1 /* 2 * Copyright (c) 2011, 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 #include "precompiled.hpp" 25 #include "classfile/classLoaderData.inline.hpp" 26 #include "classfile/javaClasses.inline.hpp" 27 #include "classfile/stringTable.hpp" 28 #include "classfile/symbolTable.hpp" 29 #include "classfile/systemDictionary.hpp" 30 #include "classfile/vmClasses.hpp" 31 #include "code/scopeDesc.hpp" 32 #include "compiler/compileBroker.hpp" 33 #include "compiler/compilerEvent.hpp" 34 #include "compiler/compilerOracle.hpp" 35 #include "compiler/disassembler.hpp" 36 #include "compiler/oopMap.hpp" 37 #include "interpreter/bytecodeStream.hpp" 38 #include "interpreter/linkResolver.hpp" 39 #include "interpreter/oopMapCache.hpp" 40 #include "jfr/jfrEvents.hpp" 41 #include "jvmci/jvmciCodeInstaller.hpp" 42 #include "jvmci/jvmciCompilerToVM.hpp" 43 #include "jvmci/jvmciRuntime.hpp" 44 #include "logging/log.hpp" 45 #include "logging/logTag.hpp" 46 #include "memory/oopFactory.hpp" 47 #include "memory/universe.hpp" 48 #include "oops/constantPool.inline.hpp" 49 #include "oops/instanceKlass.inline.hpp" 50 #include "oops/instanceMirrorKlass.hpp" 51 #include "oops/method.inline.hpp" 52 #include "oops/objArrayKlass.inline.hpp" 53 #include "oops/typeArrayOop.inline.hpp" 54 #include "prims/jvmtiExport.hpp" 55 #include "prims/methodHandles.hpp" 56 #include "prims/nativeLookup.hpp" 57 #include "runtime/arguments.hpp" 58 #include "runtime/atomic.hpp" 59 #include "runtime/deoptimization.hpp" 60 #include "runtime/fieldDescriptor.inline.hpp" 61 #include "runtime/frame.inline.hpp" 62 #include "runtime/globals_extension.hpp" 63 #include "runtime/interfaceSupport.inline.hpp" 64 #include "runtime/jniHandles.inline.hpp" 65 #include "runtime/keepStackGCProcessed.hpp" 66 #include "runtime/reflection.hpp" 67 #include "runtime/stackFrameStream.inline.hpp" 68 #include "runtime/timerTrace.hpp" 69 #include "runtime/vframe.inline.hpp" 70 #include "runtime/vframe_hp.hpp" 71 #if INCLUDE_JFR 72 #include "jfr/jfr.hpp" 73 #endif 74 75 JVMCIKlassHandle::JVMCIKlassHandle(Thread* thread, Klass* klass) { 76 _thread = thread; 77 _klass = klass; 78 if (klass != nullptr) { 79 _holder = Handle(_thread, klass->klass_holder()); 80 } 81 } 82 83 JVMCIKlassHandle& JVMCIKlassHandle::operator=(Klass* klass) { 84 _klass = klass; 85 if (klass != nullptr) { 86 _holder = Handle(_thread, klass->klass_holder()); 87 } 88 return *this; 89 } 90 91 static void requireInHotSpot(const char* caller, JVMCI_TRAPS) { 92 if (!JVMCIENV->is_hotspot()) { 93 JVMCI_THROW_MSG(IllegalStateException, err_msg("Cannot call %s from JVMCI shared library", caller)); 94 } 95 } 96 97 static void requireNotInHotSpot(const char* caller, JVMCI_TRAPS) { 98 if (JVMCIENV->is_hotspot()) { 99 JVMCI_THROW_MSG(IllegalStateException, err_msg("Cannot call %s from HotSpot", caller)); 100 } 101 } 102 103 class JVMCITraceMark : public StackObj { 104 const char* _msg; 105 public: 106 JVMCITraceMark(const char* msg) { 107 _msg = msg; 108 JVMCI_event_2("Enter %s", _msg); 109 } 110 ~JVMCITraceMark() { 111 JVMCI_event_2(" Exit %s", _msg); 112 } 113 }; 114 115 class JavaArgumentUnboxer : public SignatureIterator { 116 protected: 117 JavaCallArguments* _jca; 118 arrayOop _args; 119 int _index; 120 121 Handle next_arg(BasicType expectedType); 122 123 public: 124 JavaArgumentUnboxer(Symbol* signature, 125 JavaCallArguments* jca, 126 arrayOop args, 127 bool is_static) 128 : SignatureIterator(signature) 129 { 130 this->_return_type = T_ILLEGAL; 131 _jca = jca; 132 _index = 0; 133 _args = args; 134 if (!is_static) { 135 _jca->push_oop(next_arg(T_OBJECT)); 136 } 137 do_parameters_on(this); 138 assert(_index == args->length(), "arg count mismatch with signature"); 139 } 140 141 private: 142 friend class SignatureIterator; // so do_parameters_on can call do_type 143 void do_type(BasicType type) { 144 if (is_reference_type(type)) { 145 _jca->push_oop(next_arg(T_OBJECT)); 146 return; 147 } 148 Handle arg = next_arg(type); 149 int box_offset = java_lang_boxing_object::value_offset(type); 150 switch (type) { 151 case T_BOOLEAN: _jca->push_int(arg->bool_field(box_offset)); break; 152 case T_CHAR: _jca->push_int(arg->char_field(box_offset)); break; 153 case T_SHORT: _jca->push_int(arg->short_field(box_offset)); break; 154 case T_BYTE: _jca->push_int(arg->byte_field(box_offset)); break; 155 case T_INT: _jca->push_int(arg->int_field(box_offset)); break; 156 case T_LONG: _jca->push_long(arg->long_field(box_offset)); break; 157 case T_FLOAT: _jca->push_float(arg->float_field(box_offset)); break; 158 case T_DOUBLE: _jca->push_double(arg->double_field(box_offset)); break; 159 default: ShouldNotReachHere(); 160 } 161 } 162 }; 163 164 Handle JavaArgumentUnboxer::next_arg(BasicType expectedType) { 165 assert(_index < _args->length(), "out of bounds"); 166 oop arg=((objArrayOop) (_args))->obj_at(_index++); 167 assert(expectedType == T_OBJECT || java_lang_boxing_object::is_instance(arg, expectedType), "arg type mismatch"); 168 return Handle(Thread::current(), arg); 169 } 170 171 // Bring the JVMCI compiler thread into the VM state. 172 #define JVMCI_VM_ENTRY_MARK \ 173 MACOS_AARCH64_ONLY(ThreadWXEnable __wx(WXWrite, thread)); \ 174 ThreadInVMfromNative __tiv(thread); \ 175 HandleMarkCleaner __hm(thread); \ 176 JavaThread* THREAD = thread; \ 177 debug_only(VMNativeEntryWrapper __vew;) 178 179 // Native method block that transitions current thread to '_thread_in_vm'. 180 // Note: CompilerThreadCanCallJava must precede JVMCIENV_FROM_JNI so that 181 // the translation of an uncaught exception in the JVMCIEnv does not make 182 // a Java call when __is_hotspot == false. 183 #define C2V_BLOCK(result_type, name, signature) \ 184 JVMCI_VM_ENTRY_MARK; \ 185 ResourceMark rm; \ 186 bool __is_hotspot = env == thread->jni_environment(); \ 187 CompilerThreadCanCallJava ccj(thread, __is_hotspot); \ 188 JVMCIENV_FROM_JNI(JVMCI::compilation_tick(thread), env); \ 189 190 // Entry to native method implementation that transitions 191 // current thread to '_thread_in_vm'. 192 #define C2V_VMENTRY(result_type, name, signature) \ 193 result_type JNICALL c2v_ ## name signature { \ 194 JavaThread* thread = JavaThread::current_or_null(); \ 195 if (thread == nullptr) { \ 196 env->ThrowNew(JNIJVMCI::InternalError::clazz(), \ 197 err_msg("Cannot call into HotSpot from JVMCI shared library without attaching current thread")); \ 198 return; \ 199 } \ 200 C2V_BLOCK(result_type, name, signature) \ 201 JVMCITraceMark jtm("CompilerToVM::" #name); 202 203 #define C2V_VMENTRY_(result_type, name, signature, result) \ 204 result_type JNICALL c2v_ ## name signature { \ 205 JavaThread* thread = JavaThread::current_or_null(); \ 206 if (thread == nullptr) { \ 207 env->ThrowNew(JNIJVMCI::InternalError::clazz(), \ 208 err_msg("Cannot call into HotSpot from JVMCI shared library without attaching current thread")); \ 209 return result; \ 210 } \ 211 C2V_BLOCK(result_type, name, signature) \ 212 JVMCITraceMark jtm("CompilerToVM::" #name); 213 214 #define C2V_VMENTRY_NULL(result_type, name, signature) C2V_VMENTRY_(result_type, name, signature, nullptr) 215 #define C2V_VMENTRY_0(result_type, name, signature) C2V_VMENTRY_(result_type, name, signature, 0) 216 217 // Entry to native method implementation that does not transition 218 // current thread to '_thread_in_vm'. 219 #define C2V_VMENTRY_PREFIX(result_type, name, signature) \ 220 result_type JNICALL c2v_ ## name signature { \ 221 JavaThread* thread = JavaThread::current_or_null(); 222 223 #define C2V_END } 224 225 #define JNI_THROW(caller, name, msg) do { \ 226 jint __throw_res = env->ThrowNew(JNIJVMCI::name::clazz(), msg); \ 227 if (__throw_res != JNI_OK) { \ 228 JVMCI_event_1("Throwing " #name " in " caller " returned %d", __throw_res); \ 229 } \ 230 return; \ 231 } while (0); 232 233 #define JNI_THROW_(caller, name, msg, result) do { \ 234 jint __throw_res = env->ThrowNew(JNIJVMCI::name::clazz(), msg); \ 235 if (__throw_res != JNI_OK) { \ 236 JVMCI_event_1("Throwing " #name " in " caller " returned %d", __throw_res); \ 237 } \ 238 return result; \ 239 } while (0) 240 241 jobjectArray readConfiguration0(JNIEnv *env, JVMCI_TRAPS); 242 243 C2V_VMENTRY_NULL(jobjectArray, readConfiguration, (JNIEnv* env)) 244 jobjectArray config = readConfiguration0(env, JVMCI_CHECK_NULL); 245 return config; 246 } 247 248 C2V_VMENTRY_NULL(jobject, getFlagValue, (JNIEnv* env, jobject c2vm, jobject name_handle)) 249 #define RETURN_BOXED_LONG(value) jvalue p; p.j = (jlong) (value); JVMCIObject box = JVMCIENV->create_box(T_LONG, &p, JVMCI_CHECK_NULL); return box.as_jobject(); 250 #define RETURN_BOXED_DOUBLE(value) jvalue p; p.d = (jdouble) (value); JVMCIObject box = JVMCIENV->create_box(T_DOUBLE, &p, JVMCI_CHECK_NULL); return box.as_jobject(); 251 JVMCIObject name = JVMCIENV->wrap(name_handle); 252 if (name.is_null()) { 253 JVMCI_THROW_NULL(NullPointerException); 254 } 255 const char* cstring = JVMCIENV->as_utf8_string(name); 256 const JVMFlag* flag = JVMFlag::find_declared_flag(cstring); 257 if (flag == nullptr) { 258 return c2vm; 259 } 260 if (flag->is_bool()) { 261 jvalue prim; 262 prim.z = flag->get_bool(); 263 JVMCIObject box = JVMCIENV->create_box(T_BOOLEAN, &prim, JVMCI_CHECK_NULL); 264 return JVMCIENV->get_jobject(box); 265 } else if (flag->is_ccstr()) { 266 JVMCIObject value = JVMCIENV->create_string(flag->get_ccstr(), JVMCI_CHECK_NULL); 267 return JVMCIENV->get_jobject(value); 268 } else if (flag->is_intx()) { 269 RETURN_BOXED_LONG(flag->get_intx()); 270 } else if (flag->is_int()) { 271 RETURN_BOXED_LONG(flag->get_int()); 272 } else if (flag->is_uint()) { 273 RETURN_BOXED_LONG(flag->get_uint()); 274 } else if (flag->is_uint64_t()) { 275 RETURN_BOXED_LONG(flag->get_uint64_t()); 276 } else if (flag->is_size_t()) { 277 RETURN_BOXED_LONG(flag->get_size_t()); 278 } else if (flag->is_uintx()) { 279 RETURN_BOXED_LONG(flag->get_uintx()); 280 } else if (flag->is_double()) { 281 RETURN_BOXED_DOUBLE(flag->get_double()); 282 } else { 283 JVMCI_ERROR_NULL("VM flag %s has unsupported type %s", flag->name(), flag->type_string()); 284 } 285 #undef RETURN_BOXED_LONG 286 #undef RETURN_BOXED_DOUBLE 287 C2V_END 288 289 // Macros for argument pairs representing a wrapper object and its wrapped VM pointer 290 #define ARGUMENT_PAIR(name) jobject name ## _obj, jlong name ## _pointer 291 #define UNPACK_PAIR(type, name) ((type*) name ## _pointer) 292 293 C2V_VMENTRY_NULL(jbyteArray, getBytecode, (JNIEnv* env, jobject, ARGUMENT_PAIR(method))) 294 methodHandle method(THREAD, UNPACK_PAIR(Method, method)); 295 296 int code_size = method->code_size(); 297 jbyte* reconstituted_code = NEW_RESOURCE_ARRAY(jbyte, code_size); 298 299 guarantee(method->method_holder()->is_rewritten(), "Method's holder should be rewritten"); 300 // iterate over all bytecodes and replace non-Java bytecodes 301 302 for (BytecodeStream s(method); s.next() != Bytecodes::_illegal; ) { 303 Bytecodes::Code code = s.code(); 304 Bytecodes::Code raw_code = s.raw_code(); 305 int bci = s.bci(); 306 int len = s.instruction_size(); 307 308 // Restore original byte code. 309 reconstituted_code[bci] = (jbyte) (s.is_wide()? Bytecodes::_wide : code); 310 if (len > 1) { 311 memcpy(reconstituted_code + (bci + 1), s.bcp()+1, len-1); 312 } 313 314 if (len > 1) { 315 // Restore the big-endian constant pool indexes. 316 // Cf. Rewriter::scan_method 317 switch (code) { 318 case Bytecodes::_getstatic: 319 case Bytecodes::_putstatic: 320 case Bytecodes::_getfield: 321 case Bytecodes::_putfield: 322 case Bytecodes::_invokevirtual: 323 case Bytecodes::_invokespecial: 324 case Bytecodes::_invokestatic: 325 case Bytecodes::_invokeinterface: 326 case Bytecodes::_invokehandle: { 327 int cp_index = Bytes::get_native_u2((address) reconstituted_code + (bci + 1)); 328 Bytes::put_Java_u2((address) reconstituted_code + (bci + 1), (u2) cp_index); 329 break; 330 } 331 332 case Bytecodes::_invokedynamic: { 333 int cp_index = Bytes::get_native_u4((address) reconstituted_code + (bci + 1)); 334 Bytes::put_Java_u4((address) reconstituted_code + (bci + 1), (u4) cp_index); 335 break; 336 } 337 338 default: 339 break; 340 } 341 342 // Not all ldc byte code are rewritten. 343 switch (raw_code) { 344 case Bytecodes::_fast_aldc: { 345 int cpc_index = reconstituted_code[bci + 1] & 0xff; 346 int cp_index = method->constants()->object_to_cp_index(cpc_index); 347 assert(cp_index < method->constants()->length(), "sanity check"); 348 reconstituted_code[bci + 1] = (jbyte) cp_index; 349 break; 350 } 351 352 case Bytecodes::_fast_aldc_w: { 353 int cpc_index = Bytes::get_native_u2((address) reconstituted_code + (bci + 1)); 354 int cp_index = method->constants()->object_to_cp_index(cpc_index); 355 assert(cp_index < method->constants()->length(), "sanity check"); 356 Bytes::put_Java_u2((address) reconstituted_code + (bci + 1), (u2) cp_index); 357 break; 358 } 359 360 default: 361 break; 362 } 363 } 364 } 365 366 JVMCIPrimitiveArray result = JVMCIENV->new_byteArray(code_size, JVMCI_CHECK_NULL); 367 JVMCIENV->copy_bytes_from(reconstituted_code, result, 0, code_size); 368 return JVMCIENV->get_jbyteArray(result); 369 C2V_END 370 371 C2V_VMENTRY_0(jint, getExceptionTableLength, (JNIEnv* env, jobject, ARGUMENT_PAIR(method))) 372 Method* method = UNPACK_PAIR(Method, method); 373 return method->exception_table_length(); 374 C2V_END 375 376 C2V_VMENTRY_0(jlong, getExceptionTableStart, (JNIEnv* env, jobject, ARGUMENT_PAIR(method))) 377 Method* method = UNPACK_PAIR(Method, method); 378 if (method->exception_table_length() == 0) { 379 return 0L; 380 } 381 return (jlong) (address) method->exception_table_start(); 382 C2V_END 383 384 C2V_VMENTRY_NULL(jobject, asResolvedJavaMethod, (JNIEnv* env, jobject, jobject executable_handle)) 385 requireInHotSpot("asResolvedJavaMethod", JVMCI_CHECK_NULL); 386 oop executable = JNIHandles::resolve(executable_handle); 387 oop mirror = nullptr; 388 int slot = 0; 389 390 if (executable->klass() == vmClasses::reflect_Constructor_klass()) { 391 mirror = java_lang_reflect_Constructor::clazz(executable); 392 slot = java_lang_reflect_Constructor::slot(executable); 393 } else { 394 assert(executable->klass() == vmClasses::reflect_Method_klass(), "wrong type"); 395 mirror = java_lang_reflect_Method::clazz(executable); 396 slot = java_lang_reflect_Method::slot(executable); 397 } 398 Klass* holder = java_lang_Class::as_Klass(mirror); 399 methodHandle method (THREAD, InstanceKlass::cast(holder)->method_with_idnum(slot)); 400 JVMCIObject result = JVMCIENV->get_jvmci_method(method, JVMCI_CHECK_NULL); 401 return JVMCIENV->get_jobject(result); 402 } 403 404 C2V_VMENTRY_NULL(jobject, getResolvedJavaMethod, (JNIEnv* env, jobject, jobject base, jlong offset)) 405 Method* method = nullptr; 406 JVMCIObject base_object = JVMCIENV->wrap(base); 407 if (base_object.is_null()) { 408 method = *((Method**)(offset)); 409 } else { 410 Handle obj = JVMCIENV->asConstant(base_object, JVMCI_CHECK_NULL); 411 if (obj->is_a(vmClasses::ResolvedMethodName_klass())) { 412 method = (Method*) (intptr_t) obj->long_field(offset); 413 } else { 414 JVMCI_THROW_MSG_NULL(IllegalArgumentException, err_msg("Unexpected type: %s", obj->klass()->external_name())); 415 } 416 } 417 if (method == nullptr) { 418 JVMCI_THROW_MSG_NULL(IllegalArgumentException, err_msg("Unexpected type: %s", JVMCIENV->klass_name(base_object))); 419 } 420 assert (method->is_method(), "invalid read"); 421 JVMCIObject result = JVMCIENV->get_jvmci_method(methodHandle(THREAD, method), JVMCI_CHECK_NULL); 422 return JVMCIENV->get_jobject(result); 423 } 424 425 C2V_VMENTRY_NULL(jobject, getConstantPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass_or_method), jboolean is_klass)) 426 ConstantPool* cp = nullptr; 427 if (UNPACK_PAIR(address, klass_or_method) == nullptr) { 428 JVMCI_THROW_NULL(NullPointerException); 429 } 430 if (!is_klass) { 431 cp = (UNPACK_PAIR(Method, klass_or_method))->constMethod()->constants(); 432 } else { 433 cp = InstanceKlass::cast(UNPACK_PAIR(Klass, klass_or_method))->constants(); 434 } 435 436 JVMCIObject result = JVMCIENV->get_jvmci_constant_pool(constantPoolHandle(THREAD, cp), JVMCI_CHECK_NULL); 437 return JVMCIENV->get_jobject(result); 438 } 439 440 C2V_VMENTRY_NULL(jobject, getResolvedJavaType0, (JNIEnv* env, jobject, jobject base, jlong offset, jboolean compressed)) 441 JVMCIObject base_object = JVMCIENV->wrap(base); 442 if (base_object.is_null()) { 443 JVMCI_THROW_MSG_NULL(NullPointerException, "base object is null"); 444 } 445 446 const char* base_desc = nullptr; 447 JVMCIKlassHandle klass(THREAD); 448 if (offset == oopDesc::klass_offset_in_bytes()) { 449 if (JVMCIENV->isa_HotSpotObjectConstantImpl(base_object)) { 450 Handle base_oop = JVMCIENV->asConstant(base_object, JVMCI_CHECK_NULL); 451 klass = base_oop->klass(); 452 } else { 453 goto unexpected; 454 } 455 } else if (!compressed) { 456 if (JVMCIENV->isa_HotSpotConstantPool(base_object)) { 457 ConstantPool* cp = JVMCIENV->asConstantPool(base_object); 458 if (offset == in_bytes(ConstantPool::pool_holder_offset())) { 459 klass = cp->pool_holder(); 460 } else { 461 base_desc = FormatBufferResource("[constant pool for %s]", cp->pool_holder()->signature_name()); 462 goto unexpected; 463 } 464 } else if (JVMCIENV->isa_HotSpotResolvedObjectTypeImpl(base_object)) { 465 Klass* base_klass = JVMCIENV->asKlass(base_object); 466 if (offset == in_bytes(Klass::subklass_offset())) { 467 klass = base_klass->subklass(); 468 } else if (offset == in_bytes(Klass::super_offset())) { 469 klass = base_klass->super(); 470 } else if (offset == in_bytes(Klass::next_sibling_offset())) { 471 klass = base_klass->next_sibling(); 472 } else if (offset == in_bytes(ObjArrayKlass::element_klass_offset()) && base_klass->is_objArray_klass()) { 473 klass = ObjArrayKlass::cast(base_klass)->element_klass(); 474 } else if (offset >= in_bytes(Klass::primary_supers_offset()) && 475 offset < in_bytes(Klass::primary_supers_offset()) + (int) (sizeof(Klass*) * Klass::primary_super_limit()) && 476 offset % sizeof(Klass*) == 0) { 477 // Offset is within the primary supers array 478 int index = (int) ((offset - in_bytes(Klass::primary_supers_offset())) / sizeof(Klass*)); 479 klass = base_klass->primary_super_of_depth(index); 480 } else { 481 base_desc = FormatBufferResource("[%s]", base_klass->signature_name()); 482 goto unexpected; 483 } 484 } else if (JVMCIENV->isa_HotSpotObjectConstantImpl(base_object)) { 485 Handle base_oop = JVMCIENV->asConstant(base_object, JVMCI_CHECK_NULL); 486 if (base_oop->is_a(vmClasses::Class_klass())) { 487 if (offset == java_lang_Class::klass_offset()) { 488 klass = java_lang_Class::as_Klass(base_oop()); 489 } else if (offset == java_lang_Class::array_klass_offset()) { 490 klass = java_lang_Class::array_klass_acquire(base_oop()); 491 } else { 492 base_desc = FormatBufferResource("[Class=%s]", java_lang_Class::as_Klass(base_oop())->signature_name()); 493 goto unexpected; 494 } 495 } else { 496 if (!base_oop.is_null()) { 497 base_desc = FormatBufferResource("[%s]", base_oop()->klass()->signature_name()); 498 } 499 goto unexpected; 500 } 501 } else if (JVMCIENV->isa_HotSpotMethodData(base_object)) { 502 jlong base_address = (intptr_t) JVMCIENV->asMethodData(base_object); 503 klass = *((Klass**) (intptr_t) (base_address + offset)); 504 if (klass == nullptr || !klass->is_loader_alive()) { 505 // Klasses in methodData might be concurrently unloading so return null in that case. 506 return nullptr; 507 } 508 } else { 509 goto unexpected; 510 } 511 } else { 512 goto unexpected; 513 } 514 515 { 516 if (klass == nullptr) { 517 return nullptr; 518 } 519 JVMCIObject result = JVMCIENV->get_jvmci_type(klass, JVMCI_CHECK_NULL); 520 return JVMCIENV->get_jobject(result); 521 } 522 523 unexpected: 524 JVMCI_THROW_MSG_NULL(IllegalArgumentException, 525 err_msg("Unexpected arguments: %s%s " JLONG_FORMAT " %s", 526 JVMCIENV->klass_name(base_object), base_desc == nullptr ? "" : base_desc, 527 offset, compressed ? "true" : "false")); 528 } 529 530 C2V_VMENTRY_NULL(jobject, findUniqueConcreteMethod, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass), ARGUMENT_PAIR(method))) 531 methodHandle method (THREAD, UNPACK_PAIR(Method, method)); 532 InstanceKlass* holder = InstanceKlass::cast(UNPACK_PAIR(Klass, klass)); 533 if (holder->is_interface()) { 534 JVMCI_THROW_MSG_NULL(InternalError, err_msg("Interface %s should be handled in Java code", holder->external_name())); 535 } 536 if (method->can_be_statically_bound()) { 537 JVMCI_THROW_MSG_NULL(InternalError, err_msg("Effectively static method %s.