engine::io::RwBase Class Reference

#include <userver/engine/io/common.hpp>

Detailed Description

Interface for readable and writable streams

Definition at line 106 of file common.hpp.

Inheritance diagram for engine::io::RwBase:

Public Member Functions
ReadableBase &	GetReadableBase ()
WritableBase &	GetWritableBase ()
virtual bool	IsValid () const =0
	Whether the stream is valid.
virtual bool	WaitReadable (Deadline)=0
	Suspends current task until the stream has data available.
virtual std::optional< size_t >	ReadNoblock (void *buf, size_t len)
virtual size_t	ReadSome (void *buf, size_t len, Deadline deadline)=0
	Receives at least one byte from the stream.
virtual size_t	ReadAll (void *buf, size_t len, Deadline deadline)=0
impl::ContextAccessor *	TryGetContextAccessor ()
	For internal use only.
virtual bool	WaitWriteable (Deadline deadline)=0
	Suspends current task until the data is available.
virtual size_t	WriteAll (const void *buf, size_t len, Deadline deadline)=0
	Sends exactly len bytes of buf.
virtual size_t	WriteAll (std::initializer_list< IoData > list, Deadline deadline)
impl::ContextAccessor *	TryGetContextAccessor ()
	For internal use only.

Protected Member Functions
void	SetReadableContextAccessor (impl::ContextAccessor *ca)
void	SetWritableContextAccessor (impl::ContextAccessor *ca)

Member Function Documentation

GetReadableBase()

ReadableBase & engine::io::RwBase::GetReadableBase ( )

inline

Definition at line 110 of file common.hpp.

GetWritableBase()

WritableBase & engine::io::RwBase::GetWritableBase ( )

inline

Definition at line 112 of file common.hpp.

IsValid()

virtual bool engine::io::ReadableBase::IsValid ( ) const

pure virtualinherited

Whether the stream is valid.

Implemented in engine::io::PipeReader, engine::io::Socket, and engine::io::TlsWrapper.

ReadAll()

virtual size_t engine::io::ReadableBase::ReadAll ( void *  buf, size_t  len, Deadline  deadline  )

pure virtualinherited

Receives exactly len bytes from the stream.

Note

Can return less than len if stream is closed by peer.

Implemented in engine::io::PipeReader, engine::io::Socket, and engine::io::TlsWrapper.

ReadNoblock()

virtual std::optional< size_t > engine::io::ReadableBase::ReadNoblock ( void *  buf, size_t  len  )

inlinevirtualinherited

Receives up to len (including zero) bytes from the stream.

Returns

filled-in optional on data presence (e.g. 0, 1, 2... bytes) empty optional otherwise

Reimplemented in engine::io::Socket, and engine::io::TlsWrapper.

Definition at line 40 of file common.hpp.

ReadSome()

virtual size_t engine::io::ReadableBase::ReadSome ( void *  buf, size_t  len, Deadline  deadline  )

pure virtualinherited

Receives at least one byte from the stream.

Implemented in engine::io::PipeReader, engine::io::Socket, and engine::io::TlsWrapper.

SetReadableContextAccessor()

void engine::io::ReadableBase::SetReadableContextAccessor ( impl::ContextAccessor *  ca )

inlineprotectedinherited

Definition at line 58 of file common.hpp.

SetWritableContextAccessor()

void engine::io::WritableBase::SetWritableContextAccessor ( impl::ContextAccessor *  ca )

inlineprotectedinherited

Definition at line 96 of file common.hpp.

TryGetContextAccessor() [1/2]

impl::ContextAccessor * engine::io::ReadableBase::TryGetContextAccessor ( )

inlineinherited

For internal use only.

Definition at line 55 of file common.hpp.

TryGetContextAccessor() [2/2]

impl::ContextAccessor * engine::io::WritableBase::TryGetContextAccessor ( )

inlineinherited

For internal use only.

Definition at line 93 of file common.hpp.

WaitReadable()

virtual bool engine::io::ReadableBase::WaitReadable ( Deadline  )

pure virtualinherited

Suspends current task until the stream has data available.

Implemented in engine::io::PipeReader, engine::io::Socket, and engine::io::TlsWrapper.

WaitWriteable()

virtual bool engine::io::WritableBase::WaitWriteable ( Deadline  deadline )

pure virtualinherited

Suspends current task until the data is available.

Implemented in engine::io::PipeWriter, engine::io::Socket, and engine::io::TlsWrapper.

WriteAll() [1/2]

virtual size_t engine::io::WritableBase::WriteAll ( const void *  buf, size_t  len, Deadline  deadline  )

pure virtualinherited

Sends exactly len bytes of buf.

Note

Can return less than len if stream is closed by peer.

Implemented in engine::io::PipeWriter, engine::io::Socket, and engine::io::TlsWrapper.

WriteAll() [2/2]

virtual size_t engine::io::WritableBase::WriteAll ( std::initializer_list< IoData >  list, Deadline  deadline  )

inlinevirtualinherited

Definition at line 84 of file common.hpp.

---

The documentation for this class was generated from the following file:

• userver/engine/io/common.hpp