| /* |
| * Copyright (C) 2011 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include "jni_internal.h" |
| |
| #include <dlfcn.h> |
| |
| #include <cstdarg> |
| #include <memory> |
| #include <utility> |
| #include <vector> |
| |
| #include "atomic.h" |
| #include "base/logging.h" |
| #include "base/mutex.h" |
| #include "base/stl_util.h" |
| #include "class_linker-inl.h" |
| #include "dex_file-inl.h" |
| #include "gc/accounting/card_table-inl.h" |
| #include "indirect_reference_table-inl.h" |
| #include "interpreter/interpreter.h" |
| #include "jni.h" |
| #include "mirror/art_field-inl.h" |
| #include "mirror/art_method-inl.h" |
| #include "mirror/class-inl.h" |
| #include "mirror/class_loader.h" |
| #include "mirror/object-inl.h" |
| #include "mirror/object_array-inl.h" |
| #include "mirror/string-inl.h" |
| #include "mirror/throwable.h" |
| #include "object_utils.h" |
| #include "parsed_options.h" |
| #include "reflection.h" |
| #include "runtime.h" |
| #include "safe_map.h" |
| #include "scoped_thread_state_change.h" |
| #include "ScopedLocalRef.h" |
| #include "thread.h" |
| #include "utf.h" |
| #include "well_known_classes.h" |
| |
| namespace art { |
| |
| static const size_t kMonitorsInitial = 32; // Arbitrary. |
| static const size_t kMonitorsMax = 4096; // Arbitrary sanity check. |
| |
| static const size_t kLocalsInitial = 64; // Arbitrary. |
| static const size_t kLocalsMax = 512; // Arbitrary sanity check. |
| |
| static const size_t kPinTableInitial = 16; // Arbitrary. |
| static const size_t kPinTableMax = 1024; // Arbitrary sanity check. |
| |
| static size_t gGlobalsInitial = 512; // Arbitrary. |
| static size_t gGlobalsMax = 51200; // Arbitrary sanity check. (Must fit in 16 bits.) |
| |
| static const size_t kWeakGlobalsInitial = 16; // Arbitrary. |
| static const size_t kWeakGlobalsMax = 51200; // Arbitrary sanity check. (Must fit in 16 bits.) |
| |
| static jweak AddWeakGlobalReference(ScopedObjectAccess& soa, mirror::Object* obj) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| return soa.Vm()->AddWeakGlobalReference(soa.Self(), obj); |
| } |
| |
| static bool IsBadJniVersion(int version) { |
| // We don't support JNI_VERSION_1_1. These are the only other valid versions. |
| return version != JNI_VERSION_1_2 && version != JNI_VERSION_1_4 && version != JNI_VERSION_1_6; |
| } |
| |
| // Section 12.3.2 of the JNI spec describes JNI class descriptors. They're |
| // separated with slashes but aren't wrapped with "L;" like regular descriptors |
| // (i.e. "a/b/C" rather than "La/b/C;"). Arrays of reference types are an |
| // exception; there the "L;" must be present ("[La/b/C;"). Historically we've |
| // supported names with dots too (such as "a.b.C"). |
| static std::string NormalizeJniClassDescriptor(const char* name) { |
| std::string result; |
| // Add the missing "L;" if necessary. |
| if (name[0] == '[') { |
| result = name; |
| } else { |
| result += 'L'; |
| result += name; |
| result += ';'; |
| } |
| // Rewrite '.' as '/' for backwards compatibility. |
| if (result.find('.') != std::string::npos) { |
| LOG(WARNING) << "Call to JNI FindClass with dots in name: " |
| << "\"" << name << "\""; |
| std::replace(result.begin(), result.end(), '.', '/'); |
| } |
| return result; |
| } |
| |
| static void ThrowNoSuchMethodError(ScopedObjectAccess& soa, mirror::Class* c, |
| const char* name, const char* sig, const char* kind) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| ThrowLocation throw_location = soa.Self()->GetCurrentLocationForThrow(); |
| soa.Self()->ThrowNewExceptionF(throw_location, "Ljava/lang/NoSuchMethodError;", |
| "no %s method \"%s.%s%s\"", |
| kind, c->GetDescriptor().c_str(), name, sig); |
| } |
| |
| static mirror::Class* EnsureInitialized(Thread* self, mirror::Class* klass) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| if (LIKELY(klass->IsInitialized())) { |
| return klass; |
| } |
| StackHandleScope<1> hs(self); |
| Handle<mirror::Class> h_klass(hs.NewHandle(klass)); |
| if (!Runtime::Current()->GetClassLinker()->EnsureInitialized(h_klass, true, true)) { |
| return nullptr; |
| } |
| return h_klass.Get(); |
| } |
| |
| static jmethodID FindMethodID(ScopedObjectAccess& soa, jclass jni_class, |
| const char* name, const char* sig, bool is_static) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| mirror::Class* c = EnsureInitialized(soa.Self(), soa.Decode<mirror::Class*>(jni_class)); |
| if (c == nullptr) { |
| return nullptr; |
| } |
| mirror::ArtMethod* method = nullptr; |
| if (is_static) { |
| method = c->FindDirectMethod(name, sig); |
| } else { |
| method = c->FindVirtualMethod(name, sig); |
| if (method == nullptr) { |
| // No virtual method matching the signature. Search declared |
| // private methods and constructors. |
| method = c->FindDeclaredDirectMethod(name, sig); |
| } |
| } |
| if (method == nullptr || method->IsStatic() != is_static) { |
| ThrowNoSuchMethodError(soa, c, name, sig, is_static ? "static" : "non-static"); |
| return nullptr; |
| } |
| return soa.EncodeMethod(method); |
| } |
| |
| static mirror::ClassLoader* GetClassLoader(const ScopedObjectAccess& soa) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| mirror::ArtMethod* method = soa.Self()->GetCurrentMethod(nullptr); |
| // If we are running Runtime.nativeLoad, use the overriding ClassLoader it set. |
| if (method == soa.DecodeMethod(WellKnownClasses::java_lang_Runtime_nativeLoad)) { |
| return soa.Self()->GetClassLoaderOverride(); |
| } |
| // If we have a method, use its ClassLoader for context. |
| if (method != nullptr) { |
| return method->GetDeclaringClass()->GetClassLoader(); |
| } |
| // We don't have a method, so try to use the system ClassLoader. |
| mirror::ClassLoader* class_loader = |
| soa.Decode<mirror::ClassLoader*>(Runtime::Current()->GetSystemClassLoader()); |
| if (class_loader != nullptr) { |
| return class_loader; |
| } |
| // See if the override ClassLoader is set for gtests. |
| class_loader = soa.Self()->GetClassLoaderOverride(); |
| if (class_loader != nullptr) { |
| // If so, CommonCompilerTest should have set UseCompileTimeClassPath. |
| CHECK(Runtime::Current()->UseCompileTimeClassPath()); |
| return class_loader; |
| } |
| // Use the BOOTCLASSPATH. |
| return nullptr; |
| } |
| |
| static jfieldID FindFieldID(const ScopedObjectAccess& soa, jclass jni_class, const char* name, |
| const char* sig, bool is_static) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| StackHandleScope<2> hs(soa.Self()); |
| Handle<mirror::Class> c( |
| hs.NewHandle(EnsureInitialized(soa.Self(), soa.Decode<mirror::Class*>(jni_class)))); |
| if (c.Get() == nullptr) { |
| return nullptr; |
| } |
| mirror::ArtField* field = nullptr; |
| mirror::Class* field_type; |
| ClassLinker* class_linker = Runtime::Current()->GetClassLinker(); |
| if (sig[1] != '\0') { |
| Handle<mirror::ClassLoader> class_loader(hs.NewHandle(c->GetClassLoader())); |
| field_type = class_linker->FindClass(soa.Self(), sig, class_loader); |
| } else { |
| field_type = class_linker->FindPrimitiveClass(*sig); |
| } |
| if (field_type == nullptr) { |
| // Failed to find type from the signature of the field. |
| DCHECK(soa.Self()->IsExceptionPending()); |
| ThrowLocation throw_location; |
| StackHandleScope<1> hs(soa.Self()); |
| Handle<mirror::Throwable> cause(hs.NewHandle(soa.Self()->GetException(&throw_location))); |
| soa.Self()->ClearException(); |
| soa.Self()->ThrowNewExceptionF(throw_location, "Ljava/lang/NoSuchFieldError;", |
| "no type \"%s\" found and so no field \"%s\" " |
| "could be found in class \"%s\" or its superclasses", sig, name, |
| c->GetDescriptor().c_str()); |
| soa.Self()->GetException(nullptr)->SetCause(cause.Get()); |
| return nullptr; |
| } |
| if (is_static) { |
| field = mirror::Class::FindStaticField(soa.Self(), c, name, |
| field_type->GetDescriptor().c_str()); |
| } else { |
| field = c->FindInstanceField(name, field_type->GetDescriptor().c_str()); |
| } |
| if (field == nullptr) { |
| ThrowLocation throw_location = soa.Self()->GetCurrentLocationForThrow(); |
| soa.Self()->ThrowNewExceptionF(throw_location, "Ljava/lang/NoSuchFieldError;", |
| "no \"%s\" field \"%s\" in class \"%s\" or its superclasses", |
| sig, name, c->GetDescriptor().c_str()); |
| return nullptr; |
| } |
| return soa.EncodeField(field); |
| } |
| |
| static void PinPrimitiveArray(const ScopedObjectAccess& soa, mirror::Array* array) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| JavaVMExt* vm = soa.Vm(); |
| MutexLock mu(soa.Self(), vm->pins_lock); |
| vm->pin_table.Add(array); |
| } |
| |
| static void UnpinPrimitiveArray(const ScopedObjectAccess& soa, mirror::Array* array) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| JavaVMExt* vm = soa.Vm(); |
| MutexLock mu(soa.Self(), vm->pins_lock); |
| vm->pin_table.Remove(array); |
| } |
| |
| static void ThrowAIOOBE(ScopedObjectAccess& soa, mirror::Array* array, jsize start, |
| jsize length, const char* identifier) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| std::string type(PrettyTypeOf(array)); |
| ThrowLocation throw_location = soa.Self()->GetCurrentLocationForThrow(); |
| soa.Self()->ThrowNewExceptionF(throw_location, "Ljava/lang/ArrayIndexOutOfBoundsException;", |
| "%s offset=%d length=%d %s.length=%d", |
| type.c_str(), start, length, identifier, array->GetLength()); |
| } |
| |
| static void ThrowSIOOBE(ScopedObjectAccess& soa, jsize start, jsize length, |
| jsize array_length) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| ThrowLocation throw_location = soa.Self()->GetCurrentLocationForThrow(); |
| soa.Self()->ThrowNewExceptionF(throw_location, "Ljava/lang/StringIndexOutOfBoundsException;", |
| "offset=%d length=%d string.length()=%d", start, length, |
| array_length); |
| } |
| |
| int ThrowNewException(JNIEnv* env, jclass exception_class, const char* msg, jobject cause) |
| LOCKS_EXCLUDED(Locks::mutator_lock_) { |
| // Turn the const char* into a java.lang.String. |
| ScopedLocalRef<jstring> s(env, env->NewStringUTF(msg)); |
| if (msg != nullptr && s.get() == nullptr) { |
| return JNI_ERR; |
| } |
| |
| // Choose an appropriate constructor and set up the arguments. |
| jvalue args[2]; |
| const char* signature; |
| if (msg == nullptr && cause == nullptr) { |
| signature = "()V"; |
| } else if (msg != nullptr && cause == nullptr) { |
| signature = "(Ljava/lang/String;)V"; |
| args[0].l = s.get(); |
| } else if (msg == nullptr && cause != nullptr) { |
| signature = "(Ljava/lang/Throwable;)V"; |
| args[0].l = cause; |
| } else { |
| signature = "(Ljava/lang/String;Ljava/lang/Throwable;)V"; |
| args[0].l = s.get(); |
| args[1].l = cause; |
| } |
| jmethodID mid = env->GetMethodID(exception_class, "<init>", signature); |
| if (mid == nullptr) { |
| ScopedObjectAccess soa(env); |
| LOG(ERROR) << "No <init>" << signature << " in " |
| << PrettyClass(soa.Decode<mirror::Class*>(exception_class)); |
| return JNI_ERR; |
| } |
| |
| ScopedLocalRef<jthrowable> exception( |
| env, reinterpret_cast<jthrowable>(env->NewObjectA(exception_class, mid, args))); |
| if (exception.get() == nullptr) { |
| return JNI_ERR; |
| } |
| ScopedObjectAccess soa(env); |
| ThrowLocation throw_location = soa.Self()->GetCurrentLocationForThrow(); |
| soa.Self()->SetException(throw_location, soa.Decode<mirror::Throwable*>(exception.get())); |
| return JNI_OK; |
| } |
| |
| static jint JII_AttachCurrentThread(JavaVM* vm, JNIEnv** p_env, void* raw_args, bool as_daemon) { |
| if (vm == nullptr || p_env == nullptr) { |
| return JNI_ERR; |
| } |
| |
| // Return immediately if we're already attached. |
| Thread* self = Thread::Current(); |
| if (self != nullptr) { |
| *p_env = self->GetJniEnv(); |
| return JNI_OK; |
| } |
| |
| Runtime* runtime = reinterpret_cast<JavaVMExt*>(vm)->runtime; |
| |
| // No threads allowed in zygote mode. |
| if (runtime->IsZygote()) { |
| LOG(ERROR) << "Attempt to attach a thread in the zygote"; |
| return JNI_ERR; |
| } |
| |
| JavaVMAttachArgs* args = static_cast<JavaVMAttachArgs*>(raw_args); |
| const char* thread_name = nullptr; |
| jobject thread_group = nullptr; |
| if (args != nullptr) { |
| if (IsBadJniVersion(args->version)) { |
| LOG(ERROR) << "Bad JNI version passed to " |
| << (as_daemon ? "AttachCurrentThreadAsDaemon" : "AttachCurrentThread") << ": " |
| << args->version; |
| return JNI_EVERSION; |
| } |
| thread_name = args->name; |
| thread_group = args->group; |
| } |
| |
| if (!runtime->AttachCurrentThread(thread_name, as_daemon, thread_group, !runtime->IsCompiler())) { |
| *p_env = nullptr; |
| return JNI_ERR; |
| } else { |
| *p_env = Thread::Current()->GetJniEnv(); |
| return JNI_OK; |
| } |
| } |
| |
| class SharedLibrary { |
| public: |
| SharedLibrary(const std::string& path, void* handle, mirror::Object* class_loader) |
| : path_(path), |
| handle_(handle), |
| class_loader_(class_loader), |
| jni_on_load_lock_("JNI_OnLoad lock"), |
| jni_on_load_cond_("JNI_OnLoad condition variable", jni_on_load_lock_), |
| jni_on_load_thread_id_(Thread::Current()->GetThreadId()), |
| jni_on_load_result_(kPending) { |
| } |
| |
| mirror::Object* GetClassLoader() { |
| return class_loader_; |
| } |
| |
| std::string GetPath() { |
| return path_; |
| } |
| |
| /* |
| * Check the result of an earlier call to JNI_OnLoad on this library. |
| * If the call has not yet finished in another thread, wait for it. |
| */ |
| bool CheckOnLoadResult() |
| LOCKS_EXCLUDED(jni_on_load_lock_) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| Thread* self = Thread::Current(); |
| self->TransitionFromRunnableToSuspended(kWaitingForJniOnLoad); |
| bool okay; |
| { |
| MutexLock mu(self, jni_on_load_lock_); |
| |
| if (jni_on_load_thread_id_ == self->GetThreadId()) { |
| // Check this so we don't end up waiting for ourselves. We need to return "true" so the |
| // caller can continue. |
| LOG(INFO) << *self << " recursive attempt to load library " << "\"" << path_ << "\""; |
| okay = true; |
| } else { |
| while (jni_on_load_result_ == kPending) { |
| VLOG(jni) << "[" << *self << " waiting for \"" << path_ << "\" " << "JNI_OnLoad...]"; |
| jni_on_load_cond_.Wait(self); |
| } |
| |
| okay = (jni_on_load_result_ == kOkay); |
| VLOG(jni) << "[Earlier JNI_OnLoad for \"" << path_ << "\" " |
| << (okay ? "succeeded" : "failed") << "]"; |
| } |
| } |
| self->TransitionFromSuspendedToRunnable(); |
| return okay; |
| } |
| |
| void SetResult(bool result) LOCKS_EXCLUDED(jni_on_load_lock_) { |
| Thread* self = Thread::Current(); |
| MutexLock mu(self, jni_on_load_lock_); |
| |
| jni_on_load_result_ = result ? kOkay : kFailed; |
| jni_on_load_thread_id_ = 0; |
| |
| // Broadcast a wakeup to anybody sleeping on the condition variable. |
| jni_on_load_cond_.Broadcast(self); |
| } |
| |
| void* FindSymbol(const std::string& symbol_name) { |
| return dlsym(handle_, symbol_name.c_str()); |
| } |
| |
| void VisitRoots(RootCallback* visitor, void* arg) { |
| if (class_loader_ != nullptr) { |
| visitor(&class_loader_, arg, 0, kRootVMInternal); |
| } |
| } |
| |
| private: |
| enum JNI_OnLoadState { |
| kPending, |
| kFailed, |
| kOkay, |
| }; |
| |
| // Path to library "/system/lib/libjni.so". |
| std::string path_; |
| |
| // The void* returned by dlopen(3). |
| void* handle_; |
| |
| // The ClassLoader this library is associated with. |
| mirror::Object* class_loader_; |
| |
| // Guards remaining items. |
| Mutex jni_on_load_lock_ DEFAULT_MUTEX_ACQUIRED_AFTER; |
| // Wait for JNI_OnLoad in other thread. |
| ConditionVariable jni_on_load_cond_ GUARDED_BY(jni_on_load_lock_); |
| // Recursive invocation guard. |
| uint32_t jni_on_load_thread_id_ GUARDED_BY(jni_on_load_lock_); |
| // Result of earlier JNI_OnLoad call. |
