1 /* 2 * Copyright (C) 2008 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #include "jni_internal.h" 18 19 #include <sys/mman.h> 20 #include <zlib.h> 21 22 #include "base/logging.h" 23 #include "class_linker.h" 24 #include "class_linker-inl.h" 25 #include "dex_file-inl.h" 26 #include "field_helper.h" 27 #include "gc/space/space.h" 28 #include "mirror/art_field-inl.h" 29 #include "mirror/art_method-inl.h" 30 #include "mirror/class-inl.h" 31 #include "mirror/object-inl.h" 32 #include "mirror/object_array-inl.h" 33 #include "mirror/string-inl.h" 34 #include "mirror/throwable.h" 35 #include "runtime.h" 36 #include "scoped_thread_state_change.h" 37 #include "thread.h" 38 39 namespace art { 40 41 static void JniAbort(const char* jni_function_name, const char* msg) { 42 Thread* self = Thread::Current(); 43 ScopedObjectAccess soa(self); 44 mirror::ArtMethod* current_method = self->GetCurrentMethod(nullptr); 45 46 std::ostringstream os; 47 os << "JNI DETECTED ERROR IN APPLICATION: " << msg; 48 49 if (jni_function_name != nullptr) { 50 os << "\n in call to " << jni_function_name; 51 } 52 // TODO: is this useful given that we're about to dump the calling thread's stack? 53 if (current_method != nullptr) { 54 os << "\n from " << PrettyMethod(current_method); 55 } 56 os << "\n"; 57 self->Dump(os); 58 59 JavaVMExt* vm = Runtime::Current()->GetJavaVM(); 60 if (vm->check_jni_abort_hook != nullptr) { 61 vm->check_jni_abort_hook(vm->check_jni_abort_hook_data, os.str()); 62 } else { 63 // Ensure that we get a native stack trace for this thread. 64 self->TransitionFromRunnableToSuspended(kNative); 65 LOG(FATAL) << os.str(); 66 self->TransitionFromSuspendedToRunnable(); // Unreachable, keep annotalysis happy. 67 } 68 } 69 70 static void JniAbortV(const char* jni_function_name, const char* fmt, va_list ap) { 71 std::string msg; 72 StringAppendV(&msg, fmt, ap); 73 JniAbort(jni_function_name, msg.c_str()); 74 } 75 76 void JniAbortF(const char* jni_function_name, const char* fmt, ...) { 77 va_list args; 78 va_start(args, fmt); 79 JniAbortV(jni_function_name, fmt, args); 80 va_end(args); 81 } 82 83 /* 84 * =========================================================================== 85 * JNI function helpers 86 * =========================================================================== 87 */ 88 89 static bool IsHandleScopeLocalRef(JNIEnv* env, jobject localRef) { 90 return GetIndirectRefKind(localRef) == kHandleScopeOrInvalid && 91 reinterpret_cast<JNIEnvExt*>(env)->self->HandleScopeContains(localRef); 92 } 93 94 // Flags passed into ScopedCheck. 95 #define kFlag_Default 0x0000 96 97 #define kFlag_CritBad 0x0000 // Calling while in critical is not allowed. 98 #define kFlag_CritOkay 0x0001 // Calling while in critical is allowed. 99 #define kFlag_CritGet 0x0002 // This is a critical "get". 100 #define kFlag_CritRelease 0x0003 // This is a critical "release". 101 #define kFlag_CritMask 0x0003 // Bit mask to get "crit" value. 102 103 #define kFlag_ExcepBad 0x0000 // Raised exceptions are not allowed. 104 #define kFlag_ExcepOkay 0x0004 // Raised exceptions are allowed. 105 106 #define kFlag_Release 0x0010 // Are we in a non-critical release function? 107 #define kFlag_NullableUtf 0x0020 // Are our UTF parameters nullable? 108 109 #define kFlag_Invocation 0x8000 // Part of the invocation interface (JavaVM*). 110 111 #define kFlag_ForceTrace 0x80000000 // Add this to a JNI function's flags if you want to trace every call. 112 113 static const char* gBuiltInPrefixes[] = { 114 "Landroid/", 115 "Lcom/android/", 116 "Lcom/google/android/", 117 "Ldalvik/", 118 "Ljava/", 119 "Ljavax/", 120 "Llibcore/", 121 "Lorg/apache/harmony/", 122 nullptr 123 }; 124 125 static bool ShouldTrace(JavaVMExt* vm, mirror::ArtMethod* method) 126 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 127 // If both "-Xcheck:jni" and "-Xjnitrace:" are enabled, we print trace messages 128 // when a native method that matches the -Xjnitrace argument calls a JNI function 129 // such as NewByteArray. 130 // If -verbose:third-party-jni is on, we want to log any JNI function calls 131 // made by a third-party native method. 132 std::string class_name(method->GetDeclaringClassDescriptor()); 133 if (!vm->trace.empty() && class_name.find(vm->trace) != std::string::npos) { 134 return true; 135 } 136 if (VLOG_IS_ON(third_party_jni)) { 137 // Return true if we're trying to log all third-party JNI activity and 'method' doesn't look 138 // like part of Android. 139 for (size_t i = 0; gBuiltInPrefixes[i] != nullptr; ++i) { 140 if (StartsWith(class_name, gBuiltInPrefixes[i])) { 141 return false; 142 } 143 } 144 return true; 145 } 146 return false; 147 } 148 149 class ScopedCheck { 150 public: 151 // For JNIEnv* functions. 152 explicit ScopedCheck(JNIEnv* env, int flags, const char* functionName) 153 SHARED_LOCK_FUNCTION(Locks::mutator_lock_) 154 : soa_(env) { 155 Init(flags, functionName, true); 156 CheckThread(flags); 157 } 158 159 // For JavaVM* functions. 160 // TODO: it's not correct that this is a lock function, but making it so aids annotalysis. 161 explicit ScopedCheck(JavaVM* vm, bool has_method, const char* functionName) 162 SHARED_LOCK_FUNCTION(Locks::mutator_lock_) 163 : soa_(vm) { 164 Init(kFlag_Invocation, functionName, has_method); 165 } 166 167 ~ScopedCheck() UNLOCK_FUNCTION(Locks::mutator_lock_) {} 168 169 const ScopedObjectAccess& soa() { 170 return soa_; 171 } 172 173 bool ForceCopy() { 174 return Runtime::Current()->GetJavaVM()->force_copy; 175 } 176 177 // Checks that 'class_name' is a valid "fully-qualified" JNI class name, like "java/lang/Thread" 178 // or "[Ljava/lang/Object;". A ClassLoader can actually normalize class names a couple of 179 // times, so using "java.lang.Thread" instead of "java/lang/Thread" might work in some 180 // circumstances, but this is incorrect. 181 void CheckClassName(const char* class_name) { 182 if ((class_name == nullptr) || !IsValidJniClassName(class_name)) { 183 JniAbortF(function_name_, 184 "illegal class name '%s'\n" 185 " (should be of the form 'package/Class', [Lpackage/Class;' or '[[B')", 186 class_name); 187 } 188 } 189 190 /* 191 * Verify that the field is of the appropriate type. If the field has an 192 * object type, "java_object" is the object we're trying to assign into it. 193 * 194 * Works for both static and instance fields. 195 */ 196 void CheckFieldType(jvalue value, jfieldID fid, char prim, bool isStatic) 197 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 198 StackHandleScope<1> hs(Thread::Current()); 199 Handle<mirror::ArtField> f(hs.NewHandle(CheckFieldID(fid))); 200 if (f.Get() == nullptr) { 201 return; 202 } 203 mirror::Class* field_type = FieldHelper(f).GetType(); 204 if (!field_type->IsPrimitive()) { 205 jobject java_object = value.l; 206 if (java_object != nullptr) { 207 mirror::Object* obj = soa_.Decode<mirror::Object*>(java_object); 208 // If java_object is a weak global ref whose referent has been cleared, 209 // obj will be NULL. Otherwise, obj should always be non-NULL 210 // and valid. 211 if (!Runtime::Current()->GetHeap()->IsValidObjectAddress(obj)) { 212 Runtime::Current()->GetHeap()->DumpSpaces(LOG(ERROR)); 213 JniAbortF(function_name_, "field operation on invalid %s: %p", 214 ToStr<IndirectRefKind>(GetIndirectRefKind(java_object)).c_str(), java_object); 215 return; 216 } else { 217 if (!obj->InstanceOf(field_type)) { 218 JniAbortF(function_name_, "attempt to set field %s with value of wrong type: %s", 219 PrettyField(f.Get()).c_str(), PrettyTypeOf(obj).c_str()); 220 return; 221 } 222 } 223 } 224 } else if (field_type != Runtime::Current()->GetClassLinker()->FindPrimitiveClass(prim)) { 225 JniAbortF(function_name_, "attempt to set field %s with value of wrong type: %c", 226 PrettyField(f.Get()).c_str(), prim); 227 return; 228 } 229 230 if (isStatic != f.Get()->IsStatic()) { 231 if (isStatic) { 232 JniAbortF(function_name_, "accessing non-static field %s as static", 233 PrettyField(f.Get()).c_str()); 234 } else { 235 JniAbortF(function_name_, "accessing static field %s as non-static", 236 PrettyField(f.Get()).c_str()); 237 } 238 return; 239 } 240 } 241 242 /* 243 * Verify that this instance field ID is valid for this object. 244 * 245 * Assumes "jobj" has already been validated. 246 */ 247 void CheckInstanceFieldID(jobject java_object, jfieldID fid) 248 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 249 mirror::Object* o = soa_.Decode<mirror::Object*>(java_object); 250 if (o == nullptr || !Runtime::Current()->GetHeap()->IsValidObjectAddress(o)) { 251 Runtime::Current()->GetHeap()->DumpSpaces(LOG(ERROR)); 252 JniAbortF(function_name_, "field operation on invalid %s: %p", 253 ToStr<IndirectRefKind>(GetIndirectRefKind(java_object)).c_str(), java_object); 254 return; 255 } 256 257 mirror::ArtField* f = CheckFieldID(fid); 258 if (f == nullptr) { 259 return; 260 } 261 mirror::Class* c = o->GetClass(); 262 if (c->FindInstanceField(f->GetName(), f->GetTypeDescriptor()) == nullptr) { 263 JniAbortF(function_name_, "jfieldID %s not valid for an object of class %s", 264 PrettyField(f).c_str(), PrettyTypeOf(o).c_str()); 265 } 266 } 267 268 /* 269 * Verify that the pointer value is non-NULL. 270 */ 271 void CheckNonNull(const void* ptr) { 272 if (ptr == nullptr) { 273 JniAbortF(function_name_, "non-nullable argument was NULL"); 274 } 275 } 276 277 /* 278 * Verify that the method's return type matches the type of call. 279 * 'expectedType' will be "L" for all objects, including arrays. 