SC::AsyncFilePoll Struct Reference

Starts an handle polling operation. More...

#include <Async.h>

Inheritance diagram for SC::AsyncFilePoll:

Public Types
using	CompletionData = AsyncCompletionData
using	Result = AsyncResultOf<AsyncFilePoll, CompletionData>
Public Types inherited from SC::AsyncRequest
enum class	Type : uint8_t {   LoopTimeout ,   LoopWakeUp ,   LoopWork ,   ProcessExit ,   SocketAccept ,   SocketConnect ,   SocketSend ,   SocketReceive ,   SocketClose ,   FileRead ,   FileWrite ,   FileClose ,   FilePoll }
	Type of async request. More...

Public Member Functions
SC::Result	start (AsyncEventLoop &eventLoop, FileDescriptor::Handle fileDescriptor)
	Starts a file descriptor poll operation, monitoring its readiness with appropriate OS API.
Public Member Functions inherited from SC::AsyncRequest
void	setDebugName (const char *newDebugName)
void	executeOn (AsyncSequence &sequence)
	Adds the request to be executed on a specific AsyncSequence.
Result	executeOn (AsyncTaskSequence &task, ThreadPool &pool)
	Adds the request to be executed on a specific AsyncTaskSequence.
void	disableThreadPool ()
	Disables the thread-pool usage for this request.
	AsyncRequest (Type type)
	Constructs a free async request of given type.
Result	stop (AsyncEventLoop &eventLoop, Function< void(AsyncResult &)> *afterStopped=nullptr)
	Ask to stop current async operation.
bool	isFree () const
	Returns true if this request is free.
bool	isCancelling () const
	Returns true if this request is being cancelled.
bool	isActive () const
	Returns true if this request is active or being reactivated.
Type	getType () const
	Returns request type.
Result	start (AsyncEventLoop &eventLoop)
	Shortcut for AsyncEventLoop::start.
void	setUserFlags (uint16_t externalFlags)
	Sets user flags, holding some meaningful data for the caller.
uint16_t	getUserFlags () const
	Gets user flags, holding some meaningful data for the caller.
Function< void(AsyncResult &)> *	getCloseCallback ()
	Returns currently set close callback (if any) passed to AsyncRequest::stop.
const Function< void(AsyncResult &)> *	getCloseCallback () const

Public Attributes
Function< void(Result &)>	callback
Public Attributes inherited from SC::AsyncRequest
AsyncRequest *	next = nullptr
AsyncRequest *	prev = nullptr

Friends
struct	AsyncEventLoop

Additional Inherited Members
Protected Member Functions inherited from SC::AsyncRequest
Result	checkState ()
void	queueSubmission (AsyncEventLoop &eventLoop)
AsyncTaskSequence *	getTask ()
Protected Attributes inherited from SC::AsyncRequest
AsyncSequence *	sequence = nullptr

Detailed Description

Starts an handle polling operation.

Uses GetOverlappedResult (windows), kevent (macOS), epoll (Linux) and io_uring (Linux). Callback will be called when any of the three API signals readiness events on the given file descriptor. Check File System Watcher for an example usage of this notification.

Member Function Documentation

start()

SC::Result SC::AsyncFilePoll::start	(	AsyncEventLoop &	eventLoop,
		FileDescriptor::Handle	fileDescriptor )

Starts a file descriptor poll operation, monitoring its readiness with appropriate OS API.

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

• Async.h