dawn::CIONotifier Class Reference

I/O notification handler with poll-based event delivery. More...

#include <notifier.hxx>

Inheritance diagram for dawn::CIONotifier:

Collaboration diagram for dawn::CIONotifier:

Public Types
typedef int(*	notifier_cb_t) (void *priv, io_ddata_t *data)
	Notifier callback function type.

Public Member Functions
int	notifyData (CIOCommon *io, io_ddata_t *data)
	Emit an immediate notification for already-available data.
int	regNotifier (SIONotifier n)
	Register I/O notification callback.

Detailed Description

I/O notification handler with poll-based event delivery.

Implements asynchronous I/O notification using POSIX poll() system call.

Definition at line 30 of file notifier.hxx.

Member Typedef Documentation

notifier_cb_t

typedef int(* dawn::IIONotifier::notifier_cb_t) (void *priv, io_ddata_t *data)

inherited

Notifier callback function type.

Callback signature for I/O notification events.

Parameters

priv	Private context pointer registered with callback.
data	Dynamically allocated I/O data (io_ddata_t*).

Returns

Reserved for future use (currently unused).

Definition at line 37 of file inotifier.hxx.

Member Function Documentation

notifyData()

int CIONotifier::notifyData ( CIOCommon *  io, io_ddata_t *  data  )

virtual

Emit an immediate notification for already-available data.

Poll-based notifiers still use regNotifier() for fd-driven updates; this hook covers synchronous writes where the payload is already available.

Parameters

io	I/O object that produced the data.
data	Data payload to pass to callbacks.

Returns

OK on success, negative error code on failure.

Reimplemented from dawn::IIONotifier.

Definition at line 306 of file notifier.cxx.

regNotifier()

int CIONotifier::regNotifier ( SIONotifier  n )

virtual

Register I/O notification callback.

Implements IIONotifier interface.

Parameters

n	SIONotifier structure containing callback configuration.

Returns

OK on success, negative error code on failure.

Implements dawn::IIONotifier.

Definition at line 232 of file notifier.cxx.

References dawn::CIOCommon::ddata_alloc(), dawn::CObject::getIdV(), dawn::IIONotifier::SIONotifier::io, and dawn::CIOCommon::isNotify().

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

• dawn/include/dawn/io/notifier.hxx
• dawn/src/io/notifier.cxx