1 /* 2 * Copyright (c) 2012, 2014, 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/universe.hpp" 29 #include "oops/oop.inline.hpp" 30 31 #include "classfile/symbolTable.hpp" 32 #include "classfile/classLoaderData.hpp" 33 34 #include "prims/whitebox.hpp" 35 #include "prims/wbtestmethods/parserTests.hpp" 36 37 #include "runtime/arguments.hpp" 38 #include "runtime/interfaceSupport.hpp" 39 #include "runtime/os.hpp" 40 #include "utilities/array.hpp" 41 #include "utilities/debug.hpp" 42 #include "utilities/macros.hpp" 43 #include "utilities/exceptions.hpp" 44 45 #if INCLUDE_ALL_GCS 46 #include "gc_implementation/parallelScavenge/parallelScavengeHeap.inline.hpp" 47 #include "gc_implementation/g1/concurrentMark.hpp" 48 #include "gc_implementation/g1/g1CollectedHeap.inline.hpp" 49 #include "gc_implementation/g1/heapRegionRemSet.hpp" 50 #endif // INCLUDE_ALL_GCS 51 52 #if INCLUDE_NMT 53 #include "services/mallocSiteTable.hpp" 54 #include "services/memTracker.hpp" 55 #include "utilities/nativeCallStack.hpp" 56 #endif // INCLUDE_NMT 57 58 #include "compiler/compileBroker.hpp" 59 #include "jvmtifiles/jvmtiEnv.hpp" 60 #include "runtime/compilationPolicy.hpp" 61 62 PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC 63 64 #define SIZE_T_MAX_VALUE ((size_t) -1) 65 66 bool WhiteBox::_used = false; 67 68 WB_ENTRY(jlong, WB_GetObjectAddress(JNIEnv* env, jobject o, jobject obj)) 69 return (jlong)(void*)JNIHandles::resolve(obj); 70 WB_END 71 72 WB_ENTRY(jint, WB_GetHeapOopSize(JNIEnv* env, jobject o)) 73 return heapOopSize; 74 WB_END 75 76 WB_ENTRY(jint, WB_GetVMPageSize(JNIEnv* env, jobject o)) 77 return os::vm_page_size(); 78 WB_END 79 80 class WBIsKlassAliveClosure : public KlassClosure { 81 Symbol* _name; 82 bool _found; 83 public: 84 WBIsKlassAliveClosure(Symbol* name) : _name(name), _found(false) {} 85 86 void do_klass(Klass* k) { 87 if (_found) return; 88 Symbol* ksym = k->name(); 89 if (ksym->fast_compare(_name) == 0) { 90 _found = true; 91 } 92 } 93 94 bool found() const { 95 return _found; 96 } 97 }; 98 99 WB_ENTRY(jboolean, WB_IsClassAlive(JNIEnv* env, jobject target, jstring name)) 100 Handle h_name = JNIHandles::resolve(name); 101 if (h_name.is_null()) return false; 102 Symbol* sym = java_lang_String::as_symbol(h_name, CHECK_false); 103 TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return 104 105 WBIsKlassAliveClosure closure(sym); 106 ClassLoaderDataGraph::classes_do(&closure); 107 108 return closure.found(); 109 WB_END 110 111 WB_ENTRY(jboolean, WB_ClassKnownToNotExist(JNIEnv* env, jobject o, jobject loader, jstring name)) 112 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 113 const char* class_name = env->GetStringUTFChars(name, NULL); 114 jboolean result = JVM_KnownToNotExist(env, loader, class_name); 115 env->ReleaseStringUTFChars(name, class_name); 116 return result; 117 WB_END 118 119 WB_ENTRY(jobjectArray, WB_GetLookupCacheURLs(JNIEnv* env, jobject o, jobject loader)) 120 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 121 return JVM_GetResourceLookupCacheURLs(env, loader); 122 WB_END 123 124 WB_ENTRY(jintArray, WB_GetLookupCacheMatches(JNIEnv* env, jobject o, jobject loader, jstring name)) 125 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 126 const char* resource_name = env->GetStringUTFChars(name, NULL); 127 jintArray result = JVM_GetResourceLookupCache(env, loader, resource_name); 128 129 env->ReleaseStringUTFChars(name, resource_name); 130 return result; 131 WB_END 132 133 WB_ENTRY(void, WB_AddToBootstrapClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) { 134 #if INCLUDE_JVMTI 135 ResourceMark rm; 136 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment)); 137 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION); 138 jvmtiError err = jvmti_env->AddToBootstrapClassLoaderSearch(seg); 139 assert(err == JVMTI_ERROR_NONE, "must not fail"); 140 #endif 141 } 142 WB_END 143 144 WB_ENTRY(void, WB_AddToSystemClassLoaderSearch(JNIEnv* env, jobject o, jstring segment)) { 145 #if INCLUDE_JVMTI 146 ResourceMark rm; 147 const char* seg = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(segment)); 148 JvmtiEnv* jvmti_env = JvmtiEnv::create_a_jvmti(JVMTI_VERSION); 149 jvmtiError err = jvmti_env->AddToSystemClassLoaderSearch(seg); 150 assert(err == JVMTI_ERROR_NONE, "must not fail"); 151 #endif 152 } 153 WB_END 154 155 156 WB_ENTRY(jlong, WB_GetCompressedOopsMaxHeapSize(JNIEnv* env, jobject o)) { 157 return (jlong)Arguments::max_heap_for_compressed_oops(); 158 } 159 WB_END 160 161 WB_ENTRY(void, WB_PrintHeapSizes(JNIEnv* env, jobject o)) { 162 CollectorPolicy * p = Universe::heap()->collector_policy(); 163 gclog_or_tty->print_cr("Minimum heap "SIZE_FORMAT" Initial heap " 164 SIZE_FORMAT" Maximum heap "SIZE_FORMAT" Min alignment "SIZE_FORMAT" Max alignment "SIZE_FORMAT, 165 p->min_heap_byte_size(), p->initial_heap_byte_size(), p->max_heap_byte_size(), 166 p->space_alignment(), p->heap_alignment()); 167 } 168 WB_END 169 170 #ifndef PRODUCT 171 // Forward declaration 172 void TestReservedSpace_test(); 173 void TestReserveMemorySpecial_test(); 174 void TestVirtualSpace_test(); 175 void TestMetaspaceAux_test(); 176 #endif 177 178 WB_ENTRY(void, WB_RunMemoryUnitTests(JNIEnv* env, jobject o)) 179 #ifndef PRODUCT 180 TestReservedSpace_test(); 181 TestReserveMemorySpecial_test(); 182 TestVirtualSpace_test(); 183 TestMetaspaceAux_test(); 184 #endif 185 WB_END 186 187 WB_ENTRY(void, WB_ReadFromNoaccessArea(JNIEnv* env, jobject o)) 188 size_t granularity = os::vm_allocation_granularity(); 189 ReservedHeapSpace rhs(100 * granularity, granularity, false, NULL); 190 VirtualSpace vs; 191 vs.initialize(rhs, 50 * granularity); 192 193 //Check if constraints are complied 194 if (!