1 /* 2 * Copyright (C) 2008 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #include "java_lang_reflect_Array.h" 18 19 #include "class_linker-inl.h" 20 #include "common_throws.h" 21 #include "dex_file-inl.h" 22 #include "jni_internal.h" 23 #include "mirror/class-inl.h" 24 #include "mirror/object-inl.h" 25 #include "scoped_fast_native_object_access.h" 26 #include "handle_scope-inl.h" 27 28 namespace art { 29 30 static jobject Array_createMultiArray( 31 JNIEnv* env, jclass, jclass javaElementClass, jobject javaDimArray) { 32 ScopedFastNativeObjectAccess soa(env); 33 DCHECK(javaElementClass != nullptr); 34 StackHandleScope<2> hs(soa.Self()); 35 Handle<mirror::Class> element_class(hs.NewHandle(soa.Decode<mirror::Class*>(javaElementClass))); 36 DCHECK(element_class->IsClass()); 37 DCHECK(javaDimArray != nullptr); 38 mirror::Object* dimensions_obj = soa.Decode<mirror::Object*>(javaDimArray); 39 DCHECK(dimensions_obj->IsArrayInstance()); 40 DCHECK_EQ(dimensions_obj->GetClass()->GetComponentType()->GetPrimitiveType(), 41 Primitive::kPrimInt); 42 Handle<mirror::IntArray> dimensions_array( 43 hs.NewHandle(down_cast<mirror::IntArray*>(dimensions_obj))); 44 mirror::Array* new_array = mirror::Array::CreateMultiArray(soa.Self(), element_class, 45 dimensions_array); 46 return soa.AddLocalReference<jobject>(new_array); 47 } 48 49 static jobject Array_createObjectArray(JNIEnv* env, jclass, jclass javaElementClass, jint length) { 50 ScopedFastNativeObjectAccess soa(env); 51 DCHECK(javaElementClass != nullptr); 52 if (UNLIKELY(length < 0)) { 53 ThrowNegativeArraySizeException(length); 54 return nullptr; 55 } 56 mirror::Class* element_class = soa.Decode<mirror::Class*>(javaElementClass); 57 Runtime* runtime = Runtime::Current(); 58 ClassLinker* class_linker = runtime->GetClassLinker(); 59 mirror::Class* array_class = class_linker->FindArrayClass(soa.Self(), &element_class); 60 if (UNLIKELY(array_class == nullptr)) { 61 CHECK(soa.Self()->IsExceptionPending()); 62 return nullptr; 63 } 64 DCHECK(array_class->IsObjectArrayClass()); 65 mirror::Array* new_array = mirror::ObjectArray<mirror::Object*>::Alloc( 66 soa.Self(), array_class, length, runtime->GetHeap()->GetCurrentAllocator()); 67 return soa.AddLocalReference<jobject>(new_array); 68 } 69 70 static JNINativeMethod gMethods[] = { 71 NATIVE_METHOD(Array, createMultiArray, "!(Ljava/lang/Class;[I)Ljava/lang/Object;"), 72 NATIVE_METHOD(Array, createObjectArray, "!(Ljava/lang/Class;I)Ljava/lang/Object;"), 73 }; 74 75 void register_java_lang_reflect_Array(JNIEnv* env) { 76 REGISTER_NATIVE_METHODS("java/lang/reflect/Array"); 77 } 78 79 } // namespace art 80
