1 /* 2 * Copyright (c) 2001, 2026, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 #include "classfile/javaClasses.inline.hpp" 26 #include "classfile/vmClasses.hpp" 27 #include "classfile/vmSymbols.hpp" 28 #include "jni.h" 29 #include "jvm.h" 30 #include "logging/log.hpp" 31 #include "logging/logTag.hpp" 32 #include "memory/allocation.inline.hpp" 33 #include "memory/guardedMemory.hpp" 34 #include "oops/instanceKlass.hpp" 35 #include "oops/oop.inline.hpp" 36 #include "oops/symbol.hpp" 37 #include "prims/jniCheck.hpp" 38 #include "prims/jvm_misc.hpp" 39 #include "runtime/fieldDescriptor.inline.hpp" 40 #include "runtime/handles.inline.hpp" 41 #include "runtime/interfaceSupport.inline.hpp" 42 #include "runtime/javaThread.hpp" 43 #include "runtime/jfieldIDWorkaround.hpp" 44 #include "runtime/jniHandles.inline.hpp" 45 #include "utilities/formatBuffer.hpp" 46 #include "utilities/utf8.hpp" 47 48 // Heap objects are allowed to be directly referenced only in VM code, 49 // not in native code. 50 51 #define ASSERT_OOPS_ALLOWED \ 52 assert(JavaThread::current()->thread_state() == _thread_in_vm, \ 53 "jniCheck examining oops in bad state.") 54 55 56 // Execute the given block of source code with the thread in VM state. 57 // To do this, transition from the NATIVE state to the VM state, execute 58 // the code, and transition back. The ThreadInVMfromNative constructor 59 // performs the transition to VM state, its destructor restores the 60 // NATIVE state. 61 62 #define IN_VM(source_code) { \ 63 { \ 64 ThreadInVMfromNative __tiv(thr); \ 65 source_code \ 66 } \ 67 } 68 69 70 /* 71 * DECLARATIONS 72 */ 73 74 static struct JNINativeInterface_ * unchecked_jni_NativeInterface; 75 76 77 /* 78 * MACRO DEFINITIONS 79 */ 80 81 // All JNI checked functions here use JNI_ENTRY_CHECKED() instead of the 82 // QUICK_ENTRY or LEAF variants found in jni.cpp. This allows handles 83 // to be created if a fatal error should occur. 84 85 // Check for thread not attached to VM; need to catch this before 86 // assertions in the wrapper routines might fire 87 88 // Check for env being the one value appropriate for this thread. 89 90 #define JNI_ENTRY_CHECKED(result_type, header) \ 91 extern "C" { \ 92 result_type JNICALL header { \ 93 Thread* cur = Thread::current_or_null(); \ 94 if (cur == nullptr || !cur->is_Java_thread()) { \ 95 tty->print_cr("%s", fatal_using_jnienv_in_nonjava); \ 96 os::abort(true); \ 97 } \ 98 JavaThread* thr = JavaThread::cast(cur); \ 99 JNIEnv* xenv = thr->jni_environment(); \ 100 if (env != xenv) { \ 101 NativeReportJNIFatalError(thr, warn_wrong_jnienv); \ 102 } \ 103 MACOS_AARCH64_ONLY(ThreadWXEnable __wx(WXWrite, thr)); \ 104 VM_ENTRY_BASE(result_type, header, thr) 105 106 107 #define UNCHECKED() (unchecked_jni_NativeInterface) 108 109 static const char * warn_wrong_jnienv = "Using JNIEnv in the wrong thread"; 110 static const char * warn_bad_class_descriptor1 = "JNI FindClass received a bad class descriptor \""; 111 static const char * warn_bad_class_descriptor2 = "\". A correct class descriptor " \ 112 "has no leading \"L\" or trailing \";\". Incorrect descriptors will not be accepted in future releases."; 113 static const char * fatal_using_jnienv_in_nonjava = "FATAL ERROR in native method: Using JNIEnv in non-Java thread"; 114 static const char * warn_other_function_in_critical = "Warning: Calling other JNI functions in the scope of " \ 115 "Get/ReleasePrimitiveArrayCritical or Get/ReleaseStringCritical"; 116 static const char * fatal_bad_ref_to_jni = "Bad global or local ref passed to JNI"; 117 static const char * fatal_received_null_class = "JNI received a null class"; 118 static const char * fatal_class_not_a_class = "JNI received a class argument that is not a class"; 119 static const char * fatal_class_not_a_throwable_class = "JNI Throw or ThrowNew received a class argument that is not a Throwable or Throwable subclass"; 120 static const char * fatal_wrong_class_or_method = "Wrong object class or methodID passed to JNI call"; 121 static const char * fatal_non_weak_method = "non-weak methodID passed to JNI call"; 122 static const char * fatal_unknown_array_object = "Unknown array object passed to JNI array operations"; 123 static const char * fatal_object_array_expected = "Object array expected but not received for JNI array operation"; 124 static const char * fatal_prim_type_array_expected = "Primitive type array expected but not received for JNI array operation"; 125 static const char * fatal_non_array = "Non-array passed to JNI array operations"; 126 static const char * fatal_element_type_mismatch = "Array element type mismatch in JNI"; 127 static const char * fatal_should_be_static = "Non-static field ID passed to JNI"; 128 static const char * fatal_wrong_static_field = "Wrong static field ID passed to JNI"; 129 static const char * fatal_static_field_not_found = "Static field not found in JNI get/set field operations"; 130 static const char * fatal_static_field_mismatch = "Field type (static) mismatch in JNI get/set field operations"; 131 static const char * fatal_should_be_nonstatic = "Static field ID passed to JNI"; 132 static const char * fatal_null_object = "Null object passed to JNI"; 133 static const char * fatal_wrong_field = "Wrong field ID passed to JNI"; 134 static const char * fatal_instance_field_not_found = "Instance field not found in JNI get/set field operations"; 135 static const char * fatal_instance_field_mismatch = "Field type (instance) mismatch in JNI get/set field operations"; 136 static const char * fatal_non_string = "JNI string operation received a non-string"; 137 static const char * fatal_non_utf8_class_name1 = "JNI class name is not a valid UTF8 string \""; 138 static const char * fatal_non_utf8_class_name2 = "\""; 139 140 141 // When in VM state: 142 static void ReportJNIWarning(JavaThread* thr, const char *msg) { 143 tty->print_cr("WARNING in native method: %s", msg); 144 thr->print_jni_stack(); 145 } 146 147 // When in NATIVE state: 148 static void NativeReportJNIFatalError(JavaThread* thr, const char *msg) { 149 IN_VM( 150 ReportJNIFatalError(thr, msg); 151 ) 152 } 153 154 static void NativeReportJNIWarning(JavaThread* thr, const char *msg) { 155 IN_VM( 156 ReportJNIWarning(thr, msg); 157 ) 158 } 159 160 161 162 163 /* 164 * SUPPORT FUNCTIONS 165 */ 166 167 /** 168 * Check whether or not a programmer has actually checked for exceptions. According 169 * to the JNI Specification ("jni/spec/design.html#java_exceptions"): 170 * 171 * There are two cases where the programmer needs to check for exceptions without 172 * being able to first check an error code: 173 * 174 * - The JNI functions that invoke a Java method return the result of the Java method. 175 * The programmer must call ExceptionOccurred() to check for possible exceptions 176 * that occurred during the execution of the Java method. 177 * 178 * - Some of the JNI array access functions do not return an error code, but may 179 * throw an ArrayIndexOutOfBoundsException or ArrayStoreException. 180 * 181 * In all other cases, a non-error return value guarantees that no exceptions have been thrown. 182 * 183 * Programmers often defend against ArrayIndexOutOfBoundsException, so warning 184 * for these functions would be pedantic. 185 */ 186 static inline void 187 check_pending_exception(JavaThread* thr) { 188 if (thr->has_pending_exception()) { 189 NativeReportJNIWarning(thr, "JNI call made with exception pending"); 190 } 191 if (thr->is_pending_jni_exception_check()) { 192 IN_VM( 193 tty->print_cr("WARNING in native method: JNI call made without checking exceptions when required to from %s", 194 thr->get_pending_jni_exception_check()); 195 thr->print_jni_stack(); 196 ) 197 thr->clear_pending_jni_exception_check(); // Just complain once 198 } 199 } 200 201 static inline void 202 functionEnterCritical(JavaThread* thr) 203 { 204 check_pending_exception(thr); 205 } 206 207 static inline void 208 functionEnterCriticalExceptionAllowed(JavaThread* thr) 209 { 210 } 211 212 static inline void 213 functionEnter(JavaThread* thr) 214 { 215 if (thr->in_critical()) { 216 tty->print_cr("%s", warn_other_function_in_critical); 217 } 218 check_pending_exception(thr); 219 } 220 221 static inline void 222 functionEnterExceptionAllowed(JavaThread* thr) 223 { 224 if (thr->in_critical()) { 225 tty->print_cr("%s", warn_other_function_in_critical); 226 } 227 } 228 229 static inline void 230 functionExit(JavaThread* thr) 231 { 232 // No checks at this time 233 } 234 235 static inline void 236 checkStaticFieldID(JavaThread* thr, jfieldID fid, jclass cls, int ftype, bool setter) 237 { 238 fieldDescriptor fd; 239 240 /* make sure it is a static field */ 241 if (!jfieldIDWorkaround::is_static_jfieldID(fid)) 242 ReportJNIFatalError(thr, fatal_should_be_static); 243 244 /* validate the class being passed */ 245 ASSERT_OOPS_ALLOWED; 246 Klass* k_oop = jniCheck::validate_class(thr, cls, false); 247 248 /* check for proper subclass hierarchy */ 249 JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fid); 250 Klass* f_oop = id->holder(); 251 if (!k_oop->is_subtype_of(f_oop)) 252 ReportJNIFatalError(thr, fatal_wrong_static_field); 253 254 /* check for proper field type */ 255 if (!id->find_local_field(&fd)) 256 ReportJNIFatalError(thr, fatal_static_field_not_found); 257 if ((fd.field_type() != ftype) && 258 !(fd.field_type() == T_ARRAY && ftype == T_OBJECT)) { 259 ReportJNIFatalError(thr, fatal_static_field_mismatch); 260 } 261 262 /* check if setting a final field */ 263 if (setter && fd.is_final() && !fd.is_mutable_static_final()) { 264 ResourceMark rm(thr); 265 stringStream ss; 266 ss.print("SetStatic<Type>Field called to mutate final static field %s.