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 "gc/space/space.h" 27 #include "mirror/art_field-inl.h" 28 #include "mirror/art_method-inl.h" 29 #include "mirror/class-inl.h" 30 #include "mirror/object-inl.h" 31 #include "mirror/object_array-inl.h" 32 #include "mirror/throwable.h" 33 #include "object_utils.h" 34 #include "runtime.h" 35 #include "scoped_thread_state_change.h" 36 #include "thread.h" 37 38 namespace art { 39 40 static void JniAbort(const char* jni_function_name, const char* msg) { 41 Thread* self = Thread::Current(); 42 ScopedObjectAccess soa(self); 43 mirror::ArtMethod* current_method = self->GetCurrentMethod(NULL); 44 45 std::ostringstream os; 46 os << "JNI DETECTED ERROR IN APPLICATION: " << msg; 47 48 if (jni_function_name != NULL) { 49 os << "\n in call to " << jni_function_name; 50 } 51 // TODO: is this useful given that we're about to dump the calling thread's stack? 52 if (current_method != NULL) { 53 os << "\n from " << PrettyMethod(current_method); 54 } 55 os << "\n"; 56 self->Dump(os); 57 58 JavaVMExt* vm = Runtime::Current()->GetJavaVM(); 59 if (vm->check_jni_abort_hook != NULL) { 60 vm->check_jni_abort_hook(vm->check_jni_abort_hook_data, os.str()); 61 } else { 62 // Ensure that we get a native stack trace for this thread. 63 self->TransitionFromRunnableToSuspended(kNative); 64 LOG(FATAL) << os.str(); 65 self->TransitionFromSuspendedToRunnable(); // Unreachable, keep annotalysis happy. 66 } 67 } 68 69 static void JniAbortV(const char* jni_function_name, const char* fmt, va_list ap) { 70 std::string msg; 71 StringAppendV(&msg, fmt, ap); 72 JniAbort(jni_function_name, msg.c_str()); 73 } 74 75 void JniAbortF(const char* jni_function_name, const char* fmt, ...) { 76 va_list args; 77 va_start(args, fmt); 78 JniAbortV(jni_function_name, fmt, args); 79 va_end(args); 80 } 81 82 /* 83 * =========================================================================== 84 * JNI function helpers 85 * =========================================================================== 86 */ 87 88 static bool IsSirtLocalRef(JNIEnv* env, jobject localRef) { 89 return GetIndirectRefKind(localRef) == kSirtOrInvalid && 90 reinterpret_cast<JNIEnvExt*>(env)->self->SirtContains(localRef); 91 } 92 93 // Hack to allow forcecopy to work with jniGetNonMovableArrayElements. 94 // The code deliberately uses an invalid sequence of operations, so we 95 // need to pass it through unmodified. Review that code before making 96 // any changes here. 97 #define kNoCopyMagic 0xd5aab57f 98 99 // Flags passed into ScopedCheck. 100 #define kFlag_Default 0x0000 101 102 #define kFlag_CritBad 0x0000 // Calling while in critical is not allowed. 103 #define kFlag_CritOkay 0x0001 // Calling while in critical is allowed. 104 #define kFlag_CritGet 0x0002 // This is a critical "get". 105 #define kFlag_CritRelease 0x0003 // This is a critical "release". 106 #define kFlag_CritMask 0x0003 // Bit mask to get "crit" value. 107 108 #define kFlag_ExcepBad 0x0000 // Raised exceptions are not allowed. 109 #define kFlag_ExcepOkay 0x0004 // Raised exceptions are allowed. 110 111 #define kFlag_Release 0x0010 // Are we in a non-critical release function? 112 #define kFlag_NullableUtf 0x0020 // Are our UTF parameters nullable? 113 114 #define kFlag_Invocation 0x8000 // Part of the invocation interface (JavaVM*). 115 116 #define kFlag_ForceTrace 0x80000000 // Add this to a JNI function's flags if you want to trace every call. 117 118 static const char* gBuiltInPrefixes[] = { 119 "Landroid/", 120 "Lcom/android/", 121 "Lcom/google/android/", 122 "Ldalvik/", 123 "Ljava/", 124 "Ljavax/", 125 "Llibcore/", 126 "Lorg/apache/harmony/", 127 NULL 128 }; 129 130 static bool ShouldTrace(JavaVMExt* vm, const mirror::ArtMethod* method) 131 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 132 // If both "-Xcheck:jni" and "-Xjnitrace:" are enabled, we print trace messages 133 // when a native method that matches the -Xjnitrace argument calls a JNI function 134 // such as NewByteArray. 135 // If -verbose:third-party-jni is on, we want to log any JNI function calls 136 // made by a third-party native method. 137 std::string class_name(MethodHelper(method).GetDeclaringClassDescriptor()); 138 if (!vm->trace.empty() && class_name.find(vm->trace) != std::string::npos) { 139 return true; 140 } 141 if (VLOG_IS_ON(third_party_jni)) { 142 // Return true if we're trying to log all third-party JNI activity and 'method' doesn't look 143 // like part of Android. 144 for (size_t i = 0; gBuiltInPrefixes[i] != NULL; ++i) { 145 if (StartsWith(class_name, gBuiltInPrefixes[i])) { 146 return false; 147 } 148 } 149 return true; 150 } 151 return false; 152 } 153 154 class ScopedCheck { 155 public: 156 // For JNIEnv* functions. 157 explicit ScopedCheck(JNIEnv* env, int flags, const char* functionName) 158 SHARED_LOCK_FUNCTION(Locks::mutator_lock_) 159 : soa_(env) { 160 Init(flags, functionName, true); 161 CheckThread(flags); 162 } 163 164 // For JavaVM* functions. 165 // TODO: it's not correct that this is a lock function, but making it so aids annotalysis. 166 explicit ScopedCheck(JavaVM* vm, bool has_method, const char* functionName) 167 SHARED_LOCK_FUNCTION(Locks::mutator_lock_) 168 : soa_(vm) { 169 Init(kFlag_Invocation, functionName, has_method); 170 } 171 172 ~ScopedCheck() UNLOCK_FUNCTION(Locks::mutator_lock_) {} 173 174 const ScopedObjectAccess& soa() { 175 return soa_; 176 } 177 178 bool ForceCopy() { 179 return Runtime::Current()->GetJavaVM()->force_copy; 180 } 181 182 // Checks that 'class_name' is a valid "fully-qualified" JNI class name, like "java/lang/Thread" 183 // or "[Ljava/lang/Object;". A ClassLoader can actually normalize class names a couple of 184 // times, so using "java.lang.Thread" instead of "java/lang/Thread" might work in some 185 // circumstances, but this is incorrect. 186 void CheckClassName(const char* class_name) { 187 if (!IsValidJniClassName(class_name)) { 188 JniAbortF(function_name_, 189 "illegal class name '%s'\n" 190 " (should be of the form 'package/Class', [Lpackage/Class;' or '[[B')", 191 class_name); 192 } 193 } 194 195 /* 196 * Verify that the field is of the appropriate type. If the field has an 197 * object type, "java_object" is the object we're trying to assign into it. 198 * 199 * Works for both static and instance fields. 200 */ 201 void CheckFieldType(jobject java_object, jfieldID fid, char prim, bool isStatic) 202 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 203 mirror::ArtField* f = CheckFieldID(fid); 204 if (f == NULL) { 205 return; 206 } 207 mirror::Class* field_type = FieldHelper(f).GetType(); 208 if (!field_type->IsPrimitive()) { 209 if (java_object != NULL) { 210 mirror::Object* obj = soa_.Decode<mirror::Object*>(java_object); 211 // If java_object is a weak global ref whose referent has been cleared, 212 // obj will be NULL. Otherwise, obj should always be non-NULL 213 // and valid. 214 if (!Runtime::Current()->GetHeap()->IsHeapAddress(obj)) { 215 Runtime::Current()->GetHeap()->DumpSpaces(); 216 JniAbortF(function_name_, "field operation on invalid %s: %p", 217 ToStr<IndirectRefKind>(GetIndirectRefKind(java_object)).c_str(), java_object); 218 return; 219 } else { 220 if (!obj->InstanceOf(field_type)) { 221 JniAbortF(function_name_, "attempt to set field %s with value of wrong type: %s", 222 PrettyField(f).c_str(), PrettyTypeOf(obj).c_str()); 223 return; 224 } 225 } 226 } 227 } else if (field_type != Runtime::Current()->GetClassLinker()->FindPrimitiveClass(prim)) { 228 JniAbortF(function_name_, "attempt to set field %s with value of wrong type: %c", 229 PrettyField(f).c_str(), prim); 230 return; 231 } 232 233 if (isStatic != f->IsStatic()) { 234 if (isStatic) { 235 JniAbortF(function_name_, "accessing non-static field %s as static", PrettyField(f).c_str()); 236 } else { 237 JniAbortF(function_name_, "accessing static field %s as non-static", PrettyField(f).c_str()); 238 } 239 return; 240 } 241 } 242 243 /* 244 * Verify that this instance field ID is valid for this object. 245 * 246 * Assumes "jobj" has already been validated. 247 */ 248 void CheckInstanceFieldID(jobject java_object, jfieldID fid) 249 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 250 mirror::Object* o = soa_.Decode<mirror::Object*>(java_object); 251 if (o == NULL || !Runtime::Current()->GetHeap()->IsHeapAddress(o)) { 252 Runtime::Current()->GetHeap()->DumpSpaces(); 253 JniAbortF(function_name_, "field operation on invalid %s: %p", 254 ToStr<IndirectRefKind>(GetIndirectRefKind(java_object)).c_str(), java_object); 255 return; 256 } 257 258 mirror::ArtField* f = CheckFieldID(fid); 259 if (f == NULL) { 260 return; 261 } 262 mirror::Class* c = o->GetClass(); 263 FieldHelper fh(f); 264 if (c->FindInstanceField(fh.GetName(), fh.GetTypeDescriptor()) == NULL) { 265 JniAbortF(function_name_, "jfieldID %s not valid for an object of class %s", 266 PrettyField(f).c_str(), PrettyTypeOf(o).c_str()); 267 } 268 } 269 270 /* 271 * Verify that the pointer value is non-NULL. 272 */ 273 void CheckNonNull(const void* ptr) { 274 if (ptr == NULL) { 275 JniAbortF(function_name_, "non-nullable argument was NULL"); 276 } 277 } 278 279 /* 280 * Verify that the method's return type matches the type of call. 281 * 'expectedType' will be "L" for all objects, including arrays. 