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