%s should be handled in Java code", method->method_holder()->external_name(), method->external_name())); 538 } 539 540 methodHandle ucm; 541 { 542 MutexLocker locker(Compile_lock); 543 ucm = methodHandle(THREAD, Dependencies::find_unique_concrete_method(holder, method())); 544 } 545 JVMCIObject result = JVMCIENV->get_jvmci_method(ucm, JVMCI_CHECK_NULL); 546 return JVMCIENV->get_jobject(result); 547 C2V_END 548 549 C2V_VMENTRY_NULL(jobject, getImplementor, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass))) 550 Klass* klass = UNPACK_PAIR(Klass, klass); 551 if (!klass->is_interface()) { 552 THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), 553 err_msg("Expected interface type, got %s", klass->external_name())); 554 } 555 InstanceKlass* iklass = InstanceKlass::cast(klass); 556 JVMCIKlassHandle handle(THREAD, iklass->implementor()); 557 JVMCIObject implementor = JVMCIENV->get_jvmci_type(handle, JVMCI_CHECK_NULL); 558 return JVMCIENV->get_jobject(implementor); 559 C2V_END 560 561 C2V_VMENTRY_0(jboolean, methodIsIgnoredBySecurityStackWalk,(JNIEnv* env, jobject, ARGUMENT_PAIR(method))) 562 Method* method = UNPACK_PAIR(Method, method); 563 return method->is_ignored_by_security_stack_walk(); 564 C2V_END 565 566 C2V_VMENTRY_0(jboolean, isCompilable,(JNIEnv* env, jobject, ARGUMENT_PAIR(method))) 567 Method* method = UNPACK_PAIR(Method, method); 568 // Skip redefined methods 569 if (method->is_old()) { 570 return false; 571 } 572 return !method->is_not_compilable(CompLevel_full_optimization); 573 C2V_END 574 575 C2V_VMENTRY_0(jboolean, hasNeverInlineDirective,(JNIEnv* env, jobject, ARGUMENT_PAIR(method))) 576 methodHandle method (THREAD, UNPACK_PAIR(Method, method)); 577 return !Inline || CompilerOracle::should_not_inline(method) || method->dont_inline(); 578 C2V_END 579 580 C2V_VMENTRY_0(jboolean, shouldInlineMethod,(JNIEnv* env, jobject, ARGUMENT_PAIR(method))) 581 methodHandle method (THREAD, UNPACK_PAIR(Method, method)); 582 return CompilerOracle::should_inline(method) || method->force_inline(); 583 C2V_END 584 585 C2V_VMENTRY_NULL(jobject, lookupType, (JNIEnv* env, jobject, jstring jname, ARGUMENT_PAIR(accessing_klass), jint accessing_klass_loader, jboolean resolve)) 586 CompilerThreadCanCallJava canCallJava(thread, resolve); // Resolution requires Java calls 587 JVMCIObject name = JVMCIENV->wrap(jname); 588 const char* str = JVMCIENV->as_utf8_string(name); 589 TempNewSymbol class_name = SymbolTable::new_symbol(str); 590 591 if (class_name->utf8_length() <= 1) { 592 JVMCI_THROW_MSG_NULL(InternalError, err_msg("Primitive type %s should be handled in Java code", str)); 593 } 594 595 #ifdef ASSERT 596 const char* val = Arguments::PropertyList_get_value(Arguments::system_properties(), "test.jvmci.lookupTypeException"); 597 if (val != nullptr) { 598 if (strstr(val, "<trace>") != nullptr) { 599 tty->print_cr("CompilerToVM.lookupType: %s", str); 600 } else if (strstr(str, val) != nullptr) { 601 THROW_MSG_NULL(vmSymbols::java_lang_Exception(), 602 err_msg("lookupTypeException: %s", str)); 603 } 604 } 605 #endif 606 607 JVMCIKlassHandle resolved_klass(THREAD); 608 Klass* accessing_klass = UNPACK_PAIR(Klass, accessing_klass); 609 Handle class_loader; 610 Handle protection_domain; 611 if (accessing_klass != nullptr) { 612 class_loader = Handle(THREAD, accessing_klass->class_loader()); 613 protection_domain = Handle(THREAD, accessing_klass->protection_domain()); 614 } else { 615 switch (accessing_klass_loader) { 616 case 0: break; // class_loader is already null, the boot loader 617 case 1: class_loader = Handle(THREAD, SystemDictionary::java_platform_loader()); break; 618 case 2: class_loader = Handle(THREAD, SystemDictionary::java_system_loader()); break; 619 default: 620 JVMCI_THROW_MSG_NULL(InternalError, err_msg("Illegal class loader value: %d", accessing_klass_loader)); 621 } 622 JVMCIENV->runtime()->initialize(JVMCI_CHECK_NULL); 623 } 624 625 if (resolve) { 626 resolved_klass = SystemDictionary::resolve_or_fail(class_name, class_loader, protection_domain, true, CHECK_NULL); 627 } else { 628 if (Signature::has_envelope(class_name)) { 629 // This is a name from a signature. Strip off the trimmings. 630 // Call recursive to keep scope of strippedsym. 631 TempNewSymbol strippedsym = Signature::strip_envelope(class_name); 632 resolved_klass = SystemDictionary::find_instance_klass(THREAD, strippedsym, 633 class_loader, 634 protection_domain); 635 } else if (Signature::is_array(class_name)) { 636 SignatureStream ss(class_name, false); 637 int ndim = ss.skip_array_prefix(); 638 if (ss.type() == T_OBJECT) { 639 Symbol* strippedsym = ss.as_symbol(); 640 resolved_klass = SystemDictionary::find_instance_klass(THREAD, strippedsym, 641 class_loader, 642 protection_domain); 643 if (!resolved_klass.is_null()) { 644 resolved_klass = resolved_klass->array_klass(ndim, CHECK_NULL); 645 } 646 } else { 647 resolved_klass = Universe::typeArrayKlass(ss.type())->array_klass(ndim, CHECK_NULL); 648 } 649 } else { 650 resolved_klass = SystemDictionary::find_instance_klass(THREAD, class_name, 651 class_loader, 652 protection_domain); 653 } 654 } 655 JVMCIObject result = JVMCIENV->get_jvmci_type(resolved_klass, JVMCI_CHECK_NULL); 656 return JVMCIENV->get_jobject(result); 657 C2V_END 658 659 C2V_VMENTRY_NULL(jobject, getArrayType, (JNIEnv* env, jobject, jchar type_char, ARGUMENT_PAIR(klass))) 660 JVMCIKlassHandle array_klass(THREAD); 661 Klass* klass = UNPACK_PAIR(Klass, klass); 662 if (klass == nullptr) { 663 BasicType type = JVMCIENV->typeCharToBasicType(type_char, JVMCI_CHECK_NULL); 664 if (type == T_VOID) { 665 return nullptr; 666 } 667 array_klass = Universe::typeArrayKlass(type); 668 if (array_klass == nullptr) { 669 JVMCI_THROW_MSG_NULL(InternalError, err_msg("No array klass for primitive type %s", type2name(type))); 670 } 671 } else { 672 array_klass = klass->array_klass(CHECK_NULL); 673 } 674 JVMCIObject result = JVMCIENV->get_jvmci_type(array_klass, JVMCI_CHECK_NULL); 675 return JVMCIENV->get_jobject(result); 676 C2V_END 677 678 C2V_VMENTRY_NULL(jobject, lookupClass, (JNIEnv* env, jobject, jclass mirror)) 679 requireInHotSpot("lookupClass", JVMCI_CHECK_NULL); 680 if (mirror == nullptr) { 681 return nullptr; 682 } 683 JVMCIKlassHandle klass(THREAD); 684 klass = java_lang_Class::as_Klass(JNIHandles::resolve(mirror)); 685 if (klass == nullptr) { 686 JVMCI_THROW_MSG_NULL(IllegalArgumentException, "Primitive classes are unsupported"); 687 } 688 JVMCIObject result = JVMCIENV->get_jvmci_type(klass, JVMCI_CHECK_NULL); 689 return JVMCIENV->get_jobject(result); 690 C2V_END 691 692 C2V_VMENTRY_NULL(jobject, lookupJClass, (JNIEnv* env, jobject, jlong jclass_value)) 693 if (jclass_value == 0L) { 694 JVMCI_THROW_MSG_NULL(IllegalArgumentException, "jclass must not be zero"); 695 } 696 jclass mirror = reinterpret_cast<jclass>(jclass_value); 697 // Since the jclass_value is passed as a jlong, we perform additional checks to prevent the caller from accidentally 698 // sending a value that is not a JNI handle. 699 if (JNIHandles::handle_type(thread, mirror) == JNIInvalidRefType) { 700 JVMCI_THROW_MSG_NULL(IllegalArgumentException, "jclass is not a valid JNI reference"); 701 } 702 oop obj = JNIHandles::resolve(mirror); 703 if (!java_lang_Class::is_instance(obj)) { 704 JVMCI_THROW_MSG_NULL(IllegalArgumentException, "jclass must be a reference to the Class object"); 705 } 706 JVMCIKlassHandle klass(THREAD, java_lang_Class::as_Klass(obj)); 707 JVMCIObject result = JVMCIENV->get_jvmci_type(klass, JVMCI_CHECK_NULL); 708 return JVMCIENV->get_jobject(result); 709 C2V_END 710 711 C2V_VMENTRY_0(jlong, getJObjectValue, (JNIEnv* env, jobject, jobject constant_jobject)) 712 requireNotInHotSpot("getJObjectValue", JVMCI_CHECK_0); 713 // Ensure that current JNI handle scope is not the top-most JNIHandleBlock as handles 714 // in that scope are only released when the thread exits. 715 if (!THREAD->has_last_Java_frame() && THREAD->active_handles()->pop_frame_link() == nullptr) { 716 JVMCI_THROW_MSG_0(IllegalStateException, err_msg("Cannot call getJObjectValue without Java frame anchor or a pushed JNI handle block")); 717 } 718 JVMCIObject constant = JVMCIENV->wrap(constant_jobject); 719 Handle constant_value = JVMCIENV->asConstant(constant, JVMCI_CHECK_0); 720 jobject jni_handle = JNIHandles::make_local(THREAD, constant_value()); 721 return reinterpret_cast<jlong>(jni_handle); 722 C2V_END 723 724 C2V_VMENTRY_NULL(jobject, getUncachedStringInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint index)) 725 constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp)); 726 constantTag tag = cp->tag_at(index); 727 if (!tag.is_string()) { 728 JVMCI_THROW_MSG_NULL(IllegalArgumentException, err_msg("Unexpected constant pool tag at index %d: %d", index, tag.value())); 729 } 730 oop obj = cp->uncached_string_at(index, CHECK_NULL); 731 return JVMCIENV->get_jobject(JVMCIENV->get_object_constant(obj)); 732 C2V_END 733 734 C2V_VMENTRY_NULL(jobject, lookupConstantInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint cp_index, bool resolve)) 735 constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp)); 736 oop obj; 737 if (!resolve) { 738 bool found_it; 739 obj = cp->find_cached_constant_at(cp_index, found_it, CHECK_NULL); 740 if (!found_it) { 741 return nullptr; 742 } 743 } else { 744 obj = cp->resolve_possibly_cached_constant_at(cp_index, CHECK_NULL); 745 } 746 constantTag tag = cp->tag_at(cp_index); 747 if (tag.is_dynamic_constant()) { 748 if (obj == nullptr) { 749 return JVMCIENV->get_jobject(JVMCIENV->get_JavaConstant_NULL_POINTER()); 750 } 751 BasicType bt = Signature::basic_type(cp->uncached_signature_ref_at(cp_index)); 752 if (!is_reference_type(bt)) { 753 if (!is_java_primitive(bt)) { 754 return JVMCIENV->get_jobject(JVMCIENV->get_JavaConstant_ILLEGAL()); 755 } 756 757 // Convert standard box (e.g. java.lang.Integer) to JVMCI box (e.g. jdk.vm.ci.meta.PrimitiveConstant) 758 jvalue value; 759 jlong raw_value; 760 jchar type_char; 761 BasicType bt2 = java_lang_boxing_object::get_value(obj, &value); 762 assert(bt2 == bt, ""); 763 switch (bt2) { 764 case T_LONG: type_char = 'J'; raw_value = value.j; break; 765 case T_DOUBLE: type_char = 'D'; raw_value = value.j; break; 766 case T_FLOAT: type_char = 'F'; raw_value = value.i; break; 767 case T_INT: type_char = 'I'; raw_value = value.i; break; 768 case T_SHORT: type_char = 'S'; raw_value = value.s; break; 769 case T_BYTE: type_char = 'B'; raw_value = value.b; break; 770 case T_CHAR: type_char = 'C'; raw_value = value.c; break; 771 case T_BOOLEAN: type_char = 'Z'; raw_value = value.z; break; 772 default: return JVMCIENV->get_jobject(JVMCIENV->get_JavaConstant_ILLEGAL()); 773 } 774 775 JVMCIObject result = JVMCIENV->call_JavaConstant_forPrimitive(type_char, raw_value, JVMCI_CHECK_NULL); 776 return JVMCIENV->get_jobject(result); 777 } 778 } 779 #ifdef ASSERT 780 // Support for testing an OOME raised in a context where the current thread cannot call Java 781 // 1. Put -Dtest.jvmci.oome_in_lookupConstantInPool=<trace> on the command line to 782 // discover possible values for step 2. 783 // Example output: 784 // 785 // CompilerToVM.lookupConstantInPool: "Overflow: String length out of range"{0x00000007ffeb2960} 786 // CompilerToVM.lookupConstantInPool: "null"{0x00000007ffebdfe8} 787 // CompilerToVM.lookupConstantInPool: "Maximum lock count exceeded"{0x00000007ffec4f90} 788 // CompilerToVM.lookupConstantInPool: "Negative length"{0x00000007ffec4468} 789 // 790 // 2. Choose a value shown in step 1. 791 // Example: -Dtest.jvmci.oome_in_lookupConstantInPool=Negative 792 const char* val = Arguments::PropertyList_get_value(Arguments::system_properties(), "test.jvmci.oome_in_lookupConstantInPool"); 793 if (val != nullptr) { 794 const char* str = obj->print_value_string(); 795 if (strstr(val, "<trace>") != nullptr) { 796 tty->print_cr("CompilerToVM.lookupConstantInPool: %s", str); 797 } else if (strstr(str, val) != nullptr) { 798 Handle garbage; 799 while (true) { 800 // Trigger an OutOfMemoryError 801 objArrayOop next = oopFactory::new_objectArray(0x7FFFFFFF, CHECK_NULL); 802 next->obj_at_put(0, garbage()); 803 garbage = Handle(THREAD, next); 804 } 805 } 806 } 807 #endif 808 return JVMCIENV->get_jobject(JVMCIENV->get_object_constant(obj)); 809 C2V_END 810 811 C2V_VMENTRY_NULL(jobjectArray, resolveBootstrapMethod, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint index)) 812 constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp)); 813 constantTag tag = cp->tag_at(index); 814 bool is_indy = tag.is_invoke_dynamic(); 815 bool is_condy = tag.is_dynamic_constant(); 816 if (!(is_condy || is_indy)) { 817 JVMCI_THROW_MSG_NULL(IllegalArgumentException, err_msg("Unexpected constant pool tag at index %d: %d", index, tag.value())); 818 } 819 // Get the indy entry based on CP index 820 int indy_index = -1; 821 if (is_indy) { 822 for (int i = 0; i < cp->resolved_indy_entries_length(); i++) { 823 if (cp->resolved_indy_entry_at(i)->constant_pool_index() == index) { 824 indy_index = i; 825 } 826 } 827 } 828 // Resolve the bootstrap specifier, its name, type, and static arguments 829 BootstrapInfo bootstrap_specifier(cp, index, indy_index); 830 Handle bsm = bootstrap_specifier.resolve_bsm(CHECK_NULL); 831 832 // call java.lang.invoke.MethodHandle::asFixedArity() -> MethodHandle 833 // to get a DirectMethodHandle from which we can then extract a Method* 834 JavaValue result(T_OBJECT); 835 JavaCalls::call_virtual(&result, 836 bsm, 837 vmClasses::MethodHandle_klass(), 838 vmSymbols::asFixedArity_name(), 839 vmSymbols::asFixedArity_signature(), 840 CHECK_NULL); 841 bsm = Handle(THREAD, result.get_oop()); 842 843 // Check assumption about getting a DirectMethodHandle 844 if (!java_lang_invoke_DirectMethodHandle::is_instance(bsm())) { 845 JVMCI_THROW_MSG_NULL(InternalError, err_msg("Unexpected MethodHandle subclass: %s", bsm->klass()->external_name())); 846 } 847 // Create return array describing the bootstrap method invocation (BSMI) 848 JVMCIObjectArray bsmi = JVMCIENV->new_Object_array(4, JVMCI_CHECK_NULL); 849 850 // Extract Method* and wrap it in a ResolvedJavaMethod 851 Handle member = Handle(THREAD, java_lang_invoke_DirectMethodHandle::member(bsm())); 852 JVMCIObject bsmi_method = JVMCIENV->get_jvmci_method(methodHandle(THREAD, java_lang_invoke_MemberName::vmtarget(member())), JVMCI_CHECK_NULL); 853 JVMCIENV->put_object_at(bsmi, 0, bsmi_method); 854 855 JVMCIObject bsmi_name = JVMCIENV->create_string(bootstrap_specifier.name(), JVMCI_CHECK_NULL); 856 JVMCIENV->put_object_at(bsmi, 1, bsmi_name); 857 858 Handle type_arg = bootstrap_specifier.type_arg(); 859 JVMCIObject bsmi_type = JVMCIENV->get_object_constant(type_arg()); 860 JVMCIENV->put_object_at(bsmi, 2, bsmi_type); 861 862 Handle arg_values = bootstrap_specifier.arg_values(); 863 if (arg_values.not_null()) { 864 if (!arg_values->is_array()) { 865 JVMCIENV->put_object_at(bsmi, 3, JVMCIENV->get_object_constant(arg_values())); 866 } else if (arg_values->is_objArray()) { 867 objArrayHandle args_array = objArrayHandle(THREAD, (objArrayOop) arg_values()); 868 int len = args_array->length(); 869 JVMCIObjectArray arguments = JVMCIENV->new_JavaConstant_array(len, JVMCI_CHECK_NULL); 870 JVMCIENV->put_object_at(bsmi, 3, arguments); 871 for (int i = 0; i < len; i++) { 872 oop x = args_array->obj_at(i); 873 if (x != nullptr) { 874 JVMCIENV->put_object_at(arguments, i, JVMCIENV->get_object_constant(x)); 875 } else { 876 JVMCIENV->put_object_at(arguments, i, JVMCIENV->get_JavaConstant_NULL_POINTER()); 877 } 878 } 879 } else if (arg_values->is_typeArray()) { 880 typeArrayHandle bsci = typeArrayHandle(THREAD, (typeArrayOop) arg_values()); 881 JVMCIPrimitiveArray arguments = JVMCIENV->new_intArray(bsci->length(), JVMCI_CHECK_NULL); 882 JVMCIENV->put_object_at(bsmi, 3, arguments); 883 for (int i = 0; i < bsci->length(); i++) { 884 JVMCIENV->put_int_at(arguments, i, bsci->int_at(i)); 885 } 886 } 887 } 888 return JVMCIENV->get_jobjectArray(bsmi); 889 C2V_END 890 891 C2V_VMENTRY_0(jint, bootstrapArgumentIndexAt, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint cpi, jint index)) 892 constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp)); 893 return cp->bootstrap_argument_index_at(cpi, index); 894 C2V_END 895 896 C2V_VMENTRY_0(jint, lookupNameAndTypeRefIndexInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint index, jint opcode)) 897 constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp)); 898 return cp->name_and_type_ref_index_at(index, (Bytecodes::Code)opcode); 899 C2V_END 900 901 C2V_VMENTRY_NULL(jobject, lookupNameInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint which, jint opcode)) 902 constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp)); 903 JVMCIObject sym = JVMCIENV->create_string(cp->name_ref_at(which, (Bytecodes::Code)opcode), JVMCI_CHECK_NULL); 904 return JVMCIENV->get_jobject(sym); 905 C2V_END 906 907 C2V_VMENTRY_NULL(jobject, lookupSignatureInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint which, jint opcode)) 908 constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp)); 909 JVMCIObject sym = JVMCIENV->create_string(cp->signature_ref_at(which, (Bytecodes::Code)opcode), JVMCI_CHECK_NULL); 910 return JVMCIENV->get_jobject(sym); 911 C2V_END 912 913 C2V_VMENTRY_0(jint, lookupKlassRefIndexInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint index, jint opcode)) 914 constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp)); 915 return cp->klass_ref_index_at(index, (Bytecodes::Code)opcode); 916 C2V_END 917 918 C2V_VMENTRY_NULL(jobject, resolveTypeInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint index)) 919 constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp)); 920 Klass* klass = cp->klass_at(index, CHECK_NULL); 921 JVMCIKlassHandle resolved_klass(THREAD, klass); 922 if (resolved_klass->is_instance_klass()) { 923 InstanceKlass::cast(resolved_klass())->link_class(CHECK_NULL); 924 if (!InstanceKlass::cast(resolved_klass())->is_linked()) { 925 // link_class() should not return here if there is an issue. 