1 /*
2 * Copyright (c) 2012, 2018, 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
27 #include "memory/metadataFactory.hpp"
28 #include "memory/metaspaceShared.hpp"
29 #include "memory/universe.hpp"
30 #include "oops/oop.inline.hpp"
31
32 #include "classfile/symbolTable.hpp"
33 #include "classfile/classLoaderData.hpp"
34
35 #include "prims/whitebox.hpp"
36 #include "prims/wbtestmethods/parserTests.hpp"
37
38 #include "runtime/arguments.hpp"
39 #include "runtime/interfaceSupport.hpp"
40 #include "runtime/os.hpp"
41 #include "utilities/array.hpp"
42 #include "utilities/debug.hpp"
43 #include "utilities/macros.hpp"
44 #include "utilities/exceptions.hpp"
45
46 #if INCLUDE_ALL_GCS
47 #include "gc_implementation/parallelScavenge/parallelScavengeHeap.inline.hpp"
48 #include "gc_implementation/g1/concurrentMark.hpp"
49 #include "gc_implementation/g1/concurrentMarkThread.hpp"
50 #include "gc_implementation/g1/g1CollectedHeap.inline.hpp"
51 #include "gc_implementation/g1/heapRegionRemSet.hpp"
52 #endif // INCLUDE_ALL_GCS
53
54 #if INCLUDE_NMT
55 #include "services/mallocSiteTable.hpp"
56 #include "services/memTracker.hpp"
57 #include "utilities/nativeCallStack.hpp"
58 #endif // INCLUDE_NMT
59
60 #include "compiler/compileBroker.hpp"
61 #include "jvmtifiles/jvmtiEnv.hpp"
62 #include "runtime/compilationPolicy.hpp"
63
64 PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC
65
66 #define SIZE_T_MAX_VALUE ((size_t) -1)
67
68 bool WhiteBox::_used = false;
69
70 WB_ENTRY(jlong, WB_GetObjectAddress(JNIEnv* env, jobject o, jobject obj))
71 return (jlong)(void*)JNIHandles::resolve(obj);
72 WB_END
73
74 WB_ENTRY(jint, WB_GetHeapOopSize(JNIEnv* env, jobject o))
75 return heapOopSize;
76 WB_END
77
78 WB_ENTRY(jint, WB_GetVMPageSize(JNIEnv* env, jobject o))
79 return os::vm_page_size();
80 WB_END
81
82 WB_ENTRY(jlong, WB_GetVMLargePageSize(JNIEnv* env, jobject o))
83 return os::large_page_size();
84 WB_END
85
86 class WBIsKlassAliveClosure : public KlassClosure {
87 Symbol* _name;
88 bool _found;
89 public:
90 WBIsKlassAliveClosure(Symbol* name) : _name(name), _found(false) {}
91
92 void do_klass(Klass* k) {
93 if (_found) return;
94 Symbol* ksym = k->name();
95 if (ksym->fast_compare(_name) == 0) {
96 _found = true;
97 }
98 }
99
100 bool found() const {
101 return _found;
102 }
103 };
104
105 WB_ENTRY(jboolean, WB_IsClassAlive(JNIEnv* env, jobject target, jstring name))
106 Handle h_name = JNIHandles::resolve(name);
107 if (h_name.is_null()) return false;
108 Symbol* sym = java_lang_String::as_symbol(h_name, CHECK_false);
109 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return
110
111 WBIsKlassAliveClosure closure(sym);
112 ClassLoaderDataGraph::classes_do(&closure);
113
114 return closure.found();
115 WB_END
116
117 WB_ENTRY(jboolean, WB_ClassKnownToNotExist(JNIEnv* env, jobject o, jobject loader, jstring name))
118 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
119 const char* class_name = env->GetStringUTFChars(name, NULL);
120 jboolean result = JVM_KnownToNotExist(env, loader, class_name);
121 env->ReleaseStringUTFChars(name, class_name);
122 return result;
123 WB_END
124
125 WB_ENTRY(jobjectArray, WB_GetLookupCacheURLs(JNIEnv* env, jobject o, jobject loader))
126 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
127 return JVM_GetResourceLookupCacheURLs(env, loader);
128 WB_END
129
130 WB_ENTRY(jintArray, WB_GetLookupCacheMatches(JNIEnv* env, jobject o, jobject loader, jstring name))
131 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
132 const char* resource_name = env->GetStringUTFChars(name, NULL);
133 jintArray result = JVM_GetResourceLookupCache(env, loader, resource_name);
134
135 env->ReleaseStringUTFChars(name, resource_name);
136 return result;
137 WB_END
138
139 WB_ENTRY(void, WB_AddToBootstrapClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) {
140 #if INCLUDE_JVMTI
141 ResourceMark rm;
142 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment));
143 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION);
144 jvmtiError err = jvmti_env->AddToBootstrapClassLoaderSearch(seg);
145 assert(err == JVMTI_ERROR_NONE, "must not fail");
146 #endif
147 }
148 WB_END
149
150 WB_ENTRY(void, WB_AddToSystemClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) {
151 #if INCLUDE_JVMTI
152 ResourceMark rm;
153 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment));
154 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION);
155 jvmtiError err = jvmti_env->AddToSystemClassLoaderSearch(seg);
156 assert(err == JVMTI_ERROR_NONE, "must not fail");
157 #endif
158 }
159 WB_END
160
161 #ifdef LINUX
162 #include "utilities/elfFile.hpp"
163 #include "osContainer_linux.hpp"
164 #endif
165
166 WB_ENTRY(jlong, WB_GetCompressedOopsMaxHeapSize(JNIEnv* env, jobject o)) {
167 return (jlong)Arguments::max_heap_for_compressed_oops();
168 }
169 WB_END
170
171 WB_ENTRY(void, WB_PrintHeapSizes(JNIEnv* env, jobject o)) {
172 CollectorPolicy * p = Universe::heap()->collector_policy();
173 gclog_or_tty->print_cr("Minimum heap " SIZE_FORMAT " Initial heap "
174 SIZE_FORMAT" Maximum heap " SIZE_FORMAT " Min alignment " SIZE_FORMAT " Max alignment " SIZE_FORMAT,
175 p->min_heap_byte_size(), p->initial_heap_byte_size(), p->max_heap_byte_size(),
176 p->space_alignment(), p->heap_alignment());
177 }
178 WB_END
179
180 #ifndef PRODUCT
181 // Forward declaration
182 void TestReservedSpace_test();
183 void TestReserveMemorySpecial_test();
184 void TestVirtualSpace_test();
185 void TestMetaspaceAux_test();
186 #endif
187
188 WB_ENTRY(void, WB_RunMemoryUnitTests(JNIEnv* env, jobject o))
189 #ifndef PRODUCT
190 TestReservedSpace_test();
191 TestReserveMemorySpecial_test();
192 TestVirtualSpace_test();
193 TestMetaspaceAux_test();
194 #endif
195 WB_END
196
197 WB_ENTRY(void, WB_ReadFromNoaccessArea(JNIEnv* env, jobject o))
198 size_t granularity = os::vm_allocation_granularity();
199 ReservedHeapSpace rhs(100 * granularity, granularity, false, NULL);