282 */ 283 void CheckSig(jmethodID mid, const char* expectedType, bool isStatic) 284 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 285 mirror::ArtMethod* m = CheckMethodID(mid); 286 if (m == NULL) { 287 return; 288 } 289 if (*expectedType != MethodHelper(m).GetShorty()[0]) { 290 JniAbortF(function_name_, "the return type of %s does not match %s", 291 function_name_, PrettyMethod(m).c_str()); 292 } 293 if (isStatic != m->IsStatic()) { 294 if (isStatic) { 295 JniAbortF(function_name_, "calling non-static method %s with %s", 296 PrettyMethod(m).c_str(), function_name_); 297 } else { 298 JniAbortF(function_name_, "calling static method %s with %s", 299 PrettyMethod(m).c_str(), function_name_); 300 } 301 } 302 } 303 304 /* 305 * Verify that this static field ID is valid for this class. 306 * 307 * Assumes "java_class" has already been validated. 308 */ 309 void CheckStaticFieldID(jclass java_class, jfieldID fid) 310 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 311 mirror::Class* c = soa_.Decode<mirror::Class*>(java_class); 312 const mirror::ArtField* f = CheckFieldID(fid); 313 if (f == NULL) { 314 return; 315 } 316 if (f->GetDeclaringClass() != c) { 317 JniAbortF(function_name_, "static jfieldID %p not valid for class %s", 318 fid, PrettyClass(c).c_str()); 319 } 320 } 321 322 /* 323 * Verify that "mid" is appropriate for "java_class". 324 * 325 * A mismatch isn't dangerous, because the jmethodID defines the class. In 326 * fact, java_class is unused in the implementation. It's best if we don't 327 * allow bad code in the system though. 328 * 329 * Instances of "java_class" must be instances of the method's declaring class. 330 */ 331 void CheckStaticMethod(jclass java_class, jmethodID mid) 332 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 333 const mirror::ArtMethod* m = CheckMethodID(mid); 334 if (m == NULL) { 335 return; 336 } 337 mirror::Class* c = soa_.Decode<mirror::Class*>(java_class); 338 if (!m->GetDeclaringClass()->IsAssignableFrom(c)) { 339 JniAbortF(function_name_, "can't call static %s on class %s", 340 PrettyMethod(m).c_str(), PrettyClass(c).c_str()); 341 } 342 } 343 344 /* 345 * Verify that "mid" is appropriate for "jobj". 346 * 347 * Make sure the object is an instance of the method's declaring class. 348 * (Note the mid might point to a declaration in an interface; this 349 * will be handled automatically by the instanceof check.) 350 */ 351 void CheckVirtualMethod(jobject java_object, jmethodID mid) 352 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 353 const mirror::ArtMethod* m = CheckMethodID(mid); 354 if (m == NULL) { 355 return; 356 } 357 mirror::Object* o = soa_.Decode<mirror::Object*>(java_object); 358 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 const mirror::ArtMethod* traceMethod = NULL; 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 != NULL) { 409 traceMethod = self->GetCurrentMethod(NULL); 410 } 411 } 412 413 if (((flags_ & kFlag_ForceTrace) != 0) || (traceMethod != NULL && ShouldTrace(soa_.Vm(), traceMethod))) { 414 va_start(ap, fmt0); 415 std::string msg; 416 for (const char* fmt = fmt0; *fmt;) { 417 char ch = *fmt++; 418 if (ch == 'B') { // jbyte 419 jbyte b = va_arg(ap, int); 420 if (b >= 0 && b < 10) { 421 StringAppendF(&msg, "%d", b); 422 } else { 423 StringAppendF(&msg, "%#x (%d)", b, b); 424 } 425 } else if (ch == 'C') { // jchar 426 jchar c = va_arg(ap, int); 427 if (c < 0x7f && c >= ' ') { 428 StringAppendF(&msg, "U+%x ('%c')", c, c); 429 } else { 430 StringAppendF(&msg, "U+%x", c); 431 } 432 } else if (ch == 'F' || ch == 'D') { // jfloat, jdouble 433 StringAppendF(&msg, "%g", va_arg(ap, double)); 434 } else if (ch == 'I' || ch == 'S') { // jint, jshort 435 StringAppendF(&msg, "%d", va_arg(ap, int)); 436 } else if (ch == 'J') { // jlong 437 StringAppendF(&msg, "%lld", va_arg(ap, jlong)); 438 } else if (ch == 'Z') { // jboolean 439 StringAppendF(&msg, "%s", va_arg(ap, int) ? "true" : "false"); 440 } else if (ch == 'V') { // void 441 msg += "void"; 442 } else if (ch == 'v') { // JavaVM* 443 JavaVM* vm = va_arg(ap, JavaVM*); 444 StringAppendF(&msg, "(JavaVM*)%p", vm); 445 } else if (ch == 'E') { // JNIEnv* 446 JNIEnv* env = va_arg(ap, JNIEnv*); 447 StringAppendF(&msg, "(JNIEnv*)%p", env); 448 } else if (ch == 'L' || ch == 'a' || ch == 's') { // jobject, jarray, jstring 449 // For logging purposes, these are identical. 450 jobject o = va_arg(ap, jobject); 451 if (o == NULL) { 452 msg += "NULL"; 453 } else { 454 StringAppendF(&msg, "%p", o); 455 } 456 } else if (ch == 'b') { // jboolean (JNI-style) 457 jboolean b = va_arg(ap, int); 458 msg += (b ? "JNI_TRUE" : "JNI_FALSE"); 459 } else if (ch == 'c') { // jclass 460 jclass jc = va_arg(ap, jclass); 461 mirror::Class* c = reinterpret_cast<mirror::Class*>(Thread::Current()->DecodeJObject(jc)); 462 if (c == NULL) { 463 msg += "NULL"; 464 } else if (c == kInvalidIndirectRefObject || !Runtime::Current()->GetHeap()->IsHeapAddress(c)) { 465 StringAppendF(&msg, "INVALID POINTER:%p", jc); 466 } else if (!c->IsClass()) { 467 msg += "INVALID NON-CLASS OBJECT OF TYPE:" + PrettyTypeOf(c); 468 } else { 469 msg += PrettyClass(c); 470 if (!entry) { 471 StringAppendF(&msg, " (%p)", jc); 472 } 473 } 474 } else if (ch == 'f') { // jfieldID 475 jfieldID fid = va_arg(ap, jfieldID); 476 mirror::ArtField* f = reinterpret_cast<mirror::ArtField*>(fid); 477 msg += PrettyField(f); 478 if (!entry) { 479 StringAppendF(&msg, " (%p)", fid); 480 } 481 } else if (ch == 'z') { // non-negative jsize 482 // You might expect jsize to be size_t, but it's not; it's the same as jint. 483 // We only treat this specially so we can do the non-negative check. 484 // TODO: maybe this wasn't worth it? 485 jint i = va_arg(ap, jint); 486 StringAppendF(&msg, "%d", i); 487 } else if (ch == 'm') { // jmethodID 488 jmethodID mid = va_arg(ap, jmethodID); 489 mirror::ArtMethod* m = reinterpret_cast<mirror::ArtMethod*>(mid); 490 msg += PrettyMethod(m); 491 if (!entry) { 492 StringAppendF(&msg, " (%p)", mid); 493 } 494 } else if (ch == 'p') { // void* ("pointer") 495 void* p = va_arg(ap, void*); 496 if (p == NULL) { 497 msg += "NULL"; 498 } else { 499 StringAppendF(&msg, "(void*) %p", p); 500 } 501 } else if (ch == 'r') { // jint (release mode) 502 jint releaseMode = va_arg(ap, jint); 503 if (releaseMode == 0) { 504 msg += "0"; 505 } else if (releaseMode == JNI_ABORT) { 506 msg += "JNI_ABORT"; 507 } else if (releaseMode == JNI_COMMIT) { 508 msg += "JNI_COMMIT"; 509 } else { 510 StringAppendF(&msg, "invalid release mode %d", releaseMode); 511 } 512 } else if (ch == 'u') { // const char* (Modified UTF-8) 513 const char* utf = va_arg(ap, const char*); 514 if (utf == NULL) { 515 msg += "NULL"; 516 } else { 517 StringAppendF(&msg, "\"%s\"", utf); 518 } 519 } else if (ch == '.') { 520 msg += "..."; 521 } else { 522 JniAbortF(function_name_, "unknown trace format specifier: %c", ch); 523 return; 524 } 525 if (*fmt) { 526 StringAppendF(&msg, ", "); 527 } 528 } 529 va_end(ap); 530 531 if ((flags_ & kFlag_ForceTrace) != 0) { 532 LOG(INFO) << "JNI: call to " << function_name_ << "(" << msg << ")"; 533 } else if (entry) { 534 if (has_method_) { 535 std::string methodName(PrettyMethod(traceMethod, false)); 536 LOG(INFO) << "JNI: " << methodName << " -> " << function_name_ << "(" << msg << ")"; 537 indent_ = methodName.size() + 1; 538 } else { 539 LOG(INFO) << "JNI: -> " << function_name_ << "(" << msg << ")"; 540 indent_ = 0; 541 } 542 } else { 543 LOG(INFO) << StringPrintf("JNI: %*s<- %s returned %s", indent_, "", function_name_, msg.c_str()); 544 } 545 } 546 547 // We always do the thorough checks on entry, and never on exit... 548 if (entry) { 549 va_start(ap, fmt0); 550 for (const char* fmt = fmt0; *fmt; ++fmt) { 551 char ch = *fmt; 552 if (ch == 'a') { 553 CheckArray(va_arg(ap, jarray)); 554 } else if (ch == 'c') { 555 CheckInstance(kClass, va_arg(ap, jclass)); 556 } else if (ch == 'L') { 557 CheckObject(va_arg(ap, jobject)); 558 } else if (ch == 'r') { 559 CheckReleaseMode(va_arg(ap, jint)); 560 } else if (ch == 's') { 561 CheckInstance(kString, va_arg(ap, jstring)); 562 } else if (ch == 'u') { 563 if ((flags_ & kFlag_Release) != 0) { 564 CheckNonNull(va_arg(ap, const char*)); 565 } else { 566 bool nullable = ((flags_ & kFlag_NullableUtf) != 0); 567 CheckUtfString(va_arg(ap, const char*), nullable); 568 } 569 } else if (ch == 'z') { 570 CheckLengthPositive(va_arg(ap, jsize)); 571 } else if (strchr("BCISZbfmpEv", ch) != NULL) { 572 va_arg(ap, uint32_t); // Skip this argument. 573 } else if (ch == 'D' || ch == 'F') { 574 va_arg(ap, double); // Skip this argument. 575 } else if (ch == 'J') { 576 va_arg(ap, uint64_t); // Skip this argument. 577 } else if (ch == '.') { 578 } else { 579 LOG(FATAL) << "Unknown check format specifier: " << ch; 580 } 581 } 582 va_end(ap); 583 } 584 } 585 586 enum InstanceKind { 587 kClass, 588 kDirectByteBuffer, 589 kObject, 590 kString, 591 kThrowable, 592 }; 593 594 /* 595 * Verify that "jobj" is a valid non-NULL object reference, and points to 596 * an instance of expectedClass. 597 * 598 * Because we're looking at an object on the GC heap, we have to switch 599 * to "running" mode before doing the checks. 