926 JVMCI_THROW_MSG_NULL(InternalError, err_msg("Class %s must be linked", resolved_klass()->external_name())); 927 } 928 } 929 JVMCIObject klassObject = JVMCIENV->get_jvmci_type(resolved_klass, JVMCI_CHECK_NULL); 930 return JVMCIENV->get_jobject(klassObject); 931 C2V_END 932 933 C2V_VMENTRY_NULL(jobject, lookupKlassInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint index)) 934 constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp)); 935 Klass* loading_klass = cp->pool_holder(); 936 bool is_accessible = false; 937 JVMCIKlassHandle klass(THREAD, JVMCIRuntime::get_klass_by_index(cp, index, is_accessible, loading_klass)); 938 Symbol* symbol = nullptr; 939 if (klass.is_null()) { 940 constantTag tag = cp->tag_at(index); 941 if (tag.is_klass()) { 942 // The klass has been inserted into the constant pool 943 // very recently. 944 klass = cp->resolved_klass_at(index); 945 } else if (tag.is_symbol()) { 946 symbol = cp->symbol_at(index); 947 } else { 948 if (!tag.is_unresolved_klass()) { 949 JVMCI_THROW_MSG_NULL(InternalError, err_msg("Expected %d at index %d, got %d", JVM_CONSTANT_UnresolvedClassInError, index, tag.value())); 950 } 951 symbol = cp->klass_name_at(index); 952 } 953 } 954 JVMCIObject result; 955 if (!klass.is_null()) { 956 result = JVMCIENV->get_jvmci_type(klass, JVMCI_CHECK_NULL); 957 } else { 958 result = JVMCIENV->create_string(symbol, JVMCI_CHECK_NULL); 959 } 960 return JVMCIENV->get_jobject(result); 961 C2V_END 962 963 C2V_VMENTRY_NULL(jobject, lookupAppendixInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint which, jint opcode)) 964 constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp)); 965 oop appendix_oop = ConstantPool::appendix_at_if_loaded(cp, which, Bytecodes::Code(opcode)); 966 return JVMCIENV->get_jobject(JVMCIENV->get_object_constant(appendix_oop)); 967 C2V_END 968 969 C2V_VMENTRY_NULL(jobject, lookupMethodInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint index, jbyte opcode, ARGUMENT_PAIR(caller))) 970 constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp)); 971 methodHandle caller(THREAD, UNPACK_PAIR(Method, caller)); 972 InstanceKlass* pool_holder = cp->pool_holder(); 973 Bytecodes::Code bc = (Bytecodes::Code) (((int) opcode) & 0xFF); 974 methodHandle method(THREAD, JVMCIRuntime::get_method_by_index(cp, index, bc, pool_holder)); 975 JFR_ONLY(if (method.not_null()) Jfr::on_resolution(caller(), method(), CHECK_NULL);) 976 JVMCIObject result = JVMCIENV->get_jvmci_method(method, JVMCI_CHECK_NULL); 977 return JVMCIENV->get_jobject(result); 978 C2V_END 979 980 C2V_VMENTRY_NULL(jobject, resolveFieldInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint index, ARGUMENT_PAIR(method), jbyte opcode, jintArray info_handle)) 981 constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp)); 982 Bytecodes::Code code = (Bytecodes::Code)(((int) opcode) & 0xFF); 983 fieldDescriptor fd; 984 methodHandle mh(THREAD, UNPACK_PAIR(Method, method)); 985 986 Bytecodes::Code bc = (Bytecodes::Code) (((int) opcode) & 0xFF); 987 int holder_index = cp->klass_ref_index_at(index, bc); 988 if (!cp->tag_at(holder_index).is_klass() && !THREAD->can_call_java()) { 989 // If the holder is not resolved in the constant pool and the current 990 // thread cannot call Java, return null. This avoids a Java call 991 // in LinkInfo to load the holder. 992 Symbol* klass_name = cp->klass_ref_at_noresolve(index, bc); 993 return nullptr; 994 } 995 996 LinkInfo link_info(cp, index, mh, code, CHECK_NULL); 997 LinkResolver::resolve_field(fd, link_info, Bytecodes::java_code(code), false, CHECK_NULL); 998 JVMCIPrimitiveArray info = JVMCIENV->wrap(info_handle); 999 if (info.is_null() || JVMCIENV->get_length(info) != 4) { 1000 JVMCI_ERROR_NULL("info must not be null and have a length of 4"); 1001 } 1002 JVMCIENV->put_int_at(info, 0, fd.access_flags().as_int()); 1003 JVMCIENV->put_int_at(info, 1, fd.offset()); 1004 JVMCIENV->put_int_at(info, 2, fd.index()); 1005 JVMCIENV->put_int_at(info, 3, fd.field_flags().as_uint()); 1006 JVMCIKlassHandle handle(THREAD, fd.field_holder()); 1007 JVMCIObject field_holder = JVMCIENV->get_jvmci_type(handle, JVMCI_CHECK_NULL); 1008 return JVMCIENV->get_jobject(field_holder); 1009 C2V_END 1010 1011 C2V_VMENTRY_0(jint, getVtableIndexForInterfaceMethod, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass), ARGUMENT_PAIR(method))) 1012 Klass* klass = UNPACK_PAIR(Klass, klass); 1013 methodHandle method(THREAD, UNPACK_PAIR(Method, method)); 1014 InstanceKlass* holder = method->method_holder(); 1015 if (klass->is_interface()) { 1016 JVMCI_THROW_MSG_0(InternalError, err_msg("Interface %s should be handled in Java code", klass->external_name())); 1017 } 1018 if (!holder->is_interface()) { 1019 JVMCI_THROW_MSG_0(InternalError, err_msg("Method %s is not held by an interface, this case should be handled in Java code", method->name_and_sig_as_C_string())); 1020 } 1021 if (!klass->is_instance_klass()) { 1022 JVMCI_THROW_MSG_0(InternalError, err_msg("Class %s must be instance klass", klass->external_name())); 1023 } 1024 if (!InstanceKlass::cast(klass)->is_linked()) { 1025 JVMCI_THROW_MSG_0(InternalError, err_msg("Class %s must be linked", klass->external_name())); 1026 } 1027 if (!klass->is_subtype_of(holder)) { 1028 JVMCI_THROW_MSG_0(InternalError, err_msg("Class %s does not implement interface %s", klass->external_name(), holder->external_name())); 1029 } 1030 return LinkResolver::vtable_index_of_interface_method(klass, method); 1031 C2V_END 1032 1033 C2V_VMENTRY_NULL(jobject, resolveMethod, (JNIEnv* env, jobject, ARGUMENT_PAIR(receiver), ARGUMENT_PAIR(method), ARGUMENT_PAIR(caller))) 1034 Klass* recv_klass = UNPACK_PAIR(Klass, receiver); 1035 Klass* caller_klass = UNPACK_PAIR(Klass, caller); 1036 methodHandle method(THREAD, UNPACK_PAIR(Method, method)); 1037 1038 Klass* resolved = method->method_holder(); 1039 Symbol* h_name = method->name(); 1040 Symbol* h_signature = method->signature(); 1041 1042 if (MethodHandles::is_signature_polymorphic_method(method())) { 1043 // Signature polymorphic methods are already resolved, JVMCI just returns null in this case. 1044 return nullptr; 1045 } 1046 1047 if (method->name() == vmSymbols::clone_name() && 1048 resolved == vmClasses::Object_klass() && 1049 recv_klass->is_array_klass()) { 1050 // Resolution of the clone method on arrays always returns Object.clone even though that method 1051 // has protected access. There's some trickery in the access checking to make this all work out 1052 // so it's necessary to pass in the array class as the resolved class to properly trigger this. 1053 // Otherwise it's impossible to resolve the array clone methods through JVMCI. See 1054 // LinkResolver::check_method_accessability for the matching logic. 1055 resolved = recv_klass; 1056 } 1057 1058 LinkInfo link_info(resolved, h_name, h_signature, caller_klass); 1059 Method* m = nullptr; 1060 // Only do exact lookup if receiver klass has been linked. Otherwise, 1061 // the vtable has not been setup, and the LinkResolver will fail. 1062 if (recv_klass->is_array_klass() || 1063 (InstanceKlass::cast(recv_klass)->is_linked() && !recv_klass->is_interface())) { 1064 if (resolved->is_interface()) { 1065 m = LinkResolver::resolve_interface_call_or_null(recv_klass, link_info); 1066 } else { 1067 m = LinkResolver::resolve_virtual_call_or_null(recv_klass, link_info); 1068 } 1069 } 1070 1071 if (m == nullptr) { 1072 // Return null if there was a problem with lookup (uninitialized class, etc.) 1073 return nullptr; 1074 } 1075 1076 JVMCIObject result = JVMCIENV->get_jvmci_method(methodHandle(THREAD, m), JVMCI_CHECK_NULL); 1077 return JVMCIENV->get_jobject(result); 1078 C2V_END 1079 1080 C2V_VMENTRY_0(jboolean, hasFinalizableSubclass,(JNIEnv* env, jobject, ARGUMENT_PAIR(klass))) 1081 Klass* klass = UNPACK_PAIR(Klass, klass); 1082 assert(klass != nullptr, "method must not be called for primitive types"); 1083 if (!klass->is_instance_klass()) { 1084 return false; 1085 } 1086 InstanceKlass* iklass = InstanceKlass::cast(klass); 1087 return Dependencies::find_finalizable_subclass(iklass) != nullptr; 1088 C2V_END 1089 1090 C2V_VMENTRY_NULL(jobject, getClassInitializer, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass))) 1091 Klass* klass = UNPACK_PAIR(Klass, klass); 1092 if (!klass->is_instance_klass()) { 1093 return nullptr; 1094 } 1095 InstanceKlass* iklass = InstanceKlass::cast(klass); 1096 methodHandle clinit(THREAD, iklass->class_initializer()); 1097 JVMCIObject result = JVMCIENV->get_jvmci_method(clinit, JVMCI_CHECK_NULL); 1098 return JVMCIENV->get_jobject(result); 1099 C2V_END 1100 1101 C2V_VMENTRY_0(jlong, getMaxCallTargetOffset, (JNIEnv* env, jobject, jlong addr)) 1102 address target_addr = (address) addr; 1103 if (target_addr != nullptr) { 1104 int64_t off_low = (int64_t)target_addr - ((int64_t)CodeCache::low_bound() + sizeof(int)); 1105 int64_t off_high = (int64_t)target_addr - ((int64_t)CodeCache::high_bound() + sizeof(int)); 1106 return MAX2(ABS(off_low), ABS(off_high)); 1107 } 1108 return -1; 1109 C2V_END 1110 1111 C2V_VMENTRY(void, setNotInlinableOrCompilable,(JNIEnv* env, jobject, ARGUMENT_PAIR(method))) 1112 methodHandle method(THREAD, UNPACK_PAIR(Method, method)); 1113 method->set_is_not_c1_compilable(); 1114 method->set_is_not_c2_compilable(); 1115 method->set_dont_inline(true); 1116 C2V_END 1117 1118 C2V_VMENTRY_0(jint, getInstallCodeFlags, (JNIEnv *env, jobject)) 1119 int flags = 0; 1120 #ifndef PRODUCT 1121 flags |= 0x0001; // VM will install block comments 1122 flags |= 0x0004; // Enable HotSpotJVMCIRuntime.Option.CodeSerializationTypeInfo if not explicitly set 1123 #endif 1124 if (JvmtiExport::can_hotswap_or_post_breakpoint()) { 1125 // VM needs to track method dependencies 1126 flags |= 0x0002; 1127 } 1128 return flags; 1129 C2V_END 1130 1131 C2V_VMENTRY_0(jint, installCode0, (JNIEnv *env, jobject, 1132 jlong compiled_code_buffer, 1133 jlong serialization_ns, 1134 bool with_type_info, 1135 jobject compiled_code, 1136 jobjectArray object_pool, 1137 jobject installed_code, 1138 jlong failed_speculations_address, 1139 jbyteArray speculations_obj)) 1140 HandleMark hm(THREAD); 1141 JNIHandleMark jni_hm(thread); 1142 1143 JVMCIObject compiled_code_handle = JVMCIENV->wrap(compiled_code); 1144 objArrayHandle object_pool_handle(thread, JVMCIENV->is_hotspot() ? (objArrayOop) JNIHandles::resolve(object_pool) : nullptr); 1145 1146 CodeBlob* cb = nullptr; 1147 JVMCIObject installed_code_handle = JVMCIENV->wrap(installed_code); 1148 JVMCIPrimitiveArray speculations_handle = JVMCIENV->wrap(speculations_obj); 1149 1150 int speculations_len = JVMCIENV->get_length(speculations_handle); 1151 char* speculations = NEW_RESOURCE_ARRAY(char, speculations_len); 1152 JVMCIENV->copy_bytes_to(speculations_handle, (jbyte*) speculations, 0, speculations_len); 1153 1154 JVMCICompiler* compiler = JVMCICompiler::instance(true, CHECK_JNI_ERR); 1155 JVMCICompiler::CodeInstallStats* stats = compiler->code_install_stats(!thread->is_Compiler_thread()); 1156 elapsedTimer *timer = stats->timer(); 1157 timer->add_nanoseconds(serialization_ns); 1158 TraceTime install_time("installCode", timer); 1159 1160 CodeInstaller installer(JVMCIENV); 1161 JVMCINMethodHandle nmethod_handle(THREAD); 1162 1163 JVMCI::CodeInstallResult result = installer.install(compiler, 1164 compiled_code_buffer, 1165 with_type_info, 1166 compiled_code_handle, 1167 object_pool_handle, 1168 cb, 1169 nmethod_handle, 1170 installed_code_handle, 1171 (FailedSpeculation**)(address) failed_speculations_address, 1172 speculations, 1173 speculations_len, 1174 JVMCI_CHECK_0); 1175 1176 if (PrintCodeCacheOnCompilation) { 1177 stringStream s; 1178 // Dump code cache into a buffer before locking the tty, 1179 { 1180 MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 1181 CodeCache::print_summary(&s, false); 1182 } 1183 ttyLocker ttyl; 1184 tty->print_raw_cr(s.freeze()); 1185 } 1186 1187 if (result != JVMCI::ok) { 1188 assert(cb == nullptr, "should be"); 1189 } else { 1190 stats->on_install(cb); 1191 if (installed_code_handle.is_non_null()) { 1192 if (cb->is_nmethod()) { 1193 assert(JVMCIENV->isa_HotSpotNmethod(installed_code_handle), "wrong type"); 1194 // Clear the link to an old nmethod first 1195 JVMCIObject nmethod_mirror = installed_code_handle; 1196 JVMCIENV->invalidate_nmethod_mirror(nmethod_mirror, true, JVMCI_CHECK_0); 1197 } else { 1198 assert(JVMCIENV->isa_InstalledCode(installed_code_handle), "wrong type"); 1199 } 1200 // Initialize the link to the new code blob 1201 JVMCIENV->initialize_installed_code(installed_code_handle, cb, JVMCI_CHECK_0); 1202 } 1203 } 1204 return result; 1205 C2V_END 1206 1207 C2V_VMENTRY(void, resetCompilationStatistics, (JNIEnv* env, jobject)) 1208 JVMCICompiler* compiler = JVMCICompiler::instance(true, CHECK); 1209 CompilerStatistics* stats = compiler->stats(); 1210 stats->_standard.reset(); 1211 stats->_osr.reset(); 1212 C2V_END 1213 1214 C2V_VMENTRY_NULL(jobject, disassembleCodeBlob, (JNIEnv* env, jobject, jobject installedCode)) 1215 HandleMark hm(THREAD); 1216 1217 if (installedCode == nullptr) { 1218 JVMCI_THROW_MSG_NULL(NullPointerException, "installedCode is null"); 1219 } 1220 1221 JVMCIObject installedCodeObject = JVMCIENV->wrap(installedCode); 1222 CodeBlob* cb = JVMCIENV->get_code_blob(installedCodeObject); 1223 if (cb == nullptr) { 1224 return nullptr; 1225 } 1226 1227 // We don't want the stringStream buffer to resize during disassembly as it 1228 // uses scoped resource memory. If a nested function called during disassembly uses 1229 // a ResourceMark and the buffer expands within the scope of the mark, 1230 // the buffer becomes garbage when that scope is exited. Experience shows that 1231 // the disassembled code is typically about 10x the code size so a fixed buffer 1232 // sized to 20x code size plus a fixed amount for header info should be sufficient. 1233 int bufferSize = cb->code_size() * 20 + 1024; 1234 char* buffer = NEW_RESOURCE_ARRAY(char, bufferSize); 1235 stringStream st(buffer, bufferSize); 1236 Disassembler::decode(cb, &st); 1237 if (st.size() <= 0) { 1238 return nullptr; 1239 } 1240 1241 JVMCIObject result = JVMCIENV->create_string(st.as_string(), JVMCI_CHECK_NULL); 1242 return JVMCIENV->get_jobject(result); 1243 C2V_END 1244 1245 C2V_VMENTRY_NULL(jobject, getStackTraceElement, (JNIEnv* env, jobject, ARGUMENT_PAIR(method), int bci)) 1246 HandleMark hm(THREAD); 1247 1248 methodHandle method(THREAD, UNPACK_PAIR(Method, method)); 1249 JVMCIObject element = JVMCIENV->new_StackTraceElement(method, bci, JVMCI_CHECK_NULL); 1250 return JVMCIENV->get_jobject(element); 1251 C2V_END 1252 1253 C2V_VMENTRY_NULL(jobject, executeHotSpotNmethod, (JNIEnv* env, jobject, jobject args, jobject hs_nmethod)) 1254 // The incoming arguments array would have to contain JavaConstants instead of regular objects 1255 // and the return value would have to be wrapped as a JavaConstant. 1256 requireInHotSpot("executeHotSpotNmethod", JVMCI_CHECK_NULL); 1257 1258 HandleMark hm(THREAD); 1259 1260 JVMCIObject nmethod_mirror = JVMCIENV->wrap(hs_nmethod); 1261 methodHandle mh; 1262 { 1263 // Reduce the scope of JVMCINMethodHandle so that it isn't alive across the Java call. Once the 1264 // nmethod has been validated and the method is fetched from the nmethod it's fine for the 1265 // nmethod to be reclaimed if necessary. 1266 JVMCINMethodHandle nmethod_handle(THREAD); 1267 nmethod* nm = JVMCIENV->get_nmethod(nmethod_mirror, nmethod_handle); 1268 if (nm == nullptr || !nm->is_in_use()) { 1269 JVMCI_THROW_NULL(InvalidInstalledCodeException); 1270 } 1271 methodHandle nmh(THREAD, nm->method()); 1272 mh = nmh; 1273 } 1274 Symbol* signature = mh->signature(); 1275 JavaCallArguments jca(mh->size_of_parameters()); 1276 1277 JavaArgumentUnboxer jap(signature, &jca, (arrayOop) JNIHandles::resolve(args), mh->is_static()); 1278 JavaValue result(jap.return_type()); 1279 jca.set_alternative_target(Handle(THREAD, JNIHandles::resolve(nmethod_mirror.as_jobject()))); 1280 JavaCalls::call(&result, mh, &jca, CHECK_NULL); 1281 1282 if (jap.return_type() == T_VOID) { 1283 return nullptr; 1284 } else if (is_reference_type(jap.return_type())) { 1285 return JNIHandles::make_local(THREAD, result.get_oop()); 1286 } else { 1287 jvalue *value = (jvalue *) result.get_value_addr(); 1288 // Narrow the value down if required (Important on big endian machines) 1289 switch (jap.return_type()) { 1290 case T_BOOLEAN: 1291 value->z = (jboolean) value->i; 1292 break; 1293 case T_BYTE: 1294 value->b = (jbyte) value->i; 1295 break; 1296 case T_CHAR: 1297 value->c = (jchar) value->i; 1298 break; 1299 case T_SHORT: 1300 value->s = (jshort) value->i; 1301 break; 1302 default: 1303 break; 1304 } 1305 JVMCIObject o = JVMCIENV->create_box(jap.return_type(), value, JVMCI_CHECK_NULL); 1306 return JVMCIENV->get_jobject(o); 1307 } 1308 C2V_END 1309 1310 C2V_VMENTRY_NULL(jlongArray, getLineNumberTable, (JNIEnv* env, jobject, ARGUMENT_PAIR(method))) 1311 Method* method = UNPACK_PAIR(Method, method); 1312 if (!method->has_linenumber_table()) { 1313 return nullptr; 1314 } 1315 u2 num_entries = 0; 1316 CompressedLineNumberReadStream streamForSize(method->compressed_linenumber_table()); 1317 while (streamForSize.read_pair()) { 1318 num_entries++; 1319 } 1320 1321 CompressedLineNumberReadStream stream(method->compressed_linenumber_table()); 1322 JVMCIPrimitiveArray result = JVMCIENV->new_longArray(2 * num_entries, JVMCI_CHECK_NULL); 1323 1324 int i = 0; 1325 jlong value; 1326 while (stream.read_pair()) { 1327 value = ((jlong) stream.bci()); 1328 JVMCIENV->put_long_at(result, i, value); 1329 value = ((jlong) stream.line()); 1330 JVMCIENV->put_long_at(result, i + 1, value); 1331 i += 2; 1332 } 1333 1334 return (jlongArray) JVMCIENV->get_jobject(result); 1335 C2V_END 1336 1337 C2V_VMENTRY_0(jlong, getLocalVariableTableStart, (JNIEnv* env, jobject, ARGUMENT_PAIR(method))) 1338 Method* method = UNPACK_PAIR(Method, method); 1339 if (!method->has_localvariable_table()) { 1340 return 0; 1341 } 1342 return (jlong) (address) method->localvariable_table_start(); 1343 C2V_END 1344 1345 C2V_VMENTRY_0(jint, getLocalVariableTableLength, (JNIEnv* env, jobject, ARGUMENT_PAIR(method))) 1346 Method* method = UNPACK_PAIR(Method, method); 1347 return method->localvariable_table_length(); 1348 C2V_END 1349 1350 static MethodData* get_profiling_method_data(const methodHandle& method, TRAPS) { 1351 MethodData* method_data = method->method_data(); 1352 if (method_data == nullptr) { 1353 method->build_profiling_method_data(method, CHECK_NULL); 1354 method_data = method->method_data(); 1355 if (method_data == nullptr) { 1356 THROW_MSG_NULL(vmSymbols::java_lang_OutOfMemoryError(), "cannot allocate MethodData") 1357 } 1358 } 1359 return method_data; 1360 } 1361 1362 C2V_VMENTRY(void, reprofile, (JNIEnv* env, jobject, ARGUMENT_PAIR(method))) 1363 methodHandle method(THREAD, UNPACK_PAIR(Method, method)); 1364 MethodCounters* mcs = method->method_counters(); 1365 if (mcs != nullptr) { 1366 mcs->clear_counters(); 1367 } 1368 NOT_PRODUCT(method->set_compiled_invocation_count(0)); 1369 1370 nmethod* code = method->code(); 1371 if (code != nullptr) { 1372 code->make_not_entrant(); 1373 } 1374 1375 MethodData* method_data = method->method_data(); 1376 if (method_data == nullptr) { 1377 method_data = get_profiling_method_data(method, CHECK); 1378 } else { 1379 method_data->initialize(); 1380 } 1381 C2V_END 1382 1383 1384 C2V_VMENTRY(void, invalidateHotSpotNmethod, (JNIEnv* env, jobject, jobject hs_nmethod, jboolean deoptimize)) 1385 JVMCIObject nmethod_mirror = JVMCIENV->wrap(hs_nmethod); 1386 JVMCIENV->invalidate_nmethod_mirror(nmethod_mirror, deoptimize, JVMCI_CHECK); 1387 C2V_END 1388 1389 C2V_VMENTRY_NULL(jlongArray, collectCounters, (JNIEnv* env, jobject)) 1390 // Returns a zero length array if counters aren't enabled 1391 JVMCIPrimitiveArray array = JVMCIENV->new_longArray(JVMCICounterSize, JVMCI_CHECK_NULL); 1392 if (JVMCICounterSize > 0) { 1393 jlong* temp_array = NEW_RESOURCE_ARRAY(jlong, JVMCICounterSize); 1394 JavaThread::collect_counters(temp_array, JVMCICounterSize); 1395 JVMCIENV->copy_longs_from(temp_array, array, 0, JVMCICounterSize); 1396 } 1397 return (jlongArray) JVMCIENV->get_jobject(array); 1398 C2V_END 1399 1400 C2V_VMENTRY_0(jint, getCountersSize, (JNIEnv* env, jobject)) 1401 return (jint) JVMCICounterSize; 1402 C2V_END 1403 1404 C2V_VMENTRY_0(jboolean, setCountersSize, (JNIEnv* env, jobject, jint new_size)) 1405 return JavaThread::resize_all_jvmci_counters(new_size); 1406 C2V_END 1407 1408 C2V_VMENTRY_0(jint, allocateCompileId, (JNIEnv* env, jobject, ARGUMENT_PAIR(method), int entry_bci)) 1409 HandleMark hm(THREAD); 1410 methodHandle method(THREAD, UNPACK_PAIR(Method, method)); 1411 if (method.is_null()) { 1412 JVMCI_THROW_0(NullPointerException); 1413 } 1414 if (entry_bci >= method->code_size() || entry_bci < -1) { 1415 JVMCI_THROW_MSG_0(IllegalArgumentException, err_msg("Unexpected bci %d", entry_bci)); 1416 } 1417 return CompileBroker::assign_compile_id_unlocked(THREAD, method, entry_bci); 1418 C2V_END 1419 1420 1421 C2V_VMENTRY_0(jboolean, isMature, (JNIEnv* env, jobject, jlong method_data_pointer)) 1422 MethodData* mdo = (MethodData*) method_data_pointer; 1423 return mdo != nullptr && mdo->is_mature(); 1424 C2V_END 1425 1426 C2V_VMENTRY_0(jboolean, hasCompiledCodeForOSR, (JNIEnv* env, jobject, ARGUMENT_PAIR(method), int entry_bci, int comp_level)) 1427 Method* method = UNPACK_PAIR(Method, method); 1428 return method->lookup_osr_nmethod_for(entry_bci, comp_level, true) != nullptr; 1429 C2V_END 1430 1431 C2V_VMENTRY_NULL(jobject, getSymbol, (JNIEnv* env, jobject, jlong symbol)) 1432 JVMCIObject sym = JVMCIENV->create_string((Symbol*)(address)symbol, JVMCI_CHECK_NULL); 1433 return JVMCIENV->get_jobject(sym); 1434 C2V_END 1435 1436 C2V_VMENTRY_NULL(jobject, getSignatureName, (JNIEnv* env, jobject, jlong klass_pointer)) 1437 Klass* klass = UNPACK_PAIR(Klass, klass); 1438 JVMCIObject signature = JVMCIENV->create_string(klass->signature_name(), JVMCI_CHECK_NULL); 1439 return JVMCIENV->get_jobject(signature); 1440 C2V_END 1441 1442 /* 1443 * Used by matches() to convert a ResolvedJavaMethod[] to an array of Method*. 1444 */ 1445 static GrowableArray<Method*>* init_resolved_methods(jobjectArray methods, JVMCIEnv* JVMCIENV) { 1446 objArrayOop methods_oop = (objArrayOop) JNIHandles::resolve(methods); 1447 GrowableArray<Method*>* resolved_methods = new GrowableArray<Method*>(methods_oop->length()); 1448 for (int i = 0; i < methods_oop->length(); i++) { 1449 oop resolved = methods_oop->obj_at(i); 1450 Method* resolved_method = nullptr; 1451 if (resolved->klass() == HotSpotJVMCI::HotSpotResolvedJavaMethodImpl::klass()) { 1452 resolved_method = HotSpotJVMCI::asMethod(JVMCIENV, resolved); 1453 } 1454 resolved_methods->append(resolved_method); 1455 } 1456 return resolved_methods; 1457 } 1458 1459 /* 1460 * Used by c2v_iterateFrames to check if `method` matches one of the ResolvedJavaMethods in the `methods` array. 1461 * The ResolvedJavaMethod[] array is converted to a Method* array that is then cached in the resolved_methods_ref in/out parameter. 1462 * In case of a match, the matching ResolvedJavaMethod is returned in matched_jvmci_method_ref. 1463 */ 1464 static bool matches(jobjectArray methods, Method* method, GrowableArray<Method*>** resolved_methods_ref, Handle* matched_jvmci_method_ref, Thread* THREAD, JVMCIEnv* JVMCIENV) { 1465 GrowableArray<Method*>* resolved_methods = *resolved_methods_ref; 1466 if (resolved_methods == nullptr) { 1467 resolved_methods = init_resolved_methods(methods, JVMCIENV); 1468 *resolved_methods_ref = resolved_methods; 1469 } 1470 assert(method != nullptr, "method should not be null"); 1471 assert(resolved_methods->length() == ((objArrayOop) JNIHandles::resolve(methods))->length(), "arrays must have the same length"); 1472 for (int i = 0; i < resolved_methods->length(); i++) { 1473 Method* m = resolved_methods->at(i); 1474 if (m == method) { 1475 *matched_jvmci_method_ref = Handle(THREAD, ((objArrayOop) JNIHandles::resolve(methods))->obj_at(i)); 1476 return true; 1477 } 1478 } 1479 return false; 1480 } 1481 1482 /* 1483 * Resolves an interface call to a concrete method handle. 1484 */ 1485 static methodHandle resolve_interface_call(Klass* spec_klass, Symbol* name, Symbol* signature, JavaCallArguments* args, TRAPS) { 1486 CallInfo callinfo; 1487 Handle receiver = args->receiver(); 1488 Klass* recvrKlass = receiver.is_null() ? (Klass*)nullptr : receiver->klass(); 1489 LinkInfo link_info(spec_klass, name, signature); 1490 LinkResolver::resolve_interface_call( 1491 callinfo, receiver, recvrKlass, link_info, true, CHECK_(methodHandle())); 1492 methodHandle method(THREAD, callinfo.selected_method()); 1493 assert(method.not_null(), "should have thrown exception"); 1494 return method; 1495 } 1496 1497 /* 1498 * Used by c2v_iterateFrames to make a new vframeStream at the given compiled frame id (stack pointer) and vframe id. 1499 */ 1500 static void resync_vframestream_to_compiled_frame(vframeStream& vfst, intptr_t* stack_pointer, int vframe_id, JavaThread* thread, TRAPS) { 1501 vfst = vframeStream(thread); 1502 while (vfst.frame_id() != stack_pointer && !vfst.at_end()) { 1503 vfst.next(); 1504 } 1505 if (vfst.frame_id() != stack_pointer) { 1506 THROW_MSG(vmSymbols::java_lang_IllegalStateException(), "stack frame not found after deopt") 1507 } 1508 if (vfst.is_interpreted_frame()) { 1509 THROW_MSG(vmSymbols::java_lang_IllegalStateException(), "compiled stack frame expected") 1510 } 1511 while (vfst.vframe_id() != vframe_id) { 1512 if (vfst.at_end()) { 1513 THROW_MSG(vmSymbols::java_lang_IllegalStateException(), "vframe not found after deopt") 1514 } 1515 vfst.next(); 1516 assert(!vfst.is_interpreted_frame(), "Wrong frame type"); 1517 } 1518 } 1519 1520 /* 1521 * Used by c2v_iterateFrames. Returns an array of any unallocated scope objects or null if none. 1522 */ 1523 static GrowableArray<ScopeValue*>* get_unallocated_objects_or_null(GrowableArray<ScopeValue*>* scope_objects) { 1524 GrowableArray<ScopeValue*>* unallocated = nullptr; 1525 for (int i = 0; i < scope_objects->length(); i++) { 1526 ObjectValue* sv = (ObjectValue*) scope_objects->at(i); 1527 if (sv->value().is_null()) { 1528 if (unallocated == nullptr) { 1529 unallocated = new GrowableArray<ScopeValue*>(scope_objects->length()); 1530 } 1531 unallocated->append(sv); 1532 } 1533 } 1534 return unallocated; 1535 } 1536 1537 C2V_VMENTRY_NULL(jobject, iterateFrames, (JNIEnv* env, jobject compilerToVM, jobjectArray initial_methods, jobjectArray match_methods, jint initialSkip, jobject visitor_handle)) 1538 1539 if (!thread->has_last_Java_frame()) { 1540 return nullptr; 1541 } 1542 Handle visitor(THREAD, JNIHandles::resolve_non_null(visitor_handle)); 1543 KeepStackGCProcessedMark keep_stack(THREAD); 1544 1545 requireInHotSpot("iterateFrames", JVMCI_CHECK_NULL); 1546 1547 HotSpotJVMCI::HotSpotStackFrameReference::klass()->initialize(CHECK_NULL); 1548 1549 vframeStream vfst(thread); 1550 jobjectArray methods = initial_methods; 1551 methodHandle visitor_method; 1552 GrowableArray<Method*>* resolved_methods = nullptr; 1553 1554 while (!vfst.at_end()) { // frame loop 1555 bool realloc_called = false; 1556 intptr_t* frame_id = vfst.frame_id(); 1557 1558 // Previous compiledVFrame of this frame; use with at_scope() to reuse scope object pool. 1559 compiledVFrame* prev_cvf = nullptr; 1560 1561 for (; !vfst.at_end() && vfst.frame_id() == frame_id; vfst.next()) { // vframe loop 1562 int frame_number = 0; 1563 Method *method = vfst.method(); 1564 int bci = vfst.bci(); 1565 1566 Handle matched_jvmci_method; 1567 if (methods == nullptr || matches(methods, method, &resolved_methods, &matched_jvmci_method, THREAD, JVMCIENV)) { 1568 if (initialSkip > 0) { 1569 initialSkip--; 1570 continue; 1571 } 1572 javaVFrame* vf; 1573 if (prev_cvf != nullptr && prev_cvf->frame_pointer()->id() == frame_id) { 1574 assert(prev_cvf->is_compiled_frame(), "expected compiled Java frame"); 1575 vf = prev_cvf->at_scope(vfst.decode_offset(), vfst.vframe_id()); 1576 } else { 1577 vf = vfst.asJavaVFrame(); 1578 } 1579 1580 StackValueCollection* locals = nullptr; 1581 typeArrayHandle localIsVirtual_h; 1582 if (vf->is_compiled_frame()) { 1583 // compiled method frame 1584 compiledVFrame* cvf = compiledVFrame::cast(vf); 1585 1586 ScopeDesc* scope = cvf->scope(); 1587 // native wrappers do not have a scope 1588 if (scope != nullptr && scope->objects() != nullptr) { 1589 prev_cvf = cvf; 1590 1591 GrowableArray<ScopeValue*>* objects = nullptr; 1592 if (!realloc_called) { 1593 objects = scope->objects(); 1594 } else { 1595 // some object might already have been re-allocated, only reallocate the non-allocated ones 1596 objects = get_unallocated_objects_or_null(scope->objects()); 1597 } 1598 1599 if (objects != nullptr) { 1600 RegisterMap reg_map(vf->register_map()); 1601 bool realloc_failures = Deoptimization::realloc_objects(thread, vf->frame_pointer(), ®_map, objects, CHECK_NULL); 1602 Deoptimization::reassign_fields(vf->frame_pointer(), ®_map, objects, realloc_failures, false, CHECK_NULL); 1603 realloc_called = true; 1604 } 1605 1606 GrowableArray<ScopeValue*>* local_values = scope->locals(); 1607 for (int i = 0; i < local_values->length(); i++) { 1608 ScopeValue* value = local_values->at(i); 1609 assert(!value->is_object_merge(), "Should not be."); 1610 if (value->is_object()) { 1611 if (localIsVirtual_h.is_null()) { 1612 typeArrayOop array_oop = oopFactory::new_boolArray(local_values->length(), CHECK_NULL); 1613 localIsVirtual_h = typeArrayHandle(THREAD, array_oop); 1614 } 1615 localIsVirtual_h->bool_at_put(i, true); 1616 } 1617 } 1618 } 1619 1620 locals = cvf->locals(); 1621 frame_number = cvf->vframe_id(); 1622 } else { 1623 // interpreted method frame 1624 interpretedVFrame* ivf = interpretedVFrame::cast(vf); 1625 1626 locals = ivf->locals(); 1627 } 1628 assert(bci == vf->bci(), "wrong bci"); 1629 assert(method == vf->method(), "wrong method"); 1630 1631 Handle frame_reference = HotSpotJVMCI::HotSpotStackFrameReference::klass()->allocate_instance_handle(CHECK_NULL); 1632 HotSpotJVMCI::HotSpotStackFrameReference::set_bci(JVMCIENV, frame_reference(), bci); 1633 if (matched_jvmci_method.is_null()) { 1634 methodHandle mh(THREAD, method); 1635 JVMCIObject jvmci_method = JVMCIENV->get_jvmci_method(mh, JVMCI_CHECK_NULL); 1636 matched_jvmci_method = Handle(THREAD, JNIHandles::resolve(jvmci_method.as_jobject())); 1637 } 1638 HotSpotJVMCI::HotSpotStackFrameReference::set_method(JVMCIENV, frame_reference(), matched_jvmci_method()); 1639 HotSpotJVMCI::HotSpotStackFrameReference::set_localIsVirtual(JVMCIENV, frame_reference(), localIsVirtual_h()); 1640 1641 HotSpotJVMCI::HotSpotStackFrameReference::set_compilerToVM(JVMCIENV, frame_reference(), JNIHandles::resolve(compilerToVM)); 1642 HotSpotJVMCI::HotSpotStackFrameReference::set_stackPointer(JVMCIENV, frame_reference(), (jlong) frame_id); 1643 HotSpotJVMCI::HotSpotStackFrameReference::set_frameNumber(JVMCIENV, frame_reference(), frame_number); 1644 1645 // initialize the locals array 1646 objArrayOop array_oop = oopFactory::new_objectArray(locals->size(), CHECK_NULL); 1647 objArrayHandle array(THREAD, array_oop); 1648 for (int i = 0; i < locals->size(); i++) { 1649 StackValue* var = locals->at(i); 1650 if (var->type() == T_OBJECT) { 1651 array->obj_at_put(i, locals->at(i)->get_obj()()); 1652 } 1653 } 1654 HotSpotJVMCI::HotSpotStackFrameReference::set_locals(JVMCIENV, frame_reference(), array()); 1655 HotSpotJVMCI::HotSpotStackFrameReference::set_objectsMaterialized(JVMCIENV, frame_reference(), JNI_FALSE); 1656 1657 JavaValue result(T_OBJECT); 1658 JavaCallArguments args(visitor); 1659 if (visitor_method.is_null()) { 1660 visitor_method = resolve_interface_call(HotSpotJVMCI::InspectedFrameVisitor::klass(), vmSymbols::visitFrame_name(), vmSymbols::visitFrame_signature(), &args, CHECK_NULL); 1661 } 1662 1663 args.push_oop(frame_reference); 1664 JavaCalls::call(&result, visitor_method, &args, CHECK_NULL); 1665 if (result.get_oop() != nullptr) { 1666 return JNIHandles::make_local(thread, result.get_oop()); 1667 } 1668 if (methods == initial_methods) { 1669 methods = match_methods; 1670 if (resolved_methods != nullptr && JNIHandles::resolve(match_methods) != JNIHandles::resolve(initial_methods)) { 1671 resolved_methods = nullptr; 1672 } 1673 } 1674 assert(initialSkip == 0, "There should be no match before initialSkip == 0"); 1675 if (HotSpotJVMCI::HotSpotStackFrameReference::objectsMaterialized(JVMCIENV, frame_reference()) == JNI_TRUE) { 1676 // the frame has been deoptimized, we need to re-synchronize the frame and vframe 1677 prev_cvf = nullptr; 1678 intptr_t* stack_pointer = (intptr_t*) HotSpotJVMCI::HotSpotStackFrameReference::stackPointer(JVMCIENV, frame_reference()); 1679 resync_vframestream_to_compiled_frame(vfst, stack_pointer, frame_number, thread, CHECK_NULL); 1680 } 1681 } 1682 } // end of vframe loop 1683 } // end of frame loop 1684 1685 // the end was reached without finding a matching method 1686 return nullptr; 1687 C2V_END 1688 1689 C2V_VMENTRY_0(int, decodeIndyIndexToCPIndex, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint indy_index, jboolean resolve)) 1690 constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp)); 1691 CallInfo callInfo; 1692 if (resolve) { 1693 LinkResolver::resolve_invoke(callInfo, Handle(), cp, indy_index, Bytecodes::_invokedynamic, CHECK_0); 1694 cp->cache()->set_dynamic_call(callInfo, indy_index); 1695 } 1696 return cp->resolved_indy_entry_at(indy_index)->constant_pool_index(); 1697 C2V_END 1698 1699 C2V_VMENTRY_0(int, decodeFieldIndexToCPIndex, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint field_index)) 1700 constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp)); 1701 if (field_index < 0 || field_index >= cp->resolved_field_entries_length()) { 1702 JVMCI_THROW_MSG_0(IllegalStateException, err_msg("invalid field index %d", field_index)); 1703 } 1704 return cp->resolved_field_entry_at(field_index)->constant_pool_index(); 1705 C2V_END 1706 1707 C2V_VMENTRY_0(int, decodeMethodIndexToCPIndex, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint method_index)) 1708 constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp)); 1709 if (method_index < 0 || method_index >= cp->resolved_method_entries_length()) { 1710 JVMCI_THROW_MSG_0(IllegalStateException, err_msg("invalid method index %d", method_index)); 1711 } 1712 return cp->resolved_method_entry_at(method_index)->constant_pool_index(); 1713 C2V_END 1714 1715 C2V_VMENTRY(void, resolveInvokeHandleInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint index)) 1716 constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp)); 1717 Klass* holder = cp->klass_ref_at(index, Bytecodes::_invokehandle, CHECK); 1718 Symbol* name = cp->name_ref_at(index, Bytecodes::_invokehandle); 1719 if (MethodHandles::is_signature_polymorphic_name(holder, name)) { 1720 CallInfo callInfo; 1721 LinkResolver::resolve_invoke(callInfo, Handle(), cp, index, Bytecodes::_invokehandle, CHECK); 1722 cp->cache()->set_method_handle(index, callInfo); 1723 } 1724 C2V_END 1725 1726 C2V_VMENTRY_0(jint, isResolvedInvokeHandleInPool, (JNIEnv* env, jobject, ARGUMENT_PAIR(cp), jint index, jint opcode)) 1727 constantPoolHandle cp(THREAD, UNPACK_PAIR(ConstantPool, cp)); 1728 ResolvedMethodEntry* entry = cp->cache()->resolved_method_entry_at(index); 1729 if (entry->is_resolved(Bytecodes::_invokehandle)) { 1730 // MethodHandle.invoke* --> LambdaForm? 1731 ResourceMark rm; 1732 1733 LinkInfo link_info(cp, index, Bytecodes::_invokehandle, CATCH); 1734 1735 Klass* resolved_klass = link_info.resolved_klass(); 1736 1737 Symbol* name_sym = cp->name_ref_at(index, Bytecodes::_invokehandle); 1738 1739 vmassert(MethodHandles::is_method_handle_invoke_name(resolved_klass, name_sym), "!"); 1740 vmassert(MethodHandles::is_signature_polymorphic_name(resolved_klass, name_sym), "!"); 1741 1742 methodHandle adapter_method(THREAD, entry->method()); 1743 1744 methodHandle resolved_method(adapter_method); 1745 1746 // Can we treat it as a regular invokevirtual? 1747 if (resolved_method->method_holder() == resolved_klass && resolved_method->name() == name_sym) { 1748 vmassert(!resolved_method->is_static(),"!"); 1749 vmassert(MethodHandles::is_signature_polymorphic_method(resolved_method()),"!"); 1750 vmassert(!MethodHandles::is_signature_polymorphic_static(resolved_method->intrinsic_id()), "!"); 1751 vmassert(cp->cache()->appendix_if_resolved(entry) == nullptr, "!"); 1752 1753 methodHandle m(THREAD, LinkResolver::linktime_resolve_virtual_method_or_null(link_info)); 1754 vmassert(m == resolved_method, "!!"); 1755 return -1; 1756 } 1757 1758 return Bytecodes::_invokevirtual; 1759 } 1760 if ((Bytecodes::Code)opcode == Bytecodes::_invokedynamic) { 1761 if (cp->resolved_indy_entry_at(index)->is_resolved()) { 1762 return Bytecodes::_invokedynamic; 1763 } 1764 } 1765 return -1; 1766 C2V_END 1767 1768 1769 C2V_VMENTRY_NULL(jobject, getSignaturePolymorphicHolders, (JNIEnv* env, jobject)) 1770 JVMCIObjectArray holders = JVMCIENV->new_String_array(2, JVMCI_CHECK_NULL); 1771 JVMCIObject mh = JVMCIENV->create_string("Ljava/lang/invoke/MethodHandle;", JVMCI_CHECK_NULL); 1772 JVMCIObject vh = JVMCIENV->create_string("Ljava/lang/invoke/VarHandle;", JVMCI_CHECK_NULL); 1773 JVMCIENV->put_object_at(holders, 0, mh); 1774 JVMCIENV->put_object_at(holders, 1, vh); 1775 return JVMCIENV->get_jobject(holders); 1776 C2V_END 1777 1778 C2V_VMENTRY_0(jboolean, shouldDebugNonSafepoints, (JNIEnv* env, jobject)) 1779 //see compute_recording_non_safepoints in debugInfroRec.cpp 1780 if (JvmtiExport::should_post_compiled_method_load() && FLAG_IS_DEFAULT(DebugNonSafepoints)) { 1781 return true; 1782 } 1783 return DebugNonSafepoints; 1784 C2V_END 1785 1786 // public native void materializeVirtualObjects(HotSpotStackFrameReference stackFrame, boolean invalidate); 1787 C2V_VMENTRY(void, materializeVirtualObjects, (JNIEnv* env, jobject, jobject _hs_frame, bool invalidate)) 1788 JVMCIObject hs_frame = JVMCIENV->wrap(_hs_frame); 1789 if (hs_frame.is_null()) { 1790 JVMCI_THROW_MSG(NullPointerException, "stack frame is null"); 1791 } 1792 1793 requireInHotSpot("materializeVirtualObjects", JVMCI_CHECK); 1794 1795 JVMCIENV->HotSpotStackFrameReference_initialize(JVMCI_CHECK); 1796 1797 // look for the given stack frame 1798 StackFrameStream fst(thread, false /* update */, true /* process_frames */); 1799 intptr_t* stack_pointer = (intptr_t*) JVMCIENV->get_HotSpotStackFrameReference_stackPointer(hs_frame); 1800 while (fst.current()->id() != stack_pointer && !fst.is_done()) { 1801 fst.next(); 1802 } 1803 if (fst.current()->id() != stack_pointer) { 1804 JVMCI_THROW_MSG(IllegalStateException, "stack frame not found"); 1805 } 1806 1807 if (invalidate) { 1808 if (!fst.current()->is_compiled_frame()) { 1809 JVMCI_THROW_MSG(IllegalStateException, "compiled stack frame expected"); 1810 } 1811 fst.current()->cb()->as_nmethod()->make_not_entrant(); 1812 } 1813 Deoptimization::deoptimize(thread, *fst.current(), Deoptimization::Reason_none); 1814 // look for the frame again as it has been updated by deopt (pc, deopt state...) 