| JNI_OnLoadState jni_on_load_result_ GUARDED_BY(jni_on_load_lock_); |
| }; |
| |
| // This exists mainly to keep implementation details out of the header file. |
| class Libraries { |
| public: |
| Libraries() { |
| } |
| |
| ~Libraries() { |
| STLDeleteValues(&libraries_); |
| } |
| |
| void Dump(std::ostream& os) const { |
| bool first = true; |
| for (const auto& library : libraries_) { |
| if (!first) { |
| os << ' '; |
| } |
| first = false; |
| os << library.first; |
| } |
| } |
| |
| size_t size() const { |
| return libraries_.size(); |
| } |
| |
| SharedLibrary* Get(const std::string& path) { |
| auto it = libraries_.find(path); |
| return (it == libraries_.end()) ? nullptr : it->second; |
| } |
| |
| void Put(const std::string& path, SharedLibrary* library) { |
| libraries_.Put(path, library); |
| } |
| |
| // See section 11.3 "Linking Native Methods" of the JNI spec. |
| void* FindNativeMethod(mirror::ArtMethod* m, std::string& detail) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| std::string jni_short_name(JniShortName(m)); |
| std::string jni_long_name(JniLongName(m)); |
| const mirror::ClassLoader* declaring_class_loader = m->GetDeclaringClass()->GetClassLoader(); |
| for (const auto& lib : libraries_) { |
| SharedLibrary* library = lib.second; |
| if (library->GetClassLoader() != declaring_class_loader) { |
| // We only search libraries loaded by the appropriate ClassLoader. |
| continue; |
| } |
| // Try the short name then the long name... |
| void* fn = library->FindSymbol(jni_short_name); |
| if (fn == nullptr) { |
| fn = library->FindSymbol(jni_long_name); |
| } |
| if (fn != nullptr) { |
| VLOG(jni) << "[Found native code for " << PrettyMethod(m) |
| << " in \"" << library->GetPath() << "\"]"; |
| return fn; |
| } |
| } |
| detail += "No implementation found for "; |
| detail += PrettyMethod(m); |
| detail += " (tried " + jni_short_name + " and " + jni_long_name + ")"; |
| LOG(ERROR) << detail; |
| return nullptr; |
| } |
| |
| void VisitRoots(RootCallback* callback, void* arg) { |
| for (auto& lib_pair : libraries_) { |
| lib_pair.second->VisitRoots(callback, arg); |
| } |
| } |
| |
| private: |
| SafeMap<std::string, SharedLibrary*> libraries_; |
| }; |
| |
| #define CHECK_NON_NULL_ARGUMENT(value) \ |
| CHECK_NON_NULL_ARGUMENT_FN_NAME(__FUNCTION__, value, nullptr) |
| |
| #define CHECK_NON_NULL_ARGUMENT_RETURN_VOID(value) \ |
| CHECK_NON_NULL_ARGUMENT_FN_NAME(__FUNCTION__, value, ) |
| |
| #define CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(value) \ |
| CHECK_NON_NULL_ARGUMENT_FN_NAME(__FUNCTION__, value, 0) |
| |
| #define CHECK_NON_NULL_ARGUMENT_RETURN(value, return_val) \ |
| CHECK_NON_NULL_ARGUMENT_FN_NAME(__FUNCTION__, value, return_val) |
| |
| #define CHECK_NON_NULL_ARGUMENT_FN_NAME(name, value, return_val) \ |
| if (UNLIKELY(value == nullptr)) { \ |
| JniAbortF(name, #value " == null"); \ |
| return return_val; \ |
| } |
| |
| #define CHECK_NON_NULL_MEMCPY_ARGUMENT(length, value) \ |
| if (UNLIKELY(length != 0 && value == nullptr)) { \ |
| JniAbortF(__FUNCTION__, #value " == null"); \ |
| return; \ |
| } |
| |
| class JNI { |
| public: |
| static jint GetVersion(JNIEnv*) { |
| return JNI_VERSION_1_6; |
| } |
| |
| static jclass DefineClass(JNIEnv*, const char*, jobject, const jbyte*, jsize) { |
| LOG(WARNING) << "JNI DefineClass is not supported"; |
| return nullptr; |
| } |
| |
| static jclass FindClass(JNIEnv* env, const char* name) { |
| CHECK_NON_NULL_ARGUMENT(name); |
| Runtime* runtime = Runtime::Current(); |
| ClassLinker* class_linker = runtime->GetClassLinker(); |
| std::string descriptor(NormalizeJniClassDescriptor(name)); |
| ScopedObjectAccess soa(env); |
| mirror::Class* c = nullptr; |
| if (runtime->IsStarted()) { |
| StackHandleScope<1> hs(soa.Self()); |
| Handle<mirror::ClassLoader> class_loader(hs.NewHandle(GetClassLoader(soa))); |
| c = class_linker->FindClass(soa.Self(), descriptor.c_str(), class_loader); |
| } else { |
| c = class_linker->FindSystemClass(soa.Self(), descriptor.c_str()); |
| } |
| return soa.AddLocalReference<jclass>(c); |
| } |
| |
| static jmethodID FromReflectedMethod(JNIEnv* env, jobject jlr_method) { |
| CHECK_NON_NULL_ARGUMENT(jlr_method); |
| ScopedObjectAccess soa(env); |
| return soa.EncodeMethod(mirror::ArtMethod::FromReflectedMethod(soa, jlr_method)); |
| } |
| |
| static jfieldID FromReflectedField(JNIEnv* env, jobject jlr_field) { |
| CHECK_NON_NULL_ARGUMENT(jlr_field); |
| ScopedObjectAccess soa(env); |
| return soa.EncodeField(mirror::ArtField::FromReflectedField(soa, jlr_field)); |
| } |
| |
| static jobject ToReflectedMethod(JNIEnv* env, jclass, jmethodID mid, jboolean) { |
| CHECK_NON_NULL_ARGUMENT(mid); |
| ScopedObjectAccess soa(env); |
| mirror::ArtMethod* m = soa.DecodeMethod(mid); |
| CHECK(!kMovingMethods); |
| jobject art_method = soa.AddLocalReference<jobject>(m); |
| jobject reflect_method = env->AllocObject(WellKnownClasses::java_lang_reflect_Method); |
| if (env->ExceptionCheck()) { |
| return nullptr; |
| } |
| SetObjectField(env, reflect_method, |
| WellKnownClasses::java_lang_reflect_AbstractMethod_artMethod, art_method); |
| return reflect_method; |
| } |
| |
| static jobject ToReflectedField(JNIEnv* env, jclass, jfieldID fid, jboolean) { |
| CHECK_NON_NULL_ARGUMENT(fid); |
| ScopedObjectAccess soa(env); |
| mirror::ArtField* f = soa.DecodeField(fid); |
| jobject art_field = soa.AddLocalReference<jobject>(f); |
| jobject reflect_field = env->AllocObject(WellKnownClasses::java_lang_reflect_Field); |
| if (env->ExceptionCheck()) { |
| return nullptr; |
| } |
| SetObjectField(env, reflect_field, |
| WellKnownClasses::java_lang_reflect_Field_artField, art_field); |
| return reflect_field; |
| } |
| |
| static jclass GetObjectClass(JNIEnv* env, jobject java_object) { |
| CHECK_NON_NULL_ARGUMENT(java_object); |
| ScopedObjectAccess soa(env); |
| mirror::Object* o = soa.Decode<mirror::Object*>(java_object); |
| return soa.AddLocalReference<jclass>(o->GetClass()); |
| } |
| |
| static jclass GetSuperclass(JNIEnv* env, jclass java_class) { |
| CHECK_NON_NULL_ARGUMENT(java_class); |
| ScopedObjectAccess soa(env); |
| mirror::Class* c = soa.Decode<mirror::Class*>(java_class); |
| return soa.AddLocalReference<jclass>(c->GetSuperClass()); |
| } |
| |
| static jboolean IsAssignableFrom(JNIEnv* env, jclass java_class1, jclass java_class2) { |
| CHECK_NON_NULL_ARGUMENT_RETURN(java_class1, JNI_FALSE); |
| CHECK_NON_NULL_ARGUMENT_RETURN(java_class2, JNI_FALSE); |
| ScopedObjectAccess soa(env); |
| mirror::Class* c1 = soa.Decode<mirror::Class*>(java_class1); |
| mirror::Class* c2 = soa.Decode<mirror::Class*>(java_class2); |
| return c1->IsAssignableFrom(c2) ? JNI_TRUE : JNI_FALSE; |
| } |
| |
| static jboolean IsInstanceOf(JNIEnv* env, jobject jobj, jclass java_class) { |
| CHECK_NON_NULL_ARGUMENT_RETURN(java_class, JNI_FALSE); |
| if (jobj == nullptr) { |
| // Note: JNI is different from regular Java instanceof in this respect |
| return JNI_TRUE; |
| } else { |
| ScopedObjectAccess soa(env); |
| mirror::Object* obj = soa.Decode<mirror::Object*>(jobj); |
| mirror::Class* c = soa.Decode<mirror::Class*>(java_class); |
| return obj->InstanceOf(c) ? JNI_TRUE : JNI_FALSE; |
| } |
| } |
| |
| static jint Throw(JNIEnv* env, jthrowable java_exception) { |
| ScopedObjectAccess soa(env); |
| mirror::Throwable* exception = soa.Decode<mirror::Throwable*>(java_exception); |
| if (exception == nullptr) { |
| return JNI_ERR; |
| } |
| ThrowLocation throw_location = soa.Self()->GetCurrentLocationForThrow(); |
| soa.Self()->SetException(throw_location, exception); |
| return JNI_OK; |
| } |
| |
| static jint ThrowNew(JNIEnv* env, jclass c, const char* msg) { |
| CHECK_NON_NULL_ARGUMENT_RETURN(c, JNI_ERR); |
| return ThrowNewException(env, c, msg, nullptr); |
| } |
| |
| static jboolean ExceptionCheck(JNIEnv* env) { |
| return static_cast<JNIEnvExt*>(env)->self->IsExceptionPending() ? JNI_TRUE : JNI_FALSE; |
| } |
| |
| static void ExceptionClear(JNIEnv* env) { |
| ScopedObjectAccess soa(env); |
| soa.Self()->ClearException(); |
| } |
| |
| static void ExceptionDescribe(JNIEnv* env) { |
| ScopedObjectAccess soa(env); |
| |
| StackHandleScope<3> hs(soa.Self()); |
| // TODO: Use nullptr instead of null handles? |
| auto old_throw_this_object(hs.NewHandle<mirror::Object>(nullptr)); |
| auto old_throw_method(hs.NewHandle<mirror::ArtMethod>(nullptr)); |
| auto old_exception(hs.NewHandle<mirror::Throwable>(nullptr)); |
| uint32_t old_throw_dex_pc; |
| bool old_is_exception_reported; |
| { |
| ThrowLocation old_throw_location; |
| mirror::Throwable* old_exception_obj = soa.Self()->GetException(&old_throw_location); |
| old_throw_this_object.Assign(old_throw_location.GetThis()); |
| old_throw_method.Assign(old_throw_location.GetMethod()); |
| old_exception.Assign(old_exception_obj); |
| old_throw_dex_pc = old_throw_location.GetDexPc(); |
| old_is_exception_reported = soa.Self()->IsExceptionReportedToInstrumentation(); |
| soa.Self()->ClearException(); |
| } |
| ScopedLocalRef<jthrowable> exception(env, |
| soa.AddLocalReference<jthrowable>(old_exception.Get())); |
| ScopedLocalRef<jclass> exception_class(env, env->GetObjectClass(exception.get())); |
| jmethodID mid = env->GetMethodID(exception_class.get(), "printStackTrace", "()V"); |
| if (mid == nullptr) { |
| LOG(WARNING) << "JNI WARNING: no printStackTrace()V in " |
| << PrettyTypeOf(old_exception.Get()); |
| } else { |
| env->CallVoidMethod(exception.get(), mid); |
| if (soa.Self()->IsExceptionPending()) { |
| LOG(WARNING) << "JNI WARNING: " << PrettyTypeOf(soa.Self()->GetException(nullptr)) |
| << " thrown while calling printStackTrace"; |
| soa.Self()->ClearException(); |
| } |
| } |
| ThrowLocation gc_safe_throw_location(old_throw_this_object.Get(), old_throw_method.Get(), |
| old_throw_dex_pc); |
| |
| soa.Self()->SetException(gc_safe_throw_location, old_exception.Get()); |
| soa.Self()->SetExceptionReportedToInstrumentation(old_is_exception_reported); |
| } |
| |
| static jthrowable ExceptionOccurred(JNIEnv* env) { |
| ScopedObjectAccess soa(env); |
| mirror::Object* exception = soa.Self()->GetException(nullptr); |
| return soa.AddLocalReference<jthrowable>(exception); |
| } |
| |
| static void FatalError(JNIEnv*, const char* msg) { |
| LOG(FATAL) << "JNI FatalError called: " << msg; |
| } |
| |
| static jint PushLocalFrame(JNIEnv* env, jint capacity) { |
| // TODO: SOA may not be necessary but I do it to please lock annotations. |
| ScopedObjectAccess soa(env); |
| if (EnsureLocalCapacity(soa, capacity, "PushLocalFrame") != JNI_OK) { |
| return JNI_ERR; |
| } |
| static_cast<JNIEnvExt*>(env)->PushFrame(capacity); |
| return JNI_OK; |
| } |
| |
| static jobject PopLocalFrame(JNIEnv* env, jobject java_survivor) { |
| ScopedObjectAccess soa(env); |
| mirror::Object* survivor = soa.Decode<mirror::Object*>(java_survivor); |
| soa.Env()->PopFrame(); |
| return soa.AddLocalReference<jobject>(survivor); |
| } |
| |
| static jint EnsureLocalCapacity(JNIEnv* env, jint desired_capacity) { |
| // TODO: SOA may not be necessary but I do it to please lock annotations. |
| ScopedObjectAccess soa(env); |
| return EnsureLocalCapacity(soa, desired_capacity, "EnsureLocalCapacity"); |
| } |
| |
| static jobject NewGlobalRef(JNIEnv* env, jobject obj) { |
| ScopedObjectAccess soa(env); |
| mirror::Object* decoded_obj = soa.Decode<mirror::Object*>(obj); |
| // Check for null after decoding the object to handle cleared weak globals. |
| if (decoded_obj == nullptr) { |
| return nullptr; |
| } |
| JavaVMExt* vm = soa.Vm(); |
| IndirectReferenceTable& globals = vm->globals; |
| WriterMutexLock mu(soa.Self(), vm->globals_lock); |
| IndirectRef ref = globals.Add(IRT_FIRST_SEGMENT, decoded_obj); |
| return reinterpret_cast<jobject>(ref); |
| } |
| |
| static void DeleteGlobalRef(JNIEnv* env, jobject obj) { |
| if (obj == nullptr) { |
| return; |
| } |
| JavaVMExt* vm = reinterpret_cast<JNIEnvExt*>(env)->vm; |
| IndirectReferenceTable& globals = vm->globals; |
| Thread* self = reinterpret_cast<JNIEnvExt*>(env)->self; |
| WriterMutexLock mu(self, vm->globals_lock); |
| |
| if (!globals.Remove(IRT_FIRST_SEGMENT, obj)) { |
| LOG(WARNING) << "JNI WARNING: DeleteGlobalRef(" << obj << ") " |
| << "failed to find entry"; |
| } |
| } |
| |
| static jweak NewWeakGlobalRef(JNIEnv* env, jobject obj) { |
| ScopedObjectAccess soa(env); |
| return AddWeakGlobalReference(soa, soa.Decode<mirror::Object*>(obj)); |
| } |
| |
| static void DeleteWeakGlobalRef(JNIEnv* env, jweak obj) { |
| if (obj != nullptr) { |
| ScopedObjectAccess soa(env); |
| soa.Vm()->DeleteWeakGlobalRef(soa.Self(), obj); |
| } |
| } |
| |
| static jobject NewLocalRef(JNIEnv* env, jobject obj) { |
| ScopedObjectAccess soa(env); |
| mirror::Object* decoded_obj = soa.Decode<mirror::Object*>(obj); |
| // Check for null after decoding the object to handle cleared weak globals. |
| if (decoded_obj == nullptr) { |
| return nullptr; |
| } |
| return soa.AddLocalReference<jobject>(decoded_obj); |
| } |
| |
| static void DeleteLocalRef(JNIEnv* env, jobject obj) { |
| if (obj == nullptr) { |
| return; |
| } |
| ScopedObjectAccess soa(env); |
| IndirectReferenceTable& locals = reinterpret_cast<JNIEnvExt*>(env)->locals; |
| |
| uint32_t cookie = reinterpret_cast<JNIEnvExt*>(env)->local_ref_cookie; |
| if (!locals.Remove(cookie, obj)) { |
| // Attempting to delete a local reference that is not in the |
| // topmost local reference frame is a no-op. DeleteLocalRef returns |
| // void and doesn't throw any exceptions, but we should probably |
| // complain about it so the user will notice that things aren't |
| // going quite the way they expect. |
| LOG(WARNING) << "JNI WARNING: DeleteLocalRef(" << obj << ") " |
| << "failed to find entry"; |
| } |
| } |
| |
| static jboolean IsSameObject(JNIEnv* env, jobject obj1, jobject obj2) { |
| if (obj1 == obj2) { |
| return JNI_TRUE; |
| } else { |
| ScopedObjectAccess soa(env); |
| return (soa.Decode<mirror::Object*>(obj1) == soa.Decode<mirror::Object*>(obj2)) |
| ? JNI_TRUE : JNI_FALSE; |
| } |
| } |
| |
| static jobject AllocObject(JNIEnv* env, jclass java_class) { |
| CHECK_NON_NULL_ARGUMENT(java_class); |
| ScopedObjectAccess soa(env); |
| mirror::Class* c = EnsureInitialized(soa.Self(), soa.Decode<mirror::Class*>(java_class)); |
| if (c == nullptr) { |
| return nullptr; |
| } |
| return soa.AddLocalReference<jobject>(c->AllocObject(soa.Self())); |
| } |
| |
| static jobject NewObject(JNIEnv* env, jclass java_class, jmethodID mid, ...) { |
| va_list args; |
| va_start(args, mid); |
| CHECK_NON_NULL_ARGUMENT(java_class); |
| CHECK_NON_NULL_ARGUMENT(mid); |
| jobject result = NewObjectV(env, java_class, mid, args); |
| va_end(args); |
| return result; |
| } |
| |
| static jobject NewObjectV(JNIEnv* env, jclass java_class, jmethodID mid, va_list args) { |
| CHECK_NON_NULL_ARGUMENT(java_class); |
| CHECK_NON_NULL_ARGUMENT(mid); |
| ScopedObjectAccess soa(env); |
| mirror::Class* c = EnsureInitialized(soa.Self(), soa.Decode<mirror::Class*>(java_class)); |
| if (c == nullptr) { |
| return nullptr; |
| } |
| mirror::Object* result = c->AllocObject(soa.Self()); |
| if (result == nullptr) { |
| return nullptr; |
| } |
| jobject local_result = soa.AddLocalReference<jobject>(result); |
| CallNonvirtualVoidMethodV(env, local_result, java_class, mid, args); |
| if (soa.Self()->IsExceptionPending()) { |
| return nullptr; |
| } |
| return local_result; |
| } |
| |
| static jobject NewObjectA(JNIEnv* env, jclass java_class, jmethodID mid, jvalue* args) { |
| CHECK_NON_NULL_ARGUMENT(java_class); |
| CHECK_NON_NULL_ARGUMENT(mid); |
| ScopedObjectAccess soa(env); |