200 VirtualSpace vs;
201 vs.initialize(rhs, 50 * granularity);
202
203 //Check if constraints are complied
204 if (!( UseCompressedOops && rhs.base() != NULL &&
205 Universe::narrow_oop_base() != NULL &&
206 Universe::narrow_oop_use_implicit_null_checks() )) {
207 tty->print_cr("WB_ReadFromNoaccessArea method is useless:\n "
208 "\tUseCompressedOops is %d\n"
209 "\trhs.base() is " PTR_FORMAT "\n"
210 "\tUniverse::narrow_oop_base() is " PTR_FORMAT "\n"
211 "\tUniverse::narrow_oop_use_implicit_null_checks() is %d",
212 UseCompressedOops,
213 rhs.base(),
214 Universe::narrow_oop_base(),
215 Universe::narrow_oop_use_implicit_null_checks());
216 return;
217 }
218 tty->print_cr("Reading from no access area... ");
219 tty->print_cr("*(vs.low_boundary() - rhs.noaccess_prefix() / 2 ) = %c",
220 *(vs.low_boundary() - rhs.noaccess_prefix() / 2 ));
221 WB_END
222
223 static jint wb_stress_virtual_space_resize(size_t reserved_space_size,
224 size_t magnitude, size_t iterations) {
225 size_t granularity = os::vm_allocation_granularity();
226 ReservedHeapSpace rhs(reserved_space_size * granularity, granularity, false, NULL);
227 VirtualSpace vs;
228 if (!vs.initialize(rhs, 0)) {
229 tty->print_cr("Failed to initialize VirtualSpace. Can't proceed.");
230 return 3;
231 }
232
233 long seed = os::random();
234 tty->print_cr("Random seed is %ld", seed);
235 os::init_random(seed);
236
237 for (size_t i = 0; i < iterations; i++) {
238
239 // Whether we will shrink or grow
240 bool shrink = os::random() % 2L == 0;
241
242 // Get random delta to resize virtual space
243 size_t delta = (size_t)os::random() % magnitude;
244
245 // If we are about to shrink virtual space below zero, then expand instead
246 if (shrink && vs.committed_size() < delta) {
247 shrink = false;
248 }
249
250 // Resizing by delta
251 if (shrink) {
252 vs.shrink_by(delta);
253 } else {
254 // If expanding fails expand_by will silently return false
255 vs.expand_by(delta, true);
256 }
257 }
258 return 0;
259 }
260
261 WB_ENTRY(jint, WB_StressVirtualSpaceResize(JNIEnv* env, jobject o,
262 jlong reserved_space_size, jlong magnitude, jlong iterations))
263 tty->print_cr("reservedSpaceSize=" JLONG_FORMAT ", magnitude=" JLONG_FORMAT ", "
264 "iterations=" JLONG_FORMAT "\n", reserved_space_size, magnitude,
265 iterations);
266 if (reserved_space_size < 0 || magnitude < 0 || iterations < 0) {
267 tty->print_cr("One of variables printed above is negative. Can't proceed.\n");
268 return 1;
269 }
270
271 // sizeof(size_t) depends on whether OS is 32bit or 64bit. sizeof(jlong) is
272 // always 8 byte. That's why we should avoid overflow in case of 32bit platform.
273 if (sizeof(size_t) < sizeof(jlong)) {
274 jlong size_t_max_value = (jlong) SIZE_T_MAX_VALUE;
275 if (reserved_space_size > size_t_max_value || magnitude > size_t_max_value
276 || iterations > size_t_max_value) {
277 tty->print_cr("One of variables printed above overflows size_t. Can't proceed.\n");
278 return 2;
279 }
280 }
281
282 return wb_stress_virtual_space_resize((size_t) reserved_space_size,
283 (size_t) magnitude, (size_t) iterations);
284 WB_END
285
286 WB_ENTRY(jboolean, WB_isObjectInOldGen(JNIEnv* env, jobject o, jobject obj))
287 oop p = JNIHandles::resolve(obj);
288 #if INCLUDE_ALL_GCS
289 if (UseG1GC) {
290 G1CollectedHeap* g1 = G1CollectedHeap::heap();
291 const HeapRegion* hr = g1->heap_region_containing(p);
292 if (hr == NULL) {
293 return false;
294 }
295 return !(hr->is_young());
296 } else if (UseParallelGC) {
297 ParallelScavengeHeap* psh = ParallelScavengeHeap::heap();
298 return !psh->is_in_young(p);
299 }
300 #endif // INCLUDE_ALL_GCS
301 GenCollectedHeap* gch = GenCollectedHeap::heap();
302 return !gch->is_in_young(p);
303 WB_END
304
305 WB_ENTRY(jlong, WB_GetObjectSize(JNIEnv* env, jobject o, jobject obj))
306 oop p = JNIHandles::resolve(obj);
307 return p->size() * HeapWordSize;
308 WB_END
309
310 #if INCLUDE_ALL_GCS
311 WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj))
312 G1CollectedHeap* g1 = G1CollectedHeap::heap();
313 oop result = JNIHandles::resolve(obj);
314 const HeapRegion* hr = g1->heap_region_containing(result);
315 return hr->isHumongous();
316 WB_END
317
318 WB_ENTRY(jlong, WB_G1NumMaxRegions(JNIEnv* env, jobject o))
319 G1CollectedHeap* g1 = G1CollectedHeap::heap();
320 size_t nr = g1->max_regions();
321 return (jlong)nr;
322 WB_END
323
324 WB_ENTRY(jlong, WB_G1NumFreeRegions(JNIEnv* env, jobject o))
325 G1CollectedHeap* g1 = G1CollectedHeap::heap();
326 size_t nr = g1->num_free_regions();
327 return (jlong)nr;
328 WB_END
329
330 WB_ENTRY(jboolean, WB_G1InConcurrentMark(JNIEnv* env, jobject o))
331 G1CollectedHeap* g1 = G1CollectedHeap::heap();
332 return g1->concurrent_mark()->cmThread()->during_cycle();
333 WB_END
334
335 WB_ENTRY(jboolean, WB_G1StartMarkCycle(JNIEnv* env, jobject o))
336 G1CollectedHeap* g1h = G1CollectedHeap::heap();
337 if (!g1h->concurrent_mark()->cmThread()->during_cycle()) {
338 g1h->collect(GCCause::_wb_conc_mark);
339 return true;
340 }
341 return false;
342 WB_END
343
344 WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o))
345 return (jint)HeapRegion::GrainBytes;
346 WB_END
347
348 WB_ENTRY(jobject, WB_G1AuxiliaryMemoryUsage(JNIEnv* env))
349 ResourceMark rm(THREAD);
350 G1CollectedHeap* g1h = G1CollectedHeap::heap();
351 MemoryUsage usage = g1h->get_auxiliary_data_memory_usage();
352 Handle h = MemoryService::create_MemoryUsage_obj(usage, CHECK_NULL);
353 return JNIHandles::make_local(env, h());
354 WB_END
355 #endif // INCLUDE_ALL_GCS
356
357 #if INCLUDE_NMT
358 // Alloc memory using the test memory type so that we can use that to see if
359 // NMT picks it up correctly
360 WB_ENTRY(jlong, WB_NMTMalloc(JNIEnv* env, jobject o, jlong size))
361 jlong addr = 0;
362 addr = (jlong)(uintptr_t)os::malloc(size, mtTest);
363 return addr;
364 WB_END
365
366 // Alloc memory with pseudo call stack. The test can create psudo malloc
367 // allocation site to stress the malloc tracking.
