676 WB_END
677
678 #endif // INCLUDE_G1GC
679
680 // Alloc memory using the test memory tag so that we can use that to see if
681 // NMT picks it up correctly
682 WB_ENTRY(jlong, WB_NMTMalloc(JNIEnv* env, jobject o, jlong size))
683 jlong addr = 0;
684 addr = (jlong)(uintptr_t)os::malloc(size, mtTest);
685 return addr;
686 WB_END
687
688 // Alloc memory with pseudo call stack. The test can create pseudo malloc
689 // allocation site to stress the malloc tracking.
690 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStack(JNIEnv* env, jobject o, jlong size, jint pseudo_stack))
691 address pc = (address)(size_t)pseudo_stack;
692 NativeCallStack stack(&pc, 1);
693 return (jlong)(uintptr_t)os::malloc(size, mtTest, stack);
694 WB_END
695
696 // Alloc memory with pseudo call stack and specific memory tag.
697 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStackAndType(JNIEnv* env, jobject o, jlong size, jint pseudo_stack, jint mem_tag))
698 address pc = (address)(size_t)pseudo_stack;
699 NativeCallStack stack(&pc, 1);
700 return (jlong)(uintptr_t)os::malloc(size, (MemTag)mem_tag, stack);
701 WB_END
702
703 // Free the memory allocated by NMTAllocTest
704 WB_ENTRY(void, WB_NMTFree(JNIEnv* env, jobject o, jlong mem))
705 os::free((void*)(uintptr_t)mem);
706 WB_END
707
708 WB_ENTRY(jlong, WB_NMTReserveMemory(JNIEnv* env, jobject o, jlong size))
709 jlong addr = 0;
710
711 addr = (jlong)(uintptr_t)os::reserve_memory(size);
712 MemTracker::record_virtual_memory_tag((address)addr, mtTest);
713
714 return addr;
715 WB_END
716
717 WB_ENTRY(jlong, WB_NMTAttemptReserveMemoryAt(JNIEnv* env, jobject o, jlong addr, jlong size))
718 addr = (jlong)(uintptr_t)os::attempt_reserve_memory_at((char*)(uintptr_t)addr, (size_t)size);
719 MemTracker::record_virtual_memory_tag((address)addr, mtTest);
720
721 return addr;
722 WB_END
723
724 WB_ENTRY(void, WB_NMTCommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
725 os::commit_memory((char *)(uintptr_t)addr, size, !ExecMem);
726 MemTracker::record_virtual_memory_tag((address)(uintptr_t)addr, mtTest);
727 WB_END
728
729 WB_ENTRY(void, WB_NMTUncommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
730 os::uncommit_memory((char *)(uintptr_t)addr, size);
731 WB_END
732
733 WB_ENTRY(void, WB_NMTReleaseMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
734 os::release_memory((char *)(uintptr_t)addr, size);
735 WB_END
736
737 WB_ENTRY(jint, WB_NMTGetHashSize(JNIEnv* env, jobject o))
738 int hash_size = MallocSiteTable::hash_buckets();
739 assert(hash_size > 0, "NMT hash_size should be > 0");
740 return (jint)hash_size;
741 WB_END
742
743 WB_ENTRY(jlong, WB_NMTNewArena(JNIEnv* env, jobject o, jlong init_size))
744 Arena* arena = new (mtTest) Arena(mtTest, Arena::Tag::tag_other, size_t(init_size));
745 return (jlong)arena;
746 WB_END
747
748 WB_ENTRY(void, WB_NMTFreeArena(JNIEnv* env, jobject o, jlong arena))
749 Arena* a = (Arena*)arena;
750 delete a;
751 WB_END
752
753 WB_ENTRY(void, WB_NMTArenaMalloc(JNIEnv* env, jobject o, jlong arena, jlong size))
754 Arena* a = (Arena*)arena;
755 a->Amalloc(size_t(size));
756 WB_END
757
758 static jmethodID reflected_method_to_jmid(JavaThread* thread, JNIEnv* env, jobject method) {
759 assert(method != nullptr, "method should not be null");
760 ThreadToNativeFromVM ttn(thread);
761 return env->FromReflectedMethod(method);
762 }
763
764 // Deoptimizes all compiled frames and makes nmethods not entrant if it's requested
765 class VM_WhiteBoxDeoptimizeFrames : public VM_WhiteBoxOperation {
766 private:
767 int _result;
768 const bool _make_not_entrant;
769 public:
770 VM_WhiteBoxDeoptimizeFrames(bool make_not_entrant) :
771 _result(0), _make_not_entrant(make_not_entrant) { }
772 int result() const { return _result; }
773
774 void doit() {
775 for (JavaThreadIteratorWithHandle jtiwh; JavaThread *t = jtiwh.next(); ) {
776 if (t->has_last_Java_frame()) {
777 for (StackFrameStream fst(t, false /* update */, true /* process_frames */); !fst.is_done(); fst.next()) {
778 frame* f = fst.current();
779 if (f->can_be_deoptimized() && !f->is_deoptimized_frame()) {
780 Deoptimization::deoptimize(t, *f);
781 if (_make_not_entrant) {
782 nmethod* nm = CodeCache::find_nmethod(f->pc());
783 assert(nm != nullptr, "did not find nmethod");
784 nm->make_not_entrant();
785 }
786 ++_result;
787 }
788 }
789 }
790 }
791 }
792 };
793
794 WB_ENTRY(jint, WB_DeoptimizeFrames(JNIEnv* env, jobject o, jboolean make_not_entrant))
795 VM_WhiteBoxDeoptimizeFrames op(make_not_entrant == JNI_TRUE);
796 VMThread::execute(&op);
797 return op.result();
798 WB_END
799
800 WB_ENTRY(jboolean, WB_IsFrameDeoptimized(JNIEnv* env, jobject o, jint depth))
801 bool result = false;
802 if (thread->has_last_Java_frame()) {
803 ResourceMark rm(THREAD);
804 RegisterMap reg_map(thread,
805 RegisterMap::UpdateMap::include,
806 RegisterMap::ProcessFrames::include,
807 RegisterMap::WalkContinuation::skip);
808 javaVFrame *jvf = thread->last_java_vframe(®_map);
809 for (jint d = 0; d < depth && jvf != nullptr; d++) {
810 jvf = jvf->java_sender();
811 }
812 result = jvf != nullptr && jvf->fr().is_deoptimized_frame();
813 }
814 return result;
815 WB_END
816
817 WB_ENTRY(void, WB_DeoptimizeAll(JNIEnv* env, jobject o))
818 DeoptimizationScope deopt_scope;
819 CodeCache::mark_all_nmethods_for_deoptimization(&deopt_scope);
820 deopt_scope.deoptimize_marked();
821 WB_END
822
823 WB_ENTRY(jint, WB_DeoptimizeMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
824 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
825 int result = 0;
826 CHECK_JNI_EXCEPTION_(env, result);
827
828 DeoptimizationScope deopt_scope;
829 {
830 MutexLocker mu(Compile_lock);
831 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
832 if (is_osr) {
833 result += mh->method_holder()->mark_osr_nmethods(&deopt_scope, mh());
834 } else {
835 MutexLocker ml(NMethodState_lock, Mutex::_no_safepoint_check_flag);
836 if (mh->code() != nullptr) {
837 deopt_scope.mark(mh->code());
838 ++result;
839 }
840 }
841 CodeCache::mark_for_deoptimization(&deopt_scope, mh());
842 }
843
844 deopt_scope.deoptimize_marked();
845
846 return result;
847 WB_END
848
849 WB_ENTRY(jboolean, WB_IsMethodCompiled(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
850 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
851 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
852 MutexLocker mu(Compile_lock);
853 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
854 nmethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
855 if (code == nullptr) {
856 return JNI_FALSE;
857 }
858 return !code->is_marked_for_deoptimization();
859 WB_END
860
861 static bool is_excluded_for_compiler(AbstractCompiler* comp, methodHandle& mh) {
862 if (comp == nullptr) {
863 return true;
864 }
865 DirectiveSet* directive = DirectivesStack::getMatchingDirective(mh, comp);
866 bool exclude = directive->ExcludeOption;
867 DirectivesStack::release(directive);
868 return exclude;
869 }
870
871 static bool can_be_compiled_at_level(methodHandle& mh, jboolean is_osr, int level) {
872 if (is_osr) {
873 return CompilationPolicy::can_be_osr_compiled(mh, level);
874 } else {
875 return CompilationPolicy::can_be_compiled(mh, level);
876 }
877 }
878
879 WB_ENTRY(jboolean, WB_IsMethodCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
880 if (method == nullptr || comp_level > CompilationPolicy::highest_compile_level()) {
881 return false;
882 }
883 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
884 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
885 MutexLocker mu(Compile_lock);
886 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
887
888 // The ExcludeOption directive is evaluated lazily upon compilation attempt. If a method was not tried to be compiled by
889 // a compiler, yet, the method object is not set to be not compilable by that compiler. Thus, evaluate the compiler directive
890 // to exclude a compilation of 'method'.
891 if (comp_level == CompLevel_any) {
892 // Both compilers could have ExcludeOption set. Check all combinations.
893 bool excluded_c1 = is_excluded_for_compiler(CompileBroker::compiler1(), mh);
894 bool excluded_c2 = is_excluded_for_compiler(CompileBroker::compiler2(), mh);
895 if (excluded_c1 && excluded_c2) {
896 // Compilation of 'method' excluded by both compilers.
897 return false;
898 }
899
900 if (excluded_c1) {
901 // C1 only has ExcludeOption set: Check if compilable with C2.
902 return can_be_compiled_at_level(mh, is_osr, CompLevel_full_optimization);
903 } else if (excluded_c2) {
904 // C2 only has ExcludeOption set: Check if compilable with C1.
905 return can_be_compiled_at_level(mh, is_osr, CompLevel_simple);
906 }
907 } else if (comp_level > CompLevel_none && is_excluded_for_compiler(CompileBroker::compiler((int)comp_level), mh)) {
908 // Compilation of 'method' excluded by compiler used for 'comp_level'.
909 return false;
910 }
911
912 return can_be_compiled_at_level(mh, is_osr, (int)comp_level);
913 WB_END
914
915 WB_ENTRY(jboolean, WB_IsMethodQueuedForCompilation(JNIEnv* env, jobject o, jobject method))
916 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
917 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
918 MutexLocker mu(Compile_lock);
919 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
920 return mh->queued_for_compilation();
921 WB_END
922
923 WB_ENTRY(jboolean, WB_IsIntrinsicAvailable(JNIEnv* env, jobject o, jobject method, jobject compilation_context, jint compLevel))
924 if (compLevel < CompLevel_none || compLevel > CompilationPolicy::highest_compile_level()) {
925 return false; // Intrinsic is not available on a non-existent compilation level.