1815 StackFrameStream fstAfterDeopt(thread, true /* update */, true /* process_frames */); 1816 while (fstAfterDeopt.current()->id() != stack_pointer && !fstAfterDeopt.is_done()) { 1817 fstAfterDeopt.next(); 1818 } 1819 if (fstAfterDeopt.current()->id() != stack_pointer) { 1820 JVMCI_THROW_MSG(IllegalStateException, "stack frame not found after deopt"); 1821 } 1822 1823 vframe* vf = vframe::new_vframe(fstAfterDeopt.current(), fstAfterDeopt.register_map(), thread); 1824 if (!vf->is_compiled_frame()) { 1825 JVMCI_THROW_MSG(IllegalStateException, "compiled stack frame expected"); 1826 } 1827 1828 GrowableArray<compiledVFrame*>* virtualFrames = new GrowableArray<compiledVFrame*>(10); 1829 while (true) { 1830 assert(vf->is_compiled_frame(), "Wrong frame type"); 1831 virtualFrames->push(compiledVFrame::cast(vf)); 1832 if (vf->is_top()) { 1833 break; 1834 } 1835 vf = vf->sender(); 1836 } 1837 1838 int last_frame_number = JVMCIENV->get_HotSpotStackFrameReference_frameNumber(hs_frame); 1839 if (last_frame_number >= virtualFrames->length()) { 1840 JVMCI_THROW_MSG(IllegalStateException, "invalid frame number"); 1841 } 1842 1843 // Reallocate the non-escaping objects and restore their fields. 1844 assert (virtualFrames->at(last_frame_number)->scope() != nullptr,"invalid scope"); 1845 GrowableArray<ScopeValue*>* objects = virtualFrames->at(last_frame_number)->scope()->objects(); 1846 1847 if (objects == nullptr) { 1848 // no objects to materialize 1849 return; 1850 } 1851 1852 bool realloc_failures = Deoptimization::realloc_objects(thread, fstAfterDeopt.current(), fstAfterDeopt.register_map(), objects, CHECK); 1853 Deoptimization::reassign_fields(fstAfterDeopt.current(), fstAfterDeopt.register_map(), objects, realloc_failures, false, THREAD); 1854 1855 for (int frame_index = 0; frame_index < virtualFrames->length(); frame_index++) { 1856 compiledVFrame* cvf = virtualFrames->at(frame_index); 1857 1858 GrowableArray<ScopeValue*>* scopedValues = cvf->scope()->locals(); 1859 StackValueCollection* locals = cvf->locals(); 1860 if (locals != nullptr) { 1861 for (int i2 = 0; i2 < locals->size(); i2++) { 1862 StackValue* var = locals->at(i2); 1863 assert(!scopedValues->at(i2)->is_object_merge(), "Should not be."); 1864 if (var->type() == T_OBJECT && scopedValues->at(i2)->is_object()) { 1865 jvalue val; 1866 val.l = cast_from_oop<jobject>(locals->at(i2)->get_obj()()); 1867 cvf->update_local(T_OBJECT, i2, val); 1868 } 1869 } 1870 } 1871 1872 GrowableArray<ScopeValue*>* scopeExpressions = cvf->scope()->expressions(); 1873 StackValueCollection* expressions = cvf->expressions(); 1874 if (expressions != nullptr) { 1875 for (int i2 = 0; i2 < expressions->size(); i2++) { 1876 StackValue* var = expressions->at(i2); 1877 assert(!scopeExpressions->at(i2)->is_object_merge(), "Should not be."); 1878 if (var->type() == T_OBJECT && scopeExpressions->at(i2)->is_object()) { 1879 jvalue val; 1880 val.l = cast_from_oop<jobject>(expressions->at(i2)->get_obj()()); 1881 cvf->update_stack(T_OBJECT, i2, val); 1882 } 1883 } 1884 } 1885 1886 GrowableArray<MonitorValue*>* scopeMonitors = cvf->scope()->monitors(); 1887 GrowableArray<MonitorInfo*>* monitors = cvf->monitors(); 1888 if (monitors != nullptr) { 1889 for (int i2 = 0; i2 < monitors->length(); i2++) { 1890 cvf->update_monitor(i2, monitors->at(i2)); 1891 } 1892 } 1893 } 1894 1895 // all locals are materialized by now 1896 JVMCIENV->set_HotSpotStackFrameReference_localIsVirtual(hs_frame, nullptr); 1897 // update the locals array 1898 JVMCIObjectArray array = JVMCIENV->get_HotSpotStackFrameReference_locals(hs_frame); 1899 StackValueCollection* locals = virtualFrames->at(last_frame_number)->locals(); 1900 for (int i = 0; i < locals->size(); i++) { 1901 StackValue* var = locals->at(i); 1902 if (var->type() == T_OBJECT) { 1903 JVMCIENV->put_object_at(array, i, HotSpotJVMCI::wrap(locals->at(i)->get_obj()())); 1904 } 1905 } 1906 HotSpotJVMCI::HotSpotStackFrameReference::set_objectsMaterialized(JVMCIENV, hs_frame, JNI_TRUE); 1907 C2V_END 1908 1909 // Use of tty does not require the current thread to be attached to the VM 1910 // so no need for a full C2V_VMENTRY transition. 1911 C2V_VMENTRY_PREFIX(void, writeDebugOutput, (JNIEnv* env, jobject, jlong buffer, jint length, bool flush)) 1912 if (length <= 8) { 1913 tty->write((char*) &buffer, length); 1914 } else { 1915 tty->write((char*) buffer, length); 1916 } 1917 if (flush) { 1918 tty->flush(); 1919 } 1920 C2V_END 1921 1922 // Use of tty does not require the current thread to be attached to the VM 1923 // so no need for a full C2V_VMENTRY transition. 1924 C2V_VMENTRY_PREFIX(void, flushDebugOutput, (JNIEnv* env, jobject)) 1925 tty->flush(); 1926 C2V_END 1927 1928 C2V_VMENTRY_0(jint, methodDataProfileDataSize, (JNIEnv* env, jobject, jlong method_data_pointer, jint position)) 1929 MethodData* mdo = (MethodData*) method_data_pointer; 1930 ProfileData* profile_data = mdo->data_at(position); 1931 if (mdo->is_valid(profile_data)) { 1932 return profile_data->size_in_bytes(); 1933 } 1934 // Java code should never directly access the extra data section 1935 JVMCI_THROW_MSG_0(IllegalArgumentException, err_msg("Invalid profile data position %d", position)); 1936 C2V_END 1937 1938 C2V_VMENTRY_0(jint, methodDataExceptionSeen, (JNIEnv* env, jobject, jlong method_data_pointer, jint bci)) 1939 MethodData* mdo = (MethodData*) method_data_pointer; 1940 1941 // Lock to read ProfileData, and ensure lock is not broken by a safepoint 1942 MutexLocker mu(mdo->extra_data_lock(), Mutex::_no_safepoint_check_flag); 1943 1944 DataLayout* data = mdo->extra_data_base(); 1945 DataLayout* end = mdo->args_data_limit(); 1946 for (;; data = mdo->next_extra(data)) { 1947 assert(data < end, "moved past end of extra data"); 1948 int tag = data->tag(); 1949 switch(tag) { 1950 case DataLayout::bit_data_tag: { 1951 BitData* bit_data = (BitData*) data->data_in(); 1952 if (bit_data->bci() == bci) { 1953 return bit_data->exception_seen() ? 1 : 0; 1954 } 1955 break; 1956 } 1957 case DataLayout::no_tag: 1958 // There is a free slot so return false since a BitData would have been allocated to record 1959 // true if it had been seen. 1960 return 0; 1961 case DataLayout::arg_info_data_tag: 1962 // The bci wasn't found and there are no free slots to record a trap for this location, so always 1963 // return unknown. 1964 return -1; 1965 } 1966 } 1967 ShouldNotReachHere(); 1968 return -1; 1969 C2V_END 1970 1971 C2V_VMENTRY_NULL(jobject, getInterfaces, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass))) 1972 Klass* klass = UNPACK_PAIR(Klass, klass); 1973 if (klass == nullptr) { 1974 JVMCI_THROW_NULL(NullPointerException); 1975 } 1976 1977 if (!klass->is_instance_klass()) { 1978 JVMCI_THROW_MSG_NULL(InternalError, err_msg("Class %s must be instance klass", klass->external_name())); 1979 } 1980 InstanceKlass* iklass = InstanceKlass::cast(klass); 1981 1982 // Regular instance klass, fill in all local interfaces 1983 int size = iklass->local_interfaces()->length(); 1984 JVMCIObjectArray interfaces = JVMCIENV->new_HotSpotResolvedObjectTypeImpl_array(size, JVMCI_CHECK_NULL); 1985 for (int index = 0; index < size; index++) { 1986 JVMCIKlassHandle klass(THREAD); 1987 Klass* k = iklass->local_interfaces()->at(index); 1988 klass = k; 1989 JVMCIObject type = JVMCIENV->get_jvmci_type(klass, JVMCI_CHECK_NULL); 1990 JVMCIENV->put_object_at(interfaces, index, type); 1991 } 1992 return JVMCIENV->get_jobject(interfaces); 1993 C2V_END 1994 1995 C2V_VMENTRY_NULL(jobject, getComponentType, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass))) 1996 Klass* klass = UNPACK_PAIR(Klass, klass); 1997 if (klass == nullptr) { 1998 JVMCI_THROW_NULL(NullPointerException); 1999 } 2000 2001 if (!klass->is_array_klass()) { 2002 return nullptr; 2003 } 2004 oop mirror = klass->java_mirror(); 2005 oop component_mirror = java_lang_Class::component_mirror(mirror); 2006 if (component_mirror == nullptr) { 2007 JVMCI_THROW_MSG_NULL(NullPointerException, 2008 err_msg("Component mirror for array class %s is null", klass->external_name())) 2009 } 2010 2011 Klass* component_klass = java_lang_Class::as_Klass(component_mirror); 2012 if (component_klass != nullptr) { 2013 JVMCIKlassHandle klass_handle(THREAD, component_klass); 2014 JVMCIObject result = JVMCIENV->get_jvmci_type(klass_handle, JVMCI_CHECK_NULL); 2015 return JVMCIENV->get_jobject(result); 2016 } 2017 BasicType type = java_lang_Class::primitive_type(component_mirror); 2018 JVMCIObject result = JVMCIENV->get_jvmci_primitive_type(type); 2019 return JVMCIENV->get_jobject(result); 2020 C2V_END 2021 2022 C2V_VMENTRY(void, ensureInitialized, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass))) 2023 Klass* klass = UNPACK_PAIR(Klass, klass); 2024 if (klass == nullptr) { 2025 JVMCI_THROW(NullPointerException); 2026 } 2027 if (klass->should_be_initialized()) { 2028 InstanceKlass* k = InstanceKlass::cast(klass); 2029 k->initialize(CHECK); 2030 } 2031 C2V_END 2032 2033 C2V_VMENTRY(void, ensureLinked, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass))) 2034 CompilerThreadCanCallJava canCallJava(thread, true); // Linking requires Java calls 2035 Klass* klass = UNPACK_PAIR(Klass, klass); 2036 if (klass == nullptr) { 2037 JVMCI_THROW(NullPointerException); 2038 } 2039 if (klass->is_instance_klass()) { 2040 InstanceKlass* k = InstanceKlass::cast(klass); 2041 k->link_class(CHECK); 2042 } 2043 C2V_END 2044 2045 C2V_VMENTRY_0(jint, interpreterFrameSize, (JNIEnv* env, jobject, jobject bytecode_frame_handle)) 2046 if (bytecode_frame_handle == nullptr) { 2047 JVMCI_THROW_0(NullPointerException); 2048 } 2049 2050 JVMCIObject top_bytecode_frame = JVMCIENV->wrap(bytecode_frame_handle); 2051 JVMCIObject bytecode_frame = top_bytecode_frame; 2052 int size = 0; 2053 int callee_parameters = 0; 2054 int callee_locals = 0; 2055 Method* method = JVMCIENV->asMethod(JVMCIENV->get_BytecodePosition_method(bytecode_frame)); 2056 int extra_args = method->max_stack() - JVMCIENV->get_BytecodeFrame_numStack(bytecode_frame); 2057 2058 while (bytecode_frame.is_non_null()) { 2059 int locks = JVMCIENV->get_BytecodeFrame_numLocks(bytecode_frame); 2060 int temps = JVMCIENV->get_BytecodeFrame_numStack(bytecode_frame); 2061 bool is_top_frame = (JVMCIENV->equals(bytecode_frame, top_bytecode_frame)); 2062 Method* method = JVMCIENV->asMethod(JVMCIENV->get_BytecodePosition_method(bytecode_frame)); 2063 2064 int frame_size = BytesPerWord * Interpreter::size_activation(method->max_stack(), 2065 temps + callee_parameters, 2066 extra_args, 2067 locks, 2068 callee_parameters, 2069 callee_locals, 2070 is_top_frame); 2071 size += frame_size; 2072 2073 callee_parameters = method->size_of_parameters(); 2074 callee_locals = method->max_locals(); 2075 extra_args = 0; 2076 bytecode_frame = JVMCIENV->get_BytecodePosition_caller(bytecode_frame); 2077 } 2078 return size + Deoptimization::last_frame_adjust(0, callee_locals) * BytesPerWord; 2079 C2V_END 2080 2081 C2V_VMENTRY(void, compileToBytecode, (JNIEnv* env, jobject, jobject lambda_form_handle)) 2082 Handle lambda_form = JVMCIENV->asConstant(JVMCIENV->wrap(lambda_form_handle), JVMCI_CHECK); 2083 if (lambda_form->is_a(vmClasses::LambdaForm_klass())) { 2084 TempNewSymbol compileToBytecode = SymbolTable::new_symbol("compileToBytecode"); 2085 JavaValue result(T_VOID); 2086 JavaCalls::call_special(&result, lambda_form, vmClasses::LambdaForm_klass(), compileToBytecode, vmSymbols::void_method_signature(), CHECK); 2087 } else { 2088 JVMCI_THROW_MSG(IllegalArgumentException, 2089 err_msg("Unexpected type: %s", lambda_form->klass()->external_name())) 2090 } 2091 C2V_END 2092 2093 C2V_VMENTRY_0(jint, getIdentityHashCode, (JNIEnv* env, jobject, jobject object)) 2094 Handle obj = JVMCIENV->asConstant(JVMCIENV->wrap(object), JVMCI_CHECK_0); 2095 return obj->identity_hash(); 2096 C2V_END 2097 2098 C2V_VMENTRY_0(jboolean, isInternedString, (JNIEnv* env, jobject, jobject object)) 2099 Handle str = JVMCIENV->asConstant(JVMCIENV->wrap(object), JVMCI_CHECK_0); 2100 if (!java_lang_String::is_instance(str())) { 2101 return false; 2102 } 2103 int len; 2104 jchar* name = java_lang_String::as_unicode_string(str(), len, CHECK_false); 2105 return (StringTable::lookup(name, len) != nullptr); 2106 C2V_END 2107 2108 2109 C2V_VMENTRY_NULL(jobject, unboxPrimitive, (JNIEnv* env, jobject, jobject object)) 2110 if (object == nullptr) { 2111 JVMCI_THROW_NULL(NullPointerException); 2112 } 2113 Handle box = JVMCIENV->asConstant(JVMCIENV->wrap(object), JVMCI_CHECK_NULL); 2114 BasicType type = java_lang_boxing_object::basic_type(box()); 2115 jvalue result; 2116 if (java_lang_boxing_object::get_value(box(), &result) == T_ILLEGAL) { 2117 return nullptr; 2118 } 2119 JVMCIObject boxResult = JVMCIENV->create_box(type, &result, JVMCI_CHECK_NULL); 2120 return JVMCIENV->get_jobject(boxResult); 2121 C2V_END 2122 2123 C2V_VMENTRY_NULL(jobject, boxPrimitive, (JNIEnv* env, jobject, jobject object)) 2124 if (object == nullptr) { 2125 JVMCI_THROW_NULL(NullPointerException); 2126 } 2127 JVMCIObject box = JVMCIENV->wrap(object); 2128 BasicType type = JVMCIENV->get_box_type(box); 2129 if (type == T_ILLEGAL) { 2130 return nullptr; 2131 } 2132 jvalue value = JVMCIENV->get_boxed_value(type, box); 2133 JavaValue box_result(T_OBJECT); 2134 JavaCallArguments jargs; 2135 Klass* box_klass = nullptr; 2136 Symbol* box_signature = nullptr; 2137 #define BOX_CASE(bt, v, argtype, name) \ 2138 case bt: \ 2139 jargs.push_##argtype(value.v); \ 2140 box_klass = vmClasses::name##_klass(); \ 2141 box_signature = vmSymbols::name##_valueOf_signature(); \ 2142 break 2143 2144 switch (type) { 2145 BOX_CASE(T_BOOLEAN, z, int, Boolean); 2146 BOX_CASE(T_BYTE, b, int, Byte); 2147 BOX_CASE(T_CHAR, c, int, Character); 2148 BOX_CASE(T_SHORT, s, int, Short); 2149 BOX_CASE(T_INT, i, int, Integer); 2150 BOX_CASE(T_LONG, j, long, Long); 2151 BOX_CASE(T_FLOAT, f, float, Float); 2152 BOX_CASE(T_DOUBLE, d, double, Double); 2153 default: 2154 ShouldNotReachHere(); 2155 } 2156 #undef BOX_CASE 2157 2158 JavaCalls::call_static(&box_result, 2159 box_klass, 2160 vmSymbols::valueOf_name(), 2161 box_signature, &jargs, CHECK_NULL); 2162 oop hotspot_box = box_result.get_oop(); 2163 JVMCIObject result = JVMCIENV->get_object_constant(hotspot_box, false); 2164 return JVMCIENV->get_jobject(result); 2165 C2V_END 2166 2167 C2V_VMENTRY_NULL(jobjectArray, getDeclaredConstructors, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass))) 2168 Klass* klass = UNPACK_PAIR(Klass, klass); 2169 if (klass == nullptr) { 2170 JVMCI_THROW_NULL(NullPointerException); 2171 } 2172 if (!klass->is_instance_klass()) { 2173 JVMCIObjectArray methods = JVMCIENV->new_ResolvedJavaMethod_array(0, JVMCI_CHECK_NULL); 2174 return JVMCIENV->get_jobjectArray(methods); 2175 } 2176 2177 InstanceKlass* iklass = InstanceKlass::cast(klass); 2178 GrowableArray<Method*> constructors_array; 2179 for (int i = 0; i < iklass->methods()->length(); i++) { 2180 Method* m = iklass->methods()->at(i); 2181 if (m->is_object_constructor()) { 2182 constructors_array.append(m); 2183 } 2184 } 2185 JVMCIObjectArray methods = JVMCIENV->new_ResolvedJavaMethod_array(constructors_array.length(), JVMCI_CHECK_NULL); 2186 for (int i = 0; i < constructors_array.length(); i++) { 2187 methodHandle ctor(THREAD, constructors_array.at(i)); 2188 JVMCIObject method = JVMCIENV->get_jvmci_method(ctor, JVMCI_CHECK_NULL); 2189 JVMCIENV->put_object_at(methods, i, method); 2190 } 2191 return JVMCIENV->get_jobjectArray(methods); 2192 C2V_END 2193 2194 C2V_VMENTRY_NULL(jobjectArray, getDeclaredMethods, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass))) 2195 Klass* klass = UNPACK_PAIR(Klass, klass); 2196 if (klass == nullptr) { 2197 JVMCI_THROW_NULL(NullPointerException); 2198 } 2199 if (!klass->is_instance_klass()) { 2200 JVMCIObjectArray methods = JVMCIENV->new_ResolvedJavaMethod_array(0, JVMCI_CHECK_NULL); 2201 return JVMCIENV->get_jobjectArray(methods); 2202 } 2203 2204 InstanceKlass* iklass = InstanceKlass::cast(klass); 2205 GrowableArray<Method*> methods_array; 2206 for (int i = 0; i < iklass->methods()->length(); i++) { 2207 Method* m = iklass->methods()->at(i); 2208 if (!