368 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStack(JNIEnv* env, jobject o, jlong size, jint pseudo_stack))
369 address pc = (address)(size_t)pseudo_stack;
370 NativeCallStack stack(&pc, 1);
371 return (jlong)(uintptr_t)os::malloc(size, mtTest, stack);
372 WB_END
373
374 // Free the memory allocated by NMTAllocTest
375 WB_ENTRY(void, WB_NMTFree(JNIEnv* env, jobject o, jlong mem))
376 os::free((void*)(uintptr_t)mem, mtTest);
377 WB_END
378
379 WB_ENTRY(jlong, WB_NMTReserveMemory(JNIEnv* env, jobject o, jlong size))
380 jlong addr = 0;
381
382 addr = (jlong)(uintptr_t)os::reserve_memory(size);
383 MemTracker::record_virtual_memory_type((address)addr, mtTest);
384
385 return addr;
386 WB_END
387
388
389 WB_ENTRY(void, WB_NMTCommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
390 os::commit_memory((char *)(uintptr_t)addr, size, !ExecMem);
391 MemTracker::record_virtual_memory_type((address)(uintptr_t)addr, mtTest);
392 WB_END
393
394 WB_ENTRY(void, WB_NMTUncommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
395 os::uncommit_memory((char *)(uintptr_t)addr, size);
396 WB_END
397
398 WB_ENTRY(void, WB_NMTReleaseMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
399 os::release_memory((char *)(uintptr_t)addr, size);
400 WB_END
401
402 WB_ENTRY(jboolean, WB_NMTIsDetailSupported(JNIEnv* env))
403 return MemTracker::tracking_level() == NMT_detail;
404 WB_END
405
406 WB_ENTRY(jboolean, WB_NMTChangeTrackingLevel(JNIEnv* env))
407 // Test that we can downgrade NMT levels but not upgrade them.
408 if (MemTracker::tracking_level() == NMT_off) {
409 MemTracker::transition_to(NMT_off);
410 return MemTracker::tracking_level() == NMT_off;
411 } else {
412 assert(MemTracker::tracking_level() == NMT_detail, "Should start out as detail tracking");
413 MemTracker::transition_to(NMT_summary);
414 assert(MemTracker::tracking_level() == NMT_summary, "Should be summary now");
415
416 // Can't go to detail once NMT is set to summary.
417 MemTracker::transition_to(NMT_detail);
418 assert(MemTracker::tracking_level() == NMT_summary, "Should still be summary now");
419
420 // Shutdown sets tracking level to minimal.
421 MemTracker::shutdown();
422 assert(MemTracker::tracking_level() == NMT_minimal, "Should be minimal now");
423
424 // Once the tracking level is minimal, we cannot increase to summary.
425 // The code ignores this request instead of asserting because if the malloc site
426 // table overflows in another thread, it tries to change the code to summary.
427 MemTracker::transition_to(NMT_summary);
428 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now");
429
430 // Really can never go up to detail, verify that the code would never do this.
