| /* |
| * Copyright (C) 2008 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 "java_lang_System.h" |
| |
| #include "common_throws.h" |
| #include "gc/accounting/card_table-inl.h" |
| #include "jni_internal.h" |
| #include "mirror/array.h" |
| #include "mirror/class.h" |
| #include "mirror/class-inl.h" |
| #include "mirror/object-inl.h" |
| #include "mirror/object_array-inl.h" |
| #include "scoped_fast_native_object_access.h" |
| |
| namespace art { |
| |
| // Template to convert general array to that of its specific primitive type. |
| template <typename T> |
| inline T* AsPrimitiveArray(mirror::Array* array) { |
| return down_cast<T*>(array); |
| } |
| |
| template <typename T, Primitive::Type kPrimType> |
| inline void System_arraycopyTUnchecked(JNIEnv* env, jobject javaSrc, jint srcPos, |
| jobject javaDst, jint dstPos, jint count) { |
| ScopedFastNativeObjectAccess soa(env); |
| mirror::Object* srcObject = soa.Decode<mirror::Object*>(javaSrc); |
| mirror::Object* dstObject = soa.Decode<mirror::Object*>(javaDst); |
| DCHECK(dstObject != nullptr); |
| mirror::Array* srcArray = srcObject->AsArray(); |
| mirror::Array* dstArray = dstObject->AsArray(); |
| DCHECK_GE(count, 0); |
| DCHECK_EQ(srcArray->GetClass(), dstArray->GetClass()); |
| DCHECK_EQ(srcArray->GetClass()->GetComponentType()->GetPrimitiveType(), kPrimType); |
| AsPrimitiveArray<T>(dstArray)->Memmove(dstPos, AsPrimitiveArray<T>(srcArray), srcPos, count); |
| } |
| |
| static void System_arraycopyCharUnchecked(JNIEnv* env, jclass, jobject javaSrc, jint srcPos, |
| jobject javaDst, jint dstPos, jint count) { |
| System_arraycopyTUnchecked<mirror::CharArray, Primitive::kPrimChar>(env, javaSrc, srcPos, |
| javaDst, dstPos, count); |
| } |
| |
| static void System_arraycopyByteUnchecked(JNIEnv* env, jclass, jobject javaSrc, jint srcPos, |
| jobject javaDst, jint dstPos, jint count) { |
| System_arraycopyTUnchecked<mirror::ByteArray, Primitive::kPrimByte>(env, javaSrc, srcPos, |
| javaDst, dstPos, count); |
| } |
| |
| static void System_arraycopyShortUnchecked(JNIEnv* env, jclass, jobject javaSrc, jint srcPos, |
| jobject javaDst, jint dstPos, jint count) { |
| System_arraycopyTUnchecked<mirror::ShortArray, Primitive::kPrimShort>(env, javaSrc, srcPos, |
| javaDst, dstPos, count); |
| } |
| |
| static void System_arraycopyIntUnchecked(JNIEnv* env, jclass, jobject javaSrc, jint srcPos, |
| jobject javaDst, jint dstPos, jint count) { |
| System_arraycopyTUnchecked<mirror::IntArray, Primitive::kPrimInt>(env, javaSrc, srcPos, |
| javaDst, dstPos, count); |
| } |
| |
| static void System_arraycopyLongUnchecked(JNIEnv* env, jclass, jobject javaSrc, jint srcPos, |
| jobject javaDst, jint dstPos, jint count) { |
| System_arraycopyTUnchecked<mirror::LongArray, Primitive::kPrimLong>(env, javaSrc, srcPos, |
| javaDst, dstPos, count); |
| } |
| |
| static void System_arraycopyFloatUnchecked(JNIEnv* env, jclass, jobject javaSrc, jint srcPos, |
| jobject javaDst, jint dstPos, jint count) { |
| System_arraycopyTUnchecked<mirror::FloatArray, Primitive::kPrimFloat>(env, javaSrc, srcPos, |
| javaDst, dstPos, count); |
| } |
| |
| static void System_arraycopyDoubleUnchecked(JNIEnv* env, jclass, jobject javaSrc, jint srcPos, |
| jobject javaDst, jint dstPos, jint count) { |
| System_arraycopyTUnchecked<mirror::DoubleArray, Primitive::kPrimDouble>(env, javaSrc, srcPos, |
| javaDst, dstPos, count); |
| } |
| |
| static void System_arraycopyBooleanUnchecked(JNIEnv* env, jclass, jobject javaSrc, jint srcPos, |
| jobject javaDst, jint dstPos, jint count) { |
| System_arraycopyTUnchecked<mirror::BooleanArray, Primitive::kPrimBoolean>(env, javaSrc, srcPos, |
| javaDst, dstPos, count); |
| } |
| |
| static JNINativeMethod gMethods[] = { |
| NATIVE_METHOD(System, arraycopyCharUnchecked, "!([CI[CII)V"), |
| NATIVE_METHOD(System, arraycopyByteUnchecked, "!([BI[BII)V"), |
| NATIVE_METHOD(System, arraycopyShortUnchecked, "!([SI[SII)V"), |
| NATIVE_METHOD(System, arraycopyIntUnchecked, "!([II[III)V"), |
| NATIVE_METHOD(System, arraycopyLongUnchecked, "!([JI[JII)V"), |
| NATIVE_METHOD(System, arraycopyFloatUnchecked, "!([FI[FII)V"), |
| NATIVE_METHOD(System, arraycopyDoubleUnchecked, "!([DI[DII)V"), |
| NATIVE_METHOD(System, arraycopyBooleanUnchecked, "!([ZI[ZII)V"), |
| }; |
| |
| void register_java_lang_System(JNIEnv* env) { |
| REGISTER_NATIVE_METHODS("java/lang/System"); |
| } |
| |
| } // namespace art |