280 */ 281 void CheckSig(jmethodID mid, const char* expectedType, bool isStatic) 282 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 283 mirror::ArtMethod* m = CheckMethodID(mid); 284 if (m == nullptr) { 285 return; 286 } 287 if (*expectedType != m->GetShorty()[0]) { 288 JniAbortF(function_name_, "the return type of %s does not match %s", 289 function_name_, PrettyMethod(m).c_str()); 290 } 291 if (isStatic != m->IsStatic()) { 292 if (isStatic) { 293 JniAbortF(function_name_, "calling non-static method %s with %s", 294 PrettyMethod(m).c_str(), function_name_); 295 } else { 296 JniAbortF(function_name_, "calling static method %s with %s", 297 PrettyMethod(m).c_str(), function_name_); 298 } 299 } 300 } 301 302 /* 303 * Verify that this static field ID is valid for this class. 304 * 305 * Assumes "java_class" has already been validated. 306 */ 307 void CheckStaticFieldID(jclass java_class, jfieldID fid) 308 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 309 mirror::Class* c = soa_.Decode<mirror::Class*>(java_class); 310 mirror::ArtField* f = CheckFieldID(fid); 311 if (f == nullptr) { 312 return; 313 } 314 if (f->GetDeclaringClass() != c) { 315 JniAbortF(function_name_, "static jfieldID %p not valid for class %s", 316 fid, PrettyClass(c).c_str()); 317 } 318 } 319 320 /* 321 * Verify that "mid" is appropriate for "java_class". 322 * 323 * A mismatch isn't dangerous, because the jmethodID defines the class. In 324 * fact, java_class is unused in the implementation. It's best if we don't 325 * allow bad code in the system though. 326 * 327 * Instances of "java_class" must be instances of the method's declaring class. 328 */ 329 void CheckStaticMethod(jclass java_class, jmethodID mid) 330 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 331 mirror::ArtMethod* m = CheckMethodID(mid); 332 if (m == nullptr) { 333 return; 334 } 335 mirror::Class* c = soa_.Decode<mirror::Class*>(java_class); 336 if (!m->GetDeclaringClass()->IsAssignableFrom(c)) { 337 JniAbortF(function_name_, "can't call static %s on class %s", 338 PrettyMethod(m).c_str(), PrettyClass(c).c_str()); 339 } 340 } 341 342 /* 343 * Verify that "mid" is appropriate for "jobj". 344 * 345 * Make sure the object is an instance of the method's declaring class. 346 * (Note the mid might point to a declaration in an interface; this 347 * will be handled automatically by the instanceof check.) 348 */ 349 void CheckVirtualMethod(jobject java_object, jmethodID mid) 350 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 351 mirror::ArtMethod* m = CheckMethodID(mid); 352 if (m == nullptr) { 353 return; 354 } 355 mirror::Object* o = soa_.Decode<mirror::Object*>(java_object); 356 if (o == nullptr) { 357 JniAbortF(function_name_, "can't call %s on null object", PrettyMethod(m).c_str()); 358 } else if (!o->InstanceOf(m->GetDeclaringClass())) { 359 JniAbortF(function_name_, "can't call %s on instance of %s", 360 PrettyMethod(m).c_str(), PrettyTypeOf(o).c_str()); 361 } 362 } 363 364 /** 365 * The format string is a sequence of the following characters, 366 * and must be followed by arguments of the corresponding types 367 * in the same order. 368 * 369 * Java primitive types: 370 * B - jbyte 371 * C - jchar 372 * D - jdouble 373 * F - jfloat 374 * I - jint 375 * J - jlong 376 * S - jshort 377 * Z - jboolean (shown as true and false) 378 * V - void 379 * 380 * Java reference types: 381 * L - jobject 382 * a - jarray 383 * c - jclass 384 * s - jstring 385 * 386 * JNI types: 387 * b - jboolean (shown as JNI_TRUE and JNI_FALSE) 388 * f - jfieldID 389 * m - jmethodID 390 * p - void* 391 * r - jint (for release mode arguments) 392 * u - const char* (Modified UTF-8) 393 * z - jsize (for lengths; use i if negative values are okay) 394 * v - JavaVM* 395 * E - JNIEnv* 396 * . - no argument; just print "..." (used for varargs JNI calls) 397 * 398 * Use the kFlag_NullableUtf flag where 'u' field(s) are nullable. 399 */ 400 void Check(bool entry, const char* fmt0, ...) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 401 va_list ap; 402 403 mirror::ArtMethod* traceMethod = nullptr; 404 if (has_method_ && (!soa_.Vm()->trace.empty() || VLOG_IS_ON(third_party_jni))) { 405 // We need to guard some of the invocation interface's calls: a bad caller might 406 // use DetachCurrentThread or GetEnv on a thread that's not yet attached. 407 Thread* self = Thread::Current(); 408 if ((flags_ & kFlag_Invocation) == 0 || self != nullptr) { 409 traceMethod = self->GetCurrentMethod(nullptr); 410 } 411 } 412 413 if (((flags_ & kFlag_ForceTrace) != 0) || 414 (traceMethod != nullptr && ShouldTrace(soa_.Vm(), traceMethod))) { 415 va_start(ap, fmt0); 416 std::string msg; 417 for (const char* fmt = fmt0; *fmt;) { 418 char ch = *fmt++; 419 if (ch == 'B') { // jbyte 420 jbyte b = va_arg(ap, int); 421 if (b >= 0 && b < 10) { 422 StringAppendF(&msg, "%d", b); 423 } else { 424 StringAppendF(&msg, "%#x (%d)", b, b); 425 } 426 } else if (ch == 'C') { // jchar 427 jchar c = va_arg(ap, int); 428 if (c < 0x7f && c >= ' ') { 429 StringAppendF(&msg, "U+%x ('%c')", c, c); 430 } else { 431 StringAppendF(&msg, "U+%x", c); 432 } 433 } else if (ch == 'F' || ch == 'D') { // jfloat, jdouble 434 StringAppendF(&msg, "%g", va_arg(ap, double)); 435 } else if (ch == 'I' || ch == 'S') { // jint, jshort 436 StringAppendF(&msg, "%d", va_arg(ap, int)); 437 } else if (ch == 'J') { // jlong 438 StringAppendF(&msg, "%" PRId64, va_arg(ap, jlong)); 439 } else if (ch == 'Z') { // jboolean 440 StringAppendF(&msg, "%s", va_arg(ap, int) ? "true" : "false"); 441 } else if (ch == 'V') { // void 442 msg += "void"; 443 } else if (ch == 'v') { // JavaVM* 444 JavaVM* vm = va_arg(ap, JavaVM*); 445 StringAppendF(&msg, "(JavaVM*)%p", vm); 446 } else if (ch == 'E') { // JNIEnv* 447 JNIEnv* env = va_arg(ap, JNIEnv*); 448 StringAppendF(&msg, "(JNIEnv*)%p", env); 449 } else if (ch == 'L' || ch == 'a' || ch == 's') { // jobject, jarray, jstring 450 // For logging purposes, these are identical. 451 jobject o = va_arg(ap, jobject); 452 if (o == nullptr) { 453 msg += "NULL"; 454 } else { 455 StringAppendF(&msg, "%p", o); 456 } 457 } else if (ch == 'b') { // jboolean (JNI-style) 458 jboolean b = va_arg(ap, int); 459 msg += (b ? "JNI_TRUE" : "JNI_FALSE"); 460 } else if (ch == 'c') { // jclass 461 jclass jc = va_arg(ap, jclass); 462 mirror::Class* c = reinterpret_cast<mirror::Class*>(Thread::Current()->DecodeJObject(jc)); 463 if (c == nullptr) { 464 msg += "NULL"; 465 } else if (c == kInvalidIndirectRefObject || 466 !Runtime::Current()->GetHeap()->IsValidObjectAddress(c)) { 467 StringAppendF(&msg, "INVALID POINTER:%p", jc); 468 } else if (!c->IsClass()) { 469 msg += "INVALID NON-CLASS OBJECT OF TYPE:" + PrettyTypeOf(c); 470 } else { 471 msg += PrettyClass(c); 472 if (!entry) { 473 StringAppendF(&msg, " (%p)", jc); 474 } 475 } 476 } else if (ch == 'f') { // jfieldID 477 jfieldID fid = va_arg(ap, jfieldID); 478 mirror::ArtField* f = reinterpret_cast<mirror::ArtField*>(fid); 479 msg += PrettyField(f); 480 if (!entry) { 481 StringAppendF(&msg, " (%p)", fid); 482 } 483 } else if (ch == 'z') { // non-negative jsize 484 // You might expect jsize to be size_t, but it's not; it's the same as jint. 485 // We only treat this specially so we can do the non-negative check. 486 // TODO: maybe this wasn't worth it? 487 jint i = va_arg(ap, jint); 488 StringAppendF(&msg, "%d", i); 489 } else if (ch == 'm') { // jmethodID 490 jmethodID mid = va_arg(ap, jmethodID); 491 mirror::ArtMethod* m = reinterpret_cast<mirror::ArtMethod*>(mid); 492 msg += PrettyMethod(m); 493 if (!entry) { 494 StringAppendF(&msg, " (%p)", mid); 495 } 496 } else if (ch == 'p') { // void* ("pointer") 497 void* p = va_arg(ap, void*); 498 if (p == nullptr) { 499 msg += "NULL"; 500 } else { 501 StringAppendF(&msg, "(void*) %p", p); 502 } 503 } else if (ch == 'r') { // jint (release mode) 504 jint releaseMode = va_arg(ap, jint); 505 if (releaseMode == 0) { 506 msg += "0"; 507 } else if (releaseMode == JNI_ABORT) { 508 msg += "JNI_ABORT"; 509 } else if (releaseMode == JNI_COMMIT) { 510 msg += "JNI_COMMIT"; 511 } else { 512 StringAppendF(&msg, "invalid release mode %d", releaseMode); 513 } 514 } else if (ch == 'u') { // const char* (Modified UTF-8) 515 const char* utf = va_arg(ap, const char*); 516 if (utf == nullptr) { 517 msg += "NULL"; 518 } else { 519 StringAppendF(&msg, "\"%s\"", utf); 520 } 521 } else if (ch == '.') { 522 msg += "..."; 523 } else { 524 JniAbortF(function_name_, "unknown trace format specifier: %c", ch); 525 return; 526 } 527 if (*fmt) { 528 StringAppendF(&msg, ", "); 529 } 530 } 531 va_end(ap); 532 533 if ((flags_ & kFlag_ForceTrace) != 0) { 534 LOG(INFO) << "JNI: call to " << function_name_ << "(" << msg << ")"; 535 } else if (entry) { 536 if (has_method_) { 537 std::string methodName(PrettyMethod(traceMethod, false)); 538 LOG(INFO) << "JNI: " << methodName << " -> " << function_name_ << "(" << msg << ")"; 539 indent_ = methodName.size() + 1; 540 } else { 541 LOG(INFO) << "JNI: -> " << function_name_ << "(" << msg << ")"; 542 indent_ = 0; 543 } 544 } else { 545 LOG(INFO) << StringPrintf("JNI: %*s<- %s returned %s", indent_, "", function_name_, msg.c_str()); 546 } 547 } 548 549 // We always do the thorough checks on entry, and never on exit... 550 if (entry) { 551 va_start(ap, fmt0); 552 for (const char* fmt = fmt0; *fmt; ++fmt) { 553 char ch = *fmt; 554 if (ch == 'a') { 555 CheckArray(va_arg(ap, jarray)); 556 } else if (ch == 'c') { 557 CheckInstance(kClass, va_arg(ap, jclass)); 558 } else if (ch == 'L') { 559 CheckObject(va_arg(ap, jobject)); 560 } else if (ch == 'r') { 561 CheckReleaseMode(va_arg(ap, jint)); 562 } else if (ch == 's') { 563 CheckInstance(kString, va_arg(ap, jstring)); 564 } else if (ch == 'u') { 565 if ((flags_ & kFlag_Release) != 0) { 566 CheckNonNull(va_arg(ap, const char*)); 567 } else { 568 bool nullable = ((flags_ & kFlag_NullableUtf) != 0); 569 CheckUtfString(va_arg(ap, const char*), nullable); 570 } 571 } else if (ch == 'z') { 572 CheckLengthPositive(va_arg(ap, jsize)); 573 } else if (strchr("BCISZbfmpEv", ch) != nullptr) { 574 va_arg(ap, uint32_t); // Skip this argument. 