431 MemTracker::transition_to(NMT_detail);
432 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now");
433 return MemTracker::tracking_level() == NMT_minimal;
434 }
435 WB_END
436
437 WB_ENTRY(jint, WB_NMTGetHashSize(JNIEnv* env, jobject o))
438 int hash_size = MallocSiteTable::hash_buckets();
439 assert(hash_size > 0, "NMT hash_size should be > 0");
440 return (jint)hash_size;
441 WB_END
442 #endif // INCLUDE_NMT
443
444 static jmethodID reflected_method_to_jmid(JavaThread* thread, JNIEnv* env, jobject method) {
445 assert(method != NULL, "method should not be null");
446 ThreadToNativeFromVM ttn(thread);
447 return env->FromReflectedMethod(method);
448 }
449
450 WB_ENTRY(void, WB_DeoptimizeAll(JNIEnv* env, jobject o))
451 MutexLockerEx mu(Compile_lock);
452 CodeCache::mark_all_nmethods_for_deoptimization();
453 VM_Deoptimize op;
454 VMThread::execute(&op);
455 WB_END
456
457 WB_ENTRY(jint, WB_DeoptimizeMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
458 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
459 int result = 0;
460 CHECK_JNI_EXCEPTION_(env, result);
461 MutexLockerEx mu(Compile_lock);
462 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
463 if (is_osr) {
464 result += mh->mark_osr_nmethods();
465 } else if (mh->code() != NULL) {
466 mh->code()->mark_for_deoptimization();
467 ++result;
468 }
469 result += CodeCache::mark_for_deoptimization(mh());
470 if (result > 0) {
471 VM_Deoptimize op;
472 VMThread::execute(&op);
473 }
474 return result;
475 WB_END
476
477 WB_ENTRY(jboolean, WB_IsMethodCompiled(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
478 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
479 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
480 MutexLockerEx mu(Compile_lock);
481 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
482 nmethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
483 if (code == NULL) {
484 return JNI_FALSE;
485 }
486 return (code->is_alive() && !code->is_marked_for_deoptimization());
487 WB_END
488
489 WB_ENTRY(jboolean, WB_IsMethodCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
490 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
491 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
492 MutexLockerEx mu(Compile_lock);
493 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
494 if (is_osr) {
495 return CompilationPolicy::can_be_osr_compiled(mh, comp_level);
496 } else {
497 return CompilationPolicy::can_be_compiled(mh, comp_level);
498 }
499 WB_END
500
501 WB_ENTRY(jboolean, WB_IsMethodQueuedForCompilation(JNIEnv* env, jobject o, jobject method))
502 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
503 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
504 MutexLockerEx mu(Compile_lock);
505 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
506 return mh->queued_for_compilation();
507 WB_END
508
509 WB_ENTRY(jint, WB_GetMethodCompilationLevel(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
510 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
511 CHECK_JNI_EXCEPTION_(env, CompLevel_none);
512 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
513 nmethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
514 return (code != NULL ? code->comp_level() : CompLevel_none);
515 WB_END
516
517 WB_ENTRY(void, WB_MakeMethodNotCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
518 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
519 CHECK_JNI_EXCEPTION(env);
520 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
521 if (is_osr) {
522 mh->set_not_osr_compilable(comp_level, true /* report */, "WhiteBox");
523 } else {
524 mh->set_not_compilable(comp_level, true /* report */, "WhiteBox");
525 }
526 WB_END
527
528 WB_ENTRY(jint, WB_GetMethodEntryBci(JNIEnv* env, jobject o, jobject method))
529 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
530 CHECK_JNI_EXCEPTION_(env, InvocationEntryBci);
531 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
532 nmethod* code = mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false);
533 return (code != NULL && code->is_osr_method() ? code->osr_entry_bci() : InvocationEntryBci);
534 WB_END
535
536 WB_ENTRY(jboolean, WB_TestSetDontInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
537 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
538 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
539 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
540 bool result = mh->dont_inline();
541 mh->set_dont_inline(value == JNI_TRUE);
542 return result;
543 WB_END
544
545 WB_ENTRY(jint, WB_GetCompileQueueSize(JNIEnv* env, jobject o, jint comp_level))
546 if (comp_level == CompLevel_any) {
547 return CompileBroker::queue_size(CompLevel_full_optimization) /* C2 */ +
548 CompileBroker::queue_size(CompLevel_full_profile) /* C1 */;
549 } else {
550 return CompileBroker::queue_size(comp_level);
551 }
552 WB_END
553
554 WB_ENTRY(jboolean, WB_TestSetForceInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
555 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
556 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
557 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
558 bool result = mh->force_inline();
559 mh->set_force_inline(value == JNI_TRUE);
560 return result;
561 WB_END
562
563 WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level, jint bci))
564 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
565 CHECK_JNI_EXCEPTION_(env, JNI_FALSE);
566 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
567 nmethod* nm = CompileBroker::compile_method(mh, bci, comp_level, mh, mh->invocation_count(), "WhiteBox", THREAD);
568 MutexLockerEx mu(Compile_lock);
569 return (mh->queued_for_compilation() || nm != NULL);
570 WB_END
571
572 class VM_WhiteBoxOperation : public VM_Operation {
573 public:
574 VM_WhiteBoxOperation() { }
575 VMOp_Type type() const { return VMOp_WhiteBoxOperation; }
576 bool allow_nested_vm_operations() const { return true; }
577 };
578
579 class AlwaysFalseClosure : public BoolObjectClosure {
580 public:
581 bool do_object_b(oop p) { return false; }
582 };
583
584 static AlwaysFalseClosure always_false;
585