600 */ 601 bool CheckInstance(InstanceKind kind, jobject java_object) 602 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 603 const char* what = NULL; 604 switch (kind) { 605 case kClass: 606 what = "jclass"; 607 break; 608 case kDirectByteBuffer: 609 what = "direct ByteBuffer"; 610 break; 611 case kObject: 612 what = "jobject"; 613 break; 614 case kString: 615 what = "jstring"; 616 break; 617 case kThrowable: 618 what = "jthrowable"; 619 break; 620 default: 621 LOG(FATAL) << "Unknown kind " << static_cast<int>(kind); 622 } 623 624 if (java_object == NULL) { 625 JniAbortF(function_name_, "%s received null %s", function_name_, what); 626 return false; 627 } 628 629 mirror::Object* obj = soa_.Decode<mirror::Object*>(java_object); 630 if (!Runtime::Current()->GetHeap()->IsHeapAddress(obj)) { 631 Runtime::Current()->GetHeap()->DumpSpaces(); 632 JniAbortF(function_name_, "%s is an invalid %s: %p (%p)", 633 what, ToStr<IndirectRefKind>(GetIndirectRefKind(java_object)).c_str(), java_object, obj); 634 return false; 635 } 636 637 bool okay = true; 638 switch (kind) { 639 case kClass: 640 okay = obj->IsClass(); 641 break; 642 case kDirectByteBuffer: 643 UNIMPLEMENTED(FATAL); 644 break; 645 case kString: 646 okay = obj->GetClass()->IsStringClass(); 647 break; 648 case kThrowable: 649 okay = obj->GetClass()->IsThrowableClass(); 650 break; 651 case kObject: 652 break; 653 } 654 if (!okay) { 655 JniAbortF(function_name_, "%s has wrong type: %s", what, PrettyTypeOf(obj).c_str()); 656 return false; 657 } 658 659 return true; 660 } 661 662 private: 663 // Set "has_method" to true if we have a valid thread with a method pointer. 664 // We won't have one before attaching a thread, after detaching a thread, or 665 // when shutting down the runtime. 666 void Init(int flags, const char* functionName, bool has_method) { 667 flags_ = flags; 668 function_name_ = functionName; 669 has_method_ = has_method; 670 } 671 672 /* 673 * Verify that "array" is non-NULL and points to an Array object. 674 * 675 * Since we're dealing with objects, switch to "running" mode. 676 */ 677 void CheckArray(jarray java_array) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 678 if (java_array == NULL) { 679 JniAbortF(function_name_, "jarray was NULL"); 680 return; 681 } 682 683 mirror::Array* a = soa_.Decode<mirror::Array*>(java_array); 684 if (!Runtime::Current()->GetHeap()->IsHeapAddress(a)) { 685 Runtime::Current()->GetHeap()->DumpSpaces(); 686 JniAbortF(function_name_, "jarray is an invalid %s: %p (%p)", 687 ToStr<IndirectRefKind>(GetIndirectRefKind(java_array)).c_str(), java_array, a); 688 } else if (!a->IsArrayInstance()) { 689 JniAbortF(function_name_, "jarray argument has non-array type: %s", PrettyTypeOf(a).c_str()); 690 } 691 } 692 693 void CheckLengthPositive(jsize length) { 694 if (length < 0) { 695 JniAbortF(function_name_, "negative jsize: %d", length); 696 } 697 } 698 699 mirror::ArtField* CheckFieldID(jfieldID fid) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 700 if (fid == NULL) { 701 JniAbortF(function_name_, "jfieldID was NULL"); 702 return NULL; 703 } 704 mirror::ArtField* f = soa_.DecodeField(fid); 705 if (!Runtime::Current()->GetHeap()->IsHeapAddress(f) || !f->IsArtField()) { 706 Runtime::Current()->GetHeap()->DumpSpaces(); 707 JniAbortF(function_name_, "invalid jfieldID: %p", fid); 708 return NULL; 709 } 710 return f; 711 } 712 713 mirror::ArtMethod* CheckMethodID(jmethodID mid) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 714 if (mid == NULL) { 715 JniAbortF(function_name_, "jmethodID was NULL"); 716 return NULL; 717 } 718 mirror::ArtMethod* m = soa_.DecodeMethod(mid); 719 if (!Runtime::Current()->GetHeap()->IsHeapAddress(m) || !m->IsArtMethod()) { 720 Runtime::Current()->GetHeap()->DumpSpaces(); 721 JniAbortF(function_name_, "invalid jmethodID: %p", mid); 722 return NULL; 723 } 724 return m; 725 } 726 727 /* 728 * Verify that "jobj" is a valid object, and that it's an object that JNI 729 * is allowed to know about. We allow NULL references. 730 * 731 * Switches to "running" mode before performing checks. 732 */ 733 void CheckObject(jobject java_object) 734 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 735 if (java_object == NULL) { 736 return; 737 } 738 739 mirror::Object* o = soa_.Decode<mirror::Object*>(java_object); 740 if (!Runtime::Current()->GetHeap()->IsHeapAddress(o)) { 741 Runtime::Current()->GetHeap()->DumpSpaces(); 742 // TODO: when we remove work_around_app_jni_bugs, this should be impossible. 743 JniAbortF(function_name_, "native code passing in reference to invalid %s: %p", 744 ToStr<IndirectRefKind>(GetIndirectRefKind(java_object)).c_str(), java_object); 745 } 746 } 747 748 /* 749 * Verify that the "mode" argument passed to a primitive array Release 750 * function is one of the valid values. 751 */ 752 void CheckReleaseMode(jint mode) { 753 if (mode != 0 && mode != JNI_COMMIT && mode != JNI_ABORT) { 754 JniAbortF(function_name_, "unknown value for release mode: %d", mode); 755 } 756 } 757 758 void CheckThread(int flags) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 759 Thread* self = Thread::Current(); 760 if (self == NULL) { 761 JniAbortF(function_name_, "a thread (tid %d) is making JNI calls without being attached", GetTid()); 762 return; 763 } 764 765 // Get the *correct* JNIEnv by going through our TLS pointer. 766 JNIEnvExt* threadEnv = self->GetJniEnv(); 767 768 // Verify that the current thread is (a) attached and (b) associated with 769 // this particular instance of JNIEnv. 770 if (soa_.Env() != threadEnv) { 771 if (soa_.Vm()->work_around_app_jni_bugs) { 772 // If we're keeping broken code limping along, we need to suppress the abort... 773 LOG(ERROR) << "APP BUG DETECTED: thread " << *self << " using JNIEnv* from thread " << *soa_.Self(); 774 } else { 775 JniAbortF(function_name_, "thread %s using JNIEnv* from thread %s", 776 ToStr<Thread>(*self).c_str(), ToStr<Thread>(*soa_.Self()).c_str()); 777 return; 778 } 779 } 780 781 // Verify that, if this thread previously made a critical "get" call, we 782 // do the corresponding "release" call before we try anything else. 783 switch (flags & kFlag_CritMask) { 784 case kFlag_CritOkay: // okay to call this method 785 break; 786 case kFlag_CritBad: // not okay to call 787 if (threadEnv->critical) { 788 JniAbortF(function_name_, "thread %s using JNI after critical get", ToStr<Thread>(*self).c_str()); 789 return; 790 } 791 break; 792 case kFlag_CritGet: // this is a "get" call 793 // Don't check here; we allow nested gets. 794 threadEnv->critical++; 795 break; 796 case kFlag_CritRelease: // this is a "release" call 797 threadEnv->critical--; 798 if (threadEnv->critical < 0) { 799 JniAbortF(function_name_, "thread %s called too many critical releases", ToStr<Thread>(*self).c_str()); 800 return; 801 } 802 break; 803 default: 804 LOG(FATAL) << "Bad flags (internal error): " << flags; 805 } 806 807 // Verify that, if an exception has been raised, the native code doesn't 808 // make any JNI calls other than the Exception* methods. 809 if ((flags & kFlag_ExcepOkay) == 0 && self->IsExceptionPending()) { 810 ThrowLocation throw_location; 811 mirror::Throwable* exception = self->GetException(&throw_location); 812 std::string type(PrettyTypeOf(exception)); 813 JniAbortF(function_name_, "JNI %s called with pending exception '%s' thrown in %s", 814 function_name_, type.c_str(), throw_location.Dump().c_str()); 815 return; 816 } 817 } 818 819 // Verifies that "bytes" points to valid Modified UTF-8 data. 820 void CheckUtfString(const char* bytes, bool nullable) { 821 if (bytes == NULL) { 822 if (!nullable) { 823 JniAbortF(function_name_, "non-nullable const char* was NULL"); 824 return; 825 } 826 return; 827 } 828 829 const char* errorKind = NULL; 830 uint8_t utf8 = CheckUtfBytes(bytes, &errorKind); 831 if (errorKind != NULL) { 832 JniAbortF(function_name_, 833 "input is not valid Modified UTF-8: illegal %s byte %#x\n" 834 " string: '%s'", errorKind, utf8, bytes); 835 return; 836 } 837 } 838 839 static uint8_t CheckUtfBytes(const char* bytes, const char** errorKind) { 840 while (*bytes != '\0') { 841 uint8_t utf8 = *(bytes++); 842 // Switch on the high four bits. 843 switch (utf8 >> 4) { 844 case 0x00: 845 case 0x01: 846 case 0x02: 847 case 0x03: 848 case 0x04: 849 case 0x05: 850 case 0x06: 851 case 0x07: 852 // Bit pattern 0xxx. No need for any extra bytes. 853 break; 854 case 0x08: 855 case 0x09: 856 case 0x0a: 857 case 0x0b: 858 case 0x0f: 859 /* 860 * Bit pattern 10xx or 1111, which are illegal start bytes. 861 * Note: 1111 is valid for normal UTF-8, but not the 862 * Modified UTF-8 used here. 863 */ 864 *errorKind = "start"; 865 return utf8; 866 case 0x0e: 867 // Bit pattern 1110, so there are two additional bytes. 868 utf8 = *(bytes++); 869 if ((utf8 & 0xc0) != 0x80) { 870 *errorKind = "continuation"; 871 return utf8; 872 } 873 // Fall through to take care of the final byte. 874 case 0x0c: 875 case 0x0d: 876 // Bit pattern 110x, so there is one additional byte. 877 utf8 = *(bytes++); 878 if ((utf8 & 0xc0) != 0x80) { 879 *errorKind = "continuation"; 880 return utf8; 881 } 882 break; 883 } 884 } 885 return 0; 886 } 887 888 const ScopedObjectAccess soa_; 889 const char* function_name_; 890 int flags_; 891 bool has_method_; 892 int indent_; 893 894 DISALLOW_COPY_AND_ASSIGN(ScopedCheck); 895 }; 896 897 #define CHECK_JNI_ENTRY(flags, types, args...) \ 898 ScopedCheck sc(env, flags, __FUNCTION__); \ 899 sc.Check(true, types, ##args) 900 901 #define CHECK_JNI_EXIT(type, exp) ({ \ 902 auto _rc = (exp); \ 903 sc.Check(false, type, _rc); \ 904 _rc; }) 905 #define CHECK_JNI_EXIT_VOID() \ 906 sc.Check(false, "V") 907 908 /* 909 * =========================================================================== 910 * Guarded arrays 911 * =========================================================================== 912 */ 913 914 #define kGuardLen 512 /* must be multiple of 2 */ 915 #define kGuardPattern 0xd5e3 /* uncommon values; d5e3d5e3 invalid addr */ 916 #define kGuardMagic 0xffd5aa96 917 918 /* this gets tucked in at the start of the buffer; struct size must be even */ 919 struct GuardedCopy { 920 uint32_t magic; 921 uLong adler; 922 size_t original_length; 923 const void* original_ptr; 924 925 /* find the GuardedCopy given the pointer into the "live" data */ 926 static inline const GuardedCopy* FromData(const void* dataBuf) { 927 return reinterpret_cast<const GuardedCopy*>(ActualBuffer(dataBuf)); 928 } 929 930 /* 931 * Create an over-sized buffer to hold the contents of "buf". Copy it in, 932 * filling in the area around it with guard data. 933 * 934 * We use a 16-bit pattern to make a rogue memset less likely to elude us. 935 */ 936 static void* Create(const void* buf, size_t len, bool modOkay) { 937 size_t newLen = ActualLength(len); 938 uint8_t* newBuf = DebugAlloc(newLen); 939 940 // Fill it in with a pattern. 