575 } else if (ch == 'D' || ch == 'F') { 576 va_arg(ap, double); // Skip this argument. 577 } else if (ch == 'J') { 578 va_arg(ap, uint64_t); // Skip this argument. 579 } else if (ch == '.') { 580 } else { 581 LOG(FATAL) << "Unknown check format specifier: " << ch; 582 } 583 } 584 va_end(ap); 585 } 586 } 587 588 enum InstanceKind { 589 kClass, 590 kDirectByteBuffer, 591 kObject, 592 kString, 593 kThrowable, 594 }; 595 596 /* 597 * Verify that "jobj" is a valid non-NULL object reference, and points to 598 * an instance of expectedClass. 599 * 600 * Because we're looking at an object on the GC heap, we have to switch 601 * to "running" mode before doing the checks. 602 */ 603 bool CheckInstance(InstanceKind kind, jobject java_object) 604 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 605 const char* what = nullptr; 606 switch (kind) { 607 case kClass: 608 what = "jclass"; 609 break; 610 case kDirectByteBuffer: 611 what = "direct ByteBuffer"; 612 break; 613 case kObject: 614 what = "jobject"; 615 break; 616 case kString: 617 what = "jstring"; 618 break; 619 case kThrowable: 620 what = "jthrowable"; 621 break; 622 default: 623 LOG(FATAL) << "Unknown kind " << static_cast<int>(kind); 624 } 625 626 if (java_object == nullptr) { 627 JniAbortF(function_name_, "%s received null %s", function_name_, what); 628 return false; 629 } 630 631 mirror::Object* obj = soa_.Decode<mirror::Object*>(java_object); 632 if (!Runtime::Current()->GetHeap()->IsValidObjectAddress(obj)) { 633 Runtime::Current()->GetHeap()->DumpSpaces(LOG(ERROR)); 634 JniAbortF(function_name_, "%s is an invalid %s: %p (%p)", 635 what, ToStr<IndirectRefKind>(GetIndirectRefKind(java_object)).c_str(), java_object, obj); 636 return false; 637 } 638 639 bool okay = true; 640 switch (kind) { 641 case kClass: 642 okay = obj->IsClass(); 643 break; 644 case kDirectByteBuffer: 645 UNIMPLEMENTED(FATAL); 646 break; 647 case kString: 648 okay = obj->GetClass()->IsStringClass(); 649 break; 650 case kThrowable: 651 okay = obj->GetClass()->IsThrowableClass(); 652 break; 653 case kObject: 654 break; 655 } 656 if (!okay) { 657 JniAbortF(function_name_, "%s has wrong type: %s", what, PrettyTypeOf(obj).c_str()); 658 return false; 659 } 660 661 return true; 662 } 663 664 private: 665 // Set "has_method" to true if we have a valid thread with a method pointer. 666 // We won't have one before attaching a thread, after detaching a thread, or 667 // when shutting down the runtime. 668 void Init(int flags, const char* functionName, bool has_method) { 669 flags_ = flags; 670 function_name_ = functionName; 671 has_method_ = has_method; 672 } 673 674 /* 675 * Verify that "array" is non-NULL and points to an Array object. 676 * 677 * Since we're dealing with objects, switch to "running" mode. 678 */ 679 void CheckArray(jarray java_array) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 680 if (java_array == nullptr) { 681 JniAbortF(function_name_, "jarray was NULL"); 682 return; 683 } 684 685 mirror::Array* a = soa_.Decode<mirror::Array*>(java_array); 686 if (!Runtime::Current()->GetHeap()->IsValidObjectAddress(a)) { 687 Runtime::Current()->GetHeap()->DumpSpaces(LOG(ERROR)); 688 JniAbortF(function_name_, "jarray is an invalid %s: %p (%p)", 689 ToStr<IndirectRefKind>(GetIndirectRefKind(java_array)).c_str(), java_array, a); 690 } else if (!a->IsArrayInstance()) { 691 JniAbortF(function_name_, "jarray argument has non-array type: %s", PrettyTypeOf(a).c_str()); 692 } 693 } 694 695 void CheckLengthPositive(jsize length) { 696 if (length < 0) { 697 JniAbortF(function_name_, "negative jsize: %d", length); 698 } 699 } 700 701 mirror::ArtField* CheckFieldID(jfieldID fid) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 702 if (fid == nullptr) { 703 JniAbortF(function_name_, "jfieldID was NULL"); 704 return nullptr; 705 } 706 mirror::ArtField* f = soa_.DecodeField(fid); 707 if (!Runtime::Current()->GetHeap()->IsValidObjectAddress(f) || !f->IsArtField()) { 708 Runtime::Current()->GetHeap()->DumpSpaces(LOG(ERROR)); 709 JniAbortF(function_name_, "invalid jfieldID: %p", fid); 710 return nullptr; 711 } 712 return f; 713 } 714 715 mirror::ArtMethod* CheckMethodID(jmethodID mid) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 716 if (mid == nullptr) { 717 JniAbortF(function_name_, "jmethodID was NULL"); 718 return nullptr; 719 } 720 mirror::ArtMethod* m = soa_.DecodeMethod(mid); 721 if (!Runtime::Current()->GetHeap()->IsValidObjectAddress(m) || !m->IsArtMethod()) { 722 Runtime::Current()->GetHeap()->DumpSpaces(LOG(ERROR)); 723 JniAbortF(function_name_, "invalid jmethodID: %p", mid); 724 return nullptr; 725 } 726 return m; 727 } 728 729 /* 730 * Verify that "jobj" is a valid object, and that it's an object that JNI 731 * is allowed to know about. We allow NULL references. 732 * 733 * Switches to "running" mode before performing checks. 734 */ 735 void CheckObject(jobject java_object) 736 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 737 if (java_object == nullptr) { 738 return; 739 } 740 741 mirror::Object* o = soa_.Decode<mirror::Object*>(java_object); 742 if (!Runtime::Current()->GetHeap()->IsValidObjectAddress(o)) { 743 Runtime::Current()->GetHeap()->DumpSpaces(LOG(ERROR)); 744 // TODO: when we remove work_around_app_jni_bugs, this should be impossible. 745 JniAbortF(function_name_, "native code passing in reference to invalid %s: %p", 746 ToStr<IndirectRefKind>(GetIndirectRefKind(java_object)).c_str(), java_object); 747 } 748 } 749 750 /* 751 * Verify that the "mode" argument passed to a primitive array Release 752 * function is one of the valid values. 753 */ 754 void CheckReleaseMode(jint mode) { 755 if (mode != 0 && mode != JNI_COMMIT && mode != JNI_ABORT) { 756 JniAbortF(function_name_, "unknown value for release mode: %d", mode); 757 } 758 } 759 760 void CheckThread(int flags) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 761 Thread* self = Thread::Current(); 762 if (self == nullptr) { 763 JniAbortF(function_name_, "a thread (tid %d) is making JNI calls without being attached", GetTid()); 764 return; 765 } 766 767 // Get the *correct* JNIEnv by going through our TLS pointer. 768 JNIEnvExt* threadEnv = self->GetJniEnv(); 769 770 // Verify that the current thread is (a) attached and (b) associated with 771 // this particular instance of JNIEnv. 772 if (soa_.Env() != threadEnv) { 773 JniAbortF(function_name_, "thread %s using JNIEnv* from thread %s", 774 ToStr<Thread>(*self).c_str(), ToStr<Thread>(*soa_.Self()).c_str()); 775 return; 776 } 777 778 // Verify that, if this thread previously made a critical "get" call, we 779 // do the corresponding "release" call before we try anything else. 780 switch (flags & kFlag_CritMask) { 781 case kFlag_CritOkay: // okay to call this method 782 break; 783 case kFlag_CritBad: // not okay to call 784 if (threadEnv->critical) { 785 JniAbortF(function_name_, "thread %s using JNI after critical get", ToStr<Thread>(*self).c_str()); 786 return; 787 } 788 break; 789 case kFlag_CritGet: // this is a "get" call 790 // Don't check here; we allow nested gets. 791 threadEnv->critical++; 792 break; 793 case kFlag_CritRelease: // this is a "release" call 794 threadEnv->critical--; 795 if (threadEnv->critical < 0) { 796 JniAbortF(function_name_, "thread %s called too many critical releases", ToStr<Thread>(*self).c_str()); 797 return; 798 } 799 break; 800 default: 801 LOG(FATAL) << "Bad flags (internal error): " << flags; 802 } 803 804 // Verify that, if an exception has been raised, the native code doesn't 805 // make any JNI calls other than the Exception* methods. 806 if ((flags & kFlag_ExcepOkay) == 0 && self->IsExceptionPending()) { 807 ThrowLocation throw_location; 808 mirror::Throwable* exception = self->GetException(&throw_location); 809 std::string type(PrettyTypeOf(exception)); 810 JniAbortF(function_name_, "JNI %s called with pending exception '%s' thrown in %s", 811 function_name_, type.c_str(), throw_location.Dump().c_str()); 812 return; 813 } 814 } 815 816 // Verifies that "bytes" points to valid Modified UTF-8 data. 817 void CheckUtfString(const char* bytes, bool nullable) { 818 if (bytes == nullptr) { 819 if (!nullable) { 820 JniAbortF(function_name_, "non-nullable const char* was NULL"); 821 return; 822 } 823 return; 824 } 825 826 const char* errorKind = nullptr; 827 uint8_t utf8 = CheckUtfBytes(bytes, &errorKind); 828 if (errorKind != nullptr) { 829 JniAbortF(function_name_, 830 "input is not valid Modified UTF-8: illegal %s byte %#x\n" 831 " string: '%s'", errorKind, utf8, bytes); 832 return; 833 } 834 } 835 836 static uint8_t CheckUtfBytes(const char* bytes, const char** errorKind) { 837 while (*bytes != '\0') { 838 uint8_t utf8 = *(bytes++); 839 // Switch on the high four bits. 840 switch (utf8 >> 4) { 841 case 0x00: 842 case 0x01: 843 case 0x02: 844 case 0x03: 845 case 0x04: 846 case 0x05: 847 case 0x06: 848 case 0x07: 849 // Bit pattern 0xxx. No need for any extra bytes. 850 break; 851 case 0x08: 852 case 0x09: 853 case 0x0a: 854 case 0x0b: 855 case 0x0f: 856 /* 857 * Bit pattern 10xx or 1111, which are illegal start bytes. 858 * Note: 1111 is valid for normal UTF-8, but not the 859 * Modified UTF-8 used here. 860 */ 861 *errorKind = "start"; 862 return utf8; 863 case 0x0e: 864 // Bit pattern 1110, so there are two additional bytes. 