IO

Types

using fdstream = basic_fdstream< char >
Character based input/output file descriptor stream.
using ofdstream = basic_ofdstream< char >
Character based output file descriptor stream.
using ifdstream = basic_ifdstream< char >
Character based input file descriptor stream.

Enumerations

enum open_flag: int
Flags used when opening file.
Date
2018-05-23
enum seek_origin: int
Origin of file seek operations.
enum event: decltype(poll_event_base::events)
Input/output events.

Classes

class sys::epoll_event
File descriptor event wrapper for event_poller.
Date
2018-05-22
template <class Ch, class Tr = std::char_traits<Ch>, class Fd = sys::fildes>
class sys::basic_ifdstream
Input stream that reads from file descriptor.

Fd

File descriptor type. Can be a wrapper class or int.
- Any type for which streambuf_traits are defined, may be used instead of file descriptor.
- Input operations are non-blocking by default.
Date
2018-05-22
template <class Ch, class Tr = std::char_traits<Ch>, class Fd = sys::fildes>
class sys::basic_ofdstream
Output stream that writes to file descriptor.
- Any type for which streambuf_traits are defined, may be used instead of file descriptor.
- Output operations are non-blocking by default.
- The stream does not flush buffer contents when closed.
Date
2018-05-22
template <class Ch, class Tr = std::char_traits<Ch>, class Fd = sys::fildes>
class sys::basic_fdstream
Input/output stream that reads/writes to/from file descriptor.
- Any type for which streambuf_traits are defined, may be used instead of file descriptor.
- Input and output operations are non-blocking by default.
- The stream does not flush buffer contents when closed.
Date
2018-05-22
class sys::fildes
File descriptor wrapper.
Date
2018-05-22
class sys::fildes_pair
A pair of file descriptors.
- Descriptors are assumed to be for input and output, but it is not enforced.
- This class is usefull in conjunction with basic_fildesbuf when different file descriptors are used for writing and reading from the stream.
Date
2018-05-23
template <class Ch, class Tr = std::char_traits<Ch>, class Fd = sys::fildes>
class sys::basic_fildesbuf
Stream buffer that writes and reads from file descriptor.
Fd
File descriptor type. Can be a wrapper class or int.

Input/output file descriptor operations are assumed to be non-blocking.

Does not flush its contents when closed.
Date
2018-05-23
See
fildes, fildes_pair, socket
template <class T>
class sys::memory_mapping
Memory mapping for files.
Date
2018-10-21
class sys::pipe
A pipe constructed with pipe(2) system call.
Date
2018-05-23
See
pipe2(2)
class sys::event_poller
File descriptor poller.
- File descriptor poller implemented with epoll_create1(2) system call having condition variable-like interface.
- The poller has condition variable interface for waiting and notifying.
Date
2018-05-21
class sys::osysstream
Output stream for standard file descriptors that uses basic_fildesbuf as stream buffer.
- The stream is designed to be used with standard file descriptors 0, 1, 2.
- Underlying file descriptor is not closed or flushed in stream destructor.
Date
2018-05-23
class sys::two_way_pipe
Two-way pipe implemented as two one-way pipes.
- The pipe is designed for communication between parent and child processes.
Date
2018-05-23

Structs

template <class T>
struct sys::fildes_streambuf_traits
Base class for File descriptor streambuf_traits.
Date
2018-05-22
struct sys::streambuf_traits< fildes >
Stream buffer traits for fildes.
Date
2018-05-22
struct sys::streambuf_traits< fd_type >
Stream buffer traits for bare fd_type.
Date
2018-05-22
struct sys::poll_event
File descriptor event wrapper for poll(2) system call.
Date
2018-05-23

Functions

is_a_terminal(sys::fd_type f) -> bool
Returns true, if file descriptor f refers to a terminal.

bad_call

See
isatty(3)