586 class VM_WhiteBoxCleanMethodData : public VM_WhiteBoxOperation {
587 public:
588 VM_WhiteBoxCleanMethodData(MethodData* mdo) : _mdo(mdo) { }
589 void doit() {
590 _mdo->clean_method_data(&always_false);
591 }
592 private:
593 MethodData* _mdo;
594 };
595
596 WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method))
597 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
598 CHECK_JNI_EXCEPTION(env);
599 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
600 MutexLockerEx mu(Compile_lock);
601 MethodData* mdo = mh->method_data();
602 MethodCounters* mcs = mh->method_counters();
603
604 if (mdo != NULL) {
605 mdo->init();
606 ResourceMark rm;
607 int arg_count = mdo->method()->size_of_parameters();
608 for (int i = 0; i < arg_count; i++) {
609 mdo->set_arg_modified(i, 0);
610 }
611 VM_WhiteBoxCleanMethodData op(mdo);
612 VMThread::execute(&op);
613 }
614
615 mh->clear_not_c1_compilable();
616 mh->clear_not_c2_compilable();
617 mh->clear_not_c2_osr_compilable();
618 NOT_PRODUCT(mh->set_compiled_invocation_count(0));
619 if (mcs != NULL) {
620 mcs->backedge_counter()->init();
621 mcs->invocation_counter()->init();
622 mcs->set_interpreter_invocation_count(0);
623 mcs->set_interpreter_throwout_count(0);
624
625 #ifdef TIERED
626 mcs->set_rate(0.0F);
627 mh->set_prev_event_count(0);
628 mh->set_prev_time(0);
629 #endif
630 }
631 WB_END
632
633 template <typename T>
634 static bool GetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, bool (*TAt)(const char*, T*)) {
635 if (name == NULL) {
636 return false;
637 }
638 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
639 const char* flag_name = env->GetStringUTFChars(name, NULL);
640 bool result = (*TAt)(flag_name, value);
641 env->ReleaseStringUTFChars(name, flag_name);
642 return result;
643 }
644
645 template <typename T>
646 static bool SetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, bool (*TAtPut)(const char*, T*, Flag::Flags)) {
647 if (name == NULL) {
648 return false;
649 }
650 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
651 const char* flag_name = env->GetStringUTFChars(name, NULL);
652 bool result = (*TAtPut)(flag_name, value, Flag::INTERNAL);
653 env->ReleaseStringUTFChars(name, flag_name);
654 return result;
655 }
656
657 template <typename T>
658 static jobject box(JavaThread* thread, JNIEnv* env, Symbol* name, Symbol* sig, T value) {
659 ResourceMark rm(thread);
660 jclass clazz = env->FindClass(name->as_C_string());
661 CHECK_JNI_EXCEPTION_(env, NULL);
662 jmethodID methodID = env->GetStaticMethodID(clazz,
663 vmSymbols::valueOf_name()->as_C_string(),
664 sig->as_C_string());
665 CHECK_JNI_EXCEPTION_(env, NULL);
666 jobject result = env->CallStaticObjectMethod(clazz, methodID, value);
667 CHECK_JNI_EXCEPTION_(env, NULL);
668 return result;
669 }
670
671 static jobject booleanBox(JavaThread* thread, JNIEnv* env, jboolean value) {
672 return box(thread, env, vmSymbols::java_lang_Boolean(), vmSymbols::Boolean_valueOf_signature(), value);
673 }
674 static jobject integerBox(JavaThread* thread, JNIEnv* env, jint value) {
675 return box(thread, env, vmSymbols::java_lang_Integer(), vmSymbols::Integer_valueOf_signature(), value);
676 }
677 static jobject longBox(JavaThread* thread, JNIEnv* env, jlong value) {
678 return box(thread, env, vmSymbols::java_lang_Long(), vmSymbols::Long_valueOf_signature(), value);
679 }
680 /* static jobject floatBox(JavaThread* thread, JNIEnv* env, jfloat value) {
681 return box(thread, env, vmSymbols::java_lang_Float(), vmSymbols::Float_valueOf_signature(), value);
682 }*/
683 static jobject doubleBox(JavaThread* thread, JNIEnv* env, jdouble value) {
684 return box(thread, env, vmSymbols::java_lang_Double(), vmSymbols::Double_valueOf_signature(), value);
685 }
686
687 WB_ENTRY(jobject, WB_GetBooleanVMFlag(JNIEnv* env, jobject o, jstring name))
688 bool result;
689 if (GetVMFlag <bool> (thread, env, name, &result, &CommandLineFlags::boolAt)) {
690 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
691 return booleanBox(thread, env, result);
692 }
693 return NULL;
694 WB_END
695
696 WB_ENTRY(jobject, WB_GetIntxVMFlag(JNIEnv* env, jobject o, jstring name))
697 intx result;
698 if (GetVMFlag <intx> (thread, env, name, &result, &CommandLineFlags::intxAt)) {
699 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
700 return longBox(thread, env, result);
701 }
702 return NULL;
703 WB_END
704
705 WB_ENTRY(jobject, WB_GetUintxVMFlag(JNIEnv* env, jobject o, jstring name))
706 uintx result;
707 if (GetVMFlag <uintx> (thread, env, name, &result, &CommandLineFlags::uintxAt)) {
708 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
709 return longBox(thread, env, result);
710 }
711 return NULL;
712 WB_END
713
714 WB_ENTRY(jobject, WB_GetUint64VMFlag(JNIEnv* env, jobject o, jstring name))
715 uint64_t result;
716 if (GetVMFlag <uint64_t> (thread, env, name, &result, &CommandLineFlags::uint64_tAt)) {
717 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
718 return longBox(thread, env, result);
719 }
720 return NULL;
721 WB_END
722
723 WB_ENTRY(jobject, WB_GetDoubleVMFlag(JNIEnv* env, jobject o, jstring name))
724 double result;
725 if (GetVMFlag <double> (thread, env, name, &result, &CommandLineFlags::doubleAt)) {
726 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
727 return doubleBox(thread, env, result);
728 }
729 return NULL;
730 WB_END
731
732 WB_ENTRY(jstring, WB_GetStringVMFlag(JNIEnv* env, jobject o, jstring name))
733 ccstr ccstrResult;
734 if (GetVMFlag <ccstr> (thread, env, name, &ccstrResult, &CommandLineFlags::ccstrAt)) {
735 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
736 jstring result = env->NewStringUTF(ccstrResult);
737 CHECK_JNI_EXCEPTION_(env, NULL);
738 return result;
739 }
740 return NULL;
741 WB_END
742
743 WB_ENTRY(void, WB_SetBooleanVMFlag(JNIEnv* env, jobject o, jstring name, jboolean value))
744 bool result = value == JNI_TRUE ? true : false;
745 SetVMFlag <bool> (thread, env, name, &result, &CommandLineFlags::boolAtPut);
746 WB_END
747
748 WB_ENTRY(void, WB_SetIntxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
749 intx result = value;
750 SetVMFlag <intx> (thread, env, name, &result, &CommandLineFlags::intxAtPut);