%s", k_oop->external_name(), fd.name()->as_C_string()); 267 ReportJNIWarning(thr, ss.as_string()); 268 } 269 } 270 271 static inline void 272 checkInstanceFieldID(JavaThread* thr, jfieldID fid, jobject obj, int ftype, bool setter) 273 { 274 fieldDescriptor fd; 275 276 /* make sure it is an instance field */ 277 if (jfieldIDWorkaround::is_static_jfieldID(fid)) 278 ReportJNIFatalError(thr, fatal_should_be_nonstatic); 279 280 /* validate the object being passed and then get its class */ 281 ASSERT_OOPS_ALLOWED; 282 oop oopObj = jniCheck::validate_object(thr, obj); 283 if (oopObj == nullptr) { 284 ReportJNIFatalError(thr, fatal_null_object); 285 } 286 Klass* k_oop = oopObj->klass(); 287 288 if (!jfieldIDWorkaround::is_valid_jfieldID(k_oop, fid)) { 289 ReportJNIFatalError(thr, fatal_wrong_field); 290 } 291 292 /* make sure the field exists */ 293 int offset = jfieldIDWorkaround::from_instance_jfieldID(k_oop, fid); 294 if (!InstanceKlass::cast(k_oop)->contains_field_offset(offset)) 295 ReportJNIFatalError(thr, fatal_wrong_field); 296 297 /* check for proper field type */ 298 if (!InstanceKlass::cast(k_oop)->find_field_from_offset(offset, false, &fd)) 299 ReportJNIFatalError(thr, fatal_instance_field_not_found); 300 301 if ((fd.field_type() != ftype) && 302 !(fd.field_type() == T_ARRAY && ftype == T_OBJECT)) { 303 ReportJNIFatalError(thr, fatal_instance_field_mismatch); 304 } 305 306 /* check if setting a final field */ 307 if (setter && fd.is_final()) { 308 ResourceMark rm(thr); 309 stringStream ss; 310 ss.print("Set<Type>Field called to mutate final instance field %s.%s", k_oop->external_name(), fd.name()->as_C_string()); 311 ReportJNIWarning(thr, ss.as_string()); 312 } 313 } 314 315 static inline void 316 checkString(JavaThread* thr, jstring js) 317 { 318 ASSERT_OOPS_ALLOWED; 319 oop s = jniCheck::validate_object(thr, js); 320 if ((s == nullptr) || !java_lang_String::is_instance(s)) 321 ReportJNIFatalError(thr, fatal_non_string); 322 } 323 324 static inline arrayOop 325 check_is_array(JavaThread* thr, jarray jArray) 326 { 327 ASSERT_OOPS_ALLOWED; 328 arrayOop aOop; 329 330 aOop = (arrayOop)jniCheck::validate_object(thr, jArray); 331 if (aOop == nullptr || !aOop->is_array()) { 332 ReportJNIFatalError(thr, fatal_non_array); 333 } 334 return aOop; 335 } 336 337 static inline arrayOop 338 check_is_primitive_array(JavaThread* thr, jarray jArray) { 339 arrayOop aOop = check_is_array(thr, jArray); 340 341 if (!aOop->is_typeArray()) { 342 ReportJNIFatalError(thr, fatal_prim_type_array_expected); 343 } 344 return aOop; 345 } 346 347 static inline void 348 check_primitive_array_type(JavaThread* thr, jarray jArray, BasicType elementType) 349 { 350 BasicType array_type; 351 arrayOop aOop; 352 353 aOop = check_is_primitive_array(thr, jArray); 354 array_type = TypeArrayKlass::cast(aOop->klass())->element_type(); 355 if (array_type != elementType) { 356 ReportJNIFatalError(thr, fatal_element_type_mismatch); 357 } 358 } 359 360 static inline void 361 check_is_obj_array(JavaThread* thr, jarray jArray) { 362 arrayOop aOop = check_is_array(thr, jArray); 363 if (!aOop->is_objArray()) { 364 ReportJNIFatalError(thr, fatal_object_array_expected); 365 } 366 } 367 368 // Arbitrary (but well-known) tag for GetStringChars 369 const void* STRING_TAG = (void*)0x47114711; 370 371 // Arbitrary (but well-known) tag for GetStringUTFChars 372 const void* STRING_UTF_TAG = (void*) 0x48124812; 373 374 // Arbitrary (but well-known) tag for GetPrimitiveArrayCritical 375 const void* CRITICAL_TAG = (void*)0x49134913; 376 377 /* 378 * Copy and wrap array elements for bounds checking. 379 * Remember the original elements (GuardedMemory::get_tag()) 380 */ 381 static void* check_jni_wrap_copy_array(JavaThread* thr, jarray array, 382 void* orig_elements, jboolean is_critical = JNI_FALSE) { 383 void* result; 384 IN_VM( 385 oop a = JNIHandles::resolve_non_null(array); 386 size_t len = arrayOop(a)->length() << 387 TypeArrayKlass::cast(a->klass())->log2_element_size(); 388 result = GuardedMemory::wrap_copy(orig_elements, len, orig_elements, is_critical ? CRITICAL_TAG : nullptr); 389 ) 390 return result; 391 } 392 393 static void* check_wrapped_array(JavaThread* thr, const char* fn_name, 394 void* obj, void* carray, size_t* rsz, jboolean is_critical) { 395 if (carray == nullptr) { 396 tty->print_cr("%s: elements vector null" PTR_FORMAT, fn_name, p2i(obj)); 397 NativeReportJNIFatalError(thr, "Elements vector null"); 398 } 399 GuardedMemory guarded(carray); 400 void* orig_result = guarded.get_tag(); 401 if (!guarded.verify_guards()) { 402 tty->print_cr("%s: release array failed bounds check, incorrect pointer returned ? array: " 403 PTR_FORMAT " carray: " PTR_FORMAT, fn_name, p2i(obj), p2i(carray)); 404 DEBUG_ONLY(guarded.print_on(tty);) // This may crash. 405 NativeReportJNIFatalError(thr, err_msg("%s: failed bounds check", fn_name)); 406 } 407 if (orig_result == nullptr) { 408 tty->print_cr("%s: unrecognized elements. array: " PTR_FORMAT " carray: " PTR_FORMAT, 409 fn_name, p2i(obj), p2i(carray)); 410 DEBUG_ONLY(guarded.print_on(tty);) // This may crash. 411 NativeReportJNIFatalError(thr, err_msg("%s: unrecognized elements", fn_name)); 412 } 413 if (orig_result == STRING_TAG || orig_result == STRING_UTF_TAG) { 414 bool was_utf = orig_result == STRING_UTF_TAG; 415 tty->print_cr("%s: called on something allocated by %s", 416 fn_name, was_utf ? "GetStringUTFChars" : "GetStringChars"); 417 DEBUG_ONLY(guarded.print_on(tty);) // This may crash. 418 NativeReportJNIFatalError(thr, err_msg("%s called on something allocated by %s", 419 fn_name, was_utf ? "GetStringUTFChars" : "GetStringChars")); 420 } 421 422 if (is_critical && (guarded.get_tag2() != CRITICAL_TAG)) { 423 tty->print_cr("%s: called on something not allocated by GetPrimitiveArrayCritical", fn_name); 424 DEBUG_ONLY(guarded.print_on(tty);) // This may crash. 425 NativeReportJNIFatalError(thr, err_msg("%s called on something not allocated by GetPrimitiveArrayCritical", 426 fn_name)); 427 } 428 429 if (!is_critical && (guarded.get_tag2() == CRITICAL_TAG)) { 430 tty->print_cr("%s: called on something allocated by GetPrimitiveArrayCritical", fn_name); 431 DEBUG_ONLY(guarded.print_on(tty);) // This may crash. 432 NativeReportJNIFatalError(thr, err_msg("%s called on something allocated by GetPrimitiveArrayCritical", 433 fn_name)); 434 } 435 436 if (rsz != nullptr) { 437 *rsz = guarded.get_user_size(); 438 } 439 return orig_result; 440 } 441 442 static void* check_wrapped_array_release(JavaThread* thr, const char* fn_name, 443 void* obj, void* carray, jint mode, jboolean is_critical) { 444 size_t sz; 445 void* orig_result = check_wrapped_array(thr, fn_name, obj, carray, &sz, is_critical); 446 switch (mode) { 447 case 0: 448 memcpy(orig_result, carray, sz); 449 GuardedMemory::free_copy(carray); 450 break; 451 case JNI_COMMIT: 452 memcpy(orig_result, carray, sz); 453 if (is_critical) { 454 // For ReleasePrimitiveArrayCritical we must free the internal buffer 455 // allocated through GuardedMemory. 456 GuardedMemory::free_copy(carray); 457 } 458 break; 459 case JNI_ABORT: 460 GuardedMemory::free_copy(carray); 461 break; 462 default: 463 tty->print_cr("%s: Unrecognized mode %i releasing array " 464 PTR_FORMAT " elements " PTR_FORMAT, fn_name, mode, p2i(obj), p2i(carray)); 465 NativeReportJNIFatalError(thr, "Unrecognized array release mode"); 466 } 467 return orig_result; 468 } 469 470 oop jniCheck::validate_handle(JavaThread* thr, jobject obj) { 471 if ((obj != nullptr) && (JNIHandles::handle_type(thr, obj) != JNIInvalidRefType)) { 472 ASSERT_OOPS_ALLOWED; 473 return JNIHandles::resolve_external_guard(obj); 474 } 475 ReportJNIFatalError(thr, fatal_bad_ref_to_jni); 476 return nullptr; 477 } 478 479 480 Method* jniCheck::validate_jmethod_id(JavaThread* thr, jmethodID method_id) { 481 ASSERT_OOPS_ALLOWED; 482 // do the fast jmethodID check first 483 Method* m = Method::checked_resolve_jmethod_id(method_id); 484 if (m == nullptr) { 485 ReportJNIFatalError(thr, fatal_wrong_class_or_method); 486 } 487 // jmethodIDs are handles in the class loader data, 488 // but that can be expensive so check it last 489 else if (!Method::validate_jmethod_id(method_id)) { 490 ReportJNIFatalError(thr, fatal_non_weak_method); 491 } 492 return m; 493 } 494 495 496 oop jniCheck::validate_object(JavaThread* thr, jobject obj) { 497 if (obj == nullptr) return nullptr; 498 ASSERT_OOPS_ALLOWED; 499 oop oopObj = jniCheck::validate_handle(thr, obj); 500 if (oopObj == nullptr) { 501 ReportJNIFatalError(thr, fatal_bad_ref_to_jni); 502 } 503 return oopObj; 504 } 505 506 // Warn if a class descriptor is in decorated form; class descriptors 507 // passed to JNI findClass should not be decorated unless they are 508 // array descriptors. 509 void jniCheck::validate_class_descriptor(JavaThread* thr, const char* name) { 510 if (name == nullptr) return; // implementation accepts null so just return 511 512 size_t len = strlen(name); 513 514 if (len >= 2 && 515 name[0] == JVM_SIGNATURE_CLASS && // 'L' 516 name[len-1] == JVM_SIGNATURE_ENDCLASS ) { // ';' 517 char msg[JVM_MAXPATHLEN]; 518 jio_snprintf(msg, JVM_MAXPATHLEN, "%s%s%s", 519 warn_bad_class_descriptor1, name, warn_bad_class_descriptor2); 520 ReportJNIWarning(thr, msg); 521 } 522 523 // Verify that the class name given is a valid utf8 string 524 if (!UTF8::is_legal_utf8((const unsigned char*)name, strlen(name), false)) { 525 char msg[JVM_MAXPATHLEN]; 526 jio_snprintf(msg, JVM_MAXPATHLEN, "%s%s%s", fatal_non_utf8_class_name1, name, fatal_non_utf8_class_name2); 527 ReportJNIFatalError(thr, msg); 528 } 529 } 530 531 Klass* jniCheck::validate_class(JavaThread* thr, jclass clazz, bool allow_primitive) { 532 ASSERT_OOPS_ALLOWED; 533 oop mirror = jniCheck::validate_handle(thr, clazz); 534 if (mirror == nullptr) { 535 ReportJNIFatalError(thr, fatal_received_null_class); 536 } 537 538 if (mirror->klass() != vmClasses::Class_klass()) { 539 ReportJNIFatalError(thr, fatal_class_not_a_class); 540 } 541 542 Klass* k = java_lang_Class::as_Klass(mirror); 543 // Make allowances for primitive classes ... 