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 HDI_FD_H
17 #define HDI_FD_H
18 #include <fcntl.h>
19 #include <memory>
20 #include "display_common.h"
21 
22 namespace OHOS {
23 namespace HDI {
24 namespace DISPLAY {
25 class HdiFd {
26 public:
HdiFd()27     HdiFd()
28     {
29         DISPLAY_LOGD();
30     }
HdiFd(int fd)31     explicit HdiFd(int fd) : mFd(fd)
32     {
33         DISPLAY_LOGD("mFd %{public}d", mFd);
34     }
GetFd()35     int GetFd() const
36     {
37         return mFd;
38     };
39 
40     HdiFd &operator = (int fd)
41     {
42         if (mFd >= 0) {
43             close(mFd);
44         }
45         mFd = fd;
46         return *this;
47     }
48 
~HdiFd()49     virtual ~HdiFd()
50     {
51         if (mFd >= 0) {
52             close(mFd);
53         }
54     }
55 
56 private:
57     int mFd = -1;
58 };
59 
60 using FdPtr = std::shared_ptr<HdiFd>;
61 } // OHOS
62 } // HDIO
63 } // DISPLAY
64 
65 #endif // HDI_FD_H