751 WB_END
752
753 WB_ENTRY(void, WB_SetUintxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
754 uintx result = value;
755 SetVMFlag <uintx> (thread, env, name, &result, &CommandLineFlags::uintxAtPut);
756 WB_END
757
758 WB_ENTRY(void, WB_SetUint64VMFlag(JNIEnv* env, jobject o, jstring name, jlong value))
759 uint64_t result = value;
760 SetVMFlag <uint64_t> (thread, env, name, &result, &CommandLineFlags::uint64_tAtPut);
761 WB_END
762
763 WB_ENTRY(void, WB_SetDoubleVMFlag(JNIEnv* env, jobject o, jstring name, jdouble value))
764 double result = value;
765 SetVMFlag <double> (thread, env, name, &result, &CommandLineFlags::doubleAtPut);
766 WB_END
767
768 WB_ENTRY(void, WB_SetStringVMFlag(JNIEnv* env, jobject o, jstring name, jstring value))
769 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
770 const char* ccstrValue = (value == NULL) ? NULL : env->GetStringUTFChars(value, NULL);
771 ccstr ccstrResult = ccstrValue;
772 bool needFree;
773 {
774 ThreadInVMfromNative ttvfn(thread); // back to VM
775 needFree = SetVMFlag <ccstr> (thread, env, name, &ccstrResult, &CommandLineFlags::ccstrAtPut);
776 }
777 if (value != NULL) {
778 env->ReleaseStringUTFChars(value, ccstrValue);
779 }
780 if (needFree) {
781 FREE_C_HEAP_ARRAY(char, ccstrResult, mtInternal);
782 }
783 WB_END
784
785
786 WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString))
787 ResourceMark rm(THREAD);
788 int len;
789 jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len, CHECK_false);
790 return (StringTable::lookup(name, len) != NULL);
791 WB_END
792
793 WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o))
794 Universe::heap()->collector_policy()->set_should_clear_all_soft_refs(true);
795 Universe::heap()->collect(GCCause::_last_ditch_collection);
796 #if INCLUDE_ALL_GCS
797 if (UseG1GC) {
798 // Needs to be cleared explicitly for G1
799 Universe::heap()->collector_policy()->set_should_clear_all_soft_refs(false);
800 }
801 #endif // INCLUDE_ALL_GCS
802 WB_END
803
804 WB_ENTRY(void, WB_YoungGC(JNIEnv* env, jobject o))
805 Universe::heap()->collect(GCCause::_wb_young_gc);
806 WB_END
807
808 WB_ENTRY(void, WB_ReadReservedMemory(JNIEnv* env, jobject o))
809 // static+volatile in order to force the read to happen
810 // (not be eliminated by the compiler)
811 static char c;
812 static volatile char* p;
813
814 p = os::reserve_memory(os::vm_allocation_granularity(), NULL, 0);
815 if (p == NULL) {
816 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), "Failed to reserve memory");
817 }
818
819 c = *p;
820 WB_END
821
822 WB_ENTRY(jstring, WB_GetCPUFeatures(JNIEnv* env, jobject o))
823 const char* cpu_features = VM_Version::cpu_features();
824 ThreadToNativeFromVM ttn(thread);
825 jstring features_string = env->NewStringUTF(cpu_features);
826
827 CHECK_JNI_EXCEPTION_(env, NULL);
828
829 return features_string;
830 WB_END
831
832
833 WB_ENTRY(jobjectArray, WB_GetNMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
834 ResourceMark rm(THREAD);
835 jmethodID jmid = reflected_method_to_jmid(thread, env, method);
836 CHECK_JNI_EXCEPTION_(env, NULL);
837 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
838 nmethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
839 jobjectArray result = NULL;
840 if (code == NULL) {
841 return result;
842 }
843 int insts_size = code->insts_size();
844
845 ThreadToNativeFromVM ttn(thread);
846 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string());
847 CHECK_JNI_EXCEPTION_(env, NULL);
848 result = env->NewObjectArray(2, clazz, NULL);
849 if (result == NULL) {
850 return result;
851 }
852
853 jobject obj = integerBox(thread, env, code->comp_level());
854 CHECK_JNI_EXCEPTION_(env, NULL);
855 env->SetObjectArrayElement(result, 0, obj);
856
857 jbyteArray insts = env->NewByteArray(insts_size);
858 CHECK_JNI_EXCEPTION_(env, NULL);
859 env->SetByteArrayRegion(insts, 0, insts_size, (jbyte*) code->insts_begin());
860 env->SetObjectArrayElement(result, 1, insts);
861
862 return result;
863 WB_END
864
865
866 int WhiteBox::array_bytes_to_length(size_t bytes) {
867 return Array<u1>::bytes_to_length(bytes);
868 }
869
870 WB_ENTRY(jlong, WB_AllocateMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong size))
871 if (size < 0) {
872 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
873 err_msg("WB_AllocateMetaspace: size is negative: " JLONG_FORMAT, size));
874 }
875
876 oop class_loader_oop = JNIHandles::resolve(class_loader);
877 ClassLoaderData* cld = class_loader_oop != NULL
878 ? java_lang_ClassLoader::loader_data(class_loader_oop)
879 : ClassLoaderData::the_null_class_loader_data();
880
881 void* metadata = MetadataFactory::new_writeable_array<u1>(cld, WhiteBox::array_bytes_to_length((size_t)size), thread);
882
883 return (jlong)(uintptr_t)metadata;
884 WB_END
885
886 WB_ENTRY(void, WB_FreeMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong addr, jlong size))
887 oop class_loader_oop = JNIHandles::resolve(class_loader);
888 ClassLoaderData* cld = class_loader_oop != NULL
889 ? java_lang_ClassLoader::loader_data(class_loader_oop)
890 : ClassLoaderData::the_null_class_loader_data();
891
892 MetadataFactory::free_array(cld, (Array<u1>*)(uintptr_t)addr);
893 WB_END
894
895 WB_ENTRY(jlong, WB_IncMetaspaceCapacityUntilGC(JNIEnv* env, jobject wb, jlong inc))
896 if (inc < 0) {
897 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
898 err_msg("WB_IncMetaspaceCapacityUntilGC: inc is negative: " JLONG_FORMAT, inc));
899 }
900
901 jlong max_size_t = (jlong) ((size_t) -1);
902 if (inc > max_size_t) {
903 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
904 err_msg("WB_IncMetaspaceCapacityUntilGC: inc does not fit in size_t: " JLONG_FORMAT, inc));
905 }
906
907 size_t new_cap_until_GC = 0;
908 size_t aligned_inc = align_size_down((size_t) inc, Metaspace::commit_alignment());
909 bool success = MetaspaceGC::inc_capacity_until_GC(aligned_inc, &new_cap_until_GC);
910 if (!success) {
911 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(),
912 "WB_IncMetaspaceCapacityUntilGC: could not increase capacity until GC "
913 "due to contention with another thread");