| mirror::Class* c = EnsureInitialized(soa.Self(), soa.Decode<mirror::Class*>(java_class)); |
| if (c == nullptr) { |
| return nullptr; |
| } |
| mirror::Object* result = c->AllocObject(soa.Self()); |
| if (result == nullptr) { |
| return nullptr; |
| } |
| jobject local_result = soa.AddLocalReference<jobjectArray>(result); |
| CallNonvirtualVoidMethodA(env, local_result, java_class, mid, args); |
| if (soa.Self()->IsExceptionPending()) { |
| return nullptr; |
| } |
| return local_result; |
| } |
| |
| static jmethodID GetMethodID(JNIEnv* env, jclass java_class, const char* name, const char* sig) { |
| CHECK_NON_NULL_ARGUMENT(java_class); |
| CHECK_NON_NULL_ARGUMENT(name); |
| CHECK_NON_NULL_ARGUMENT(sig); |
| ScopedObjectAccess soa(env); |
| return FindMethodID(soa, java_class, name, sig, false); |
| } |
| |
| static jmethodID GetStaticMethodID(JNIEnv* env, jclass java_class, const char* name, |
| const char* sig) { |
| CHECK_NON_NULL_ARGUMENT(java_class); |
| CHECK_NON_NULL_ARGUMENT(name); |
| CHECK_NON_NULL_ARGUMENT(sig); |
| ScopedObjectAccess soa(env); |
| return FindMethodID(soa, java_class, name, sig, true); |
| } |
| |
| static jobject CallObjectMethod(JNIEnv* env, jobject obj, jmethodID mid, ...) { |
| va_list ap; |
| va_start(ap, mid); |
| CHECK_NON_NULL_ARGUMENT(obj); |
| CHECK_NON_NULL_ARGUMENT(mid); |
| ScopedObjectAccess soa(env); |
| JValue result(InvokeVirtualOrInterfaceWithVarArgs(soa, obj, mid, ap)); |
| va_end(ap); |
| return soa.AddLocalReference<jobject>(result.GetL()); |
| } |
| |
| static jobject CallObjectMethodV(JNIEnv* env, jobject obj, jmethodID mid, va_list args) { |
| CHECK_NON_NULL_ARGUMENT(obj); |
| CHECK_NON_NULL_ARGUMENT(mid); |
| ScopedObjectAccess soa(env); |
| JValue result(InvokeVirtualOrInterfaceWithVarArgs(soa, obj, mid, args)); |
| return soa.AddLocalReference<jobject>(result.GetL()); |
| } |
| |
| static jobject CallObjectMethodA(JNIEnv* env, jobject obj, jmethodID mid, jvalue* args) { |
| CHECK_NON_NULL_ARGUMENT(obj); |
| CHECK_NON_NULL_ARGUMENT(mid); |
| ScopedObjectAccess soa(env); |
| JValue result(InvokeVirtualOrInterfaceWithJValues(soa, soa.Decode<mirror::Object*>(obj), mid, |
| args)); |
| return soa.AddLocalReference<jobject>(result.GetL()); |
| } |
| |
| static jboolean CallBooleanMethod(JNIEnv* env, jobject obj, jmethodID mid, ...) { |
| va_list ap; |
| va_start(ap, mid); |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj); |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid); |
| ScopedObjectAccess soa(env); |
| JValue result(InvokeVirtualOrInterfaceWithVarArgs(soa, obj, mid, ap)); |
| va_end(ap); |
| return result.GetZ(); |
| } |
| |
| static jboolean CallBooleanMethodV(JNIEnv* env, jobject obj, jmethodID mid, va_list args) { |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj); |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid); |
| ScopedObjectAccess soa(env); |
| return InvokeVirtualOrInterfaceWithVarArgs(soa, obj, mid, args).GetZ(); |
| } |
| |
| static jboolean CallBooleanMethodA(JNIEnv* env, jobject obj, jmethodID mid, jvalue* args) { |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj); |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid); |
| ScopedObjectAccess soa(env); |
| return InvokeVirtualOrInterfaceWithJValues(soa, soa.Decode<mirror::Object*>(obj), mid, |
| args).GetZ(); |
| } |
| |
| static jbyte CallByteMethod(JNIEnv* env, jobject obj, jmethodID mid, ...) { |
| va_list ap; |
| va_start(ap, mid); |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj); |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid); |
| ScopedObjectAccess soa(env); |
| JValue result(InvokeVirtualOrInterfaceWithVarArgs(soa, obj, mid, ap)); |
| va_end(ap); |
| return result.GetB(); |
| } |
| |
| static jbyte CallByteMethodV(JNIEnv* env, jobject obj, jmethodID mid, va_list args) { |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj); |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid); |
| ScopedObjectAccess soa(env); |
| return InvokeVirtualOrInterfaceWithVarArgs(soa, obj, mid, args).GetB(); |
| } |
| |
| static jbyte CallByteMethodA(JNIEnv* env, jobject obj, jmethodID mid, jvalue* args) { |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj); |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid); |
| ScopedObjectAccess soa(env); |
| return InvokeVirtualOrInterfaceWithJValues(soa, soa.Decode<mirror::Object*>(obj), mid, |
| args).GetB(); |
| } |
| |
| static jchar CallCharMethod(JNIEnv* env, jobject obj, jmethodID mid, ...) { |
| va_list ap; |
| va_start(ap, mid); |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj); |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid); |
| ScopedObjectAccess soa(env); |
| JValue result(InvokeVirtualOrInterfaceWithVarArgs(soa, obj, mid, ap)); |
| va_end(ap); |
| return result.GetC(); |
| } |
| |
| static jchar CallCharMethodV(JNIEnv* env, jobject obj, jmethodID mid, va_list args) { |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj); |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid); |
| ScopedObjectAccess soa(env); |
| return InvokeVirtualOrInterfaceWithVarArgs(soa, obj, mid, args).GetC(); |
| } |
| |
| static jchar CallCharMethodA(JNIEnv* env, jobject obj, jmethodID mid, jvalue* args) { |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj); |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid); |
| ScopedObjectAccess soa(env); |
| return InvokeVirtualOrInterfaceWithJValues(soa, soa.Decode<mirror::Object*>(obj), mid, |
| args).GetC(); |
| } |
| |
| static jdouble CallDoubleMethod(JNIEnv* env, jobject obj, jmethodID mid, ...) { |
| va_list ap; |
| va_start(ap, mid); |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj); |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid); |
| ScopedObjectAccess soa(env); |
| JValue result(InvokeVirtualOrInterfaceWithVarArgs(soa, obj, mid, ap)); |
| va_end(ap); |
| return result.GetD(); |
| } |
| |
| static jdouble CallDoubleMethodV(JNIEnv* env, jobject obj, jmethodID mid, va_list args) { |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj); |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid); |
| ScopedObjectAccess soa(env); |
| return InvokeVirtualOrInterfaceWithVarArgs(soa, obj, mid, args).GetD(); |
| } |
| |
| static jdouble CallDoubleMethodA(JNIEnv* env, jobject obj, jmethodID mid, jvalue* args) { |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj); |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid); |
| ScopedObjectAccess soa(env); |
| return InvokeVirtualOrInterfaceWithJValues(soa, soa.Decode<mirror::Object*>(obj), mid, |
| args).GetD(); |
| } |
| |
| static jfloat CallFloatMethod(JNIEnv* env, jobject obj, jmethodID mid, ...) { |
| va_list ap; |
| va_start(ap, mid); |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj); |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid); |
| ScopedObjectAccess soa(env); |
| JValue result(InvokeVirtualOrInterfaceWithVarArgs(soa, obj, mid, ap)); |
| va_end(ap); |
| return result.GetF(); |
| } |
| |
| static jfloat CallFloatMethodV(JNIEnv* env, jobject obj, jmethodID mid, va_list args) { |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj); |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid); |
| ScopedObjectAccess soa(env); |
| return InvokeVirtualOrInterfaceWithVarArgs(soa, obj, mid, args).GetF(); |
| } |
| |
| static jfloat CallFloatMethodA(JNIEnv* env, jobject obj, jmethodID mid, jvalue* args) { |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj); |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid); |
| ScopedObjectAccess soa(env); |
| return InvokeVirtualOrInterfaceWithJValues(soa, soa.Decode<mirror::Object*>(obj), mid, |
| args).GetF(); |
| } |
| |
| static jint CallIntMethod(JNIEnv* env, jobject obj, jmethodID mid, ...) { |
| va_list ap; |
| va_start(ap, mid); |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj); |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid); |
| ScopedObjectAccess soa(env); |
| JValue result(InvokeVirtualOrInterfaceWithVarArgs(soa, obj, mid, ap)); |
| va_end(ap); |
| return result.GetI(); |
| } |
| |
| static jint CallIntMethodV(JNIEnv* env, jobject obj, jmethodID mid, va_list args) { |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj); |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid); |
| ScopedObjectAccess soa(env); |
| return InvokeVirtualOrInterfaceWithVarArgs(soa, obj, mid, args).GetI(); |
| } |
| |
| static jint CallIntMethodA(JNIEnv* env, jobject obj, jmethodID mid, jvalue* args) { |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj); |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid); |
| ScopedObjectAccess soa(env); |
| return InvokeVirtualOrInterfaceWithJValues(soa, soa.Decode<mirror::Object*>(obj), mid, |
| args).GetI(); |
| } |
| |
| static jlong CallLongMethod(JNIEnv* env, jobject obj, jmethodID mid, ...) { |
| va_list ap; |
| va_start(ap, mid); |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj); |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid); |
| ScopedObjectAccess soa(env); |
| JValue result(InvokeVirtualOrInterfaceWithVarArgs(soa, obj, mid, ap)); |
| va_end(ap); |
| return result.GetJ(); |
| } |
| |
| static jlong CallLongMethodV(JNIEnv* env, jobject obj, jmethodID mid, va_list args) { |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj); |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid); |
| ScopedObjectAccess soa(env); |
| return InvokeVirtualOrInterfaceWithVarArgs(soa, obj, mid, args).GetJ(); |
| } |
| |
| static jlong CallLongMethodA(JNIEnv* env, jobject obj, jmethodID mid, jvalue* args) { |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj); |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid); |
| ScopedObjectAccess soa(env); |
| return InvokeVirtualOrInterfaceWithJValues(soa, soa.Decode<mirror::Object*>(obj), mid, |
| args).GetJ(); |
| } |
| |
| static jshort CallShortMethod(JNIEnv* env, jobject obj, jmethodID mid, ...) { |
| va_list ap; |
| va_start(ap, mid); |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj); |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid); |
| ScopedObjectAccess soa(env); |
| JValue result(InvokeVirtualOrInterfaceWithVarArgs(soa, obj, mid, ap)); |
| va_end(ap); |
| return result.GetS(); |
| } |
| |
| static jshort CallShortMethodV(JNIEnv* env, jobject obj, jmethodID mid, va_list args) { |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj); |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid); |
| ScopedObjectAccess soa(env); |
| return InvokeVirtualOrInterfaceWithVarArgs(soa, obj, mid, args).GetS(); |
| } |
| |
| static jshort CallShortMethodA(JNIEnv* env, jobject obj, jmethodID mid, jvalue* args) { |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj); |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid); |
| ScopedObjectAccess soa(env); |
| return InvokeVirtualOrInterfaceWithJValues(soa, soa.Decode<mirror::Object*>(obj), mid, |
| args).GetS(); |
| } |
| |
| static void CallVoidMethod(JNIEnv* env, jobject obj, jmethodID mid, ...) { |
| va_list ap; |
| va_start(ap, mid); |
| CHECK_NON_NULL_ARGUMENT_RETURN_VOID(obj); |
| CHECK_NON_NULL_ARGUMENT_RETURN_VOID(mid); |
| ScopedObjectAccess soa(env); |
| InvokeVirtualOrInterfaceWithVarArgs(soa, obj, mid, ap); |
| va_end(ap); |
| } |
| |
| static void CallVoidMethodV(JNIEnv* env, jobject obj, jmethodID mid, va_list args) { |
| CHECK_NON_NULL_ARGUMENT_RETURN_VOID(obj); |
| CHECK_NON_NULL_ARGUMENT_RETURN_VOID(mid); |
| ScopedObjectAccess soa(env); |
| InvokeVirtualOrInterfaceWithVarArgs(soa, obj, mid, args); |
| } |
| |
| static void CallVoidMethodA(JNIEnv* env, jobject obj, jmethodID mid, jvalue* args) { |
| CHECK_NON_NULL_ARGUMENT_RETURN_VOID(obj); |
| CHECK_NON_NULL_ARGUMENT_RETURN_VOID(mid); |
| ScopedObjectAccess soa(env); |
| InvokeVirtualOrInterfaceWithJValues(soa, soa.Decode<mirror::Object*>(obj), mid, args); |
| } |
| |
| static jobject CallNonvirtualObjectMethod(JNIEnv* env, jobject obj, jclass, jmethodID mid, ...) { |
| va_list ap; |
| va_start(ap, mid); |
| CHECK_NON_NULL_ARGUMENT(obj); |
| CHECK_NON_NULL_ARGUMENT(mid); |
| ScopedObjectAccess soa(env); |
| JValue result(InvokeWithVarArgs(soa, obj, mid, ap)); |
| jobject local_result = soa.AddLocalReference<jobject>(result.GetL()); |
| va_end(ap); |
| return local_result; |
| } |
| |
| static jobject CallNonvirtualObjectMethodV(JNIEnv* env, jobject obj, jclass, jmethodID mid, |
| va_list args) { |
| CHECK_NON_NULL_ARGUMENT(obj); |
| CHECK_NON_NULL_ARGUMENT(mid); |
| ScopedObjectAccess soa(env); |
| JValue result(InvokeWithVarArgs(soa, obj, mid, args)); |
| return soa.AddLocalReference<jobject>(result.GetL()); |
| } |
| |
| static jobject CallNonvirtualObjectMethodA(JNIEnv* env, jobject obj, jclass, jmethodID mid, |
| jvalue* args) { |
| CHECK_NON_NULL_ARGUMENT(obj); |
| CHECK_NON_NULL_ARGUMENT(mid); |
| ScopedObjectAccess soa(env); |
| JValue result(InvokeWithJValues(soa, soa.Decode<mirror::Object*>(obj), mid, args)); |
| return soa.AddLocalReference<jobject>(result.GetL()); |
| } |
| |
| static jboolean CallNonvirtualBooleanMethod(JNIEnv* env, jobject obj, jclass, jmethodID mid, |
| ...) { |
| va_list ap; |
| va_start(ap, mid); |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj); |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid); |
| ScopedObjectAccess soa(env); |
| JValue result(InvokeWithVarArgs(soa, obj, mid, ap)); |
| va_end(ap); |
| return result.GetZ(); |
| } |
| |
| static jboolean CallNonvirtualBooleanMethodV(JNIEnv* env, jobject obj, jclass, jmethodID mid, |
| va_list args) { |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj); |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid); |
| ScopedObjectAccess soa(env); |
| return InvokeWithVarArgs(soa, obj, mid, args).GetZ(); |
| } |
| |
| static jboolean CallNonvirtualBooleanMethodA(JNIEnv* env, jobject obj, jclass, jmethodID mid, |
| jvalue* args) { |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj); |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid); |
| ScopedObjectAccess soa(env); |
| return InvokeWithJValues(soa, soa.Decode<mirror::Object*>(obj), mid, args).GetZ(); |
| } |
| |
| static jbyte CallNonvirtualByteMethod(JNIEnv* env, jobject obj, jclass, jmethodID mid, ...) { |
| va_list ap; |
| va_start(ap, mid); |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj); |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid); |
| ScopedObjectAccess soa(env); |
| JValue result(InvokeWithVarArgs(soa, obj, mid, ap)); |
| va_end(ap); |
| return result.GetB(); |
| } |
| |
| static jbyte CallNonvirtualByteMethodV(JNIEnv* env, jobject obj, jclass, jmethodID mid, |
| va_list args) { |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj); |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid); |
| ScopedObjectAccess soa(env); |
| return InvokeWithVarArgs(soa, obj, mid, args).GetB(); |
| } |
| |
| static jbyte CallNonvirtualByteMethodA(JNIEnv* env, jobject obj, jclass, jmethodID mid, |
| jvalue* args) { |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj); |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid); |
| ScopedObjectAccess soa(env); |
| return InvokeWithJValues(soa, soa.Decode<mirror::Object*>(obj), mid, args).GetB(); |
| } |
| |
| static jchar CallNonvirtualCharMethod(JNIEnv* env, jobject obj, jclass, jmethodID mid, ...) { |
| va_list ap; |
| va_start(ap, mid); |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj); |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid); |
| ScopedObjectAccess soa(env); |
| JValue result(InvokeWithVarArgs(soa, obj, mid, ap)); |
| va_end(ap); |
| return result.GetC(); |
| } |
| |
| static jchar CallNonvirtualCharMethodV(JNIEnv* env, jobject obj, jclass, jmethodID mid, |