( UseCompressedOops && rhs.base() != NULL && 195 Universe::narrow_oop_base() != NULL && 196 Universe::narrow_oop_use_implicit_null_checks() )) { 197 tty->print_cr("WB_ReadFromNoaccessArea method is useless:\n " 198 "\tUseCompressedOops is %d\n" 199 "\trhs.base() is "PTR_FORMAT"\n" 200 "\tUniverse::narrow_oop_base() is "PTR_FORMAT"\n" 201 "\tUniverse::narrow_oop_use_implicit_null_checks() is %d", 202 UseCompressedOops, 203 rhs.base(), 204 Universe::narrow_oop_base(), 205 Universe::narrow_oop_use_implicit_null_checks()); 206 return; 207 } 208 tty->print_cr("Reading from no access area... "); 209 tty->print_cr("*(vs.low_boundary() - rhs.noaccess_prefix() / 2 ) = %c", 210 *(vs.low_boundary() - rhs.noaccess_prefix() / 2 )); 211 WB_END 212 213 static jint wb_stress_virtual_space_resize(size_t reserved_space_size, 214 size_t magnitude, size_t iterations) { 215 size_t granularity = os::vm_allocation_granularity(); 216 ReservedHeapSpace rhs(reserved_space_size * granularity, granularity, false, NULL); 217 VirtualSpace vs; 218 if (!vs.initialize(rhs, 0)) { 219 tty->print_cr("Failed to initialize VirtualSpace. Can't proceed."); 220 return 3; 221 } 222 223 long seed = os::random(); 224 tty->print_cr("Random seed is %ld", seed); 225 os::init_random(seed); 226 227 for (size_t i = 0; i < iterations; i++) { 228 229 // Whether we will shrink or grow 230 bool shrink = os::random() % 2L == 0; 231 232 // Get random delta to resize virtual space 233 size_t delta = (size_t)os::random() % magnitude; 234 235 // If we are about to shrink virtual space below zero, then expand instead 236 if (shrink && vs.committed_size() < delta) { 237 shrink = false; 238 } 239 240 // Resizing by delta 241 if (shrink) { 242 vs.shrink_by(delta); 243 } else { 244 // If expanding fails expand_by will silently return false 245 vs.expand_by(delta, true); 246 } 247 } 248 return 0; 249 } 250 251 WB_ENTRY(jint, WB_StressVirtualSpaceResize(JNIEnv* env, jobject o, 252 jlong reserved_space_size, jlong magnitude, jlong iterations)) 253 tty->print_cr("reservedSpaceSize="JLONG_FORMAT", magnitude="JLONG_FORMAT", " 254 "iterations="JLONG_FORMAT"\n", reserved_space_size, magnitude, 255 iterations); 256 if (reserved_space_size < 0 || magnitude < 0 || iterations < 0) { 257 tty->print_cr("One of variables printed above is negative. Can't proceed.\n"); 258 return 1; 259 } 260 261 // sizeof(size_t) depends on whether OS is 32bit or 64bit. sizeof(jlong) is 262 // always 8 byte. That's why we should avoid overflow in case of 32bit platform. 263 if (sizeof(size_t) < sizeof(jlong)) { 264 jlong size_t_max_value = (jlong) SIZE_T_MAX_VALUE; 265 if (reserved_space_size > size_t_max_value || magnitude > size_t_max_value 266 || iterations > size_t_max_value) { 267 tty->print_cr("One of variables printed above overflows size_t. Can't proceed.\n"); 268 return 2; 269 } 270 } 271 272 return wb_stress_virtual_space_resize((size_t) reserved_space_size, 273 (size_t) magnitude, (size_t) iterations); 274 WB_END 275 276 WB_ENTRY(jboolean, WB_isObjectInOldGen(JNIEnv* env, jobject o, jobject obj)) 277 oop p = JNIHandles::resolve(obj); 278 #if INCLUDE_ALL_GCS 279 if (UseG1GC) { 280 G1CollectedHeap* g1 = G1CollectedHeap::heap(); 281 const HeapRegion* hr = g1->heap_region_containing(p); 282 if (hr == NULL) { 283 return false; 284 } 285 return !(hr->is_young()); 286 } else if (UseParallelGC) { 287 ParallelScavengeHeap* psh = ParallelScavengeHeap::heap(); 288 return !psh->is_in_young(p); 289 } 290 #endif // INCLUDE_ALL_GCS 291 GenCollectedHeap* gch = GenCollectedHeap::heap(); 292 return !gch->is_in_young(p); 293 WB_END 294 295 WB_ENTRY(jlong, WB_GetObjectSize(JNIEnv* env, jobject o, jobject obj)) 296 oop p = JNIHandles::resolve(obj); 297 return p->size() * HeapWordSize; 298 WB_END 299 300 #if INCLUDE_ALL_GCS 301 WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj)) 302 G1CollectedHeap* g1 = G1CollectedHeap::heap(); 303 oop result = JNIHandles::resolve(obj); 304 const HeapRegion* hr = g1->heap_region_containing(result); 305 return hr->isHumongous(); 306 WB_END 307 308 WB_ENTRY(jlong, WB_G1NumFreeRegions(JNIEnv* env, jobject o)) 309 G1CollectedHeap* g1 = G1CollectedHeap::heap(); 310 size_t nr = g1->num_free_regions(); 311 return (jlong)nr; 312 WB_END 313 314 WB_ENTRY(jboolean, WB_G1InConcurrentMark(JNIEnv* env, jobject o)) 315 G1CollectedHeap* g1 = G1CollectedHeap::heap(); 316 ConcurrentMark* cm = g1->concurrent_mark(); 317 return cm->concurrent_marking_in_progress(); 318 WB_END 319 320 WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o)) 321 return (jint)HeapRegion::GrainBytes; 322 WB_END 323 #endif // INCLUDE_ALL_GCS 324 325 #if INCLUDE_NMT 326 // Alloc memory using the test memory type so that we can use that to see if 327 // NMT picks it up correctly 328 WB_ENTRY(jlong, WB_NMTMalloc(JNIEnv* env, jobject o, jlong size)) 329 jlong addr = 0; 330 addr = (jlong)(uintptr_t)os::malloc(size, mtTest); 331 return addr; 332 WB_END 333 334 // Alloc memory with pseudo call stack. The test can create psudo malloc 335 // allocation site to stress the malloc tracking. 