544 if (!(k != nullptr || (allow_primitive && java_lang_Class::is_primitive(mirror)))) { 545 ReportJNIFatalError(thr, fatal_class_not_a_class); 546 } 547 return k; 548 } 549 550 void jniCheck::validate_throwable_klass(JavaThread* thr, Klass* klass) { 551 ASSERT_OOPS_ALLOWED; 552 assert(klass != nullptr, "klass argument must have a value"); 553 554 if (!klass->is_instance_klass() || 555 !klass->is_subclass_of(vmClasses::Throwable_klass())) { 556 ReportJNIFatalError(thr, fatal_class_not_a_throwable_class); 557 } 558 } 559 560 void jniCheck::validate_call(JavaThread* thr, jclass clazz, jmethodID method_id, jobject obj) { 561 ASSERT_OOPS_ALLOWED; 562 Method* m = jniCheck::validate_jmethod_id(thr, method_id); 563 InstanceKlass* holder = m->method_holder(); 564 565 if (clazz != nullptr) { 566 Klass* k = jniCheck::validate_class(thr, clazz, false); 567 // Check that method is in the class, must be InstanceKlass 568 if (!InstanceKlass::cast(k)->is_subtype_of(holder)) { 569 ReportJNIFatalError(thr, fatal_wrong_class_or_method); 570 } 571 } 572 573 if (obj != nullptr) { 574 oop recv = jniCheck::validate_object(thr, obj); 575 assert(recv != nullptr, "validate_object checks that"); 576 Klass* rk = recv->klass(); 577 578 // Check that the object is a subtype of method holder too. 579 if (!rk->is_subtype_of(holder)) { 580 ReportJNIFatalError(thr, fatal_wrong_class_or_method); 581 } 582 } 583 } 584 585 586 /* 587 * IMPLEMENTATION OF FUNCTIONS IN CHECKED TABLE 588 */ 589 590 JNI_ENTRY_CHECKED(jclass, 591 checked_jni_DefineClass(JNIEnv *env, 592 const char *name, 593 jobject loader, 594 const jbyte *buf, 595 jsize len)) 596 functionEnter(thr); 597 IN_VM( 598 jniCheck::validate_object(thr, loader); 599 ) 600 jclass result = UNCHECKED()->DefineClass(env, name, loader, buf, len); 601 functionExit(thr); 602 return result; 603 JNI_END 604 605 JNI_ENTRY_CHECKED(jclass, 606 checked_jni_FindClass(JNIEnv *env, 607 const char *name)) 608 functionEnter(thr); 609 IN_VM( 610 jniCheck::validate_class_descriptor(thr, name); 611 ) 612 jclass result = UNCHECKED()->FindClass(env, name); 613 functionExit(thr); 614 return result; 615 JNI_END 616 617 JNI_ENTRY_CHECKED(jmethodID, 618 checked_jni_FromReflectedMethod(JNIEnv *env, 619 jobject method)) 620 functionEnter(thr); 621 IN_VM( 622 jniCheck::validate_object(thr, method); 623 ) 624 jmethodID result = UNCHECKED()->FromReflectedMethod(env, method); 625 functionExit(thr); 626 return result; 627 JNI_END 628 629 JNI_ENTRY_CHECKED(jfieldID, 630 checked_jni_FromReflectedField(JNIEnv *env, 631 jobject field)) 632 functionEnter(thr); 633 IN_VM( 634 jniCheck::validate_object(thr, field); 635 ) 636 jfieldID result = UNCHECKED()->FromReflectedField(env, field); 637 functionExit(thr); 638 return result; 639 JNI_END 640 641 JNI_ENTRY_CHECKED(jobject, 642 checked_jni_ToReflectedMethod(JNIEnv *env, 643 jclass cls, 644 jmethodID methodID, 645 jboolean isStatic)) 646 functionEnter(thr); 647 IN_VM( 648 jniCheck::validate_call(thr, cls, methodID); 649 ) 650 jobject result = UNCHECKED()->ToReflectedMethod(env, cls, methodID, 651 isStatic); 652 functionExit(thr); 653 return result; 654 JNI_END 655 656 JNI_ENTRY_CHECKED(jclass, 657 checked_jni_GetSuperclass(JNIEnv *env, 658 jclass sub)) 659 functionEnter(thr); 660 IN_VM( 661 jniCheck::validate_class(thr, sub, true); 662 ) 663 jclass result = UNCHECKED()->GetSuperclass(env, sub); 664 functionExit(thr); 665 return result; 666 JNI_END 667 668 JNI_ENTRY_CHECKED(jboolean, 669 checked_jni_IsAssignableFrom(JNIEnv *env, 670 jclass sub, 671 jclass sup)) 672 functionEnter(thr); 673 IN_VM( 674 jniCheck::validate_class(thr, sub, true); 675 jniCheck::validate_class(thr, sup, true); 676 ) 677 jboolean result = UNCHECKED()->IsAssignableFrom(env, sub, sup); 678 functionExit(thr); 679 return result; 680 JNI_END 681 682 JNI_ENTRY_CHECKED(jobject, 683 checked_jni_ToReflectedField(JNIEnv *env, 684 jclass cls, 685 jfieldID fieldID, 686 jboolean isStatic)) 687 functionEnter(thr); 688 IN_VM( 689 jniCheck::validate_class(thr, cls, false); 690 ) 691 jobject result = UNCHECKED()->ToReflectedField(env, cls, fieldID, 692 isStatic); 693 functionExit(thr); 694 return result; 695 JNI_END 696 697 JNI_ENTRY_CHECKED(jint, 698 checked_jni_Throw(JNIEnv *env, 699 jthrowable obj)) 700 functionEnter(thr); 701 IN_VM( 702 oop oopObj = jniCheck::validate_object(thr, obj); 703 if (oopObj == nullptr) { 704 // Unchecked Throw tolerates a null obj, so just warn 705 ReportJNIWarning(thr, "JNI Throw called with null throwable"); 706 } else { 707 jniCheck::validate_throwable_klass(thr, oopObj->klass()); 708 } 709 ) 710 jint result = UNCHECKED()->Throw(env, obj); 711 functionExit(thr); 712 return result; 713 JNI_END 714 715 JNI_ENTRY_CHECKED(jint, 716 checked_jni_ThrowNew(JNIEnv *env, 717 jclass clazz, 718 const char *msg)) 719 functionEnter(thr); 720 IN_VM( 721 Klass* k = jniCheck::validate_class(thr, clazz, false); 722 assert(k != nullptr, "validate_class shouldn't return null Klass*"); 723 jniCheck::validate_throwable_klass(thr, k); 724 ) 725 jint result = UNCHECKED()->ThrowNew(env, clazz, msg); 726 functionExit(thr); 727 return result; 728 JNI_END 729 730 JNI_ENTRY_CHECKED(jthrowable, 731 checked_jni_ExceptionOccurred(JNIEnv *env)) 732 thr->clear_pending_jni_exception_check(); 733 functionEnterExceptionAllowed(thr); 734 jthrowable result = UNCHECKED()->ExceptionOccurred(env); 735 functionExit(thr); 736 return result; 737 JNI_END 738 739 JNI_ENTRY_CHECKED(void, 740 checked_jni_ExceptionDescribe(JNIEnv *env)) 741 functionEnterExceptionAllowed(thr); 742 UNCHECKED()->ExceptionDescribe(env); 743 functionExit(thr); 744 JNI_END 745 746 JNI_ENTRY_CHECKED(void, 747 checked_jni_ExceptionClear(JNIEnv *env)) 748 thr->clear_pending_jni_exception_check(); 749 functionEnterExceptionAllowed(thr); 750 UNCHECKED()->ExceptionClear(env); 751 functionExit(thr); 752 JNI_END 753 754 JNI_ENTRY_CHECKED(void, 755 checked_jni_FatalError(JNIEnv *env, 756 const char *msg)) 757 thr->clear_pending_jni_exception_check(); 758 functionEnter(thr); 759 UNCHECKED()->FatalError(env, msg); 760 functionExit(thr); 761 JNI_END 762 763 JNI_ENTRY_CHECKED(jint, 764 checked_jni_PushLocalFrame(JNIEnv *env, 765 jint capacity)) 766 functionEnterExceptionAllowed(thr); 767 if (capacity < 0) 768 NativeReportJNIFatalError(thr, "negative capacity"); 769 jint result = UNCHECKED()->PushLocalFrame(env, capacity); 770 functionExit(thr); 771 return result; 772 JNI_END 773 774 JNI_ENTRY_CHECKED(jobject, 775 checked_jni_PopLocalFrame(JNIEnv *env, 776 jobject result)) 777 functionEnterExceptionAllowed(thr); 778 jobject res = UNCHECKED()->PopLocalFrame(env, result); 779 functionExit(thr); 780 return res; 781 JNI_END 782 783 JNI_ENTRY_CHECKED(jobject, 784 checked_jni_NewGlobalRef(JNIEnv *env, 785 jobject lobj)) 786 functionEnter(thr); 787 IN_VM( 788 if (lobj != nullptr) { 789 jniCheck::validate_handle(thr, lobj); 790 } 791 ) 792 jobject result = UNCHECKED()->NewGlobalRef(env,lobj); 793 functionExit(thr); 794 return result; 795 JNI_END 796 797 JNI_ENTRY_CHECKED(void, 798 checked_jni_DeleteGlobalRef(JNIEnv *env, 799 jobject gref)) 800 functionEnterExceptionAllowed(thr); 801 IN_VM( 802 jniCheck::validate_object(thr, gref); 803 if (gref && !JNIHandles::is_global_handle(gref)) { 804 ReportJNIFatalError(thr, 805 "Invalid global JNI handle passed to DeleteGlobalRef"); 806 } 807 ) 808 UNCHECKED()->DeleteGlobalRef(env,gref); 809 functionExit(thr); 810 JNI_END 811 812 JNI_ENTRY_CHECKED(void, 813 checked_jni_DeleteLocalRef(JNIEnv *env, 814 jobject obj)) 815 functionEnterExceptionAllowed(thr); 816 IN_VM( 817 jniCheck::validate_object(thr, obj); 818 if (obj && !(JNIHandles::is_local_handle(thr, obj) || 819 JNIHandles::is_frame_handle(thr, obj))) 820 ReportJNIFatalError(thr, 821 "Invalid local JNI handle passed to DeleteLocalRef"); 822 ) 823 UNCHECKED()->DeleteLocalRef(env, obj); 824 functionExit(thr); 825 JNI_END 826 827 JNI_ENTRY_CHECKED(jboolean, 828 checked_jni_IsSameObject(JNIEnv *env, 829 jobject obj1, 830 jobject obj2)) 831 functionEnterExceptionAllowed(thr); 832 IN_VM( 833 /* This JNI function can be used to compare weak global references 834 * to nullptr objects. If the handles are valid, but contain nullptr, 835 * then don't attempt to validate the object. 