(m->is_object_constructor() || m->is_class_initializer()) && !m->is_overpass()) { 2209 methods_array.append(m); 2210 } 2211 } 2212 JVMCIObjectArray methods = JVMCIENV->new_ResolvedJavaMethod_array(methods_array.length(), JVMCI_CHECK_NULL); 2213 for (int i = 0; i < methods_array.length(); i++) { 2214 methodHandle mh(THREAD, methods_array.at(i)); 2215 JVMCIObject method = JVMCIENV->get_jvmci_method(mh, JVMCI_CHECK_NULL); 2216 JVMCIENV->put_object_at(methods, i, method); 2217 } 2218 return JVMCIENV->get_jobjectArray(methods); 2219 C2V_END 2220 2221 C2V_VMENTRY_NULL(jobjectArray, getDeclaredFieldsInfo, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass))) 2222 Klass* klass = UNPACK_PAIR(Klass, klass); 2223 if (klass == nullptr) { 2224 JVMCI_THROW_NULL(NullPointerException); 2225 } 2226 if (!klass->is_instance_klass()) { 2227 JVMCI_THROW_MSG_NULL(IllegalArgumentException, "not an InstanceKlass"); 2228 } 2229 InstanceKlass* iklass = InstanceKlass::cast(klass); 2230 int java_fields, injected_fields; 2231 GrowableArray<FieldInfo>* fields = FieldInfoStream::create_FieldInfoArray(iklass->fieldinfo_stream(), &java_fields, &injected_fields); 2232 JVMCIObjectArray array = JVMCIENV->new_FieldInfo_array(fields->length(), JVMCIENV); 2233 for (int i = 0; i < fields->length(); i++) { 2234 JVMCIObject field_info = JVMCIENV->new_FieldInfo(fields->adr_at(i), JVMCI_CHECK_NULL); 2235 JVMCIENV->put_object_at(array, i, field_info); 2236 } 2237 return array.as_jobject(); 2238 C2V_END 2239 2240 static jobject read_field_value(Handle obj, long displacement, jchar type_char, bool is_static, Thread* THREAD, JVMCIEnv* JVMCIENV) { 2241 2242 BasicType basic_type = JVMCIENV->typeCharToBasicType(type_char, JVMCI_CHECK_NULL); 2243 int basic_type_elemsize = type2aelembytes(basic_type); 2244 if (displacement < 0 || ((size_t) displacement + basic_type_elemsize > HeapWordSize * obj->size())) { 2245 // Reading outside of the object bounds 2246 JVMCI_THROW_MSG_NULL(IllegalArgumentException, "reading outside object bounds"); 2247 } 2248 2249 // Perform basic sanity checks on the read. Primitive reads are permitted to read outside the 2250 // bounds of their fields but object reads must map exactly onto the underlying oop slot. 2251 bool aligned = (displacement % basic_type_elemsize) == 0; 2252 if (!aligned) { 2253 JVMCI_THROW_MSG_NULL(IllegalArgumentException, "read is unaligned"); 2254 } 2255 if (basic_type == T_OBJECT) { 2256 if (obj->is_objArray()) { 2257 if (displacement < arrayOopDesc::base_offset_in_bytes(T_OBJECT)) { 2258 JVMCI_THROW_MSG_NULL(IllegalArgumentException, "reading from array header"); 2259 } 2260 if (displacement + heapOopSize > arrayOopDesc::base_offset_in_bytes(T_OBJECT) + arrayOop(obj())->length() * heapOopSize) { 2261 JVMCI_THROW_MSG_NULL(IllegalArgumentException, "reading after last array element"); 2262 } 2263 if (((displacement - arrayOopDesc::base_offset_in_bytes(T_OBJECT)) % heapOopSize) != 0) { 2264 JVMCI_THROW_MSG_NULL(IllegalArgumentException, "misaligned object read from array"); 2265 } 2266 } else if (obj->is_instance()) { 2267 InstanceKlass* klass = InstanceKlass::cast(is_static ? java_lang_Class::as_Klass(obj()) : obj->klass()); 2268 fieldDescriptor fd; 2269 if (!klass->find_field_from_offset(displacement, is_static, &fd)) { 2270 JVMCI_THROW_MSG_NULL(IllegalArgumentException, err_msg("Can't find field at displacement %d in object of type %s", (int) displacement, klass->external_name())); 2271 } 2272 if (fd.field_type() != T_OBJECT && fd.field_type() != T_ARRAY) { 2273 JVMCI_THROW_MSG_NULL(IllegalArgumentException, err_msg("Field at displacement %d in object of type %s is %s but expected %s", (int) displacement, 2274 klass->external_name(), type2name(fd.field_type()), type2name(basic_type))); 2275 } 2276 } else if (obj->is_typeArray()) { 2277 JVMCI_THROW_MSG_NULL(IllegalArgumentException, "Can't read objects from primitive array"); 2278 } else { 2279 ShouldNotReachHere(); 2280 } 2281 } else { 2282 if (obj->is_objArray()) { 2283 JVMCI_THROW_MSG_NULL(IllegalArgumentException, "Reading primitive from object array"); 2284 } else if (obj->is_typeArray()) { 2285 if (displacement < arrayOopDesc::base_offset_in_bytes(ArrayKlass::cast(obj->klass())->element_type())) { 2286 JVMCI_THROW_MSG_NULL(IllegalArgumentException, "reading from array header"); 2287 } 2288 } 2289 } 2290 2291 jlong value = 0; 2292 2293 // Treat all reads as volatile for simplicity as this function can be used 2294 // both for reading Java fields declared as volatile as well as for constant 2295 // folding Unsafe.get* methods with volatile semantics. 2296 2297 switch (basic_type) { 2298 case T_BOOLEAN: value = HeapAccess<MO_SEQ_CST>::load(obj->field_addr<jboolean>(displacement)); break; 2299 case T_BYTE: value = HeapAccess<MO_SEQ_CST>::load(obj->field_addr<jbyte>(displacement)); break; 2300 case T_SHORT: value = HeapAccess<MO_SEQ_CST>::load(obj->field_addr<jshort>(displacement)); break; 2301 case T_CHAR: value = HeapAccess<MO_SEQ_CST>::load(obj->field_addr<jchar>(displacement)); break; 2302 case T_FLOAT: 2303 case T_INT: value = HeapAccess<MO_SEQ_CST>::load(obj->field_addr<jint>(displacement)); break; 2304 case T_DOUBLE: 2305 case T_LONG: value = HeapAccess<MO_SEQ_CST>::load(obj->field_addr<jlong>(displacement)); break; 2306 2307 case T_OBJECT: { 2308 if (displacement == java_lang_Class::component_mirror_offset() && java_lang_Class::is_instance(obj()) && 2309 (java_lang_Class::as_Klass(obj()) == nullptr || !java_lang_Class::as_Klass(obj())->is_array_klass())) { 2310 // Class.componentType for non-array classes can transiently contain an int[] that's 2311 // used for locking so always return null to mimic Class.getComponentType() 2312 return JVMCIENV->get_jobject(JVMCIENV->get_JavaConstant_NULL_POINTER()); 2313 } 2314 2315 // Perform the read including any barriers required to make the reference strongly reachable 2316 // since it will be wrapped as a JavaConstant. 2317 oop value = obj->obj_field_access<MO_SEQ_CST | ON_UNKNOWN_OOP_REF>(displacement); 2318 2319 if (value == nullptr) { 2320 return JVMCIENV->get_jobject(JVMCIENV->get_JavaConstant_NULL_POINTER()); 2321 } else { 2322 if (value != nullptr && !oopDesc::is_oop(value)) { 2323 // Throw an exception to improve debuggability. This check isn't totally reliable because 2324 // is_oop doesn't try to be completety safe but for most invalid values it provides a good 2325 // enough answer. It possible to crash in the is_oop call but that just means the crash happens 2326 // closer to where things went wrong. 2327 JVMCI_THROW_MSG_NULL(InternalError, err_msg("Read bad oop " INTPTR_FORMAT " at offset " JLONG_FORMAT " in object " INTPTR_FORMAT " of type %s", 2328 p2i(value), displacement, p2i(obj()), obj->klass()->external_name())); 2329 } 2330 2331 JVMCIObject result = JVMCIENV->get_object_constant(value); 2332 return JVMCIENV->get_jobject(result); 2333 } 2334 } 2335 2336 default: 2337 ShouldNotReachHere(); 2338 } 2339 JVMCIObject result = JVMCIENV->call_JavaConstant_forPrimitive(type_char, value, JVMCI_CHECK_NULL); 2340 return JVMCIENV->get_jobject(result); 2341 } 2342 2343 C2V_VMENTRY_NULL(jobject, readStaticFieldValue, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass), long displacement, jchar type_char)) 2344 Klass* klass = UNPACK_PAIR(Klass, klass); 2345 Handle obj(THREAD, klass->java_mirror()); 2346 return read_field_value(obj, displacement, type_char, true, THREAD, JVMCIENV); 2347 C2V_END 2348 2349 C2V_VMENTRY_NULL(jobject, readFieldValue, (JNIEnv* env, jobject, jobject object, ARGUMENT_PAIR(expected_type), long displacement, jchar type_char)) 2350 if (object == nullptr) { 2351 JVMCI_THROW_NULL(NullPointerException); 2352 } 2353 2354 // asConstant will throw an NPE if a constant contains null 2355 Handle obj = JVMCIENV->asConstant(JVMCIENV->wrap(object), JVMCI_CHECK_NULL); 2356 2357 Klass* expected_klass = UNPACK_PAIR(Klass, expected_type); 2358 if (expected_klass != nullptr) { 2359 InstanceKlass* expected_iklass = InstanceKlass::cast(expected_klass); 2360 if (!obj->is_a(expected_iklass)) { 2361 // Not of the expected type 2362 return nullptr; 2363 } 2364 } 2365 bool is_static = expected_klass == nullptr && java_lang_Class::is_instance(obj()) && displacement >= InstanceMirrorKlass::offset_of_static_fields(); 2366 return read_field_value(obj, displacement, type_char, is_static, THREAD, JVMCIENV); 2367 C2V_END 2368 2369 C2V_VMENTRY_0(jboolean, isInstance, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass), jobject object)) 2370 Klass* klass = UNPACK_PAIR(Klass, klass); 2371 if (object == nullptr || klass == nullptr) { 2372 JVMCI_THROW_0(NullPointerException); 2373 } 2374 Handle obj = JVMCIENV->asConstant(JVMCIENV->wrap(object), JVMCI_CHECK_0); 2375 return obj->is_a(klass); 2376 C2V_END 2377 2378 C2V_VMENTRY_0(jboolean, isAssignableFrom, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass), ARGUMENT_PAIR(subklass))) 2379 Klass* klass = UNPACK_PAIR(Klass, klass); 2380 Klass* subklass = UNPACK_PAIR(Klass, subklass); 2381 if (klass == nullptr || subklass == nullptr) { 2382 JVMCI_THROW_0(NullPointerException); 2383 } 2384 return subklass->is_subtype_of(klass); 2385 C2V_END 2386 2387 C2V_VMENTRY_0(jboolean, isTrustedForIntrinsics, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass))) 2388 Klass* klass = UNPACK_PAIR(Klass, klass); 2389 if (klass == nullptr) { 2390 JVMCI_THROW_0(NullPointerException); 2391 } 2392 InstanceKlass* ik = InstanceKlass::cast(klass); 2393 if (ik->class_loader_data()->is_boot_class_loader_data() || ik->class_loader_data()->is_platform_class_loader_data()) { 2394 return true; 2395 } 2396 return false; 2397 C2V_END 2398 2399 C2V_VMENTRY_NULL(jobject, asJavaType, (JNIEnv* env, jobject, jobject object)) 2400 if (object == nullptr) { 2401 JVMCI_THROW_NULL(NullPointerException); 2402 } 2403 Handle obj = JVMCIENV->asConstant(JVMCIENV->wrap(object), JVMCI_CHECK_NULL); 2404 if (java_lang_Class::is_instance(obj())) { 2405 if (java_lang_Class::is_primitive(obj())) { 2406 JVMCIObject type = JVMCIENV->get_jvmci_primitive_type(java_lang_Class::primitive_type(obj())); 2407 return JVMCIENV->get_jobject(type); 2408 } 2409 Klass* klass = java_lang_Class::as_Klass(obj()); 2410 JVMCIKlassHandle klass_handle(THREAD); 2411 klass_handle = klass; 2412 JVMCIObject type = JVMCIENV->get_jvmci_type(klass_handle, JVMCI_CHECK_NULL); 2413 return JVMCIENV->get_jobject(type); 2414 } 2415 return nullptr; 2416 C2V_END 2417 2418 2419 C2V_VMENTRY_NULL(jobject, asString, (JNIEnv* env, jobject, jobject object)) 2420 if (object == nullptr) { 2421 JVMCI_THROW_NULL(NullPointerException); 2422 } 2423 Handle obj = JVMCIENV->asConstant(JVMCIENV->wrap(object), JVMCI_CHECK_NULL); 2424 const char* str = java_lang_String::as_utf8_string(obj()); 2425 JVMCIObject result = JVMCIENV->create_string(str, JVMCI_CHECK_NULL); 2426 return JVMCIENV->get_jobject(result); 2427 C2V_END 2428 2429 2430 C2V_VMENTRY_0(jboolean, equals, (JNIEnv* env, jobject, jobject x, jlong xHandle, jobject y, jlong yHandle)) 2431 if (x == nullptr || y == nullptr) { 2432 JVMCI_THROW_0(NullPointerException); 2433 } 2434 return JVMCIENV->resolve_oop_handle(xHandle) == JVMCIENV->resolve_oop_handle(yHandle); 2435 C2V_END 2436 2437 C2V_VMENTRY_NULL(jobject, getJavaMirror, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass))) 2438 Klass* klass = UNPACK_PAIR(Klass, klass); 2439 if (klass == nullptr) { 2440 JVMCI_THROW_NULL(NullPointerException); 2441 } 2442 Handle mirror(THREAD, klass->java_mirror()); 2443 JVMCIObject result = JVMCIENV->get_object_constant(mirror()); 2444 return JVMCIENV->get_jobject(result); 2445 C2V_END 2446 2447 2448 C2V_VMENTRY_0(jint, getArrayLength, (JNIEnv* env, jobject, jobject x)) 2449 if (x == nullptr) { 2450 JVMCI_THROW_0(NullPointerException); 2451 } 2452 Handle xobj = JVMCIENV->asConstant(JVMCIENV->wrap(x), JVMCI_CHECK_0); 2453 if (xobj->klass()->is_array_klass()) { 2454 return arrayOop(xobj())->length(); 2455 } 2456 return -1; 2457 C2V_END 2458 2459 2460 C2V_VMENTRY_NULL(jobject, readArrayElement, (JNIEnv* env, jobject, jobject x, int index)) 2461 if (x == nullptr) { 2462 JVMCI_THROW_NULL(NullPointerException); 2463 } 2464 Handle xobj = JVMCIENV->asConstant(JVMCIENV->wrap(x), JVMCI_CHECK_NULL); 2465 if (xobj->klass()->is_array_klass()) { 2466 arrayOop array = arrayOop(xobj()); 2467 BasicType element_type = ArrayKlass::cast(array->klass())->element_type(); 2468 if (index < 0 || index >= array->length()) { 2469 return nullptr; 2470 } 2471 JVMCIObject result; 2472 2473 if (element_type == T_OBJECT) { 2474 result = JVMCIENV->get_object_constant(objArrayOop(xobj())->obj_at(index)); 2475 if (result.is_null()) { 2476 result = JVMCIENV->get_JavaConstant_NULL_POINTER(); 2477 } 2478 } else { 2479 jvalue value; 2480 switch (element_type) { 2481 case T_DOUBLE: value.d = typeArrayOop(xobj())->double_at(index); break; 2482 case T_FLOAT: value.f = typeArrayOop(xobj())->float_at(index); break; 2483 case T_LONG: value.j = typeArrayOop(xobj())->long_at(index); break; 2484 case T_INT: value.i = typeArrayOop(xobj())->int_at(index); break; 2485 case T_SHORT: value.s = typeArrayOop(xobj())->short_at(index); break; 2486 case T_CHAR: value.c = typeArrayOop(xobj())->char_at(index); break; 2487 case T_BYTE: value.b = typeArrayOop(xobj())->byte_at(index); break; 2488 case T_BOOLEAN: value.z = typeArrayOop(xobj())->byte_at(index) & 1; break; 2489 default: ShouldNotReachHere(); 2490 } 2491 result = JVMCIENV->create_box(element_type, &value, JVMCI_CHECK_NULL); 2492 } 2493 assert(!result.is_null(), "must have a value"); 2494 return JVMCIENV->get_jobject(result); 2495 } 2496 return nullptr;; 2497 C2V_END 2498 2499 2500 C2V_VMENTRY_0(jint, arrayBaseOffset, (JNIEnv* env, jobject, jchar type_char)) 2501 BasicType type = JVMCIENV->typeCharToBasicType(type_char, JVMCI_CHECK_0); 2502 return arrayOopDesc::base_offset_in_bytes(type); 2503 C2V_END 2504 2505 C2V_VMENTRY_0(jint, arrayIndexScale, (JNIEnv* env, jobject, jchar type_char)) 2506 BasicType type = JVMCIENV->typeCharToBasicType(type_char, JVMCI_CHECK_0); 2507 return type2aelembytes(type); 2508 C2V_END 2509 2510 C2V_VMENTRY(void, clearOopHandle, (JNIEnv* env, jobject, jlong oop_handle)) 2511 if (oop_handle == 0L) { 2512 JVMCI_THROW(NullPointerException); 2513 } 2514 // Assert before nulling out, for better debugging. 2515 assert(JVMCIRuntime::is_oop_handle(oop_handle), "precondition"); 2516 oop* oop_ptr = (oop*) oop_handle; 2517 NativeAccess<>::oop_store(oop_ptr, (oop) nullptr); 2518 C2V_END 2519 2520 C2V_VMENTRY(void, releaseClearedOopHandles, (JNIEnv* env, jobject)) 2521 JVMCIENV->runtime()->release_cleared_oop_handles(); 2522 C2V_END 2523 2524 static void requireJVMCINativeLibrary(JVMCI_TRAPS) { 2525 if (!UseJVMCINativeLibrary) { 2526 JVMCI_THROW_MSG(UnsupportedOperationException, "JVMCI shared library is not enabled (requires -XX:+UseJVMCINativeLibrary)"); 2527 } 2528 } 2529 2530 C2V_VMENTRY_NULL(jlongArray, registerNativeMethods, (JNIEnv* env, jobject, jclass mirror)) 2531 requireJVMCINativeLibrary(JVMCI_CHECK_NULL); 2532 requireInHotSpot("registerNativeMethods", JVMCI_CHECK_NULL); 2533 char* sl_path; 2534 void* sl_handle; 2535 JVMCIRuntime* runtime; 2536 { 2537 // Ensure the JVMCI shared library runtime is initialized. 2538 PEER_JVMCIENV_FROM_THREAD(THREAD, false); 2539 PEER_JVMCIENV->check_init(JVMCI_CHECK_NULL); 2540 2541 HandleMark hm(THREAD); 2542 runtime = JVMCI::compiler_runtime(thread); 2543 if (PEER_JVMCIENV->has_pending_exception()) { 2544 PEER_JVMCIENV->describe_pending_exception(tty); 2545 } 2546 sl_handle = JVMCI::get_shared_library(sl_path, false); 2547 if (sl_handle == nullptr) { 2548 JVMCI_THROW_MSG_NULL(InternalError, err_msg("Error initializing JVMCI runtime %d", runtime->id())); 2549 } 2550 } 2551 2552 if (mirror == nullptr) { 2553 JVMCI_THROW_NULL(NullPointerException); 2554 } 2555 Klass* klass = java_lang_Class::as_Klass(JNIHandles::resolve(mirror)); 2556 if (klass == nullptr || !klass->is_instance_klass()) { 2557 JVMCI_THROW_MSG_NULL(IllegalArgumentException, "clazz is for primitive type"); 2558 } 2559 2560 InstanceKlass* iklass = InstanceKlass::cast(klass); 2561 for (int i = 0; i < iklass->methods()->length(); i++) { 2562 methodHandle method(THREAD, iklass->methods()->at(i)); 2563 if (method->is_native()) { 2564 2565 // Compute argument size 2566 int args_size = 1 // JNIEnv 2567 + (method->is_static() ? 1 : 0) // class for static methods 2568 + method->size_of_parameters(); // actual parameters 2569 2570 // 1) Try JNI short style 2571 stringStream st; 2572 char* pure_name = NativeLookup::pure_jni_name(method); 2573 guarantee(pure_name != nullptr, "Illegal native method name encountered"); 2574 os::print_jni_name_prefix_on(&st, args_size); 2575 st.print_raw(pure_name); 2576 os::print_jni_name_suffix_on(&st, args_size); 2577 char* jni_name = st.as_string(); 2578 2579 address entry = (address) os::dll_lookup(sl_handle, jni_name); 2580 if (entry == nullptr) { 2581 // 2) Try JNI long style 2582 st.reset(); 2583 char* long_name = NativeLookup::long_jni_name(method); 2584 guarantee(long_name != nullptr, "Illegal native method name encountered"); 2585 os::print_jni_name_prefix_on(&st, args_size); 2586 st.print_raw(pure_name); 2587 st.print_raw(long_name); 2588 os::print_jni_name_suffix_on(&st, args_size); 2589 char* jni_long_name = st.as_string(); 2590 entry = (address) os::dll_lookup(sl_handle, jni_long_name); 2591 if (entry == nullptr) { 2592 JVMCI_THROW_MSG_NULL(UnsatisfiedLinkError, err_msg("%s [neither %s nor %s exist in %s]", 2593 method->name_and_sig_as_C_string(), 2594 jni_name, jni_long_name, sl_path)); 2595 } 2596 } 2597 2598 if (method->has_native_function() && entry != method->native_function()) { 2599 JVMCI_THROW_MSG_NULL(UnsatisfiedLinkError, err_msg("%s [cannot re-link from " PTR_FORMAT " to " PTR_FORMAT "]", 2600 method->name_and_sig_as_C_string(), p2i(method->native_function()), p2i(entry))); 2601 } 2602 method->set_native_function(entry, Method::native_bind_event_is_interesting); 2603 log_debug(jni, resolve)("[Dynamic-linking native method %s.%s ... JNI] @ " PTR_FORMAT, 2604 method->method_holder()->external_name(), 2605 method->name()->as_C_string(), 2606 p2i((void*) entry)); 2607 } 2608 } 2609 2610 typeArrayOop info_oop = oopFactory::new_longArray(4, CHECK_NULL); 2611 jlongArray info = (jlongArray) JNIHandles::make_local(THREAD, info_oop); 2612 runtime->init_JavaVM_info(info, JVMCI_CHECK_NULL); 2613 return info; 2614 C2V_END 2615 2616 C2V_VMENTRY_PREFIX(jboolean, isCurrentThreadAttached, (JNIEnv* env, jobject c2vm)) 2617 if (thread == nullptr || thread->libjvmci_runtime() == nullptr) { 2618 // Called from unattached JVMCI shared library thread 2619 return false; 2620 } 2621 if (thread->jni_environment() == env) { 2622 C2V_BLOCK(jboolean, isCurrentThreadAttached, (JNIEnv* env, jobject)) 2623 JVMCITraceMark jtm("isCurrentThreadAttached"); 2624 requireJVMCINativeLibrary(JVMCI_CHECK_0); 2625 JVMCIRuntime* runtime = thread->libjvmci_runtime(); 2626 if (runtime == nullptr || !runtime->has_shared_library_javavm()) { 2627 JVMCI_THROW_MSG_0(IllegalStateException, "Require JVMCI shared library JavaVM to be initialized in isCurrentThreadAttached"); 2628 } 2629 JNIEnv* peerEnv; 2630 return runtime->GetEnv(thread, (void**) &peerEnv, JNI_VERSION_1_2) == JNI_OK; 2631 } 2632 return true; 2633 C2V_END 2634 2635 C2V_VMENTRY_PREFIX(jlong, getCurrentJavaThread, (JNIEnv* env, jobject c2vm)) 2636 if (thread == nullptr) { 2637 // Called from unattached JVMCI shared library thread 2638 return 0L; 2639 } 2640 return (jlong) p2i(thread); 2641 C2V_END 2642 2643 // Attaches a thread started in a JVMCI shared library to a JavaThread and JVMCI runtime. 2644 static void attachSharedLibraryThread(JNIEnv* env, jbyteArray name, jboolean as_daemon) { 2645 JavaVM* javaVM = nullptr; 2646 jint res = env->GetJavaVM(&javaVM); 2647 if (res != JNI_OK) { 2648 JNI_THROW("attachSharedLibraryThread", InternalError, err_msg("Error getting shared library JavaVM from shared library JNIEnv: %d", res)); 2649 } 2650 extern struct JavaVM_ main_vm; 2651 JNIEnv* hotspotEnv; 2652 2653 int name_len = env->GetArrayLength(name); 2654 char name_buf[64]; // Cannot use Resource heap as it requires a current thread 2655 int to_copy = MIN2(name_len, (int) sizeof(name_buf) - 1); 2656 env->GetByteArrayRegion(name, 0, to_copy, (jbyte*) name_buf); 2657 name_buf[to_copy] = '\0'; 2658 JavaVMAttachArgs attach_args; 2659 attach_args.version = JNI_VERSION_1_2; 2660 attach_args.name = name_buf; 2661 attach_args.group = nullptr; 2662 res = as_daemon ? main_vm.AttachCurrentThreadAsDaemon((void**)&hotspotEnv, &attach_args) : 2663 main_vm.AttachCurrentThread((void**)&hotspotEnv, &attach_args); 2664 if (res != JNI_OK) { 2665 JNI_THROW("attachSharedLibraryThread", InternalError, err_msg("Trying to attach thread returned %d", res)); 2666 } 2667 JavaThread* thread = JavaThread::thread_from_jni_environment(hotspotEnv); 2668 const char* attach_error; 2669 { 2670 // Transition to VM 2671 JVMCI_VM_ENTRY_MARK 2672 attach_error = JVMCIRuntime::attach_shared_library_thread(thread, javaVM); 2673 // Transition back to Native 2674 } 2675 if (attach_error != nullptr) { 2676 JNI_THROW("attachCurrentThread", InternalError, attach_error); 2677 } 2678 } 2679 2680 C2V_VMENTRY_PREFIX(jboolean, attachCurrentThread, (JNIEnv* env, jobject c2vm, jbyteArray name, jboolean as_daemon, jlongArray javaVM_info)) 2681 if (thread == nullptr) { 2682 attachSharedLibraryThread(env, name, as_daemon); 2683 return true; 2684 } 2685 if (thread->jni_environment() == env) { 2686 // Called from HotSpot 2687 C2V_BLOCK(jboolean, attachCurrentThread, (JNIEnv* env, jobject, jboolean)) 2688 JVMCITraceMark jtm("attachCurrentThread"); 2689 requireJVMCINativeLibrary(JVMCI_CHECK_0); 2690 2691 JVMCIRuntime* runtime = JVMCI::compiler_runtime(thread); 2692 JNIEnv* peerJNIEnv; 2693 if (runtime->has_shared_library_javavm()) { 2694 if (runtime->GetEnv(thread, (void**)&peerJNIEnv, JNI_VERSION_1_2) == JNI_OK) { 2695 // Already attached 2696 runtime->init_JavaVM_info(javaVM_info, JVMCI_CHECK_0); 2697 return false; 2698 } 2699 } 2700 2701 { 2702 // Ensure the JVMCI shared library runtime is initialized. 