336 WB_ENTRY(jlong, WB_NMTMallocWithPseudoStack(JNIEnv* env, jobject o, jlong size, jint pseudo_stack)) 337 address pc = (address)(size_t)pseudo_stack; 338 NativeCallStack stack(&pc, 1); 339 return (jlong)(uintptr_t)os::malloc(size, mtTest, stack); 340 WB_END 341 342 // Free the memory allocated by NMTAllocTest 343 WB_ENTRY(void, WB_NMTFree(JNIEnv* env, jobject o, jlong mem)) 344 os::free((void*)(uintptr_t)mem, mtTest); 345 WB_END 346 347 WB_ENTRY(jlong, WB_NMTReserveMemory(JNIEnv* env, jobject o, jlong size)) 348 jlong addr = 0; 349 350 addr = (jlong)(uintptr_t)os::reserve_memory(size); 351 MemTracker::record_virtual_memory_type((address)addr, mtTest); 352 353 return addr; 354 WB_END 355 356 357 WB_ENTRY(void, WB_NMTCommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) 358 os::commit_memory((char *)(uintptr_t)addr, size, !ExecMem); 359 MemTracker::record_virtual_memory_type((address)(uintptr_t)addr, mtTest); 360 WB_END 361 362 WB_ENTRY(void, WB_NMTUncommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) 363 os::uncommit_memory((char *)(uintptr_t)addr, size); 364 WB_END 365 366 WB_ENTRY(void, WB_NMTReleaseMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) 367 os::release_memory((char *)(uintptr_t)addr, size); 368 WB_END 369 370 WB_ENTRY(jboolean, WB_NMTIsDetailSupported(JNIEnv* env)) 371 return MemTracker::tracking_level() == NMT_detail; 372 WB_END 373 374 WB_ENTRY(jboolean, WB_NMTChangeTrackingLevel(JNIEnv* env)) 375 // Test that we can downgrade NMT levels but not upgrade them. 376 if (MemTracker::tracking_level() == NMT_off) { 377 MemTracker::transition_to(NMT_off); 378 return MemTracker::tracking_level() == NMT_off; 379 } else { 380 assert(MemTracker::tracking_level() == NMT_detail, "Should start out as detail tracking"); 381 MemTracker::transition_to(NMT_summary); 382 assert(MemTracker::tracking_level() == NMT_summary, "Should be summary now"); 383 384 // Can't go to detail once NMT is set to summary. 385 MemTracker::transition_to(NMT_detail); 386 assert(MemTracker::tracking_level() == NMT_summary, "Should still be summary now"); 387 388 // Shutdown sets tracking level to minimal. 389 MemTracker::shutdown(); 390 assert(MemTracker::tracking_level() == NMT_minimal, "Should be minimal now"); 391 392 // Once the tracking level is minimal, we cannot increase to summary. 393 // The code ignores this request instead of asserting because if the malloc site 394 // table overflows in another thread, it tries to change the code to summary. 395 MemTracker::transition_to(NMT_summary); 396 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now"); 397 398 // Really can never go up to detail, verify that the code would never do this. 399 MemTracker::transition_to(NMT_detail); 400 assert(MemTracker::tracking_level() == NMT_minimal, "Should still be minimal now"); 401 return MemTracker::tracking_level() == NMT_minimal; 402 } 403 WB_END 404 405 WB_ENTRY(jint, WB_NMTGetHashSize(JNIEnv* env, jobject o)) 406 int hash_size = MallocSiteTable::hash_buckets(); 407 assert(hash_size > 0, "NMT hash_size should be > 0"); 408 return (jint)hash_size; 409 WB_END 410 #endif // INCLUDE_NMT 411 412 static jmethodID reflected_method_to_jmid(JavaThread* thread, JNIEnv* env, jobject method) { 413 assert(method != NULL, "method should not be null"); 414 ThreadToNativeFromVM ttn(thread); 415 return env->FromReflectedMethod(method); 416 } 417 418 WB_ENTRY(void, WB_DeoptimizeAll(JNIEnv* env, jobject o)) 419 MutexLockerEx mu(Compile_lock); 420 CodeCache::mark_all_nmethods_for_deoptimization(); 421 VM_Deoptimize op; 422 VMThread::execute(&op); 423 WB_END 424 425 WB_ENTRY(jint, WB_DeoptimizeMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 426 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 427 int result = 0; 428 CHECK_JNI_EXCEPTION_(env, result); 429 MutexLockerEx mu(Compile_lock); 430 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 431 if (is_osr) { 432 result += mh->mark_osr_nmethods(); 433 } else if (mh->code() != NULL) { 434 mh->code()->mark_for_deoptimization(); 435 ++result; 436 } 437 result += CodeCache::mark_for_deoptimization(mh()); 438 if (result > 0) { 439 VM_Deoptimize op; 440 VMThread::execute(&op); 441 } 442 return result; 443 WB_END 444 445 WB_ENTRY(jboolean, WB_IsMethodCompiled(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 446 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 447 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 448 MutexLockerEx mu(Compile_lock); 449 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 450 nmethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code(); 451 if (code == NULL) { 452 return JNI_FALSE; 453 } 454 return (code->is_alive() && !code->is_marked_for_deoptimization()); 455 WB_END 456 457 WB_ENTRY(jboolean, WB_IsMethodCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr)) 458 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 459 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 460 MutexLockerEx