836 */ 837 if (obj1 != nullptr && jniCheck::validate_handle(thr, obj1) != nullptr) { 838 jniCheck::validate_object(thr, obj1); 839 } 840 if (obj2 != nullptr && jniCheck::validate_handle(thr, obj2) != nullptr) { 841 jniCheck::validate_object(thr, obj2); 842 } 843 ) 844 jboolean result = UNCHECKED()->IsSameObject(env,obj1,obj2); 845 functionExit(thr); 846 return result; 847 JNI_END 848 849 JNI_ENTRY_CHECKED(jobject, 850 checked_jni_NewLocalRef(JNIEnv *env, 851 jobject ref)) 852 functionEnter(thr); 853 IN_VM( 854 if (ref != nullptr) { 855 jniCheck::validate_handle(thr, ref); 856 } 857 ) 858 jobject result = UNCHECKED()->NewLocalRef(env, ref); 859 functionExit(thr); 860 return result; 861 JNI_END 862 863 JNI_ENTRY_CHECKED(jint, 864 checked_jni_EnsureLocalCapacity(JNIEnv *env, 865 jint capacity)) 866 functionEnter(thr); 867 if (capacity < 0) { 868 NativeReportJNIFatalError(thr, "negative capacity"); 869 } 870 jint result = UNCHECKED()->EnsureLocalCapacity(env, capacity); 871 functionExit(thr); 872 return result; 873 JNI_END 874 875 JNI_ENTRY_CHECKED(jobject, 876 checked_jni_AllocObject(JNIEnv *env, 877 jclass clazz)) 878 functionEnter(thr); 879 IN_VM( 880 jniCheck::validate_class(thr, clazz, false); 881 ) 882 jobject result = UNCHECKED()->AllocObject(env,clazz); 883 functionExit(thr); 884 return result; 885 JNI_END 886 887 JNI_ENTRY_CHECKED(jobject, 888 checked_jni_NewObject(JNIEnv *env, 889 jclass clazz, 890 jmethodID methodID, 891 ...)) 892 functionEnter(thr); 893 va_list args; 894 IN_VM( 895 jniCheck::validate_call(thr, clazz, methodID); 896 ) 897 va_start(args, methodID); 898 jobject result = UNCHECKED()->NewObjectV(env,clazz,methodID,args); 899 va_end(args); 900 functionExit(thr); 901 return result; 902 JNI_END 903 904 JNI_ENTRY_CHECKED(jobject, 905 checked_jni_NewObjectV(JNIEnv *env, 906 jclass clazz, 907 jmethodID methodID, 908 va_list args)) 909 functionEnter(thr); 910 IN_VM( 911 jniCheck::validate_call(thr, clazz, methodID); 912 ) 913 jobject result = UNCHECKED()->NewObjectV(env,clazz,methodID,args); 914 functionExit(thr); 915 return result; 916 JNI_END 917 918 JNI_ENTRY_CHECKED(jobject, 919 checked_jni_NewObjectA(JNIEnv *env, 920 jclass clazz, 921 jmethodID methodID, 922 const jvalue *args)) 923 functionEnter(thr); 924 IN_VM( 925 jniCheck::validate_call(thr, clazz, methodID); 926 ) 927 jobject result = UNCHECKED()->NewObjectA(env,clazz,methodID,args); 928 functionExit(thr); 929 return result; 930 JNI_END 931 932 JNI_ENTRY_CHECKED(jclass, 933 checked_jni_GetObjectClass(JNIEnv *env, 934 jobject obj)) 935 functionEnter(thr); 936 IN_VM( 937 jniCheck::validate_object(thr, obj); 938 ) 939 jclass result = UNCHECKED()->GetObjectClass(env,obj); 940 functionExit(thr); 941 return result; 942 JNI_END 943 944 JNI_ENTRY_CHECKED(jboolean, 945 checked_jni_IsInstanceOf(JNIEnv *env, 946 jobject obj, 947 jclass clazz)) 948 functionEnter(thr); 949 IN_VM( 950 jniCheck::validate_object(thr, obj); 951 jniCheck::validate_class(thr, clazz, true); 952 ) 953 jboolean result = UNCHECKED()->IsInstanceOf(env,obj,clazz); 954 functionExit(thr); 955 return result; 956 JNI_END 957 958 JNI_ENTRY_CHECKED(jmethodID, 959 checked_jni_GetMethodID(JNIEnv *env, 960 jclass clazz, 961 const char *name, 962 const char *sig)) 963 functionEnter(thr); 964 IN_VM( 965 jniCheck::validate_class(thr, clazz, false); 966 ) 967 jmethodID result = UNCHECKED()->GetMethodID(env,clazz,name,sig); 968 functionExit(thr); 969 return result; 970 JNI_END 971 972 #define WRAPPER_CallMethod(ResultType, Result) \ 973 JNI_ENTRY_CHECKED(ResultType, \ 974 checked_jni_Call##Result##Method(JNIEnv *env, \ 975 jobject obj, \ 976 jmethodID methodID, \ 977 ...)) \ 978 functionEnter(thr); \ 979 va_list args; \ 980 IN_VM( \ 981 jniCheck::validate_call(thr, nullptr, methodID, obj); \ 982 ) \ 983 va_start(args,methodID); \ 984 ResultType result =UNCHECKED()->Call##Result##MethodV(env, obj, methodID, \ 985 args); \ 986 va_end(args); \ 987 thr->set_pending_jni_exception_check("Call"#Result"Method"); \ 988 functionExit(thr); \ 989 return result; \ 990 JNI_END \ 991 \ 992 JNI_ENTRY_CHECKED(ResultType, \ 993 checked_jni_Call##Result##MethodV(JNIEnv *env, \ 994 jobject obj, \ 995 jmethodID methodID, \ 996 va_list args)) \ 997 functionEnter(thr); \ 998 IN_VM(\ 999 jniCheck::validate_call(thr, nullptr, methodID, obj); \ 1000 ) \ 1001 ResultType result = UNCHECKED()->Call##Result##MethodV(env, obj, methodID,\ 1002 args); \ 1003 thr->set_pending_jni_exception_check("Call"#Result"MethodV"); \ 1004 functionExit(thr); \ 1005 return result; \ 1006 JNI_END \ 1007 \ 1008 JNI_ENTRY_CHECKED(ResultType, \ 1009 checked_jni_Call##Result##MethodA(JNIEnv *env, \ 1010 jobject obj, \ 1011 jmethodID methodID, \ 1012 const jvalue * args)) \ 1013 functionEnter(thr); \ 1014 IN_VM( \ 1015 jniCheck::validate_call(thr, nullptr, methodID, obj); \ 1016 ) \ 1017 ResultType result = UNCHECKED()->Call##Result##MethodA(env, obj, methodID,\ 1018 args); \ 1019 thr->set_pending_jni_exception_check("Call"#Result"MethodA"); \ 1020 functionExit(thr); \ 1021 return result; \ 1022 JNI_END 1023 1024 WRAPPER_CallMethod(jobject,Object) 1025 WRAPPER_CallMethod(jboolean,Boolean) 1026 WRAPPER_CallMethod(jbyte,Byte) 1027 WRAPPER_CallMethod(jshort,Short) 1028 WRAPPER_CallMethod(jchar,Char) 1029 WRAPPER_CallMethod(jint,Int) 1030 WRAPPER_CallMethod(jlong,Long) 1031 WRAPPER_CallMethod(jfloat,Float) 1032 WRAPPER_CallMethod(jdouble,Double) 1033 1034 JNI_ENTRY_CHECKED(void, 1035 checked_jni_CallVoidMethod(JNIEnv *env, \ 1036 jobject obj, \ 1037 jmethodID methodID, \ 1038 ...)) 1039 functionEnter(thr); 1040 va_list args; 1041 IN_VM( 1042 jniCheck::validate_call(thr, nullptr, methodID, obj); 1043 ) 1044 va_start(args,methodID); 1045 UNCHECKED()->CallVoidMethodV(env,obj,methodID,args); 1046 va_end(args); 1047 thr->set_pending_jni_exception_check("CallVoidMethod"); 1048 functionExit(thr); 1049 JNI_END 1050 1051 JNI_ENTRY_CHECKED(void, 1052 checked_jni_CallVoidMethodV(JNIEnv *env, 1053 jobject obj, 1054 jmethodID methodID, 1055 va_list args)) 1056 functionEnter(thr); 1057 IN_VM( 1058 jniCheck::validate_call(thr, nullptr, methodID, obj); 1059 ) 1060 UNCHECKED()->CallVoidMethodV(env,obj,methodID,args); 1061 thr->set_pending_jni_exception_check("CallVoidMethodV"); 1062 functionExit(thr); 1063 JNI_END 1064 1065 JNI_ENTRY_CHECKED(void, 1066 checked_jni_CallVoidMethodA(JNIEnv *env, 1067 jobject obj, 1068 jmethodID methodID, 1069 const jvalue * args)) 1070 functionEnter(thr); 1071 IN_VM( 1072 jniCheck::validate_call(thr, nullptr, methodID, obj); 1073 ) 1074 UNCHECKED()->CallVoidMethodA(env,obj,methodID,args); 1075 thr->set_pending_jni_exception_check("CallVoidMethodA"); 1076 functionExit(thr); 1077 JNI_END 1078 1079 #define WRAPPER_CallNonvirtualMethod(ResultType, Result) \ 1080 JNI_ENTRY_CHECKED(ResultType, \ 1081 checked_jni_CallNonvirtual##Result##Method(JNIEnv *env, \ 1082 jobject obj, \ 1083 jclass clazz, \ 1084 jmethodID methodID, \ 1085 ...)) \ 1086 functionEnter(thr); \ 1087 va_list args; \ 1088 IN_VM( \ 1089 jniCheck::validate_call(thr, clazz, methodID, obj); \ 1090 ) \ 1091 va_start(args,methodID); \ 1092 ResultType result = UNCHECKED()->CallNonvirtual##Result##MethodV(env, \ 1093 obj, \ 1094 clazz, \ 1095 methodID,\ 1096 args); \ 1097 va_end(args); \ 1098 thr->set_pending_jni_exception_check("CallNonvirtual"#Result"Method"); \ 1099 functionExit(thr); \ 1100 return result; \ 1101 JNI_END \ 1102 \ 1103 JNI_ENTRY_CHECKED(ResultType, \ 1104 checked_jni_CallNonvirtual##Result##MethodV(JNIEnv *env, \ 1105 jobject obj, \ 1106 jclass clazz, \ 1107 jmethodID methodID, \ 1108 va_list args)) \ 1109 functionEnter(thr); \ 1110 IN_VM( \ 1111 jniCheck::validate_call(thr, clazz, methodID, obj); \ 1112 ) \ 1113 ResultType result = UNCHECKED()->CallNonvirtual##Result##MethodV(env, \ 1114 obj, \ 1115 clazz, \ 1116 methodID,\ 1117 args); \ 1118 thr->set_pending_jni_exception_check("CallNonvirtual"#Result"MethodV"); \ 1119 functionExit(thr); \ 1120 return result; \ 1121 JNI_END \ 1122 \ 1123 JNI_ENTRY_CHECKED(ResultType, \ 1124 checked_jni_CallNonvirtual##Result##MethodA(JNIEnv *env, \ 1125 jobject obj, \ 1126 jclass clazz, \ 1127 jmethodID methodID, \ 1128 const jvalue * args)) \ 1129 functionEnter(thr); \ 1130 IN_VM( \ 1131 jniCheck::validate_call(thr, clazz, methodID, obj); \ 1132 ) \ 1133 ResultType result = UNCHECKED()->CallNonvirtual##Result##MethodA(env, \ 1134 obj, \ 1135 clazz, \ 1136 methodID,\ 1137 args); \ 1138 thr->set_pending_jni_exception_check("CallNonvirtual"#Result"MethodA"); \ 1139 functionExit(thr); \ 1140 return result; \ 1141 JNI_END 1142 1143 WRAPPER_CallNonvirtualMethod(jobject,Object) 1144 WRAPPER_CallNonvirtualMethod(jboolean,Boolean) 1145 WRAPPER_CallNonvirtualMethod(jbyte,Byte) 1146 WRAPPER_CallNonvirtualMethod(jshort,Short) 1147 WRAPPER_CallNonvirtualMethod(jchar,Char) 1148 WRAPPER_CallNonvirtualMethod(jint,Int) 1149 WRAPPER_CallNonvirtualMethod(jlong,Long) 1150 WRAPPER_CallNonvirtualMethod(jfloat,Float) 1151 WRAPPER_CallNonvirtualMethod(jdouble,Double) 1152 1153 JNI_ENTRY_CHECKED(void, 1154 checked_jni_CallNonvirtualVoidMethod(JNIEnv *env, 1155 jobject obj, 1156 jclass clazz, 1157 jmethodID methodID, 1158 ...)) 