941 uint16_t* pat = reinterpret_cast<uint16_t*>(newBuf); 942 for (size_t i = 0; i < newLen / 2; i++) { 943 *pat++ = kGuardPattern; 944 } 945 946 // Copy the data in; note "len" could be zero. 947 memcpy(newBuf + kGuardLen / 2, buf, len); 948 949 // If modification is not expected, grab a checksum. 950 uLong adler = 0; 951 if (!modOkay) { 952 adler = adler32(0L, Z_NULL, 0); 953 adler = adler32(adler, reinterpret_cast<const Bytef*>(buf), len); 954 *reinterpret_cast<uLong*>(newBuf) = adler; 955 } 956 957 GuardedCopy* pExtra = reinterpret_cast<GuardedCopy*>(newBuf); 958 pExtra->magic = kGuardMagic; 959 pExtra->adler = adler; 960 pExtra->original_ptr = buf; 961 pExtra->original_length = len; 962 963 return newBuf + kGuardLen / 2; 964 } 965 966 /* 967 * Free up the guard buffer, scrub it, and return the original pointer. 968 */ 969 static void* Destroy(void* dataBuf) { 970 const GuardedCopy* pExtra = GuardedCopy::FromData(dataBuf); 971 void* original_ptr = const_cast<void*>(pExtra->original_ptr); 972 size_t len = pExtra->original_length; 973 DebugFree(dataBuf, len); 974 return original_ptr; 975 } 976 977 /* 978 * Verify the guard area and, if "modOkay" is false, that the data itself 979 * has not been altered. 980 * 981 * The caller has already checked that "dataBuf" is non-NULL. 982 */ 983 static void Check(const char* functionName, const void* dataBuf, bool modOkay) { 984 static const uint32_t kMagicCmp = kGuardMagic; 985 const uint8_t* fullBuf = ActualBuffer(dataBuf); 986 const GuardedCopy* pExtra = GuardedCopy::FromData(dataBuf); 987 988 // Before we do anything with "pExtra", check the magic number. We 989 // do the check with memcmp rather than "==" in case the pointer is 990 // unaligned. If it points to completely bogus memory we're going 991 // to crash, but there's no easy way around that. 992 if (memcmp(&pExtra->magic, &kMagicCmp, 4) != 0) { 993 uint8_t buf[4]; 994 memcpy(buf, &pExtra->magic, 4); 995 JniAbortF(functionName, 996 "guard magic does not match (found 0x%02x%02x%02x%02x) -- incorrect data pointer %p?", 997 buf[3], buf[2], buf[1], buf[0], dataBuf); // Assumes little-endian. 998 } 999 1000 size_t len = pExtra->original_length; 1001 1002 // Check bottom half of guard; skip over optional checksum storage. 1003 const uint16_t* pat = reinterpret_cast<const uint16_t*>(fullBuf); 1004 for (size_t i = sizeof(GuardedCopy) / 2; i < (kGuardLen / 2 - sizeof(GuardedCopy)) / 2; i++) { 1005 if (pat[i] != kGuardPattern) { 1006 JniAbortF(functionName, "guard pattern(1) disturbed at %p +%d", fullBuf, i*2); 1007 } 1008 } 1009 1010 int offset = kGuardLen / 2 + len; 1011 if (offset & 0x01) { 1012 // Odd byte; expected value depends on endian. 1013 const uint16_t patSample = kGuardPattern; 1014 uint8_t expected_byte = reinterpret_cast<const uint8_t*>(&patSample)[1]; 1015 if (fullBuf[offset] != expected_byte) { 1016 JniAbortF(functionName, "guard pattern disturbed in odd byte after %p +%d 0x%02x 0x%02x", 1017 fullBuf, offset, fullBuf[offset], expected_byte); 1018 } 1019 offset++; 1020 } 1021 1022 // Check top half of guard. 1023 pat = reinterpret_cast<const uint16_t*>(fullBuf + offset); 1024 for (size_t i = 0; i < kGuardLen / 4; i++) { 1025 if (pat[i] != kGuardPattern) { 1026 JniAbortF(functionName, "guard pattern(2) disturbed at %p +%d", fullBuf, offset + i*2); 1027 } 1028 } 1029 1030 // If modification is not expected, verify checksum. Strictly speaking 1031 // this is wrong: if we told the client that we made a copy, there's no 1032 // reason they can't alter the buffer. 1033 if (!modOkay) { 1034 uLong adler = adler32(0L, Z_NULL, 0); 1035 adler = adler32(adler, (const Bytef*)dataBuf, len); 1036 if (pExtra->adler != adler) { 1037 JniAbortF(functionName, "buffer modified (0x%08lx vs 0x%08lx) at address %p", 1038 pExtra->adler, adler, dataBuf); 1039 } 1040 } 1041 } 1042 1043 private: 1044 static uint8_t* DebugAlloc(size_t len) { 1045 void* result = mmap(NULL, len, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANON, -1, 0); 1046 if (result == MAP_FAILED) { 1047 PLOG(FATAL) << "GuardedCopy::create mmap(" << len << ") failed"; 1048 } 1049 return reinterpret_cast<uint8_t*>(result); 1050 } 1051 1052 static void DebugFree(void* dataBuf, size_t len) { 1053 uint8_t* fullBuf = ActualBuffer(dataBuf); 1054 size_t totalByteCount = ActualLength(len); 1055 // TODO: we could mprotect instead, and keep the allocation around for a while. 1056 // This would be even more expensive, but it might catch more errors. 1057 // if (mprotect(fullBuf, totalByteCount, PROT_NONE) != 0) { 1058 // PLOG(WARNING) << "mprotect(PROT_NONE) failed"; 1059 // } 1060 if (munmap(fullBuf, totalByteCount) != 0) { 1061 PLOG(FATAL) << "munmap(" << reinterpret_cast<void*>(fullBuf) << ", " << totalByteCount << ") failed"; 1062 } 1063 } 1064 1065 static const uint8_t* ActualBuffer(const void* dataBuf) { 1066 return reinterpret_cast<const uint8_t*>(dataBuf) - kGuardLen / 2; 1067 } 1068 1069 static uint8_t* ActualBuffer(void* dataBuf) { 1070 return reinterpret_cast<uint8_t*>(dataBuf) - kGuardLen / 2; 1071 } 1072 1073 // Underlying length of a user allocation of 'length' bytes. 1074 static size_t ActualLength(size_t length) { 1075 return (length + kGuardLen + 1) & ~0x01; 1076 } 1077 }; 1078 1079 /* 1080 * Create a guarded copy of a primitive array. Modifications to the copied 1081 * data are allowed. Returns a pointer to the copied data. 1082 */ 1083 static void* CreateGuardedPACopy(JNIEnv* env, const jarray java_array, jboolean* isCopy) { 1084 ScopedObjectAccess soa(env); 1085 1086 mirror::Array* a = soa.Decode<mirror::Array*>(java_array); 1087 size_t component_size = a->GetClass()->GetComponentSize(); 1088 size_t byte_count = a->GetLength() * component_size; 1089 void* result = GuardedCopy::Create(a->GetRawData(component_size), byte_count, true); 1090 if (isCopy != NULL) { 1091 *isCopy = JNI_TRUE; 1092 } 1093 return result; 1094 } 1095 1096 /* 1097 * Perform the array "release" operation, which may or may not copy data 1098 * back into the managed heap, and may or may not release the underlying storage. 1099 */ 1100 static void ReleaseGuardedPACopy(JNIEnv* env, jarray java_array, void* dataBuf, int mode) { 1101 if (reinterpret_cast<uintptr_t>(dataBuf) == kNoCopyMagic) { 1102 return; 1103 } 1104 1105 ScopedObjectAccess soa(env); 1106 mirror::Array* a = soa.Decode<mirror::Array*>(java_array); 1107 1108 GuardedCopy::Check(__FUNCTION__, dataBuf, true); 1109 1110 if (mode != JNI_ABORT) { 1111 size_t len = GuardedCopy::FromData(dataBuf)->original_length; 1112 memcpy(a->GetRawData(a->GetClass()->GetComponentSize()), dataBuf, len); 1113 } 1114 if (mode != JNI_COMMIT) { 1115 GuardedCopy::Destroy(dataBuf); 1116 } 1117 } 1118 1119 /* 1120 * =========================================================================== 1121 * JNI functions 1122 * =========================================================================== 1123 */ 1124 1125 class CheckJNI { 1126 public: 1127 static jint GetVersion(JNIEnv* env) { 1128 CHECK_JNI_ENTRY(kFlag_Default, "E", env); 1129 return CHECK_JNI_EXIT("I", baseEnv(env)->GetVersion(env)); 1130 } 1131 1132 static jclass DefineClass(JNIEnv* env, const char* name, jobject loader, const jbyte* buf, jsize bufLen) { 1133 CHECK_JNI_ENTRY(kFlag_Default, "EuLpz", env, name, loader, buf, bufLen); 1134 sc.CheckClassName(name); 1135 return CHECK_JNI_EXIT("c", baseEnv(env)->DefineClass(env, name, loader, buf, bufLen)); 1136 } 1137 1138 static jclass FindClass(JNIEnv* env, const char* name) { 1139 CHECK_JNI_ENTRY(kFlag_Default, "Eu", env, name); 1140 sc.CheckClassName(name); 1141 return CHECK_JNI_EXIT("c", baseEnv(env)->FindClass(env, name)); 1142 } 1143 1144 static jclass GetSuperclass(JNIEnv* env, jclass c) { 1145 CHECK_JNI_ENTRY(kFlag_Default, "Ec", env, c); 1146 return CHECK_JNI_EXIT("c", baseEnv(env)->GetSuperclass(env, c)); 1147 } 1148 1149 static jboolean IsAssignableFrom(JNIEnv* env, jclass c1, jclass c2) { 1150 CHECK_JNI_ENTRY(kFlag_Default, "Ecc", env, c1, c2); 1151 return CHECK_JNI_EXIT("b", baseEnv(env)->IsAssignableFrom(env, c1, c2)); 1152 } 1153 1154 static jmethodID FromReflectedMethod(JNIEnv* env, jobject method) { 1155 CHECK_JNI_ENTRY(kFlag_Default, "EL", env, method); 1156 // TODO: check that 'field' is a java.lang.reflect.Method. 1157 return CHECK_JNI_EXIT("m", baseEnv(env)->FromReflectedMethod(env, method)); 1158 } 1159 1160 static jfieldID FromReflectedField(JNIEnv* env, jobject field) { 1161 CHECK_JNI_ENTRY(kFlag_Default, "EL", env, field); 1162 // TODO: check that 'field' is a java.lang.reflect.Field. 