914 }
915 return (jlong) new_cap_until_GC;
916 WB_END
917
918 WB_ENTRY(jlong, WB_MetaspaceCapacityUntilGC(JNIEnv* env, jobject wb))
919 return (jlong) MetaspaceGC::capacity_until_GC();
920 WB_END
921
922 WB_ENTRY(jboolean, WB_IsSharedClass(JNIEnv* env, jobject wb, jclass clazz))
923 return (jboolean)MetaspaceShared::is_in_shared_space(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(clazz)));
924 WB_END
925
926 WB_ENTRY(jboolean, WB_IsMonitorInflated(JNIEnv* env, jobject wb, jobject obj))
927 oop obj_oop = JNIHandles::resolve(obj);
928 return (jboolean) obj_oop->mark()->has_monitor();
929 WB_END
930
931 WB_ENTRY(void, WB_ForceSafepoint(JNIEnv* env, jobject wb))
932 VM_ForceSafepoint force_safepoint_op;
933 VMThread::execute(&force_safepoint_op);
934 WB_END
935
936 //Some convenience methods to deal with objects from java
937 int WhiteBox::offset_for_field(const char* field_name, oop object,
938 Symbol* signature_symbol) {
939 assert(field_name != NULL && strlen(field_name) > 0, "Field name not valid");
940 Thread* THREAD = Thread::current();
941
942 //Get the class of our object
943 Klass* arg_klass = object->klass();
944 //Turn it into an instance-klass
945 InstanceKlass* ik = InstanceKlass::cast(arg_klass);
946
947 //Create symbols to look for in the class
948 TempNewSymbol name_symbol = SymbolTable::lookup(field_name, (int) strlen(field_name),
949 THREAD);
950
951 //To be filled in with an offset of the field we're looking for
952 fieldDescriptor fd;
953
954 Klass* res = ik->find_field(name_symbol, signature_symbol, &fd);
955 if (res == NULL) {
956 tty->print_cr("Invalid layout of %s at %s", ik->external_name(),
957 name_symbol->as_C_string());
958 vm_exit_during_initialization("Invalid layout of preloaded class: use -XX:+TraceClassLoading to see the origin of the problem class");
959 }
960
961 //fetch the field at the offset we've found
962 int dest_offset = fd.offset();
963
964 return dest_offset;
965 }
966
967
968 const char* WhiteBox::lookup_jstring(const char* field_name, oop object) {
969 int offset = offset_for_field(field_name, object,
970 vmSymbols::string_signature());
971 oop string = object->obj_field(offset);
972 if (string == NULL) {
973 return NULL;
974 }
975 const char* ret = java_lang_String::as_utf8_string(string);
976 return ret;
977 }
978
979 bool WhiteBox::lookup_bool(const char* field_name, oop object) {
980 int offset =
981 offset_for_field(field_name, object, vmSymbols::bool_signature());
982 bool ret = (object->bool_field(offset) == JNI_TRUE);
983 return ret;
984 }
985
986 void WhiteBox::register_methods(JNIEnv* env, jclass wbclass, JavaThread* thread, JNINativeMethod* method_array, int method_count) {
987 ResourceMark rm;
988 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
989
990 // one by one registration natives for exception catching
991 jclass no_such_method_error_klass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string());
992 CHECK_JNI_EXCEPTION(env);
993 for (int i = 0, n = method_count; i < n; ++i) {
994 // Skip dummy entries
995 if (method_array[i].fnPtr == NULL) continue;
996 if (env->RegisterNatives(wbclass, &method_array[i], 1) != 0) {
997 jthrowable throwable_obj = env->ExceptionOccurred();
998 if (throwable_obj != NULL) {
999 env->ExceptionClear();
1000 if (env->IsInstanceOf(throwable_obj, no_such_method_error_klass)) {
1001 // NoSuchMethodError is thrown when a method can't be found or a method is not native.
1002 // Ignoring the exception since it is not preventing use of other WhiteBox methods.
1003 tty->print_cr("Warning: 'NoSuchMethodError' on register of sun.hotspot.WhiteBox::%s%s",
1004 method_array[i].name, method_array[i].signature);
1005 }
1006 } else {
1007 // Registration failed unexpectedly.
1008 tty->print_cr("Warning: unexpected error on register of sun.hotspot.WhiteBox::%s%s. All methods will be unregistered",
1009 method_array[i].name, method_array[i].signature);
1010 env->UnregisterNatives(wbclass);
1011 break;
1012 }
1013 }
1014 }
1015 }
1016
1017 // Checks that the library libfile has the noexecstack bit set.
1018 WB_ENTRY(jboolean, WB_CheckLibSpecifiesNoexecstack(JNIEnv* env, jobject o, jstring libfile))
1019 jboolean ret = false;
1020 #ifdef LINUX
1021 // Can't be in VM when we call JNI.
1022 ThreadToNativeFromVM ttnfv(thread);
1023 const char* lf = env->GetStringUTFChars(libfile, NULL);
1024 CHECK_JNI_EXCEPTION_(env, 0);
1025 ElfFile ef(lf);
1026 ret = (jboolean) ef.specifies_noexecstack();
1027 env->ReleaseStringUTFChars(libfile, lf);
1028 #endif
1029 return ret;
1030 WB_END
1031
1032 WB_ENTRY(jboolean, WB_IsContainerized(JNIEnv* env, jobject o))
1033 LINUX_ONLY(return OSContainer::is_containerized();)
1034 return false;
1035 WB_END
1036
1037 WB_ENTRY(void, WB_PrintOsInfo(JNIEnv* env, jobject o))
1038 os::print_os_info(tty);
1039 WB_END
1040
1041 #define CC (char*)
1042
1043 static JNINativeMethod methods[] = {
1044 {CC"getObjectAddress", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress },
1045 {CC"getObjectSize", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectSize },
1046 {CC"isObjectInOldGen", CC"(Ljava/lang/Object;)Z", (void*)&WB_isObjectInOldGen },
1047 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize },
1048 {CC"getVMPageSize", CC"()I", (void*)&WB_GetVMPageSize },
1049 {CC"getVMLargePageSize", CC"()J", (void*)&WB_GetVMLargePageSize},
1050 {CC"isClassAlive0", CC"(Ljava/lang/String;)Z", (void*)&WB_IsClassAlive },
1051 {CC"classKnownToNotExist",
1052 CC"(Ljava/lang/ClassLoader;Ljava/lang/String;)Z",(void*)&WB_ClassKnownToNotExist},
1053 {CC"getLookupCacheURLs", CC"(Ljava/lang/ClassLoader;)[Ljava/net/URL;", (void*)&WB_GetLookupCacheURLs},
1054 {CC"getLookupCacheMatches", CC"(Ljava/lang/ClassLoader;Ljava/lang/String;)[I",
1055 (void*)&WB_GetLookupCacheMatches},
1056 {CC"parseCommandLine",
1057 CC"(Ljava/lang/String;[Lsun/hotspot/parser/DiagnosticCommand;)[Ljava/lang/Object;",
1058 (void*) &WB_ParseCommandLine
1059 },
1060 {CC"addToBootstrapClassLoaderSearch", CC"(Ljava/lang/String;)V",
1061 (void*)&WB_AddToBootstrapClassLoaderSearch},
1062 {CC"addToSystemClassLoaderSearch", CC"(Ljava/lang/String;)V",
