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/*
* 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.
*/
#ifndef ART_RUNTIME_MIRROR_ARRAY_H_
#define ART_RUNTIME_MIRROR_ARRAY_H_
#include "object.h"
namespace art {
namespace mirror {
class MANAGED Array : public Object {
public:
// A convenience for code that doesn't know the component size,
// and doesn't want to have to work it out itself.
static Array* Alloc(Thread* self, Class* array_class, int32_t component_count)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
static Array* Alloc(Thread* self, Class* array_class, int32_t component_count,
size_t component_size)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
static Array* CreateMultiArray(Thread* self, Class* element_class, IntArray* dimensions)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
size_t SizeOf() const;
int32_t GetLength() const {
return GetField32(OFFSET_OF_OBJECT_MEMBER(Array, length_), false);
}
void SetLength(int32_t length) {
CHECK_GE(length, 0);
SetField32(OFFSET_OF_OBJECT_MEMBER(Array, length_), length, false);
}
static MemberOffset LengthOffset() {
return OFFSET_OF_OBJECT_MEMBER(Array, length_);
}
static MemberOffset DataOffset(size_t component_size) {
if (component_size != sizeof(int64_t)) {
return OFFSET_OF_OBJECT_MEMBER(Array, first_element_);
} else {
// Align longs and doubles.
return MemberOffset(OFFSETOF_MEMBER(Array, first_element_) + 4);
}
}
void* GetRawData(size_t component_size) {
intptr_t data = reinterpret_cast<intptr_t>(this) + DataOffset(component_size).Int32Value();
return reinterpret_cast<void*>(data);
}
const void* GetRawData(size_t component_size) const {
intptr_t data = reinterpret_cast<intptr_t>(this) + DataOffset(component_size).Int32Value();
return reinterpret_cast<const void*>(data);
}
bool IsValidIndex(int32_t index) const
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
if (UNLIKELY(static_cast<uint32_t>(index) >= static_cast<uint32_t>(GetLength()))) {
ThrowArrayIndexOutOfBoundsException(index);
return false;
}
return true;
}
protected:
void ThrowArrayIndexOutOfBoundsException(int32_t index) const
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
void ThrowArrayStoreException(Object* object) const
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
private:
// The number of array elements.
int32_t length_;
// Marker for the data (used by generated code)
uint32_t first_element_[0];
DISALLOW_IMPLICIT_CONSTRUCTORS(Array);
};
template<class T>
class MANAGED PrimitiveArray : public Array {
public:
typedef T ElementType;
static PrimitiveArray<T>* Alloc(Thread* self, size_t length)
SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
const T* GetData() const {
intptr_t data = reinterpret_cast<intptr_t>(this) + DataOffset(sizeof(T)).Int32Value();
return reinterpret_cast<T*>(data);
}
T* GetData() {
intptr_t data = reinterpret_cast<intptr_t>(this) + DataOffset(sizeof(T)).Int32Value();
return reinterpret_cast<T*>(data);
}
T Get(int32_t i) const SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
if (!IsValidIndex(i)) {
return T(0);
}
return GetData()[i];
}
void Set(int32_t i, T value) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
if (IsValidIndex(i)) {
GetData()[i] = value;
}
}
static void SetArrayClass(Class* array_class) {
CHECK(array_class_ == NULL);
CHECK(array_class != NULL);
array_class_ = array_class;
}
static void ResetArrayClass() {
CHECK(array_class_ != NULL);
array_class_ = NULL;
}
private:
static Class* array_class_;
DISALLOW_IMPLICIT_CONSTRUCTORS(PrimitiveArray);
};
} // namespace mirror
} // namespace art
#endif // ART_RUNTIME_MIRROR_ARRAY_H_
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