1163 return CHECK_JNI_EXIT("f", baseEnv(env)->FromReflectedField(env, field)); 1164 } 1165 1166 static jobject ToReflectedMethod(JNIEnv* env, jclass cls, jmethodID mid, jboolean isStatic) { 1167 CHECK_JNI_ENTRY(kFlag_Default, "Ecmb", env, cls, mid, isStatic); 1168 return CHECK_JNI_EXIT("L", baseEnv(env)->ToReflectedMethod(env, cls, mid, isStatic)); 1169 } 1170 1171 static jobject ToReflectedField(JNIEnv* env, jclass cls, jfieldID fid, jboolean isStatic) { 1172 CHECK_JNI_ENTRY(kFlag_Default, "Ecfb", env, cls, fid, isStatic); 1173 return CHECK_JNI_EXIT("L", baseEnv(env)->ToReflectedField(env, cls, fid, isStatic)); 1174 } 1175 1176 static jint Throw(JNIEnv* env, jthrowable obj) { 1177 CHECK_JNI_ENTRY(kFlag_Default, "EL", env, obj); 1178 // TODO: check that 'obj' is a java.lang.Throwable. 1179 return CHECK_JNI_EXIT("I", baseEnv(env)->Throw(env, obj)); 1180 } 1181 1182 static jint ThrowNew(JNIEnv* env, jclass c, const char* message) { 1183 CHECK_JNI_ENTRY(kFlag_NullableUtf, "Ecu", env, c, message); 1184 return CHECK_JNI_EXIT("I", baseEnv(env)->ThrowNew(env, c, message)); 1185 } 1186 1187 static jthrowable ExceptionOccurred(JNIEnv* env) { 1188 CHECK_JNI_ENTRY(kFlag_ExcepOkay, "E", env); 1189 return CHECK_JNI_EXIT("L", baseEnv(env)->ExceptionOccurred(env)); 1190 } 1191 1192 static void ExceptionDescribe(JNIEnv* env) { 1193 CHECK_JNI_ENTRY(kFlag_ExcepOkay, "E", env); 1194 baseEnv(env)->ExceptionDescribe(env); 1195 CHECK_JNI_EXIT_VOID(); 1196 } 1197 1198 static void ExceptionClear(JNIEnv* env) { 1199 CHECK_JNI_ENTRY(kFlag_ExcepOkay, "E", env); 1200 baseEnv(env)->ExceptionClear(env); 1201 CHECK_JNI_EXIT_VOID(); 1202 } 1203 1204 static void FatalError(JNIEnv* env, const char* msg) { 1205 // The JNI specification doesn't say it's okay to call FatalError with a pending exception, 1206 // but you're about to abort anyway, and it's quite likely that you have a pending exception, 1207 // and it's not unimaginable that you don't know that you do. So we allow it. 1208 CHECK_JNI_ENTRY(kFlag_ExcepOkay | kFlag_NullableUtf, "Eu", env, msg); 1209 baseEnv(env)->FatalError(env, msg); 1210 CHECK_JNI_EXIT_VOID(); 1211 } 1212 1213 static jint PushLocalFrame(JNIEnv* env, jint capacity) { 1214 CHECK_JNI_ENTRY(kFlag_Default | kFlag_ExcepOkay, "EI", env, capacity); 1215 return CHECK_JNI_EXIT("I", baseEnv(env)->PushLocalFrame(env, capacity)); 1216 } 1217 1218 static jobject PopLocalFrame(JNIEnv* env, jobject res) { 1219 CHECK_JNI_ENTRY(kFlag_Default | kFlag_ExcepOkay, "EL", env, res); 1220 return CHECK_JNI_EXIT("L", baseEnv(env)->PopLocalFrame(env, res)); 1221 } 1222 1223 static jobject NewGlobalRef(JNIEnv* env, jobject obj) { 1224 CHECK_JNI_ENTRY(kFlag_Default, "EL", env, obj); 1225 return CHECK_JNI_EXIT("L", baseEnv(env)->NewGlobalRef(env, obj)); 1226 } 1227 1228 static jobject NewLocalRef(JNIEnv* env, jobject ref) { 1229 CHECK_JNI_ENTRY(kFlag_Default, "EL", env, ref); 1230 return CHECK_JNI_EXIT("L", baseEnv(env)->NewLocalRef(env, ref)); 1231 } 1232 1233 static void DeleteGlobalRef(JNIEnv* env, jobject globalRef) { 1234 CHECK_JNI_ENTRY(kFlag_Default | kFlag_ExcepOkay, "EL", env, globalRef); 1235 if (globalRef != NULL && GetIndirectRefKind(globalRef) != kGlobal) { 1236 JniAbortF(__FUNCTION__, "DeleteGlobalRef on %s: %p", 1237 ToStr<IndirectRefKind>(GetIndirectRefKind(globalRef)).c_str(), globalRef); 1238 } else { 1239 baseEnv(env)->DeleteGlobalRef(env, globalRef); 1240 CHECK_JNI_EXIT_VOID(); 1241 } 1242 } 1243 1244 static void DeleteWeakGlobalRef(JNIEnv* env, jweak weakGlobalRef) { 1245 CHECK_JNI_ENTRY(kFlag_Default | kFlag_ExcepOkay, "EL", env, weakGlobalRef); 1246 if (weakGlobalRef != NULL && GetIndirectRefKind(weakGlobalRef) != kWeakGlobal) { 1247 JniAbortF(__FUNCTION__, "DeleteWeakGlobalRef on %s: %p", 1248 ToStr<IndirectRefKind>(GetIndirectRefKind(weakGlobalRef)).c_str(), weakGlobalRef); 1249 } else { 1250 baseEnv(env)->DeleteWeakGlobalRef(env, weakGlobalRef); 1251 CHECK_JNI_EXIT_VOID(); 1252 } 1253 } 1254 1255 static void DeleteLocalRef(JNIEnv* env, jobject localRef) { 1256 CHECK_JNI_ENTRY(kFlag_Default | kFlag_ExcepOkay, "EL", env, localRef); 1257 if (localRef != NULL && GetIndirectRefKind(localRef) != kLocal && !IsSirtLocalRef(env, localRef)) { 1258 JniAbortF(__FUNCTION__, "DeleteLocalRef on %s: %p", 1259 ToStr<IndirectRefKind>(GetIndirectRefKind(localRef)).c_str(), localRef); 1260 } else { 1261 baseEnv(env)->DeleteLocalRef(env, localRef); 1262 CHECK_JNI_EXIT_VOID(); 1263 } 1264 } 1265 1266 static jint EnsureLocalCapacity(JNIEnv *env, jint capacity) { 1267 CHECK_JNI_ENTRY(kFlag_Default, "EI", env, capacity); 1268 return CHECK_JNI_EXIT("I", baseEnv(env)->EnsureLocalCapacity(env, capacity)); 1269 } 1270 1271 static jboolean IsSameObject(JNIEnv* env, jobject ref1, jobject ref2) { 1272 CHECK_JNI_ENTRY(kFlag_Default, "ELL", env, ref1, ref2); 1273 return CHECK_JNI_EXIT("b", baseEnv(env)->IsSameObject(env, ref1, ref2)); 1274 } 1275 1276 static jobject AllocObject(JNIEnv* env, jclass c) { 1277 CHECK_JNI_ENTRY(kFlag_Default, "Ec", env, c); 1278 return CHECK_JNI_EXIT("L", baseEnv(env)->AllocObject(env, c)); 1279 } 1280 1281 static jobject NewObject(JNIEnv* env, jclass c, jmethodID mid, ...) { 1282 CHECK_JNI_ENTRY(kFlag_Default, "Ecm.", env, c, mid); 1283 va_list args; 1284 va_start(args, mid); 1285 jobject result = baseEnv(env)->NewObjectV(env, c, mid, args); 1286 va_end(args); 1287 return CHECK_JNI_EXIT("L", result); 1288 } 1289 1290 static jobject NewObjectV(JNIEnv* env, jclass c, jmethodID mid, va_list args) { 1291 CHECK_JNI_ENTRY(kFlag_Default, "Ecm.", env, c, mid); 1292 return CHECK_JNI_EXIT("L", baseEnv(env)->NewObjectV(env, c, mid, args)); 1293 } 1294 1295 static jobject NewObjectA(JNIEnv* env, jclass c, jmethodID mid, jvalue* args) { 1296 CHECK_JNI_ENTRY(kFlag_Default, "Ecm.", env, c, mid); 1297 return CHECK_JNI_EXIT("L", baseEnv(env)->NewObjectA(env, c, mid, args)); 1298 } 1299 1300 static jclass GetObjectClass(JNIEnv* env, jobject obj) { 1301 CHECK_JNI_ENTRY(kFlag_Default, "EL", env, obj); 1302 return CHECK_JNI_EXIT("c", baseEnv(env)->GetObjectClass(env, obj)); 1303 } 1304 1305 static jboolean IsInstanceOf(JNIEnv* env, jobject obj, jclass c) { 1306 CHECK_JNI_ENTRY(kFlag_Default, "ELc", env, obj, c); 1307 return CHECK_JNI_EXIT("b", baseEnv(env)->IsInstanceOf(env, obj, c)); 1308 } 1309 1310 static jmethodID GetMethodID(JNIEnv* env, jclass c, const char* name, const char* sig) { 1311 CHECK_JNI_ENTRY(kFlag_Default, "Ecuu", env, c, name, sig); 1312 return CHECK_JNI_EXIT("m", baseEnv(env)->GetMethodID(env, c, name, sig)); 1313 } 1314 1315 static jfieldID GetFieldID(JNIEnv* env, jclass c, const char* name, const char* sig) { 1316 CHECK_JNI_ENTRY(kFlag_Default, "Ecuu", env, c, name, sig); 1317 return CHECK_JNI_EXIT("f", baseEnv(env)->GetFieldID(env, c, name, sig)); 1318 } 1319 1320 static jmethodID GetStaticMethodID(JNIEnv* env, jclass c, const char* name, const char* sig) { 1321 CHECK_JNI_ENTRY(kFlag_Default, "Ecuu", env, c, name, sig); 1322 return CHECK_JNI_EXIT("m", baseEnv(env)->GetStaticMethodID(env, c, name, sig)); 1323 } 1324 1325 static jfieldID GetStaticFieldID(JNIEnv* env, jclass c, const char* name, const char* sig) { 1326 CHECK_JNI_ENTRY(kFlag_Default, "Ecuu", env, c, name, sig); 1327 return CHECK_JNI_EXIT("f", baseEnv(env)->GetStaticFieldID(env, c, name, sig)); 1328 } 1329 1330 #define FIELD_ACCESSORS(_ctype, _jname, _type) \ 1331 static _ctype GetStatic##_jname##Field(JNIEnv* env, jclass c, jfieldID fid) { \ 1332 CHECK_JNI_ENTRY(kFlag_Default, "Ecf", env, c, fid); \ 1333 sc.CheckStaticFieldID(c, fid); \ 1334 return CHECK_JNI_EXIT(_type, baseEnv(env)->GetStatic##_jname##Field(env, c, fid)); \ 1335 } \ 1336 static _ctype Get##_jname##Field(JNIEnv* env, jobject obj, jfieldID fid) { \ 1337 CHECK_JNI_ENTRY(kFlag_Default, "ELf", env, obj, fid); \ 1338 sc.CheckInstanceFieldID(obj, fid); \ 1339 return CHECK_JNI_EXIT(_type, baseEnv(env)->Get##_jname##Field(env, obj, fid)); \ 1340 } \ 1341 static void SetStatic##_jname##Field(JNIEnv* env, jclass c, jfieldID fid, _ctype value) { \ 1342 CHECK_JNI_ENTRY(kFlag_Default, "Ecf" _type, env, c, fid, value); \ 1343 sc.CheckStaticFieldID(c, fid); \ 1344 /* "value" arg only used when type == ref */ \ 1345 sc.CheckFieldType((jobject)(uint32_t)value, fid, _type[0], true); \ 1346 baseEnv(env)->SetStatic##_jname##Field(env, c, fid, value); \ 1347 CHECK_JNI_EXIT_VOID(); \ 1348 } \ 1349 static void Set##_jname##Field(JNIEnv* env, jobject obj, jfieldID fid, _ctype value) { \ 1350 CHECK_JNI_ENTRY(kFlag_Default, "ELf" _type, env, obj, fid, value); \ 1351 sc.CheckInstanceFieldID(obj, fid); \ 1352 /* "value" arg only used when type == ref */ \ 1353 sc.CheckFieldType((jobject)(uint32_t) value, fid, _type[0], false); \ 1354 baseEnv(env)->Set##_jname##Field(env, obj, fid, value); \ 1355 CHECK_JNI_EXIT_VOID(); \ 1356 } 1357 1358 FIELD_ACCESSORS(jobject, Object, "L"); 1359 FIELD_ACCESSORS(jboolean, Boolean, "Z"); 1360 FIELD_ACCESSORS(jbyte, Byte, "B"); 1361 FIELD_ACCESSORS(jchar, Char, "C"); 1362 FIELD_ACCESSORS(jshort, Short, "S"); 1363 FIELD_ACCESSORS(jint, Int, "I"); 1364 FIELD_ACCESSORS(jlong, Long, "J"); 1365 FIELD_ACCESSORS(jfloat, Float, "F"); 1366 FIELD_ACCESSORS(jdouble, Double, "D"); 1367 1368 #define CALL(_ctype, _jname, _retdecl, _retasgn, _retok, _retsig) \ 1369 /* Virtual... */ \ 1370 static _ctype Call##_jname##Method(JNIEnv* env, jobject obj, \ 1371 jmethodID mid, ...) \ 1372 { \ 1373 CHECK_JNI_ENTRY(kFlag_Default, "ELm.", env, obj, mid); /* TODO: args! */ \ 1374 sc.CheckSig(mid, _retsig, false); \ 1375 sc.CheckVirtualMethod(obj, mid); \ 1376 _retdecl; \ 1377 va_list args; \ 1378 va_start(args, mid); \ 1379 _retasgn(baseEnv(env)->Call##_jname##MethodV(env, obj, mid, args)); \ 1380 va_end(args); \ 1381 _retok; \ 1382 } \ 1383 static _ctype Call##_jname##MethodV(JNIEnv* env, jobject obj, \ 1384 jmethodID mid, va_list args) \ 1385 { \ 1386 CHECK_JNI_ENTRY(kFlag_Default, "ELm.", env, obj, mid); /* TODO: args! */ \ 1387 sc.CheckSig(mid, _retsig, false); \ 1388 sc.CheckVirtualMethod(obj, mid); \ 1389 _retdecl; \ 1390 _retasgn(baseEnv(env)->Call##_jname##MethodV(env, obj, mid, args)); \ 1391 _retok; \ 1392 } \ 1393 static _ctype Call##_jname##MethodA(JNIEnv* env, jobject obj, \ 1394 jmethodID mid, jvalue* args) \ 1395 { \ 1396 CHECK_JNI_ENTRY(kFlag_Default, "ELm.", env, obj, mid); /* TODO: args! */ \ 1397 sc.CheckSig(mid, _retsig, false); \ 1398 sc.CheckVirtualMethod(obj, mid); \ 1399 _retdecl; \ 1400 _retasgn(baseEnv(env)->Call##_jname##MethodA(env, obj, mid, args)); \ 1401 _retok; \ 1402 } \ 1403 /* Non-virtual... */ \ 1404 static _ctype CallNonvirtual##_jname##Method(JNIEnv* env, \ 1405 jobject obj, jclass c, jmethodID mid, ...) \ 1406 { \ 1407 CHECK_JNI_ENTRY(kFlag_Default, "ELcm.", env, obj, c, mid); /* TODO: args! */ \ 1408 sc.CheckSig(mid, _retsig, false); \ 1409 sc.CheckVirtualMethod(obj, mid); \ 1410 _retdecl; \ 1411 va_list args; \ 1412 va_start(args, mid); \ 1413 _retasgn(baseEnv(env)->CallNonvirtual##_jname##MethodV(env, obj, c, mid, args)); \ 1414 va_end(args); \ 1415 _retok; \ 1416 } \ 1417 static _ctype CallNonvirtual##_jname##MethodV(JNIEnv* env, \ 1418 jobject obj, jclass c, jmethodID mid, va_list args) \ 1419 { \ 1420 CHECK_JNI_ENTRY(kFlag_Default, "ELcm.", env, obj, c, mid); /* TODO: args! */ \ 1421 sc.CheckSig(mid, _retsig, false); \ 1422 sc.CheckVirtualMethod(obj, mid); \ 1423 _retdecl; \ 1424 _retasgn(baseEnv(env)->CallNonvirtual##_jname##MethodV(env, obj, c, mid, args)); \ 1425 _retok; \ 1426 } \ 1427 static _ctype CallNonvirtual##_jname##MethodA(JNIEnv* env, \ 1428 jobject obj, jclass c, jmethodID mid, jvalue* args) \ 1429 { \ 1430 CHECK_JNI_ENTRY(kFlag_Default, "ELcm.", env, obj, c, mid); /* TODO: args! */ \ 1431 sc.CheckSig(mid, _retsig, false); \ 1432 sc.CheckVirtualMethod(obj, mid); \ 1433 _retdecl; \ 1434 _retasgn(baseEnv(env)->CallNonvirtual##_jname##MethodA(env, obj, c, mid, args)); \ 1435 _retok; \ 1436 } \ 1437 /* Static... */ \ 1438 static _ctype CallStatic##_jname##Method(JNIEnv* env, jclass c, jmethodID mid, ...) \ 1439 { \ 1440 CHECK_JNI_ENTRY(kFlag_Default, "Ecm.", env, c, mid); /* TODO: args! */ \ 1441 sc.CheckSig(mid, _retsig, true); \ 1442 sc.CheckStaticMethod(c, mid); \ 1443 _retdecl; \ 1444 va_list args; \ 1445 va_start(args, mid); \ 1446 _retasgn(baseEnv(env)->CallStatic##_jname##MethodV(env, c, mid, args)); \ 1447 va_end(args); \ 1448 _retok; \ 1449 } \ 1450 static _ctype CallStatic##_jname##MethodV(JNIEnv* env, jclass c, jmethodID mid, va_list args) \ 1451 { \ 1452 CHECK_JNI_ENTRY(kFlag_Default, "Ecm.", env, c, mid); /* TODO: args! */ \ 1453 sc.CheckSig(mid, _retsig, true); \ 1454 sc.CheckStaticMethod(c, mid); \ 1455 _retdecl; \ 1456 _retasgn(baseEnv(env)->CallStatic##_jname##MethodV(env, c, mid, args)); \ 1457 _retok; \ 1458 } \ 1459 static _ctype CallStatic##_jname##MethodA(JNIEnv* env, jclass c, jmethodID mid, jvalue* args) \ 1460 { \ 1461 CHECK_JNI_ENTRY(kFlag_Default, "Ecm.", env, c, mid); /* TODO: args! */ \ 1462 sc.CheckSig(mid, _retsig, true); \ 1463 sc.CheckStaticMethod(c, mid); \ 1464 _retdecl; \ 1465 _retasgn(baseEnv(env)->CallStatic##_jname##MethodA(env, c, mid, args)); \ 1466 _retok; \ 1467 } 1468 1469 #define NON_VOID_RETURN(_retsig, _ctype) return CHECK_JNI_EXIT(_retsig, (_ctype) result) 1470 #define VOID_RETURN CHECK_JNI_EXIT_VOID() 1471 1472 CALL(jobject, Object, mirror::Object* result, result = reinterpret_cast<mirror::Object*>, NON_VOID_RETURN("L", jobject), "L"); 1473 CALL(jboolean, Boolean, jboolean result, result =, NON_VOID_RETURN("Z", jboolean), "Z"); 1474 CALL(jbyte, Byte, jbyte result, result =, NON_VOID_RETURN("B", jbyte), "B"); 1475 CALL(jchar, Char, jchar result, result =, NON_VOID_RETURN("C", jchar), "C"); 1476 CALL(jshort, Short, jshort result, result =, NON_VOID_RETURN("S", jshort), "S"); 1477 CALL(jint, Int, jint result, result =, NON_VOID_RETURN("I", jint), "I"); 1478 CALL(jlong, Long, jlong result, result =, NON_VOID_RETURN("J", jlong), "J"); 1479 CALL(jfloat, Float, jfloat result, result =, NON_VOID_RETURN("F", jfloat), "F"); 1480 CALL(jdouble, Double, jdouble result, result =, NON_VOID_RETURN("D", jdouble), "D"); 1481 CALL(void, Void, , , VOID_RETURN, "V"); 1482 1483 static jstring NewString(JNIEnv* env, const jchar* unicodeChars, jsize len) { 1484 CHECK_JNI_ENTRY(kFlag_Default, "Epz", env, unicodeChars, len); 1485 return CHECK_JNI_EXIT("s", baseEnv(env)->NewString(env, unicodeChars, len)); 1486 } 1487 1488 static jsize GetStringLength(JNIEnv* env, jstring string) { 1489 CHECK_JNI_ENTRY(kFlag_CritOkay, "Es", env, string); 1490 return CHECK_JNI_EXIT("I", baseEnv(env)->GetStringLength(env, string)); 1491 } 1492 1493 static const jchar* GetStringChars(JNIEnv* env, jstring java_string, jboolean* isCopy) { 1494 CHECK_JNI_ENTRY(kFlag_CritOkay, "Esp", env, java_string, isCopy); 1495 const jchar* result = baseEnv(env)->GetStringChars(env, java_string, isCopy); 1496 if (sc.ForceCopy() && result != NULL) { 1497 mirror::String* s = sc.soa().Decode<mirror::String*>(java_string); 1498 int byteCount = s->GetLength() * 2; 1499 result = (const jchar*) GuardedCopy::Create(result, byteCount, false); 1500 if (isCopy != NULL) { 1501 *isCopy = JNI_TRUE; 1502 } 1503 } 1504 return CHECK_JNI_EXIT("p", result); 1505 } 1506 1507 static void ReleaseStringChars(JNIEnv* env, jstring string, const jchar* chars) { 1508 CHECK_JNI_ENTRY(kFlag_Default | kFlag_ExcepOkay, "Esp", env, string, chars); 1509 sc.CheckNonNull(chars); 1510 if (sc.ForceCopy()) { 1511 GuardedCopy::Check(__FUNCTION__, chars, false); 1512 chars = reinterpret_cast<const jchar*>(GuardedCopy::Destroy(const_cast<jchar*>(chars))); 1513 } 1514 baseEnv(env)->ReleaseStringChars(env, string, chars); 1515 CHECK_JNI_EXIT_VOID(); 1516 } 1517 1518 static jstring NewStringUTF(JNIEnv* env, const char* bytes) { 1519 CHECK_JNI_ENTRY(kFlag_NullableUtf, "Eu", env, bytes); // TODO: show pointer and truncate string. 1520 return CHECK_JNI_EXIT("s", baseEnv(env)->NewStringUTF(env, bytes)); 1521 } 1522 1523 static jsize GetStringUTFLength(JNIEnv* env, jstring string) { 1524 CHECK_JNI_ENTRY(kFlag_CritOkay, "Es", env, string); 1525 return CHECK_JNI_EXIT("I", baseEnv(env)->GetStringUTFLength(env, string)); 1526 } 1527 1528 static const char* GetStringUTFChars(JNIEnv* env, jstring string, jboolean* isCopy) { 1529 CHECK_JNI_ENTRY(kFlag_CritOkay, "Esp", env, string, isCopy); 1530 const char* result = baseEnv(env)->GetStringUTFChars(env, string, isCopy); 1531 if (sc.ForceCopy() && result != NULL) { 1532 result = (const char*) GuardedCopy::Create(result, strlen(result) + 1, false); 1533 if (isCopy != NULL) { 1534 *isCopy = JNI_TRUE; 1535 } 1536 } 1537 return CHECK_JNI_EXIT("u", result); // TODO: show pointer and truncate string. 1538 } 1539 1540 static void ReleaseStringUTFChars(JNIEnv* env, jstring string, const char* utf) { 1541 CHECK_JNI_ENTRY(kFlag_ExcepOkay | kFlag_Release, "Esu", env, string, utf); // TODO: show pointer and truncate string. 1542 if (sc.ForceCopy()) { 1543 GuardedCopy::Check(__FUNCTION__, utf, false); 1544 utf = reinterpret_cast<const char*>(GuardedCopy::Destroy(const_cast<char*>(utf))); 1545 } 1546 baseEnv(env)->ReleaseStringUTFChars(env, string, utf); 1547 CHECK_JNI_EXIT_VOID(); 1548 } 1549 1550 static jsize GetArrayLength(JNIEnv* env, jarray array) { 1551 CHECK_JNI_ENTRY(kFlag_CritOkay, "Ea", env, array); 1552 return CHECK_JNI_EXIT("I", baseEnv(env)->GetArrayLength(env, array)); 1553 } 1554 1555 static jobjectArray NewObjectArray(JNIEnv* env, jsize length, jclass elementClass, jobject initialElement) { 1556 CHECK_JNI_ENTRY(kFlag_Default, "EzcL", env, length, elementClass, initialElement); 1557 return CHECK_JNI_EXIT("a", baseEnv(env)->NewObjectArray(env, length, elementClass, initialElement)); 1558 } 1559 1560 static jobject GetObjectArrayElement(JNIEnv* env, jobjectArray array, jsize index) { 1561 CHECK_JNI_ENTRY(kFlag_Default, "EaI", env, array, index); 1562 return CHECK_JNI_EXIT("L", baseEnv(env)->GetObjectArrayElement(env, array, index)); 1563 } 1564 1565 static void SetObjectArrayElement(JNIEnv* env, jobjectArray array, jsize index, jobject value) { 1566 CHECK_JNI_ENTRY(kFlag_Default, "EaIL", env, array, index, value); 1567 baseEnv(env)->SetObjectArrayElement(env, array, index, value); 1568 CHECK_JNI_EXIT_VOID(); 1569 } 1570 1571 #define NEW_PRIMITIVE_ARRAY(_artype, _jname) \ 1572 static _artype New##_jname##Array(JNIEnv* env, jsize length) { \ 1573 CHECK_JNI_ENTRY(kFlag_Default, "Ez", env, length); \ 1574 return CHECK_JNI_EXIT("a", baseEnv(env)->New##_jname##Array(env, length)); \ 1575 } 1576 NEW_PRIMITIVE_ARRAY(jbooleanArray, Boolean); 1577 NEW_PRIMITIVE_ARRAY(jbyteArray, Byte); 1578 NEW_PRIMITIVE_ARRAY(jcharArray, Char); 1579 NEW_PRIMITIVE_ARRAY(jshortArray, Short); 1580 NEW_PRIMITIVE_ARRAY(jintArray, Int); 1581 NEW_PRIMITIVE_ARRAY(jlongArray, Long); 1582 NEW_PRIMITIVE_ARRAY(jfloatArray, Float); 1583 NEW_PRIMITIVE_ARRAY(jdoubleArray, Double); 1584 1585 struct ForceCopyGetChecker { 1586 public: 1587 ForceCopyGetChecker(ScopedCheck& sc, jboolean* isCopy) { 1588 force_copy = sc.ForceCopy(); 1589 no_copy = 0; 1590 if (force_copy && isCopy != NULL) { 1591 // Capture this before the base call tramples on it. 1592 no_copy = *reinterpret_cast<uint32_t*>(isCopy); 1593 } 1594 } 1595 1596 template<typename ResultT> 1597 ResultT Check(JNIEnv* env, jarray array, jboolean* isCopy, ResultT result) { 1598 if (force_copy && result != NULL) { 1599 if (no_copy != kNoCopyMagic) { 1600 result = reinterpret_cast<ResultT>(CreateGuardedPACopy(env, array, isCopy)); 1601 } 1602 } 1603 return result; 1604 } 1605 1606 uint32_t no_copy; 1607 bool force_copy; 1608 }; 1609 1610 #define GET_PRIMITIVE_ARRAY_ELEMENTS(_ctype, _jname) \ 1611 static _ctype* Get##_jname##ArrayElements(JNIEnv* env, _ctype##Array array, jboolean* isCopy) { \ 1612 CHECK_JNI_ENTRY(kFlag_Default, "Eap", env, array, isCopy); \ 1613 _ctype* result = ForceCopyGetChecker(sc, isCopy).Check(env, array, isCopy, baseEnv(env)->Get##_jname##ArrayElements(env, array, isCopy)); \ 1614 return CHECK_JNI_EXIT("p", result); \ 1615 } 1616 1617 #define RELEASE_PRIMITIVE_ARRAY_ELEMENTS(_ctype, _jname) \ 1618 static void Release##_jname##ArrayElements(JNIEnv* env, _ctype##Array array, _ctype* elems, jint mode) { \ 1619 CHECK_JNI_ENTRY(kFlag_Default | kFlag_ExcepOkay, "Eapr", env, array, elems, mode); \ 1620 sc.CheckNonNull(elems); \ 1621 if (sc.ForceCopy()) { \ 1622 ReleaseGuardedPACopy(env, array, elems, mode); \ 1623 } \ 1624 baseEnv(env)->Release##_jname##ArrayElements(env, array, elems, mode); \ 1625 CHECK_JNI_EXIT_VOID(); \ 1626 } 1627 1628 #define GET_PRIMITIVE_ARRAY_REGION(_ctype, _jname) \ 1629 static void Get##_jname##ArrayRegion(JNIEnv* env, _ctype##Array array, jsize start, jsize len, _ctype* buf) { \ 1630 CHECK_JNI_ENTRY(kFlag_Default, "EaIIp", env, array, start, len, buf); \ 1631 baseEnv(env)->Get##_jname##ArrayRegion(env, array, start, len, buf); \ 1632 CHECK_JNI_EXIT_VOID(); \ 1633 } 1634 1635 #define SET_PRIMITIVE_ARRAY_REGION(_ctype, _jname) \ 1636 static void Set##_jname##ArrayRegion(JNIEnv* env, _ctype##Array array, jsize start, jsize len, const _ctype* buf) { \ 1637 CHECK_JNI_ENTRY(kFlag_Default, "EaIIp", env, array, start, len, buf); \ 1638 baseEnv(env)->Set##_jname##ArrayRegion(env, array, start, len, buf); \ 1639 CHECK_JNI_EXIT_VOID(); \ 1640 } 1641 1642 #define PRIMITIVE_ARRAY_FUNCTIONS(_ctype, _jname, _typechar) \ 1643 GET_PRIMITIVE_ARRAY_ELEMENTS(_ctype, _jname); \ 1644 RELEASE_PRIMITIVE_ARRAY_ELEMENTS(_ctype, _jname); \ 1645 GET_PRIMITIVE_ARRAY_REGION(_ctype, _jname); \ 1646 SET_PRIMITIVE_ARRAY_REGION(_ctype, _jname); 1647 1648 // TODO: verify primitive array type matches call type. 1649 PRIMITIVE_ARRAY_FUNCTIONS(jboolean, Boolean, 'Z'); 1650 PRIMITIVE_ARRAY_FUNCTIONS(jbyte, Byte, 'B'); 1651 PRIMITIVE_ARRAY_FUNCTIONS(jchar, Char, 'C'); 1652 PRIMITIVE_ARRAY_FUNCTIONS(jshort, Short, 'S'); 1653 PRIMITIVE_ARRAY_FUNCTIONS(jint, Int, 'I'); 1654 PRIMITIVE_ARRAY_FUNCTIONS(jlong, Long, 'J'); 1655 PRIMITIVE_ARRAY_FUNCTIONS(jfloat, Float, 'F'); 1656 PRIMITIVE_ARRAY_FUNCTIONS(jdouble, Double, 'D'); 1657 1658 static jint RegisterNatives(JNIEnv* env, jclass c, const JNINativeMethod* methods, jint nMethods) { 1659 CHECK_JNI_ENTRY(kFlag_Default, "EcpI", env, c, methods, nMethods); 1660 return CHECK_JNI_EXIT("I", baseEnv(env)->RegisterNatives(env, c, methods, nMethods)); 1661 } 1662 1663 static jint UnregisterNatives(JNIEnv* env, jclass c) { 1664 CHECK_JNI_ENTRY(kFlag_Default, "Ec", env, c); 1665 return CHECK_JNI_EXIT("I", baseEnv(env)->UnregisterNatives(env, c)); 1666 } 1667 1668 static jint MonitorEnter(JNIEnv* env, jobject obj) { 1669 CHECK_JNI_ENTRY(kFlag_Default, "EL", env, obj); 1670 if (!sc.CheckInstance(ScopedCheck::kObject, obj)) { 1671 return JNI_ERR; // Only for jni_internal_test. Real code will have aborted already. 1672 } 1673 return CHECK_JNI_EXIT("I", baseEnv(env)->MonitorEnter(env, obj)); 1674 } 1675 1676 static jint MonitorExit(JNIEnv* env, jobject obj) { 1677 CHECK_JNI_ENTRY(kFlag_Default | kFlag_ExcepOkay, "EL", env, obj); 1678 if (!sc.CheckInstance(ScopedCheck::kObject, obj)) { 1679 return JNI_ERR; // Only for jni_internal_test. Real code will have aborted already. 1680 } 1681 return CHECK_JNI_EXIT("I", baseEnv(env)->MonitorExit(env, obj)); 1682 } 1683 1684 static jint GetJavaVM(JNIEnv *env, JavaVM **vm) { 1685 CHECK_JNI_ENTRY(kFlag_Default, "Ep", env, vm); 1686 return CHECK_JNI_EXIT("I", baseEnv(env)->GetJavaVM(env, vm)); 1687 } 1688 1689 static void GetStringRegion(JNIEnv* env, jstring str, jsize start, jsize len, jchar* buf) { 1690 CHECK_JNI_ENTRY(kFlag_CritOkay, "EsIIp", env, str, start, len, buf); 1691 baseEnv(env)->GetStringRegion(env, str, start, len, buf); 1692 CHECK_JNI_EXIT_VOID(); 1693 } 1694 1695 static void GetStringUTFRegion(JNIEnv* env, jstring str, jsize start, jsize len, char* buf) { 1696 CHECK_JNI_ENTRY(kFlag_CritOkay, "EsIIp", env, str, start, len, buf); 1697 baseEnv(env)->GetStringUTFRegion(env, str, start, len, buf); 1698 CHECK_JNI_EXIT_VOID(); 1699 } 1700 1701 static void* GetPrimitiveArrayCritical(JNIEnv* env, jarray array, jboolean* isCopy) { 1702 CHECK_JNI_ENTRY(kFlag_CritGet, "Eap", env, array, isCopy); 1703 void* result = baseEnv(env)->GetPrimitiveArrayCritical(env, array, isCopy); 1704 if (sc.ForceCopy() && result != NULL) { 1705 result = CreateGuardedPACopy(env, array, isCopy); 1706 } 1707 return CHECK_JNI_EXIT("p", result); 1708 } 1709 1710 static void ReleasePrimitiveArrayCritical(JNIEnv* env, jarray array, void* carray, jint mode) { 1711 CHECK_JNI_ENTRY(kFlag_CritRelease | kFlag_ExcepOkay, "Eapr", env, array, carray, mode); 1712 sc.CheckNonNull(carray); 1713 if (sc.ForceCopy()) { 1714 ReleaseGuardedPACopy(env, array, carray, mode); 1715 } 1716 baseEnv(env)->ReleasePrimitiveArrayCritical(env, array, carray, mode); 1717 CHECK_JNI_EXIT_VOID(); 1718 } 1719 1720 static const jchar* GetStringCritical(JNIEnv* env, jstring java_string, jboolean* isCopy) { 1721 CHECK_JNI_ENTRY(kFlag_CritGet, "Esp", env, java_string, isCopy); 1722 const jchar* result = baseEnv(env)->GetStringCritical(env, java_string, isCopy); 1723 if (sc.ForceCopy() && result != NULL) { 1724 mirror::String* s = sc.soa().Decode<mirror::String*>(java_string); 1725 int byteCount = s->GetLength() * 2; 1726 result = (const jchar*) GuardedCopy::Create(result, byteCount, false); 1727 if (isCopy != NULL) { 1728 *isCopy = JNI_TRUE; 1729 } 1730 } 1731 return CHECK_JNI_EXIT("p", result); 1732 } 1733 1734 static void ReleaseStringCritical(JNIEnv* env, jstring string, const jchar* carray) { 1735 CHECK_JNI_ENTRY(kFlag_CritRelease | kFlag_ExcepOkay, "Esp", env, string, carray); 1736 sc.CheckNonNull(carray); 1737 if (sc.ForceCopy()) { 1738 GuardedCopy::Check(__FUNCTION__, carray, false); 1739 carray = reinterpret_cast<const jchar*>(GuardedCopy::Destroy(const_cast<jchar*>(carray))); 1740 } 1741 baseEnv(env)->ReleaseStringCritical(env, string, carray); 1742 CHECK_JNI_EXIT_VOID(); 1743 } 1744 1745 static jweak NewWeakGlobalRef(JNIEnv* env, jobject obj) { 1746 CHECK_JNI_ENTRY(kFlag_Default, "EL", env, obj); 1747 return CHECK_JNI_EXIT("L", baseEnv(env)->NewWeakGlobalRef(env, obj)); 1748 } 1749 1750 static jboolean ExceptionCheck(JNIEnv* env) { 1751 CHECK_JNI_ENTRY(kFlag_CritOkay | kFlag_ExcepOkay, "E", env); 1752 return CHECK_JNI_EXIT("b", baseEnv(env)->ExceptionCheck(env)); 1753 } 1754 1755 static jobjectRefType GetObjectRefType(JNIEnv* env, jobject obj) { 1756 // Note: we use "Ep" rather than "EL" because this is the one JNI function 1757 // that it's okay to pass an invalid reference to. 1758 CHECK_JNI_ENTRY(kFlag_Default, "Ep", env, obj); 1759 // TODO: proper decoding of jobjectRefType! 1760 return CHECK_JNI_EXIT("I", baseEnv(env)->GetObjectRefType(env, obj)); 1761 } 1762 1763 static jobject NewDirectByteBuffer(JNIEnv* env, void* address, jlong capacity) { 1764 CHECK_JNI_ENTRY(kFlag_Default, "EpJ", env, address, capacity); 1765 if (address == NULL) { 1766 JniAbortF(__FUNCTION__, "non-nullable address is NULL"); 1767 } 1768 if (capacity <= 0) { 1769 JniAbortF(__FUNCTION__, "capacity must be greater than 0: %lld", capacity); 1770 } 1771 return CHECK_JNI_EXIT("L", baseEnv(env)->NewDirectByteBuffer(env, address, capacity)); 1772 } 1773 1774 static void* GetDirectBufferAddress(JNIEnv* env, jobject buf) { 1775 CHECK_JNI_ENTRY(kFlag_Default, "EL", env, buf); 1776 // TODO: check that 'buf' is a java.nio.Buffer. 1777 return CHECK_JNI_EXIT("p", baseEnv(env)->GetDirectBufferAddress(env, buf)); 1778 } 1779 1780 static jlong GetDirectBufferCapacity(JNIEnv* env, jobject buf) { 1781 CHECK_JNI_ENTRY(kFlag_Default, "EL", env, buf); 1782 // TODO: check that 'buf' is a java.nio.Buffer. 1783 return CHECK_JNI_EXIT("J", baseEnv(env)->GetDirectBufferCapacity(env, buf)); 1784 } 1785 1786 private: 1787 static inline const JNINativeInterface* baseEnv(JNIEnv* env) { 1788 return reinterpret_cast<JNIEnvExt*>(env)->unchecked_functions; 1789 } 1790 }; 1791 1792 const JNINativeInterface gCheckNativeInterface = { 1793 NULL, // reserved0. 1794 NULL, // reserved1. 1795 NULL, // reserved2. 1796 NULL, // reserved3. 