1063 (void*)&WB_AddToSystemClassLoaderSearch},
1064 {CC"getCompressedOopsMaxHeapSize", CC"()J",
1065 (void*)&WB_GetCompressedOopsMaxHeapSize},
1066 {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes },
1067 {CC"runMemoryUnitTests", CC"()V", (void*)&WB_RunMemoryUnitTests},
1068 {CC"readFromNoaccessArea",CC"()V", (void*)&WB_ReadFromNoaccessArea},
1069 {CC"stressVirtualSpaceResize",CC"(JJJ)I", (void*)&WB_StressVirtualSpaceResize},
1070 {CC"isSharedClass", CC"(Ljava/lang/Class;)Z", (void*)&WB_IsSharedClass },
1071 #if INCLUDE_ALL_GCS
1072 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark},
1073 {CC"g1IsHumongous", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous },
1074 {CC"g1NumMaxRegions", CC"()J", (void*)&WB_G1NumMaxRegions },
1075 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions },
1076 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize },
1077 {CC"g1StartConcMarkCycle", CC"()Z", (void*)&WB_G1StartMarkCycle },
1078 {CC"g1AuxiliaryMemoryUsage", CC"()Ljava/lang/management/MemoryUsage;",
1079 (void*)&WB_G1AuxiliaryMemoryUsage },
1080 #endif // INCLUDE_ALL_GCS
1081 #if INCLUDE_NMT
1082 {CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc },
1083 {CC"NMTMallocWithPseudoStack", CC"(JI)J", (void*)&WB_NMTMallocWithPseudoStack},
1084 {CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree },
1085 {CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory },
1086 {CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory },
1087 {CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory },
1088 {CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory },
1089 {CC"NMTIsDetailSupported",CC"()Z", (void*)&WB_NMTIsDetailSupported},
1090 {CC"NMTChangeTrackingLevel", CC"()Z", (void*)&WB_NMTChangeTrackingLevel},
1091 {CC"NMTGetHashSize", CC"()I", (void*)&WB_NMTGetHashSize },
1092 #endif // INCLUDE_NMT
1093 {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll },
1094 {CC"deoptimizeMethod", CC"(Ljava/lang/reflect/Executable;Z)I",
1095 (void*)&WB_DeoptimizeMethod },
1096 {CC"isMethodCompiled", CC"(Ljava/lang/reflect/Executable;Z)Z",
1097 (void*)&WB_IsMethodCompiled },
1098 {CC"isMethodCompilable", CC"(Ljava/lang/reflect/Executable;IZ)Z",
1099 (void*)&WB_IsMethodCompilable},
1100 {CC"isMethodQueuedForCompilation",
1101 CC"(Ljava/lang/reflect/Executable;)Z", (void*)&WB_IsMethodQueuedForCompilation},
1102 {CC"makeMethodNotCompilable",
1103 CC"(Ljava/lang/reflect/Executable;IZ)V", (void*)&WB_MakeMethodNotCompilable},
1104 {CC"testSetDontInlineMethod",
1105 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetDontInlineMethod},
1106 {CC"getMethodCompilationLevel",
1107 CC"(Ljava/lang/reflect/Executable;Z)I", (void*)&WB_GetMethodCompilationLevel},
1108 {CC"getMethodEntryBci",
1109 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodEntryBci},
1110 {CC"getCompileQueueSize",
1111 CC"(I)I", (void*)&WB_GetCompileQueueSize},
1112 {CC"testSetForceInlineMethod",
1113 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetForceInlineMethod},
1114 {CC"enqueueMethodForCompilation",
1115 CC"(Ljava/lang/reflect/Executable;II)Z", (void*)&WB_EnqueueMethodForCompilation},
1116 {CC"clearMethodState",
1117 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState},
1118 {CC"setBooleanVMFlag", CC"(Ljava/lang/String;Z)V",(void*)&WB_SetBooleanVMFlag},
1119 {CC"setIntxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntxVMFlag},
1120 {CC"setUintxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintxVMFlag},
1121 {CC"setUint64VMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUint64VMFlag},
1122 {CC"setDoubleVMFlag", CC"(Ljava/lang/String;D)V",(void*)&WB_SetDoubleVMFlag},
1123 {CC"setStringVMFlag", CC"(Ljava/lang/String;Ljava/lang/String;)V",
1124 (void*)&WB_SetStringVMFlag},
1125 {CC"getBooleanVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Boolean;",
1126 (void*)&WB_GetBooleanVMFlag},
1127 {CC"getIntxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
1128 (void*)&WB_GetIntxVMFlag},
1129 {CC"getUintxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
1130 (void*)&WB_GetUintxVMFlag},
1131 {CC"getUint64VMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;",
1132 (void*)&WB_GetUint64VMFlag},
1133 {CC"getDoubleVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Double;",
1134 (void*)&WB_GetDoubleVMFlag},
1135 {CC"getStringVMFlag", CC"(Ljava/lang/String;)Ljava/lang/String;",
1136 (void*)&WB_GetStringVMFlag},
1137 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable },
1138 {CC"fullGC", CC"()V", (void*)&WB_FullGC },
1139 {CC"youngGC", CC"()V", (void*)&WB_YoungGC },
1140 {CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory },
1141 {CC"allocateMetaspace",
1142 CC"(Ljava/lang/ClassLoader;J)J", (void*)&WB_AllocateMetaspace },
1143 {CC"freeMetaspace",
1144 CC"(Ljava/lang/ClassLoader;JJ)V", (void*)&WB_FreeMetaspace },
1145 {CC"incMetaspaceCapacityUntilGC", CC"(J)J", (void*)&WB_IncMetaspaceCapacityUntilGC },
1146 {CC"metaspaceCapacityUntilGC", CC"()J", (void*)&WB_MetaspaceCapacityUntilGC },
1147 {CC"getCPUFeatures", CC"()Ljava/lang/String;", (void*)&WB_GetCPUFeatures },
1148 {CC"getNMethod", CC"(Ljava/lang/reflect/Executable;Z)[Ljava/lang/Object;",
1149 (void*)&WB_GetNMethod },
1150 {CC"isMonitorInflated", CC"(Ljava/lang/Object;)Z", (void*)&WB_IsMonitorInflated },
1151 {CC"forceSafepoint", CC"()V", (void*)&WB_ForceSafepoint },
1152 {CC"checkLibSpecifiesNoexecstack", CC"(Ljava/lang/String;)Z",
1153 (void*)&WB_CheckLibSpecifiesNoexecstack},
1154 {CC"isContainerized", CC"()Z", (void*)&WB_IsContainerized },
1155 {CC"printOsInfo", CC"()V", (void*)&WB_PrintOsInfo },
1156 };
1157
1158 #undef CC
1159
1160 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass))
1161 {
1162 if (WhiteBoxAPI) {
1163 // Make sure that wbclass is loaded by the null classloader
1164 instanceKlassHandle ikh = instanceKlassHandle(JNIHandles::resolve(wbclass)->klass());
1165 Handle loader(ikh->class_loader());
1166 if (loader.is_null()) {
1167 WhiteBox::register_methods(env, wbclass, thread, methods, sizeof(methods) / sizeof(methods[0]));
1168 WhiteBox::register_extended(env, wbclass, thread);
1169 WhiteBox::set_used();
1170 }
1171 }
1172 }
1173 JVM_END