1159 functionEnter(thr); 1160 va_list args; 1161 IN_VM( 1162 jniCheck::validate_call(thr, clazz, methodID, obj); 1163 ) 1164 va_start(args,methodID); 1165 UNCHECKED()->CallNonvirtualVoidMethodV(env,obj,clazz,methodID,args); 1166 va_end(args); 1167 thr->set_pending_jni_exception_check("CallNonvirtualVoidMethod"); 1168 functionExit(thr); 1169 JNI_END 1170 1171 JNI_ENTRY_CHECKED(void, 1172 checked_jni_CallNonvirtualVoidMethodV(JNIEnv *env, 1173 jobject obj, 1174 jclass clazz, 1175 jmethodID methodID, 1176 va_list args)) 1177 functionEnter(thr); 1178 IN_VM( 1179 jniCheck::validate_call(thr, clazz, methodID, obj); 1180 ) 1181 UNCHECKED()->CallNonvirtualVoidMethodV(env,obj,clazz,methodID,args); 1182 thr->set_pending_jni_exception_check("CallNonvirtualVoidMethodV"); 1183 functionExit(thr); 1184 JNI_END 1185 1186 JNI_ENTRY_CHECKED(void, 1187 checked_jni_CallNonvirtualVoidMethodA(JNIEnv *env, 1188 jobject obj, 1189 jclass clazz, 1190 jmethodID methodID, 1191 const jvalue * args)) 1192 functionEnter(thr); 1193 IN_VM( 1194 jniCheck::validate_call(thr, clazz, methodID, obj); 1195 ) 1196 UNCHECKED()->CallNonvirtualVoidMethodA(env,obj,clazz,methodID,args); 1197 thr->set_pending_jni_exception_check("CallNonvirtualVoidMethodA"); 1198 functionExit(thr); 1199 JNI_END 1200 1201 JNI_ENTRY_CHECKED(jfieldID, 1202 checked_jni_GetFieldID(JNIEnv *env, 1203 jclass clazz, 1204 const char *name, 1205 const char *sig)) 1206 functionEnter(thr); 1207 IN_VM( 1208 jniCheck::validate_class(thr, clazz, false); 1209 ) 1210 jfieldID result = UNCHECKED()->GetFieldID(env,clazz,name,sig); 1211 functionExit(thr); 1212 return result; 1213 JNI_END 1214 1215 #define WRAPPER_GetField(ReturnType,Result,FieldType) \ 1216 JNI_ENTRY_CHECKED(ReturnType, \ 1217 checked_jni_Get##Result##Field(JNIEnv *env, \ 1218 jobject obj, \ 1219 jfieldID fieldID)) \ 1220 functionEnter(thr); \ 1221 IN_VM( \ 1222 checkInstanceFieldID(thr, fieldID, obj, FieldType, false); \ 1223 ) \ 1224 ReturnType result = UNCHECKED()->Get##Result##Field(env,obj,fieldID); \ 1225 functionExit(thr); \ 1226 return result; \ 1227 JNI_END 1228 1229 WRAPPER_GetField(jobject, Object, T_OBJECT) 1230 WRAPPER_GetField(jboolean, Boolean, T_BOOLEAN) 1231 WRAPPER_GetField(jbyte, Byte, T_BYTE) 1232 WRAPPER_GetField(jshort, Short, T_SHORT) 1233 WRAPPER_GetField(jchar, Char, T_CHAR) 1234 WRAPPER_GetField(jint, Int, T_INT) 1235 WRAPPER_GetField(jlong, Long, T_LONG) 1236 WRAPPER_GetField(jfloat, Float, T_FLOAT) 1237 WRAPPER_GetField(jdouble, Double, T_DOUBLE) 1238 1239 #define WRAPPER_SetField(ValueType,Result,FieldType) \ 1240 JNI_ENTRY_CHECKED(void, \ 1241 checked_jni_Set##Result##Field(JNIEnv *env, \ 1242 jobject obj, \ 1243 jfieldID fieldID, \ 1244 ValueType val)) \ 1245 functionEnter(thr); \ 1246 IN_VM( \ 1247 checkInstanceFieldID(thr, fieldID, obj, FieldType, true); \ 1248 ) \ 1249 UNCHECKED()->Set##Result##Field(env,obj,fieldID,val); \ 1250 functionExit(thr); \ 1251 JNI_END 1252 1253 WRAPPER_SetField(jobject, Object, T_OBJECT) 1254 WRAPPER_SetField(jboolean, Boolean, T_BOOLEAN) 1255 WRAPPER_SetField(jbyte, Byte, T_BYTE) 1256 WRAPPER_SetField(jshort, Short, T_SHORT) 1257 WRAPPER_SetField(jchar, Char, T_CHAR) 1258 WRAPPER_SetField(jint, Int, T_INT) 1259 WRAPPER_SetField(jlong, Long, T_LONG) 1260 WRAPPER_SetField(jfloat, Float, T_FLOAT) 1261 WRAPPER_SetField(jdouble, Double, T_DOUBLE) 1262 1263 1264 JNI_ENTRY_CHECKED(jmethodID, 1265 checked_jni_GetStaticMethodID(JNIEnv *env, 1266 jclass clazz, 1267 const char *name, 1268 const char *sig)) 1269 functionEnter(thr); 1270 IN_VM( 1271 jniCheck::validate_class(thr, clazz, false); 1272 ) 1273 jmethodID result = UNCHECKED()->GetStaticMethodID(env,clazz,name,sig); 1274 functionExit(thr); 1275 return result; 1276 JNI_END 1277 1278 #define WRAPPER_CallStaticMethod(ReturnType,Result) \ 1279 JNI_ENTRY_CHECKED(ReturnType, \ 1280 checked_jni_CallStatic##Result##Method(JNIEnv *env, \ 1281 jclass clazz, \ 1282 jmethodID methodID, \ 1283 ...)) \ 1284 functionEnter(thr); \ 1285 va_list args; \ 1286 IN_VM( \ 1287 jniCheck::validate_call(thr, clazz, methodID); \ 1288 ) \ 1289 va_start(args,methodID); \ 1290 ReturnType result = UNCHECKED()->CallStatic##Result##MethodV(env, \ 1291 clazz, \ 1292 methodID, \ 1293 args); \ 1294 va_end(args); \ 1295 thr->set_pending_jni_exception_check("CallStatic"#Result"Method"); \ 1296 functionExit(thr); \ 1297 return result; \ 1298 JNI_END \ 1299 \ 1300 JNI_ENTRY_CHECKED(ReturnType, \ 1301 checked_jni_CallStatic##Result##MethodV(JNIEnv *env, \ 1302 jclass clazz, \ 1303 jmethodID methodID,\ 1304 va_list args)) \ 1305 functionEnter(thr); \ 1306 IN_VM( \ 1307 jniCheck::validate_call(thr, clazz, methodID); \ 1308 ) \ 1309 ReturnType result = UNCHECKED()->CallStatic##Result##MethodV(env, \ 1310 clazz, \ 1311 methodID, \ 1312 args); \ 1313 thr->set_pending_jni_exception_check("CallStatic"#Result"MethodV"); \ 1314 functionExit(thr); \ 1315 return result; \ 1316 JNI_END \ 1317 \ 1318 JNI_ENTRY_CHECKED(ReturnType, \ 1319 checked_jni_CallStatic##Result##MethodA(JNIEnv *env, \ 1320 jclass clazz, \ 1321 jmethodID methodID, \ 1322 const jvalue *args)) \ 1323 functionEnter(thr); \ 1324 IN_VM( \ 1325 jniCheck::validate_call(thr, clazz, methodID); \ 1326 ) \ 1327 ReturnType result = UNCHECKED()->CallStatic##Result##MethodA(env, \ 1328 clazz, \ 1329 methodID, \ 1330 args); \ 1331 thr->set_pending_jni_exception_check("CallStatic"#Result"MethodA"); \ 1332 functionExit(thr); \ 1333 return result; \ 1334 JNI_END 1335 1336 WRAPPER_CallStaticMethod(jobject,Object) 1337 WRAPPER_CallStaticMethod(jboolean,Boolean) 1338 WRAPPER_CallStaticMethod(jbyte,Byte) 1339 WRAPPER_CallStaticMethod(jshort,Short) 1340 WRAPPER_CallStaticMethod(jchar,Char) 1341 WRAPPER_CallStaticMethod(jint,Int) 1342 WRAPPER_CallStaticMethod(jlong,Long) 1343 WRAPPER_CallStaticMethod(jfloat,Float) 1344 WRAPPER_CallStaticMethod(jdouble,Double) 1345 1346 JNI_ENTRY_CHECKED(void, 1347 checked_jni_CallStaticVoidMethod(JNIEnv *env, 1348 jclass cls, 1349 jmethodID methodID, 1350 ...)) 1351 functionEnter(thr); 1352 va_list args; 1353 IN_VM( 1354 jniCheck::validate_call(thr, cls, methodID); 1355 ) 1356 va_start(args,methodID); 1357 UNCHECKED()->CallStaticVoidMethodV(env,cls,methodID,args); 1358 va_end(args); 1359 thr->set_pending_jni_exception_check("CallStaticVoidMethod"); 1360 functionExit(thr); 1361 JNI_END 1362 1363 JNI_ENTRY_CHECKED(void, 1364 checked_jni_CallStaticVoidMethodV(JNIEnv *env, 1365 jclass cls, 1366 jmethodID methodID, 1367 va_list args)) 1368 functionEnter(thr); 1369 IN_VM( 1370 jniCheck::validate_call(thr, cls, methodID); 1371 ) 1372 UNCHECKED()->CallStaticVoidMethodV(env,cls,methodID,args); 1373 thr->set_pending_jni_exception_check("CallStaticVoidMethodV"); 1374 functionExit(thr); 1375 JNI_END 1376 1377 JNI_ENTRY_CHECKED(void, 1378 checked_jni_CallStaticVoidMethodA(JNIEnv *env, 1379 jclass cls, 1380 jmethodID methodID, 1381 const jvalue * args)) 1382 functionEnter(thr); 1383 IN_VM( 1384 jniCheck::validate_call(thr, cls, methodID); 1385 ) 1386 UNCHECKED()->CallStaticVoidMethodA(env,cls,methodID,args); 1387 thr->set_pending_jni_exception_check("CallStaticVoidMethodA"); 1388 functionExit(thr); 1389 JNI_END 1390 1391 JNI_ENTRY_CHECKED(jfieldID, 1392 checked_jni_GetStaticFieldID(JNIEnv *env, 1393 jclass clazz, 1394 const char *name, 1395 const char *sig)) 1396 functionEnter(thr); 1397 IN_VM( 1398 jniCheck::validate_class(thr, clazz, false); 1399 ) 1400 jfieldID result = UNCHECKED()->GetStaticFieldID(env,clazz,name,sig); 1401 functionExit(thr); 1402 return result; 1403 JNI_END 1404 1405 #define WRAPPER_GetStaticField(ReturnType,Result,FieldType) \ 1406 JNI_ENTRY_CHECKED(ReturnType, \ 1407 checked_jni_GetStatic##Result##Field(JNIEnv *env, \ 1408 jclass clazz, \ 1409 jfieldID fieldID)) \ 1410 functionEnter(thr); \ 1411 IN_VM( \ 1412 jniCheck::validate_class(thr, clazz, false); \ 1413 checkStaticFieldID(thr, fieldID, clazz, FieldType, false); \ 1414 ) \ 1415 ReturnType result = UNCHECKED()->GetStatic##Result##Field(env, \ 1416 clazz, \ 1417 fieldID); \ 1418 functionExit(thr); \ 1419 return result; \ 1420 JNI_END 1421 1422 WRAPPER_GetStaticField(jobject, Object, T_OBJECT) 1423 WRAPPER_GetStaticField(jboolean, Boolean, T_BOOLEAN) 1424 WRAPPER_GetStaticField(jbyte, Byte, T_BYTE) 1425 WRAPPER_GetStaticField(jshort, Short, T_SHORT) 1426 WRAPPER_GetStaticField(jchar, Char, T_CHAR) 1427 WRAPPER_GetStaticField(jint, Int, T_INT) 1428 WRAPPER_GetStaticField(jlong, Long, T_LONG) 1429 WRAPPER_GetStaticField(jfloat, Float, T_FLOAT) 1430 WRAPPER_GetStaticField(jdouble, Double, T_DOUBLE) 1431 1432 #define WRAPPER_SetStaticField(ValueType,Result,FieldType) \ 1433 JNI_ENTRY_CHECKED(void, \ 1434 checked_jni_SetStatic##Result##Field(JNIEnv *env, \ 1435 jclass clazz, \ 1436 jfieldID fieldID, \ 1437 ValueType value)) \ 1438 functionEnter(thr); \ 1439 IN_VM( \ 1440 jniCheck::validate_class(thr, clazz, false); \ 1441 checkStaticFieldID(thr, fieldID, clazz, FieldType, true); \ 1442 ) \ 1443 UNCHECKED()->SetStatic##Result##Field(env,clazz,fieldID,value); \ 1444 functionExit(thr); \ 1445 JNI_END 1446 1447 WRAPPER_SetStaticField(jobject, Object, T_OBJECT) 1448 WRAPPER_SetStaticField(jboolean, Boolean, T_BOOLEAN) 1449 WRAPPER_SetStaticField(jbyte, Byte, T_BYTE) 1450 WRAPPER_SetStaticField(jshort, Short, T_SHORT) 1451 WRAPPER_SetStaticField(jchar, Char, T_CHAR) 1452 WRAPPER_SetStaticField(jint, Int, T_INT) 1453 WRAPPER_SetStaticField(jlong, Long, T_LONG) 1454 WRAPPER_SetStaticField(jfloat, Float, T_FLOAT) 1455 WRAPPER_SetStaticField(jdouble, Double, T_DOUBLE) 1456 1457 1458 JNI_ENTRY_CHECKED(jstring, 1459 checked_jni_NewString(JNIEnv *env, 1460 const jchar *unicode, 1461 jsize len)) 1462 functionEnter(thr); 1463 jstring result = UNCHECKED()->NewString(env,unicode,len); 1464 functionExit(thr); 1465 return result; 1466 JNI_END 1467 1468 JNI_ENTRY_CHECKED(jsize, 1469 checked_jni_GetStringLength(JNIEnv *env, 1470 jstring str)) 1471 functionEnter(thr); 1472 IN_VM( 1473 checkString(thr, str); 1474 ) 1475 jsize result = UNCHECKED()->GetStringLength(env,str); 1476 functionExit(thr); 1477 return result; 1478 JNI_END 1479 1480 JNI_ENTRY_CHECKED(const jchar *, 1481 checked_jni_GetStringChars(JNIEnv *env, 1482 jstring str, 1483 jboolean *isCopy)) 1484 functionEnter(thr); 1485 IN_VM( 1486 checkString(thr, str); 1487 ) 1488 jchar* new_result = nullptr; 1489 const jchar *result = UNCHECKED()->GetStringChars(env,str,isCopy); 1490 assert (isCopy == nullptr || *isCopy == JNI_TRUE, "GetStringChars didn't return a copy as expected"); 1491 if (result != nullptr) { 1492 size_t len = UNCHECKED()->GetStringLength(env,str) + 1; // + 1 for null termination 1493 len *= sizeof(jchar); 1494 new_result = (jchar*) GuardedMemory::wrap_copy(result, len, STRING_TAG); 1495 if (new_result == nullptr) { 1496 vm_exit_out_of_memory(len, OOM_MALLOC_ERROR, "checked_jni_GetStringChars"); 1497 } 1498 // Avoiding call to UNCHECKED()->ReleaseStringChars() since that will fire unexpected dtrace probes 1499 // Note that the dtrace arguments for the allocated memory will not match up with this solution. 