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 "class_linker-inl.h"
18 #include "common_throws.h"
19 #include "dex_file-inl.h"
20 #include "jni_internal.h"
21 #include "mirror/class-inl.h"
22 #include "mirror/object-inl.h"
23 #include "scoped_fast_native_object_access.h"
24 #include "handle_scope-inl.h"
25
26 namespace art {
27
Array_createMultiArray(JNIEnv * env,jclass,jclass javaElementClass,jobject javaDimArray)28 static jobject Array_createMultiArray(JNIEnv* env, jclass, jclass javaElementClass, jobject javaDimArray) {
29 ScopedFastNativeObjectAccess soa(env);
30 DCHECK(javaElementClass != NULL);
31 StackHandleScope<2> hs(soa.Self());
32 Handle<mirror::Class> element_class(hs.NewHandle(soa.Decode<mirror::Class*>(javaElementClass)));
33 DCHECK(element_class->IsClass());
34 DCHECK(javaDimArray != NULL);
35 mirror::Object* dimensions_obj = soa.Decode<mirror::Object*>(javaDimArray);
36 DCHECK(dimensions_obj->IsArrayInstance());
37 DCHECK_EQ(dimensions_obj->GetClass()->GetComponentType()->GetPrimitiveType(),
38 Primitive::kPrimInt);
39 Handle<mirror::IntArray> dimensions_array(
40 hs.NewHandle(down_cast<mirror::IntArray*>(dimensions_obj)));
41 mirror::Array* new_array = mirror::Array::CreateMultiArray(soa.Self(), element_class,
42 dimensions_array);
43 return soa.AddLocalReference<jobject>(new_array);
44 }
45
Array_createObjectArray(JNIEnv * env,jclass,jclass javaElementClass,jint length)46 static jobject Array_createObjectArray(JNIEnv* env, jclass, jclass javaElementClass, jint length) {
47 ScopedFastNativeObjectAccess soa(env);
48 DCHECK(javaElementClass != NULL);
49 if (UNLIKELY(length < 0)) {
50 ThrowNegativeArraySizeException(length);
51 return NULL;
52 }
53 mirror::Class* element_class = soa.Decode<mirror::Class*>(javaElementClass);
54 Runtime* runtime = Runtime::Current();
55 ClassLinker* class_linker = runtime->GetClassLinker();
56 mirror::Class* array_class = class_linker->FindArrayClass(soa.Self(), &element_class);
57 if (UNLIKELY(array_class == NULL)) {
58 CHECK(soa.Self()->IsExceptionPending());
59 return NULL;
60 }
61 DCHECK(array_class->IsObjectArrayClass());
62 mirror::Array* new_array = mirror::Array::Alloc<true>(soa.Self(), array_class, length,
63 sizeof(mirror::HeapReference<mirror::Object>),
64 runtime->GetHeap()->GetCurrentAllocator());
65 return soa.AddLocalReference<jobject>(new_array);
66 }
67
68 static JNINativeMethod gMethods[] = {
69 NATIVE_METHOD(Array, createMultiArray, "!(Ljava/lang/Class;[I)Ljava/lang/Object;"),
70 NATIVE_METHOD(Array, createObjectArray, "!(Ljava/lang/Class;I)Ljava/lang/Object;"),
71 };
72
register_java_lang_reflect_Array(JNIEnv * env)73 void register_java_lang_reflect_Array(JNIEnv* env) {
74 REGISTER_NATIVE_METHODS("java/lang/reflect/Array");
75 }
76
77 } // namespace art
78