865 utf8 = *(bytes++); 866 if ((utf8 & 0xc0) != 0x80) { 867 *errorKind = "continuation"; 868 return utf8; 869 } 870 // Fall through to take care of the final byte. 871 case 0x0c: 872 case 0x0d: 873 // Bit pattern 110x, so there is one additional byte. 874 utf8 = *(bytes++); 875 if ((utf8 & 0xc0) != 0x80) { 876 *errorKind = "continuation"; 877 return utf8; 878 } 879 break; 880 } 881 } 882 return 0; 883 } 884 885 const ScopedObjectAccess soa_; 886 const char* function_name_; 887 int flags_; 888 bool has_method_; 889 int indent_; 890 891 DISALLOW_COPY_AND_ASSIGN(ScopedCheck); 892 }; 893 894 #define CHECK_JNI_ENTRY(flags, types, args...) \ 895 ScopedCheck sc(env, flags, __FUNCTION__); \ 896 sc.Check(true, types, ##args) 897 898 #define CHECK_JNI_EXIT(type, exp) ({ \ 899 auto _rc = (exp); \ 900 sc.Check(false, type, _rc); \ 901 _rc; }) 902 #define CHECK_JNI_EXIT_VOID() \ 903 sc.Check(false, "V") 904 905 /* 906 * =========================================================================== 907 * Guarded arrays 908 * =========================================================================== 909 */ 910 911 #define kGuardLen 512 /* must be multiple of 2 */ 912 #define kGuardPattern 0xd5e3 /* uncommon values; d5e3d5e3 invalid addr */ 913 #define kGuardMagic 0xffd5aa96 914 915 /* this gets tucked in at the start of the buffer; struct size must be even */ 916 struct GuardedCopy { 917 uint32_t magic; 918 uLong adler; 919 size_t original_length; 920 const void* original_ptr; 921 922 /* find the GuardedCopy given the pointer into the "live" data */ 923 static inline const GuardedCopy* FromData(const void* dataBuf) { 924 return reinterpret_cast<const GuardedCopy*>(ActualBuffer(dataBuf)); 925 } 926 927 /* 928 * Create an over-sized buffer to hold the contents of "buf". Copy it in, 929 * filling in the area around it with guard data. 930 * 931 * We use a 16-bit pattern to make a rogue memset less likely to elude us. 932 */ 933 static void* Create(const void* buf, size_t len, bool modOkay) { 934 size_t newLen = ActualLength(len); 935 uint8_t* newBuf = DebugAlloc(newLen); 936 937 // Fill it in with a pattern. 938 uint16_t* pat = reinterpret_cast<uint16_t*>(newBuf); 939 for (size_t i = 0; i < newLen / 2; i++) { 940 *pat++ = kGuardPattern; 941 } 942 943 // Copy the data in; note "len" could be zero. 944 memcpy(newBuf + kGuardLen / 2, buf, len); 945 946 // If modification is not expected, grab a checksum. 947 uLong adler = 0; 948 if (!modOkay) { 949 adler = adler32(0L, Z_NULL, 0); 950 adler = adler32(adler, reinterpret_cast<const Bytef*>(buf), len); 951 *reinterpret_cast<uLong*>(newBuf) = adler; 952 } 953 954 GuardedCopy* pExtra = reinterpret_cast<GuardedCopy*>(newBuf); 955 pExtra->magic = kGuardMagic; 956 pExtra->adler = adler; 957 pExtra->original_ptr = buf; 958 pExtra->original_length = len; 959 960 return newBuf + kGuardLen / 2; 961 } 962 963 /* 964 * Free up the guard buffer, scrub it, and return the original pointer. 965 */ 966 static void* Destroy(void* dataBuf) { 967 const GuardedCopy* pExtra = GuardedCopy::FromData(dataBuf); 968 void* original_ptr = const_cast<void*>(pExtra->original_ptr); 969 size_t len = pExtra->original_length; 970 DebugFree(dataBuf, len); 971 return original_ptr; 972 } 973 974 /* 975 * Verify the guard area and, if "modOkay" is false, that the data itself 976 * has not been altered. 977 * 978 * The caller has already checked that "dataBuf" is non-NULL. 979 */ 980 static void Check(const char* functionName, const void* dataBuf, bool modOkay) { 981 static const uint32_t kMagicCmp = kGuardMagic; 982 const uint8_t* fullBuf = ActualBuffer(dataBuf); 983 const GuardedCopy* pExtra = GuardedCopy::FromData(dataBuf); 984 985 // Before we do anything with "pExtra", check the magic number. We 986 // do the check with memcmp rather than "==" in case the pointer is 987 // unaligned. If it points to completely bogus memory we're going 988 // to crash, but there's no easy way around that. 989 if (memcmp(&pExtra->magic, &kMagicCmp, 4) != 0) { 990 uint8_t buf[4]; 991 memcpy(buf, &pExtra->magic, 4); 992 JniAbortF(functionName, 993 "guard magic does not match (found 0x%02x%02x%02x%02x) -- incorrect data pointer %p?", 994 buf[3], buf[2], buf[1], buf[0], dataBuf); // Assumes little-endian. 995 } 996 997 size_t len = pExtra->original_length; 998 999 // Check bottom half of guard; skip over optional checksum storage. 1000 const uint16_t* pat = reinterpret_cast<const uint16_t*>(fullBuf); 1001 for (size_t i = sizeof(GuardedCopy) / 2; i < (kGuardLen / 2 - sizeof(GuardedCopy)) / 2; i++) { 1002 if (pat[i] != kGuardPattern) { 1003 JniAbortF(functionName, "guard pattern(1) disturbed at %p +%zd", fullBuf, i*2); 1004 } 1005 } 1006 1007 int offset = kGuardLen / 2 + len; 1008 if (offset & 0x01) { 1009 // Odd byte; expected value depends on endian. 1010 const uint16_t patSample = kGuardPattern; 1011 uint8_t expected_byte = reinterpret_cast<const uint8_t*>(&patSample)[1]; 1012 if (fullBuf[offset] != expected_byte) { 1013 JniAbortF(functionName, "guard pattern disturbed in odd byte after %p +%d 0x%02x 0x%02x", 1014 fullBuf, offset, fullBuf[offset], expected_byte); 1015 } 1016 offset++; 1017 } 1018 1019 // Check top half of guard. 1020 pat = reinterpret_cast<const uint16_t*>(fullBuf + offset); 1021 for (size_t i = 0; i < kGuardLen / 4; i++) { 1022 if (pat[i] != kGuardPattern) { 1023 JniAbortF(functionName, "guard pattern(2) disturbed at %p +%zd", fullBuf, offset + i*2); 1024 } 1025 } 1026 1027 // If modification is not expected, verify checksum. Strictly speaking 1028 // this is wrong: if we told the client that we made a copy, there's no 1029 // reason they can't alter the buffer. 1030 if (!modOkay) { 1031 uLong adler = adler32(0L, Z_NULL, 0); 1032 adler = adler32(adler, (const Bytef*)dataBuf, len); 1033 if (pExtra->adler != adler) { 1034 JniAbortF(functionName, "buffer modified (0x%08lx vs 0x%08lx) at address %p", 1035 pExtra->adler, adler, dataBuf); 1036 } 1037 } 1038 } 1039 1040 private: 1041 static uint8_t* DebugAlloc(size_t len) { 1042 void* result = mmap(nullptr, len, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANON, -1, 0); 1043 if (result == MAP_FAILED) { 1044 PLOG(FATAL) << "GuardedCopy::create mmap(" << len << ") failed"; 1045 } 1046 return reinterpret_cast<uint8_t*>(result); 1047 } 1048 1049 static void DebugFree(void* dataBuf, size_t len) { 1050 uint8_t* fullBuf = ActualBuffer(dataBuf); 1051 size_t totalByteCount = ActualLength(len); 1052 // TODO: we could mprotect instead, and keep the allocation around for a while. 1053 // This would be even more expensive, but it might catch more errors. 1054 // if (mprotect(fullBuf, totalByteCount, PROT_NONE) != 0) { 1055 // PLOG(WARNING) << "mprotect(PROT_NONE) failed"; 1056 // } 1057 if (munmap(fullBuf, totalByteCount) != 0) { 1058 PLOG(FATAL) << "munmap(" << reinterpret_cast<void*>(fullBuf) << ", " << totalByteCount << ") failed"; 1059 } 1060 } 1061 1062 static const uint8_t* ActualBuffer(const void* dataBuf) { 1063 return reinterpret_cast<const uint8_t*>(dataBuf) - kGuardLen / 2; 1064 } 1065 1066 static uint8_t* ActualBuffer(void* dataBuf) { 1067 return reinterpret_cast<uint8_t*>(dataBuf) - kGuardLen / 2; 1068 } 1069 1070 // Underlying length of a user allocation of 'length' bytes. 1071 static size_t ActualLength(size_t length) { 1072 return (length + kGuardLen + 1) & ~0x01; 1073 } 1074 }; 1075 1076 /* 1077 * Create a guarded copy of a primitive array. Modifications to the copied 1078 * data are allowed. Returns a pointer to the copied data. 1079 */ 1080 static void* CreateGuardedPACopy(JNIEnv* env, const jarray java_array, jboolean* isCopy) { 1081 ScopedObjectAccess soa(env); 1082 1083 mirror::Array* a = soa.Decode<mirror::Array*>(java_array); 1084 size_t component_size = a->GetClass()->GetComponentSize(); 1085 size_t byte_count = a->GetLength() * component_size; 1086 void* result = GuardedCopy::Create(a->GetRawData(component_size, 0), byte_count, true); 1087 if (isCopy != nullptr) { 1088 *isCopy = JNI_TRUE; 1089 } 1090 return result; 1091 } 1092 1093 /* 1094 * Perform the array "release" operation, which may or may not copy data 1095 * back into the managed heap, and may or may not release the underlying storage. 1096 */ 1097 static void ReleaseGuardedPACopy(JNIEnv* env, jarray java_array, void* dataBuf, int mode) { 1098 ScopedObjectAccess soa(env); 1099 mirror::Array* a = soa.Decode<mirror::Array*>(java_array); 1100 1101 GuardedCopy::Check(__FUNCTION__, dataBuf, true); 1102 1103 if (mode != JNI_ABORT) { 1104 size_t len = GuardedCopy::FromData(dataBuf)->original_length; 1105 memcpy(a->GetRawData(a->GetClass()->GetComponentSize(), 0), dataBuf, len); 1106 } 1107 if (mode != JNI_COMMIT) { 1108 GuardedCopy::Destroy(dataBuf); 1109 } 1110 } 1111 1112 /* 1113 * =========================================================================== 1114 * JNI functions 1115 * =========================================================================== 1116 */ 1117 1118 class CheckJNI { 1119 public: 1120 static jint GetVersion(JNIEnv* env) { 1121 CHECK_JNI_ENTRY(kFlag_Default, "E", env); 1122 return CHECK_JNI_EXIT("I", baseEnv(env)->GetVersion(env)); 1123 } 1124 1125 static jclass DefineClass(JNIEnv* env, const char* name, jobject loader, const jbyte* buf, jsize bufLen) { 1126 CHECK_JNI_ENTRY(kFlag_Default, "EuLpz", env, name, loader, buf, bufLen); 1127 sc.CheckClassName(name); 1128 return CHECK_JNI_EXIT("c", baseEnv(env)->DefineClass(env, name, loader, buf, bufLen)); 1129 } 1130 1131 static jclass FindClass(JNIEnv* env, const char* name) { 1132 CHECK_JNI_ENTRY(kFlag_Default, "Eu", env, name); 1133 sc.CheckClassName(name); 1134 return CHECK_JNI_EXIT("c", baseEnv(env)->FindClass(env, name)); 1135 } 1136 1137 static jclass GetSuperclass(JNIEnv* env, jclass c) { 1138 CHECK_JNI_ENTRY(kFlag_Default, "Ec", env, c); 1139 return CHECK_JNI_EXIT("c", baseEnv(env)->GetSuperclass(env, c)); 1140 } 1141 1142 static jboolean IsAssignableFrom(JNIEnv* env, jclass c1, jclass c2) { 1143 CHECK_JNI_ENTRY(kFlag_Default, "Ecc", env, c1, c2); 1144 return CHECK_JNI_EXIT("b", baseEnv(env)->IsAssignableFrom(env, c1, c2)); 1145 } 1146 1147 static jmethodID FromReflectedMethod(JNIEnv* env, jobject method) { 1148 CHECK_JNI_ENTRY(kFlag_Default, "EL", env, method); 1149 // TODO: check that 'field' is a java.lang.reflect.Method. 