926 }
927 jmethodID method_id, compilation_context_id;
928 method_id = reflected_method_to_jmid(thread, env, method);
929 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
930 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(method_id));
931
932 DirectiveSet* directive;
933 AbstractCompiler* comp = CompileBroker::compiler((int)compLevel);
934 assert(comp != nullptr, "compiler not available");
935 if (compilation_context != nullptr) {
936 compilation_context_id = reflected_method_to_jmid(thread, env, compilation_context);
937 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
938 methodHandle cch(THREAD, Method::checked_resolve_jmethod_id(compilation_context_id));
939 directive = DirectivesStack::getMatchingDirective(cch, comp);
940 } else {
941 // Calling with null matches default directive
942 directive = DirectivesStack::getDefaultDirective(comp);
943 }
944 bool result = comp->is_intrinsic_available(mh, directive);
945 DirectivesStack::release(directive);
946 return result;
947 WB_END
948
949 WB_ENTRY(jint, WB_GetMethodCompilationLevel(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
950 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
951 CHECK_JNI_EXCEPTION_(env, CompLevel_none);
952 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
953 nmethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
954 return (code != nullptr ? code->comp_level() : CompLevel_none);
955 WB_END
956
957 WB_ENTRY(void, WB_MakeMethodNotCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
958 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
959 CHECK_JNI_EXCEPTION(env);
960 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
961 if (is_osr) {
962 mh->set_not_osr_compilable("WhiteBox", comp_level);
963 } else {
964 mh->set_not_compilable("WhiteBox", comp_level);
965 }
966 WB_END
967
968 WB_ENTRY(jint, WB_GetMethodDecompileCount(JNIEnv* env, jobject o, jobject method))
969 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
970 CHECK_JNI_EXCEPTION_(env, 0);
971 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
972 uint cnt = 0;
973 MethodData* mdo = mh->method_data();
974 if (mdo != nullptr) {
975 cnt = mdo->decompile_count();
976 }
977 return cnt;
978 WB_END
979
980 // Get the trap count of a method for a specific reason. If the trap count for
981 // that reason did overflow, this includes the overflow trap count of the method.
982 // If 'reason' is null, the sum of the traps for all reasons will be returned.
983 // This number includes the overflow trap count if the trap count for any reason
984 // did overflow.
985 WB_ENTRY(jint, WB_GetMethodTrapCount(JNIEnv* env, jobject o, jobject method, jstring reason_obj))
986 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
987 CHECK_JNI_EXCEPTION_(env, 0);
988 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
989 uint cnt = 0;
990 MethodData* mdo = mh->method_data();
991 if (mdo != nullptr) {
992 ResourceMark rm(THREAD);
993 char* reason_str = (reason_obj == nullptr) ?
994 nullptr : java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(reason_obj));
995 bool overflow = false;
996 for (uint reason = 0; reason < mdo->trap_reason_limit(); reason++) {
997 if (reason_str != nullptr && !strcmp(reason_str, Deoptimization::trap_reason_name(reason))) {
998 cnt = mdo->trap_count(reason);
999 // Count in the overflow trap count on overflow
1000 if (cnt == (uint)-1) {
1001 cnt = mdo->trap_count_limit() + mdo->overflow_trap_count();
1002 }
1003 break;
1004 } else if (reason_str == nullptr) {
1005 uint c = mdo->trap_count(reason);
1006 if (c == (uint)-1) {
1007 c = mdo->trap_count_limit();
1008 if (!overflow) {
1009 // Count overflow trap count just once
1010 overflow = true;
1011 c += mdo->overflow_trap_count();
1012 }
1013 }
1014 cnt += c;
1015 }
1016 }
1017 }
1018 return cnt;
1019 WB_END
1020
1021 WB_ENTRY(jint, WB_GetDeoptCount(JNIEnv* env, jobject o, jstring reason_obj, jstring action_obj))
1022 if (reason_obj == nullptr && action_obj == nullptr) {
1023 return Deoptimization::total_deoptimization_count();
1024 }
1025 ResourceMark rm(THREAD);
1026 const char *reason_str = (reason_obj == nullptr) ?
1027 nullptr : java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(reason_obj));
1028 const char *action_str = (action_obj == nullptr) ?
1029 nullptr : java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(action_obj));
1030
1031 return Deoptimization::deoptimization_count(reason_str, action_str);
1032 WB_END
1033
1034 WB_ENTRY(jint, WB_GetMethodEntryBci(JNIEnv* env, jobject o, jobject method))
1035 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1036 CHECK_JNI_EXCEPTION_(env, InvocationEntryBci);
1037 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1038 nmethod* code = mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false);
1039 return (code != nullptr && code->is_osr_method() ? code->osr_entry_bci() : InvocationEntryBci);
1040 WB_END
1041
1042 WB_ENTRY(jboolean, WB_TestSetDontInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
1043 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1044 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1045 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1046 bool result = mh->dont_inline();
1047 mh->set_dont_inline(value == JNI_TRUE);
1048 return result;
1049 WB_END
1050
1051 WB_ENTRY(jint, WB_GetCompileQueueSize(JNIEnv* env, jobject o, jint comp_level))
1052 if (comp_level == CompLevel_any) {
1053 return CompileBroker::queue_size(CompLevel_full_optimization) /* C2 */ +
1054 CompileBroker::queue_size(CompLevel_full_profile) /* C1 */;
1055 } else {
1056 return CompileBroker::queue_size(comp_level);
1057 }
1058 WB_END
1059
1060 WB_ENTRY(jboolean, WB_TestSetForceInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
1061 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
1062 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
1063 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
1064 bool result = mh->force_inline();
1065 mh->set_force_inline(value == JNI_TRUE);
1066 return result;
1067 WB_END
1068
1069 #ifdef LINUX
1070 bool WhiteBox::validate_cgroup(const char* proc_cgroups,
1071 const char* proc_self_cgroup,
1072 const char* proc_self_mountinfo,
1073 u1* cg_flags) {
1074 CgroupInfo cg_infos[CG_INFO_LENGTH];
1075 return CgroupSubsystemFactory::determine_type(cg_infos, proc_cgroups,
1076 proc_self_cgroup,
1077 proc_self_mountinfo, cg_flags);
1078 }
1079 #endif
1080
1081 bool WhiteBox::compile_method(Method* method, int comp_level, int bci, JavaThread* THREAD) {
1082 // Screen for unavailable/bad comp level or null method
1083 AbstractCompiler* comp = CompileBroker::compiler(comp_level);
1084 if (method == nullptr) {
1085 tty->print_cr("WB error: request to compile null 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 metaspace::MetaspaceTestContext* context =
1726 new metaspace::MetaspaceTestContext("whitebox-metaspace-context", (size_t) commit_limit, (size_t) reserve_limit);
1727 return (jlong)p2i(context);
1728 WB_END
1729
1730 WB_ENTRY(void, WB_DestroyMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1731 delete (metaspace::MetaspaceTestContext*) context;
1732 WB_END
1733
1734 WB_ENTRY(void, WB_PurgeMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1735 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1736 context0->purge_area();
1737 WB_END
1738
1739 WB_ENTRY(void, WB_PrintMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1740 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1741 context0->print_on(tty);
1742 WB_END
1743
1744 WB_ENTRY(jlong, WB_GetTotalCommittedWordsInMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1745 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1746 return context0->committed_words();
1747 WB_END
1748
1749 WB_ENTRY(jlong, WB_GetTotalUsedWordsInMetaspaceTestContext(JNIEnv* env, jobject wb, jlong context))
1750 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1751 return context0->used_words();
1752 WB_END
1753
1754 WB_ENTRY(jlong, WB_CreateArenaInTestContext(JNIEnv* env, jobject wb, jlong context, jboolean is_micro))
1755 const Metaspace::MetaspaceType type = is_micro ? Metaspace::ReflectionMetaspaceType : Metaspace::StandardMetaspaceType;
1756 metaspace::MetaspaceTestContext* context0 = (metaspace::MetaspaceTestContext*) context;
1757 return (jlong)p2i(context0->create_arena(type));
1758 WB_END
1759
1760 WB_ENTRY(void, WB_DestroyMetaspaceTestArena(JNIEnv* env, jobject wb, jlong arena))
1761 delete (metaspace::MetaspaceTestArena*) arena;
1762 WB_END
1763
1764 WB_ENTRY(jlong, WB_AllocateFromMetaspaceTestArena(JNIEnv* env, jobject wb, jlong arena, jlong word_size))
1765 metaspace::MetaspaceTestArena* arena0 = (metaspace::MetaspaceTestArena*) arena;
1766 MetaWord* p = arena0->allocate((size_t) word_size);
1767 return (jlong)p2i(p);
1768 WB_END
1769
1770 WB_ENTRY(void, WB_DeallocateToMetaspaceTestArena(JNIEnv* env, jobject wb, jlong arena, jlong p, jlong word_size))
1771 metaspace::MetaspaceTestArena* arena0 = (metaspace::MetaspaceTestArena*) arena;
1772 arena0->deallocate((MetaWord*)p, (size_t) word_size);
1773 WB_END
1774
1775 WB_ENTRY(jlong, WB_GetMaxMetaspaceAllocationSize(JNIEnv* env, jobject wb))
1776 return (jlong) Metaspace::max_allocation_word_size() * BytesPerWord;
1777 WB_END
1778
1779 //////////////
1780
1781 WB_ENTRY(jlong, WB_AllocateMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong size))
1782 if (size < 0) {
1783 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1784 err_msg("WB_AllocateMetaspace: size is negative: " JLONG_FORMAT, size));
1785 }
1786
1787 oop class_loader_oop = JNIHandles::resolve(class_loader);
1788 ClassLoaderData* cld = class_loader_oop != nullptr
1789 ? java_lang_ClassLoader::loader_data_acquire(class_loader_oop)
1790 : ClassLoaderData::the_null_class_loader_data();
1791
1792 void* metadata = MetadataFactory::new_array<u1>(cld, WhiteBox::array_bytes_to_length((size_t)size), thread);
1793
1794 return (jlong)(uintptr_t)metadata;
1795 WB_END
1796
1797 WB_ENTRY(void, WB_DefineModule(JNIEnv* env, jobject o, jobject module, jboolean is_open,
1798 jstring version, jstring location, jobjectArray packages))
1799 Handle h_module (THREAD, JNIHandles::resolve(module));
1800 Modules::define_module(h_module, is_open, version, location, packages, CHECK);
1801 WB_END
1802
1803 WB_ENTRY(void, WB_AddModuleExports(JNIEnv* env, jobject o, jobject from_module, jstring package, jobject to_module))
1804 Handle h_from_module (THREAD, JNIHandles::resolve(from_module));
1805 Handle h_to_module (THREAD, JNIHandles::resolve(to_module));
1806 Modules::add_module_exports_qualified(h_from_module, package, h_to_module, CHECK);
1807 WB_END
1808
1809 WB_ENTRY(void, WB_AddModuleExportsToAllUnnamed(JNIEnv* env, jobject o, jclass module, jstring package))
1810 Handle h_module (THREAD, JNIHandles::resolve(module));
1811 Modules::add_module_exports_to_all_unnamed(h_module, package, CHECK);
1812 WB_END
1813
1814 WB_ENTRY(void, WB_AddModuleExportsToAll(JNIEnv* env, jobject o, jclass module, jstring package))
1815 Handle h_module (THREAD, JNIHandles::resolve(module));
1816 Modules::add_module_exports(h_module, package, Handle(), CHECK);
1817 WB_END
1818
1819 WB_ENTRY(void, WB_AddReadsModule(JNIEnv* env, jobject o, jobject from_module, jobject source_module))
1820 Handle h_from_module (THREAD, JNIHandles::resolve(from_module));
1821 Handle h_source_module (THREAD, JNIHandles::resolve(source_module));
1822 Modules::add_reads_module(h_from_module, h_source_module, CHECK);
1823 WB_END
1824
1825 WB_ENTRY(jlong, WB_IncMetaspaceCapacityUntilGC(JNIEnv* env, jobject wb, jlong inc))
1826 if (inc < 0) {
1827 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1828 err_msg("WB_IncMetaspaceCapacityUntilGC: inc is negative: " JLONG_FORMAT, inc));
1829 }
1830
1831 jlong max_size_t = (jlong) ((size_t) -1);
1832 if (inc > max_size_t) {
1833 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1834 err_msg("WB_IncMetaspaceCapacityUntilGC: inc does not fit in size_t: " JLONG_FORMAT, inc));
1835 }
1836
1837 size_t new_cap_until_GC = 0;
1838 size_t aligned_inc = align_down((size_t) inc, Metaspace::commit_alignment());
1839 bool success = MetaspaceGC::inc_capacity_until_GC(aligned_inc, &new_cap_until_GC);
1840 if (!success) {
1841 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(),
1842 "WB_IncMetaspaceCapacityUntilGC: could not increase capacity until GC "
1843 "due to contention with another thread");
1844 }
1845 return (jlong) new_cap_until_GC;
1846 WB_END
1847
1848 WB_ENTRY(jlong, WB_MetaspaceCapacityUntilGC(JNIEnv* env, jobject wb))
1849 return (jlong) MetaspaceGC::capacity_until_GC();
1850 WB_END
1851
1852 // The function is only valid when CDS is available.
