71 lines
1.5 KiB
C++
71 lines
1.5 KiB
C++
/**
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* \file misc/fd.hh
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* \brief FileDescriptor declaration.
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*/
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#pragma once
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#include <fcntl.h>
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#include <memory>
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#include <unistd.h>
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#include <utility>
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#include "misc/sys-wrapper.hh"
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namespace misc
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{
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/**
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* \class FileDescriptor
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* \brief A resource object representing a fd.
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*/
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struct FileDescriptor
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{
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/**
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* \brief Construct a FileDescriptor from a given fd.
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* \param fd int
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*/
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explicit FileDescriptor(int fd)
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: fd_{fd}
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{}
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FileDescriptor() = default;
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FileDescriptor(const FileDescriptor&) = delete;
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FileDescriptor& operator=(const FileDescriptor&) = delete;
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FileDescriptor(FileDescriptor&& fileDescriptor)
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: fd_{std::exchange(fileDescriptor.fd_, -1)}
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{}
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FileDescriptor& operator=(FileDescriptor&& fileDescriptor);
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~FileDescriptor();
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/**
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* \brief Implicit conversion to int.
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*/
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operator int() const&;
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/**
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* \brief Implicit conversion to bool.
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*
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* \return Whether or not the FileDescriptor holds a valid fd.
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*/
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operator bool() const&;
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/**
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* \brief man 2 fcntl
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*/
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void fcntl_set(int flags);
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/**
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* \brief The fd held by the FileDescriptor object.
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*/
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int fd_ = -1;
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};
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/**
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* \brief Alias to the smart pointer used to manage FileDescriptors
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* memory allocation.
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*/
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using shared_fd = std::shared_ptr<FileDescriptor>;
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} // namespace misc
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