1150 return CHECK_JNI_EXIT("m", baseEnv(env)->FromReflectedMethod(env, method)); 1151 } 1152 1153 static jfieldID FromReflectedField(JNIEnv* env, jobject field) { 1154 CHECK_JNI_ENTRY(kFlag_Default, "EL", env, field); 1155 // TODO: check that 'field' is a java.lang.reflect.Field. 1156 return CHECK_JNI_EXIT("f", baseEnv(env)->FromReflectedField(env, field)); 1157 } 1158 1159 static jobject ToReflectedMethod(JNIEnv* env, jclass cls, jmethodID mid, jboolean isStatic) { 1160 CHECK_JNI_ENTRY(kFlag_Default, "Ecmb", env, cls, mid, isStatic); 1161 return CHECK_JNI_EXIT("L", baseEnv(env)->ToReflectedMethod(env, cls, mid, isStatic)); 1162 } 1163 1164 static jobject ToReflectedField(JNIEnv* env, jclass cls, jfieldID fid, jboolean isStatic) { 1165 CHECK_JNI_ENTRY(kFlag_Default, "Ecfb", env, cls, fid, isStatic); 1166 return CHECK_JNI_EXIT("L", baseEnv(env)->ToReflectedField(env, cls, fid, isStatic)); 1167 } 1168 1169 static jint Throw(JNIEnv* env, jthrowable obj) { 1170 CHECK_JNI_ENTRY(kFlag_Default, "EL", env, obj); 1171 // TODO: check that 'obj' is a java.lang.Throwable. 1172 return CHECK_JNI_EXIT("I", baseEnv(env)->Throw(env, obj)); 1173 } 1174 1175 static jint ThrowNew(JNIEnv* env, jclass c, const char* message) { 1176 CHECK_JNI_ENTRY(kFlag_NullableUtf, "Ecu", env, c, message); 1177 return CHECK_JNI_EXIT("I", baseEnv(env)->ThrowNew(env, c, message)); 1178 } 1179 1180 static jthrowable ExceptionOccurred(JNIEnv* env) { 1181 CHECK_JNI_ENTRY(kFlag_ExcepOkay, "E", env); 1182 return CHECK_JNI_EXIT("L", baseEnv(env)->ExceptionOccurred(env)); 1183 } 1184 1185 static void ExceptionDescribe(JNIEnv* env) { 1186 CHECK_JNI_ENTRY(kFlag_ExcepOkay, "E", env); 1187 baseEnv(env)->ExceptionDescribe(env); 1188 CHECK_JNI_EXIT_VOID(); 1189 } 1190 1191 static void ExceptionClear(JNIEnv* env) { 1192 CHECK_JNI_ENTRY(kFlag_ExcepOkay, "E", env); 1193 baseEnv(env)->ExceptionClear(env); 1194 CHECK_JNI_EXIT_VOID(); 1195 } 1196 1197 static void FatalError(JNIEnv* env, const char* msg) { 1198 // The JNI specification doesn't say it's okay to call FatalError with a pending exception, 1199 // but you're about to abort anyway, and it's quite likely that you have a pending exception, 1200 // and it's not unimaginable that you don't know that you do. So we allow it. 1201 CHECK_JNI_ENTRY(kFlag_ExcepOkay | kFlag_NullableUtf, "Eu", env, msg); 1202 baseEnv(env)->FatalError(env, msg); 1203 CHECK_JNI_EXIT_VOID(); 1204 } 1205 1206 static jint PushLocalFrame(JNIEnv* env, jint capacity) { 1207 CHECK_JNI_ENTRY(kFlag_Default | kFlag_ExcepOkay, "EI", env, capacity); 1208 return CHECK_JNI_EXIT("I", baseEnv(env)->PushLocalFrame(env, capacity)); 1209 } 1210 1211 static jobject PopLocalFrame(JNIEnv* env, jobject res) { 1212 CHECK_JNI_ENTRY(kFlag_Default | kFlag_ExcepOkay, "EL", env, res); 1213 return CHECK_JNI_EXIT("L", baseEnv(env)->PopLocalFrame(env, res)); 1214 } 1215 1216 static jobject NewGlobalRef(JNIEnv* env, jobject obj) { 1217 CHECK_JNI_ENTRY(kFlag_Default, "EL", env, obj); 1218 return CHECK_JNI_EXIT("L", baseEnv(env)->NewGlobalRef(env, obj)); 1219 } 1220 1221 static jobject NewLocalRef(JNIEnv* env, jobject ref) { 1222 CHECK_JNI_ENTRY(kFlag_Default, "EL", env, ref); 1223 return CHECK_JNI_EXIT("L", baseEnv(env)->NewLocalRef(env, ref)); 1224 } 1225 1226 static void DeleteGlobalRef(JNIEnv* env, jobject globalRef) { 1227 CHECK_JNI_ENTRY(kFlag_Default | kFlag_ExcepOkay, "EL", env, globalRef); 1228 if (globalRef != nullptr && GetIndirectRefKind(globalRef) != kGlobal) { 1229 JniAbortF(__FUNCTION__, "DeleteGlobalRef on %s: %p", 1230 ToStr<IndirectRefKind>(GetIndirectRefKind(globalRef)).c_str(), globalRef); 1231 } else { 1232 baseEnv(env)->DeleteGlobalRef(env, globalRef); 1233 CHECK_JNI_EXIT_VOID(); 1234 } 1235 } 1236 1237 static void DeleteWeakGlobalRef(JNIEnv* env, jweak weakGlobalRef) { 1238 CHECK_JNI_ENTRY(kFlag_Default | kFlag_ExcepOkay, "EL", env, weakGlobalRef); 1239 if (weakGlobalRef != nullptr && GetIndirectRefKind(weakGlobalRef) != kWeakGlobal) { 1240 JniAbortF(__FUNCTION__, "DeleteWeakGlobalRef on %s: %p", 1241 ToStr<IndirectRefKind>(GetIndirectRefKind(weakGlobalRef)).c_str(), weakGlobalRef); 1242 } else { 1243 baseEnv(env)->DeleteWeakGlobalRef(env, weakGlobalRef); 1244 CHECK_JNI_EXIT_VOID(); 1245 } 1246 } 1247 1248 static void DeleteLocalRef(JNIEnv* env, jobject localRef) { 1249 CHECK_JNI_ENTRY(kFlag_Default | kFlag_ExcepOkay, "EL", env, localRef); 1250 if (localRef != nullptr && GetIndirectRefKind(localRef) != kLocal && !IsHandleScopeLocalRef(env, localRef)) { 1251 JniAbortF(__FUNCTION__, "DeleteLocalRef on %s: %p", 1252 ToStr<IndirectRefKind>(GetIndirectRefKind(localRef)).c_str(), localRef); 1253 } else { 1254 baseEnv(env)->DeleteLocalRef(env, localRef); 1255 CHECK_JNI_EXIT_VOID(); 1256 } 1257 } 1258 1259 static jint EnsureLocalCapacity(JNIEnv *env, jint capacity) { 1260 CHECK_JNI_ENTRY(kFlag_Default, "EI", env, capacity); 1261 return CHECK_JNI_EXIT("I", baseEnv(env)->EnsureLocalCapacity(env, capacity)); 1262 } 1263 1264 static jboolean IsSameObject(JNIEnv* env, jobject ref1, jobject ref2) { 1265 CHECK_JNI_ENTRY(kFlag_Default, "ELL", env, ref1, ref2); 1266 return CHECK_JNI_EXIT("b", baseEnv(env)->IsSameObject(env, ref1, ref2)); 1267 } 1268 1269 static jobject AllocObject(JNIEnv* env, jclass c) { 1270 CHECK_JNI_ENTRY(kFlag_Default, "Ec", env, c); 1271 return CHECK_JNI_EXIT("L", baseEnv(env)->AllocObject(env, c)); 1272 } 1273 1274 static jobject NewObject(JNIEnv* env, jclass c, jmethodID mid, ...) { 1275 CHECK_JNI_ENTRY(kFlag_Default, "Ecm.", env, c, mid); 1276 va_list args; 1277 va_start(args, mid); 1278 jobject result = baseEnv(env)->NewObjectV(env, c, mid, args); 1279 va_end(args); 1280 return CHECK_JNI_EXIT("L", result); 1281 } 1282 1283 static jobject NewObjectV(JNIEnv* env, jclass c, jmethodID mid, va_list args) { 1284 CHECK_JNI_ENTRY(kFlag_Default, "Ecm.", env, c, mid); 1285 return CHECK_JNI_EXIT("L", baseEnv(env)->NewObjectV(env, c, mid, args)); 1286 } 1287 1288 static jobject NewObjectA(JNIEnv* env, jclass c, jmethodID mid, jvalue* args) { 1289 CHECK_JNI_ENTRY(kFlag_Default, "Ecm.", env, c, mid); 1290 return CHECK_JNI_EXIT("L", baseEnv(env)->NewObjectA(env, c, mid, args)); 1291 } 1292 1293 static jclass GetObjectClass(JNIEnv* env, jobject obj) { 1294 CHECK_JNI_ENTRY(kFlag_Default, "EL", env, obj); 1295 return CHECK_JNI_EXIT("c", baseEnv(env)->GetObjectClass(env, obj)); 1296 } 1297 1298 static jboolean IsInstanceOf(JNIEnv* env, jobject obj, jclass c) { 1299 CHECK_JNI_ENTRY(kFlag_Default, "ELc", env, obj, c); 1300 return CHECK_JNI_EXIT("b", baseEnv(env)->IsInstanceOf(env, obj, c)); 1301 } 1302 1303 static jmethodID GetMethodID(JNIEnv* env, jclass c, const char* name, const char* sig) { 1304 CHECK_JNI_ENTRY(kFlag_Default, "Ecuu", env, c, name, sig); 1305 return CHECK_JNI_EXIT("m", baseEnv(env)->GetMethodID(env, c, name, sig)); 1306 } 1307 1308 static jfieldID GetFieldID(JNIEnv* env, jclass c, const char* name, const char* sig) { 1309 CHECK_JNI_ENTRY(kFlag_Default, "Ecuu", env, c, name, sig); 1310 return CHECK_JNI_EXIT("f", baseEnv(env)->GetFieldID(env, c, name, sig)); 1311 } 1312 1313 static jmethodID GetStaticMethodID(JNIEnv* env, jclass c, const char* name, const char* sig) { 1314 CHECK_JNI_ENTRY(kFlag_Default, "Ecuu", env, c, name, sig); 1315 return CHECK_JNI_EXIT("m", baseEnv(env)->GetStaticMethodID(env, c, name, sig)); 1316 } 1317 1318 static jfieldID GetStaticFieldID(JNIEnv* env, jclass c, const char* name, const char* sig) { 1319 CHECK_JNI_ENTRY(kFlag_Default, "Ecuu", env, c, name, sig); 1320 return CHECK_JNI_EXIT("f", baseEnv(env)->GetStaticFieldID(env, c, name, sig)); 1321 } 1322 1323 #define FIELD_ACCESSORS(_ctype, _jname, _jvalue_type, _type) \ 1324 static _ctype GetStatic##_jname##Field(JNIEnv* env, jclass c, jfieldID fid) { \ 1325 CHECK_JNI_ENTRY(kFlag_Default, "Ecf", env, c, fid); \ 1326 sc.CheckStaticFieldID(c, fid); \ 1327 return CHECK_JNI_EXIT(_type, baseEnv(env)->GetStatic##_jname##Field(env, c, fid)); \ 1328 } \ 1329 static _ctype Get##_jname##Field(JNIEnv* env, jobject obj, jfieldID fid) { \ 1330 CHECK_JNI_ENTRY(kFlag_Default, "ELf", env, obj, fid); \ 1331 sc.CheckInstanceFieldID(obj, fid); \ 1332 return CHECK_JNI_EXIT(_type, baseEnv(env)->Get##_jname##Field(env, obj, fid)); \ 1333 } \ 1334 static void SetStatic##_jname##Field(JNIEnv* env, jclass c, jfieldID fid, _ctype value) { \ 1335 CHECK_JNI_ENTRY(kFlag_Default, "Ecf" _type, env, c, fid, value); \ 1336 sc.CheckStaticFieldID(c, fid); \ 1337 /* "value" arg only used when type == ref */ \ 1338 jvalue java_type_value; \ 1339 java_type_value._jvalue_type = value; \ 1340 sc.CheckFieldType(java_type_value, fid, _type[0], true); \ 1341 baseEnv(env)->SetStatic##_jname##Field(env, c, fid, value); \ 1342 CHECK_JNI_EXIT_VOID(); \ 1343 } \ 1344 static void Set##_jname##Field(JNIEnv* env, jobject obj, jfieldID fid, _ctype value) { \ 1345 CHECK_JNI_ENTRY(kFlag_Default, "ELf" _type, env, obj, fid, value); \ 1346 sc.CheckInstanceFieldID(obj, fid); \ 1347 /* "value" arg only used when type == ref */ \ 1348 jvalue java_type_value; \ 1349 java_type_value._jvalue_type = value; \ 1350 sc.CheckFieldType(java_type_value, fid, _type[0], false); \ 1351 baseEnv(env)->Set##_jname##Field(env, obj, fid, value); \ 1352 CHECK_JNI_EXIT_VOID(); \ 1353 } 1354 1355 FIELD_ACCESSORS(jobject, Object, l, "L"); 