1853 WB_ENTRY(jlong, WB_MetaspaceSharedRegionAlignment(JNIEnv* env, jobject wb))
1854 #if INCLUDE_CDS
1855 return (jlong)MetaspaceShared::core_region_alignment();
1856 #else
1857 ShouldNotReachHere();
1858 return 0L;
1859 #endif
1860 WB_END
1861
1862 WB_ENTRY(jboolean, WB_IsMonitorInflated(JNIEnv* env, jobject wb, jobject obj))
1863 oop obj_oop = JNIHandles::resolve(obj);
1864 return (jboolean) obj_oop->mark().has_monitor();
1865 WB_END
1866
1867 WB_ENTRY(jlong, WB_getInUseMonitorCount(JNIEnv* env, jobject wb))
1868 return (jlong) WhiteBox::get_in_use_monitor_count();
1869 WB_END
1870
1871 WB_ENTRY(jint, WB_getLockStackCapacity(JNIEnv* env))
1872 return (jint) LockStack::CAPACITY;
1873 WB_END
1874
1875 WB_ENTRY(jboolean, WB_supportsRecursiveLightweightLocking(JNIEnv* env))
1876 return (jboolean) VM_Version::supports_recursive_lightweight_locking();
1877 WB_END
1878
1879 WB_ENTRY(jboolean, WB_DeflateIdleMonitors(JNIEnv* env, jobject wb))
1880 log_info(monitorinflation)("WhiteBox initiated DeflateIdleMonitors");
1881 return ObjectSynchronizer::request_deflate_idle_monitors_from_wb();
1882 WB_END
1883
1884 WB_ENTRY(void, WB_ForceSafepoint(JNIEnv* env, jobject wb))
1885 VM_ForceSafepoint force_safepoint_op;
1886 VMThread::execute(&force_safepoint_op);
1887 WB_END
1888
1889 WB_ENTRY(void, WB_ForceClassLoaderStatsSafepoint(JNIEnv* env, jobject wb))
1890 nullStream dev_null;
1891 ClassLoaderStatsVMOperation force_op(&dev_null);
1892 VMThread::execute(&force_op);
1893 WB_END
1894
1895 WB_ENTRY(jlong, WB_GetConstantPool(JNIEnv* env, jobject wb, jclass klass))
1896 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1897 return (jlong) ik->constants();
1898 WB_END
1899
1900 WB_ENTRY(jobjectArray, WB_GetResolvedReferences(JNIEnv* env, jobject wb, jclass klass))
1901 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1902 objArrayOop resolved_refs= ik->constants()->resolved_references();
1903 return (jobjectArray)JNIHandles::make_local(THREAD, resolved_refs);
1904 WB_END
1905
1906 WB_ENTRY(jint, WB_getFieldEntriesLength(JNIEnv* env, jobject wb, jclass klass))
1907 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1908 ConstantPool* cp = ik->constants();
1909 if (cp->cache() == nullptr) {
1910 return -1;
1911 }
1912 return cp->resolved_field_entries_length();
1913 WB_END
1914
1915 WB_ENTRY(jint, WB_getFieldCPIndex(JNIEnv* env, jobject wb, jclass klass, jint index))
1916 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1917 ConstantPool* cp = ik->constants();
1918 if (cp->cache() == nullptr) {
1919 return -1;
1920 }
1921 return cp->resolved_field_entry_at(index)->constant_pool_index();
1922 WB_END
1923
1924 WB_ENTRY(jint, WB_getMethodEntriesLength(JNIEnv* env, jobject wb, jclass klass))
1925 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1926 ConstantPool* cp = ik->constants();
1927 if (cp->cache() == nullptr) {
1928 return -1;
1929 }
1930 return cp->resolved_method_entries_length();
1931 WB_END
1932
1933 WB_ENTRY(jint, WB_getMethodCPIndex(JNIEnv* env, jobject wb, jclass klass, jint index))
1934 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1935 ConstantPool* cp = ik->constants();
1936 if (cp->cache() == nullptr) {
1937 return -1;
1938 }
1939 return cp->resolved_method_entry_at(index)->constant_pool_index();
1940 WB_END
1941
1942 WB_ENTRY(jint, WB_getIndyInfoLength(JNIEnv* env, jobject wb, jclass klass))
1943 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1944 ConstantPool* cp = ik->constants();
1945 if (cp->cache() == nullptr) {
1946 return -1;
1947 }
1948 return cp->resolved_indy_entries_length();
1949 WB_END
1950
1951 WB_ENTRY(jint, WB_getIndyCPIndex(JNIEnv* env, jobject wb, jclass klass, jint index))
1952 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(klass)));
1953 ConstantPool* cp = ik->constants();
1954 if (cp->cache() == nullptr) {
1955 return -1;
1956 }
1957 return cp->resolved_indy_entry_at(index)->constant_pool_index();
1958 WB_END
1959
1960 WB_ENTRY(jobject, WB_printClasses(JNIEnv* env, jobject wb, jstring class_name_pattern, jint flags))
1961 ThreadToNativeFromVM ttnfv(thread);
1962 const char* c = env->GetStringUTFChars(class_name_pattern, nullptr);
1963 ResourceMark rm;
1964 stringStream st;
1965 {
1966 ThreadInVMfromNative ttvfn(thread); // back to VM
1967 ClassPrinter::print_classes(c, flags, &st);
1968 }
1969 jstring result = env->NewStringUTF(st.freeze());
1970 CHECK_JNI_EXCEPTION_(env, nullptr);
1971 return result;
1972 WB_END
1973
1974 WB_ENTRY(jobject, WB_printMethods(JNIEnv* env, jobject wb, jstring class_name_pattern, jstring method_pattern, jint flags))
1975 ThreadToNativeFromVM ttnfv(thread);
1976 const char* c = env->GetStringUTFChars(class_name_pattern, nullptr);
1977 const char* m = env->GetStringUTFChars(method_pattern, nullptr);
1978 ResourceMark rm;
1979 stringStream st;
1980 {
1981 ThreadInVMfromNative ttvfn(thread); // back to VM
1982 ClassPrinter::print_methods(c, m, flags, &st);
1983 }
1984 jstring result = env->NewStringUTF(st.freeze());
1985 CHECK_JNI_EXCEPTION_(env, nullptr);
1986 return result;
1987 WB_END
1988
1989 WB_ENTRY(void, WB_ClearInlineCaches(JNIEnv* env, jobject wb, jboolean preserve_static_stubs))
1990 VM_ClearICs clear_ics(preserve_static_stubs == JNI_TRUE);
1991 VMThread::execute(&clear_ics);
1992 WB_END
1993
1994 template <typename T>
1995 static bool GetMethodOption(JavaThread* thread, JNIEnv* env, jobject method, jstring name, T* value) {
1996 assert(value != nullptr, "sanity");
1997 if (method == nullptr || name == nullptr) {
1998 return false;
1999 }
2000 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
2001 CHECK_JNI_EXCEPTION_(env, false);
2002 methodHandle mh(thread, Method::checked_resolve_jmethod_id(jmid));
2003 // can't be in VM when we call JNI
2004 ThreadToNativeFromVM ttnfv(thread);
2005 const char* flag_name = env->GetStringUTFChars(name, nullptr);
2006 CHECK_JNI_EXCEPTION_(env, false);
2007 CompileCommandEnum option = CompilerOracle::string_to_option(flag_name);
2008 env->ReleaseStringUTFChars(name, flag_name);
2009 if (option == CompileCommandEnum::Unknown) {
2010 return false;
2011 }
2012 if (!CompilerOracle::option_matches_type(option, *value)) {
2013 return false;
2014 }
2015 return CompilerOracle::has_option_value(mh, option, *value);
2016 }
2017
2018 WB_ENTRY(jobject, WB_GetMethodBooleaneOption(JNIEnv* env, jobject wb, jobject method, jstring name))
2019 bool result;
2020 if (GetMethodOption<bool> (thread, env, method, name, &result)) {
2021 // can't be in VM when we call JNI
2022 ThreadToNativeFromVM ttnfv(thread);
2023 return booleanBox(thread, env, result);
2024 }
2025 return nullptr;
2026 WB_END
2027
2028 WB_ENTRY(jobject, WB_GetMethodIntxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
2029 intx result;
2030 if (GetMethodOption <intx> (thread, env, method, name, &result)) {
2031 // can't be in VM when we call JNI
2032 ThreadToNativeFromVM ttnfv(thread);
2033 return longBox(thread, env, result);
2034 }
2035 return nullptr;
2036 WB_END
2037
2038 WB_ENTRY(jobject, WB_GetMethodUintxOption(JNIEnv* env, jobject wb, jobject method, jstring name))
2039 uintx result;
2040 if (GetMethodOption <uintx> (thread, env, method, name, &result)) {
2041 // can't be in VM when we call JNI
2042 ThreadToNativeFromVM ttnfv(thread);
2043 return longBox(thread, env, result);
2044 }
2045 return nullptr;
2046 WB_END
2047
2048 WB_ENTRY(jobject, WB_GetMethodDoubleOption(JNIEnv* env, jobject wb, jobject method, jstring name))
2049 double result;
2050 if (GetMethodOption <double> (thread, env, method, name, &result)) {
2051 // can't be in VM when we call JNI
2052 ThreadToNativeFromVM ttnfv(thread);
2053 return doubleBox(thread, env, result);