| va_list args) { |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj); |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid); |
| ScopedObjectAccess soa(env); |
| return InvokeWithVarArgs(soa, obj, mid, args).GetC(); |
| } |
| |
| static jchar CallNonvirtualCharMethodA(JNIEnv* env, jobject obj, jclass, jmethodID mid, |
| jvalue* args) { |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj); |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid); |
| ScopedObjectAccess soa(env); |
| return InvokeWithJValues(soa, soa.Decode<mirror::Object*>(obj), mid, args).GetC(); |
| } |
| |
| static jshort CallNonvirtualShortMethod(JNIEnv* env, jobject obj, jclass, jmethodID mid, ...) { |
| va_list ap; |
| va_start(ap, mid); |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj); |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid); |
| ScopedObjectAccess soa(env); |
| JValue result(InvokeWithVarArgs(soa, obj, mid, ap)); |
| va_end(ap); |
| return result.GetS(); |
| } |
| |
| static jshort CallNonvirtualShortMethodV(JNIEnv* env, jobject obj, jclass, jmethodID mid, |
| va_list args) { |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj); |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid); |
| ScopedObjectAccess soa(env); |
| return InvokeWithVarArgs(soa, obj, mid, args).GetS(); |
| } |
| |
| static jshort CallNonvirtualShortMethodA(JNIEnv* env, jobject obj, jclass, jmethodID mid, |
| jvalue* args) { |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj); |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid); |
| ScopedObjectAccess soa(env); |
| return InvokeWithJValues(soa, soa.Decode<mirror::Object*>(obj), mid, args).GetS(); |
| } |
| |
| static jint CallNonvirtualIntMethod(JNIEnv* env, jobject obj, jclass, jmethodID mid, ...) { |
| va_list ap; |
| va_start(ap, mid); |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj); |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid); |
| ScopedObjectAccess soa(env); |
| JValue result(InvokeWithVarArgs(soa, obj, mid, ap)); |
| va_end(ap); |
| return result.GetI(); |
| } |
| |
| static jint CallNonvirtualIntMethodV(JNIEnv* env, jobject obj, jclass, jmethodID mid, |
| va_list args) { |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj); |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid); |
| ScopedObjectAccess soa(env); |
| return InvokeWithVarArgs(soa, obj, mid, args).GetI(); |
| } |
| |
| static jint CallNonvirtualIntMethodA(JNIEnv* env, jobject obj, jclass, jmethodID mid, |
| jvalue* args) { |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj); |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid); |
| ScopedObjectAccess soa(env); |
| return InvokeWithJValues(soa, soa.Decode<mirror::Object*>(obj), mid, args).GetI(); |
| } |
| |
| static jlong CallNonvirtualLongMethod(JNIEnv* env, jobject obj, jclass, jmethodID mid, ...) { |
| va_list ap; |
| va_start(ap, mid); |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj); |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid); |
| ScopedObjectAccess soa(env); |
| JValue result(InvokeWithVarArgs(soa, obj, mid, ap)); |
| va_end(ap); |
| return result.GetJ(); |
| } |
| |
| static jlong CallNonvirtualLongMethodV(JNIEnv* env, jobject obj, jclass, jmethodID mid, |
| va_list args) { |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj); |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid); |
| ScopedObjectAccess soa(env); |
| return InvokeWithVarArgs(soa, obj, mid, args).GetJ(); |
| } |
| |
| static jlong CallNonvirtualLongMethodA(JNIEnv* env, jobject obj, jclass, jmethodID mid, |
| jvalue* args) { |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj); |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid); |
| ScopedObjectAccess soa(env); |
| return InvokeWithJValues(soa, soa.Decode<mirror::Object*>(obj), mid, args).GetJ(); |
| } |
| |
| static jfloat CallNonvirtualFloatMethod(JNIEnv* env, jobject obj, jclass, jmethodID mid, ...) { |
| va_list ap; |
| va_start(ap, mid); |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj); |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid); |
| ScopedObjectAccess soa(env); |
| JValue result(InvokeWithVarArgs(soa, obj, mid, ap)); |
| va_end(ap); |
| return result.GetF(); |
| } |
| |
| static jfloat CallNonvirtualFloatMethodV(JNIEnv* env, jobject obj, jclass, jmethodID mid, |
| va_list args) { |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj); |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid); |
| ScopedObjectAccess soa(env); |
| return InvokeWithVarArgs(soa, obj, mid, args).GetF(); |
| } |
| |
| static jfloat CallNonvirtualFloatMethodA(JNIEnv* env, jobject obj, jclass, jmethodID mid, |
| jvalue* args) { |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj); |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid); |
| ScopedObjectAccess soa(env); |
| return InvokeWithJValues(soa, soa.Decode<mirror::Object*>(obj), mid, args).GetF(); |
| } |
| |
| static jdouble CallNonvirtualDoubleMethod(JNIEnv* env, jobject obj, jclass, jmethodID mid, ...) { |
| va_list ap; |
| va_start(ap, mid); |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj); |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid); |
| ScopedObjectAccess soa(env); |
| JValue result(InvokeWithVarArgs(soa, obj, mid, ap)); |
| va_end(ap); |
| return result.GetD(); |
| } |
| |
| static jdouble CallNonvirtualDoubleMethodV(JNIEnv* env, jobject obj, jclass, jmethodID mid, |
| va_list args) { |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj); |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid); |
| ScopedObjectAccess soa(env); |
| return InvokeWithVarArgs(soa, obj, mid, args).GetD(); |
| } |
| |
| static jdouble CallNonvirtualDoubleMethodA(JNIEnv* env, jobject obj, jclass, jmethodID mid, |
| jvalue* args) { |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(obj); |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid); |
| ScopedObjectAccess soa(env); |
| return InvokeWithJValues(soa, soa.Decode<mirror::Object*>(obj), mid, args).GetD(); |
| } |
| |
| static void CallNonvirtualVoidMethod(JNIEnv* env, jobject obj, jclass, jmethodID mid, ...) { |
| va_list ap; |
| va_start(ap, mid); |
| CHECK_NON_NULL_ARGUMENT_RETURN_VOID(obj); |
| CHECK_NON_NULL_ARGUMENT_RETURN_VOID(mid); |
| ScopedObjectAccess soa(env); |
| InvokeWithVarArgs(soa, obj, mid, ap); |
| va_end(ap); |
| } |
| |
| static void CallNonvirtualVoidMethodV(JNIEnv* env, jobject obj, jclass, jmethodID mid, |
| va_list args) { |
| CHECK_NON_NULL_ARGUMENT_RETURN_VOID(obj); |
| CHECK_NON_NULL_ARGUMENT_RETURN_VOID(mid); |
| ScopedObjectAccess soa(env); |
| InvokeWithVarArgs(soa, obj, mid, args); |
| } |
| |
| static void CallNonvirtualVoidMethodA(JNIEnv* env, jobject obj, jclass, jmethodID mid, |
| jvalue* args) { |
| CHECK_NON_NULL_ARGUMENT_RETURN_VOID(obj); |
| CHECK_NON_NULL_ARGUMENT_RETURN_VOID(mid); |
| ScopedObjectAccess soa(env); |
| InvokeWithJValues(soa, soa.Decode<mirror::Object*>(obj), mid, args); |
| } |
| |
| static jfieldID GetFieldID(JNIEnv* env, jclass java_class, const char* name, const char* sig) { |
| CHECK_NON_NULL_ARGUMENT(java_class); |
| CHECK_NON_NULL_ARGUMENT(name); |
| CHECK_NON_NULL_ARGUMENT(sig); |
| ScopedObjectAccess soa(env); |
| return FindFieldID(soa, java_class, name, sig, false); |
| } |
| |
| static jfieldID GetStaticFieldID(JNIEnv* env, jclass java_class, const char* name, |
| const char* sig) { |
| CHECK_NON_NULL_ARGUMENT(java_class); |
| CHECK_NON_NULL_ARGUMENT(name); |
| CHECK_NON_NULL_ARGUMENT(sig); |
| ScopedObjectAccess soa(env); |
| return FindFieldID(soa, java_class, name, sig, true); |
| } |
| |
| static jobject GetObjectField(JNIEnv* env, jobject obj, jfieldID fid) { |
| CHECK_NON_NULL_ARGUMENT(obj); |
| CHECK_NON_NULL_ARGUMENT(fid); |
| ScopedObjectAccess soa(env); |
| mirror::Object* o = soa.Decode<mirror::Object*>(obj); |
| mirror::ArtField* f = soa.DecodeField(fid); |
| return soa.AddLocalReference<jobject>(f->GetObject(o)); |
| } |
| |
| static jobject GetStaticObjectField(JNIEnv* env, jclass, jfieldID fid) { |
| CHECK_NON_NULL_ARGUMENT(fid); |
| ScopedObjectAccess soa(env); |
| mirror::ArtField* f = soa.DecodeField(fid); |
| return soa.AddLocalReference<jobject>(f->GetObject(f->GetDeclaringClass())); |
| } |
| |
| static void SetObjectField(JNIEnv* env, jobject java_object, jfieldID fid, jobject java_value) { |
| CHECK_NON_NULL_ARGUMENT_RETURN_VOID(java_object); |
| CHECK_NON_NULL_ARGUMENT_RETURN_VOID(fid); |
| ScopedObjectAccess soa(env); |
| mirror::Object* o = soa.Decode<mirror::Object*>(java_object); |
| mirror::Object* v = soa.Decode<mirror::Object*>(java_value); |
| mirror::ArtField* f = soa.DecodeField(fid); |
| f->SetObject<false>(o, v); |
| } |
| |
| static void SetStaticObjectField(JNIEnv* env, jclass, jfieldID fid, jobject java_value) { |
| CHECK_NON_NULL_ARGUMENT_RETURN_VOID(fid); |
| ScopedObjectAccess soa(env); |
| mirror::Object* v = soa.Decode<mirror::Object*>(java_value); |
| mirror::ArtField* f = soa.DecodeField(fid); |
| f->SetObject<false>(f->GetDeclaringClass(), v); |
| } |
| |
| #define GET_PRIMITIVE_FIELD(fn, instance) \ |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(instance); \ |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(fid); \ |
| ScopedObjectAccess soa(env); \ |
| mirror::Object* o = soa.Decode<mirror::Object*>(instance); \ |
| mirror::ArtField* f = soa.DecodeField(fid); \ |
| return f->Get ##fn (o) |
| |
| #define GET_STATIC_PRIMITIVE_FIELD(fn) \ |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(fid); \ |
| ScopedObjectAccess soa(env); \ |
| mirror::ArtField* f = soa.DecodeField(fid); \ |
| return f->Get ##fn (f->GetDeclaringClass()) |
| |
| #define SET_PRIMITIVE_FIELD(fn, instance, value) \ |
| CHECK_NON_NULL_ARGUMENT_RETURN_VOID(instance); \ |
| CHECK_NON_NULL_ARGUMENT_RETURN_VOID(fid); \ |
| ScopedObjectAccess soa(env); \ |
| mirror::Object* o = soa.Decode<mirror::Object*>(instance); \ |
| mirror::ArtField* f = soa.DecodeField(fid); \ |
| f->Set ##fn <false>(o, value) |
| |
| #define SET_STATIC_PRIMITIVE_FIELD(fn, value) \ |
| CHECK_NON_NULL_ARGUMENT_RETURN_VOID(fid); \ |
| ScopedObjectAccess soa(env); \ |
| mirror::ArtField* f = soa.DecodeField(fid); \ |
| f->Set ##fn <false>(f->GetDeclaringClass(), value) |
| |
| static jboolean GetBooleanField(JNIEnv* env, jobject obj, jfieldID fid) { |
| GET_PRIMITIVE_FIELD(Boolean, obj); |
| } |
| |
| static jbyte GetByteField(JNIEnv* env, jobject obj, jfieldID fid) { |
| GET_PRIMITIVE_FIELD(Byte, obj); |
| } |
| |
| static jchar GetCharField(JNIEnv* env, jobject obj, jfieldID fid) { |
| GET_PRIMITIVE_FIELD(Char, obj); |
| } |
| |
| static jshort GetShortField(JNIEnv* env, jobject obj, jfieldID fid) { |
| GET_PRIMITIVE_FIELD(Short, obj); |
| } |
| |
| static jint GetIntField(JNIEnv* env, jobject obj, jfieldID fid) { |
| GET_PRIMITIVE_FIELD(Int, obj); |
| } |
| |
| static jlong GetLongField(JNIEnv* env, jobject obj, jfieldID fid) { |
| GET_PRIMITIVE_FIELD(Long, obj); |
| } |
| |
| static jfloat GetFloatField(JNIEnv* env, jobject obj, jfieldID fid) { |
| GET_PRIMITIVE_FIELD(Float, obj); |
| } |
| |
| static jdouble GetDoubleField(JNIEnv* env, jobject obj, jfieldID fid) { |
| GET_PRIMITIVE_FIELD(Double, obj); |
| } |
| |
| static jboolean GetStaticBooleanField(JNIEnv* env, jclass, jfieldID fid) { |
| GET_STATIC_PRIMITIVE_FIELD(Boolean); |
| } |
| |
| static jbyte GetStaticByteField(JNIEnv* env, jclass, jfieldID fid) { |
| GET_STATIC_PRIMITIVE_FIELD(Byte); |
| } |
| |
| static jchar GetStaticCharField(JNIEnv* env, jclass, jfieldID fid) { |
| GET_STATIC_PRIMITIVE_FIELD(Char); |
| } |
| |
| static jshort GetStaticShortField(JNIEnv* env, jclass, jfieldID fid) { |
| GET_STATIC_PRIMITIVE_FIELD(Short); |
| } |
| |
| static jint GetStaticIntField(JNIEnv* env, jclass, jfieldID fid) { |
| GET_STATIC_PRIMITIVE_FIELD(Int); |
| } |
| |
| static jlong GetStaticLongField(JNIEnv* env, jclass, jfieldID fid) { |
| GET_STATIC_PRIMITIVE_FIELD(Long); |
| } |
| |
| static jfloat GetStaticFloatField(JNIEnv* env, jclass, jfieldID fid) { |
| GET_STATIC_PRIMITIVE_FIELD(Float); |
| } |
| |
| static jdouble GetStaticDoubleField(JNIEnv* env, jclass, jfieldID fid) { |
| GET_STATIC_PRIMITIVE_FIELD(Double); |
| } |
| |
| static void SetBooleanField(JNIEnv* env, jobject obj, jfieldID fid, jboolean v) { |
| SET_PRIMITIVE_FIELD(Boolean, obj, v); |
| } |
| |
| static void SetByteField(JNIEnv* env, jobject obj, jfieldID fid, jbyte v) { |
| SET_PRIMITIVE_FIELD(Byte, obj, v); |
| } |
| |
| static void SetCharField(JNIEnv* env, jobject obj, jfieldID fid, jchar v) { |
| SET_PRIMITIVE_FIELD(Char, obj, v); |
| } |
| |
| static void SetFloatField(JNIEnv* env, jobject obj, jfieldID fid, jfloat v) { |
| SET_PRIMITIVE_FIELD(Float, obj, v); |
| } |
| |
| static void SetDoubleField(JNIEnv* env, jobject obj, jfieldID fid, jdouble v) { |
| SET_PRIMITIVE_FIELD(Double, obj, v); |
| } |
| |
| static void SetIntField(JNIEnv* env, jobject obj, jfieldID fid, jint v) { |
| SET_PRIMITIVE_FIELD(Int, obj, v); |
| } |
| |
| static void SetLongField(JNIEnv* env, jobject obj, jfieldID fid, jlong v) { |
| SET_PRIMITIVE_FIELD(Long, obj, v); |
| } |
| |
| static void SetShortField(JNIEnv* env, jobject obj, jfieldID fid, jshort v) { |
| SET_PRIMITIVE_FIELD(Short, obj, v); |
| } |
| |
| static void SetStaticBooleanField(JNIEnv* env, jclass, jfieldID fid, jboolean v) { |
| SET_STATIC_PRIMITIVE_FIELD(Boolean, v); |
| } |
| |
| static void SetStaticByteField(JNIEnv* env, jclass, jfieldID fid, jbyte v) { |
| SET_STATIC_PRIMITIVE_FIELD(Byte, v); |
| } |
| |
| static void SetStaticCharField(JNIEnv* env, jclass, jfieldID fid, jchar v) { |
| SET_STATIC_PRIMITIVE_FIELD(Char, v); |
| } |
| |
| static void SetStaticFloatField(JNIEnv* env, jclass, jfieldID fid, jfloat v) { |
| SET_STATIC_PRIMITIVE_FIELD(Float, v); |
| } |
| |
| static void SetStaticDoubleField(JNIEnv* env, jclass, jfieldID fid, jdouble v) { |
| SET_STATIC_PRIMITIVE_FIELD(Double, v); |
| } |
| |
| static void SetStaticIntField(JNIEnv* env, jclass, jfieldID fid, jint v) { |
| SET_STATIC_PRIMITIVE_FIELD(Int, v); |
| } |
| |
| static void SetStaticLongField(JNIEnv* env, jclass, jfieldID fid, jlong v) { |
| SET_STATIC_PRIMITIVE_FIELD(Long, v); |
| } |
| |
| static void SetStaticShortField(JNIEnv* env, jclass, jfieldID fid, jshort v) { |
| SET_STATIC_PRIMITIVE_FIELD(Short, v); |
| } |
| |
| static jobject CallStaticObjectMethod(JNIEnv* env, jclass, jmethodID mid, ...) { |
| va_list ap; |
| va_start(ap, mid); |
| CHECK_NON_NULL_ARGUMENT(mid); |
| ScopedObjectAccess soa(env); |
| JValue result(InvokeWithVarArgs(soa, nullptr, mid, ap)); |
| jobject local_result = soa.AddLocalReference<jobject>(result.GetL()); |
| va_end(ap); |
| return local_result; |
| } |
| |
| static jobject CallStaticObjectMethodV(JNIEnv* env, jclass, jmethodID mid, va_list args) { |
| CHECK_NON_NULL_ARGUMENT(mid); |
| ScopedObjectAccess soa(env); |
| JValue result(InvokeWithVarArgs(soa, nullptr, mid, args)); |
| return soa.AddLocalReference<jobject>(result.GetL()); |
| } |
| |
| static jobject CallStaticObjectMethodA(JNIEnv* env, jclass, jmethodID mid, jvalue* args) { |
| CHECK_NON_NULL_ARGUMENT(mid); |
| ScopedObjectAccess soa(env); |
| JValue result(InvokeWithJValues(soa, nullptr, mid, args)); |
| return soa.AddLocalReference<jobject>(result.GetL()); |
| } |
| |
| static jboolean CallStaticBooleanMethod(JNIEnv* env, jclass, jmethodID mid, ...) { |
| va_list ap; |
| va_start(ap, mid); |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid); |
| ScopedObjectAccess soa(env); |
| JValue result(InvokeWithVarArgs(soa, nullptr, mid, ap)); |
| va_end(ap); |
| return result.GetZ(); |
| } |
| |
| static jboolean CallStaticBooleanMethodV(JNIEnv* env, jclass, jmethodID mid, va_list args) { |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid); |