1356 FIELD_ACCESSORS(jboolean, Boolean, z, "Z"); 1357 FIELD_ACCESSORS(jbyte, Byte, b, "B"); 1358 FIELD_ACCESSORS(jchar, Char, c, "C"); 1359 FIELD_ACCESSORS(jshort, Short, s, "S"); 1360 FIELD_ACCESSORS(jint, Int, i, "I"); 1361 FIELD_ACCESSORS(jlong, Long, j, "J"); 1362 FIELD_ACCESSORS(jfloat, Float, f, "F"); 1363 FIELD_ACCESSORS(jdouble, Double, d, "D"); 1364 1365 #define CALL(_ctype, _jname, _retdecl, _retasgn, _retok, _retsig) \ 1366 /* Virtual... */ \ 1367 static _ctype Call##_jname##Method(JNIEnv* env, jobject obj, \ 1368 jmethodID mid, ...) \ 1369 { \ 1370 CHECK_JNI_ENTRY(kFlag_Default, "ELm.", env, obj, mid); /* TODO: args! */ \ 1371 sc.CheckSig(mid, _retsig, false); \ 1372 sc.CheckVirtualMethod(obj, mid); \ 1373 _retdecl; \ 1374 va_list args; \ 1375 va_start(args, mid); \ 1376 _retasgn(baseEnv(env)->Call##_jname##MethodV(env, obj, mid, args)); \ 1377 va_end(args); \ 1378 _retok; \ 1379 } \ 1380 static _ctype Call##_jname##MethodV(JNIEnv* env, jobject obj, \ 1381 jmethodID mid, va_list args) \ 1382 { \ 1383 CHECK_JNI_ENTRY(kFlag_Default, "ELm.", env, obj, mid); /* TODO: args! */ \ 1384 sc.CheckSig(mid, _retsig, false); \ 1385 sc.CheckVirtualMethod(obj, mid); \ 1386 _retdecl; \ 1387 _retasgn(baseEnv(env)->Call##_jname##MethodV(env, obj, mid, args)); \ 1388 _retok; \ 1389 } \ 1390 static _ctype Call##_jname##MethodA(JNIEnv* env, jobject obj, \ 1391 jmethodID mid, jvalue* args) \ 1392 { \ 1393 CHECK_JNI_ENTRY(kFlag_Default, "ELm.", env, obj, mid); /* TODO: args! */ \ 1394 sc.CheckSig(mid, _retsig, false); \ 1395 sc.CheckVirtualMethod(obj, mid); \ 1396 _retdecl; \ 1397 _retasgn(baseEnv(env)->Call##_jname##MethodA(env, obj, mid, args)); \ 1398 _retok; \ 1399 } \ 1400 /* Non-virtual... */ \ 1401 static _ctype CallNonvirtual##_jname##Method(JNIEnv* env, \ 1402 jobject obj, jclass c, jmethodID mid, ...) \ 1403 { \ 1404 CHECK_JNI_ENTRY(kFlag_Default, "ELcm.", env, obj, c, mid); /* TODO: args! */ \ 1405 sc.CheckSig(mid, _retsig, false); \ 1406 sc.CheckVirtualMethod(obj, mid); \ 1407 _retdecl; \ 1408 va_list args; \ 1409 va_start(args, mid); \ 1410 _retasgn(baseEnv(env)->CallNonvirtual##_jname##MethodV(env, obj, c, mid, args)); \ 1411 va_end(args); \ 1412 _retok; \ 1413 } \ 1414 static _ctype CallNonvirtual##_jname##MethodV(JNIEnv* env, \ 1415 jobject obj, jclass c, jmethodID mid, va_list args) \ 1416 { \ 1417 CHECK_JNI_ENTRY(kFlag_Default, "ELcm.", env, obj, c, mid); /* TODO: args! */ \ 1418 sc.CheckSig(mid, _retsig, false); \ 1419 sc.CheckVirtualMethod(obj, mid); \ 1420 _retdecl; \ 1421 _retasgn(baseEnv(env)->CallNonvirtual##_jname##MethodV(env, obj, c, mid, args)); \ 1422 _retok; \ 1423 } \ 1424 static _ctype CallNonvirtual##_jname##MethodA(JNIEnv* env, \ 1425 jobject obj, jclass c, jmethodID mid, jvalue* args) \ 1426 { \ 1427 CHECK_JNI_ENTRY(kFlag_Default, "ELcm.", env, obj, c, mid); /* TODO: args! */ \ 1428 sc.CheckSig(mid, _retsig, false); \ 1429 sc.CheckVirtualMethod(obj, mid); \ 1430 _retdecl; \ 1431 _retasgn(baseEnv(env)->CallNonvirtual##_jname##MethodA(env, obj, c, mid, args)); \ 1432 _retok; \ 1433 } \ 1434 /* Static... */ \ 1435 static _ctype CallStatic##_jname##Method(JNIEnv* env, jclass c, jmethodID mid, ...) \ 1436 { \ 1437 CHECK_JNI_ENTRY(kFlag_Default, "Ecm.", env, c, mid); /* TODO: args! */ \ 1438 sc.CheckSig(mid, _retsig, true); \ 1439 sc.CheckStaticMethod(c, mid); \ 1440 _retdecl; \ 1441 va_list args; \ 1442 va_start(args, mid); \ 1443 _retasgn(baseEnv(env)->CallStatic##_jname##MethodV(env, c, mid, args)); \ 1444 va_end(args); \ 1445 _retok; \ 1446 } \ 1447 static _ctype CallStatic##_jname##MethodV(JNIEnv* env, jclass c, jmethodID mid, va_list args) \ 1448 { \ 1449 CHECK_JNI_ENTRY(kFlag_Default, "Ecm.", env, c, mid); /* TODO: args! */ \ 1450 sc.CheckSig(mid, _retsig, true); \ 1451 sc.CheckStaticMethod(c, mid); \ 1452 _retdecl; \ 1453 _retasgn(baseEnv(env)->CallStatic##_jname##MethodV(env, c, mid, args)); \ 1454 _retok; \ 1455 } \ 1456 static _ctype CallStatic##_jname##MethodA(JNIEnv* env, jclass c, jmethodID mid, jvalue* args) \ 1457 { \ 1458 CHECK_JNI_ENTRY(kFlag_Default, "Ecm.", env, c, mid); /* TODO: args! */ \ 1459 sc.CheckSig(mid, _retsig, true); \ 1460 sc.CheckStaticMethod(c, mid); \ 1461 _retdecl; \ 1462 _retasgn(baseEnv(env)->CallStatic##_jname##MethodA(env, c, mid, args)); \ 1463 _retok; \ 1464 } 1465 1466 #define NON_VOID_RETURN(_retsig, _ctype) return CHECK_JNI_EXIT(_retsig, (_ctype) result) 1467 #define VOID_RETURN CHECK_JNI_EXIT_VOID() 1468 1469 CALL(jobject, Object, mirror::Object* result, result = reinterpret_cast<mirror::Object*>, NON_VOID_RETURN("L", jobject), "L"); 1470 CALL(jboolean, Boolean, jboolean result, result =, NON_VOID_RETURN("Z", jboolean), "Z"); 1471 CALL(jbyte, Byte, jbyte result, result =, NON_VOID_RETURN("B", jbyte), "B"); 1472 CALL(jchar, Char, jchar result, result =, NON_VOID_RETURN("C", jchar), "C"); 1473 CALL(jshort, Short, jshort result, result =, NON_VOID_RETURN("S", jshort), "S"); 1474 CALL(jint, Int, jint result, result =, NON_VOID_RETURN("I", jint), "I"); 1475 CALL(jlong, Long, jlong result, result =, NON_VOID_RETURN("J", jlong), "J"); 1476 CALL(jfloat, Float, jfloat result, result =, NON_VOID_RETURN("F", jfloat), "F"); 1477 CALL(jdouble, Double, jdouble result, result =, NON_VOID_RETURN("D", jdouble), "D"); 1478 CALL(void, Void, , , VOID_RETURN, "V"); 1479 1480 static jstring NewString(JNIEnv* env, const jchar* unicodeChars, jsize len) { 1481 CHECK_JNI_ENTRY(kFlag_Default, "Epz", env, unicodeChars, len); 1482 return CHECK_JNI_EXIT("s", baseEnv(env)->NewString(env, unicodeChars, len)); 1483 } 1484 1485 static jsize GetStringLength(JNIEnv* env, jstring string) { 1486 CHECK_JNI_ENTRY(kFlag_CritOkay, "Es", env, string); 1487 return CHECK_JNI_EXIT("I", baseEnv(env)->GetStringLength(env, string)); 1488 } 1489 1490 static const jchar* GetStringChars(JNIEnv* env, jstring java_string, jboolean* isCopy) { 1491 CHECK_JNI_ENTRY(kFlag_CritOkay, "Esp", env, java_string, isCopy); 1492 const jchar* result = baseEnv(env)->GetStringChars(env, java_string, isCopy); 1493 if (sc.ForceCopy() && result != nullptr) { 1494 mirror::String* s = sc.soa().Decode<mirror::String*>(java_string); 1495 int byteCount = s->GetLength() * 2; 1496 result = (const jchar*) GuardedCopy::Create(result, byteCount, false); 1497 if (isCopy != nullptr) { 1498 *isCopy = JNI_TRUE; 1499 } 1500 } 1501 return CHECK_JNI_EXIT("p", result); 1502 } 1503 1504 static void ReleaseStringChars(JNIEnv* env, jstring string, const jchar* chars) { 1505 CHECK_JNI_ENTRY(kFlag_Default | kFlag_ExcepOkay, "Esp", env, string, chars); 1506 sc.CheckNonNull(chars); 1507 if (sc.ForceCopy()) { 1508 GuardedCopy::Check(__FUNCTION__, chars, false); 1509 chars = reinterpret_cast<const jchar*>(GuardedCopy::Destroy(const_cast<jchar*>(chars))); 1510 } 1511 baseEnv(env)->ReleaseStringChars(env, string, chars); 1512 CHECK_JNI_EXIT_VOID(); 1513 } 1514 1515 static jstring NewStringUTF(JNIEnv* env, const char* bytes) { 1516 CHECK_JNI_ENTRY(kFlag_NullableUtf, "Eu", env, bytes); // TODO: show pointer and truncate string. 1517 return CHECK_JNI_EXIT("s", baseEnv(env)->NewStringUTF(env, bytes)); 1518 } 1519 1520 static jsize GetStringUTFLength(JNIEnv* env, jstring string) { 1521 CHECK_JNI_ENTRY(kFlag_CritOkay, "Es", env, string); 1522 return CHECK_JNI_EXIT("I", baseEnv(env)->GetStringUTFLength(env, string)); 1523 } 1524 1525 static const char* GetStringUTFChars(JNIEnv* env, jstring string, jboolean* isCopy) { 1526 CHECK_JNI_ENTRY(kFlag_CritOkay, "Esp", env, string, isCopy); 1527 const char* result = baseEnv(env)->GetStringUTFChars(env, string, isCopy); 1528 if (sc.ForceCopy() && result != nullptr) { 1529 result = (const char*) GuardedCopy::Create(result, strlen(result) + 1, false); 1530 if (isCopy != nullptr) { 1531 *isCopy = JNI_TRUE; 1532 } 1533 } 1534 return CHECK_JNI_EXIT("u", result); // TODO: show pointer and truncate string. 1535 } 1536 1537 static void ReleaseStringUTFChars(JNIEnv* env, jstring string, const char* utf) { 1538 CHECK_JNI_ENTRY(kFlag_ExcepOkay | kFlag_Release, "Esu", env, string, utf); // TODO: show pointer and truncate string. 1539 if (sc.ForceCopy()) { 1540 GuardedCopy::Check(__FUNCTION__, utf, false); 1541 utf = reinterpret_cast<const char*>(GuardedCopy::Destroy(const_cast<char*>(utf))); 1542 } 1543 baseEnv(env)->ReleaseStringUTFChars(env, string, utf); 1544 CHECK_JNI_EXIT_VOID(); 1545 } 1546 1547 static jsize GetArrayLength(JNIEnv* env, jarray array) { 1548 CHECK_JNI_ENTRY(kFlag_CritOkay, "Ea", env, array); 1549 return CHECK_JNI_EXIT("I", baseEnv(env)->GetArrayLength(env, array)); 1550 } 1551 1552 static jobjectArray NewObjectArray(JNIEnv* env, jsize length, jclass elementClass, jobject initialElement) { 1553 CHECK_JNI_ENTRY(kFlag_Default, "EzcL", env, length, elementClass, initialElement); 1554 return CHECK_JNI_EXIT("a", baseEnv(env)->NewObjectArray(env, length, elementClass, initialElement)); 1555 } 1556 1557 static jobject GetObjectArrayElement(JNIEnv* env, jobjectArray array, jsize index) { 1558 CHECK_JNI_ENTRY(kFlag_Default, "EaI", env, array, index); 1559 return CHECK_JNI_EXIT("L", baseEnv(env)->GetObjectArrayElement(env, array, index)); 1560 } 1561 1562 static void SetObjectArrayElement(JNIEnv* env, jobjectArray array, jsize index, jobject value) { 1563 CHECK_JNI_ENTRY(kFlag_Default, "EaIL", env, array, index, value); 1564 baseEnv(env)->SetObjectArrayElement(env, array, index, value); 1565 CHECK_JNI_EXIT_VOID(); 1566 } 1567 1568 #define NEW_PRIMITIVE_ARRAY(_artype, _jname) \ 1569 static _artype New##_jname##Array(JNIEnv* env, jsize length) { \ 1570 CHECK_JNI_ENTRY(kFlag_Default, "Ez", env, length); \ 1571 return CHECK_JNI_EXIT("a", baseEnv(env)->New##_jname##Array(env, length)); \ 1572 } 1573 NEW_PRIMITIVE_ARRAY(jbooleanArray, Boolean); 