2054 }
2055 return nullptr;
2056 WB_END
2057
2058 WB_ENTRY(jobject, WB_GetMethodStringOption(JNIEnv* env, jobject wb, jobject method, jstring name))
2059 ccstr ccstrResult;
2060 if (GetMethodOption <ccstr> (thread, env, method, name, &ccstrResult)) {
2061 // can't be in VM when we call JNI
2062 ThreadToNativeFromVM ttnfv(thread);
2063 jstring result = env->NewStringUTF(ccstrResult);
2064 CHECK_JNI_EXCEPTION_(env, nullptr);
2065 return result;
2066 }
2067 return nullptr;
2068 WB_END
2069
2070 WB_ENTRY(jobject, WB_GetDefaultArchivePath(JNIEnv* env, jobject wb))
2071 const char* p = CDSConfig::default_archive_path();
2072 ThreadToNativeFromVM ttn(thread);
2073 jstring path_string = env->NewStringUTF(p);
2074
2075 CHECK_JNI_EXCEPTION_(env, nullptr);
2076
2077 return path_string;
2078 WB_END
2079
2080 WB_ENTRY(jboolean, WB_IsSharingEnabled(JNIEnv* env, jobject wb))
2081 return CDSConfig::is_using_archive();
2082 WB_END
2083
2084 WB_ENTRY(jint, WB_GetCDSGenericHeaderMinVersion(JNIEnv* env, jobject wb))
2085 #if INCLUDE_CDS
2086 return (jint)CDS_GENERIC_HEADER_SUPPORTED_MIN_VERSION;
2087 #else
2088 ShouldNotReachHere();
2089 return (jint)-1;
2090 #endif
2091 WB_END
2092
2093 WB_ENTRY(jint, WB_GetCDSCurrentVersion(JNIEnv* env, jobject wb))
2094 #if INCLUDE_CDS
2095 return (jint)CURRENT_CDS_ARCHIVE_VERSION;
2096 #else
2097 ShouldNotReachHere();
2098 return (jint)-1;
2099 #endif
2100 WB_END
2101
2102 WB_ENTRY(jboolean, WB_CDSMemoryMappingFailed(JNIEnv* env, jobject wb))
2103 return FileMapInfo::memory_mapping_failed();
2104 WB_END
2105
2106 WB_ENTRY(jboolean, WB_IsSharedInternedString(JNIEnv* env, jobject wb, jobject str))
2107 ResourceMark rm(THREAD);
2108 oop str_oop = JNIHandles::resolve(str);
2109 int length;
2110 jchar* chars = java_lang_String::as_unicode_string(str_oop, length, CHECK_(false));
2111 return StringTable::lookup_shared(chars, length) == str_oop;
2112 WB_END
2113
2114 WB_ENTRY(jboolean, WB_IsSharedClass(JNIEnv* env, jobject wb, jclass clazz))
2115 return (jboolean)MetaspaceShared::is_in_shared_metaspace(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
2116 WB_END
2117
2118 WB_ENTRY(jboolean, WB_AreSharedStringsMapped(JNIEnv* env))
2119 return ArchiveHeapLoader::is_mapped();
2120 WB_END
2121
2122 WB_ENTRY(void, WB_LinkClass(JNIEnv* env, jobject wb, jclass clazz))
2123 Klass *k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz));
2124 if (!k->is_instance_klass()) {
2125 return;
2126 }
2127 InstanceKlass *ik = InstanceKlass::cast(k);
2128 ik->link_class(THREAD); // may throw verification error
2129 WB_END
2130
2131 WB_ENTRY(jboolean, WB_AreOpenArchiveHeapObjectsMapped(JNIEnv* env))
2132 return ArchiveHeapLoader::is_mapped();
2133 WB_END
2134
2135 WB_ENTRY(jboolean, WB_IsCDSIncluded(JNIEnv* env))
2136 #if INCLUDE_CDS
2137 // An exploded build inhibits use of CDS. Therefore, for the
2138 // purpose of testing, the JVM can be treated as not having CDS
2139 // built in at all.
2140 return ClassLoader::has_jrt_entry();
2141 #else
2142 return false;
2143 #endif // INCLUDE_CDS
2144 WB_END
2145
2146 WB_ENTRY(jboolean, WB_isC2OrJVMCIIncluded(JNIEnv* env))
2147 #if COMPILER2_OR_JVMCI
2148 return true;
2149 #else
2150 return false;
2151 #endif
2152 WB_END
2153
2154 WB_ENTRY(jboolean, WB_IsJVMCISupportedByGC(JNIEnv* env))
2155 #if INCLUDE_JVMCI
2156 return JVMCIGlobals::gc_supports_jvmci();
2157 #else
2158 return false;
2159 #endif
2160 WB_END
2161
2162 WB_ENTRY(jboolean, WB_CanWriteJavaHeapArchive(JNIEnv* env))
2163 return HeapShared::can_write()
2164 && ArchiveHeapLoader::can_use(); // work-around JDK-8341371
2165 WB_END
2166
2167
2168 WB_ENTRY(jboolean, WB_IsJFRIncluded(JNIEnv* env))
2169 #if INCLUDE_JFR
2170 return true;
2171 #else
2172 return false;
2173 #endif // INCLUDE_JFR
2174 WB_END
2175
2176 WB_ENTRY(jboolean, WB_IsDTraceIncluded(JNIEnv* env))
2177 #if defined(DTRACE_ENABLED)
2178 return true;
2179 #else
2180 return false;
2181 #endif // DTRACE_ENABLED
2182 WB_END
2183
2184 #if INCLUDE_CDS
2185
2186 WB_ENTRY(jint, WB_GetCDSOffsetForName(JNIEnv* env, jobject o, jstring name))
2187 ResourceMark rm;
2188 char* c_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name));
2189 jint result = (jint)CDSConstants::get_cds_offset(c_name);
2190 return result;
2191 WB_END
2192
2193 WB_ENTRY(jint, WB_GetCDSConstantForName(JNIEnv* env, jobject o, jstring name))
2194 ResourceMark rm;
2195 char* c_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name));
2196 jint result = (jint)CDSConstants::get_cds_constant(c_name);
2197 return result;
2198 WB_END
2199
2200 #endif // INCLUDE_CDS
2201
2202 WB_ENTRY(jboolean, WB_HandshakeReadMonitors(JNIEnv* env, jobject wb, jobject thread_handle))
2203 class ReadMonitorsClosure : public HandshakeClosure {
2204 jboolean _executed;
2205
2206 void do_thread(Thread* th) {
2207 JavaThread* jt = JavaThread::cast(th);
2208 ResourceMark rm;
2209
2210 GrowableArray<MonitorInfo*>* info = new GrowableArray<MonitorInfo*>();
2211
2212 if (!jt->has_last_Java_frame()) {
2213 return;
2214 }
2215 RegisterMap rmap(jt,
2216 RegisterMap::UpdateMap::include,
2217 RegisterMap::ProcessFrames::include,
2218 RegisterMap::WalkContinuation::skip);
2219 for (javaVFrame* vf = jt->last_java_vframe(&rmap); vf != nullptr; vf = vf->java_sender()) {
2220 GrowableArray<MonitorInfo*> *monitors = vf->monitors();
2221 if (monitors != nullptr) {
2222 int len = monitors->length();
2223 // Walk monitors youngest to oldest
2224 for (int i = len - 1; i >= 0; i--) {
2225 MonitorInfo* mon_info = monitors->at(i);
2226 if (mon_info->eliminated()) continue;
2227 oop owner = mon_info->owner();
2228 if (owner != nullptr) {
2229 info->append(mon_info);
2230 }
2231 }
2232 }
2233 }
2234 _executed = true;
2235 }
2236
2237 public:
2238 ReadMonitorsClosure() : HandshakeClosure("WB_HandshakeReadMonitors"), _executed(false) {}
2239 jboolean executed() const { return _executed; }
2240 };
2241
2242 ReadMonitorsClosure rmc;
2243 if (thread_handle != nullptr) {
2244 ThreadsListHandle tlh;
2245 JavaThread* target = nullptr;
2246 bool is_alive = tlh.cv_internal_thread_to_JavaThread(thread_handle, &target, nullptr);
2247 if (is_alive) {
2248 Handshake::execute(&rmc, &tlh, target);
2249 }
2250 }
2251 return rmc.executed();
2252 WB_END
2253
2254 WB_ENTRY(jint, WB_HandshakeWalkStack(JNIEnv* env, jobject wb, jobject thread_handle, jboolean all_threads))
2255 class TraceSelfClosure : public HandshakeClosure {
2256 jint _num_threads_completed;
2257
2258 void do_thread(Thread* th) {
2259 JavaThread* jt = JavaThread::cast(th);
2260 ResourceMark rm;
2261
2262 jt->print_on(tty);
2263 jt->print_stack_on(tty);
2264 tty->cr();
2265 Atomic::inc(&_num_threads_completed);
2266 }
2267
2268 public:
2269 TraceSelfClosure(Thread* thread) : HandshakeClosure("WB_TraceSelf"), _num_threads_completed(0) {}
2270
2271 jint num_threads_completed() const { return _num_threads_completed; }
2272 };
2273 TraceSelfClosure tsc(Thread::current());
2274
2275 if (all_threads) {
2276 Handshake::execute(&tsc);
2277 } else if (thread_handle != nullptr) {
2278 ThreadsListHandle tlh;
2279 JavaThread* target = nullptr;
2280 bool is_alive = tlh.cv_internal_thread_to_JavaThread(thread_handle, &target, nullptr);
2281 if (is_alive) {
2282 Handshake::execute(&tsc, &tlh, target);
2283 }
2284 }
2285 return tsc.num_threads_completed();
2286 WB_END
2287
2288 WB_ENTRY(void, WB_AsyncHandshakeWalkStack(JNIEnv* env, jobject wb, jobject thread_handle))
2289 class TraceSelfClosure : public AsyncHandshakeClosure {
2290 JavaThread* _self;
2291 void do_thread(Thread* th) {
2292 assert(th->is_Java_thread(), "sanity");
2293 // AsynchHandshake handshakes are only executed by target.
