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