1574 NEW_PRIMITIVE_ARRAY(jbyteArray, Byte); 1575 NEW_PRIMITIVE_ARRAY(jcharArray, Char); 1576 NEW_PRIMITIVE_ARRAY(jshortArray, Short); 1577 NEW_PRIMITIVE_ARRAY(jintArray, Int); 1578 NEW_PRIMITIVE_ARRAY(jlongArray, Long); 1579 NEW_PRIMITIVE_ARRAY(jfloatArray, Float); 1580 NEW_PRIMITIVE_ARRAY(jdoubleArray, Double); 1581 1582 struct ForceCopyGetChecker { 1583 public: 1584 ForceCopyGetChecker(ScopedCheck& sc, jboolean* isCopy) { 1585 force_copy = sc.ForceCopy(); 1586 no_copy = 0; 1587 if (force_copy && isCopy != nullptr) { 1588 // Capture this before the base call tramples on it. 1589 no_copy = *reinterpret_cast<uint32_t*>(isCopy); 1590 } 1591 } 1592 1593 template<typename ResultT> 1594 ResultT Check(JNIEnv* env, jarray array, jboolean* isCopy, ResultT result) { 1595 if (force_copy && result != nullptr) { 1596 result = reinterpret_cast<ResultT>(CreateGuardedPACopy(env, array, isCopy)); 1597 } 1598 return result; 1599 } 1600 1601 uint32_t no_copy; 1602 bool force_copy; 1603 }; 1604 1605 #define GET_PRIMITIVE_ARRAY_ELEMENTS(_ctype, _jname) \ 1606 static _ctype* Get##_jname##ArrayElements(JNIEnv* env, _ctype##Array array, jboolean* isCopy) { \ 1607 CHECK_JNI_ENTRY(kFlag_Default, "Eap", env, array, isCopy); \ 1608 _ctype* result = ForceCopyGetChecker(sc, isCopy).Check(env, array, isCopy, baseEnv(env)->Get##_jname##ArrayElements(env, array, isCopy)); \ 1609 return CHECK_JNI_EXIT("p", result); \ 1610 } 1611 1612 #define RELEASE_PRIMITIVE_ARRAY_ELEMENTS(_ctype, _jname) \ 1613 static void Release##_jname##ArrayElements(JNIEnv* env, _ctype##Array array, _ctype* elems, jint mode) { \ 1614 CHECK_JNI_ENTRY(kFlag_Default | kFlag_ExcepOkay, "Eapr", env, array, elems, mode); \ 1615 sc.CheckNonNull(elems); \ 1616 if (sc.ForceCopy()) { \ 1617 ReleaseGuardedPACopy(env, array, elems, mode); \ 1618 } \ 1619 baseEnv(env)->Release##_jname##ArrayElements(env, array, elems, mode); \ 1620 CHECK_JNI_EXIT_VOID(); \ 1621 } 1622 1623 #define GET_PRIMITIVE_ARRAY_REGION(_ctype, _jname) \ 1624 static void Get##_jname##ArrayRegion(JNIEnv* env, _ctype##Array array, jsize start, jsize len, _ctype* buf) { \ 1625 CHECK_JNI_ENTRY(kFlag_Default, "EaIIp", env, array, start, len, buf); \ 1626 baseEnv(env)->Get##_jname##ArrayRegion(env, array, start, len, buf); \ 1627 CHECK_JNI_EXIT_VOID(); \ 1628 } 1629 1630 #define SET_PRIMITIVE_ARRAY_REGION(_ctype, _jname) \ 1631 static void Set##_jname##ArrayRegion(JNIEnv* env, _ctype##Array array, jsize start, jsize len, const _ctype* buf) { \ 1632 CHECK_JNI_ENTRY(kFlag_Default, "EaIIp", env, array, start, len, buf); \ 1633 baseEnv(env)->Set##_jname##ArrayRegion(env, array, start, len, buf); \ 1634 CHECK_JNI_EXIT_VOID(); \ 1635 } 1636 1637 #define PRIMITIVE_ARRAY_FUNCTIONS(_ctype, _jname, _typechar) \ 1638 GET_PRIMITIVE_ARRAY_ELEMENTS(_ctype, _jname); \ 1639 RELEASE_PRIMITIVE_ARRAY_ELEMENTS(_ctype, _jname); \ 1640 GET_PRIMITIVE_ARRAY_REGION(_ctype, _jname); \ 1641 SET_PRIMITIVE_ARRAY_REGION(_ctype, _jname); 1642 1643 // TODO: verify primitive array type matches call type. 1644 PRIMITIVE_ARRAY_FUNCTIONS(jboolean, Boolean, 'Z'); 1645 PRIMITIVE_ARRAY_FUNCTIONS(jbyte, Byte, 'B'); 1646 PRIMITIVE_ARRAY_FUNCTIONS(jchar, Char, 'C'); 1647 PRIMITIVE_ARRAY_FUNCTIONS(jshort, Short, 'S'); 1648 PRIMITIVE_ARRAY_FUNCTIONS(jint, Int, 'I'); 1649 PRIMITIVE_ARRAY_FUNCTIONS(jlong, Long, 'J'); 1650 PRIMITIVE_ARRAY_FUNCTIONS(jfloat, Float, 'F'); 1651 PRIMITIVE_ARRAY_FUNCTIONS(jdouble, Double, 'D'); 1652 1653 static jint RegisterNatives(JNIEnv* env, jclass c, const JNINativeMethod* methods, jint nMethods) { 1654 CHECK_JNI_ENTRY(kFlag_Default, "EcpI", env, c, methods, nMethods); 1655 return CHECK_JNI_EXIT("I", baseEnv(env)->RegisterNatives(env, c, methods, nMethods)); 1656 } 1657 1658 static jint UnregisterNatives(JNIEnv* env, jclass c) { 1659 CHECK_JNI_ENTRY(kFlag_Default, "Ec", env, c); 1660 return CHECK_JNI_EXIT("I", baseEnv(env)->UnregisterNatives(env, c)); 1661 } 1662 1663 static jint MonitorEnter(JNIEnv* env, jobject obj) { 1664 CHECK_JNI_ENTRY(kFlag_Default, "EL", env, obj); 1665 if (!sc.CheckInstance(ScopedCheck::kObject, obj)) { 1666 return JNI_ERR; // Only for jni_internal_test. Real code will have aborted already. 1667 } 1668 return CHECK_JNI_EXIT("I", baseEnv(env)->MonitorEnter(env, obj)); 1669 } 1670 1671 static jint MonitorExit(JNIEnv* env, jobject obj) { 1672 CHECK_JNI_ENTRY(kFlag_Default | kFlag_ExcepOkay, "EL", env, obj); 1673 if (!sc.CheckInstance(ScopedCheck::kObject, obj)) { 1674 return JNI_ERR; // Only for jni_internal_test. Real code will have aborted already. 1675 } 1676 return CHECK_JNI_EXIT("I", baseEnv(env)->MonitorExit(env, obj)); 1677 } 1678 1679 static jint GetJavaVM(JNIEnv *env, JavaVM **vm) { 1680 CHECK_JNI_ENTRY(kFlag_Default, "Ep", env, vm); 1681 return CHECK_JNI_EXIT("I", baseEnv(env)->GetJavaVM(env, vm)); 1682 } 1683 1684 static void GetStringRegion(JNIEnv* env, jstring str, jsize start, jsize len, jchar* buf) { 1685 CHECK_JNI_ENTRY(kFlag_CritOkay, "EsIIp", env, str, start, len, buf); 1686 baseEnv(env)->GetStringRegion(env, str, start, len, buf); 1687 CHECK_JNI_EXIT_VOID(); 1688 } 1689 1690 static void GetStringUTFRegion(JNIEnv* env, jstring str, jsize start, jsize len, char* buf) { 1691 CHECK_JNI_ENTRY(kFlag_CritOkay, "EsIIp", env, str, start, len, buf); 1692 baseEnv(env)->GetStringUTFRegion(env, str, start, len, buf); 1693 CHECK_JNI_EXIT_VOID(); 1694 } 1695 1696 static void* GetPrimitiveArrayCritical(JNIEnv* env, jarray array, jboolean* isCopy) { 1697 CHECK_JNI_ENTRY(kFlag_CritGet, "Eap", env, array, isCopy); 1698 void* result = baseEnv(env)->GetPrimitiveArrayCritical(env, array, isCopy); 1699 if (sc.ForceCopy() && result != nullptr) { 1700 result = CreateGuardedPACopy(env, array, isCopy); 1701 } 1702 return CHECK_JNI_EXIT("p", result); 1703 } 1704 1705 static void ReleasePrimitiveArrayCritical(JNIEnv* env, jarray array, void* carray, jint mode) { 1706 CHECK_JNI_ENTRY(kFlag_CritRelease | kFlag_ExcepOkay, "Eapr", env, array, carray, mode); 1707 sc.CheckNonNull(carray); 1708 if (sc.ForceCopy()) { 1709 ReleaseGuardedPACopy(env, array, carray, mode); 1710 } 1711 baseEnv(env)->ReleasePrimitiveArrayCritical(env, array, carray, mode); 1712 CHECK_JNI_EXIT_VOID(); 1713 } 1714 1715 static const jchar* GetStringCritical(JNIEnv* env, jstring java_string, jboolean* isCopy) { 1716 CHECK_JNI_ENTRY(kFlag_CritGet, "Esp", env, java_string, isCopy); 1717 const jchar* result = baseEnv(env)->GetStringCritical(env, java_string, isCopy); 1718 if (sc.ForceCopy() && result != nullptr) { 1719 mirror::String* s = sc.soa().Decode<mirror::String*>(java_string); 1720 int byteCount = s->GetLength() * 2; 1721 result = (const jchar*) GuardedCopy::Create(result, byteCount, false); 1722 if (isCopy != nullptr) { 1723 *isCopy = JNI_TRUE; 1724 } 1725 } 1726 return CHECK_JNI_EXIT("p", result); 1727 } 1728 1729 static void ReleaseStringCritical(JNIEnv* env, jstring string, const jchar* carray) { 1730 CHECK_JNI_ENTRY(kFlag_CritRelease | kFlag_ExcepOkay, "Esp", env, string, carray); 1731 sc.CheckNonNull(carray); 1732 if (sc.ForceCopy()) { 1733 GuardedCopy::Check(__FUNCTION__, carray, false); 1734 carray = reinterpret_cast<const jchar*>(GuardedCopy::Destroy(const_cast<jchar*>(carray))); 1735 } 1736 baseEnv(env)->ReleaseStringCritical(env, string, carray); 1737 CHECK_JNI_EXIT_VOID(); 1738 } 1739 1740 static jweak NewWeakGlobalRef(JNIEnv* env, jobject obj) { 1741 CHECK_JNI_ENTRY(kFlag_Default, "EL", env, obj); 1742 return CHECK_JNI_EXIT("L", baseEnv(env)->NewWeakGlobalRef(env, obj)); 1743 } 1744 1745 static jboolean ExceptionCheck(JNIEnv* env) { 1746 CHECK_JNI_ENTRY(kFlag_CritOkay | kFlag_ExcepOkay, "E", env); 1747 return CHECK_JNI_EXIT("b", baseEnv(env)->ExceptionCheck(env)); 1748 } 1749 1750 static jobjectRefType GetObjectRefType(JNIEnv* env, jobject obj) { 1751 // Note: we use "Ep" rather than "EL" because this is the one JNI function 1752 // that it's okay to pass an invalid reference to. 1753 CHECK_JNI_ENTRY(kFlag_Default, "Ep", env, obj); 1754 // TODO: proper decoding of jobjectRefType! 1755 return CHECK_JNI_EXIT("I", baseEnv(env)->GetObjectRefType(env, obj)); 1756 } 1757 1758 static jobject NewDirectByteBuffer(JNIEnv* env, void* address, jlong capacity) { 1759 CHECK_JNI_ENTRY(kFlag_Default, "EpJ", env, address, capacity); 1760 if (address == nullptr) { 1761 JniAbortF(__FUNCTION__, "non-nullable address is NULL"); 1762 return nullptr; 1763 } 1764 return CHECK_JNI_EXIT("L", baseEnv(env)->NewDirectByteBuffer(env, address, capacity)); 1765 } 1766 1767 static void* GetDirectBufferAddress(JNIEnv* env, jobject buf) { 1768 CHECK_JNI_ENTRY(kFlag_Default, "EL", env, buf); 1769 // TODO: check that 'buf' is a java.nio.Buffer. 1770 return CHECK_JNI_EXIT("p", baseEnv(env)->GetDirectBufferAddress(env, buf)); 1771 } 1772 1773 static jlong GetDirectBufferCapacity(JNIEnv* env, jobject buf) { 1774 CHECK_JNI_ENTRY(kFlag_Default, "EL", env, buf); 1775 // TODO: check that 'buf' is a java.nio.Buffer. 1776 return CHECK_JNI_EXIT("J", baseEnv(env)->GetDirectBufferCapacity(env, buf)); 1777 } 1778 1779 private: 1780 static inline const JNINativeInterface* baseEnv(JNIEnv* env) { 1781 return reinterpret_cast<JNIEnvExt*>(env)->unchecked_functions; 1782 } 1783 }; 1784 1785 const JNINativeInterface gCheckNativeInterface = { 1786 nullptr, // reserved0. 1787 nullptr, // reserved1. 1788 nullptr, // reserved2. 1789 nullptr, // reserved3. 