| #pragma once |
| |
| #include <unistd.h> |
| namespace phosphor |
| { |
| namespace gpio |
| { |
| /** @class FileDescriptor |
| * @brief Responsible for handling file descriptor |
| */ |
| class FileDescriptor |
| { |
| private: |
| /** @brief File descriptor for the gpio input device */ |
| int fd = -1; |
| |
| public: |
| FileDescriptor() = default; |
| FileDescriptor(const FileDescriptor&) = delete; |
| FileDescriptor& operator=(const FileDescriptor&) = delete; |
| FileDescriptor(FileDescriptor&&) = delete; |
| FileDescriptor& operator=(FileDescriptor&&) = delete; |
| |
| /** @brief Saves File descriptor and uses it to do file operation |
| * |
| * @param[in] fd - File descriptor |
| */ |
| FileDescriptor(int fd) : fd(fd) |
| { |
| // Nothing |
| } |
| |
| ~FileDescriptor() |
| { |
| if (fd >=0) |
| { |
| close(fd); |
| } |
| } |
| |
| int operator()() |
| { |
| return fd; |
| } |
| |
| operator bool() const |
| { |
| return fd != -1; |
| } |
| |
| void set(int descriptor) |
| { |
| fd = descriptor; |
| } |
| }; |
| |
| } // namespace gpio |
| } // namespace phosphor |