| ScopedObjectAccess soa(env); |
| return InvokeWithVarArgs(soa, nullptr, mid, args).GetZ(); |
| } |
| |
| static jboolean CallStaticBooleanMethodA(JNIEnv* env, jclass, jmethodID mid, jvalue* args) { |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid); |
| ScopedObjectAccess soa(env); |
| return InvokeWithJValues(soa, nullptr, mid, args).GetZ(); |
| } |
| |
| static jbyte CallStaticByteMethod(JNIEnv* env, jclass, jmethodID mid, ...) { |
| va_list ap; |
| va_start(ap, mid); |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid); |
| ScopedObjectAccess soa(env); |
| JValue result(InvokeWithVarArgs(soa, nullptr, mid, ap)); |
| va_end(ap); |
| return result.GetB(); |
| } |
| |
| static jbyte CallStaticByteMethodV(JNIEnv* env, jclass, jmethodID mid, va_list args) { |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid); |
| ScopedObjectAccess soa(env); |
| return InvokeWithVarArgs(soa, nullptr, mid, args).GetB(); |
| } |
| |
| static jbyte CallStaticByteMethodA(JNIEnv* env, jclass, jmethodID mid, jvalue* args) { |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid); |
| ScopedObjectAccess soa(env); |
| return InvokeWithJValues(soa, nullptr, mid, args).GetB(); |
| } |
| |
| static jchar CallStaticCharMethod(JNIEnv* env, jclass, jmethodID mid, ...) { |
| va_list ap; |
| va_start(ap, mid); |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid); |
| ScopedObjectAccess soa(env); |
| JValue result(InvokeWithVarArgs(soa, nullptr, mid, ap)); |
| va_end(ap); |
| return result.GetC(); |
| } |
| |
| static jchar CallStaticCharMethodV(JNIEnv* env, jclass, jmethodID mid, va_list args) { |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid); |
| ScopedObjectAccess soa(env); |
| return InvokeWithVarArgs(soa, nullptr, mid, args).GetC(); |
| } |
| |
| static jchar CallStaticCharMethodA(JNIEnv* env, jclass, jmethodID mid, jvalue* args) { |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid); |
| ScopedObjectAccess soa(env); |
| return InvokeWithJValues(soa, nullptr, mid, args).GetC(); |
| } |
| |
| static jshort CallStaticShortMethod(JNIEnv* env, jclass, jmethodID mid, ...) { |
| va_list ap; |
| va_start(ap, mid); |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid); |
| ScopedObjectAccess soa(env); |
| JValue result(InvokeWithVarArgs(soa, nullptr, mid, ap)); |
| va_end(ap); |
| return result.GetS(); |
| } |
| |
| static jshort CallStaticShortMethodV(JNIEnv* env, jclass, jmethodID mid, va_list args) { |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid); |
| ScopedObjectAccess soa(env); |
| return InvokeWithVarArgs(soa, nullptr, mid, args).GetS(); |
| } |
| |
| static jshort CallStaticShortMethodA(JNIEnv* env, jclass, jmethodID mid, jvalue* args) { |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid); |
| ScopedObjectAccess soa(env); |
| return InvokeWithJValues(soa, nullptr, mid, args).GetS(); |
| } |
| |
| static jint CallStaticIntMethod(JNIEnv* env, jclass, jmethodID mid, ...) { |
| va_list ap; |
| va_start(ap, mid); |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid); |
| ScopedObjectAccess soa(env); |
| JValue result(InvokeWithVarArgs(soa, nullptr, mid, ap)); |
| va_end(ap); |
| return result.GetI(); |
| } |
| |
| static jint CallStaticIntMethodV(JNIEnv* env, jclass, jmethodID mid, va_list args) { |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid); |
| ScopedObjectAccess soa(env); |
| return InvokeWithVarArgs(soa, nullptr, mid, args).GetI(); |
| } |
| |
| static jint CallStaticIntMethodA(JNIEnv* env, jclass, jmethodID mid, jvalue* args) { |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid); |
| ScopedObjectAccess soa(env); |
| return InvokeWithJValues(soa, nullptr, mid, args).GetI(); |
| } |
| |
| static jlong CallStaticLongMethod(JNIEnv* env, jclass, jmethodID mid, ...) { |
| va_list ap; |
| va_start(ap, mid); |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid); |
| ScopedObjectAccess soa(env); |
| JValue result(InvokeWithVarArgs(soa, nullptr, mid, ap)); |
| va_end(ap); |
| return result.GetJ(); |
| } |
| |
| static jlong CallStaticLongMethodV(JNIEnv* env, jclass, jmethodID mid, va_list args) { |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid); |
| ScopedObjectAccess soa(env); |
| return InvokeWithVarArgs(soa, nullptr, mid, args).GetJ(); |
| } |
| |
| static jlong CallStaticLongMethodA(JNIEnv* env, jclass, jmethodID mid, jvalue* args) { |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid); |
| ScopedObjectAccess soa(env); |
| return InvokeWithJValues(soa, nullptr, mid, args).GetJ(); |
| } |
| |
| static jfloat CallStaticFloatMethod(JNIEnv* env, jclass, jmethodID mid, ...) { |
| va_list ap; |
| va_start(ap, mid); |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid); |
| ScopedObjectAccess soa(env); |
| JValue result(InvokeWithVarArgs(soa, nullptr, mid, ap)); |
| va_end(ap); |
| return result.GetF(); |
| } |
| |
| static jfloat CallStaticFloatMethodV(JNIEnv* env, jclass, jmethodID mid, va_list args) { |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid); |
| ScopedObjectAccess soa(env); |
| return InvokeWithVarArgs(soa, nullptr, mid, args).GetF(); |
| } |
| |
| static jfloat CallStaticFloatMethodA(JNIEnv* env, jclass, jmethodID mid, jvalue* args) { |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid); |
| ScopedObjectAccess soa(env); |
| return InvokeWithJValues(soa, nullptr, mid, args).GetF(); |
| } |
| |
| static jdouble CallStaticDoubleMethod(JNIEnv* env, jclass, jmethodID mid, ...) { |
| va_list ap; |
| va_start(ap, mid); |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid); |
| ScopedObjectAccess soa(env); |
| JValue result(InvokeWithVarArgs(soa, nullptr, mid, ap)); |
| va_end(ap); |
| return result.GetD(); |
| } |
| |
| static jdouble CallStaticDoubleMethodV(JNIEnv* env, jclass, jmethodID mid, va_list args) { |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid); |
| ScopedObjectAccess soa(env); |
| return InvokeWithVarArgs(soa, nullptr, mid, args).GetD(); |
| } |
| |
| static jdouble CallStaticDoubleMethodA(JNIEnv* env, jclass, jmethodID mid, jvalue* args) { |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(mid); |
| ScopedObjectAccess soa(env); |
| return InvokeWithJValues(soa, nullptr, mid, args).GetD(); |
| } |
| |
| static void CallStaticVoidMethod(JNIEnv* env, jclass, jmethodID mid, ...) { |
| va_list ap; |
| va_start(ap, mid); |
| CHECK_NON_NULL_ARGUMENT_RETURN_VOID(mid); |
| ScopedObjectAccess soa(env); |
| InvokeWithVarArgs(soa, nullptr, mid, ap); |
| va_end(ap); |
| } |
| |
| static void CallStaticVoidMethodV(JNIEnv* env, jclass, jmethodID mid, va_list args) { |
| CHECK_NON_NULL_ARGUMENT_RETURN_VOID(mid); |
| ScopedObjectAccess soa(env); |
| InvokeWithVarArgs(soa, nullptr, mid, args); |
| } |
| |
| static void CallStaticVoidMethodA(JNIEnv* env, jclass, jmethodID mid, jvalue* args) { |
| CHECK_NON_NULL_ARGUMENT_RETURN_VOID(mid); |
| ScopedObjectAccess soa(env); |
| InvokeWithJValues(soa, nullptr, mid, args); |
| } |
| |
| static jstring NewString(JNIEnv* env, const jchar* chars, jsize char_count) { |
| if (UNLIKELY(char_count < 0)) { |
| JniAbortF("NewString", "char_count < 0: %d", char_count); |
| return nullptr; |
| } |
| if (UNLIKELY(chars == nullptr && char_count > 0)) { |
| JniAbortF("NewString", "chars == null && char_count > 0"); |
| return nullptr; |
| } |
| ScopedObjectAccess soa(env); |
| mirror::String* result = mirror::String::AllocFromUtf16(soa.Self(), char_count, chars); |
| return soa.AddLocalReference<jstring>(result); |
| } |
| |
| static jstring NewStringUTF(JNIEnv* env, const char* utf) { |
| if (utf == nullptr) { |
| return nullptr; |
| } |
| ScopedObjectAccess soa(env); |
| mirror::String* result = mirror::String::AllocFromModifiedUtf8(soa.Self(), utf); |
| return soa.AddLocalReference<jstring>(result); |
| } |
| |
| static jsize GetStringLength(JNIEnv* env, jstring java_string) { |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(java_string); |
| ScopedObjectAccess soa(env); |
| return soa.Decode<mirror::String*>(java_string)->GetLength(); |
| } |
| |
| static jsize GetStringUTFLength(JNIEnv* env, jstring java_string) { |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(java_string); |
| ScopedObjectAccess soa(env); |
| return soa.Decode<mirror::String*>(java_string)->GetUtfLength(); |
| } |
| |
| static void GetStringRegion(JNIEnv* env, jstring java_string, jsize start, jsize length, |
| jchar* buf) { |
| CHECK_NON_NULL_ARGUMENT_RETURN_VOID(java_string); |
| ScopedObjectAccess soa(env); |
| mirror::String* s = soa.Decode<mirror::String*>(java_string); |
| if (start < 0 || length < 0 || start + length > s->GetLength()) { |
| ThrowSIOOBE(soa, start, length, s->GetLength()); |
| } else { |
| CHECK_NON_NULL_MEMCPY_ARGUMENT(length, buf); |
| const jchar* chars = s->GetCharArray()->GetData() + s->GetOffset(); |
| memcpy(buf, chars + start, length * sizeof(jchar)); |
| } |
| } |
| |
| static void GetStringUTFRegion(JNIEnv* env, jstring java_string, jsize start, jsize length, |
| char* buf) { |
| CHECK_NON_NULL_ARGUMENT_RETURN_VOID(java_string); |
| ScopedObjectAccess soa(env); |
| mirror::String* s = soa.Decode<mirror::String*>(java_string); |
| if (start < 0 || length < 0 || start + length > s->GetLength()) { |
| ThrowSIOOBE(soa, start, length, s->GetLength()); |
| } else { |
| CHECK_NON_NULL_MEMCPY_ARGUMENT(length, buf); |
| const jchar* chars = s->GetCharArray()->GetData() + s->GetOffset(); |
| ConvertUtf16ToModifiedUtf8(buf, chars + start, length); |
| } |
| } |
| |
| static const jchar* GetStringChars(JNIEnv* env, jstring java_string, jboolean* is_copy) { |
| CHECK_NON_NULL_ARGUMENT(java_string); |
| ScopedObjectAccess soa(env); |
| mirror::String* s = soa.Decode<mirror::String*>(java_string); |
| mirror::CharArray* chars = s->GetCharArray(); |
| PinPrimitiveArray(soa, chars); |
| gc::Heap* heap = Runtime::Current()->GetHeap(); |
| if (heap->IsMovableObject(chars)) { |
| if (is_copy != nullptr) { |
| *is_copy = JNI_TRUE; |
| } |
| int32_t char_count = s->GetLength(); |
| int32_t offset = s->GetOffset(); |
| jchar* bytes = new jchar[char_count]; |
| for (int32_t i = 0; i < char_count; i++) { |
| bytes[i] = chars->Get(i + offset); |
| } |
| return bytes; |
| } else { |
| if (is_copy != nullptr) { |
| *is_copy = JNI_FALSE; |
| } |
| return static_cast<jchar*>(chars->GetData() + s->GetOffset()); |
| } |
| } |
| |
| static void ReleaseStringChars(JNIEnv* env, jstring java_string, const jchar* chars) { |
| CHECK_NON_NULL_ARGUMENT_RETURN_VOID(java_string); |
| ScopedObjectAccess soa(env); |
| mirror::String* s = soa.Decode<mirror::String*>(java_string); |
| mirror::CharArray* s_chars = s->GetCharArray(); |
| if (chars != (s_chars->GetData() + s->GetOffset())) { |
| delete[] chars; |
| } |
| UnpinPrimitiveArray(soa, s->GetCharArray()); |
| } |
| |
| static const jchar* GetStringCritical(JNIEnv* env, jstring java_string, jboolean* is_copy) { |
| CHECK_NON_NULL_ARGUMENT(java_string); |
| ScopedObjectAccess soa(env); |
| mirror::String* s = soa.Decode<mirror::String*>(java_string); |
| mirror::CharArray* chars = s->GetCharArray(); |
| int32_t offset = s->GetOffset(); |
| PinPrimitiveArray(soa, chars); |
| gc::Heap* heap = Runtime::Current()->GetHeap(); |
| if (heap->IsMovableObject(chars)) { |
| StackHandleScope<1> hs(soa.Self()); |
| HandleWrapper<mirror::CharArray> h(hs.NewHandleWrapper(&chars)); |
| heap->IncrementDisableMovingGC(soa.Self()); |
| } |
| if (is_copy != nullptr) { |
| *is_copy = JNI_FALSE; |
| } |
| return static_cast<jchar*>(chars->GetData() + offset); |
| } |
| |
| static void ReleaseStringCritical(JNIEnv* env, jstring java_string, const jchar* chars) { |
| CHECK_NON_NULL_ARGUMENT_RETURN_VOID(java_string); |
| ScopedObjectAccess soa(env); |
| UnpinPrimitiveArray(soa, soa.Decode<mirror::String*>(java_string)->GetCharArray()); |
| gc::Heap* heap = Runtime::Current()->GetHeap(); |
| mirror::String* s = soa.Decode<mirror::String*>(java_string); |
| mirror::CharArray* s_chars = s->GetCharArray(); |
| if (heap->IsMovableObject(s_chars)) { |
| heap->DecrementDisableMovingGC(soa.Self()); |
| } |
| } |
| |
| static const char* GetStringUTFChars(JNIEnv* env, jstring java_string, jboolean* is_copy) { |
| if (java_string == nullptr) { |
| return nullptr; |
| } |
| if (is_copy != nullptr) { |
| *is_copy = JNI_TRUE; |
| } |
| ScopedObjectAccess soa(env); |
| mirror::String* s = soa.Decode<mirror::String*>(java_string); |
| size_t byte_count = s->GetUtfLength(); |
| char* bytes = new char[byte_count + 1]; |
| CHECK(bytes != nullptr); // bionic aborts anyway. |
| const uint16_t* chars = s->GetCharArray()->GetData() + s->GetOffset(); |
| ConvertUtf16ToModifiedUtf8(bytes, chars, s->GetLength()); |
| bytes[byte_count] = '\0'; |
| return bytes; |
| } |
| |
| static void ReleaseStringUTFChars(JNIEnv* env, jstring, const char* chars) { |
| delete[] chars; |
| } |
| |
| static jsize GetArrayLength(JNIEnv* env, jarray java_array) { |
| CHECK_NON_NULL_ARGUMENT_RETURN_ZERO(java_array); |
| ScopedObjectAccess soa(env); |
| mirror::Object* obj = soa.Decode<mirror::Object*>(java_array); |
| if (UNLIKELY(!obj->IsArrayInstance())) { |
| JniAbortF("GetArrayLength", "not an array: %s", PrettyTypeOf(obj).c_str()); |
| } |
| mirror::Array* array = obj->AsArray(); |
| return array->GetLength(); |
| } |
| |
| static jobject GetObjectArrayElement(JNIEnv* env, jobjectArray java_array, jsize index) { |
| CHECK_NON_NULL_ARGUMENT(java_array); |
| ScopedObjectAccess soa(env); |
| mirror::ObjectArray<mirror::Object>* array = |
| soa.Decode<mirror::ObjectArray<mirror::Object>*>(java_array); |
| return soa.AddLocalReference<jobject>(array->Get(index)); |
| } |
| |
| static void SetObjectArrayElement(JNIEnv* env, jobjectArray java_array, jsize index, |
| jobject java_value) { |
| CHECK_NON_NULL_ARGUMENT_RETURN_VOID(java_array); |
| ScopedObjectAccess soa(env); |
| mirror::ObjectArray<mirror::Object>* array = |
| soa.Decode<mirror::ObjectArray<mirror::Object>*>(java_array); |
| mirror::Object* value = soa.Decode<mirror::Object*>(java_value); |
| array->Set<false>(index, value); |
| } |
| |
| static jbooleanArray NewBooleanArray(JNIEnv* env, jsize length) { |
| return NewPrimitiveArray<jbooleanArray, mirror::BooleanArray>(env, length); |
| } |
| |
| static jbyteArray NewByteArray(JNIEnv* env, jsize length) { |
| return NewPrimitiveArray<jbyteArray, mirror::ByteArray>(env, length); |
| } |
| |
| static jcharArray NewCharArray(JNIEnv* env, jsize length) { |
| return NewPrimitiveArray<jcharArray, mirror::CharArray>(env, length); |
| } |
| |
| static jdoubleArray NewDoubleArray(JNIEnv* env, jsize length) { |
| return NewPrimitiveArray<jdoubleArray, mirror::DoubleArray>(env, length); |
| } |
| |
| static jfloatArray NewFloatArray(JNIEnv* env, jsize length) { |
| return NewPrimitiveArray<jfloatArray, mirror::FloatArray>(env, length); |
| } |
| |
| static jintArray NewIntArray(JNIEnv* env, jsize length) { |
| return NewPrimitiveArray<jintArray, mirror::IntArray>(env, length); |
| } |
| |
| static jlongArray NewLongArray(JNIEnv* env, jsize length) { |
| return NewPrimitiveArray<jlongArray, mirror::LongArray>(env, length); |
| } |
| |
| static jobjectArray NewObjectArray(JNIEnv* env, jsize length, jclass element_jclass, |
| jobject initial_element) { |
| if (UNLIKELY(length < 0)) { |
| JniAbortF("NewObjectArray", "negative array length: %d", length); |
| return nullptr; |
| } |
| CHECK_NON_NULL_ARGUMENT(element_jclass); |
| |
| // Compute the array class corresponding to the given element class. |
| ScopedObjectAccess soa(env); |
| mirror::Class* array_class; |
| { |
| mirror::Class* element_class = soa.Decode<mirror::Class*>(element_jclass); |
| if (UNLIKELY(element_class->IsPrimitive())) { |
