net::impl::file Namespace Reference

Classes
class	file_control_option
class	file_control_option< Name, void >

Typedefs
using	file_handle_type = int
using	dup_fd = file_control_option< F_DUPFD, int >
using	dup_fd_cloexec = file_control_option< F_DUPFD_CLOEXEC, int >
using	get_file_flags = file_control_option< F_GETFD, void >
using	set_file_flags = file_control_option< F_SETFD, int >
using	get_file_status = file_control_option< F_GETFL, void >
using	set_file_status = file_control_option< F_SETFL, int >
using	get_own = file_control_option< F_GETOWN, void >
using	set_own = file_control_option< F_SETOWN, int >

Functions
std::error_code	last_error_code ()
template<class FileControlOption >
stdx::expected< int, std::error_code >	fcntl (file_handle_type fd, const FileControlOption &cmd)
stdx::expected< std::pair< file_handle_type, file_handle_type >, std::error_code >	pipe (int flags=0)
	create pipe. More...
stdx::expected< size_t, std::error_code >	write (file_handle_type handle, const void *buf, size_t buf_len)
	write a buffer to a file handle. More...
stdx::expected< size_t, std::error_code >	read (file_handle_type handle, void *buf, size_t buf_len)
	read from file handle into a buffer. More...
stdx::expected< void, std::error_code >	close (file_handle_type native_handle)
	close file handle. More...

Variables
constexpr file_handle_type	kInvalidHandle {-1}

Typedef Documentation

dup_fd

using net::impl::file::dup_fd = typedef file_control_option<F_DUPFD, int>

dup_fd_cloexec

using net::impl::file::dup_fd_cloexec = typedef file_control_option<F_DUPFD_CLOEXEC, int>

file_handle_type

using net::impl::file::file_handle_type = typedef int

get_file_flags

using net::impl::file::get_file_flags = typedef file_control_option<F_GETFD, void>

get_file_status

using net::impl::file::get_file_status = typedef file_control_option<F_GETFL, void>

get_own

using net::impl::file::get_own = typedef file_control_option<F_GETOWN, void>

set_file_flags

using net::impl::file::set_file_flags = typedef file_control_option<F_SETFD, int>

set_file_status

using net::impl::file::set_file_status = typedef file_control_option<F_SETFL, int>

set_own

using net::impl::file::set_own = typedef file_control_option<F_SETOWN, int>

Function Documentation

close()

stdx::expected< void, std::error_code > net::impl::file::close ( file_handle_type  native_handle )

inline

close file handle.

calls close() on POSIX, CloseHandle() on win32

fcntl()

template<class FileControlOption >

stdx::expected< int, std::error_code > net::impl::file::fcntl ( file_handle_type  fd, const FileControlOption &  cmd  )

inline

last_error_code()

std::error_code net::impl::file::last_error_code ( )

inline

pipe()

stdx::expected< std::pair< file_handle_type, file_handle_type >, std::error_code > net::impl::file::pipe ( int  flags = 0 )

inline

create pipe.

Parameters

flags

flags passed to pipe2() like O_NONBLOCK or O_CLOEXEC

Returns

pair file-handles or std::error_code

read()

stdx::expected< size_t, std::error_code > net::impl::file::read ( file_handle_type  handle, void *  buf, size_t  buf_len  )

inline

read from file handle into a buffer.

calls read() on POSIX, ReadFile() on win32

write()

stdx::expected< size_t, std::error_code > net::impl::file::write ( file_handle_type  handle, const void *  buf, size_t  buf_len  )

inline

write a buffer to a file handle.

calls write() on POSIX, WriteFile() on win32

Variable Documentation

kInvalidHandle

constexpr file_handle_type net::impl::file::kInvalidHandle {-1}

constexpr