2294 assert(_self == th, "Must be");
2295 assert(Thread::current() == th, "Must be");
2296 JavaThread* jt = JavaThread::cast(th);
2297 ResourceMark rm;
2298 jt->print_on(tty);
2299 jt->print_stack_on(tty);
2300 tty->cr();
2301 }
2302
2303 public:
2304 TraceSelfClosure(JavaThread* self_target) : AsyncHandshakeClosure("WB_TraceSelf"), _self(self_target) {}
2305 };
2306 if (thread_handle != nullptr) {
2307 ThreadsListHandle tlh;
2308 JavaThread* target = nullptr;
2309 bool is_alive = tlh.cv_internal_thread_to_JavaThread(thread_handle, &target, nullptr);
2310 if (is_alive) {
2311 TraceSelfClosure* tsc = new TraceSelfClosure(target);
2312 Handshake::execute(tsc, target);
2313 }
2314 }
2315 WB_END
2316
2317 static volatile int _emulated_lock = 0;
2318
2319 WB_ENTRY(void, WB_LockAndBlock(JNIEnv* env, jobject wb, jboolean suspender))
2320 JavaThread* self = JavaThread::current();
2321
2322 {
2323 // Before trying to acquire the lock transition into a safepoint safe state.
2324 // Otherwise if either suspender or suspendee blocks for a safepoint
2325 // in ~ThreadBlockInVM the other one could loop forever trying to acquire
2326 // the lock without allowing the safepoint to progress.
2327 ThreadBlockInVM tbivm(self);
2328
2329 // We will deadlock here if we are 'suspender' and 'suspendee'
2330 // suspended in ~ThreadBlockInVM. This verifies we only suspend
2331 // at the right place.
2332 while (Atomic::cmpxchg(&_emulated_lock, 0, 1) != 0) {}
2333 assert(_emulated_lock == 1, "Must be locked");
2334
2335 // Sleep much longer in suspendee to force situation where
2336 // 'suspender' is waiting above to acquire lock.
2337 os::naked_short_sleep(suspender ? 1 : 10);
2338 }
2339 Atomic::store(&_emulated_lock, 0);
2340 WB_END
2341
2342 // Some convenience methods to deal with objects from java
2343 int WhiteBox::offset_for_field(const char* field_name, oop object,
2344 Symbol* signature_symbol) {
2345 assert(field_name != nullptr && strlen(field_name) > 0, "Field name not valid");
2346
2347 //Get the class of our object
2348 Klass* arg_klass = object->klass();
2349 //Turn it into an instance-klass
2350 InstanceKlass* ik = InstanceKlass::cast(arg_klass);
2351
2352 //Create symbols to look for in the class
2353 TempNewSymbol name_symbol = SymbolTable::new_symbol(field_name);
2354
2355 //To be filled in with an offset of the field we're looking for
2356 fieldDescriptor fd;
2357
2358 Klass* res = ik->find_field(name_symbol, signature_symbol, &fd);
2359 if (res == nullptr) {
2360 tty->print_cr("Invalid layout of %s at %s", ik->external_name(),
2361 name_symbol->as_C_string());
2362 vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:class+load=info to see the origin of the problem class");
2363 }
2364
2365 //fetch the field at the offset we've found
2366 int dest_offset = fd.offset();
2367
2368 return dest_offset;
2369 }
2370
2371
2372 const char* WhiteBox::lookup_jstring(const char* field_name, oop object) {
2373 int offset = offset_for_field(field_name, object,
2374 vmSymbols::string_signature());
2375 oop string = object->obj_field(offset);
2376 if (string == nullptr) {
2377 return nullptr;
2378 }
2379 const char* ret = java_lang_String::as_utf8_string(string);
2380 return ret;
2381 }
2382
2383 bool WhiteBox::lookup_bool(const char* field_name, oop object) {
2384 int offset =
2385 offset_for_field(field_name, object, vmSymbols::bool_signature());
2386 bool ret = (object->bool_field(offset) == JNI_TRUE);
2387 return ret;
2388 }
2389
2390 void WhiteBox::register_methods(JNIEnv* env, jclass wbclass, JavaThread* thread, JNINativeMethod* method_array, int method_count) {
2391 ResourceMark rm;
2392 Klass* klass = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(wbclass));
2393 const char* klass_name = klass->external_name();
2394
2395 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
2396
2397 // one by one registration natives for exception catching
2398 jclass no_such_method_error_klass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string());
2399 CHECK_JNI_EXCEPTION(env);
2400 for (int i = 0, n = method_count; i < n; ++i) {
2401 // Skip dummy entries
2402 if (method_array[i].fnPtr == nullptr) continue;
2403 if (env->RegisterNatives(wbclass, &method_array[i], 1) != 0) {
2404 jthrowable throwable_obj = env->ExceptionOccurred();
2405 if (throwable_obj != nullptr) {
2406 env->ExceptionClear();
2407 if (env->IsInstanceOf(throwable_obj, no_such_method_error_klass)) {
2408 // NoSuchMethodError is thrown when a method can't be found or a method is not native.
2409 // Ignoring the exception since it is not preventing use of other WhiteBox methods.
2410 tty->print_cr("Warning: 'NoSuchMethodError' on register of %s::%s%s",
2411 klass_name, method_array[i].name, method_array[i].signature);
2412 }
2413 } else {
2414 // Registration failed unexpectedly.
2415 tty->print_cr("Warning: unexpected error on register of %s::%s%s. All methods will be unregistered",
2416 klass_name, method_array[i].name, method_array[i].signature);
2417 env->UnregisterNatives(wbclass);
2418 break;
2419 }
2420 }
2421 }
2422 }
2423
2424 WB_ENTRY(jint, WB_AddCompilerDirective(JNIEnv* env, jobject o, jstring compDirect))
2425 // can't be in VM when we call JNI
2426 ThreadToNativeFromVM ttnfv(thread);
2427 const char* dir = env->GetStringUTFChars(compDirect, nullptr);
2428 CHECK_JNI_EXCEPTION_(env, 0);
2429 int ret;
2430 {
2431 ThreadInVMfromNative ttvfn(thread); // back to VM
2432 ret = DirectivesParser::parse_string(dir, tty);
2433 }
2434 env->ReleaseStringUTFChars(compDirect, dir);
2435 // -1 for error parsing directive. Return 0 as number of directives added.
2436 if (ret == -1) {
2437 ret = 0;
2438 }
2439 return (jint) ret;
2440 WB_END
2441
2442 WB_ENTRY(void, WB_RemoveCompilerDirective(JNIEnv* env, jobject o, jint count))
2443 DirectivesStack::pop(count);
2444 WB_END
2445
2446 // Checks that the library libfile has the noexecstack bit set.
2447 WB_ENTRY(jboolean, WB_CheckLibSpecifiesNoexecstack(JNIEnv* env, jobject o, jstring libfile))
2448 jboolean ret = false;
2449 #ifdef LINUX
2450 // Can't be in VM when we call JNI.
2451 ThreadToNativeFromVM ttnfv(thread);
2452 const char* lf = env->GetStringUTFChars(libfile, nullptr);
2453 CHECK_JNI_EXCEPTION_(env, 0);
2454 ret = (jboolean) ElfFile::specifies_noexecstack(lf);
2455 env->ReleaseStringUTFChars(libfile, lf);
2456 #endif
2457 return ret;
2458 WB_END
2459
2460 WB_ENTRY(jboolean, WB_IsContainerized(JNIEnv* env, jobject o))
2461 LINUX_ONLY(return OSContainer::is_containerized();)
2462 return false;
2463 WB_END
2464
2465 // Physical memory of the host machine (including containers)
2466 WB_ENTRY(jlong, WB_HostPhysicalMemory(JNIEnv* env, jobject o))
2467 LINUX_ONLY(return os::Linux::physical_memory();)
2468 return os::physical_memory();
2469 WB_END
2470
2471 // Physical swap of the host machine (including containers), Linux only.
2472 WB_ENTRY(jlong, WB_HostPhysicalSwap(JNIEnv* env, jobject o))
2473 LINUX_ONLY(return (jlong)os::Linux::host_swap();)
2474 return -1; // Not used/implemented on other platforms
2475 WB_END
2476
2477 WB_ENTRY(jint, WB_ValidateCgroup(JNIEnv* env,
2478 jobject o,
2479 jstring proc_cgroups,
2480 jstring proc_self_cgroup,
2481 jstring proc_self_mountinfo))
2482 jint ret = 0;
2483 #ifdef LINUX
2484 ThreadToNativeFromVM ttnfv(thread);
2485 const char* p_cgroups = env->GetStringUTFChars(proc_cgroups, nullptr);
2486 CHECK_JNI_EXCEPTION_(env, 0);
2487 const char* p_s_cgroup = env->GetStringUTFChars(proc_self_cgroup, nullptr);
2488 CHECK_JNI_EXCEPTION_(env, 0);
2489 const char* p_s_mountinfo = env->GetStringUTFChars(proc_self_mountinfo, nullptr);
2490 CHECK_JNI_EXCEPTION_(env, 0);
2491 u1 cg_type_flags = 0;
2492 // This sets cg_type_flags
2493 WhiteBox::validate_cgroup(p_cgroups, p_s_cgroup, p_s_mountinfo, &cg_type_flags);
2494 ret = (jint)cg_type_flags;
2495 env->ReleaseStringUTFChars(proc_cgroups, p_cgroups);
2496 env->ReleaseStringUTFChars(proc_self_cgroup, p_s_cgroup);
2497 env->ReleaseStringUTFChars(proc_self_mountinfo, p_s_mountinfo);
2498 #endif
2499 return ret;
2500 WB_END
2501
2502 // Available cpus of the host machine, Linux only.
2503 // Used in container testing.
2504 WB_ENTRY(jint, WB_HostCPUs(JNIEnv* env, jobject o))
2505 LINUX_ONLY(return os::Linux::active_processor_count();)
2506 return -1; // Not used/implemented on other platforms
2507 WB_END
2508
2509 WB_ENTRY(void, WB_PrintOsInfo(JNIEnv* env, jobject o))
2510 os::print_os_info(tty);
2511 WB_END
2512
2513 // Elf decoder
2514 WB_ENTRY(void, WB_DisableElfSectionCache(JNIEnv* env))
2515 #if !defined(_WINDOWS) && !defined(__APPLE__) && !defined(_AIX)
2516 ElfFile::_do_not_cache_elf_section = true;
2517 #endif
2518 WB_END
2519
2520 WB_ENTRY(jlong, WB_ResolvedMethodItemsCount(JNIEnv* env, jobject o))
2521 return (jlong) ResolvedMethodTable::items_count();
2522 WB_END
2523
2524 WB_ENTRY(jint, WB_ProtectionDomainRemovedCount(JNIEnv* env, jobject o))
2525 return (jint) ProtectionDomainCacheTable::removed_entries_count();
2526 WB_END
2527
2528 WB_ENTRY(jint, WB_GetKlassMetadataSize(JNIEnv* env, jobject wb, jclass mirror))
2529 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(mirror));
2530 // Return size in bytes.
