WPILibC++ 2023.4.3
wpi::uv::Async<> Class Referencefinal

Async specialization for no data parameters. More...

#include <wpinet/uv/Async.h>

Inheritance diagram for wpi::uv::Async<>:
wpi::uv::HandleImpl< Async<>, uv_async_t > wpi::uv::Handle

Public Member Functions

 Async (const std::shared_ptr< Loop > &loop, const private_init &)
 
 ~Async () noexcept override
 
void Send ()
 Wakeup the event loop and emit the event. More...
 
void UnsafeSend ()
 Wakeup the event loop and emit the event. More...
 
- Public Member Functions inherited from wpi::uv::HandleImpl< Async<>, uv_async_t >
std::shared_ptr< Async<> > shared_from_this ()
 
std::shared_ptr< const Async<> > shared_from_this () const
 
uv_async_tGetRaw () const noexcept
 Get the underlying handle data structure. More...
 
- Public Member Functions inherited from wpi::uv::Handle
 Handle (const Handle &)=delete
 
 Handle (Handle &&)=delete
 
Handleoperator= (const Handle &)=delete
 
Handleoperator= (Handle &&)=delete
 
virtual ~Handle () noexcept
 
Type GetType () const noexcept
 Get the type of the handle. More...
 
std::string_view GetTypeName () const noexcept
 Get the name of the type of the handle. More...
 
std::shared_ptr< LoopGetLoop () const noexcept
 Get the loop where this handle runs. More...
 
LoopGetLoopRef () const noexcept
 Get the loop where this handle runs. More...
 
bool IsActive () const noexcept
 Check if the handle is active. More...
 
bool IsClosing () const noexcept
 Check if a handle is closing or closed. More...
 
void Close () noexcept
 Request handle to be closed. More...
 
void SetLoopClosing (bool loopClosing) noexcept
 Set if the loop is closing. More...
 
bool IsLoopClosing () const noexcept
 Get the loop closing status. More...
 
void Reference () noexcept
 Reference the given handle. More...
 
void Unreference () noexcept
 Unreference the given handle. More...
 
bool HasReference () const noexcept
 Check if the given handle is referenced. More...
 
size_t RawSize () const noexcept
 Return the size of the underlying handle type. More...
 
uv_handle_tGetRawHandle () const noexcept
 Get the underlying handle data structure. More...
 
void SetBufferAllocator (std::function< Buffer(size_t)> alloc, std::function< void(Buffer &)> dealloc)
 Set the functions used for allocating and releasing buffers. More...
 
void FreeBuf (Buffer &buf) const noexcept
 Free a buffer. More...
 
template<typename T = void>
std::shared_ptr< T > GetData () const
 Gets user-defined data. More...
 
void SetData (std::shared_ptr< void > data)
 Sets user-defined data. More...
 
void ReportError (int err) const
 Report an error. More...
 

Static Public Member Functions

static std::shared_ptr< AsyncCreate (Loop &loop)
 Create an async handle. More...
 
static std::shared_ptr< AsyncCreate (const std::shared_ptr< Loop > &loop)
 Create an async handle. More...
 

Public Attributes

sig::Signal wakeup
 Signal generated (on event loop thread) when the async event occurs. More...
 
- Public Attributes inherited from wpi::uv::Handle
sig::Signal< Errorerror
 Error signal. More...
 
sig::Signal closed
 Closed signal. More...
 

Additional Inherited Members

- Public Types inherited from wpi::uv::Handle
using Type = uv_handle_type
 
- Protected Member Functions inherited from wpi::uv::HandleImpl< Async<>, uv_async_t >
 HandleImpl ()
 
- Protected Member Functions inherited from wpi::uv::Handle
 Handle (uv_handle_t *uv_handle)
 
void Keep () noexcept
 
void Release () noexcept
 
void ForceClosed () noexcept
 
template<typename F , typename... Args>
bool Invoke (F &&f, Args &&... args) const
 
- Static Protected Member Functions inherited from wpi::uv::Handle
static void AllocBuf (uv_handle_t *handle, size_t size, uv_buf_t *buf)
 
static void DefaultFreeBuf (Buffer &buf)
 

Detailed Description

Async specialization for no data parameters.

The async callback may or may not be called for every call to Send() (e.g. the calls may be coaleasced).

Constructor & Destructor Documentation

◆ Async()

wpi::uv::Async<>::Async ( const std::shared_ptr< Loop > &  loop,
const private_init &   
)
inline

◆ ~Async()

wpi::uv::Async<>::~Async ( )
overridenoexcept

Member Function Documentation

◆ Create() [1/2]

static std::shared_ptr< Async > wpi::uv::Async<>::Create ( const std::shared_ptr< Loop > &  loop)
static

Create an async handle.

Parameters
loopLoop object where this handle runs.

◆ Create() [2/2]

static std::shared_ptr< Async > wpi::uv::Async<>::Create ( Loop loop)
inlinestatic

Create an async handle.

Parameters
loopLoop object where this handle runs.

◆ Send()

void wpi::uv::Async<>::Send ( )
inline

Wakeup the event loop and emit the event.

It’s safe to call this function from any thread. An async event will be emitted on the loop thread.

◆ UnsafeSend()

void wpi::uv::Async<>::UnsafeSend ( )
inline

Wakeup the event loop and emit the event.

This function assumes the loop still exists, which makes it a bit faster.

It’s safe to call this function from any thread. An async event will be emitted on the loop thread.

Member Data Documentation

◆ wakeup

Signal generated (on event loop thread) when the async event occurs.


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