1500 FreeHeap((char*)result); 1501 } 1502 functionExit(thr); 1503 return new_result; 1504 JNI_END 1505 1506 JNI_ENTRY_CHECKED(void, 1507 checked_jni_ReleaseStringChars(JNIEnv *env, 1508 jstring str, 1509 const jchar *chars)) 1510 functionEnterExceptionAllowed(thr); 1511 IN_VM( 1512 checkString(thr, str); 1513 ) 1514 if (chars == nullptr) { 1515 // still do the unchecked call to allow dtrace probes 1516 UNCHECKED()->ReleaseStringChars(env,str,chars); 1517 } 1518 else { 1519 GuardedMemory guarded((void*)chars); 1520 if (!guarded.verify_guards()) { 1521 tty->print_cr("ReleaseStringChars: release chars failed bounds check. " 1522 "string: " PTR_FORMAT " chars: " PTR_FORMAT, p2i(str), p2i(chars)); 1523 guarded.print_on(tty); 1524 NativeReportJNIFatalError(thr, "ReleaseStringChars: " 1525 "release chars failed bounds check."); 1526 } 1527 if (guarded.get_tag() != STRING_TAG) { 1528 tty->print_cr("ReleaseStringChars: called on something not allocated " 1529 "by GetStringChars. string: " PTR_FORMAT " chars: " PTR_FORMAT, 1530 p2i(str), p2i(chars)); 1531 NativeReportJNIFatalError(thr, "ReleaseStringChars called on something " 1532 "not allocated by GetStringChars"); 1533 } 1534 UNCHECKED()->ReleaseStringChars(env, str, 1535 (const jchar*) guarded.release_for_freeing()); 1536 } 1537 functionExit(thr); 1538 JNI_END 1539 1540 JNI_ENTRY_CHECKED(jstring, 1541 checked_jni_NewStringUTF(JNIEnv *env, 1542 const char *utf)) 1543 functionEnter(thr); 1544 jstring result = UNCHECKED()->NewStringUTF(env,utf); 1545 functionExit(thr); 1546 return result; 1547 JNI_END 1548 1549 JNI_ENTRY_CHECKED(jsize, 1550 checked_jni_GetStringUTFLength(JNIEnv *env, 1551 jstring str)) 1552 functionEnter(thr); 1553 IN_VM( 1554 checkString(thr, str); 1555 ) 1556 jsize result = UNCHECKED()->GetStringUTFLength(env,str); 1557 jlong full_length = UNCHECKED()->GetStringUTFLengthAsLong(env,str); 1558 if (full_length > result) { 1559 ResourceMark rm(thr); 1560 stringStream ss; 1561 ss.print("WARNING: large String with modified UTF-8 length " JLONG_FORMAT 1562 " is reporting a reduced length of %d - use GetStringUTFLengthAsLong instead", 1563 full_length, result); 1564 NativeReportJNIWarning(thr, ss.as_string()); 1565 } 1566 functionExit(thr); 1567 return result; 1568 JNI_END 1569 1570 JNI_ENTRY_CHECKED(jlong, 1571 checked_jni_GetStringUTFLengthAsLong(JNIEnv *env, 1572 jstring str)) 1573 functionEnter(thr); 1574 IN_VM( 1575 checkString(thr, str); 1576 ) 1577 jlong result = UNCHECKED()->GetStringUTFLengthAsLong(env,str); 1578 functionExit(thr); 1579 return result; 1580 JNI_END 1581 1582 JNI_ENTRY_CHECKED(const char *, 1583 checked_jni_GetStringUTFChars(JNIEnv *env, 1584 jstring str, 1585 jboolean *isCopy)) 1586 functionEnter(thr); 1587 IN_VM( 1588 checkString(thr, str); 1589 ) 1590 char* new_result = nullptr; 1591 const char *result = UNCHECKED()->GetStringUTFChars(env,str,isCopy); 1592 assert (isCopy == nullptr || *isCopy == JNI_TRUE, "GetStringUTFChars didn't return a copy as expected"); 1593 if (result != nullptr) { 1594 size_t len = strlen(result) + 1; // + 1 for null termination 1595 new_result = (char*) GuardedMemory::wrap_copy(result, len, STRING_UTF_TAG); 1596 if (new_result == nullptr) { 1597 vm_exit_out_of_memory(len, OOM_MALLOC_ERROR, "checked_jni_GetStringUTFChars"); 1598 } 1599 // Avoiding call to UNCHECKED()->ReleaseStringUTFChars() since that will fire unexpected dtrace probes 1600 // Note that the dtrace arguments for the allocated memory will not match up with this solution. 1601 FreeHeap((char*)result); 1602 } 1603 functionExit(thr); 1604 return new_result; 1605 JNI_END 1606 1607 JNI_ENTRY_CHECKED(void, 1608 checked_jni_ReleaseStringUTFChars(JNIEnv *env, 1609 jstring str, 1610 const char* chars)) 1611 functionEnterExceptionAllowed(thr); 1612 IN_VM( 1613 checkString(thr, str); 1614 ) 1615 if (chars == nullptr) { 1616 // still do the unchecked call to allow dtrace probes 1617 UNCHECKED()->ReleaseStringUTFChars(env,str,chars); 1618 } 1619 else { 1620 GuardedMemory guarded((void*)chars); 1621 if (!guarded.verify_guards()) { 1622 tty->print_cr("ReleaseStringUTFChars: release chars failed bounds check. " 1623 "string: " PTR_FORMAT " chars: " PTR_FORMAT, p2i(str), p2i(chars)); 1624 guarded.print_on(tty); 1625 NativeReportJNIFatalError(thr, "ReleaseStringUTFChars: " 1626 "release chars failed bounds check."); 1627 } 1628 if (guarded.get_tag() != STRING_UTF_TAG) { 1629 tty->print_cr("ReleaseStringUTFChars: called on something not " 1630 "allocated by GetStringUTFChars. string: " PTR_FORMAT " chars: " 1631 PTR_FORMAT, p2i(str), p2i(chars)); 1632 NativeReportJNIFatalError(thr, "ReleaseStringUTFChars " 1633 "called on something not allocated by GetStringUTFChars"); 1634 } 1635 UNCHECKED()->ReleaseStringUTFChars(env, str, 1636 (const char*) guarded.release_for_freeing()); 1637 } 1638 functionExit(thr); 1639 JNI_END 1640 1641 JNI_ENTRY_CHECKED(jsize, 1642 checked_jni_GetArrayLength(JNIEnv *env, 1643 jarray array)) 1644 functionEnter(thr); 1645 IN_VM( 1646 check_is_array(thr, array); 1647 ) 1648 jsize result = UNCHECKED()->GetArrayLength(env,array); 1649 functionExit(thr); 1650 return result; 1651 JNI_END 1652 1653 JNI_ENTRY_CHECKED(jobjectArray, 1654 checked_jni_NewObjectArray(JNIEnv *env, 1655 jsize len, 1656 jclass clazz, 1657 jobject init)) 1658 functionEnter(thr); 1659 jobjectArray result = UNCHECKED()->NewObjectArray(env,len,clazz,init); 1660 functionExit(thr); 1661 return result; 1662 JNI_END 1663 1664 JNI_ENTRY_CHECKED(jobject, 1665 checked_jni_GetObjectArrayElement(JNIEnv *env, 1666 jobjectArray array, 1667 jsize index)) 1668 functionEnter(thr); 1669 IN_VM( 1670 check_is_obj_array(thr, array); 1671 ) 1672 jobject result = UNCHECKED()->GetObjectArrayElement(env,array,index); 1673 functionExit(thr); 1674 return result; 1675 JNI_END 1676 1677 JNI_ENTRY_CHECKED(void, 1678 checked_jni_SetObjectArrayElement(JNIEnv *env, 1679 jobjectArray array, 1680 jsize index, 1681 jobject val)) 1682 functionEnter(thr); 1683 IN_VM( 1684 check_is_obj_array(thr, array); 1685 ) 1686 UNCHECKED()->SetObjectArrayElement(env,array,index,val); 1687 functionExit(thr); 1688 JNI_END 1689 1690 #define WRAPPER_NewScalarArray(Return, Result) \ 1691 JNI_ENTRY_CHECKED(Return, \ 1692 checked_jni_New##Result##Array(JNIEnv *env, \ 1693 jsize len)) \ 1694 functionEnter(thr); \ 1695 Return result = UNCHECKED()->New##Result##Array(env,len); \ 1696 functionExit(thr); \ 1697 return (Return) result; \ 1698 JNI_END 1699 1700 WRAPPER_NewScalarArray(jbooleanArray, Boolean) 1701 WRAPPER_NewScalarArray(jbyteArray, Byte) 1702 WRAPPER_NewScalarArray(jshortArray, Short) 1703 WRAPPER_NewScalarArray(jcharArray, Char) 1704 WRAPPER_NewScalarArray(jintArray, Int) 1705 WRAPPER_NewScalarArray(jlongArray, Long) 1706 WRAPPER_NewScalarArray(jfloatArray, Float) 1707 WRAPPER_NewScalarArray(jdoubleArray, Double) 1708 1709 #define WRAPPER_GetScalarArrayElements(ElementTag,ElementType,Result) \ 1710 JNI_ENTRY_CHECKED(ElementType *, \ 1711 checked_jni_Get##Result##ArrayElements(JNIEnv *env, \ 1712 ElementType##Array array, \ 1713 jboolean *isCopy)) \ 1714 functionEnter(thr); \ 1715 IN_VM( \ 1716 check_primitive_array_type(thr, array, ElementTag); \ 1717 ) \ 1718 ElementType *result = UNCHECKED()->Get##Result##ArrayElements(env, \ 1719 array, \ 1720 isCopy); \ 1721 if (result != nullptr) { \ 1722 result = (ElementType *) check_jni_wrap_copy_array(thr, array, result); \ 1723 } \ 1724 functionExit(thr); \ 1725 return result; \ 1726 JNI_END 1727 1728 WRAPPER_GetScalarArrayElements(T_BOOLEAN, jboolean, Boolean) 1729 WRAPPER_GetScalarArrayElements(T_BYTE, jbyte, Byte) 1730 WRAPPER_GetScalarArrayElements(T_SHORT, jshort, Short) 1731 WRAPPER_GetScalarArrayElements(T_CHAR, jchar, Char) 1732 WRAPPER_GetScalarArrayElements(T_INT, jint, Int) 1733 WRAPPER_GetScalarArrayElements(T_LONG, jlong, Long) 1734 WRAPPER_GetScalarArrayElements(T_FLOAT, jfloat, Float) 1735 WRAPPER_GetScalarArrayElements(T_DOUBLE, jdouble, Double) 1736 1737 #define WRAPPER_ReleaseScalarArrayElements(ElementTag,ElementType,Result,Tag) \ 1738 JNI_ENTRY_CHECKED(void, \ 1739 checked_jni_Release##Result##ArrayElements(JNIEnv *env, \ 1740 ElementType##Array array, \ 1741 ElementType *elems, \ 1742 jint mode)) \ 1743 functionEnterExceptionAllowed(thr); \ 1744 IN_VM( \ 1745 check_primitive_array_type(thr, array, ElementTag); \ 1746 ASSERT_OOPS_ALLOWED; \ 1747 typeArrayOop a = typeArrayOop(JNIHandles::resolve_non_null(array)); \ 1748 ) \ 1749 ElementType* orig_result = (ElementType *) check_wrapped_array_release( \ 1750 thr, "checked_jni_Release"#Result"ArrayElements", array, elems, mode, JNI_FALSE); \ 1751 UNCHECKED()->Release##Result##ArrayElements(env, array, orig_result, mode); \ 1752 functionExit(thr); \ 1753 JNI_END 1754 1755 WRAPPER_ReleaseScalarArrayElements(T_BOOLEAN,jboolean, Boolean, bool) 1756 WRAPPER_ReleaseScalarArrayElements(T_BYTE, jbyte, Byte, byte) 1757 WRAPPER_ReleaseScalarArrayElements(T_SHORT, jshort, Short, short) 1758 WRAPPER_ReleaseScalarArrayElements(T_CHAR, jchar, Char, char) 1759 WRAPPER_ReleaseScalarArrayElements(T_INT, jint, Int, int) 1760 WRAPPER_ReleaseScalarArrayElements(T_LONG, jlong, Long, long) 