mu(Compile_lock); 461 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 462 if (is_osr) { 463 return CompilationPolicy::can_be_osr_compiled(mh, comp_level); 464 } else { 465 return CompilationPolicy::can_be_compiled(mh, comp_level); 466 } 467 WB_END 468 469 WB_ENTRY(jboolean, WB_IsMethodQueuedForCompilation(JNIEnv* env, jobject o, jobject method)) 470 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 471 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 472 MutexLockerEx mu(Compile_lock); 473 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 474 return mh->queued_for_compilation(); 475 WB_END 476 477 WB_ENTRY(jint, WB_GetMethodCompilationLevel(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 478 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 479 CHECK_JNI_EXCEPTION_(env, CompLevel_none); 480 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 481 nmethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code(); 482 return (code != NULL ? code->comp_level() : CompLevel_none); 483 WB_END 484 485 WB_ENTRY(void, WB_MakeMethodNotCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr)) 486 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 487 CHECK_JNI_EXCEPTION(env); 488 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 489 if (is_osr) { 490 mh->set_not_osr_compilable(comp_level, true /* report */, "WhiteBox"); 491 } else { 492 mh->set_not_compilable(comp_level, true /* report */, "WhiteBox"); 493 } 494 WB_END 495 496 WB_ENTRY(jint, WB_GetMethodEntryBci(JNIEnv* env, jobject o, jobject method)) 497 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 498 CHECK_JNI_EXCEPTION_(env, InvocationEntryBci); 499 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 500 nmethod* code = mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false); 501 return (code != NULL && code->is_osr_method() ? code->osr_entry_bci() : InvocationEntryBci); 502 WB_END 503 504 WB_ENTRY(jboolean, WB_TestSetDontInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value)) 505 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 506 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 507 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 508 bool result = mh->dont_inline(); 509 mh->set_dont_inline(value == JNI_TRUE); 510 return result; 511 WB_END 512 513 WB_ENTRY(jint, WB_GetCompileQueueSize(JNIEnv* env, jobject o, jint comp_level)) 514 if (comp_level == CompLevel_any) { 515 return CompileBroker::queue_size(CompLevel_full_optimization) /* C2 */ + 516 CompileBroker::queue_size(CompLevel_full_profile) /* C1 */; 517 } else { 518 return CompileBroker::queue_size(comp_level); 519 } 520 WB_END 521 522 WB_ENTRY(jboolean, WB_TestSetForceInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value)) 523 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 524 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 525 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 526 bool result = mh->force_inline(); 527 mh->set_force_inline(value == JNI_TRUE); 528 return result; 529 WB_END 530 531 WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level, jint bci)) 532 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 533 CHECK_JNI_EXCEPTION_(env, JNI_FALSE); 534 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 535 nmethod* nm = CompileBroker::compile_method(mh, bci, comp_level, mh, mh->invocation_count(), "WhiteBox", THREAD); 536 MutexLockerEx mu(Compile_lock); 537 return (mh->queued_for_compilation() || nm != NULL); 538 WB_END 539 540 class VM_WhiteBoxOperation : public VM_Operation { 541 public: 542 VM_WhiteBoxOperation() { } 543 VMOp_Type type() const { return VMOp_WhiteBoxOperation; } 544 bool allow_nested_vm_operations() const { return true; } 545 }; 546 547 class AlwaysFalseClosure : public BoolObjectClosure { 548 public: 549 bool do_object_b(oop p) { return false; } 550 }; 551 552 static AlwaysFalseClosure always_false; 553 554 class VM_WhiteBoxCleanMethodData : public VM_WhiteBoxOperation { 555 public: 556 VM_WhiteBoxCleanMethodData(MethodData* mdo) : _mdo(mdo) { } 557 void doit() { 558 _mdo->clean_method_data(&always_false); 559 } 560 private: 561 MethodData* _mdo; 562 }; 563 564 WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method)) 565 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 566 CHECK_JNI_EXCEPTION(env); 567 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 568 MutexLockerEx mu(Compile_lock); 569 MethodData* mdo = mh->method_data(); 570 MethodCounters* mcs = mh->method_counters(); 571 572 if (mdo != NULL) { 573 mdo->init(); 574 ResourceMark rm; 575 int arg_count = mdo->method()->size_of_parameters(); 576 for (int i = 0; i < arg_count; i++) { 577 mdo->set_arg_modified(i, 0); 578 } 579 VM_WhiteBoxCleanMethodData op(mdo); 580 VMThread::execute(&op); 581 } 582 583 mh->clear_not_c1_compilable(); 584 mh->clear_not_c2_compilable(); 585 mh->clear_not_c2_osr_compilable(); 586 NOT_PRODUCT(mh->set_compiled_invocation_count(0)); 587 if (mcs != NULL) { 588 mcs->backedge_counter()->init(); 589 mcs->invocation_counter()->init(); 590 mcs->set_interpreter_invocation_count(0); 591 mcs->set_interpreter_throwout_count(0); 592 593 #ifdef TIERED 594 mcs->set_rate(0.0F); 595 mh->set_prev_event_count(0); 596 mh->set_prev_time(0); 