• Home
  • Line#
  • Scopes#
  • Navigate#
  • Raw
  • Download
1 /*
2  * Copyright (c) 2021 Huawei Device Co., Ltd.
3  * Licensed under the Apache License, Version 2.0 (the "License");
4  * you may not use this file except in compliance with the License.
5  * You may obtain a copy of the License at
6  *
7  *     http://www.apache.org/licenses/LICENSE-2.0
8  *
9  * Unless required by applicable law or agreed to in writing, software
10  * distributed under the License is distributed on an "AS IS" BASIS,
11  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12  * See the License for the specific language governing permissions and
13  * limitations under the License.
14  */
15 
16 #ifndef ECMASCRIPT_MEM_AREA_H
17 #define ECMASCRIPT_MEM_AREA_H
18 
19 namespace panda::ecmascript {
20 class Area {
21 public:
Area(uintptr_t begin,size_t capacity)22     Area(uintptr_t begin, size_t capacity)
23         // NOLINTNEXTLINE(cppcoreguidelines-pro-bounds-pointer-arithmetic)
24         : begin_(begin), end_(begin + capacity), next_(nullptr), prev_(nullptr)
25     {
26     }
27     ~Area() = default;
28     NO_COPY_SEMANTIC(Area);
29     NO_MOVE_SEMANTIC(Area);
30 
GetBegin()31     uintptr_t GetBegin() const
32     {
33         return begin_;
34     }
35 
GetEnd()36     uintptr_t GetEnd() const
37     {
38         return end_;
39     }
40 
LinkPrev(Area * prev)41     void LinkPrev(Area *prev)
42     {
43         prev_ = prev;
44     }
45 
LinkNext(Area * next)46     void LinkNext(Area *next)
47     {
48         next_ = next;
49     }
50 
GetSize()51     size_t GetSize()
52     {
53         return end_ - begin_;
54     }
55 
56 private:
57     template<class T>
58     friend class EcmaList;
59     friend class Worker;
GetPrev()60     Area *GetPrev() const
61     {
62         return prev_;
63     }
64 
GetNext()65     Area *GetNext() const
66     {
67         return next_;
68     }
69     uintptr_t begin_;
70     uintptr_t end_;
71     Area *next_;
72     Area *prev_;
73 };
74 }  // namespace panda::ecmascript
75 
76 #endif  // ECMASCRIPT_MEM_AREA_H
77