2531 return k->size() * wordSize;
2532 WB_END
2533
2534 // See test/hotspot/jtreg/runtime/Thread/ThreadObjAccessAtExit.java.
2535 // It explains how the thread's priority field is used for test state coordination.
2536 //
2537 WB_ENTRY(void, WB_CheckThreadObjOfTerminatingThread(JNIEnv* env, jobject wb, jobject target_handle))
2538 oop target_oop = JNIHandles::resolve_non_null(target_handle);
2539 jlong tid = java_lang_Thread::thread_id(target_oop);
2540 JavaThread* target = java_lang_Thread::thread(target_oop);
2541
2542 // Grab a ThreadsListHandle to protect the target thread whilst terminating
2543 ThreadsListHandle tlh;
2544
2545 // Look up the target thread by tid to ensure it is present
2546 JavaThread* t = tlh.list()->find_JavaThread_from_java_tid(tid);
2547 if (t == nullptr) {
2548 THROW_MSG(vmSymbols::java_lang_RuntimeException(), "Target thread not found in ThreadsList!");
2549 }
2550
2551 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: target thread is protected");
2552 // Allow target to terminate by boosting priority
2553 java_lang_Thread::set_priority(t->threadObj(), ThreadPriority(NormPriority + 1));
2554
2555 // Now wait for the target to terminate
2556 while (!target->is_terminated()) {
2557 ThreadBlockInVM tbivm(thread); // just in case target is involved in a safepoint
2558 os::naked_short_sleep(0);
2559 }
2560
2561 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: target thread is terminated");
2562
2563 // Now release the GC inducing thread - we have to re-resolve the external oop that
2564 // was passed in as GC may have occurred and we don't know if we can trust t->threadObj() now.
2565 oop original = JNIHandles::resolve_non_null(target_handle);
2566 java_lang_Thread::set_priority(original, ThreadPriority(NormPriority + 2));
2567
2568 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: GC has been initiated - checking threadObj:");
2569
2570 // The Java code should be creating garbage and triggering GC, which would potentially move
2571 // the threadObj oop. If the exiting thread is properly protected then its threadObj should
2572 // remain valid and equal to our initial target_handle. Loop a few times to give GC a chance to
2573 // kick in.
2574 for (int i = 0; i < 5; i++) {
2575 oop original = JNIHandles::resolve_non_null(target_handle);
2576 oop current = t->threadObj();
2577 if (original != current) {
2578 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: failed comparison on iteration %d", i);
2579 THROW_MSG(vmSymbols::java_lang_RuntimeException(), "Target thread oop has changed!");
2580 } else {
2581 tty->print_cr("WB_CheckThreadObjOfTerminatingThread: successful comparison on iteration %d", i);
2582 ThreadBlockInVM tbivm(thread);
2583 os::naked_short_sleep(50);
2584 }
2585 }
2586 WB_END
2587
2588 WB_ENTRY(void, WB_VerifyFrames(JNIEnv* env, jobject wb, jboolean log, jboolean update_map))
2589 ResourceMark rm; // for verify
2590 stringStream st;
2591 for (StackFrameStream fst(JavaThread::current(), update_map, true); !fst.is_done(); fst.next()) {
2592 frame* current_frame = fst.current();
2593 if (log) {
2594 current_frame->print_value_on(&st);
2595 }
2596 current_frame->verify(fst.register_map());
2597 }
2598 if (log) {
2599 tty->print_cr("[WhiteBox::VerifyFrames] Walking Frames");
2600 tty->print_raw(st.freeze());
2601 tty->print_cr("[WhiteBox::VerifyFrames] Done");
2602 }
2603 WB_END
2604
2605 WB_ENTRY(jboolean, WB_IsJVMTIIncluded(JNIEnv* env, jobject wb))
2606 #if INCLUDE_JVMTI
2607 return JNI_TRUE;
2608 #else
2609 return JNI_FALSE;
2610 #endif
2611 WB_END
2612
2613 WB_ENTRY(void, WB_WaitUnsafe(JNIEnv* env, jobject wb, jint time))
2614 os::naked_short_sleep(time);
2615 WB_END
2616
2617 WB_ENTRY(jstring, WB_GetLibcName(JNIEnv* env, jobject o))
2618 ThreadToNativeFromVM ttn(thread);
2619 jstring info_string = env->NewStringUTF(XSTR(LIBC));
2620 CHECK_JNI_EXCEPTION_(env, nullptr);
2621 return info_string;
2622 WB_END
2623
2624 WB_ENTRY(void, WB_LockCritical(JNIEnv* env, jobject wb))
2625 GCLocker::lock_critical(thread);
2626 WB_END
2627
2628 WB_ENTRY(void, WB_UnlockCritical(JNIEnv* env, jobject wb))
2629 GCLocker::unlock_critical(thread);
2630 WB_END
2631
2632 WB_ENTRY(void, WB_PinObject(JNIEnv* env, jobject wb, jobject o))
2633 #if INCLUDE_G1GC
2634 if (!UseG1GC) {
2635 ShouldNotReachHere();
2636 return;
2637 }
2638 oop obj = JNIHandles::resolve(o);
2639 G1CollectedHeap::heap()->pin_object(thread, obj);
2640 #else
2641 ShouldNotReachHere();
2642 #endif // INCLUDE_G1GC
2643 WB_END
2644
2645 WB_ENTRY(void, WB_UnpinObject(JNIEnv* env, jobject wb, jobject o))
2646 #if INCLUDE_G1GC
2647 if (!UseG1GC) {
2648 ShouldNotReachHere();
2649 return;
2650 }
2651 oop obj = JNIHandles::resolve(o);
2652 G1CollectedHeap::heap()->unpin_object(thread, obj);
2653 #else
2654 ShouldNotReachHere();
2655 #endif // INCLUDE_G1GC
2656 WB_END
2657
2658 WB_ENTRY(jboolean, WB_SetVirtualThreadsNotifyJvmtiMode(JNIEnv* env, jobject wb, jboolean enable))
2659 if (!Continuations::enabled()) {
2660 tty->print_cr("WB error: must be Continuations::enabled()!");
2661 return JNI_FALSE;
2662 }
2663 jboolean result = false;
2664 #if INCLUDE_JVMTI
2665 if (enable) {
2666 result = JvmtiEnvBase::enable_virtual_threads_notify_jvmti();
2667 } else {
2668 result = JvmtiEnvBase::disable_virtual_threads_notify_jvmti();
2669 }
2670 #endif
2671 return result;
2672 WB_END
2673
2674 WB_ENTRY(void, WB_PreTouchMemory(JNIEnv* env, jobject wb, jlong addr, jlong size))
2675 void* const from = (void*)addr;
2676 void* const to = (void*)(addr + size);
2677 if (from > to) {
2678 os::pretouch_memory(from, to, os::vm_page_size());
2679 }
2680 WB_END
2681
2682 WB_ENTRY(void, WB_CleanMetaspaces(JNIEnv* env, jobject target))
2683 ClassLoaderDataGraph::safepoint_and_clean_metaspaces();
2684 WB_END
2685
2686 // Reports resident set size (RSS) in bytes
2687 WB_ENTRY(jlong, WB_Rss(JNIEnv* env, jobject o))
2688 return os::rss();
2689 WB_END
2690
2691 #define CC (char*)
2692
2693 static JNINativeMethod methods[] = {
2694 {CC"getObjectAddress0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress },
2695 {CC"getObjectSize0", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectSize },
2696 {CC"isObjectInOldGen0", CC"(Ljava/lang/Object;)Z", (void*)&WB_isObjectInOldGen },
2697 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize },
2698 {CC"getVMPageSize", CC"()I", (void*)&WB_GetVMPageSize },
2699 {CC"getVMAllocationGranularity", CC"()J", (void*)&WB_GetVMAllocationGranularity },
2700 {CC"getVMLargePageSize", CC"()J", (void*)&WB_GetVMLargePageSize},
2701 {CC"getHeapSpaceAlignment", CC"()J", (void*)&WB_GetHeapSpaceAlignment},
2702 {CC"getHeapAlignment", CC"()J", (void*)&WB_GetHeapAlignment},
2703 {CC"countAliveClasses0", CC"(Ljava/lang/String;)I", (void*)&WB_CountAliveClasses },
2704 {CC"getSymbolRefcount", CC"(Ljava/lang/String;)I", (void*)&WB_GetSymbolRefcount },
2705 {CC"parseCommandLine0",
2706 CC"(Ljava/lang/String;C[Ljdk/test/whitebox/parser/DiagnosticCommand;)[Ljava/lang/Object;",
2707 (void*) &WB_ParseCommandLine
2708 },
2709 {CC"addToBootstrapClassLoaderSearch0", CC"(Ljava/lang/String;)V",
2710 (void*)&WB_AddToBootstrapClassLoaderSearch},
2711 {CC"addToSystemClassLoaderSearch0", CC"(Ljava/lang/String;)V",
2712 (void*)&WB_AddToSystemClassLoaderSearch},
2713 {CC"getCompressedOopsMaxHeapSize", CC"()J",
2714 (void*)&WB_GetCompressedOopsMaxHeapSize},
2715 {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes },
2716 {CC"readFromNoaccessArea",CC"()V", (void*)&WB_ReadFromNoaccessArea},
2717 {CC"stressVirtualSpaceResize",CC"(JJJ)I", (void*)&WB_StressVirtualSpaceResize},
2718 #if INCLUDE_CDS
2719 {CC"getCDSOffsetForName0", CC"(Ljava/lang/String;)I", (void*)&WB_GetCDSOffsetForName},
2720 {CC"getCDSConstantForName0", CC"(Ljava/lang/String;)I", (void*)&WB_GetCDSConstantForName},
2721 #endif
2722 #if INCLUDE_G1GC
2723 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark},
2724 {CC"g1CompletedConcurrentMarkCycles", CC"()I", (void*)&WB_G1CompletedConcurrentMarkCycles},
2725 {CC"g1IsHumongous0", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous },
2726 {CC"g1BelongsToHumongousRegion0", CC"(J)Z", (void*)&WB_G1BelongsToHumongousRegion},
2727 {CC"g1BelongsToFreeRegion0", CC"(J)Z", (void*)&WB_G1BelongsToFreeRegion},
2728 {CC"g1NumMaxRegions", CC"()J", (void*)&WB_G1NumMaxRegions },
2729 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions },
2730 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize },
2731 {CC"g1HasRegionsToUncommit", CC"()Z", (void*)&WB_G1HasRegionsToUncommit},
2732 {CC"g1AuxiliaryMemoryUsage", CC"()Ljava/lang/management/MemoryUsage;",
2733 (void*)&WB_G1AuxiliaryMemoryUsage },
2734 {CC"g1ActiveMemoryNodeCount", CC"()I", (void*)&WB_G1ActiveMemoryNodeCount },
2735 {CC"g1MemoryNodeIds", CC"()[I", (void*)&WB_G1MemoryNodeIds },
2736 {CC"g1GetMixedGCInfo", CC"(I)[J", (void*)&WB_G1GetMixedGCInfo },
2737 #endif // INCLUDE_G1GC
2738 #if INCLUDE_PARALLELGC
2739 {CC"psVirtualSpaceAlignment",CC"()J", (void*)&WB_PSVirtualSpaceAlignment},
2740 {CC"psHeapGenerationAlignment",CC"()J", (void*)&WB_PSHeapGenerationAlignment},
2741 #endif
2742 {CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc },
2743 {CC"NMTMallocWithPseudoStack", CC"(JI)J", (void*)&WB_NMTMallocWithPseudoStack},
2744 {CC"NMTMallocWithPseudoStackAndType", CC"(JII)J", (void*)&WB_NMTMallocWithPseudoStackAndType},
2745 {CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree },
2746 {CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory },
2747 {CC"NMTAttemptReserveMemoryAt", CC"(JJ)J", (void*)&WB_NMTAttemptReserveMemoryAt },
2748 {CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory },
2749 {CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory },
2750 {CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory },
2751 {CC"NMTGetHashSize", CC"()I", (void*)&WB_NMTGetHashSize },
2752 {CC"NMTNewArena", CC"(J)J", (void*)&WB_NMTNewArena },
2753 {CC"NMTFreeArena", CC"(J)V", (void*)&WB_NMTFreeArena },
2754 {CC"NMTArenaMalloc", CC"(JJ)V", (void*)&WB_NMTArenaMalloc },
2755 {CC"deoptimizeFrames", CC"(Z)I", (void*)&WB_DeoptimizeFrames },
2756 {CC"isFrameDeoptimized", CC"(I)Z", (void*)&WB_IsFrameDeoptimized},
2757 {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll },
2758 {CC"deoptimizeMethod0", CC"(Ljava/lang/reflect/Executable;Z)I",
2759 (void*)&WB_DeoptimizeMethod },
2760 {CC"isMethodCompiled0", CC"(Ljava/lang/reflect/Executable;Z)Z",
2761 (void*)&WB_IsMethodCompiled },
2762 {CC"isMethodCompilable0", CC"(Ljava/lang/reflect/Executable;IZ)Z",
2763 (void*)&WB_IsMethodCompilable},
2764 {CC"isMethodQueuedForCompilation0",
2765 CC"(Ljava/lang/reflect/Executable;)Z", (void*)&WB_IsMethodQueuedForCompilation},
2766 {CC"isIntrinsicAvailable0",
2767 CC"(Ljava/lang/reflect/Executable;Ljava/lang/reflect/Executable;I)Z",
2768 (void*)&WB_IsIntrinsicAvailable},
2769 {CC"makeMethodNotCompilable0",
2770 CC"(Ljava/lang/reflect/Executable;IZ)V", (void*)&WB_MakeMethodNotCompilable},
2771 {CC"testSetDontInlineMethod0",
2772 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetDontInlineMethod},
2773 {CC"getMethodCompilationLevel0",
2774 CC"(Ljava/lang/reflect/Executable;Z)I", (void*)&WB_GetMethodCompilationLevel},
2775 {CC"getMethodDecompileCount0",
2776 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodDecompileCount},
2777 {CC"getMethodTrapCount0",
2778 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2779 (void*)&WB_GetMethodTrapCount},
2780 {CC"getDeoptCount0",
2781 CC"(Ljava/lang/String;Ljava/lang/String;)I", (void*)&WB_GetDeoptCount},
2782 {CC"getMethodEntryBci0",
2783 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodEntryBci},
2784 {CC"getCompileQueueSize",
2785 CC"(I)I", (void*)&WB_GetCompileQueueSize},
2786 {CC"testSetForceInlineMethod0",
2787 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetForceInlineMethod},
2788 {CC"enqueueMethodForCompilation0",
2789 CC"(Ljava/lang/reflect/Executable;II)Z", (void*)&WB_EnqueueMethodForCompilation},
2790 {CC"enqueueInitializerForCompilation0",
2791 CC"(Ljava/lang/Class;I)Z", (void*)&WB_EnqueueInitializerForCompilation},
2792 {CC"markMethodProfiled",
2793 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_MarkMethodProfiled},
2794 {CC"clearMethodState0",
2795 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState},
2796 {CC"lockCompilation", CC"()V", (void*)&WB_LockCompilation},
2797 {CC"unlockCompilation", CC"()V", (void*)&WB_UnlockCompilation},
2798 {CC"matchesMethod",
2799 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2800 (void*)&WB_MatchesMethod},
2801 {CC"matchesInline",
2802 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)I",
2803 (void*)&WB_MatchesInline},
2804 {CC"shouldPrintAssembly",
2805 CC"(Ljava/lang/reflect/Executable;I)Z",
2806 (void*)&WB_ShouldPrintAssembly},
2807
2808 {CC"isConstantVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsConstantVMFlag},
2809 {CC"isDefaultVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsDefaultVMFlag},
2810 {CC"isLockedVMFlag", CC"(Ljava/lang/String;)Z", (void*)&WB_IsLockedVMFlag},
2811 {CC"setBooleanVMFlag", CC"(Ljava/lang/String;Z)V",(void*)&WB_SetBooleanVMFlag},
2812 {CC"setIntVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntVMFlag},
2813 {CC"setUintVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintVMFlag},
2814 {CC"setIntxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntxVMFlag},
2815 {CC"setUintxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintxVMFlag},
2816 {CC"setUint64VMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUint64VMFlag},
2817 {CC"setSizeTVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetSizeTVMFlag},
2818 {CC"setDoubleVMFlag", CC"(Ljava/lang/String;D)V",(void*)&WB_SetDoubleVMFlag},
2819 {CC"setStringVMFlag", CC"(Ljava/lang/String;Ljava/lang/String;)V",
2820 (void*)&WB_SetStringVMFlag},
2821 {CC"getBooleanVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Boolean;",
2822 (void*)&WB_GetBooleanVMFlag},
2823 {CC"getIntVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2824 (void*)&WB_GetIntVMFlag},
2825 {CC"getUintVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2826 (void*)&WB_GetUintVMFlag},
2827 {CC"getIntxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2828 (void*)&WB_GetIntxVMFlag},
2829 {CC"getUintxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2830 (void*)&WB_GetUintxVMFlag},
2831 {CC"getUint64VMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2832 (void*)&WB_GetUint64VMFlag},
2833 {CC"getSizeTVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
2834 (void*)&WB_GetSizeTVMFlag},
2835 {CC"getDoubleVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Double;",
2836 (void*)&WB_GetDoubleVMFlag},
2837 {CC"getStringVMFlag", CC"(Ljava/lang/String;)Ljava/lang/String;",
2838 (void*)&WB_GetStringVMFlag},
2839 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable },
2840 {CC"fullGC", CC"()V", (void*)&WB_FullGC },
2841 {CC"youngGC", CC"()V", (void*)&WB_YoungGC },
2842 {CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory },
2843 {CC"allocateMetaspace",
2844 CC"(Ljava/lang/ClassLoader;J)J", (void*)&WB_AllocateMetaspace },
2845 {CC"incMetaspaceCapacityUntilGC", CC"(J)J", (void*)&WB_IncMetaspaceCapacityUntilGC },
2846 {CC"metaspaceCapacityUntilGC", CC"()J", (void*)&WB_MetaspaceCapacityUntilGC },
2847 {CC"metaspaceSharedRegionAlignment", CC"()J", (void*)&WB_MetaspaceSharedRegionAlignment },
2848 {CC"getCPUFeatures", CC"()Ljava/lang/String;", (void*)&WB_GetCPUFeatures },
2849 {CC"getNMethod0", CC"(Ljava/lang/reflect/Executable;Z)[Ljava/lang/Object;",
2850 (void*)&WB_GetNMethod },
2851 {CC"allocateCodeBlob", CC"(II)J", (void*)&WB_AllocateCodeBlob },
2852 {CC"freeCodeBlob", CC"(J)V", (void*)&WB_FreeCodeBlob },
2853 {CC"getCodeHeapEntries", CC"(I)[Ljava/lang/Object;",(void*)&WB_GetCodeHeapEntries },
2854 {CC"getCompilationActivityMode",
2855 CC"()I", (void*)&WB_GetCompilationActivityMode},
2856 {CC"getMethodData0", CC"(Ljava/lang/reflect/Executable;)J",
2857 (void*)&WB_GetMethodData },
2858 {CC"getCodeBlob", CC"(J)[Ljava/lang/Object;",(void*)&WB_GetCodeBlob },
2859 {CC"getThreadStackSize", CC"()J", (void*)&WB_GetThreadStackSize },
2860 {CC"getThreadRemainingStackSize", CC"()J", (void*)&WB_GetThreadRemainingStackSize },
2861 {CC"DefineModule", CC"(Ljava/lang/Object;ZLjava/lang/String;Ljava/lang/String;[Ljava/lang/Object;)V",
2862 (void*)&WB_DefineModule },
2863 {CC"AddModuleExports", CC"(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/Object;)V",
2864 (void*)&WB_AddModuleExports },
2865 {CC"AddReadsModule", CC"(Ljava/lang/Object;Ljava/lang/Object;)V",
2866 (void*)&WB_AddReadsModule },
2867 {CC"AddModuleExportsToAllUnnamed", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
2868 (void*)&WB_AddModuleExportsToAllUnnamed },
2869 {CC"AddModuleExportsToAll", CC"(Ljava/lang/Object;Ljava/lang/String;)V",
2870 (void*)&WB_AddModuleExportsToAll },