597 #endif 598 } 599 WB_END 600 601 template <typename T> 602 static bool GetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, bool (*TAt)(const char*, T*)) { 603 if (name == NULL) { 604 return false; 605 } 606 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 607 const char* flag_name = env->GetStringUTFChars(name, NULL); 608 bool result = (*TAt)(flag_name, value); 609 env->ReleaseStringUTFChars(name, flag_name); 610 return result; 611 } 612 613 template <typename T> 614 static bool SetVMFlag(JavaThread* thread, JNIEnv* env, jstring name, T* value, bool (*TAtPut)(const char*, T*, Flag::Flags)) { 615 if (name == NULL) { 616 return false; 617 } 618 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 619 const char* flag_name = env->GetStringUTFChars(name, NULL); 620 bool result = (*TAtPut)(flag_name, value, Flag::INTERNAL); 621 env->ReleaseStringUTFChars(name, flag_name); 622 return result; 623 } 624 625 template <typename T> 626 static jobject box(JavaThread* thread, JNIEnv* env, Symbol* name, Symbol* sig, T value) { 627 ResourceMark rm(thread); 628 jclass clazz = env->FindClass(name->as_C_string()); 629 CHECK_JNI_EXCEPTION_(env, NULL); 630 jmethodID methodID = env->GetStaticMethodID(clazz, 631 vmSymbols::valueOf_name()->as_C_string(), 632 sig->as_C_string()); 633 CHECK_JNI_EXCEPTION_(env, NULL); 634 jobject result = env->CallStaticObjectMethod(clazz, methodID, value); 635 CHECK_JNI_EXCEPTION_(env, NULL); 636 return result; 637 } 638 639 static jobject booleanBox(JavaThread* thread, JNIEnv* env, jboolean value) { 640 return box(thread, env, vmSymbols::java_lang_Boolean(), vmSymbols::Boolean_valueOf_signature(), value); 641 } 642 static jobject integerBox(JavaThread* thread, JNIEnv* env, jint value) { 643 return box(thread, env, vmSymbols::java_lang_Integer(), vmSymbols::Integer_valueOf_signature(), value); 644 } 645 static jobject longBox(JavaThread* thread, JNIEnv* env, jlong value) { 646 return box(thread, env, vmSymbols::java_lang_Long(), vmSymbols::Long_valueOf_signature(), value); 647 } 648 /* static jobject floatBox(JavaThread* thread, JNIEnv* env, jfloat value) { 649 return box(thread, env, vmSymbols::java_lang_Float(), vmSymbols::Float_valueOf_signature(), value); 650 }*/ 651 static jobject doubleBox(JavaThread* thread, JNIEnv* env, jdouble value) { 652 return box(thread, env, vmSymbols::java_lang_Double(), vmSymbols::Double_valueOf_signature(), value); 653 } 654 655 WB_ENTRY(jobject, WB_GetBooleanVMFlag(JNIEnv* env, jobject o, jstring name)) 656 bool result; 657 if (GetVMFlag <bool> (thread, env, name, &result, &CommandLineFlags::boolAt)) { 658 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 659 return booleanBox(thread, env, result); 660 } 661 return NULL; 662 WB_END 663 664 WB_ENTRY(jobject, WB_GetIntxVMFlag(JNIEnv* env, jobject o, jstring name)) 665 intx result; 666 if (GetVMFlag <intx> (thread, env, name, &result, &CommandLineFlags::intxAt)) { 667 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 668 return longBox(thread, env, result); 669 } 670 return NULL; 671 WB_END 672 673 WB_ENTRY(jobject, WB_GetUintxVMFlag(JNIEnv* env, jobject o, jstring name)) 674 uintx result; 675 if (GetVMFlag <uintx> (thread, env, name, &result, &CommandLineFlags::uintxAt)) { 676 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 677 return longBox(thread, env, result); 678 } 679 return NULL; 680 WB_END 681 682 WB_ENTRY(jobject, WB_GetUint64VMFlag(JNIEnv* env, jobject o, jstring name)) 683 uint64_t result; 684 if (GetVMFlag <uint64_t> (thread, env, name, &result, &CommandLineFlags::uint64_tAt)) { 685 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 686 return longBox(thread, env, result); 687 } 688 return NULL; 689 WB_END 690 691 WB_ENTRY(jobject, WB_GetDoubleVMFlag(JNIEnv* env, jobject o, jstring name)) 692 double result; 693 if (GetVMFlag <double> (thread, env, name, &result, &CommandLineFlags::doubleAt)) { 694 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 695 return doubleBox(thread, env, result); 696 } 697 return NULL; 698 WB_END 699 700 WB_ENTRY(jstring, WB_GetStringVMFlag(JNIEnv* env, jobject o, jstring name)) 701 ccstr ccstrResult; 702 if (GetVMFlag <ccstr> (thread, env, name, &ccstrResult, &CommandLineFlags::ccstrAt)) { 703 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 704 jstring result = env->NewStringUTF(ccstrResult); 705 CHECK_JNI_EXCEPTION_(env, NULL); 706 return result; 707 } 708 return NULL; 709 WB_END 710 711 WB_ENTRY(void, WB_SetBooleanVMFlag(JNIEnv* env, jobject o, jstring name, jboolean value)) 712 bool result = value == JNI_TRUE ? true : false; 713 SetVMFlag <bool> (thread, env, name, &result, &CommandLineFlags::boolAtPut); 714 WB_END 715 716 WB_ENTRY(void, WB_SetIntxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 717 intx result = value; 718 SetVMFlag <intx> (thread, env, name, &result, &CommandLineFlags::intxAtPut); 719 WB_END 720 721 WB_ENTRY(void, WB_SetUintxVMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 722 uintx result = value; 723 SetVMFlag <uintx> (thread, env, name, &result, &CommandLineFlags::uintxAtPut); 724 WB_END 725 726 WB_ENTRY(void, WB_SetUint64VMFlag(JNIEnv* env, jobject o, jstring name, jlong value)) 727 uint64_t result = value; 728 SetVMFlag <uint64_t> (thread, env, name, &result, &CommandLineFlags::uint64_tAtPut); 729 WB_END 730 731 WB_ENTRY(void, WB_SetDoubleVMFlag(JNIEnv* env, jobject o, jstring name, jdouble value)) 732 double result = value; 733 SetVMFlag <double> (thread, env, name, &result, &CommandLineFlags::doubleAtPut); 734 WB_END 735 736 WB_ENTRY(void, WB_SetStringVMFlag(JNIEnv* env, jobject o, jstring name, jstring value)) 737 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 738 const char* ccstrValue = (value == NULL) ? NULL : env->GetStringUTFChars(value, NULL); 739 ccstr ccstrResult = ccstrValue; 740 bool needFree; 741 { 742 ThreadInVMfromNative ttvfn(thread); // back to VM 743 needFree = SetVMFlag <ccstr> (thread, env, name, &ccstrResult, &CommandLineFlags::ccstrAtPut); 744 } 745 if (value != NULL) { 746 env->ReleaseStringUTFChars(value, ccstrValue); 747 } 748 if (needFree) { 749 FREE_C_HEAP_ARRAY(char, ccstrResult, mtInternal); 750 } 751 WB_END 752 753 754 WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString)) 755 ResourceMark rm(THREAD); 756 int len; 757 jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len, CHECK_false); 758 return (StringTable::lookup(name, len) != NULL); 759 WB_END 760 761 WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o)) 762 Universe::heap()->collector_policy()->set_should_clear_all_soft_refs(true); 763 Universe::heap()->collect(GCCause::_last_ditch_collection); 764 #if INCLUDE_ALL_GCS 765 if (UseG1GC) { 766 // Needs to be cleared explicitly for G1 767 Universe::heap()->collector_policy()->set_should_clear_all_soft_refs(false); 768 } 769 #endif // INCLUDE_ALL_GCS 770 WB_END 771 772 WB_ENTRY(void, WB_YoungGC(JNIEnv* env, jobject o)) 773 Universe::heap()->collect(GCCause::_wb_young_gc); 774 WB_END 775 776 WB_ENTRY(void, WB_ReadReservedMemory(JNIEnv* env, jobject o)) 777 // static+volatile in order to force the read to happen 778 // (not be eliminated by the compiler) 779 static char c; 780 static volatile char* p; 781 782 p = os::reserve_memory(os::vm_allocation_granularity(), NULL, 0); 783 if (p == NULL) { 784 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), "Failed to reserve memory"); 785 } 786 787 c = *p; 788 WB_END 789 790 WB_ENTRY(jstring, WB_GetCPUFeatures(JNIEnv* env, jobject o)) 791 const char* cpu_features = VM_Version::cpu_features(); 792 ThreadToNativeFromVM ttn(thread); 793 jstring features_string = env->NewStringUTF(cpu_features); 794 795 CHECK_JNI_EXCEPTION_(env, NULL); 796 797 return features_string; 798 WB_END 799 800 801 WB_ENTRY(jobjectArray, WB_GetNMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr)) 802 ResourceMark rm(THREAD); 803 jmethodID jmid = reflected_method_to_jmid(thread, env, method); 804 CHECK_JNI_EXCEPTION_(env, NULL); 805 methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); 806 nmethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code(); 807 jobjectArray result = NULL; 808 if (code == NULL) { 809 return result; 810 } 811 int insts_size = code->insts_size(); 812 813 ThreadToNativeFromVM ttn(thread); 814 jclass clazz = env->FindClass(vmSymbols::java_lang_Object()->as_C_string()); 815 CHECK_JNI_EXCEPTION_(env, NULL); 816 result = env->NewObjectArray(2, clazz, NULL); 817 if (result == NULL) { 818 return result; 819 } 820 821 jobject obj = integerBox(thread, env, code->comp_level()); 822 CHECK_JNI_EXCEPTION_(env, NULL); 823 env->SetObjectArrayElement(result, 0, obj); 824 825 jbyteArray insts = env->NewByteArray(insts_size); 826 CHECK_JNI_EXCEPTION_(env, NULL); 827 env->SetByteArrayRegion(insts, 0, insts_size, (jbyte*) code->insts_begin()); 828 env->SetObjectArrayElement(result, 1, insts); 829 830 return result; 831 WB_END 832 833 834 int WhiteBox::array_bytes_to_length(size_t bytes) { 835 return Array<u1>::bytes_to_length(bytes); 836 } 837 838 WB_ENTRY(jlong, WB_AllocateMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong size)) 839 if (size < 0) { 840 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 841 err_msg("WB_AllocateMetaspace: size is negative: " JLONG_FORMAT, size)); 842 } 843 844 oop class_loader_oop = JNIHandles::resolve(class_loader); 845 ClassLoaderData* cld = class_loader_oop != NULL 846 ? java_lang_ClassLoader::loader_data(class_loader_oop) 847 : ClassLoaderData::the_null_class_loader_data(); 848 849 void* metadata = MetadataFactory::new_writeable_array<u1>(cld, WhiteBox::array_bytes_to_length((size_t)size), thread); 850 851 return (jlong)(uintptr_t)metadata; 852 WB_END 853 854 WB_ENTRY(void, WB_FreeMetaspace(JNIEnv* env, jobject wb, jobject class_loader, jlong addr, jlong size)) 855 oop class_loader_oop = JNIHandles::resolve(class_loader); 856 ClassLoaderData* cld = class_loader_oop != NULL 857 ? java_lang_ClassLoader::loader_data(class_loader_oop) 858 : ClassLoaderData::the_null_class_loader_data(); 859 860 MetadataFactory::free_array(cld, (Array<u1>*)(uintptr_t)addr); 861 WB_END 862 863 WB_ENTRY(jlong, WB_IncMetaspaceCapacityUntilGC(JNIEnv* env, jobject wb, jlong inc)) 864 if (inc < 0) { 865 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 866 err_msg("WB_IncMetaspaceCapacityUntilGC: inc is negative: " JLONG_FORMAT, inc)); 867 } 868 869 jlong max_size_t = (jlong) ((size_t) -1); 870 if (inc > max_size_t) { 871 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 