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/*
* 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
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