2703 PEER_JVMCIENV_FROM_THREAD(THREAD, false); 2704 PEER_JVMCIENV->check_init(JVMCI_CHECK_0); 2705 2706 HandleMark hm(thread); 2707 JVMCIObject receiver = runtime->get_HotSpotJVMCIRuntime(PEER_JVMCIENV); 2708 if (PEER_JVMCIENV->has_pending_exception()) { 2709 PEER_JVMCIENV->describe_pending_exception(tty); 2710 } 2711 char* sl_path; 2712 if (JVMCI::get_shared_library(sl_path, false) == nullptr) { 2713 JVMCI_THROW_MSG_0(InternalError, "Error initializing JVMCI runtime"); 2714 } 2715 } 2716 2717 JavaVMAttachArgs attach_args; 2718 attach_args.version = JNI_VERSION_1_2; 2719 attach_args.name = const_cast<char*>(thread->name()); 2720 attach_args.group = nullptr; 2721 if (runtime->GetEnv(thread, (void**) &peerJNIEnv, JNI_VERSION_1_2) == JNI_OK) { 2722 return false; 2723 } 2724 jint res = as_daemon ? runtime->AttachCurrentThreadAsDaemon(thread, (void**) &peerJNIEnv, &attach_args) : 2725 runtime->AttachCurrentThread(thread, (void**) &peerJNIEnv, &attach_args); 2726 2727 if (res == JNI_OK) { 2728 guarantee(peerJNIEnv != nullptr, "must be"); 2729 runtime->init_JavaVM_info(javaVM_info, JVMCI_CHECK_0); 2730 JVMCI_event_1("attached to JavaVM[%d] for JVMCI runtime %d", runtime->get_shared_library_javavm_id(), runtime->id()); 2731 return true; 2732 } 2733 JVMCI_THROW_MSG_0(InternalError, err_msg("Error %d while attaching %s", res, attach_args.name)); 2734 } 2735 // Called from JVMCI shared library 2736 return false; 2737 C2V_END 2738 2739 C2V_VMENTRY_PREFIX(jboolean, detachCurrentThread, (JNIEnv* env, jobject c2vm, jboolean release)) 2740 if (thread == nullptr) { 2741 // Called from unattached JVMCI shared library thread 2742 JNI_THROW_("detachCurrentThread", IllegalStateException, "Cannot detach non-attached thread", false); 2743 } 2744 if (thread->jni_environment() == env) { 2745 // Called from HotSpot 2746 C2V_BLOCK(void, detachCurrentThread, (JNIEnv* env, jobject)) 2747 JVMCITraceMark jtm("detachCurrentThread"); 2748 requireJVMCINativeLibrary(JVMCI_CHECK_0); 2749 requireInHotSpot("detachCurrentThread", JVMCI_CHECK_0); 2750 JVMCIRuntime* runtime = thread->libjvmci_runtime(); 2751 if (runtime == nullptr || !runtime->has_shared_library_javavm()) { 2752 JVMCI_THROW_MSG_0(IllegalStateException, "Require JVMCI shared library JavaVM to be initialized in detachCurrentThread"); 2753 } 2754 JNIEnv* peerEnv; 2755 2756 if (runtime->GetEnv(thread, (void**) &peerEnv, JNI_VERSION_1_2) != JNI_OK) { 2757 JVMCI_THROW_MSG_0(IllegalStateException, err_msg("Cannot detach non-attached thread: %s", thread->name())); 2758 } 2759 jint res = runtime->DetachCurrentThread(thread); 2760 if (res != JNI_OK) { 2761 JVMCI_THROW_MSG_0(InternalError, err_msg("Error %d while attaching %s", res, thread->name())); 2762 } 2763 JVMCI_event_1("detached from JavaVM[%d] for JVMCI runtime %d", 2764 runtime->get_shared_library_javavm_id(), runtime->id()); 2765 if (release) { 2766 return runtime->detach_thread(thread, "user thread detach"); 2767 } 2768 } else { 2769 // Called from attached JVMCI shared library thread 2770 if (release) { 2771 JNI_THROW_("detachCurrentThread", InternalError, "JVMCI shared library thread cannot release JVMCI shared library JavaVM", false); 2772 } 2773 JVMCIRuntime* runtime = thread->libjvmci_runtime(); 2774 if (runtime == nullptr) { 2775 JNI_THROW_("detachCurrentThread", InternalError, "JVMCI shared library thread should have a JVMCI runtime", false); 2776 } 2777 { 2778 // Transition to VM 2779 C2V_BLOCK(jboolean, detachCurrentThread, (JNIEnv* env, jobject)) 2780 // Cannot destroy shared library JavaVM as we're about to return to it. 2781 runtime->detach_thread(thread, "shared library thread detach", false); 2782 JVMCI_event_1("detaching JVMCI shared library thread from HotSpot JavaVM"); 2783 // Transition back to Native 2784 } 2785 extern struct JavaVM_ main_vm; 2786 jint res = main_vm.DetachCurrentThread(); 2787 if (res != JNI_OK) { 2788 JNI_THROW_("detachCurrentThread", InternalError, "Cannot detach non-attached thread", false); 2789 } 2790 } 2791 return false; 2792 C2V_END 2793 2794 C2V_VMENTRY_0(jlong, translate, (JNIEnv* env, jobject, jobject obj_handle, jboolean callPostTranslation)) 2795 requireJVMCINativeLibrary(JVMCI_CHECK_0); 2796 if (obj_handle == nullptr) { 2797 return 0L; 2798 } 2799 PEER_JVMCIENV_FROM_THREAD(THREAD, !JVMCIENV->is_hotspot()); 2800 CompilerThreadCanCallJava canCallJava(thread, PEER_JVMCIENV->is_hotspot()); 2801 PEER_JVMCIENV->check_init(JVMCI_CHECK_0); 2802 2803 JVMCIEnv* thisEnv = JVMCIENV; 2804 JVMCIObject obj = thisEnv->wrap(obj_handle); 2805 JVMCIObject result; 2806 if (thisEnv->isa_HotSpotResolvedJavaMethodImpl(obj)) { 2807 methodHandle method(THREAD, thisEnv->asMethod(obj)); 2808 result = PEER_JVMCIENV->get_jvmci_method(method, JVMCI_CHECK_0); 2809 } else if (thisEnv->isa_HotSpotResolvedObjectTypeImpl(obj)) { 2810 Klass* klass = thisEnv->asKlass(obj); 2811 JVMCIKlassHandle klass_handle(THREAD); 2812 klass_handle = klass; 2813 result = PEER_JVMCIENV->get_jvmci_type(klass_handle, JVMCI_CHECK_0); 2814 } else if (thisEnv->isa_HotSpotResolvedPrimitiveType(obj)) { 2815 BasicType type = JVMCIENV->kindToBasicType(JVMCIENV->get_HotSpotResolvedPrimitiveType_kind(obj), JVMCI_CHECK_0); 2816 result = PEER_JVMCIENV->get_jvmci_primitive_type(type); 2817 } else if (thisEnv->isa_IndirectHotSpotObjectConstantImpl(obj) || 2818 thisEnv->isa_DirectHotSpotObjectConstantImpl(obj)) { 2819 Handle constant = thisEnv->asConstant(obj, JVMCI_CHECK_0); 2820 result = PEER_JVMCIENV->get_object_constant(constant()); 2821 } else if (thisEnv->isa_HotSpotNmethod(obj)) { 2822 if (PEER_JVMCIENV->is_hotspot()) { 2823 JVMCINMethodHandle nmethod_handle(THREAD); 2824 nmethod* nm = JVMCIENV->get_nmethod(obj, nmethod_handle); 2825 if (nm != nullptr) { 2826 JVMCINMethodData* data = nm->jvmci_nmethod_data(); 2827 if (data != nullptr) { 2828 // Only the mirror in the HotSpot heap is accessible 2829 // through JVMCINMethodData 2830 oop nmethod_mirror = data->get_nmethod_mirror(nm, /* phantom_ref */ true); 2831 if (nmethod_mirror != nullptr) { 2832 result = HotSpotJVMCI::wrap(nmethod_mirror); 2833 } 2834 } 2835 } 2836 } 2837 2838 if (result.is_null()) { 2839 JVMCIObject methodObject = thisEnv->get_HotSpotNmethod_method(obj); 2840 methodHandle mh(THREAD, thisEnv->asMethod(methodObject)); 2841 jboolean isDefault = thisEnv->get_HotSpotNmethod_isDefault(obj); 2842 jlong compileIdSnapshot = thisEnv->get_HotSpotNmethod_compileIdSnapshot(obj); 2843 JVMCIObject name_string = thisEnv->get_InstalledCode_name(obj); 2844 const char* cstring = name_string.is_null() ? nullptr : thisEnv->as_utf8_string(name_string); 2845 // Create a new HotSpotNmethod instance in the peer runtime 2846 result = PEER_JVMCIENV->new_HotSpotNmethod(mh, cstring, isDefault, compileIdSnapshot, JVMCI_CHECK_0); 2847 JVMCINMethodHandle nmethod_handle(THREAD); 2848 nmethod* nm = JVMCIENV->get_nmethod(obj, nmethod_handle); 2849 if (result.is_null()) { 2850 // exception occurred (e.g. OOME) creating a new HotSpotNmethod 2851 } else if (nm == nullptr) { 2852 // nmethod must have been unloaded 2853 } else { 2854 // Link the new HotSpotNmethod to the nmethod 2855 PEER_JVMCIENV->initialize_installed_code(result, nm, JVMCI_CHECK_0); 2856 // Only non-default HotSpotNmethod instances in the HotSpot heap are tracked directly by the runtime. 2857 if (!isDefault && PEER_JVMCIENV->is_hotspot()) { 2858 JVMCINMethodData* data = nm->jvmci_nmethod_data(); 2859 if (data == nullptr) { 2860 JVMCI_THROW_MSG_0(IllegalArgumentException, "Missing HotSpotNmethod data"); 2861 } 2862 if (data->get_nmethod_mirror(nm, /* phantom_ref */ false) != nullptr) { 2863 JVMCI_THROW_MSG_0(IllegalArgumentException, "Cannot overwrite existing HotSpotNmethod mirror for nmethod"); 2864 } 2865 oop nmethod_mirror = HotSpotJVMCI::resolve(result); 2866 data->set_nmethod_mirror(nm, nmethod_mirror); 2867 } 2868 } 2869 } 2870 } else { 2871 JVMCI_THROW_MSG_0(IllegalArgumentException, 2872 err_msg("Cannot translate object of type: %s", thisEnv->klass_name(obj))); 2873 } 2874 if (callPostTranslation) { 2875 PEER_JVMCIENV->call_HotSpotJVMCIRuntime_postTranslation(result, JVMCI_CHECK_0); 2876 } 2877 // Propagate any exception that occurred while creating the translated object 2878 if (PEER_JVMCIENV->transfer_pending_exception(thread, thisEnv)) { 2879 return 0L; 2880 } 2881 return (jlong) PEER_JVMCIENV->make_global(result).as_jobject(); 2882 C2V_END 2883 2884 C2V_VMENTRY_NULL(jobject, unhand, (JNIEnv* env, jobject, jlong obj_handle)) 2885 requireJVMCINativeLibrary(JVMCI_CHECK_NULL); 2886 if (obj_handle == 0L) { 2887 return nullptr; 2888 } 2889 jobject global_handle = (jobject) obj_handle; 2890 JVMCIObject global_handle_obj = JVMCIENV->wrap(global_handle); 2891 jobject result = JVMCIENV->make_local(global_handle_obj).as_jobject(); 2892 2893 JVMCIENV->destroy_global(global_handle_obj); 2894 return result; 2895 C2V_END 2896 2897 C2V_VMENTRY(void, updateHotSpotNmethod, (JNIEnv* env, jobject, jobject code_handle)) 2898 JVMCIObject code = JVMCIENV->wrap(code_handle); 2899 // Execute this operation for the side effect of updating the InstalledCode state 2900 JVMCINMethodHandle nmethod_handle(THREAD); 2901 JVMCIENV->get_nmethod(code, nmethod_handle); 2902 C2V_END 2903 2904 C2V_VMENTRY_NULL(jbyteArray, getCode, (JNIEnv* env, jobject, jobject code_handle)) 2905 JVMCIObject code = JVMCIENV->wrap(code_handle); 2906 CodeBlob* cb = JVMCIENV->get_code_blob(code); 2907 if (cb == nullptr) { 2908 return nullptr; 2909 } 2910 // Make a resource copy of code before the allocation causes a safepoint 2911 int code_size = cb->code_size(); 2912 jbyte* code_bytes = NEW_RESOURCE_ARRAY(jbyte, code_size); 2913 memcpy(code_bytes, (jbyte*) cb->code_begin(), code_size); 2914 2915 JVMCIPrimitiveArray result = JVMCIENV->new_byteArray(code_size, JVMCI_CHECK_NULL); 2916 JVMCIENV->copy_bytes_from(code_bytes, result, 0, code_size); 2917 return JVMCIENV->get_jbyteArray(result); 2918 C2V_END 2919 2920 C2V_VMENTRY_NULL(jobject, asReflectionExecutable, (JNIEnv* env, jobject, ARGUMENT_PAIR(method))) 2921 requireInHotSpot("asReflectionExecutable", JVMCI_CHECK_NULL); 2922 methodHandle m(THREAD, UNPACK_PAIR(Method, method)); 2923 oop executable; 2924 if (m->is_class_initializer()) { 2925 JVMCI_THROW_MSG_NULL(IllegalArgumentException, 2926 "Cannot create java.lang.reflect.Method for class initializer"); 2927 } 2928 else if (m->is_object_constructor()) { 2929 executable = Reflection::new_constructor(m, CHECK_NULL); 2930 } else { 2931 executable = Reflection::new_method(m, false, CHECK_NULL); 2932 } 2933 return JNIHandles::make_local(THREAD, executable); 2934 C2V_END 2935 2936 static InstanceKlass* check_field(Klass* klass, jint index, JVMCI_TRAPS) { 2937 if (!klass->is_instance_klass()) { 2938 JVMCI_THROW_MSG_NULL(IllegalArgumentException, 2939 err_msg("Expected non-primitive type, got %s", klass->external_name())); 2940 } 2941 InstanceKlass* iklass = InstanceKlass::cast(klass); 2942 if (index < 0 || index > iklass->total_fields_count()) { 2943 JVMCI_THROW_MSG_NULL(IllegalArgumentException, 2944 err_msg("Field index %d out of bounds for %s", index, klass->external_name())); 2945 } 2946 return iklass; 2947 } 2948 2949 C2V_VMENTRY_NULL(jobject, asReflectionField, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass), jint index)) 2950 requireInHotSpot("asReflectionField", JVMCI_CHECK_NULL); 2951 Klass* klass = UNPACK_PAIR(Klass, klass); 2952 InstanceKlass* iklass = check_field(klass, index, JVMCIENV); 2953 fieldDescriptor fd(iklass, index); 2954 oop reflected = Reflection::new_field(&fd, CHECK_NULL); 2955 return JNIHandles::make_local(THREAD, reflected); 2956 C2V_END 2957 2958 static jbyteArray get_encoded_annotation_data(InstanceKlass* holder, AnnotationArray* annotations_array, bool for_class, 2959 jint filter_length, jlong filter_klass_pointers, 2960 JavaThread* THREAD, JVMCIEnv* JVMCIENV) { 2961 // Get a ConstantPool object for annotation parsing 2962 Handle jcp = reflect_ConstantPool::create(CHECK_NULL); 2963 reflect_ConstantPool::set_cp(jcp(), holder->constants()); 2964 2965 // load VMSupport 2966 Symbol* klass = vmSymbols::jdk_internal_vm_VMSupport(); 2967 Klass* k = SystemDictionary::resolve_or_fail(klass, true, CHECK_NULL); 2968 2969 InstanceKlass* vm_support = InstanceKlass::cast(k); 2970 if (vm_support->should_be_initialized()) { 2971 vm_support->initialize(CHECK_NULL); 2972 } 2973 2974 typeArrayOop annotations_oop = Annotations::make_java_array(annotations_array, CHECK_NULL); 2975 typeArrayHandle annotations = typeArrayHandle(THREAD, annotations_oop); 2976 2977 InstanceKlass** filter = filter_length == 1 ? 2978 (InstanceKlass**) &filter_klass_pointers: 2979 (InstanceKlass**) filter_klass_pointers; 2980 objArrayOop filter_oop = oopFactory::new_objArray(vmClasses::Class_klass(), filter_length, CHECK_NULL); 2981 objArrayHandle filter_classes(THREAD, filter_oop); 2982 for (int i = 0; i < filter_length; i++) { 2983 filter_classes->obj_at_put(i, filter[i]->java_mirror()); 2984 } 2985 2986 // invoke VMSupport.encodeAnnotations 2987 JavaValue result(T_OBJECT); 2988 JavaCallArguments args; 2989 args.push_oop(annotations); 2990 args.push_oop(Handle(THREAD, holder->java_mirror())); 2991 args.push_oop(jcp); 2992 args.push_int(for_class); 2993 args.push_oop(filter_classes); 2994 Symbol* signature = vmSymbols::encodeAnnotations_signature(); 2995 JavaCalls::call_static(&result, 2996 vm_support, 2997 vmSymbols::encodeAnnotations_name(), 2998 signature, 2999 &args, 3000 CHECK_NULL); 3001 3002 oop res = result.get_oop(); 3003 if (JVMCIENV->is_hotspot()) { 3004 return (jbyteArray) JNIHandles::make_local(THREAD, res); 3005 } 3006 3007 typeArrayOop ba = typeArrayOop(res); 3008 int ba_len = ba->length(); 3009 jbyte* ba_buf = NEW_RESOURCE_ARRAY_IN_THREAD_RETURN_NULL(THREAD, jbyte, ba_len); 3010 if (ba_buf == nullptr) { 3011 JVMCI_THROW_MSG_NULL(InternalError, 3012 err_msg("could not allocate %d bytes", ba_len)); 3013 3014 } 3015 memcpy(ba_buf, ba->byte_at_addr(0), ba_len); 3016 JVMCIPrimitiveArray ba_dest = JVMCIENV->new_byteArray(ba_len, JVMCI_CHECK_NULL); 3017 JVMCIENV->copy_bytes_from(ba_buf, ba_dest, 0, ba_len); 3018 return JVMCIENV->get_jbyteArray(ba_dest); 3019 } 3020 3021 C2V_VMENTRY_NULL(jbyteArray, getEncodedClassAnnotationData, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass), 3022 jobject filter, jint filter_length, jlong filter_klass_pointers)) 3023 CompilerThreadCanCallJava canCallJava(thread, true); // Requires Java support 3024 InstanceKlass* holder = InstanceKlass::cast(UNPACK_PAIR(Klass, klass)); 3025 return get_encoded_annotation_data(holder, holder->class_annotations(), true, filter_length, filter_klass_pointers, THREAD, JVMCIENV); 3026 C2V_END 3027 3028 C2V_VMENTRY_NULL(jbyteArray, getEncodedExecutableAnnotationData, (JNIEnv* env, jobject, ARGUMENT_PAIR(method), 3029 jobject filter, jint filter_length, jlong filter_klass_pointers)) 3030 CompilerThreadCanCallJava canCallJava(thread, true); // Requires Java support 3031 methodHandle method(THREAD, UNPACK_PAIR(Method, method)); 3032 return get_encoded_annotation_data(method->method_holder(), method->annotations(), false, filter_length, filter_klass_pointers, THREAD, JVMCIENV); 3033 C2V_END 3034 3035 C2V_VMENTRY_NULL(jbyteArray, getEncodedFieldAnnotationData, (JNIEnv* env, jobject, ARGUMENT_PAIR(klass), jint index, 3036 jobject filter, jint filter_length, jlong filter_klass_pointers)) 3037 CompilerThreadCanCallJava canCallJava(thread, true); // Requires Java support 3038 InstanceKlass* holder = check_field(InstanceKlass::cast(UNPACK_PAIR(Klass, klass)), index, JVMCIENV); 3039 fieldDescriptor fd(holder, index); 3040 return get_encoded_annotation_data(holder, fd.annotations(), false, filter_length, filter_klass_pointers, THREAD, JVMCIENV); 3041 C2V_END 3042 3043 C2V_VMENTRY_NULL(jobjectArray, getFailedSpeculations, (JNIEnv* env, jobject, jlong failed_speculations_address, jobjectArray current)) 3044 FailedSpeculation* head = *((FailedSpeculation**)(address) failed_speculations_address); 3045 int result_length = 0; 3046 for (FailedSpeculation* fs = head; fs != nullptr; fs = fs->next()) { 3047 result_length++; 3048 } 3049 int current_length = 0; 3050 JVMCIObjectArray current_array = nullptr; 3051 if (current != nullptr) { 3052 current_array = JVMCIENV->wrap(current); 3053 current_length = JVMCIENV->get_length(current_array); 3054 if (current_length == result_length) { 3055 // No new failures 3056 return current; 3057 } 3058 } 3059 JVMCIObjectArray result = JVMCIENV->new_byte_array_array(result_length, JVMCI_CHECK_NULL); 3060 int result_index = 0; 3061 for (FailedSpeculation* fs = head; result_index < result_length; fs = fs->next()) { 3062 assert(fs != nullptr, "npe"); 3063 JVMCIPrimitiveArray entry; 3064 if (result_index < current_length) { 3065 entry = (JVMCIPrimitiveArray) JVMCIENV->get_object_at(current_array, result_index); 3066 } else { 3067 entry = JVMCIENV->new_byteArray(fs->data_len(), JVMCI_CHECK_NULL); 3068 JVMCIENV->copy_bytes_from((jbyte*) fs->data(), entry, 0, fs->data_len()); 3069 } 3070 JVMCIENV->put_object_at(result, result_index++, entry); 3071 } 3072 return JVMCIENV->get_jobjectArray(result); 3073 C2V_END 3074 3075 C2V_VMENTRY_0(jlong, getFailedSpeculationsAddress, (JNIEnv* env, jobject, ARGUMENT_PAIR(method))) 3076 methodHandle method(THREAD, UNPACK_PAIR(Method, method)); 3077 MethodData* method_data = get_profiling_method_data(method, CHECK_0); 3078 return (jlong) method_data->get_failed_speculations_address(); 3079 C2V_END 3080 3081 C2V_VMENTRY(void, releaseFailedSpeculations, (JNIEnv* env, jobject, jlong failed_speculations_address)) 3082 FailedSpeculation::free_failed_speculations((FailedSpeculation**)(address) failed_speculations_address); 3083 C2V_END 3084 3085 C2V_VMENTRY_0(jboolean, addFailedSpeculation, (JNIEnv* env, jobject, jlong failed_speculations_address, jbyteArray speculation_obj)) 3086 JVMCIPrimitiveArray speculation_handle = JVMCIENV->wrap(speculation_obj); 3087 int speculation_len = JVMCIENV->get_length(speculation_handle); 3088 char* speculation = NEW_RESOURCE_ARRAY(char, speculation_len); 3089 JVMCIENV->copy_bytes_to(speculation_handle, (jbyte*) speculation, 0, speculation_len); 3090 return