mirror of
https://gitee.com/openharmony/arkcompiler_ets_runtime
synced 2024-10-08 00:24:00 +00:00
7ffcc4b20f
Signed-off-by: zhangyukun <zhangyukun8@huawei.com>
76 lines
2.3 KiB
C++
76 lines
2.3 KiB
C++
/*
|
|
* Copyright (c) 2021 Huawei Device Co., Ltd.
|
|
* 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 ECMASCRIPT_FREE_OBJECT_H
|
|
#define ECMASCRIPT_FREE_OBJECT_H
|
|
|
|
#include "ecmascript/js_hclass.h"
|
|
#include "ecmascript/mem/barriers.h"
|
|
#include "ecmascript/mem/tagged_object-inl.h"
|
|
|
|
namespace panda::ecmascript {
|
|
class FreeObject : public TaggedObject {
|
|
public:
|
|
static FreeObject *Cast(uintptr_t object)
|
|
{
|
|
return reinterpret_cast<FreeObject *>(object);
|
|
}
|
|
static FreeObject *FillFreeObject(EcmaVM *vm, uintptr_t address, size_t size);
|
|
|
|
inline bool IsEmpty() const
|
|
{
|
|
return Available() == 0;
|
|
}
|
|
|
|
inline uintptr_t GetBegin() const
|
|
{
|
|
return reinterpret_cast<uintptr_t>(this);
|
|
}
|
|
|
|
inline uintptr_t GetEnd() const
|
|
{
|
|
return reinterpret_cast<uintptr_t>(this) + Available();
|
|
}
|
|
|
|
inline void SetAvailable(size_t size)
|
|
{
|
|
if (size >= SIZE) {
|
|
SetSize(size);
|
|
}
|
|
}
|
|
|
|
inline size_t Available() const
|
|
{
|
|
auto hclass = GetClass();
|
|
if (hclass != nullptr && (hclass->IsFreeObjectWithOneField() || hclass->IsFreeObjectWithNoneField())) {
|
|
return hclass->GetObjectSize();
|
|
}
|
|
return GetSize();
|
|
}
|
|
|
|
inline bool IsFreeObject() const
|
|
{
|
|
auto hclass = GetClass();
|
|
return (hclass == nullptr) || (hclass->IsFreeObjectWithOneField() || hclass->IsFreeObjectWithTwoField() ||
|
|
hclass->IsFreeObjectWithNoneField());
|
|
}
|
|
|
|
static constexpr size_t NEXT_OFFSET = TaggedObjectSize();
|
|
SET_GET_NATIVE_FIELD(Next, FreeObject, NEXT_OFFSET, SIZE_OFFSET);
|
|
SET_GET_PRIMITIVE_FIELD(Size, size_t, SIZE_OFFSET, SIZE);
|
|
};
|
|
} // namespace panda::ecmascript
|
|
#endif // ECMASCRIPT_MEM_FREE_OBJECT_H
|