2871 {CC"deflateIdleMonitors", CC"()Z", (void*)&WB_DeflateIdleMonitors },
2872 {CC"isMonitorInflated0", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsMonitorInflated },
2873 {CC"getInUseMonitorCount", CC"()J", (void*)&WB_getInUseMonitorCount },
2874 {CC"getLockStackCapacity", CC"()I", (void*)&WB_getLockStackCapacity },
2875 {CC"supportsRecursiveLightweightLocking", CC"()Z", (void*)&WB_supportsRecursiveLightweightLocking },
2876 {CC"forceSafepoint", CC"()V", (void*)&WB_ForceSafepoint },
2877 {CC"forceClassLoaderStatsSafepoint", CC"()V", (void*)&WB_ForceClassLoaderStatsSafepoint },
2878 {CC"getConstantPool0", CC"(Ljava/lang/Class;)J", (void*)&WB_GetConstantPool },
2879 {CC"getResolvedReferences0", CC"(Ljava/lang/Class;)[Ljava/lang/Object;", (void*)&WB_GetResolvedReferences},
2880 {CC"getFieldEntriesLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_getFieldEntriesLength},
2881 {CC"getFieldCPIndex0", CC"(Ljava/lang/Class;I)I", (void*)&WB_getFieldCPIndex},
2882 {CC"getMethodEntriesLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_getMethodEntriesLength},
2883 {CC"getMethodCPIndex0", CC"(Ljava/lang/Class;I)I", (void*)&WB_getMethodCPIndex},
2884 {CC"getIndyInfoLength0", CC"(Ljava/lang/Class;)I", (void*)&WB_getIndyInfoLength},
2885 {CC"getIndyCPIndex0", CC"(Ljava/lang/Class;I)I", (void*)&WB_getIndyCPIndex},
2886 {CC"printClasses0", CC"(Ljava/lang/String;I)Ljava/lang/String;", (void*)&WB_printClasses},
2887 {CC"printMethods0", CC"(Ljava/lang/String;Ljava/lang/String;I)Ljava/lang/String;", (void*)&WB_printMethods},
2888 {CC"getMethodBooleanOption",
2889 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Boolean;",
2890 (void*)&WB_GetMethodBooleaneOption},
2891 {CC"getMethodIntxOption",
2892 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
2893 (void*)&WB_GetMethodIntxOption},
2894 {CC"getMethodUintxOption",
2895 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Long;",
2896 (void*)&WB_GetMethodUintxOption},
2897 {CC"getMethodDoubleOption",
2898 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/Double;",
2899 (void*)&WB_GetMethodDoubleOption},
2900 {CC"getMethodStringOption",
2901 CC"(Ljava/lang/reflect/Executable;Ljava/lang/String;)Ljava/lang/String;",
2902 (void*)&WB_GetMethodStringOption},
2903 {CC"getDefaultArchivePath", CC"()Ljava/lang/String;",
2904 (void*)&WB_GetDefaultArchivePath},
2905 {CC"getCDSGenericHeaderMinVersion", CC"()I", (void*)&WB_GetCDSGenericHeaderMinVersion},
2906 {CC"getCurrentCDSVersion", CC"()I", (void*)&WB_GetCDSCurrentVersion},
2907 {CC"isSharingEnabled", CC"()Z", (void*)&WB_IsSharingEnabled},
2908 {CC"isSharedInternedString", CC"(Ljava/lang/String;)Z", (void*)&WB_IsSharedInternedString },
2909 {CC"isSharedClass", CC"(Ljava/lang/Class;)Z", (void*)&WB_IsSharedClass },
2910 {CC"areSharedStringsMapped", CC"()Z", (void*)&WB_AreSharedStringsMapped },
2911 {CC"linkClass", CC"(Ljava/lang/Class;)V", (void*)&WB_LinkClass},
2912 {CC"areOpenArchiveHeapObjectsMapped", CC"()Z", (void*)&WB_AreOpenArchiveHeapObjectsMapped},
2913 {CC"isCDSIncluded", CC"()Z", (void*)&WB_IsCDSIncluded },
2914 {CC"isJFRIncluded", CC"()Z", (void*)&WB_IsJFRIncluded },
2915 {CC"isDTraceIncluded", CC"()Z", (void*)&WB_IsDTraceIncluded },
2916 {CC"hasLibgraal", CC"()Z", (void*)&WB_HasLibgraal },
2917 {CC"isC2OrJVMCIIncluded", CC"()Z", (void*)&WB_isC2OrJVMCIIncluded },
2918 {CC"isJVMCISupportedByGC", CC"()Z", (void*)&WB_IsJVMCISupportedByGC},
2919 {CC"canWriteJavaHeapArchive", CC"()Z", (void*)&WB_CanWriteJavaHeapArchive },
2920 {CC"cdsMemoryMappingFailed", CC"()Z", (void*)&WB_CDSMemoryMappingFailed },
2921
2922 {CC"clearInlineCaches0", CC"(Z)V", (void*)&WB_ClearInlineCaches },
2923 {CC"handshakeReadMonitors", CC"(Ljava/lang/Thread;)Z", (void*)&WB_HandshakeReadMonitors },
2924 {CC"handshakeWalkStack", CC"(Ljava/lang/Thread;Z)I", (void*)&WB_HandshakeWalkStack },
2925 {CC"asyncHandshakeWalkStack", CC"(Ljava/lang/Thread;)V", (void*)&WB_AsyncHandshakeWalkStack },
2926 {CC"lockAndBlock", CC"(Z)V", (void*)&WB_LockAndBlock},
2927 {CC"checkThreadObjOfTerminatingThread", CC"(Ljava/lang/Thread;)V", (void*)&WB_CheckThreadObjOfTerminatingThread },
2928 {CC"verifyFrames", CC"(ZZ)V", (void*)&WB_VerifyFrames },
2929 {CC"addCompilerDirective", CC"(Ljava/lang/String;)I",
2930 (void*)&WB_AddCompilerDirective },
2931 {CC"removeCompilerDirective", CC"(I)V", (void*)&WB_RemoveCompilerDirective },
2932 {CC"isGCSupported", CC"(I)Z", (void*)&WB_IsGCSupported},
2933 {CC"isGCSupportedByJVMCICompiler", CC"(I)Z", (void*)&WB_IsGCSupportedByJVMCICompiler},
2934 {CC"isGCSelected", CC"(I)Z", (void*)&WB_IsGCSelected},
2935 {CC"isGCSelectedErgonomically", CC"()Z", (void*)&WB_IsGCSelectedErgonomically},
2936 {CC"supportsConcurrentGCBreakpoints", CC"()Z", (void*)&WB_SupportsConcurrentGCBreakpoints},
2937 {CC"concurrentGCAcquireControl0", CC"()V", (void*)&WB_ConcurrentGCAcquireControl},
2938 {CC"concurrentGCReleaseControl0", CC"()V", (void*)&WB_ConcurrentGCReleaseControl},
2939 {CC"concurrentGCRunToIdle0", CC"()V", (void*)&WB_ConcurrentGCRunToIdle},
2940 {CC"concurrentGCRunTo0", CC"(Ljava/lang/String;)Z",
2941 (void*)&WB_ConcurrentGCRunTo},
2942 {CC"checkLibSpecifiesNoexecstack", CC"(Ljava/lang/String;)Z",
2943 (void*)&WB_CheckLibSpecifiesNoexecstack},
2944 {CC"isContainerized", CC"()Z", (void*)&WB_IsContainerized },
2945 {CC"validateCgroup",
2946 CC"(Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;)I",
2947 (void*)&WB_ValidateCgroup },
2948 {CC"hostPhysicalMemory", CC"()J", (void*)&WB_HostPhysicalMemory },
2949 {CC"hostPhysicalSwap", CC"()J", (void*)&WB_HostPhysicalSwap },
2950 {CC"hostCPUs", CC"()I", (void*)&WB_HostCPUs },
2951 {CC"printOsInfo", CC"()V", (void*)&WB_PrintOsInfo },
2952 {CC"disableElfSectionCache", CC"()V", (void*)&WB_DisableElfSectionCache },
2953 {CC"resolvedMethodItemsCount", CC"()J", (void*)&WB_ResolvedMethodItemsCount },
2954 {CC"protectionDomainRemovedCount", CC"()I", (void*)&WB_ProtectionDomainRemovedCount },
2955 {CC"getKlassMetadataSize", CC"(Ljava/lang/Class;)I",(void*)&WB_GetKlassMetadataSize},
2956
2957 {CC"createMetaspaceTestContext", CC"(JJ)J", (void*)&WB_CreateMetaspaceTestContext},
2958 {CC"destroyMetaspaceTestContext", CC"(J)V", (void*)&WB_DestroyMetaspaceTestContext},
2959 {CC"purgeMetaspaceTestContext", CC"(J)V", (void*)&WB_PurgeMetaspaceTestContext},
2960 {CC"printMetaspaceTestContext", CC"(J)V", (void*)&WB_PrintMetaspaceTestContext},
2961 {CC"getTotalCommittedWordsInMetaspaceTestContext", CC"(J)J",(void*)&WB_GetTotalCommittedWordsInMetaspaceTestContext},
2962 {CC"getTotalUsedWordsInMetaspaceTestContext", CC"(J)J", (void*)&WB_GetTotalUsedWordsInMetaspaceTestContext},
2963 {CC"createArenaInTestContext", CC"(JZ)J", (void*)&WB_CreateArenaInTestContext},
2964 {CC"destroyMetaspaceTestArena", CC"(J)V", (void*)&WB_DestroyMetaspaceTestArena},
2965 {CC"allocateFromMetaspaceTestArena", CC"(JJ)J", (void*)&WB_AllocateFromMetaspaceTestArena},
2966 {CC"deallocateToMetaspaceTestArena", CC"(JJJ)V", (void*)&WB_DeallocateToMetaspaceTestArena},
2967 {CC"maxMetaspaceAllocationSize", CC"()J", (void*)&WB_GetMaxMetaspaceAllocationSize},
2968
2969 {CC"isJVMTIIncluded", CC"()Z", (void*)&WB_IsJVMTIIncluded},
2970 {CC"waitUnsafe", CC"(I)V", (void*)&WB_WaitUnsafe},
2971 {CC"getLibcName", CC"()Ljava/lang/String;", (void*)&WB_GetLibcName},
2972
2973 {CC"lockCritical", CC"()V", (void*)&WB_LockCritical},
2974 {CC"unlockCritical", CC"()V", (void*)&WB_UnlockCritical},
2975 {CC"pinObject", CC"(Ljava/lang/Object;)V", (void*)&WB_PinObject},
2976 {CC"unpinObject", CC"(Ljava/lang/Object;)V", (void*)&WB_UnpinObject},
2977 {CC"setVirtualThreadsNotifyJvmtiMode", CC"(Z)Z", (void*)&WB_SetVirtualThreadsNotifyJvmtiMode},
2978 {CC"preTouchMemory", CC"(JJ)V", (void*)&WB_PreTouchMemory},
2979 {CC"cleanMetaspaces", CC"()V", (void*)&WB_CleanMetaspaces},
2980 {CC"rss", CC"()J", (void*)&WB_Rss},
2981 {CC"printString", CC"(Ljava/lang/String;I)Ljava/lang/String;", (void*)&WB_PrintString},
2982 };
2983
2984
2985 #undef CC
2986
2987 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass))
2988 {
2989 if (WhiteBoxAPI) {
2990 // Make sure that wbclass is loaded by the null classloader
2991 InstanceKlass* ik = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve(wbclass)));
2992 Handle loader(THREAD, ik->class_loader());
2993 if (loader.is_null()) {
2994 WhiteBox::register_methods(env, wbclass, thread, methods, sizeof(methods) / sizeof(methods[0]));
2995 WhiteBox::set_used();
2996 }
2997 }
2998 }
2999 JVM_END