1790 CheckJNI::GetVersion, 1791 CheckJNI::DefineClass, 1792 CheckJNI::FindClass, 1793 CheckJNI::FromReflectedMethod, 1794 CheckJNI::FromReflectedField, 1795 CheckJNI::ToReflectedMethod, 1796 CheckJNI::GetSuperclass, 1797 CheckJNI::IsAssignableFrom, 1798 CheckJNI::ToReflectedField, 1799 CheckJNI::Throw, 1800 CheckJNI::ThrowNew, 1801 CheckJNI::ExceptionOccurred, 1802 CheckJNI::ExceptionDescribe, 1803 CheckJNI::ExceptionClear, 1804 CheckJNI::FatalError, 1805 CheckJNI::PushLocalFrame, 1806 CheckJNI::PopLocalFrame, 1807 CheckJNI::NewGlobalRef, 1808 CheckJNI::DeleteGlobalRef, 1809 CheckJNI::DeleteLocalRef, 1810 CheckJNI::IsSameObject, 1811 CheckJNI::NewLocalRef, 1812 CheckJNI::EnsureLocalCapacity, 1813 CheckJNI::AllocObject, 1814 CheckJNI::NewObject, 1815 CheckJNI::NewObjectV, 1816 CheckJNI::NewObjectA, 1817 CheckJNI::GetObjectClass, 1818 CheckJNI::IsInstanceOf, 1819 CheckJNI::GetMethodID, 1820 CheckJNI::CallObjectMethod, 1821 CheckJNI::CallObjectMethodV, 1822 CheckJNI::CallObjectMethodA, 1823 CheckJNI::CallBooleanMethod, 1824 CheckJNI::CallBooleanMethodV, 1825 CheckJNI::CallBooleanMethodA, 1826 CheckJNI::CallByteMethod, 1827 CheckJNI::CallByteMethodV, 1828 CheckJNI::CallByteMethodA, 1829 CheckJNI::CallCharMethod, 1830 CheckJNI::CallCharMethodV, 1831 CheckJNI::CallCharMethodA, 1832 CheckJNI::CallShortMethod, 1833 CheckJNI::CallShortMethodV, 1834 CheckJNI::CallShortMethodA, 1835 CheckJNI::CallIntMethod, 1836 CheckJNI::CallIntMethodV, 1837 CheckJNI::CallIntMethodA, 1838 CheckJNI::CallLongMethod, 1839 CheckJNI::CallLongMethodV, 1840 CheckJNI::CallLongMethodA, 1841 CheckJNI::CallFloatMethod, 1842 CheckJNI::CallFloatMethodV, 1843 CheckJNI::CallFloatMethodA, 1844 CheckJNI::CallDoubleMethod, 1845 CheckJNI::CallDoubleMethodV, 1846 CheckJNI::CallDoubleMethodA, 1847 CheckJNI::CallVoidMethod, 1848 CheckJNI::CallVoidMethodV, 1849 CheckJNI::CallVoidMethodA, 1850 CheckJNI::CallNonvirtualObjectMethod, 1851 CheckJNI::CallNonvirtualObjectMethodV, 1852 CheckJNI::CallNonvirtualObjectMethodA, 1853 CheckJNI::CallNonvirtualBooleanMethod, 1854 CheckJNI::CallNonvirtualBooleanMethodV, 1855 CheckJNI::CallNonvirtualBooleanMethodA, 1856 CheckJNI::CallNonvirtualByteMethod, 1857 CheckJNI::CallNonvirtualByteMethodV, 1858 CheckJNI::CallNonvirtualByteMethodA, 1859 CheckJNI::CallNonvirtualCharMethod, 1860 CheckJNI::CallNonvirtualCharMethodV, 1861 CheckJNI::CallNonvirtualCharMethodA, 1862 CheckJNI::CallNonvirtualShortMethod, 1863 CheckJNI::CallNonvirtualShortMethodV, 1864 CheckJNI::CallNonvirtualShortMethodA, 1865 CheckJNI::CallNonvirtualIntMethod, 1866 CheckJNI::CallNonvirtualIntMethodV, 1867 CheckJNI::CallNonvirtualIntMethodA, 1868 CheckJNI::CallNonvirtualLongMethod, 1869 CheckJNI::CallNonvirtualLongMethodV, 1870 CheckJNI::CallNonvirtualLongMethodA, 1871 CheckJNI::CallNonvirtualFloatMethod, 1872 CheckJNI::CallNonvirtualFloatMethodV, 1873 CheckJNI::CallNonvirtualFloatMethodA, 1874 CheckJNI::CallNonvirtualDoubleMethod, 1875 CheckJNI::CallNonvirtualDoubleMethodV, 1876 CheckJNI::CallNonvirtualDoubleMethodA, 1877 CheckJNI::CallNonvirtualVoidMethod, 1878 CheckJNI::CallNonvirtualVoidMethodV, 1879 CheckJNI::CallNonvirtualVoidMethodA, 1880 CheckJNI::GetFieldID, 1881 CheckJNI::GetObjectField, 1882 CheckJNI::GetBooleanField, 1883 CheckJNI::GetByteField, 1884 CheckJNI::GetCharField, 1885 CheckJNI::GetShortField, 1886 CheckJNI::GetIntField, 1887 CheckJNI::GetLongField, 1888 CheckJNI::GetFloatField, 1889 CheckJNI::GetDoubleField, 1890 CheckJNI::SetObjectField, 1891 CheckJNI::SetBooleanField, 1892 CheckJNI::SetByteField, 1893 CheckJNI::SetCharField, 1894 CheckJNI::SetShortField, 1895 CheckJNI::SetIntField, 1896 CheckJNI::SetLongField, 1897 CheckJNI::SetFloatField, 1898 CheckJNI::SetDoubleField, 1899 CheckJNI::GetStaticMethodID, 1900 CheckJNI::CallStaticObjectMethod, 1901 CheckJNI::CallStaticObjectMethodV, 1902 CheckJNI::CallStaticObjectMethodA, 1903 CheckJNI::CallStaticBooleanMethod, 1904 CheckJNI::CallStaticBooleanMethodV, 1905 CheckJNI::CallStaticBooleanMethodA, 1906 CheckJNI::CallStaticByteMethod, 1907 CheckJNI::CallStaticByteMethodV, 1908 CheckJNI::CallStaticByteMethodA, 1909 CheckJNI::CallStaticCharMethod, 1910 CheckJNI::CallStaticCharMethodV, 1911 CheckJNI::CallStaticCharMethodA, 1912 CheckJNI::CallStaticShortMethod, 1913 CheckJNI::CallStaticShortMethodV, 1914 CheckJNI::CallStaticShortMethodA, 1915 CheckJNI::CallStaticIntMethod, 1916 CheckJNI::CallStaticIntMethodV, 1917 CheckJNI::CallStaticIntMethodA, 1918 CheckJNI::CallStaticLongMethod, 1919 CheckJNI::CallStaticLongMethodV, 1920 CheckJNI::CallStaticLongMethodA, 1921 CheckJNI::CallStaticFloatMethod, 1922 CheckJNI::CallStaticFloatMethodV, 1923 CheckJNI::CallStaticFloatMethodA, 1924 CheckJNI::CallStaticDoubleMethod, 1925 CheckJNI::CallStaticDoubleMethodV, 1926 CheckJNI::CallStaticDoubleMethodA, 1927 CheckJNI::CallStaticVoidMethod, 1928 CheckJNI::CallStaticVoidMethodV, 1929 CheckJNI::CallStaticVoidMethodA, 1930 CheckJNI::GetStaticFieldID, 1931 CheckJNI::GetStaticObjectField, 1932 CheckJNI::GetStaticBooleanField, 1933 CheckJNI::GetStaticByteField, 1934 CheckJNI::GetStaticCharField, 1935 CheckJNI::GetStaticShortField, 1936 CheckJNI::GetStaticIntField, 1937 CheckJNI::GetStaticLongField, 1938 CheckJNI::GetStaticFloatField, 1939 CheckJNI::GetStaticDoubleField, 1940 CheckJNI::SetStaticObjectField, 1941 CheckJNI::SetStaticBooleanField, 1942 CheckJNI::SetStaticByteField, 1943 CheckJNI::SetStaticCharField, 1944 CheckJNI::SetStaticShortField, 1945 CheckJNI::SetStaticIntField, 1946 CheckJNI::SetStaticLongField, 1947 CheckJNI::SetStaticFloatField, 1948 CheckJNI::SetStaticDoubleField, 1949 CheckJNI::NewString, 1950 CheckJNI::GetStringLength, 1951 CheckJNI::GetStringChars, 1952 CheckJNI::ReleaseStringChars, 1953 CheckJNI::NewStringUTF, 1954 CheckJNI::GetStringUTFLength, 1955 CheckJNI::GetStringUTFChars, 1956 CheckJNI::ReleaseStringUTFChars, 1957 CheckJNI::GetArrayLength, 1958 CheckJNI::NewObjectArray, 1959 CheckJNI::GetObjectArrayElement, 1960 CheckJNI::SetObjectArrayElement, 1961 CheckJNI::NewBooleanArray, 1962 CheckJNI::NewByteArray, 1963 CheckJNI::NewCharArray, 1964 CheckJNI::NewShortArray, 1965 CheckJNI::NewIntArray, 1966 CheckJNI::NewLongArray, 1967 CheckJNI::NewFloatArray, 1968 CheckJNI::NewDoubleArray, 1969 CheckJNI::GetBooleanArrayElements, 1970 CheckJNI::GetByteArrayElements, 1971 CheckJNI::GetCharArrayElements, 1972 CheckJNI::GetShortArrayElements, 1973 CheckJNI::GetIntArrayElements, 1974 CheckJNI::GetLongArrayElements, 1975 CheckJNI::GetFloatArrayElements, 1976 CheckJNI::GetDoubleArrayElements, 1977 CheckJNI::ReleaseBooleanArrayElements, 1978 CheckJNI::ReleaseByteArrayElements, 1979 CheckJNI::ReleaseCharArrayElements, 1980 CheckJNI::ReleaseShortArrayElements, 1981 CheckJNI::ReleaseIntArrayElements, 1982 CheckJNI::ReleaseLongArrayElements, 1983 CheckJNI::ReleaseFloatArrayElements, 1984 CheckJNI::ReleaseDoubleArrayElements, 1985 CheckJNI::GetBooleanArrayRegion, 1986 CheckJNI::GetByteArrayRegion, 1987 CheckJNI::GetCharArrayRegion, 1988 CheckJNI::GetShortArrayRegion, 1989 CheckJNI::GetIntArrayRegion, 1990 CheckJNI::GetLongArrayRegion, 1991 CheckJNI::GetFloatArrayRegion, 1992 CheckJNI::GetDoubleArrayRegion, 1993 CheckJNI::SetBooleanArrayRegion, 1994 CheckJNI::SetByteArrayRegion, 1995 CheckJNI::SetCharArrayRegion, 1996 CheckJNI::SetShortArrayRegion, 1997 CheckJNI::SetIntArrayRegion, 1998 CheckJNI::SetLongArrayRegion, 1999 CheckJNI::SetFloatArrayRegion, 2000 CheckJNI::SetDoubleArrayRegion, 2001 CheckJNI::RegisterNatives, 2002 CheckJNI::UnregisterNatives, 2003 CheckJNI::MonitorEnter, 2004 CheckJNI::MonitorExit, 2005 CheckJNI::GetJavaVM, 2006 CheckJNI::GetStringRegion, 2007 CheckJNI::GetStringUTFRegion, 2008 CheckJNI::GetPrimitiveArrayCritical, 2009 CheckJNI::ReleasePrimitiveArrayCritical, 2010 CheckJNI::GetStringCritical, 2011 CheckJNI::ReleaseStringCritical, 2012 CheckJNI::NewWeakGlobalRef, 2013 CheckJNI::DeleteWeakGlobalRef, 2014 CheckJNI::ExceptionCheck, 2015 CheckJNI::NewDirectByteBuffer, 2016 CheckJNI::GetDirectBufferAddress, 2017 CheckJNI::GetDirectBufferCapacity, 2018 CheckJNI::GetObjectRefType, 2019 }; 2020 2021 const JNINativeInterface* GetCheckJniNativeInterface() { 2022 return &gCheckNativeInterface; 2023 } 2024 2025 class CheckJII { 2026 public: 2027 static jint DestroyJavaVM(JavaVM* vm) { 2028 ScopedCheck sc(vm, false, __FUNCTION__); 2029 sc.Check(true, "v", vm); 2030 return CHECK_JNI_EXIT("I", BaseVm(vm)->DestroyJavaVM(vm)); 2031 } 2032 2033 static jint AttachCurrentThread(JavaVM* vm, JNIEnv** p_env, void* thr_args) { 2034 ScopedCheck sc(vm, false, __FUNCTION__); 2035 sc.Check(true, "vpp", vm, p_env, thr_args); 2036 return CHECK_JNI_EXIT("I", BaseVm(vm)->AttachCurrentThread(vm, p_env, thr_args)); 2037 } 2038 2039 static jint AttachCurrentThreadAsDaemon(JavaVM* vm, JNIEnv** p_env, void* thr_args) { 2040 ScopedCheck sc(vm, false, __FUNCTION__); 2041 sc.Check(true, "vpp", vm, p_env, thr_args); 2042 return CHECK_JNI_EXIT("I", BaseVm(vm)->AttachCurrentThreadAsDaemon(vm, p_env, thr_args)); 2043 } 2044 2045 static jint DetachCurrentThread(JavaVM* vm) { 2046 ScopedCheck sc(vm, true, __FUNCTION__); 2047 sc.Check(true, "v", vm); 2048 return CHECK_JNI_EXIT("I", BaseVm(vm)->DetachCurrentThread(vm)); 2049 } 2050 2051 static jint GetEnv(JavaVM* vm, void** env, jint version) { 2052 ScopedCheck sc(vm, true, __FUNCTION__); 2053 sc.Check(true, "vpI", vm); 2054 return CHECK_JNI_EXIT("I", BaseVm(vm)->GetEnv(vm, env, version)); 2055 } 2056 2057 private: 2058 static inline const JNIInvokeInterface* BaseVm(JavaVM* vm) { 2059 return reinterpret_cast<JavaVMExt*>(vm)->unchecked_functions; 2060 } 2061 }; 2062 2063 const JNIInvokeInterface gCheckInvokeInterface = { 2064 nullptr, // reserved0 2065 nullptr, // reserved1 2066 nullptr, // reserved2 2067 CheckJII::DestroyJavaVM, 2068 CheckJII::AttachCurrentThread, 2069 CheckJII::DetachCurrentThread, 2070 CheckJII::GetEnv, 2071 CheckJII::AttachCurrentThreadAsDaemon 2072 }; 2073 2074 const JNIInvokeInterface* GetCheckJniInvokeInterface() { 2075 return &gCheckInvokeInterface; 2076 } 2077 2078 } // namespace art 2079