1797 CheckJNI::GetVersion, 1798 CheckJNI::DefineClass, 1799 CheckJNI::FindClass, 1800 CheckJNI::FromReflectedMethod, 1801 CheckJNI::FromReflectedField, 1802 CheckJNI::ToReflectedMethod, 1803 CheckJNI::GetSuperclass, 1804 CheckJNI::IsAssignableFrom, 1805 CheckJNI::ToReflectedField, 1806 CheckJNI::Throw, 1807 CheckJNI::ThrowNew, 1808 CheckJNI::ExceptionOccurred, 1809 CheckJNI::ExceptionDescribe, 1810 CheckJNI::ExceptionClear, 1811 CheckJNI::FatalError, 1812 CheckJNI::PushLocalFrame, 1813 CheckJNI::PopLocalFrame, 1814 CheckJNI::NewGlobalRef, 1815 CheckJNI::DeleteGlobalRef, 1816 CheckJNI::DeleteLocalRef, 1817 CheckJNI::IsSameObject, 1818 CheckJNI::NewLocalRef, 1819 CheckJNI::EnsureLocalCapacity, 1820 CheckJNI::AllocObject, 1821 CheckJNI::NewObject, 1822 CheckJNI::NewObjectV, 1823 CheckJNI::NewObjectA, 1824 CheckJNI::GetObjectClass, 1825 CheckJNI::IsInstanceOf, 1826 CheckJNI::GetMethodID, 1827 CheckJNI::CallObjectMethod, 1828 CheckJNI::CallObjectMethodV, 1829 CheckJNI::CallObjectMethodA, 1830 CheckJNI::CallBooleanMethod, 1831 CheckJNI::CallBooleanMethodV, 1832 CheckJNI::CallBooleanMethodA, 1833 CheckJNI::CallByteMethod, 1834 CheckJNI::CallByteMethodV, 1835 CheckJNI::CallByteMethodA, 1836 CheckJNI::CallCharMethod, 1837 CheckJNI::CallCharMethodV, 1838 CheckJNI::CallCharMethodA, 1839 CheckJNI::CallShortMethod, 1840 CheckJNI::CallShortMethodV, 1841 CheckJNI::CallShortMethodA, 1842 CheckJNI::CallIntMethod, 1843 CheckJNI::CallIntMethodV, 1844 CheckJNI::CallIntMethodA, 1845 CheckJNI::CallLongMethod, 1846 CheckJNI::CallLongMethodV, 1847 CheckJNI::CallLongMethodA, 1848 CheckJNI::CallFloatMethod, 1849 CheckJNI::CallFloatMethodV, 1850 CheckJNI::CallFloatMethodA, 1851 CheckJNI::CallDoubleMethod, 1852 CheckJNI::CallDoubleMethodV, 1853 CheckJNI::CallDoubleMethodA, 1854 CheckJNI::CallVoidMethod, 1855 CheckJNI::CallVoidMethodV, 1856 CheckJNI::CallVoidMethodA, 1857 CheckJNI::CallNonvirtualObjectMethod, 1858 CheckJNI::CallNonvirtualObjectMethodV, 1859 CheckJNI::CallNonvirtualObjectMethodA, 1860 CheckJNI::CallNonvirtualBooleanMethod, 1861 CheckJNI::CallNonvirtualBooleanMethodV, 1862 CheckJNI::CallNonvirtualBooleanMethodA, 1863 CheckJNI::CallNonvirtualByteMethod, 1864 CheckJNI::CallNonvirtualByteMethodV, 1865 CheckJNI::CallNonvirtualByteMethodA, 1866 CheckJNI::CallNonvirtualCharMethod, 1867 CheckJNI::CallNonvirtualCharMethodV, 1868 CheckJNI::CallNonvirtualCharMethodA, 1869 CheckJNI::CallNonvirtualShortMethod, 1870 CheckJNI::CallNonvirtualShortMethodV, 1871 CheckJNI::CallNonvirtualShortMethodA, 1872 CheckJNI::CallNonvirtualIntMethod, 1873 CheckJNI::CallNonvirtualIntMethodV, 1874 CheckJNI::CallNonvirtualIntMethodA, 1875 CheckJNI::CallNonvirtualLongMethod, 1876 CheckJNI::CallNonvirtualLongMethodV, 1877 CheckJNI::CallNonvirtualLongMethodA, 1878 CheckJNI::CallNonvirtualFloatMethod, 1879 CheckJNI::CallNonvirtualFloatMethodV, 1880 CheckJNI::CallNonvirtualFloatMethodA, 1881 CheckJNI::CallNonvirtualDoubleMethod, 1882 CheckJNI::CallNonvirtualDoubleMethodV, 1883 CheckJNI::CallNonvirtualDoubleMethodA, 1884 CheckJNI::CallNonvirtualVoidMethod, 1885 CheckJNI::CallNonvirtualVoidMethodV, 1886 CheckJNI::CallNonvirtualVoidMethodA, 1887 CheckJNI::GetFieldID, 1888 CheckJNI::GetObjectField, 1889 CheckJNI::GetBooleanField, 1890 CheckJNI::GetByteField, 1891 CheckJNI::GetCharField, 1892 CheckJNI::GetShortField, 1893 CheckJNI::GetIntField, 1894 CheckJNI::GetLongField, 1895 CheckJNI::GetFloatField, 1896 CheckJNI::GetDoubleField, 1897 CheckJNI::SetObjectField, 1898 CheckJNI::SetBooleanField, 1899 CheckJNI::SetByteField, 1900 CheckJNI::SetCharField, 1901 CheckJNI::SetShortField, 1902 CheckJNI::SetIntField, 1903 CheckJNI::SetLongField, 1904 CheckJNI::SetFloatField, 1905 CheckJNI::SetDoubleField, 1906 CheckJNI::GetStaticMethodID, 1907 CheckJNI::CallStaticObjectMethod, 1908 CheckJNI::CallStaticObjectMethodV, 1909 CheckJNI::CallStaticObjectMethodA, 1910 CheckJNI::CallStaticBooleanMethod, 1911 CheckJNI::CallStaticBooleanMethodV, 1912 CheckJNI::CallStaticBooleanMethodA, 1913 CheckJNI::CallStaticByteMethod, 1914 CheckJNI::CallStaticByteMethodV, 1915 CheckJNI::CallStaticByteMethodA, 1916 CheckJNI::CallStaticCharMethod, 1917 CheckJNI::CallStaticCharMethodV, 1918 CheckJNI::CallStaticCharMethodA, 1919 CheckJNI::CallStaticShortMethod, 1920 CheckJNI::CallStaticShortMethodV, 1921 CheckJNI::CallStaticShortMethodA, 1922 CheckJNI::CallStaticIntMethod, 1923 CheckJNI::CallStaticIntMethodV, 1924 CheckJNI::CallStaticIntMethodA, 1925 CheckJNI::CallStaticLongMethod, 1926 CheckJNI::CallStaticLongMethodV, 1927 CheckJNI::CallStaticLongMethodA, 1928 CheckJNI::CallStaticFloatMethod, 1929 CheckJNI::CallStaticFloatMethodV, 1930 CheckJNI::CallStaticFloatMethodA, 1931 CheckJNI::CallStaticDoubleMethod, 1932 CheckJNI::CallStaticDoubleMethodV, 1933 CheckJNI::CallStaticDoubleMethodA, 1934 CheckJNI::CallStaticVoidMethod, 1935 CheckJNI::CallStaticVoidMethodV, 1936 CheckJNI::CallStaticVoidMethodA, 1937 CheckJNI::GetStaticFieldID, 1938 CheckJNI::GetStaticObjectField, 1939 CheckJNI::GetStaticBooleanField, 1940 CheckJNI::GetStaticByteField, 1941 CheckJNI::GetStaticCharField, 1942 CheckJNI::GetStaticShortField, 1943 CheckJNI::GetStaticIntField, 1944 CheckJNI::GetStaticLongField, 1945 CheckJNI::GetStaticFloatField, 1946 CheckJNI::GetStaticDoubleField, 1947 CheckJNI::SetStaticObjectField, 1948 CheckJNI::SetStaticBooleanField, 1949 CheckJNI::SetStaticByteField, 1950 CheckJNI::SetStaticCharField, 1951 CheckJNI::SetStaticShortField, 1952 CheckJNI::SetStaticIntField, 1953 CheckJNI::SetStaticLongField, 1954 CheckJNI::SetStaticFloatField, 1955 CheckJNI::SetStaticDoubleField, 1956 CheckJNI::NewString, 1957 CheckJNI::GetStringLength, 1958 CheckJNI::GetStringChars, 1959 CheckJNI::ReleaseStringChars, 1960 CheckJNI::NewStringUTF, 1961 CheckJNI::GetStringUTFLength, 1962 CheckJNI::GetStringUTFChars, 1963 CheckJNI::ReleaseStringUTFChars, 1964 CheckJNI::GetArrayLength, 1965 CheckJNI::NewObjectArray, 1966 CheckJNI::GetObjectArrayElement, 1967 CheckJNI::SetObjectArrayElement, 1968 CheckJNI::NewBooleanArray, 1969 CheckJNI::NewByteArray, 1970 CheckJNI::NewCharArray, 1971 CheckJNI::NewShortArray, 1972 CheckJNI::NewIntArray, 1973 CheckJNI::NewLongArray, 1974 CheckJNI::NewFloatArray, 1975 CheckJNI::NewDoubleArray, 1976 CheckJNI::GetBooleanArrayElements, 1977 CheckJNI::GetByteArrayElements, 1978 CheckJNI::GetCharArrayElements, 1979 CheckJNI::GetShortArrayElements, 1980 CheckJNI::GetIntArrayElements, 1981 CheckJNI::GetLongArrayElements, 1982 CheckJNI::GetFloatArrayElements, 1983 CheckJNI::GetDoubleArrayElements, 1984 CheckJNI::ReleaseBooleanArrayElements, 1985 CheckJNI::ReleaseByteArrayElements, 1986 CheckJNI::ReleaseCharArrayElements, 1987 CheckJNI::ReleaseShortArrayElements, 1988 CheckJNI::ReleaseIntArrayElements, 1989 CheckJNI::ReleaseLongArrayElements, 1990 CheckJNI::ReleaseFloatArrayElements, 1991 CheckJNI::ReleaseDoubleArrayElements, 1992 CheckJNI::GetBooleanArrayRegion, 1993 CheckJNI::GetByteArrayRegion, 1994 CheckJNI::GetCharArrayRegion, 1995 CheckJNI::GetShortArrayRegion, 1996 CheckJNI::GetIntArrayRegion, 1997 CheckJNI::GetLongArrayRegion, 1998 CheckJNI::GetFloatArrayRegion, 1999 CheckJNI::GetDoubleArrayRegion, 2000 CheckJNI::SetBooleanArrayRegion, 2001 CheckJNI::SetByteArrayRegion, 2002 CheckJNI::SetCharArrayRegion, 2003 CheckJNI::SetShortArrayRegion, 2004 CheckJNI::SetIntArrayRegion, 2005 CheckJNI::SetLongArrayRegion, 2006 CheckJNI::SetFloatArrayRegion, 2007 CheckJNI::SetDoubleArrayRegion, 2008 CheckJNI::RegisterNatives, 2009 CheckJNI::UnregisterNatives, 2010 CheckJNI::MonitorEnter, 2011 CheckJNI::MonitorExit, 2012 CheckJNI::GetJavaVM, 2013 CheckJNI::GetStringRegion, 2014 CheckJNI::GetStringUTFRegion, 2015 CheckJNI::GetPrimitiveArrayCritical, 2016 CheckJNI::ReleasePrimitiveArrayCritical, 2017 CheckJNI::GetStringCritical, 2018 CheckJNI::ReleaseStringCritical, 2019 CheckJNI::NewWeakGlobalRef, 2020 CheckJNI::DeleteWeakGlobalRef, 2021 CheckJNI::ExceptionCheck, 2022 CheckJNI::NewDirectByteBuffer, 2023 CheckJNI::GetDirectBufferAddress, 2024 CheckJNI::GetDirectBufferCapacity, 2025 CheckJNI::GetObjectRefType, 2026 }; 2027 2028 const JNINativeInterface* GetCheckJniNativeInterface() { 2029 return &gCheckNativeInterface; 2030 } 2031 2032 class CheckJII { 2033 public: 2034 static jint DestroyJavaVM(JavaVM* vm) { 2035 ScopedCheck sc(vm, false, __FUNCTION__); 2036 sc.Check(true, "v", vm); 2037 return CHECK_JNI_EXIT("I", BaseVm(vm)->DestroyJavaVM(vm)); 2038 } 2039 2040 static jint AttachCurrentThread(JavaVM* vm, JNIEnv** p_env, void* thr_args) { 2041 ScopedCheck sc(vm, false, __FUNCTION__); 2042 sc.Check(true, "vpp", vm, p_env, thr_args); 2043 return CHECK_JNI_EXIT("I", BaseVm(vm)->AttachCurrentThread(vm, p_env, thr_args)); 2044 } 2045 2046 static jint AttachCurrentThreadAsDaemon(JavaVM* vm, JNIEnv** p_env, void* thr_args) { 2047 ScopedCheck sc(vm, false, __FUNCTION__); 2048 sc.Check(true, "vpp", vm, p_env, thr_args); 2049 return CHECK_JNI_EXIT("I", BaseVm(vm)->AttachCurrentThreadAsDaemon(vm, p_env, thr_args)); 2050 } 2051 2052 static jint DetachCurrentThread(JavaVM* vm) { 2053 ScopedCheck sc(vm, true, __FUNCTION__); 2054 sc.Check(true, "v", vm); 2055 return CHECK_JNI_EXIT("I", BaseVm(vm)->DetachCurrentThread(vm)); 2056 } 2057 2058 static jint GetEnv(JavaVM* vm, void** env, jint version) { 2059 ScopedCheck sc(vm, true, __FUNCTION__); 2060 sc.Check(true, "vpI", vm); 2061 return CHECK_JNI_EXIT("I", BaseVm(vm)->GetEnv(vm, env, version)); 2062 } 2063 2064 private: 2065 static inline const JNIInvokeInterface* BaseVm(JavaVM* vm) { 2066 return reinterpret_cast<JavaVMExt*>(vm)->unchecked_functions; 2067 } 2068 }; 2069 2070 const JNIInvokeInterface gCheckInvokeInterface = { 2071 NULL, // reserved0 2072 NULL, // reserved1 2073 NULL, // reserved2 2074 CheckJII::DestroyJavaVM, 2075 CheckJII::AttachCurrentThread, 2076 CheckJII::DetachCurrentThread, 2077 CheckJII::GetEnv, 2078 CheckJII::AttachCurrentThreadAsDaemon 2079 }; 2080 2081 const JNIInvokeInterface* GetCheckJniInvokeInterface() { 2082 return &gCheckInvokeInterface; 2083 } 2084 2085 } // namespace art 2086