| JniAbortF("NewObjectArray", "not an object type: %s", |
| PrettyDescriptor(element_class).c_str()); |
| return nullptr; |
| } |
| ClassLinker* class_linker = Runtime::Current()->GetClassLinker(); |
| array_class = class_linker->FindArrayClass(soa.Self(), &element_class); |
| if (UNLIKELY(array_class == nullptr)) { |
| return nullptr; |
| } |
| } |
| |
| // Allocate and initialize if necessary. |
| mirror::ObjectArray<mirror::Object>* result = |
| mirror::ObjectArray<mirror::Object>::Alloc(soa.Self(), array_class, length); |
| if (result != nullptr && initial_element != nullptr) { |
| mirror::Object* initial_object = soa.Decode<mirror::Object*>(initial_element); |
| if (initial_object != nullptr) { |
| mirror::Class* element_class = result->GetClass()->GetComponentType(); |
| if (UNLIKELY(!element_class->IsAssignableFrom(initial_object->GetClass()))) { |
| JniAbortF("NewObjectArray", "cannot assign object of type '%s' to array with element " |
| "type of '%s'", PrettyDescriptor(initial_object->GetClass()).c_str(), |
| PrettyDescriptor(element_class).c_str()); |
| |
| } else { |
| for (jsize i = 0; i < length; ++i) { |
| result->SetWithoutChecks<false>(i, initial_object); |
| } |
| } |
| } |
| } |
| return soa.AddLocalReference<jobjectArray>(result); |
| } |
| |
| static jshortArray NewShortArray(JNIEnv* env, jsize length) { |
| return NewPrimitiveArray<jshortArray, mirror::ShortArray>(env, length); |
| } |
| |
| static void* GetPrimitiveArrayCritical(JNIEnv* env, jarray java_array, jboolean* is_copy) { |
| CHECK_NON_NULL_ARGUMENT(java_array); |
| ScopedObjectAccess soa(env); |
| mirror::Array* array = soa.Decode<mirror::Array*>(java_array); |
| if (UNLIKELY(!array->GetClass()->IsPrimitiveArray())) { |
| JniAbortF("GetPrimitiveArrayCritical", "expected primitive array, given %s", |
| PrettyDescriptor(array->GetClass()).c_str()); |
| return nullptr; |
| } |
| gc::Heap* heap = Runtime::Current()->GetHeap(); |
| if (heap->IsMovableObject(array)) { |
| heap->IncrementDisableMovingGC(soa.Self()); |
| // Re-decode in case the object moved since IncrementDisableGC waits for GC to complete. |
| array = soa.Decode<mirror::Array*>(java_array); |
| } |
| PinPrimitiveArray(soa, array); |
| if (is_copy != nullptr) { |
| *is_copy = JNI_FALSE; |
| } |
| return array->GetRawData(array->GetClass()->GetComponentSize(), 0); |
| } |
| |
| static void ReleasePrimitiveArrayCritical(JNIEnv* env, jarray java_array, void* elements, |
| jint mode) { |
| CHECK_NON_NULL_ARGUMENT_RETURN_VOID(java_array); |
| ScopedObjectAccess soa(env); |
| mirror::Array* array = soa.Decode<mirror::Array*>(java_array); |
| if (UNLIKELY(!array->GetClass()->IsPrimitiveArray())) { |
| JniAbortF("ReleasePrimitiveArrayCritical", "expected primitive array, given %s", |
| PrettyDescriptor(array->GetClass()).c_str()); |
| return; |
| } |
| const size_t component_size = array->GetClass()->GetComponentSize(); |
| ReleasePrimitiveArray(soa, array, component_size, elements, mode); |
| } |
| |
| static jboolean* GetBooleanArrayElements(JNIEnv* env, jbooleanArray array, jboolean* is_copy) { |
| return GetPrimitiveArray<jbooleanArray, jboolean, mirror::BooleanArray>(env, array, is_copy); |
| } |
| |
| static jbyte* GetByteArrayElements(JNIEnv* env, jbyteArray array, jboolean* is_copy) { |
| return GetPrimitiveArray<jbyteArray, jbyte, mirror::ByteArray>(env, array, is_copy); |
| } |
| |
| static jchar* GetCharArrayElements(JNIEnv* env, jcharArray array, jboolean* is_copy) { |
| return GetPrimitiveArray<jcharArray, jchar, mirror::CharArray>(env, array, is_copy); |
| } |
| |
| static jdouble* GetDoubleArrayElements(JNIEnv* env, jdoubleArray array, jboolean* is_copy) { |
| return GetPrimitiveArray<jdoubleArray, jdouble, mirror::DoubleArray>(env, array, is_copy); |
| } |
| |
| static jfloat* GetFloatArrayElements(JNIEnv* env, jfloatArray array, jboolean* is_copy) { |
| return GetPrimitiveArray<jfloatArray, jfloat, mirror::FloatArray>(env, array, is_copy); |
| } |
| |
| static jint* GetIntArrayElements(JNIEnv* env, jintArray array, jboolean* is_copy) { |
| return GetPrimitiveArray<jintArray, jint, mirror::IntArray>(env, array, is_copy); |
| } |
| |
| static jlong* GetLongArrayElements(JNIEnv* env, jlongArray array, jboolean* is_copy) { |
| return GetPrimitiveArray<jlongArray, jlong, mirror::LongArray>(env, array, is_copy); |
| } |
| |
| static jshort* GetShortArrayElements(JNIEnv* env, jshortArray array, jboolean* is_copy) { |
| return GetPrimitiveArray<jshortArray, jshort, mirror::ShortArray>(env, array, is_copy); |
| } |
| |
| static void ReleaseBooleanArrayElements(JNIEnv* env, jbooleanArray array, jboolean* elements, |
| jint mode) { |
| ReleasePrimitiveArray<jbooleanArray, jboolean, mirror::BooleanArray>(env, array, elements, |
| mode); |
| } |
| |
| static void ReleaseByteArrayElements(JNIEnv* env, jbyteArray array, jbyte* elements, jint mode) { |
| ReleasePrimitiveArray<jbyteArray, jbyte, mirror::ByteArray>(env, array, elements, mode); |
| } |
| |
| static void ReleaseCharArrayElements(JNIEnv* env, jcharArray array, jchar* elements, jint mode) { |
| ReleasePrimitiveArray<jcharArray, jchar, mirror::CharArray>(env, array, elements, mode); |
| } |
| |
| static void ReleaseDoubleArrayElements(JNIEnv* env, jdoubleArray array, jdouble* elements, |
| jint mode) { |
| ReleasePrimitiveArray<jdoubleArray, jdouble, mirror::DoubleArray>(env, array, elements, mode); |
| } |
| |
| static void ReleaseFloatArrayElements(JNIEnv* env, jfloatArray array, jfloat* elements, |
| jint mode) { |
| ReleasePrimitiveArray<jfloatArray, jfloat, mirror::FloatArray>(env, array, elements, mode); |
| } |
| |
| static void ReleaseIntArrayElements(JNIEnv* env, jintArray array, jint* elements, jint mode) { |
| ReleasePrimitiveArray<jintArray, jint, mirror::IntArray>(env, array, elements, mode); |
| } |
| |
| static void ReleaseLongArrayElements(JNIEnv* env, jlongArray array, jlong* elements, jint mode) { |
| ReleasePrimitiveArray<jlongArray, jlong, mirror::LongArray>(env, array, elements, mode); |
| } |
| |
| static void ReleaseShortArrayElements(JNIEnv* env, jshortArray array, jshort* elements, |
| jint mode) { |
| ReleasePrimitiveArray<jshortArray, jshort, mirror::ShortArray>(env, array, elements, mode); |
| } |
| |
| static void GetBooleanArrayRegion(JNIEnv* env, jbooleanArray array, jsize start, jsize length, |
| jboolean* buf) { |
| GetPrimitiveArrayRegion<jbooleanArray, jboolean, mirror::BooleanArray>(env, array, start, |
| length, buf); |
| } |
| |
| static void GetByteArrayRegion(JNIEnv* env, jbyteArray array, jsize start, jsize length, |
| jbyte* buf) { |
| GetPrimitiveArrayRegion<jbyteArray, jbyte, mirror::ByteArray>(env, array, start, length, buf); |
| } |
| |
| static void GetCharArrayRegion(JNIEnv* env, jcharArray array, jsize start, jsize length, |
| jchar* buf) { |
| GetPrimitiveArrayRegion<jcharArray, jchar, mirror::CharArray>(env, array, start, length, buf); |
| } |
| |
| static void GetDoubleArrayRegion(JNIEnv* env, jdoubleArray array, jsize start, jsize length, |
| jdouble* buf) { |
| GetPrimitiveArrayRegion<jdoubleArray, jdouble, mirror::DoubleArray>(env, array, start, length, |
| buf); |
| } |
| |
| static void GetFloatArrayRegion(JNIEnv* env, jfloatArray array, jsize start, jsize length, |
| jfloat* buf) { |
| GetPrimitiveArrayRegion<jfloatArray, jfloat, mirror::FloatArray>(env, array, start, length, |
| buf); |
| } |
| |
| static void GetIntArrayRegion(JNIEnv* env, jintArray array, jsize start, jsize length, |
| jint* buf) { |
| GetPrimitiveArrayRegion<jintArray, jint, mirror::IntArray>(env, array, start, length, buf); |
| } |
| |
| static void GetLongArrayRegion(JNIEnv* env, jlongArray array, jsize start, jsize length, |
| jlong* buf) { |
| GetPrimitiveArrayRegion<jlongArray, jlong, mirror::LongArray>(env, array, start, length, buf); |
| } |
| |
| static void GetShortArrayRegion(JNIEnv* env, jshortArray array, jsize start, jsize length, |
| jshort* buf) { |
| GetPrimitiveArrayRegion<jshortArray, jshort, mirror::ShortArray>(env, array, start, length, |
| buf); |
| } |
| |
| static void SetBooleanArrayRegion(JNIEnv* env, jbooleanArray array, jsize start, jsize length, |
| const jboolean* buf) { |
| SetPrimitiveArrayRegion<jbooleanArray, jboolean, mirror::BooleanArray>(env, array, start, |
| length, buf); |
| } |
| |
| static void SetByteArrayRegion(JNIEnv* env, jbyteArray array, jsize start, jsize length, |
| const jbyte* buf) { |
| SetPrimitiveArrayRegion<jbyteArray, jbyte, mirror::ByteArray>(env, array, start, length, buf); |
| } |
| |
| static void SetCharArrayRegion(JNIEnv* env, jcharArray array, jsize start, jsize length, |
| const jchar* buf) { |
| SetPrimitiveArrayRegion<jcharArray, jchar, mirror::CharArray>(env, array, start, length, buf); |
| } |
| |
| static void SetDoubleArrayRegion(JNIEnv* env, jdoubleArray array, jsize start, jsize length, |
| const jdouble* buf) { |
| SetPrimitiveArrayRegion<jdoubleArray, jdouble, mirror::DoubleArray>(env, array, start, length, |
| buf); |
| } |
| |
| static void SetFloatArrayRegion(JNIEnv* env, jfloatArray array, jsize start, jsize length, |
| const jfloat* buf) { |
| SetPrimitiveArrayRegion<jfloatArray, jfloat, mirror::FloatArray>(env, array, start, length, |
| buf); |
| } |
| |
| static void SetIntArrayRegion(JNIEnv* env, jintArray array, jsize start, jsize length, |
| const jint* buf) { |
| SetPrimitiveArrayRegion<jintArray, jint, mirror::IntArray>(env, array, start, length, buf); |
| } |
| |
| static void SetLongArrayRegion(JNIEnv* env, jlongArray array, jsize start, jsize length, |
| const jlong* buf) { |
| SetPrimitiveArrayRegion<jlongArray, jlong, mirror::LongArray>(env, array, start, length, buf); |
| } |
| |
| static void SetShortArrayRegion(JNIEnv* env, jshortArray array, jsize start, jsize length, |
| const jshort* buf) { |
| SetPrimitiveArrayRegion<jshortArray, jshort, mirror::ShortArray>(env, array, start, length, |
| buf); |
| } |
| |
| static jint RegisterNatives(JNIEnv* env, jclass java_class, const JNINativeMethod* methods, |
| jint method_count) { |
| return RegisterNativeMethods(env, java_class, methods, method_count, true); |
| } |
| |
| static jint RegisterNativeMethods(JNIEnv* env, jclass java_class, const JNINativeMethod* methods, |
| jint method_count, bool return_errors) { |
| if (UNLIKELY(method_count < 0)) { |
| JniAbortF("RegisterNatives", "negative method count: %d", method_count); |
| return JNI_ERR; // Not reached. |
| } |
| CHECK_NON_NULL_ARGUMENT_FN_NAME("RegisterNatives", java_class, JNI_ERR); |
| ScopedObjectAccess soa(env); |
| mirror::Class* c = soa.Decode<mirror::Class*>(java_class); |
| if (UNLIKELY(method_count == 0)) { |
| LOG(WARNING) << "JNI RegisterNativeMethods: attempt to register 0 native methods for " |
| << PrettyDescriptor(c); |
| return JNI_OK; |
| } |
| CHECK_NON_NULL_ARGUMENT_FN_NAME("RegisterNatives", methods, JNI_ERR); |
| for (jint i = 0; i < method_count; ++i) { |
| const char* name = methods[i].name; |
| const char* sig = methods[i].signature; |
| bool is_fast = false; |
| if (*sig == '!') { |
| is_fast = true; |
| ++sig; |
| } |
| |
| mirror::ArtMethod* m = c->FindDirectMethod(name, sig); |
| if (m == nullptr) { |
| m = c->FindVirtualMethod(name, sig); |
| } |
| if (m == nullptr) { |
| c->DumpClass(LOG(ERROR), mirror::Class::kDumpClassFullDetail); |
| LOG(return_errors ? ERROR : FATAL) << "Failed to register native method " |
| << PrettyDescriptor(c) << "." << name << sig << " in " |
| << c->GetDexCache()->GetLocation()->ToModifiedUtf8(); |
| ThrowNoSuchMethodError(soa, c, name, sig, "static or non-static"); |
| return JNI_ERR; |
| } else if (!m->IsNative()) { |
| LOG(return_errors ? ERROR : FATAL) << "Failed to register non-native method " |
| << PrettyDescriptor(c) << "." << name << sig |
| << " as native"; |
| ThrowNoSuchMethodError(soa, c, name, sig, "native"); |
| return JNI_ERR; |
| } |
| |
| VLOG(jni) << "[Registering JNI native method " << PrettyMethod(m) << "]"; |
| |
| m->RegisterNative(soa.Self(), methods[i].fnPtr, is_fast); |
| } |
| return JNI_OK; |
| } |
| |
| static jint UnregisterNatives(JNIEnv* env, jclass java_class) { |
| CHECK_NON_NULL_ARGUMENT_RETURN(java_class, JNI_ERR); |
| ScopedObjectAccess soa(env); |
| mirror::Class* c = soa.Decode<mirror::Class*>(java_class); |
| |
| VLOG(jni) << "[Unregistering JNI native methods for " << PrettyClass(c) << "]"; |
| |
| size_t unregistered_count = 0; |
| for (size_t i = 0; i < c->NumDirectMethods(); ++i) { |
| mirror::ArtMethod* m = c->GetDirectMethod(i); |
| if (m->IsNative()) { |
| m->UnregisterNative(soa.Self()); |
| unregistered_count++; |
| } |
| } |
| for (size_t i = 0; i < c->NumVirtualMethods(); ++i) { |
| mirror::ArtMethod* m = c->GetVirtualMethod(i); |
| if (m->IsNative()) { |
| m->UnregisterNative(soa.Self()); |
| unregistered_count++; |
| } |
| } |
| |
| if (unregistered_count == 0) { |
| LOG(WARNING) << "JNI UnregisterNatives: attempt to unregister native methods of class '" |
| << PrettyDescriptor(c) << "' that contains no native methods"; |
| } |
| return JNI_OK; |
| } |
| |
| static jint MonitorEnter(JNIEnv* env, jobject java_object) NO_THREAD_SAFETY_ANALYSIS { |
| CHECK_NON_NULL_ARGUMENT_RETURN(java_object, JNI_ERR); |
| ScopedObjectAccess soa(env); |
| mirror::Object* o = soa.Decode<mirror::Object*>(java_object); |
| o = o->MonitorEnter(soa.Self()); |
| if (soa.Self()->IsExceptionPending()) { |
| return JNI_ERR; |
| } |
| soa.Env()->monitors.Add(o); |
| return JNI_OK; |
| } |
| |
| static jint MonitorExit(JNIEnv* env, jobject java_object) NO_THREAD_SAFETY_ANALYSIS { |
| CHECK_NON_NULL_ARGUMENT_RETURN(java_object, JNI_ERR); |
| ScopedObjectAccess soa(env); |
| mirror::Object* o = soa.Decode<mirror::Object*>(java_object); |
| o->MonitorExit(soa.Self()); |
| if (soa.Self()->IsExceptionPending()) { |
| return JNI_ERR; |
| } |
| soa.Env()->monitors.Remove(o); |
| return JNI_OK; |
| } |
| |
| static jint GetJavaVM(JNIEnv* env, JavaVM** vm) { |
| CHECK_NON_NULL_ARGUMENT_RETURN(vm, JNI_ERR); |
| Runtime* runtime = Runtime::Current(); |
| if (runtime != nullptr) { |
| *vm = runtime->GetJavaVM(); |
| } else { |
| *vm = nullptr; |
| } |
| return (*vm != nullptr) ? JNI_OK : JNI_ERR; |
| } |
| |
| static jobject NewDirectByteBuffer(JNIEnv* env, void* address, jlong capacity) { |
| if (capacity < 0) { |
| JniAbortF("NewDirectByteBuffer", "negative buffer capacity: %" PRId64, capacity); |
| } |
| if (address == nullptr && capacity != 0) { |
| JniAbortF("NewDirectByteBuffer", "non-zero capacity for nullptr pointer: %" PRId64, capacity); |
| } |
| |
| // At the moment, the capacity is limited to 32 bits. |
| CHECK_LE(capacity, 0xffffffff); |
| jlong address_arg = reinterpret_cast<jlong>(address); |
| jint capacity_arg = static_cast<jint>(capacity); |
| |
| jobject result = env->NewObject(WellKnownClasses::java_nio_DirectByteBuffer, |
| WellKnownClasses::java_nio_DirectByteBuffer_init, |
| address_arg, capacity_arg); |
| return static_cast<JNIEnvExt*>(env)->self->IsExceptionPending() ? nullptr : result; |
| } |
| |
| static void* GetDirectBufferAddress(JNIEnv* env, jobject java_buffer) { |
| return reinterpret_cast<void*>(env->GetLongField( |
| java_buffer, WellKnownClasses::java_nio_DirectByteBuffer_effectiveDirectAddress)); |
| } |
| |
| static jlong GetDirectBufferCapacity(JNIEnv* env, jobject java_buffer) { |
| return static_cast<jlong>(env->GetIntField( |
| java_buffer, WellKnownClasses::java_nio_DirectByteBuffer_capacity)); |
| } |
| |
| static jobjectRefType GetObjectRefType(JNIEnv* env, jobject java_object) { |
| CHECK_NON_NULL_ARGUMENT_RETURN(java_object, JNIInvalidRefType); |
| |
| // Do we definitely know what kind of reference this is? |