1761 WRAPPER_ReleaseScalarArrayElements(T_FLOAT, jfloat, Float, float) 1762 WRAPPER_ReleaseScalarArrayElements(T_DOUBLE, jdouble, Double, double) 1763 1764 #define WRAPPER_GetScalarArrayRegion(ElementTag,ElementType,Result) \ 1765 JNI_ENTRY_CHECKED(void, \ 1766 checked_jni_Get##Result##ArrayRegion(JNIEnv *env, \ 1767 ElementType##Array array, \ 1768 jsize start, \ 1769 jsize len, \ 1770 ElementType *buf)) \ 1771 functionEnter(thr); \ 1772 IN_VM( \ 1773 check_primitive_array_type(thr, array, ElementTag); \ 1774 ) \ 1775 UNCHECKED()->Get##Result##ArrayRegion(env,array,start,len,buf); \ 1776 functionExit(thr); \ 1777 JNI_END 1778 1779 WRAPPER_GetScalarArrayRegion(T_BOOLEAN, jboolean, Boolean) 1780 WRAPPER_GetScalarArrayRegion(T_BYTE, jbyte, Byte) 1781 WRAPPER_GetScalarArrayRegion(T_SHORT, jshort, Short) 1782 WRAPPER_GetScalarArrayRegion(T_CHAR, jchar, Char) 1783 WRAPPER_GetScalarArrayRegion(T_INT, jint, Int) 1784 WRAPPER_GetScalarArrayRegion(T_LONG, jlong, Long) 1785 WRAPPER_GetScalarArrayRegion(T_FLOAT, jfloat, Float) 1786 WRAPPER_GetScalarArrayRegion(T_DOUBLE, jdouble, Double) 1787 1788 #define WRAPPER_SetScalarArrayRegion(ElementTag,ElementType,Result) \ 1789 JNI_ENTRY_CHECKED(void, \ 1790 checked_jni_Set##Result##ArrayRegion(JNIEnv *env, \ 1791 ElementType##Array array, \ 1792 jsize start, \ 1793 jsize len, \ 1794 const ElementType *buf)) \ 1795 functionEnter(thr); \ 1796 IN_VM( \ 1797 check_primitive_array_type(thr, array, ElementTag); \ 1798 ) \ 1799 UNCHECKED()->Set##Result##ArrayRegion(env,array,start,len,buf); \ 1800 functionExit(thr); \ 1801 JNI_END 1802 1803 WRAPPER_SetScalarArrayRegion(T_BOOLEAN, jboolean, Boolean) 1804 WRAPPER_SetScalarArrayRegion(T_BYTE, jbyte, Byte) 1805 WRAPPER_SetScalarArrayRegion(T_SHORT, jshort, Short) 1806 WRAPPER_SetScalarArrayRegion(T_CHAR, jchar, Char) 1807 WRAPPER_SetScalarArrayRegion(T_INT, jint, Int) 1808 WRAPPER_SetScalarArrayRegion(T_LONG, jlong, Long) 1809 WRAPPER_SetScalarArrayRegion(T_FLOAT, jfloat, Float) 1810 WRAPPER_SetScalarArrayRegion(T_DOUBLE, jdouble, Double) 1811 1812 JNI_ENTRY_CHECKED(jint, 1813 checked_jni_RegisterNatives(JNIEnv *env, 1814 jclass clazz, 1815 const JNINativeMethod *methods, 1816 jint nMethods)) 1817 functionEnter(thr); 1818 jint result = UNCHECKED()->RegisterNatives(env,clazz,methods,nMethods); 1819 functionExit(thr); 1820 return result; 1821 JNI_END 1822 1823 JNI_ENTRY_CHECKED(jint, 1824 checked_jni_UnregisterNatives(JNIEnv *env, 1825 jclass clazz)) 1826 functionEnter(thr); 1827 jint result = UNCHECKED()->UnregisterNatives(env,clazz); 1828 functionExit(thr); 1829 return result; 1830 JNI_END 1831 1832 JNI_ENTRY_CHECKED(jint, 1833 checked_jni_MonitorEnter(JNIEnv *env, 1834 jobject obj)) 1835 functionEnter(thr); 1836 IN_VM( 1837 jniCheck::validate_object(thr, obj); 1838 ) 1839 jint result = UNCHECKED()->MonitorEnter(env,obj); 1840 functionExit(thr); 1841 return result; 1842 JNI_END 1843 1844 JNI_ENTRY_CHECKED(jint, 1845 checked_jni_MonitorExit(JNIEnv *env, 1846 jobject obj)) 1847 functionEnterExceptionAllowed(thr); 1848 IN_VM( 1849 jniCheck::validate_object(thr, obj); 1850 ) 1851 jint result = UNCHECKED()->MonitorExit(env,obj); 1852 functionExit(thr); 1853 return result; 1854 JNI_END 1855 1856 JNI_ENTRY_CHECKED(jint, 1857 checked_jni_GetJavaVM(JNIEnv *env, 1858 JavaVM **vm)) 1859 functionEnter(thr); 1860 jint result = UNCHECKED()->GetJavaVM(env,vm); 1861 functionExit(thr); 1862 return result; 1863 JNI_END 1864 1865 JNI_ENTRY_CHECKED(void, 1866 checked_jni_GetStringRegion(JNIEnv *env, 1867 jstring str, 1868 jsize start, 1869 jsize len, 1870 jchar *buf)) 1871 functionEnter(thr); 1872 IN_VM( 1873 checkString(thr, str); 1874 ) 1875 UNCHECKED()->GetStringRegion(env, str, start, len, buf); 1876 functionExit(thr); 1877 JNI_END 1878 1879 JNI_ENTRY_CHECKED(void, 1880 checked_jni_GetStringUTFRegion(JNIEnv *env, 1881 jstring str, 1882 jsize start, 1883 jsize len, 1884 char *buf)) 1885 functionEnter(thr); 1886 IN_VM( 1887 checkString(thr, str); 1888 ) 1889 UNCHECKED()->GetStringUTFRegion(env, str, start, len, buf); 1890 functionExit(thr); 1891 JNI_END 1892 1893 JNI_ENTRY_CHECKED(void *, 1894 checked_jni_GetPrimitiveArrayCritical(JNIEnv *env, 1895 jarray array, 1896 jboolean *isCopy)) 1897 functionEnterCritical(thr); 1898 IN_VM( 1899 check_is_primitive_array(thr, array); 1900 ) 1901 void *result = UNCHECKED()->GetPrimitiveArrayCritical(env, array, isCopy); 1902 if (result != nullptr) { 1903 result = check_jni_wrap_copy_array(thr, array, result, JNI_TRUE); 1904 } 1905 functionExit(thr); 1906 return result; 1907 JNI_END 1908 1909 JNI_ENTRY_CHECKED(void, 1910 checked_jni_ReleasePrimitiveArrayCritical(JNIEnv *env, 1911 jarray array, 1912 void *carray, 1913 jint mode)) 1914 functionEnterCriticalExceptionAllowed(thr); 1915 IN_VM( 1916 check_is_primitive_array(thr, array); 1917 ) 1918 // Check the element array... 1919 void* orig_result = check_wrapped_array_release(thr, "ReleasePrimitiveArrayCritical", 1920 array, carray, mode, JNI_TRUE); 1921 UNCHECKED()->ReleasePrimitiveArrayCritical(env, array, orig_result, mode); 1922 functionExit(thr); 1923 JNI_END 1924 1925 JNI_ENTRY_CHECKED(const jchar*, 1926 checked_jni_GetStringCritical(JNIEnv *env, 1927 jstring string, 1928 jboolean *isCopy)) 1929 functionEnterCritical(thr); 1930 IN_VM( 1931 checkString(thr, string); 1932 ) 1933 const jchar *result = UNCHECKED()->GetStringCritical(env, string, isCopy); 1934 functionExit(thr); 1935 return result; 1936 JNI_END 1937 1938 JNI_ENTRY_CHECKED(void, 1939 checked_jni_ReleaseStringCritical(JNIEnv *env, 1940 jstring str, 1941 const jchar *chars)) 1942 functionEnterCriticalExceptionAllowed(thr); 1943 IN_VM( 1944 checkString(thr, str); 1945 ) 1946 /* The Hotspot JNI code does not use the parameters, so just check the 1947 * string parameter as a minor sanity check 1948 */ 1949 UNCHECKED()->ReleaseStringCritical(env, str, chars); 1950 functionExit(thr); 1951 JNI_END 1952 1953 JNI_ENTRY_CHECKED(jweak, 1954 checked_jni_NewWeakGlobalRef(JNIEnv *env, 1955 jobject obj)) 1956 functionEnter(thr); 1957 IN_VM( 1958 if (obj != nullptr) { 1959 jniCheck::validate_handle(thr, obj); 1960 } 1961 ) 1962 jweak result = UNCHECKED()->NewWeakGlobalRef(env, obj); 1963 functionExit(thr); 1964 return result; 1965 JNI_END 1966 1967 JNI_ENTRY_CHECKED(void, 1968 checked_jni_DeleteWeakGlobalRef(JNIEnv *env, 1969 jweak ref)) 1970 functionEnterExceptionAllowed(thr); 1971 IN_VM( 1972 if (ref && !JNIHandles::is_weak_global_handle(ref)) { 1973 ReportJNIFatalError(thr, 1974 "Invalid weak global JNI handle passed to DeleteWeakGlobalRef"); 1975 } 1976 ) 1977 UNCHECKED()->DeleteWeakGlobalRef(env, ref); 1978 functionExit(thr); 1979 JNI_END 1980 1981 JNI_ENTRY_CHECKED(jboolean, 1982 checked_jni_ExceptionCheck(JNIEnv *env)) 1983 thr->clear_pending_jni_exception_check(); 1984 functionEnterExceptionAllowed(thr); 1985 jboolean result = UNCHECKED()->ExceptionCheck(env); 1986 functionExit(thr); 1987 return result; 1988 JNI_END 1989 1990 JNI_ENTRY_CHECKED(jobject, 1991 checked_jni_NewDirectByteBuffer(JNIEnv *env, 1992 void *address, 1993 jlong capacity)) 1994 functionEnter(thr); 1995 jobject result = UNCHECKED()->NewDirectByteBuffer(env, address, capacity); 1996 functionExit(thr); 1997 return result; 1998 JNI_END 1999 2000 JNI_ENTRY_CHECKED(void *, 2001 checked_jni_GetDirectBufferAddress(JNIEnv *env, 2002 jobject buf)) 2003 functionEnter(thr); 2004 void* result = UNCHECKED()->GetDirectBufferAddress(env, buf); 2005 functionExit(thr); 2006 return result; 2007 JNI_END 2008 2009 JNI_ENTRY_CHECKED(jlong, 2010 checked_jni_GetDirectBufferCapacity(JNIEnv *env, 2011 jobject buf)) 2012 functionEnter(thr); 2013 jlong result = UNCHECKED()->GetDirectBufferCapacity(env, buf); 2014 functionExit(thr); 2015 return result; 2016 JNI_END 2017 2018 JNI_ENTRY_CHECKED(jobjectRefType, 2019 checked_jni_GetObjectRefType(JNIEnv *env, 2020 jobject obj)) 2021 functionEnter(thr); 2022 /* validate the object being passed */ 2023 IN_VM( 2024 jniCheck::validate_object(thr, obj); 2025 ) 2026 jobjectRefType result = UNCHECKED()->GetObjectRefType(env, obj); 2027 functionExit(thr); 2028 return result; 2029 JNI_END 2030 2031 2032 JNI_ENTRY_CHECKED(jint, 2033 checked_jni_GetVersion(JNIEnv *env)) 2034 functionEnter(thr); 2035 jint result = UNCHECKED()->GetVersion(env); 2036 functionExit(thr); 2037 return result; 2038 JNI_END 2039 2040 JNI_ENTRY_CHECKED(jobject, 2041 checked_jni_GetModule(JNIEnv *env, 2042 jclass clazz)) 2043 functionEnter(thr); 2044 jobject result = UNCHECKED()->GetModule(env, clazz); 2045 functionExit(thr); 2046 return result; 2047 JNI_END 2048 2049 JNI_ENTRY_CHECKED(jboolean, 2050 checked_jni_IsVirtualThread(JNIEnv *env, 2051 jobject obj)) 2052 functionEnter(thr); 2053 jboolean result = UNCHECKED()->IsVirtualThread(env, obj); 2054 functionExit(thr); 2055 return result; 2056 JNI_END 2057 2058 JNI_ENTRY_CHECKED(jboolean, 2059 checked_jni_IsValueObject(JNIEnv *env, 2060 jobject obj)) 2061 functionEnter(thr); 2062 jboolean result = UNCHECKED()->IsValueObject(env, obj); 2063 functionExit(thr); 2064 return result; 2065 JNI_END 2066 2067 /* 2068 * Structure containing all checked jni functions 2069 */ 2070 struct JNINativeInterface_ checked_jni_NativeInterface = { 2071 nullptr, 2072 nullptr, 2073 nullptr, 2074 2075 nullptr, 2076 2077 checked_jni_GetVersion, 2078 2079 checked_jni_DefineClass, 2080 checked_jni_FindClass, 2081 2082 checked_jni_FromReflectedMethod, 2083 checked_jni_FromReflectedField, 2084 2085 checked_jni_ToReflectedMethod, 2086 2087 checked_jni_GetSuperclass, 2088 checked_jni_IsAssignableFrom, 2089 2090 