872 err_msg("WB_IncMetaspaceCapacityUntilGC: inc does not fit in size_t: " JLONG_FORMAT, inc)); 873 } 874 875 size_t new_cap_until_GC = 0; 876 size_t aligned_inc = align_size_down((size_t) inc, Metaspace::commit_alignment()); 877 bool success = MetaspaceGC::inc_capacity_until_GC(aligned_inc, &new_cap_until_GC); 878 if (!success) { 879 THROW_MSG_0(vmSymbols::java_lang_IllegalStateException(), 880 "WB_IncMetaspaceCapacityUntilGC: could not increase capacity until GC " 881 "due to contention with another thread"); 882 } 883 return (jlong) new_cap_until_GC; 884 WB_END 885 886 WB_ENTRY(jlong, WB_MetaspaceCapacityUntilGC(JNIEnv* env, jobject wb)) 887 return (jlong) MetaspaceGC::capacity_until_GC(); 888 WB_END 889 890 //Some convenience methods to deal with objects from java 891 int WhiteBox::offset_for_field(const char* field_name, oop object, 892 Symbol* signature_symbol) { 893 assert(field_name != NULL && strlen(field_name) > 0, "Field name not valid"); 894 Thread* THREAD = Thread::current(); 895 896 //Get the class of our object 897 Klass* arg_klass = object->klass(); 898 //Turn it into an instance-klass 899 InstanceKlass* ik = InstanceKlass::cast(arg_klass); 900 901 //Create symbols to look for in the class 902 TempNewSymbol name_symbol = SymbolTable::lookup(field_name, (int) strlen(field_name), 903 THREAD); 904 905 //To be filled in with an offset of the field we're looking for 906 fieldDescriptor fd; 907 908 Klass* res = ik->find_field(name_symbol, signature_symbol, &fd); 909 if (res == NULL) { 910 tty->print_cr("Invalid layout of %s at %s", ik->external_name(), 911 name_symbol->as_C_string()); 912 fatal("Invalid layout of preloaded class"); 913 } 914 915 //fetch the field at the offset we've found 916 int dest_offset = fd.offset(); 917 918 return dest_offset; 919 } 920 921 922 const char* WhiteBox::lookup_jstring(const char* field_name, oop object) { 923 int offset = offset_for_field(field_name, object, 924 vmSymbols::string_signature()); 925 oop string = object->obj_field(offset); 926 if (string == NULL) { 927 return NULL; 928 } 929 const char* ret = java_lang_String::as_utf8_string(string); 930 return ret; 931 } 932 933 bool WhiteBox::lookup_bool(const char* field_name, oop object) { 934 int offset = 935 offset_for_field(field_name, object, vmSymbols::bool_signature()); 936 bool ret = (object->bool_field(offset) == JNI_TRUE); 937 return ret; 938 } 939 940 void WhiteBox::register_methods(JNIEnv* env, jclass wbclass, JavaThread* thread, JNINativeMethod* method_array, int method_count) { 941 ResourceMark rm; 942 ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI 943 944 // one by one registration natives for exception catching 945 jclass no_such_method_error_klass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string()); 946 CHECK_JNI_EXCEPTION(env); 947 for (int i = 0, n = method_count; i < n; ++i) { 948 // Skip dummy entries 949 if (method_array[i].fnPtr == NULL) continue; 950 if (env->RegisterNatives(wbclass, &method_array[i], 1) != 0) { 951 jthrowable throwable_obj = env->ExceptionOccurred(); 952 if (throwable_obj != NULL) { 953 env->ExceptionClear(); 954 if (env->IsInstanceOf(throwable_obj, no_such_method_error_klass)) { 955 // NoSuchMethodError is thrown when a method can't be found or a method is not native. 956 // Ignoring the exception since it is not preventing use of other WhiteBox methods. 957 tty->print_cr("Warning: 'NoSuchMethodError' on register of sun.hotspot.WhiteBox::%s%s", 958 method_array[i].name, method_array[i].signature); 959 } 960 } else { 961 // Registration failed unexpectedly. 962 tty->print_cr("Warning: unexpected error on register of sun.hotspot.WhiteBox::%s%s. All methods will be unregistered", 963 method_array[i].name, method_array[i].signature); 964 env->UnregisterNatives(wbclass); 965 break; 966 } 967 } 968 } 969 } 970 971 #define CC (char*) 972 973 static JNINativeMethod methods[] = { 974 {CC"getObjectAddress", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress }, 975 {CC"getObjectSize", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectSize }, 976 {CC"isObjectInOldGen", CC"(Ljava/lang/Object;)Z", (void*)&WB_isObjectInOldGen }, 977 {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize }, 978 {CC"getVMPageSize", CC"()I", (void*)&WB_GetVMPageSize }, 979 {CC"isClassAlive0", CC"(Ljava/lang/String;)Z", (void*)&WB_IsClassAlive }, 980 {CC"classKnownToNotExist", 981 CC"(Ljava/lang/ClassLoader;Ljava/lang/String;)Z",(void*)&WB_ClassKnownToNotExist}, 982 {CC"getLookupCacheURLs", CC"(Ljava/lang/ClassLoader;)[Ljava/net/URL;", (void*)&WB_GetLookupCacheURLs}, 983 {CC"getLookupCacheMatches", CC"(Ljava/lang/ClassLoader;Ljava/lang/String;)[I", 984 (void*)&WB_GetLookupCacheMatches}, 985 {CC"parseCommandLine", 986 CC"(Ljava/lang/String;[Lsun/hotspot/parser/DiagnosticCommand;)[Ljava/lang/Object;", 987 (void*) &WB_ParseCommandLine 988 }, 989 {CC"addToBootstrapClassLoaderSearch", CC"(Ljava/lang/String;)V", 990 (void*)&WB_AddToBootstrapClassLoaderSearch}, 991 {CC"addToSystemClassLoaderSearch", CC"(Ljava/lang/String;)V", 992 (void*)&WB_AddToSystemClassLoaderSearch}, 993 {CC"getCompressedOopsMaxHeapSize", CC"()J", 994 (void*)&WB_GetCompressedOopsMaxHeapSize}, 995 {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes }, 996 {CC"runMemoryUnitTests", CC"()V", (void*)&WB_RunMemoryUnitTests}, 997 {CC"readFromNoaccessArea",CC"()V", (void*)&WB_ReadFromNoaccessArea}, 998 {CC"stressVirtualSpaceResize",CC"(JJJ)I", (void*)&WB_StressVirtualSpaceResize}, 999 #if INCLUDE_ALL_GCS 1000 {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark}, 1001 {CC"g1IsHumongous", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous }, 1002 {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions }, 1003 {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize }, 1004 #endif // INCLUDE_ALL_GCS 1005 #if INCLUDE_NMT 1006 {CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc }, 1007 {CC"NMTMallocWithPseudoStack", CC"(JI)J", (void*)&WB_NMTMallocWithPseudoStack}, 1008 {CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree }, 1009 {CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory }, 1010 {CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory }, 1011 {CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory }, 1012 {CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory }, 1013 {CC"NMTIsDetailSupported",CC"()Z", (void*)&WB_NMTIsDetailSupported}, 1014 {CC"NMTChangeTrackingLevel", CC"()Z", (void*)&WB_NMTChangeTrackingLevel}, 1015 {CC"NMTGetHashSize", CC"()I", (void*)&WB_NMTGetHashSize }, 1016 #endif // INCLUDE_NMT 1017 {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll }, 1018 {CC"deoptimizeMethod", CC"(Ljava/lang/reflect/Executable;Z)I", 1019 (void*)&WB_DeoptimizeMethod }, 1020 {CC"isMethodCompiled", CC"(Ljava/lang/reflect/Executable;Z)Z", 1021 (void*)&WB_IsMethodCompiled }, 1022 {CC"isMethodCompilable", CC"(Ljava/lang/reflect/Executable;IZ)Z", 1023 (void*)&WB_IsMethodCompilable}, 1024 {CC"isMethodQueuedForCompilation", 1025 CC"(Ljava/lang/reflect/Executable;)Z", (void*)&WB_IsMethodQueuedForCompilation}, 1026 {CC"makeMethodNotCompilable", 1027 CC"(Ljava/lang/reflect/Executable;IZ)V", (void*)&WB_MakeMethodNotCompilable}, 1028 {CC"testSetDontInlineMethod", 1029 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetDontInlineMethod}, 1030 {CC"getMethodCompilationLevel", 1031 CC"(Ljava/lang/reflect/Executable;Z)I", (void*)&WB_GetMethodCompilationLevel}, 1032 {CC"getMethodEntryBci", 1033 CC"(Ljava/lang/reflect/Executable;)I", (void*)&WB_GetMethodEntryBci}, 1034 {CC"getCompileQueueSize", 1035 CC"(I)I", (void*)&WB_GetCompileQueueSize}, 1036 {CC"testSetForceInlineMethod", 1037 CC"(Ljava/lang/reflect/Executable;Z)Z", (void*)&WB_TestSetForceInlineMethod}, 1038 {CC"enqueueMethodForCompilation", 1039 CC"(Ljava/lang/reflect/Executable;II)Z", (void*)&WB_EnqueueMethodForCompilation}, 1040 {CC"clearMethodState", 1041 CC"(Ljava/lang/reflect/Executable;)V", (void*)&WB_ClearMethodState}, 1042 {CC"setBooleanVMFlag", CC"(Ljava/lang/String;Z)V",(void*)&WB_SetBooleanVMFlag}, 1043 {CC"setIntxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetIntxVMFlag}, 1044 {CC"setUintxVMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUintxVMFlag}, 1045 {CC"setUint64VMFlag", CC"(Ljava/lang/String;J)V",(void*)&WB_SetUint64VMFlag}, 1046 {CC"setDoubleVMFlag", CC"(Ljava/lang/String;D)V",(void*)&WB_SetDoubleVMFlag}, 1047 {CC"setStringVMFlag", CC"(Ljava/lang/String;Ljava/lang/String;)V", 1048 (void*)&WB_SetStringVMFlag}, 1049 {CC"getBooleanVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Boolean;", 1050 (void*)&WB_GetBooleanVMFlag}, 1051 {CC"getIntxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 1052 (void*)&WB_GetIntxVMFlag}, 1053 {CC"getUintxVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 1054 (void*)&WB_GetUintxVMFlag}, 1055 {CC"getUint64VMFlag", CC"(Ljava/lang/String;)Ljava/lang/Long;", 1056 (void*)&WB_GetUint64VMFlag}, 1057 {CC"getDoubleVMFlag", CC"(Ljava/lang/String;)Ljava/lang/Double;", 1058 (void*)&WB_GetDoubleVMFlag}, 1059 {CC"getStringVMFlag", CC"(Ljava/lang/String;)Ljava/lang/String;", 1060 (void*)&WB_GetStringVMFlag}, 1061 {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable }, 1062 {CC"fullGC", CC"()V", (void*)&WB_FullGC }, 1063 {CC"youngGC", CC"()V", (void*)&WB_YoungGC }, 1064 {CC"readReservedMemory", CC"()V", (void*)&WB_ReadReservedMemory }, 1065 {CC"allocateMetaspace", 1066 CC"(Ljava/lang/ClassLoader;J)J", (void*)&WB_AllocateMetaspace }, 1067 {CC"freeMetaspace", 1068 CC"(Ljava/lang/ClassLoader;JJ)V", (void*)&WB_FreeMetaspace }, 1069 {CC"incMetaspaceCapacityUntilGC", CC"(J)J", (void*)&WB_IncMetaspaceCapacityUntilGC }, 1070 {CC"metaspaceCapacityUntilGC", CC"()J", (void*)&WB_MetaspaceCapacityUntilGC }, 1071 {CC"getCPUFeatures", CC"()Ljava/lang/String;", (void*)&WB_GetCPUFeatures }, 1072 {CC"getNMethod", CC"(Ljava/lang/reflect/Executable;Z)[Ljava/lang/Object;", 1073 (void*)&WB_GetNMethod }, 1074 }; 1075 1076 #undef CC 1077 1078 JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass)) 1079 { 1080 if (WhiteBoxAPI) { 1081 // Make sure that wbclass is loaded by the null classloader 1082 instanceKlassHandle ikh = instanceKlassHandle(JNIHandles::resolve(wbclass)->klass()); 1083 Handle loader(ikh->class_loader()); 1084 if (loader.is_null()) { 1085 WhiteBox::register_methods(env, wbclass, thread, methods, sizeof(methods) / sizeof(methods[0])); 1086 WhiteBox::register_extended(env, wbclass, thread); 1087 WhiteBox::set_used(); 1088 } 1089 } 1090 } 1091 JVM_END