| IndirectRef ref = reinterpret_cast<IndirectRef>(java_object); |
| IndirectRefKind kind = GetIndirectRefKind(ref); |
| switch (kind) { |
| case kLocal: { |
| ScopedObjectAccess soa(env); |
| // The local refs don't need a read barrier. |
| if (static_cast<JNIEnvExt*>(env)->locals.Get<kWithoutReadBarrier>(ref) != |
| kInvalidIndirectRefObject) { |
| return JNILocalRefType; |
| } |
| return JNIInvalidRefType; |
| } |
| case kGlobal: |
| return JNIGlobalRefType; |
| case kWeakGlobal: |
| return JNIWeakGlobalRefType; |
| case kHandleScopeOrInvalid: |
| // Is it in a stack IRT? |
| if (static_cast<JNIEnvExt*>(env)->self->HandleScopeContains(java_object)) { |
| return JNILocalRefType; |
| } |
| return JNIInvalidRefType; |
| } |
| LOG(FATAL) << "IndirectRefKind[" << kind << "]"; |
| return JNIInvalidRefType; |
| } |
| |
| private: |
| static jint EnsureLocalCapacity(ScopedObjectAccess& soa, jint desired_capacity, |
| const char* caller) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| // TODO: we should try to expand the table if necessary. |
| if (desired_capacity < 0 || desired_capacity > static_cast<jint>(kLocalsMax)) { |
| LOG(ERROR) << "Invalid capacity given to " << caller << ": " << desired_capacity; |
| return JNI_ERR; |
| } |
| // TODO: this isn't quite right, since "capacity" includes holes. |
| const size_t capacity = soa.Env()->locals.Capacity(); |
| bool okay = (static_cast<jint>(kLocalsMax - capacity) >= desired_capacity); |
| if (!okay) { |
| soa.Self()->ThrowOutOfMemoryError(caller); |
| } |
| return okay ? JNI_OK : JNI_ERR; |
| } |
| |
| template<typename JniT, typename ArtT> |
| static JniT NewPrimitiveArray(JNIEnv* env, jsize length) { |
| if (UNLIKELY(length < 0)) { |
| JniAbortF("NewPrimitiveArray", "negative array length: %d", length); |
| return nullptr; |
| } |
| ScopedObjectAccess soa(env); |
| ArtT* result = ArtT::Alloc(soa.Self(), length); |
| return soa.AddLocalReference<JniT>(result); |
| } |
| |
| template <typename JArrayT, typename ElementT, typename ArtArrayT> |
| static ArtArrayT* DecodeAndCheckArrayType(ScopedObjectAccess& soa, JArrayT java_array, |
| const char* fn_name, const char* operation) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| ArtArrayT* array = soa.Decode<ArtArrayT*>(java_array); |
| if (UNLIKELY(ArtArrayT::GetArrayClass() != array->GetClass())) { |
| JniAbortF(fn_name, "attempt to %s %s primitive array elements with an object of type %s", |
| operation, PrettyDescriptor(ArtArrayT::GetArrayClass()->GetComponentType()).c_str(), |
| PrettyDescriptor(array->GetClass()).c_str()); |
| return nullptr; |
| } |
| DCHECK_EQ(sizeof(ElementT), array->GetClass()->GetComponentSize()); |
| return array; |
| } |
| |
| template <typename ArrayT, typename ElementT, typename ArtArrayT> |
| static ElementT* GetPrimitiveArray(JNIEnv* env, ArrayT java_array, jboolean* is_copy) { |
| CHECK_NON_NULL_ARGUMENT(java_array); |
| ScopedObjectAccess soa(env); |
| ArtArrayT* array = DecodeAndCheckArrayType<ArrayT, ElementT, ArtArrayT>(soa, java_array, |
| "GetArrayElements", |
| "get"); |
| if (UNLIKELY(array == nullptr)) { |
| return nullptr; |
| } |
| PinPrimitiveArray(soa, array); |
| // Only make a copy if necessary. |
| if (Runtime::Current()->GetHeap()->IsMovableObject(array)) { |
| if (is_copy != nullptr) { |
| *is_copy = JNI_TRUE; |
| } |
| const size_t component_size = sizeof(ElementT); |
| size_t size = array->GetLength() * component_size; |
| void* data = new uint64_t[RoundUp(size, 8) / 8]; |
| memcpy(data, array->GetData(), size); |
| return reinterpret_cast<ElementT*>(data); |
| } else { |
| if (is_copy != nullptr) { |
| *is_copy = JNI_FALSE; |
| } |
| return reinterpret_cast<ElementT*>(array->GetData()); |
| } |
| } |
| |
| template <typename ArrayT, typename ElementT, typename ArtArrayT> |
| static void ReleasePrimitiveArray(JNIEnv* env, ArrayT java_array, ElementT* elements, jint mode) { |
| CHECK_NON_NULL_ARGUMENT_RETURN_VOID(java_array); |
| ScopedObjectAccess soa(env); |
| ArtArrayT* array = DecodeAndCheckArrayType<ArrayT, ElementT, ArtArrayT>(soa, java_array, |
| "ReleaseArrayElements", |
| "release"); |
| if (array == nullptr) { |
| return; |
| } |
| ReleasePrimitiveArray(soa, array, sizeof(ElementT), elements, mode); |
| } |
| |
| static void ReleasePrimitiveArray(ScopedObjectAccess& soa, mirror::Array* array, |
| size_t component_size, void* elements, jint mode) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| void* array_data = array->GetRawData(component_size, 0); |
| gc::Heap* heap = Runtime::Current()->GetHeap(); |
| bool is_copy = array_data != elements; |
| size_t bytes = array->GetLength() * component_size; |
| VLOG(heap) << "Release primitive array " << soa.Env() << " array_data " << array_data |
| << " elements " << elements; |
| if (is_copy) { |
| // Sanity check: If elements is not the same as the java array's data, it better not be a |
| // heap address. TODO: This might be slow to check, may be worth keeping track of which |
| // copies we make? |
| if (heap->IsNonDiscontinuousSpaceHeapAddress(reinterpret_cast<mirror::Object*>(elements))) { |
| JniAbortF("ReleaseArrayElements", "invalid element pointer %p, array elements are %p", |
| reinterpret_cast<void*>(elements), array_data); |
| return; |
| } |
| } |
| // Don't need to copy if we had a direct pointer. |
| if (mode != JNI_ABORT && is_copy) { |
| memcpy(array_data, elements, bytes); |
| } |
| if (mode != JNI_COMMIT) { |
| if (is_copy) { |
| delete[] reinterpret_cast<uint64_t*>(elements); |
| } else if (heap->IsMovableObject(array)) { |
| // Non copy to a movable object must means that we had disabled the moving GC. |
| heap->DecrementDisableMovingGC(soa.Self()); |
| } |
| UnpinPrimitiveArray(soa, array); |
| } |
| } |
| |
| template <typename JArrayT, typename ElementT, typename ArtArrayT> |
| static void GetPrimitiveArrayRegion(JNIEnv* env, JArrayT java_array, |
| jsize start, jsize length, ElementT* buf) { |
| CHECK_NON_NULL_ARGUMENT_RETURN_VOID(java_array); |
| ScopedObjectAccess soa(env); |
| ArtArrayT* array = |
| DecodeAndCheckArrayType<JArrayT, ElementT, ArtArrayT>(soa, java_array, |
| "GetPrimitiveArrayRegion", |
| "get region of"); |
| if (array != nullptr) { |
| if (start < 0 || length < 0 || start + length > array->GetLength()) { |
| ThrowAIOOBE(soa, array, start, length, "src"); |
| } else { |
| CHECK_NON_NULL_MEMCPY_ARGUMENT(length, buf); |
| ElementT* data = array->GetData(); |
| memcpy(buf, data + start, length * sizeof(ElementT)); |
| } |
| } |
| } |
| |
| template <typename JArrayT, typename ElementT, typename ArtArrayT> |
| static void SetPrimitiveArrayRegion(JNIEnv* env, JArrayT java_array, |
| jsize start, jsize length, const ElementT* buf) { |
| CHECK_NON_NULL_ARGUMENT_RETURN_VOID(java_array); |
| ScopedObjectAccess soa(env); |
| ArtArrayT* array = |
| DecodeAndCheckArrayType<JArrayT, ElementT, ArtArrayT>(soa, java_array, |
| "SetPrimitiveArrayRegion", |
| "set region of"); |
| if (array != nullptr) { |
| if (start < 0 || length < 0 || start + length > array->GetLength()) { |
| ThrowAIOOBE(soa, array, start, length, "dst"); |
| } else { |
| CHECK_NON_NULL_MEMCPY_ARGUMENT(length, buf); |
| ElementT* data = array->GetData(); |
| memcpy(data + start, buf, length * sizeof(ElementT)); |
| } |
| } |
| } |
| }; |
| |
| const JNINativeInterface gJniNativeInterface = { |
| nullptr, // reserved0. |
| nullptr, // reserved1. |
| nullptr, // reserved2. |
| nullptr, // reserved3. |
| JNI::GetVersion, |
| JNI::DefineClass, |
| JNI::FindClass, |
| JNI::FromReflectedMethod, |
| JNI::FromReflectedField, |
| JNI::ToReflectedMethod, |
| JNI::GetSuperclass, |
| JNI::IsAssignableFrom, |
| JNI::ToReflectedField, |
| JNI::Throw, |
| JNI::ThrowNew, |
| JNI::ExceptionOccurred, |
| JNI::ExceptionDescribe, |
| JNI::ExceptionClear, |
| JNI::FatalError, |
| JNI::PushLocalFrame, |
| JNI::PopLocalFrame, |
| JNI::NewGlobalRef, |
| JNI::DeleteGlobalRef, |
| JNI::DeleteLocalRef, |
| JNI::IsSameObject, |
| JNI::NewLocalRef, |
| JNI::EnsureLocalCapacity, |
| JNI::AllocObject, |
| JNI::NewObject, |
| JNI::NewObjectV, |
| JNI::NewObjectA, |
| JNI::GetObjectClass, |
| JNI::IsInstanceOf, |
| JNI::GetMethodID, |
| JNI::CallObjectMethod, |
| JNI::CallObjectMethodV, |
| JNI::CallObjectMethodA, |
| JNI::CallBooleanMethod, |
| JNI::CallBooleanMethodV, |
| JNI::CallBooleanMethodA, |
| JNI::CallByteMethod, |
| JNI::CallByteMethodV, |
| JNI::CallByteMethodA, |
| JNI::CallCharMethod, |
| JNI::CallCharMethodV, |
| JNI::CallCharMethodA, |
| JNI::CallShortMethod, |
| JNI::CallShortMethodV, |
| JNI::CallShortMethodA, |
| JNI::CallIntMethod, |
| JNI::CallIntMethodV, |
| JNI::CallIntMethodA, |
| JNI::CallLongMethod, |
| JNI::CallLongMethodV, |
| JNI::CallLongMethodA, |
| JNI::CallFloatMethod, |
| JNI::CallFloatMethodV, |
| JNI::CallFloatMethodA, |
| JNI::CallDoubleMethod, |
| JNI::CallDoubleMethodV, |
| JNI::CallDoubleMethodA, |
| JNI::CallVoidMethod, |
| JNI::CallVoidMethodV, |
| JNI::CallVoidMethodA, |
| JNI::CallNonvirtualObjectMethod, |
| JNI::CallNonvirtualObjectMethodV, |
| JNI::CallNonvirtualObjectMethodA, |
| JNI::CallNonvirtualBooleanMethod, |
| JNI::CallNonvirtualBooleanMethodV, |
| JNI::CallNonvirtualBooleanMethodA, |
| JNI::CallNonvirtualByteMethod, |
| JNI::CallNonvirtualByteMethodV, |
| JNI::CallNonvirtualByteMethodA, |
| JNI::CallNonvirtualCharMethod, |
| JNI::CallNonvirtualCharMethodV, |
| JNI::CallNonvirtualCharMethodA, |
| JNI::CallNonvirtualShortMethod, |
| JNI::CallNonvirtualShortMethodV, |
| JNI::CallNonvirtualShortMethodA, |
| JNI::CallNonvirtualIntMethod, |
| JNI::CallNonvirtualIntMethodV, |
| JNI::CallNonvirtualIntMethodA, |
| JNI::CallNonvirtualLongMethod, |
| JNI::CallNonvirtualLongMethodV, |
| JNI::CallNonvirtualLongMethodA, |
| JNI::CallNonvirtualFloatMethod, |
| JNI::CallNonvirtualFloatMethodV, |
| JNI::CallNonvirtualFloatMethodA, |
| JNI::CallNonvirtualDoubleMethod, |
| JNI::CallNonvirtualDoubleMethodV, |
| JNI::CallNonvirtualDoubleMethodA, |
| JNI::CallNonvirtualVoidMethod, |
| JNI::CallNonvirtualVoidMethodV, |
| JNI::CallNonvirtualVoidMethodA, |
| JNI::GetFieldID, |
| JNI::GetObjectField, |
| JNI::GetBooleanField, |
| JNI::GetByteField, |
| JNI::GetCharField, |
| JNI::GetShortField, |
| JNI::GetIntField, |
| JNI::GetLongField, |
| JNI::GetFloatField, |
| JNI::GetDoubleField, |
| JNI::SetObjectField, |
| JNI::SetBooleanField, |
| JNI::SetByteField, |
| JNI::SetCharField, |
| JNI::SetShortField, |
| JNI::SetIntField, |
| JNI::SetLongField, |
| JNI::SetFloatField, |
| JNI::SetDoubleField, |
| JNI::GetStaticMethodID, |
| JNI::CallStaticObjectMethod, |
| JNI::CallStaticObjectMethodV, |
| JNI::CallStaticObjectMethodA, |
| JNI::CallStaticBooleanMethod, |
| JNI::CallStaticBooleanMethodV, |
| JNI::CallStaticBooleanMethodA, |
| JNI::CallStaticByteMethod, |
| JNI::CallStaticByteMethodV, |
| JNI::CallStaticByteMethodA, |
| JNI::CallStaticCharMethod, |
| JNI::CallStaticCharMethodV, |
| JNI::CallStaticCharMethodA, |
| JNI::CallStaticShortMethod, |
| JNI::CallStaticShortMethodV, |
| JNI::CallStaticShortMethodA, |
| JNI::CallStaticIntMethod, |
| JNI::CallStaticIntMethodV, |
| JNI::CallStaticIntMethodA, |
| JNI::CallStaticLongMethod, |
| JNI::CallStaticLongMethodV, |
| JNI::CallStaticLongMethodA, |
| JNI::CallStaticFloatMethod, |
| JNI::CallStaticFloatMethodV, |
| JNI::CallStaticFloatMethodA, |
| JNI::CallStaticDoubleMethod, |
| JNI::CallStaticDoubleMethodV, |
| JNI::CallStaticDoubleMethodA, |
| JNI::CallStaticVoidMethod, |
| JNI::CallStaticVoidMethodV, |
| JNI::CallStaticVoidMethodA, |
| JNI::GetStaticFieldID, |
| JNI::GetStaticObjectField, |
| JNI::GetStaticBooleanField, |
| JNI::GetStaticByteField, |
| JNI::GetStaticCharField, |
| JNI::GetStaticShortField, |
| JNI::GetStaticIntField, |
| JNI::GetStaticLongField, |
| JNI::GetStaticFloatField, |
| JNI::GetStaticDoubleField, |
| JNI::SetStaticObjectField, |
| JNI::SetStaticBooleanField, |
| JNI::SetStaticByteField, |
| JNI::SetStaticCharField, |
| JNI::SetStaticShortField, |
| JNI::SetStaticIntField, |
| JNI::SetStaticLongField, |
| JNI::SetStaticFloatField, |
| JNI::SetStaticDoubleField, |
| JNI::NewString, |
| JNI::GetStringLength, |
| JNI::GetStringChars, |
| JNI::ReleaseStringChars, |
| JNI::NewStringUTF, |
| JNI::GetStringUTFLength, |
| JNI::GetStringUTFChars, |
| JNI::ReleaseStringUTFChars, |
| JNI::GetArrayLength, |
| JNI::NewObjectArray, |
| JNI::GetObjectArrayElement, |
| JNI::SetObjectArrayElement, |
| JNI::NewBooleanArray, |
| JNI::NewByteArray, |
| JNI::NewCharArray, |
| JNI::NewShortArray, |
| JNI::NewIntArray, |
| JNI::NewLongArray, |
| JNI::NewFloatArray, |
| JNI::NewDoubleArray, |
| JNI::GetBooleanArrayElements, |
| JNI::GetByteArrayElements, |
| JNI::GetCharArrayElements, |
| JNI::GetShortArrayElements, |
| JNI::GetIntArrayElements, |
| JNI::GetLongArrayElements, |
| JNI::GetFloatArrayElements, |
| JNI::GetDoubleArrayElements, |
| JNI::ReleaseBooleanArrayElements, |
| JNI::ReleaseByteArrayElements, |
| JNI::ReleaseCharArrayElements, |
| JNI::ReleaseShortArrayElements, |
| JNI::ReleaseIntArrayElements, |
| JNI::ReleaseLongArrayElements, |
| JNI::ReleaseFloatArrayElements, |
| JNI::ReleaseDoubleArrayElements, |
| JNI::GetBooleanArrayRegion, |
| JNI::GetByteArrayRegion, |
| JNI::GetCharArrayRegion, |
| JNI::GetShortArrayRegion, |
| JNI::GetIntArrayRegion, |
| JNI::GetLongArrayRegion, |
| JNI::GetFloatArrayRegion, |
| JNI::GetDoubleArrayRegion, |
| JNI::SetBooleanArrayRegion, |
| JNI::SetByteArrayRegion, |
| JNI::SetCharArrayRegion, |
| JNI::SetShortArrayRegion, |
| JNI::SetIntArrayRegion, |
| JNI::SetLongArrayRegion, |
| JNI::SetFloatArrayRegion, |
| JNI::SetDoubleArrayRegion, |
| JNI::RegisterNatives, |
| JNI::UnregisterNatives, |
| JNI::MonitorEnter, |
| JNI::MonitorExit, |
| JNI::GetJavaVM, |
| JNI::GetStringRegion, |
| JNI::GetStringUTFRegion, |
| JNI::GetPrimitiveArrayCritical, |
| JNI::ReleasePrimitiveArrayCritical, |
| JNI::GetStringCritical, |
| JNI::ReleaseStringCritical, |
| JNI::NewWeakGlobalRef, |
| JNI::DeleteWeakGlobalRef, |
| JNI::ExceptionCheck, |
| JNI::NewDirectByteBuffer, |
| JNI::GetDirectBufferAddress, |
| JNI::GetDirectBufferCapacity, |
| JNI::GetObjectRefType, |
| }; |
| |
| JNIEnvExt::JNIEnvExt(Thread* self, JavaVMExt* vm) |
| : self(self), |
| vm(vm), |
| local_ref_cookie(IRT_FIRST_SEGMENT), |
| locals(kLocalsInitial, kLocalsMax, kLocal), |
| check_jni(false), |
| critical(0), |
| monitors("monitors", kMonitorsInitial, kMonitorsMax) { |
| functions = unchecked_functions = &gJniNativeInterface; |
| if (vm->check_jni) { |
| SetCheckJniEnabled(true); |
| } |
| } |
| |
| JNIEnvExt::~JNIEnvExt() { |
| } |
| |
| jobject JNIEnvExt::NewLocalRef(mirror::Object* obj) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| if (obj == nullptr) { |
| return nullptr; |
| } |
| return reinterpret_cast<jobject>(locals.Add(local_ref_cookie, obj)); |
| } |
| |
| void JNIEnvExt::DeleteLocalRef(jobject obj) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| if (obj != nullptr) { |
| locals.Remove(local_ref_cookie, reinterpret_cast<IndirectRef>(obj)); |
| } |
| } |
| void JNIEnvExt::SetCheckJniEnabled(bool enabled) { |
| check_jni = enabled; |
| functions = enabled ? GetCheckJniNativeInterface() : &gJniNativeInterface; |
| } |
| |
| void JNIEnvExt::DumpReferenceTables(std::ostream& os) { |
| locals.Dump(os); |
| monitors.Dump(os); |
| } |
| |
| void JNIEnvExt::PushFrame(int capacity) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| UNUSED(capacity); // cpplint gets confused with (int) and thinks its a cast. |
| // TODO: take 'capacity' into account. |
| stacked_local_ref_cookies.push_back(local_ref_cookie); |
| local_ref_cookie = locals.GetSegmentState(); |
| } |
| |
| void JNIEnvExt::PopFrame() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| locals.SetSegmentState(local_ref_cookie); |