FailedSpeculation::add_failed_speculation(nullptr, (FailedSpeculation**)(address) failed_speculations_address, (address) speculation, speculation_len); 3091 C2V_END 3092 3093 C2V_VMENTRY(void, callSystemExit, (JNIEnv* env, jobject, jint status)) 3094 if (!JVMCIENV->is_hotspot()) { 3095 // It's generally not safe to call Java code before the module system is initialized 3096 if (!Universe::is_module_initialized()) { 3097 JVMCI_event_1("callSystemExit(%d) before Universe::is_module_initialized() -> direct VM exit", status); 3098 vm_exit_during_initialization(); 3099 } 3100 } 3101 CompilerThreadCanCallJava canCallJava(thread, true); 3102 JavaValue result(T_VOID); 3103 JavaCallArguments jargs(1); 3104 jargs.push_int(status); 3105 JavaCalls::call_static(&result, 3106 vmClasses::System_klass(), 3107 vmSymbols::exit_method_name(), 3108 vmSymbols::int_void_signature(), 3109 &jargs, 3110 CHECK); 3111 C2V_END 3112 3113 C2V_VMENTRY_0(jlong, ticksNow, (JNIEnv* env, jobject)) 3114 return CompilerEvent::ticksNow(); 3115 C2V_END 3116 3117 C2V_VMENTRY_0(jint, registerCompilerPhase, (JNIEnv* env, jobject, jstring jphase_name)) 3118 #if INCLUDE_JFR 3119 JVMCIObject phase_name = JVMCIENV->wrap(jphase_name); 3120 const char *name = JVMCIENV->as_utf8_string(phase_name); 3121 return CompilerEvent::PhaseEvent::get_phase_id(name, true, true, true); 3122 #else 3123 return -1; 3124 #endif // !INCLUDE_JFR 3125 C2V_END 3126 3127 C2V_VMENTRY(void, notifyCompilerPhaseEvent, (JNIEnv* env, jobject, jlong startTime, jint phase, jint compileId, jint level)) 3128 EventCompilerPhase event(UNTIMED); 3129 if (event.should_commit()) { 3130 CompilerEvent::PhaseEvent::post(event, startTime, phase, compileId, level); 3131 } 3132 C2V_END 3133 3134 C2V_VMENTRY(void, notifyCompilerInliningEvent, (JNIEnv* env, jobject, jint compileId, ARGUMENT_PAIR(caller), ARGUMENT_PAIR(callee), jboolean succeeded, jstring jmessage, jint bci)) 3135 EventCompilerInlining event; 3136 if (event.should_commit()) { 3137 Method* caller = UNPACK_PAIR(Method, caller); 3138 Method* callee = UNPACK_PAIR(Method, callee); 3139 JVMCIObject message = JVMCIENV->wrap(jmessage); 3140 CompilerEvent::InlineEvent::post(event, compileId, caller, callee, succeeded, JVMCIENV->as_utf8_string(message), bci); 3141 } 3142 C2V_END 3143 3144 C2V_VMENTRY(void, setThreadLocalObject, (JNIEnv* env, jobject, jint id, jobject value)) 3145 requireInHotSpot("setThreadLocalObject", JVMCI_CHECK); 3146 if (id == 0) { 3147 thread->set_jvmci_reserved_oop0(JNIHandles::resolve(value)); 3148 return; 3149 } 3150 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), 3151 err_msg("%d is not a valid thread local id", id)); 3152 C2V_END 3153 3154 C2V_VMENTRY_NULL(jobject, getThreadLocalObject, (JNIEnv* env, jobject, jint id)) 3155 requireInHotSpot("getThreadLocalObject", JVMCI_CHECK_NULL); 3156 if (id == 0) { 3157 return JNIHandles::make_local(thread->get_jvmci_reserved_oop0()); 3158 } 3159 THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), 3160 err_msg("%d is not a valid thread local id", id)); 3161 C2V_END 3162 3163 C2V_VMENTRY(void, setThreadLocalLong, (JNIEnv* env, jobject, jint id, jlong value)) 3164 requireInHotSpot("setThreadLocalLong", JVMCI_CHECK); 3165 if (id == 0) { 3166 thread->set_jvmci_reserved0(value); 3167 } else if (id == 1) { 3168 thread->set_jvmci_reserved1(value); 3169 } else { 3170 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), 3171 err_msg("%d is not a valid thread local id", id)); 3172 } 3173 C2V_END 3174 3175 C2V_VMENTRY_0(jlong, getThreadLocalLong, (JNIEnv* env, jobject, jint id)) 3176 requireInHotSpot("getThreadLocalLong", JVMCI_CHECK_0); 3177 if (id == 0) { 3178 return thread->get_jvmci_reserved0(); 3179 } else if (id == 1) { 3180 return thread->get_jvmci_reserved1(); 3181 } else { 3182 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 3183 err_msg("%d is not a valid thread local id", id)); 3184 } 3185 C2V_END 3186 3187 C2V_VMENTRY(void, getOopMapAt, (JNIEnv* env, jobject, ARGUMENT_PAIR(method), 3188 jint bci, jlongArray oop_map_handle)) 3189 methodHandle method(THREAD, UNPACK_PAIR(Method, method)); 3190 if (bci < 0 || bci >= method->code_size()) { 3191 JVMCI_THROW_MSG(IllegalArgumentException, 3192 err_msg("bci %d is out of bounds [0 .. %d)", bci, method->code_size())); 3193 } 3194 InterpreterOopMap mask; 3195 OopMapCache::compute_one_oop_map(method, bci, &mask); 3196 if (!mask.has_valid_mask()) { 3197 JVMCI_THROW_MSG(IllegalArgumentException, err_msg("bci %d is not valid", bci)); 3198 } 3199 if (mask.number_of_entries() == 0) { 3200 return; 3201 } 3202 3203 int nslots = method->max_locals() + method->max_stack(); 3204 int nwords = ((nslots - 1) / 64) + 1; 3205 JVMCIPrimitiveArray oop_map = JVMCIENV->wrap(oop_map_handle); 3206 int oop_map_len = JVMCIENV->get_length(oop_map); 3207 if (nwords > oop_map_len) { 3208 JVMCI_THROW_MSG(IllegalArgumentException, 3209 err_msg("oop map too short: %d > %d", nwords, oop_map_len)); 3210 } 3211 3212 jlong* oop_map_buf = NEW_RESOURCE_ARRAY_IN_THREAD_RETURN_NULL(THREAD, jlong, nwords); 3213 if (oop_map_buf == nullptr) { 3214 JVMCI_THROW_MSG(InternalError, err_msg("could not allocate %d longs", nwords)); 3215 } 3216 for (int i = 0; i < nwords; i++) { 3217 oop_map_buf[i] = 0L; 3218 } 3219 3220 BitMapView oop_map_view = BitMapView((BitMap::bm_word_t*) oop_map_buf, nwords * BitsPerLong); 3221 for (int i = 0; i < nslots; i++) { 3222 if (mask.is_oop(i)) { 3223 oop_map_view.set_bit(i); 3224 } 3225 } 3226 JVMCIENV->copy_longs_from((jlong*)oop_map_buf, oop_map, 0, nwords); 3227 C2V_END 3228 3229 #define CC (char*) /*cast a literal from (const char*)*/ 3230 #define FN_PTR(f) CAST_FROM_FN_PTR(void*, &(c2v_ ## f)) 3231 3232 #define STRING "Ljava/lang/String;" 3233 #define OBJECT "Ljava/lang/Object;" 3234 #define CLASS "Ljava/lang/Class;" 3235 #define OBJECTCONSTANT "Ljdk/vm/ci/hotspot/HotSpotObjectConstantImpl;" 3236 #define EXECUTABLE "Ljava/lang/reflect/Executable;" 3237 #define STACK_TRACE_ELEMENT "Ljava/lang/StackTraceElement;" 3238 #define INSTALLED_CODE "Ljdk/vm/ci/code/InstalledCode;" 3239 #define BYTECODE_FRAME "Ljdk/vm/ci/code/BytecodeFrame;" 3240 #define JAVACONSTANT "Ljdk/vm/ci/meta/JavaConstant;" 3241 #define INSPECTED_FRAME_VISITOR "Ljdk/vm/ci/code/stack/InspectedFrameVisitor;" 3242 #define RESOLVED_METHOD "Ljdk/vm/ci/meta/ResolvedJavaMethod;" 3243 #define FIELDINFO "Ljdk/vm/ci/hotspot/HotSpotResolvedObjectTypeImpl$FieldInfo;" 3244 #define HS_RESOLVED_TYPE "Ljdk/vm/ci/hotspot/HotSpotResolvedJavaType;" 3245 #define HS_INSTALLED_CODE "Ljdk/vm/ci/hotspot/HotSpotInstalledCode;" 3246 #define HS_NMETHOD "Ljdk/vm/ci/hotspot/HotSpotNmethod;" 3247 #define HS_COMPILED_CODE "Ljdk/vm/ci/hotspot/HotSpotCompiledCode;" 3248 #define HS_CONFIG "Ljdk/vm/ci/hotspot/HotSpotVMConfig;" 3249 #define HS_STACK_FRAME_REF "Ljdk/vm/ci/hotspot/HotSpotStackFrameReference;" 3250 #define HS_SPECULATION_LOG "Ljdk/vm/ci/hotspot/HotSpotSpeculationLog;" 3251 #define REFLECTION_EXECUTABLE "Ljava/lang/reflect/Executable;" 3252 #define REFLECTION_FIELD "Ljava/lang/reflect/Field;" 3253 3254 // Types wrapping VM pointers. The ...2 macro is for a pair: (wrapper, pointer) 3255 #define HS_METHOD "Ljdk/vm/ci/hotspot/HotSpotResolvedJavaMethodImpl;" 3256 #define HS_METHOD2 "Ljdk/vm/ci/hotspot/HotSpotResolvedJavaMethodImpl;J" 3257 #define HS_KLASS "Ljdk/vm/ci/hotspot/HotSpotResolvedObjectTypeImpl;" 3258 #define HS_KLASS2 "Ljdk/vm/ci/hotspot/HotSpotResolvedObjectTypeImpl;J" 3259 #define HS_CONSTANT_POOL "Ljdk/vm/ci/hotspot/HotSpotConstantPool;" 3260 #define HS_CONSTANT_POOL2 "Ljdk/vm/ci/hotspot/HotSpotConstantPool;J" 3261 3262 JNINativeMethod CompilerToVM::methods[] = { 3263 {CC "getBytecode", CC "(" HS_METHOD2 ")[B", FN_PTR(getBytecode)}, 3264 {CC "getExceptionTableStart", CC "(" HS_METHOD2 ")J", FN_PTR(getExceptionTableStart)}, 3265 {CC "getExceptionTableLength", CC "(" HS_METHOD2 ")I", FN_PTR(getExceptionTableLength)}, 3266 {CC "findUniqueConcreteMethod", CC "(" HS_KLASS2 HS_METHOD2 ")" HS_METHOD, FN_PTR(findUniqueConcreteMethod)}, 3267 {CC "getImplementor", CC "(" HS_KLASS2 ")" HS_KLASS, FN_PTR(getImplementor)}, 3268 {CC "getStackTraceElement", CC "(" HS_METHOD2 "I)" STACK_TRACE_ELEMENT, FN_PTR(getStackTraceElement)}, 3269 {CC "methodIsIgnoredBySecurityStackWalk", CC "(" HS_METHOD2 ")Z", FN_PTR(methodIsIgnoredBySecurityStackWalk)}, 3270 {CC "setNotInlinableOrCompilable", CC "(" HS_METHOD2 ")V", FN_PTR(setNotInlinableOrCompilable)}, 3271 {CC "isCompilable", CC "(" HS_METHOD2 ")Z", FN_PTR(isCompilable)}, 3272 {CC "hasNeverInlineDirective", CC "(" HS_METHOD2 ")Z", FN_PTR(hasNeverInlineDirective)}, 3273 {CC "shouldInlineMethod", CC "(" HS_METHOD2 ")Z", FN_PTR(shouldInlineMethod)}, 3274 {CC "lookupType", CC "(" STRING HS_KLASS2 "IZ)" HS_RESOLVED_TYPE, FN_PTR(lookupType)}, 3275 {CC "lookupJClass", CC "(J)" HS_RESOLVED_TYPE, FN_PTR(lookupJClass)}, 3276 {CC "getJObjectValue", CC "(" OBJECTCONSTANT ")J", FN_PTR(getJObjectValue)}, 3277 {CC "getArrayType", CC "(C" HS_KLASS2 ")" HS_KLASS, FN_PTR(getArrayType)}, 3278 {CC "lookupClass", CC "(" CLASS ")" HS_RESOLVED_TYPE, FN_PTR(lookupClass)}, 3279 {CC "lookupNameInPool", CC "(" HS_CONSTANT_POOL2 "II)" STRING, FN_PTR(lookupNameInPool)}, 3280 {CC "lookupNameAndTypeRefIndexInPool", CC "(" HS_CONSTANT_POOL2 "II)I", FN_PTR(lookupNameAndTypeRefIndexInPool)}, 3281 {CC "lookupSignatureInPool", CC "(" HS_CONSTANT_POOL2 "II)" STRING, FN_PTR(lookupSignatureInPool)}, 3282 {CC "lookupKlassRefIndexInPool", CC "(" HS_CONSTANT_POOL2 "II)I", FN_PTR(lookupKlassRefIndexInPool)}, 3283 {CC "lookupKlassInPool", CC "(" HS_CONSTANT_POOL2 "I)Ljava/lang/Object;", FN_PTR(lookupKlassInPool)}, 3284 {CC "lookupAppendixInPool", CC "(" HS_CONSTANT_POOL2 "II)" OBJECTCONSTANT, FN_PTR(lookupAppendixInPool)}, 3285 {CC "lookupMethodInPool", CC "(" HS_CONSTANT_POOL2 "IB" HS_METHOD2 ")" HS_METHOD, FN_PTR(lookupMethodInPool)}, 3286 {CC "lookupConstantInPool", CC "(" HS_CONSTANT_POOL2 "IZ)" JAVACONSTANT, FN_PTR(lookupConstantInPool)}, 3287 {CC "resolveBootstrapMethod", CC "(" HS_CONSTANT_POOL2 "I)[" OBJECT, FN_PTR(resolveBootstrapMethod)}, 3288 {CC "bootstrapArgumentIndexAt", CC "(" HS_CONSTANT_POOL2 "II)I", FN_PTR(bootstrapArgumentIndexAt)}, 3289 {CC "getUncachedStringInPool", CC "(" HS_CONSTANT_POOL2 "I)" JAVACONSTANT, FN_PTR(getUncachedStringInPool)}, 3290 {CC "resolveTypeInPool", CC "(" HS_CONSTANT_POOL2 "I)" HS_KLASS, FN_PTR(resolveTypeInPool)}, 3291 {CC "resolveFieldInPool", CC "(" HS_CONSTANT_POOL2 "I" HS_METHOD2 "B[I)" HS_KLASS, FN_PTR(resolveFieldInPool)}, 3292 {CC "decodeFieldIndexToCPIndex", CC "(" HS_CONSTANT_POOL2 "I)I", FN_PTR(decodeFieldIndexToCPIndex)}, 3293 {CC "decodeMethodIndexToCPIndex", CC "(" HS_CONSTANT_POOL2 "I)I", FN_PTR(decodeMethodIndexToCPIndex)}, 3294 {CC "decodeIndyIndexToCPIndex", CC "(" HS_CONSTANT_POOL2 "IZ)I", FN_PTR(decodeIndyIndexToCPIndex)}, 3295 {CC "resolveInvokeHandleInPool", CC "(" HS_CONSTANT_POOL2 "I)V", FN_PTR(resolveInvokeHandleInPool)}, 3296 {CC "isResolvedInvokeHandleInPool", CC "(" HS_CONSTANT_POOL2 "II)I", FN_PTR(isResolvedInvokeHandleInPool)}, 3297 {CC "resolveMethod", CC "(" HS_KLASS2 HS_METHOD2 HS_KLASS2 ")" HS_METHOD, FN_PTR(resolveMethod)}, 3298 {CC "getSignaturePolymorphicHolders", CC "()[" STRING, FN_PTR(getSignaturePolymorphicHolders)}, 3299 {CC "getVtableIndexForInterfaceMethod", CC "(" HS_KLASS2 HS_METHOD2 ")I", FN_PTR(getVtableIndexForInterfaceMethod)}, 3300 {CC "getClassInitializer", CC "(" HS_KLASS2 ")" HS_METHOD, FN_PTR(getClassInitializer)}, 3301 {CC "hasFinalizableSubclass", CC "(" HS_KLASS2 ")Z", FN_PTR(hasFinalizableSubclass)}, 3302 {CC "getMaxCallTargetOffset", CC "(J)J", FN_PTR(getMaxCallTargetOffset)}, 3303 {CC "asResolvedJavaMethod", CC "(" EXECUTABLE ")" HS_METHOD, FN_PTR(asResolvedJavaMethod)}, 3304 {CC "getResolvedJavaMethod", CC "(" OBJECTCONSTANT "J)" HS_METHOD, FN_PTR(getResolvedJavaMethod)}, 3305 {CC "getConstantPool", CC "(" OBJECT "JZ)" HS_CONSTANT_POOL, FN_PTR(getConstantPool)}, 3306 {CC "getResolvedJavaType0", CC "(Ljava/lang/Object;JZ)" HS_KLASS, FN_PTR(getResolvedJavaType0)}, 3307 {CC "readConfiguration", CC "()[" OBJECT, FN_PTR(readConfiguration)}, 3308 {CC "installCode0", CC "(JJZ" HS_COMPILED_CODE "[" OBJECT INSTALLED_CODE "J[B)I", FN_PTR(installCode0)}, 3309 {CC "getInstallCodeFlags", CC "()I", FN_PTR(getInstallCodeFlags)}, 3310 {CC "resetCompilationStatistics", CC "()V", FN_PTR(resetCompilationStatistics)}, 3311 {CC "disassembleCodeBlob", CC "(" INSTALLED_CODE ")" STRING, FN_PTR(disassembleCodeBlob)}, 3312 {CC "executeHotSpotNmethod", CC "([" OBJECT HS_NMETHOD ")" OBJECT, FN_PTR(executeHotSpotNmethod)}, 3313 {CC "getLineNumberTable", CC "(" HS_METHOD2 ")[J", FN_PTR(getLineNumberTable)}, 3314 {CC "getLocalVariableTableStart", CC "(" HS_METHOD2 ")J", FN_PTR(getLocalVariableTableStart)}, 3315 {CC "getLocalVariableTableLength", CC "(" HS_METHOD2 ")I", FN_PTR(getLocalVariableTableLength)}, 3316 {CC "reprofile", CC "(" HS_METHOD2 ")V", FN_PTR(reprofile)}, 3317 {CC "invalidateHotSpotNmethod", CC "(" HS_NMETHOD "Z)V", FN_PTR(invalidateHotSpotNmethod)}, 3318 {CC "collectCounters", CC "()[J", FN_PTR(collectCounters)}, 3319 {CC "getCountersSize", CC "()I", FN_PTR(getCountersSize)}, 3320 {CC "setCountersSize", CC "(I)Z", FN_PTR(setCountersSize)}, 3321 {CC "allocateCompileId", CC "(" HS_METHOD2 "I)I", FN_PTR(allocateCompileId)}, 3322 {CC "isMature", CC "(J)Z", FN_PTR(isMature)}, 3323 {CC "hasCompiledCodeForOSR", CC "(" HS_METHOD2 "II)Z", FN_PTR(hasCompiledCodeForOSR)}, 3324 {CC "getSymbol", CC "(J)" STRING, FN_PTR(getSymbol)}, 3325 {CC "getSignatureName", CC "(J)" STRING, FN_PTR(getSignatureName)}, 3326 {CC "iterateFrames", CC "([" RESOLVED_METHOD "[" RESOLVED_METHOD "I" INSPECTED_FRAME_VISITOR ")" OBJECT, FN_PTR(iterateFrames)}, 3327 {CC "materializeVirtualObjects", CC "(" HS_STACK_FRAME_REF "Z)V", FN_PTR(materializeVirtualObjects)}, 3328 {CC "shouldDebugNonSafepoints", CC "()Z", FN_PTR(shouldDebugNonSafepoints)}, 3329 {CC "writeDebugOutput", CC "(JIZ)V", FN_PTR(writeDebugOutput)}, 3330 {CC "flushDebugOutput", CC "()V", FN_PTR(flushDebugOutput)}, 3331 {CC "methodDataProfileDataSize", CC "(JI)I", FN_PTR(methodDataProfileDataSize)}, 3332 {CC "methodDataExceptionSeen", CC "(JI)I", FN_PTR(methodDataExceptionSeen)}, 3333 {CC "interpreterFrameSize", CC "(" BYTECODE_FRAME ")I", FN_PTR(interpreterFrameSize)}, 3334 {CC "compileToBytecode", CC "(" OBJECTCONSTANT ")V", FN_PTR(compileToBytecode)}, 3335 {CC "getFlagValue", CC "(" STRING ")" OBJECT, FN_PTR(getFlagValue)}, 3336 {CC "getInterfaces", CC "(" HS_KLASS2 ")[" HS_KLASS, FN_PTR(getInterfaces)}, 3337 {CC "getComponentType", CC "(" HS_KLASS2 ")" HS_RESOLVED_TYPE, FN_PTR(getComponentType)}, 3338 {CC "ensureInitialized", CC "(" HS_KLASS2 ")V", FN_PTR(ensureInitialized)}, 3339 {CC "ensureLinked", CC "(" HS_KLASS2 ")V", FN_PTR(ensureLinked)}, 3340 {CC "getIdentityHashCode", CC "(" OBJECTCONSTANT ")I", FN_PTR(getIdentityHashCode)}, 3341 {CC "isInternedString", CC "(" OBJECTCONSTANT ")Z", FN_PTR(isInternedString)}, 3342 {CC "unboxPrimitive", CC "(" OBJECTCONSTANT ")" OBJECT, FN_PTR(unboxPrimitive)}, 3343 {CC "boxPrimitive", CC "(" OBJECT ")" OBJECTCONSTANT, FN_PTR(boxPrimitive)}, 3344 {CC "getDeclaredConstructors", CC "(" HS_KLASS2 ")[" RESOLVED_METHOD, FN_PTR(getDeclaredConstructors)}, 3345 {CC "getDeclaredMethods", CC "(" HS_KLASS2 ")[" RESOLVED_METHOD, FN_PTR(getDeclaredMethods)}, 3346 {CC "getDeclaredFieldsInfo", CC "(" HS_KLASS2 ")[" FIELDINFO, FN_PTR(getDeclaredFieldsInfo)}, 3347 {CC "readStaticFieldValue", CC "(" HS_KLASS2 "JC)" JAVACONSTANT, FN_PTR(readStaticFieldValue)}, 3348 {CC "readFieldValue", CC "(" OBJECTCONSTANT HS_KLASS2 "JC)" JAVACONSTANT, FN_PTR(readFieldValue)}, 3349 {CC "isInstance", CC "(" HS_KLASS2 OBJECTCONSTANT ")Z", FN_PTR(isInstance)}, 3350 {CC "isAssignableFrom", CC "(" HS_KLASS2 HS_KLASS2 ")Z", FN_PTR(isAssignableFrom)}, 3351 {CC "isTrustedForIntrinsics", CC "(" HS_KLASS2 ")Z", FN_PTR(isTrustedForIntrinsics)}, 3352 {CC "asJavaType", CC "(" OBJECTCONSTANT ")" HS_RESOLVED_TYPE, FN_PTR(asJavaType)}, 3353 {CC "asString", CC "(" OBJECTCONSTANT ")" STRING, FN_PTR(asString)}, 3354 {CC "equals", CC "(" OBJECTCONSTANT "J" OBJECTCONSTANT "J)Z", FN_PTR(equals)}, 3355 {CC "getJavaMirror", CC "(" HS_KLASS2 ")" OBJECTCONSTANT, FN_PTR(getJavaMirror)}, 3356 {CC "getArrayLength", CC "(" OBJECTCONSTANT ")I", FN_PTR(getArrayLength)}, 3357 {CC "readArrayElement", CC "(" OBJECTCONSTANT "I)Ljava/lang/Object;", FN_PTR(readArrayElement)}, 3358 {CC "arrayBaseOffset", CC "(C)I", FN_PTR(arrayBaseOffset)}, 3359 {CC "arrayIndexScale", CC "(C)I", FN_PTR(arrayIndexScale)}, 3360 {CC "clearOopHandle", CC "(J)V", FN_PTR(clearOopHandle)}, 3361 {CC "releaseClearedOopHandles", CC "()V", FN_PTR(releaseClearedOopHandles)}, 3362 {CC "registerNativeMethods", CC "(" CLASS ")[J", FN_PTR(registerNativeMethods)}, 3363 {CC "isCurrentThreadAttached", CC "()Z", FN_PTR(isCurrentThreadAttached)}, 3364 {CC "getCurrentJavaThread", CC "()J", FN_PTR(getCurrentJavaThread)}, 3365 {CC "attachCurrentThread", CC "([BZ[J)Z", FN_PTR(attachCurrentThread)}, 3366 {CC "detachCurrentThread", CC "(Z)Z", FN_PTR(detachCurrentThread)}, 3367 {CC "translate", CC "(" OBJECT "Z)J", FN_PTR(translate)}, 3368 {CC "unhand", CC "(J)" OBJECT, FN_PTR(unhand)}, 3369 {CC "updateHotSpotNmethod", CC "(" HS_NMETHOD ")V", FN_PTR(updateHotSpotNmethod)}, 3370 {CC "getCode", CC "(" HS_INSTALLED_CODE ")[B", FN_PTR(getCode)}, 3371 {CC "asReflectionExecutable", CC "(" HS_METHOD2 ")" REFLECTION_EXECUTABLE, FN_PTR(asReflectionExecutable)}, 3372 {CC "asReflectionField", CC "(" HS_KLASS2 "I)" REFLECTION_FIELD, FN_PTR(asReflectionField)}, 3373 {CC "getEncodedClassAnnotationData", CC "(" HS_KLASS2 OBJECT "IJ)[B", FN_PTR(getEncodedClassAnnotationData)}, 3374 {CC "getEncodedExecutableAnnotationData", CC "(" HS_METHOD2 OBJECT "IJ)[B", FN_PTR(getEncodedExecutableAnnotationData)}, 3375 {CC "getEncodedFieldAnnotationData", CC "(" HS_KLASS2 "I" OBJECT "IJ)[B", FN_PTR(getEncodedFieldAnnotationData)}, 3376 {CC "getFailedSpeculations", CC "(J[[B)[[B", FN_PTR(getFailedSpeculations)}, 3377 {CC "getFailedSpeculationsAddress", CC "(" HS_METHOD2 ")J", FN_PTR(getFailedSpeculationsAddress)}, 3378 {CC "releaseFailedSpeculations", CC "(J)V", FN_PTR(releaseFailedSpeculations)}, 3379 {CC "addFailedSpeculation", CC "(J[B)Z", FN_PTR(addFailedSpeculation)}, 3380 {CC "callSystemExit", CC "(I)V", FN_PTR(callSystemExit)}, 3381 {CC "ticksNow", CC "()J", FN_PTR(ticksNow)}, 3382 {CC "getThreadLocalObject", CC "(I)" OBJECT, FN_PTR(getThreadLocalObject)}, 3383 {CC "setThreadLocalObject", CC "(I" OBJECT ")V", FN_PTR(setThreadLocalObject)}, 3384 {CC "getThreadLocalLong", CC "(I)J", FN_PTR(getThreadLocalLong)}, 3385 {CC "setThreadLocalLong", CC "(IJ)V", FN_PTR(setThreadLocalLong)}, 3386 {CC "registerCompilerPhase", CC "(" STRING ")I", FN_PTR(registerCompilerPhase)}, 3387 {CC "notifyCompilerPhaseEvent", CC "(JIII)V", FN_PTR(notifyCompilerPhaseEvent)}, 3388 {CC "notifyCompilerInliningEvent", CC "(I" HS_METHOD2 HS_METHOD2 "ZLjava/lang/String;I)V", FN_PTR(notifyCompilerInliningEvent)}, 3389 {CC "getOopMapAt", CC "(" HS_METHOD2 "I[J)V", FN_PTR(getOopMapAt)}, 3390 }; 3391 3392 int CompilerToVM::methods_count() { 3393 return sizeof(methods) / sizeof(JNINativeMethod); 3394 }