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