| local_ref_cookie = stacked_local_ref_cookies.back(); |
| stacked_local_ref_cookies.pop_back(); |
| } |
| |
| Offset JNIEnvExt::SegmentStateOffset() { |
| return Offset(OFFSETOF_MEMBER(JNIEnvExt, locals) + |
| IndirectReferenceTable::SegmentStateOffset().Int32Value()); |
| } |
| |
| // JNI Invocation interface. |
| |
| extern "C" jint JNI_CreateJavaVM(JavaVM** p_vm, JNIEnv** p_env, void* vm_args) { |
| const JavaVMInitArgs* args = static_cast<JavaVMInitArgs*>(vm_args); |
| if (IsBadJniVersion(args->version)) { |
| LOG(ERROR) << "Bad JNI version passed to CreateJavaVM: " << args->version; |
| return JNI_EVERSION; |
| } |
| Runtime::Options options; |
| for (int i = 0; i < args->nOptions; ++i) { |
| JavaVMOption* option = &args->options[i]; |
| options.push_back(std::make_pair(std::string(option->optionString), option->extraInfo)); |
| } |
| bool ignore_unrecognized = args->ignoreUnrecognized; |
| if (!Runtime::Create(options, ignore_unrecognized)) { |
| return JNI_ERR; |
| } |
| Runtime* runtime = Runtime::Current(); |
| bool started = runtime->Start(); |
| if (!started) { |
| delete Thread::Current()->GetJniEnv(); |
| delete runtime->GetJavaVM(); |
| LOG(WARNING) << "CreateJavaVM failed"; |
| return JNI_ERR; |
| } |
| *p_env = Thread::Current()->GetJniEnv(); |
| *p_vm = runtime->GetJavaVM(); |
| return JNI_OK; |
| } |
| |
| extern "C" jint JNI_GetCreatedJavaVMs(JavaVM** vms, jsize, jsize* vm_count) { |
| Runtime* runtime = Runtime::Current(); |
| if (runtime == nullptr) { |
| *vm_count = 0; |
| } else { |
| *vm_count = 1; |
| vms[0] = runtime->GetJavaVM(); |
| } |
| return JNI_OK; |
| } |
| |
| // Historically unsupported. |
| extern "C" jint JNI_GetDefaultJavaVMInitArgs(void* /*vm_args*/) { |
| return JNI_ERR; |
| } |
| |
| class JII { |
| public: |
| static jint DestroyJavaVM(JavaVM* vm) { |
| if (vm == nullptr) { |
| return JNI_ERR; |
| } |
| JavaVMExt* raw_vm = reinterpret_cast<JavaVMExt*>(vm); |
| delete raw_vm->runtime; |
| return JNI_OK; |
| } |
| |
| static jint AttachCurrentThread(JavaVM* vm, JNIEnv** p_env, void* thr_args) { |
| return JII_AttachCurrentThread(vm, p_env, thr_args, false); |
| } |
| |
| static jint AttachCurrentThreadAsDaemon(JavaVM* vm, JNIEnv** p_env, void* thr_args) { |
| return JII_AttachCurrentThread(vm, p_env, thr_args, true); |
| } |
| |
| static jint DetachCurrentThread(JavaVM* vm) { |
| if (vm == nullptr || Thread::Current() == nullptr) { |
| return JNI_ERR; |
| } |
| JavaVMExt* raw_vm = reinterpret_cast<JavaVMExt*>(vm); |
| Runtime* runtime = raw_vm->runtime; |
| runtime->DetachCurrentThread(); |
| return JNI_OK; |
| } |
| |
| static jint GetEnv(JavaVM* vm, void** env, jint version) { |
| // GetEnv always returns a JNIEnv* for the most current supported JNI version, |
| // and unlike other calls that take a JNI version doesn't care if you supply |
| // JNI_VERSION_1_1, which we don't otherwise support. |
| if (IsBadJniVersion(version) && version != JNI_VERSION_1_1) { |
| LOG(ERROR) << "Bad JNI version passed to GetEnv: " << version; |
| return JNI_EVERSION; |
| } |
| if (vm == nullptr || env == nullptr) { |
| return JNI_ERR; |
| } |
| Thread* thread = Thread::Current(); |
| if (thread == nullptr) { |
| *env = nullptr; |
| return JNI_EDETACHED; |
| } |
| *env = thread->GetJniEnv(); |
| return JNI_OK; |
| } |
| }; |
| |
| const JNIInvokeInterface gJniInvokeInterface = { |
| nullptr, // reserved0 |
| nullptr, // reserved1 |
| nullptr, // reserved2 |
| JII::DestroyJavaVM, |
| JII::AttachCurrentThread, |
| JII::DetachCurrentThread, |
| JII::GetEnv, |
| JII::AttachCurrentThreadAsDaemon |
| }; |
| |
| JavaVMExt::JavaVMExt(Runtime* runtime, ParsedOptions* options) |
| : runtime(runtime), |
| check_jni_abort_hook(nullptr), |
| check_jni_abort_hook_data(nullptr), |
| check_jni(false), |
| force_copy(false), // TODO: add a way to enable this |
| trace(options->jni_trace_), |
| pins_lock("JNI pin table lock", kPinTableLock), |
| pin_table("pin table", kPinTableInitial, kPinTableMax), |
| globals_lock("JNI global reference table lock"), |
| globals(gGlobalsInitial, gGlobalsMax, kGlobal), |
| libraries_lock("JNI shared libraries map lock", kLoadLibraryLock), |
| libraries(new Libraries), |
| weak_globals_lock_("JNI weak global reference table lock"), |
| weak_globals_(kWeakGlobalsInitial, kWeakGlobalsMax, kWeakGlobal), |
| allow_new_weak_globals_(true), |
| weak_globals_add_condition_("weak globals add condition", weak_globals_lock_) { |
| functions = unchecked_functions = &gJniInvokeInterface; |
| if (options->check_jni_) { |
| SetCheckJniEnabled(true); |
| } |
| } |
| |
| JavaVMExt::~JavaVMExt() { |
| delete libraries; |
| } |
| |
| jweak JavaVMExt::AddWeakGlobalReference(Thread* self, mirror::Object* obj) { |
| if (obj == nullptr) { |
| return nullptr; |
| } |
| MutexLock mu(self, weak_globals_lock_); |
| while (UNLIKELY(!allow_new_weak_globals_)) { |
| weak_globals_add_condition_.WaitHoldingLocks(self); |
| } |
| IndirectRef ref = weak_globals_.Add(IRT_FIRST_SEGMENT, obj); |
| return reinterpret_cast<jweak>(ref); |
| } |
| |
| void JavaVMExt::DeleteWeakGlobalRef(Thread* self, jweak obj) { |
| MutexLock mu(self, weak_globals_lock_); |
| if (!weak_globals_.Remove(IRT_FIRST_SEGMENT, obj)) { |
| LOG(WARNING) << "JNI WARNING: DeleteWeakGlobalRef(" << obj << ") " |
| << "failed to find entry"; |
| } |
| } |
| |
| void JavaVMExt::SetCheckJniEnabled(bool enabled) { |
| check_jni = enabled; |
| functions = enabled ? GetCheckJniInvokeInterface() : &gJniInvokeInterface; |
| } |
| |
| void JavaVMExt::DumpForSigQuit(std::ostream& os) { |
| os << "JNI: CheckJNI is " << (check_jni ? "on" : "off"); |
| if (force_copy) { |
| os << " (with forcecopy)"; |
| } |
| Thread* self = Thread::Current(); |
| { |
| MutexLock mu(self, pins_lock); |
| os << "; pins=" << pin_table.Size(); |
| } |
| { |
| ReaderMutexLock mu(self, globals_lock); |
| os << "; globals=" << globals.Capacity(); |
| } |
| { |
| MutexLock mu(self, weak_globals_lock_); |
| if (weak_globals_.Capacity() > 0) { |
| os << " (plus " << weak_globals_.Capacity() << " weak)"; |
| } |
| } |
| os << '\n'; |
| |
| { |
| MutexLock mu(self, libraries_lock); |
| os << "Libraries: " << Dumpable<Libraries>(*libraries) << " (" << libraries->size() << ")\n"; |
| } |
| } |
| |
| void JavaVMExt::DisallowNewWeakGlobals() { |
| MutexLock mu(Thread::Current(), weak_globals_lock_); |
| allow_new_weak_globals_ = false; |
| } |
| |
| void JavaVMExt::AllowNewWeakGlobals() { |
| Thread* self = Thread::Current(); |
| MutexLock mu(self, weak_globals_lock_); |
| allow_new_weak_globals_ = true; |
| weak_globals_add_condition_.Broadcast(self); |
| } |
| |
| mirror::Object* JavaVMExt::DecodeWeakGlobal(Thread* self, IndirectRef ref) { |
| MutexLock mu(self, weak_globals_lock_); |
| while (UNLIKELY(!allow_new_weak_globals_)) { |
| weak_globals_add_condition_.WaitHoldingLocks(self); |
| } |
| // The weak globals do need a read barrier as they are weak roots. |
| mirror::Object* obj = weak_globals_.Get<kWithReadBarrier>(ref); |
| return obj; |
| } |
| |
| void JavaVMExt::DumpReferenceTables(std::ostream& os) { |
| Thread* self = Thread::Current(); |
| { |
| ReaderMutexLock mu(self, globals_lock); |
| globals.Dump(os); |
| } |
| { |
| MutexLock mu(self, weak_globals_lock_); |
| weak_globals_.Dump(os); |
| } |
| { |
| MutexLock mu(self, pins_lock); |
| pin_table.Dump(os); |
| } |
| } |
| |
| bool JavaVMExt::LoadNativeLibrary(const std::string& path, |
| Handle<mirror::ClassLoader> class_loader, |
| std::string* detail) { |
| detail->clear(); |
| |
| // See if we've already loaded this library. If we have, and the class loader |
| // matches, return successfully without doing anything. |
| // TODO: for better results we should canonicalize the pathname (or even compare |
| // inodes). This implementation is fine if everybody is using System.loadLibrary. |
| SharedLibrary* library; |
| Thread* self = Thread::Current(); |
| { |
| // TODO: move the locking (and more of this logic) into Libraries. |
| MutexLock mu(self, libraries_lock); |
| library = libraries->Get(path); |
| } |
| if (library != nullptr) { |
| if (library->GetClassLoader() != class_loader.Get()) { |
| // The library will be associated with class_loader. The JNI |
| // spec says we can't load the same library into more than one |
| // class loader. |
| StringAppendF(detail, "Shared library \"%s\" already opened by " |
| "ClassLoader %p; can't open in ClassLoader %p", |
| path.c_str(), library->GetClassLoader(), class_loader.Get()); |
| LOG(WARNING) << detail; |
| return false; |
| } |
| VLOG(jni) << "[Shared library \"" << path << "\" already loaded in " |
| << "ClassLoader " << class_loader.Get() << "]"; |
| if (!library->CheckOnLoadResult()) { |
| StringAppendF(detail, "JNI_OnLoad failed on a previous attempt " |
| "to load \"%s\"", path.c_str()); |
| return false; |
| } |
| return true; |
| } |
| |
| // Open the shared library. Because we're using a full path, the system |
| // doesn't have to search through LD_LIBRARY_PATH. (It may do so to |
| // resolve this library's dependencies though.) |
| |
| // Failures here are expected when java.library.path has several entries |
| // and we have to hunt for the lib. |
| |
| // Below we dlopen but there is no paired dlclose, this would be necessary if we supported |
| // class unloading. Libraries will only be unloaded when the reference count (incremented by |
| // dlopen) becomes zero from dlclose. |
| |
| // This can execute slowly for a large library on a busy system, so we |
| // want to switch from kRunnable while it executes. This allows the GC to ignore us. |
| self->TransitionFromRunnableToSuspended(kWaitingForJniOnLoad); |
| void* handle = dlopen(path.empty() ? nullptr : path.c_str(), RTLD_LAZY); |
| self->TransitionFromSuspendedToRunnable(); |
| |
| VLOG(jni) << "[Call to dlopen(\"" << path << "\", RTLD_LAZY) returned " << handle << "]"; |
| |
| if (handle == nullptr) { |
| *detail = dlerror(); |
| LOG(ERROR) << "dlopen(\"" << path << "\", RTLD_LAZY) failed: " << *detail; |
| return false; |
| } |
| |
| // Create a new entry. |
| // TODO: move the locking (and more of this logic) into Libraries. |
| bool created_library = false; |
| { |
| MutexLock mu(self, libraries_lock); |
| library = libraries->Get(path); |
| if (library == nullptr) { // We won race to get libraries_lock |
| library = new SharedLibrary(path, handle, class_loader.Get()); |
| libraries->Put(path, library); |
| created_library = true; |
| } |
| } |
| if (!created_library) { |
| LOG(INFO) << "WOW: we lost a race to add shared library: " |
| << "\"" << path << "\" ClassLoader=" << class_loader.Get(); |
| return library->CheckOnLoadResult(); |
| } |
| |
| VLOG(jni) << "[Added shared library \"" << path << "\" for ClassLoader " << class_loader.Get() |
| << "]"; |
| |
| bool was_successful = false; |
| void* sym = dlsym(handle, "JNI_OnLoad"); |
| if (sym == nullptr) { |
| VLOG(jni) << "[No JNI_OnLoad found in \"" << path << "\"]"; |
| was_successful = true; |
| } else { |
| // Call JNI_OnLoad. We have to override the current class |
| // loader, which will always be "null" since the stuff at the |
| // top of the stack is around Runtime.loadLibrary(). (See |
| // the comments in the JNI FindClass function.) |
| typedef int (*JNI_OnLoadFn)(JavaVM*, void*); |
| JNI_OnLoadFn jni_on_load = reinterpret_cast<JNI_OnLoadFn>(sym); |
| StackHandleScope<1> hs(self); |
| Handle<mirror::ClassLoader> old_class_loader(hs.NewHandle(self->GetClassLoaderOverride())); |
| self->SetClassLoaderOverride(class_loader.Get()); |
| |
| int version = 0; |
| { |
| ScopedThreadStateChange tsc(self, kNative); |
| VLOG(jni) << "[Calling JNI_OnLoad in \"" << path << "\"]"; |
| version = (*jni_on_load)(this, nullptr); |
| } |
| |
| self->SetClassLoaderOverride(old_class_loader.Get()); |
| |
| if (version == JNI_ERR) { |
| StringAppendF(detail, "JNI_ERR returned from JNI_OnLoad in \"%s\"", path.c_str()); |
| } else if (IsBadJniVersion(version)) { |
| StringAppendF(detail, "Bad JNI version returned from JNI_OnLoad in \"%s\": %d", |
| path.c_str(), version); |
| // It's unwise to call dlclose() here, but we can mark it |
| // as bad and ensure that future load attempts will fail. |
| // We don't know how far JNI_OnLoad got, so there could |
| // be some partially-initialized stuff accessible through |
| // newly-registered native method calls. We could try to |
| // unregister them, but that doesn't seem worthwhile. |
| } else { |
| was_successful = true; |
| } |
| VLOG(jni) << "[Returned " << (was_successful ? "successfully" : "failure") |
| << " from JNI_OnLoad in \"" << path << "\"]"; |
| } |
| |
| library->SetResult(was_successful); |
| return was_successful; |
| } |
| |
| void* JavaVMExt::FindCodeForNativeMethod(mirror::ArtMethod* m) { |
| CHECK(m->IsNative()); |
| mirror::Class* c = m->GetDeclaringClass(); |
| // If this is a static method, it could be called before the class |
| // has been initialized. |
| if (m->IsStatic()) { |
| c = EnsureInitialized(Thread::Current(), c); |
| if (c == nullptr) { |
| return nullptr; |
| } |
| } else { |
| CHECK(c->IsInitializing()) << c->GetStatus() << " " << PrettyMethod(m); |
| } |
| std::string detail; |
| void* native_method; |
| Thread* self = Thread::Current(); |
| { |
| MutexLock mu(self, libraries_lock); |
| native_method = libraries->FindNativeMethod(m, detail); |
| } |
| // Throwing can cause libraries_lock to be reacquired. |
| if (native_method == nullptr) { |
| ThrowLocation throw_location = self->GetCurrentLocationForThrow(); |
| self->ThrowNewException(throw_location, "Ljava/lang/UnsatisfiedLinkError;", detail.c_str()); |
| } |
| return native_method; |
| } |
| |
| void JavaVMExt::SweepJniWeakGlobals(IsMarkedCallback* callback, void* arg) { |
| MutexLock mu(Thread::Current(), weak_globals_lock_); |
| for (mirror::Object** entry : weak_globals_) { |
| // Since this is called by the GC, we don't need a read barrier. |
| mirror::Object* obj = *entry; |
| mirror::Object* new_obj = callback(obj, arg); |
| if (new_obj == nullptr) { |
| new_obj = kClearedJniWeakGlobal; |
| } |
| *entry = new_obj; |
| } |
| } |
| |
| void JavaVMExt::VisitRoots(RootCallback* callback, void* arg) { |
| Thread* self = Thread::Current(); |
| { |
| ReaderMutexLock mu(self, globals_lock); |
| globals.VisitRoots(callback, arg, 0, kRootJNIGlobal); |
| } |
| { |
| MutexLock mu(self, pins_lock); |
| pin_table.VisitRoots(callback, arg, 0, kRootVMInternal); |
| } |
| { |
| MutexLock mu(self, libraries_lock); |
| // Libraries contains shared libraries which hold a pointer to a class loader. |
| libraries->VisitRoots(callback, arg); |
| } |
| // The weak_globals table is visited by the GC itself (because it mutates the table). |
| } |
| |
| void RegisterNativeMethods(JNIEnv* env, const char* jni_class_name, const JNINativeMethod* methods, |
| jint method_count) { |
| ScopedLocalRef<jclass> c(env, env->FindClass(jni_class_name)); |
| if (c.get() == nullptr) { |
| LOG(FATAL) << "Couldn't find class: " << jni_class_name; |
| } |
| JNI::RegisterNativeMethods(env, c.get(), methods, method_count, false); |
| } |
| |
| } // namespace art |
| |
| std::ostream& operator<<(std::ostream& os, const jobjectRefType& rhs) { |
| switch (rhs) { |
| case JNIInvalidRefType: |
| os << "JNIInvalidRefType"; |
| return os; |
| case JNILocalRefType: |
| os << "JNILocalRefType"; |
| return os; |
| case JNIGlobalRefType: |
| os << "JNIGlobalRefType"; |
| return os; |
| case JNIWeakGlobalRefType: |
| os << "JNIWeakGlobalRefType"; |
| return os; |
| default: |
| LOG(FATAL) << "jobjectRefType[" << static_cast<int>(rhs) << "]"; |
| return os; |
| } |
| } |