checked_jni_ToReflectedField, 2091 2092 checked_jni_Throw, 2093 checked_jni_ThrowNew, 2094 checked_jni_ExceptionOccurred, 2095 checked_jni_ExceptionDescribe, 2096 checked_jni_ExceptionClear, 2097 checked_jni_FatalError, 2098 2099 checked_jni_PushLocalFrame, 2100 checked_jni_PopLocalFrame, 2101 2102 checked_jni_NewGlobalRef, 2103 checked_jni_DeleteGlobalRef, 2104 checked_jni_DeleteLocalRef, 2105 checked_jni_IsSameObject, 2106 2107 checked_jni_NewLocalRef, 2108 checked_jni_EnsureLocalCapacity, 2109 2110 checked_jni_AllocObject, 2111 checked_jni_NewObject, 2112 checked_jni_NewObjectV, 2113 checked_jni_NewObjectA, 2114 2115 checked_jni_GetObjectClass, 2116 checked_jni_IsInstanceOf, 2117 2118 checked_jni_GetMethodID, 2119 2120 checked_jni_CallObjectMethod, 2121 checked_jni_CallObjectMethodV, 2122 checked_jni_CallObjectMethodA, 2123 checked_jni_CallBooleanMethod, 2124 checked_jni_CallBooleanMethodV, 2125 checked_jni_CallBooleanMethodA, 2126 checked_jni_CallByteMethod, 2127 checked_jni_CallByteMethodV, 2128 checked_jni_CallByteMethodA, 2129 checked_jni_CallCharMethod, 2130 checked_jni_CallCharMethodV, 2131 checked_jni_CallCharMethodA, 2132 checked_jni_CallShortMethod, 2133 checked_jni_CallShortMethodV, 2134 checked_jni_CallShortMethodA, 2135 checked_jni_CallIntMethod, 2136 checked_jni_CallIntMethodV, 2137 checked_jni_CallIntMethodA, 2138 checked_jni_CallLongMethod, 2139 checked_jni_CallLongMethodV, 2140 checked_jni_CallLongMethodA, 2141 checked_jni_CallFloatMethod, 2142 checked_jni_CallFloatMethodV, 2143 checked_jni_CallFloatMethodA, 2144 checked_jni_CallDoubleMethod, 2145 checked_jni_CallDoubleMethodV, 2146 checked_jni_CallDoubleMethodA, 2147 checked_jni_CallVoidMethod, 2148 checked_jni_CallVoidMethodV, 2149 checked_jni_CallVoidMethodA, 2150 2151 checked_jni_CallNonvirtualObjectMethod, 2152 checked_jni_CallNonvirtualObjectMethodV, 2153 checked_jni_CallNonvirtualObjectMethodA, 2154 checked_jni_CallNonvirtualBooleanMethod, 2155 checked_jni_CallNonvirtualBooleanMethodV, 2156 checked_jni_CallNonvirtualBooleanMethodA, 2157 checked_jni_CallNonvirtualByteMethod, 2158 checked_jni_CallNonvirtualByteMethodV, 2159 checked_jni_CallNonvirtualByteMethodA, 2160 checked_jni_CallNonvirtualCharMethod, 2161 checked_jni_CallNonvirtualCharMethodV, 2162 checked_jni_CallNonvirtualCharMethodA, 2163 checked_jni_CallNonvirtualShortMethod, 2164 checked_jni_CallNonvirtualShortMethodV, 2165 checked_jni_CallNonvirtualShortMethodA, 2166 checked_jni_CallNonvirtualIntMethod, 2167 checked_jni_CallNonvirtualIntMethodV, 2168 checked_jni_CallNonvirtualIntMethodA, 2169 checked_jni_CallNonvirtualLongMethod, 2170 checked_jni_CallNonvirtualLongMethodV, 2171 checked_jni_CallNonvirtualLongMethodA, 2172 checked_jni_CallNonvirtualFloatMethod, 2173 checked_jni_CallNonvirtualFloatMethodV, 2174 checked_jni_CallNonvirtualFloatMethodA, 2175 checked_jni_CallNonvirtualDoubleMethod, 2176 checked_jni_CallNonvirtualDoubleMethodV, 2177 checked_jni_CallNonvirtualDoubleMethodA, 2178 checked_jni_CallNonvirtualVoidMethod, 2179 checked_jni_CallNonvirtualVoidMethodV, 2180 checked_jni_CallNonvirtualVoidMethodA, 2181 2182 checked_jni_GetFieldID, 2183 2184 checked_jni_GetObjectField, 2185 checked_jni_GetBooleanField, 2186 checked_jni_GetByteField, 2187 checked_jni_GetCharField, 2188 checked_jni_GetShortField, 2189 checked_jni_GetIntField, 2190 checked_jni_GetLongField, 2191 checked_jni_GetFloatField, 2192 checked_jni_GetDoubleField, 2193 2194 checked_jni_SetObjectField, 2195 checked_jni_SetBooleanField, 2196 checked_jni_SetByteField, 2197 checked_jni_SetCharField, 2198 checked_jni_SetShortField, 2199 checked_jni_SetIntField, 2200 checked_jni_SetLongField, 2201 checked_jni_SetFloatField, 2202 checked_jni_SetDoubleField, 2203 2204 checked_jni_GetStaticMethodID, 2205 2206 checked_jni_CallStaticObjectMethod, 2207 checked_jni_CallStaticObjectMethodV, 2208 checked_jni_CallStaticObjectMethodA, 2209 checked_jni_CallStaticBooleanMethod, 2210 checked_jni_CallStaticBooleanMethodV, 2211 checked_jni_CallStaticBooleanMethodA, 2212 checked_jni_CallStaticByteMethod, 2213 checked_jni_CallStaticByteMethodV, 2214 checked_jni_CallStaticByteMethodA, 2215 checked_jni_CallStaticCharMethod, 2216 checked_jni_CallStaticCharMethodV, 2217 checked_jni_CallStaticCharMethodA, 2218 checked_jni_CallStaticShortMethod, 2219 checked_jni_CallStaticShortMethodV, 2220 checked_jni_CallStaticShortMethodA, 2221 checked_jni_CallStaticIntMethod, 2222 checked_jni_CallStaticIntMethodV, 2223 checked_jni_CallStaticIntMethodA, 2224 checked_jni_CallStaticLongMethod, 2225 checked_jni_CallStaticLongMethodV, 2226 checked_jni_CallStaticLongMethodA, 2227 checked_jni_CallStaticFloatMethod, 2228 checked_jni_CallStaticFloatMethodV, 2229 checked_jni_CallStaticFloatMethodA, 2230 checked_jni_CallStaticDoubleMethod, 2231 checked_jni_CallStaticDoubleMethodV, 2232 checked_jni_CallStaticDoubleMethodA, 2233 checked_jni_CallStaticVoidMethod, 2234 checked_jni_CallStaticVoidMethodV, 2235 checked_jni_CallStaticVoidMethodA, 2236 2237 checked_jni_GetStaticFieldID, 2238 2239 checked_jni_GetStaticObjectField, 2240 checked_jni_GetStaticBooleanField, 2241 checked_jni_GetStaticByteField, 2242 checked_jni_GetStaticCharField, 2243 checked_jni_GetStaticShortField, 2244 checked_jni_GetStaticIntField, 2245 checked_jni_GetStaticLongField, 2246 checked_jni_GetStaticFloatField, 2247 checked_jni_GetStaticDoubleField, 2248 2249 checked_jni_SetStaticObjectField, 2250 checked_jni_SetStaticBooleanField, 2251 checked_jni_SetStaticByteField, 2252 checked_jni_SetStaticCharField, 2253 checked_jni_SetStaticShortField, 2254 checked_jni_SetStaticIntField, 2255 checked_jni_SetStaticLongField, 2256 checked_jni_SetStaticFloatField, 2257 checked_jni_SetStaticDoubleField, 2258 2259 checked_jni_NewString, 2260 checked_jni_GetStringLength, 2261 checked_jni_GetStringChars, 2262 checked_jni_ReleaseStringChars, 2263 2264 checked_jni_NewStringUTF, 2265 checked_jni_GetStringUTFLength, 2266 checked_jni_GetStringUTFChars, 2267 checked_jni_ReleaseStringUTFChars, 2268 2269 checked_jni_GetArrayLength, 2270 2271 checked_jni_NewObjectArray, 2272 checked_jni_GetObjectArrayElement, 2273 checked_jni_SetObjectArrayElement, 2274 2275 checked_jni_NewBooleanArray, 2276 checked_jni_NewByteArray, 2277 checked_jni_NewCharArray, 2278 checked_jni_NewShortArray, 2279 checked_jni_NewIntArray, 2280 checked_jni_NewLongArray, 2281 checked_jni_NewFloatArray, 2282 checked_jni_NewDoubleArray, 2283 2284 checked_jni_GetBooleanArrayElements, 2285 checked_jni_GetByteArrayElements, 2286 checked_jni_GetCharArrayElements, 2287 checked_jni_GetShortArrayElements, 2288 checked_jni_GetIntArrayElements, 2289 checked_jni_GetLongArrayElements, 2290 checked_jni_GetFloatArrayElements, 2291 checked_jni_GetDoubleArrayElements, 2292 2293 checked_jni_ReleaseBooleanArrayElements, 2294 checked_jni_ReleaseByteArrayElements, 2295 checked_jni_ReleaseCharArrayElements, 2296 checked_jni_ReleaseShortArrayElements, 2297 checked_jni_ReleaseIntArrayElements, 2298 checked_jni_ReleaseLongArrayElements, 2299 checked_jni_ReleaseFloatArrayElements, 2300 checked_jni_ReleaseDoubleArrayElements, 2301 2302 checked_jni_GetBooleanArrayRegion, 2303 checked_jni_GetByteArrayRegion, 2304 checked_jni_GetCharArrayRegion, 2305 checked_jni_GetShortArrayRegion, 2306 checked_jni_GetIntArrayRegion, 2307 checked_jni_GetLongArrayRegion, 2308 checked_jni_GetFloatArrayRegion, 2309 checked_jni_GetDoubleArrayRegion, 2310 2311 checked_jni_SetBooleanArrayRegion, 2312 checked_jni_SetByteArrayRegion, 2313 checked_jni_SetCharArrayRegion, 2314 checked_jni_SetShortArrayRegion, 2315 checked_jni_SetIntArrayRegion, 2316 checked_jni_SetLongArrayRegion, 2317 checked_jni_SetFloatArrayRegion, 2318 checked_jni_SetDoubleArrayRegion, 2319 2320 checked_jni_RegisterNatives, 2321 checked_jni_UnregisterNatives, 2322 2323 checked_jni_MonitorEnter, 2324 checked_jni_MonitorExit, 2325 2326 checked_jni_GetJavaVM, 2327 2328 checked_jni_GetStringRegion, 2329 checked_jni_GetStringUTFRegion, 2330 2331 checked_jni_GetPrimitiveArrayCritical, 2332 checked_jni_ReleasePrimitiveArrayCritical, 2333 2334 checked_jni_GetStringCritical, 2335 checked_jni_ReleaseStringCritical, 2336 2337 checked_jni_NewWeakGlobalRef, 2338 checked_jni_DeleteWeakGlobalRef, 2339 2340 checked_jni_ExceptionCheck, 2341 2342 checked_jni_NewDirectByteBuffer, 2343 checked_jni_GetDirectBufferAddress, 2344 checked_jni_GetDirectBufferCapacity, 2345 2346 // New 1.6 Features 2347 2348 checked_jni_GetObjectRefType, 2349 2350 // Module Features 2351 2352 checked_jni_GetModule, 2353 2354 // Virtual threads 2355 2356 checked_jni_IsVirtualThread, 2357 2358 // Large UTF8 support 2359 2360 checked_jni_GetStringUTFLengthAsLong, 2361 2362 // Value classes 2363 2364 checked_jni_IsValueObject 2365 2366 }; 2367 2368 2369 // Returns the function structure 2370 struct JNINativeInterface_* jni_functions_check() { 2371 2372 unchecked_jni_NativeInterface = jni_functions_nocheck(); 2373 2374 // make sure the last pointer in the checked table is not null, indicating 2375 // an addition to the JNINativeInterface_ structure without initializing 2376 // it in the checked table. 2377 DEBUG_ONLY(intptr_t *lastPtr = (intptr_t *)((char *)&checked_jni_NativeInterface + \ 2378 sizeof(*unchecked_jni_NativeInterface) - sizeof(char *));) 2379 assert(*lastPtr != 0, 2380 "Mismatched JNINativeInterface tables, check for new entries"); 2381 2382 // with -verbose:jni this message will print 2383 log_debug(jni, resolve)("Checked JNI functions are being used to validate JNI usage"); 2384 2385 return &checked_jni_NativeInterface; 2386 } --- EOF ---