Povratne informacije

EventLoop_UnregisterIo Function

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  • 2 min. za čitanje

Header: #include <applibs/eventloop.h>

Unregisters an I/O event from an EventLoop object.

int EventLoop_UnregisterIo(EventLoop *el, EventRegistration *reg);

Parameters

  • el The EventLoop to which the I/O event is registered.

  • reg The EventRegistration object returned by EventLoop_RegisterIo. If this value is NULL, no action occurs and the function returns success.

Return value

Returns 0 for success, or -1 for failure, in which case errno is set to the error value.

Remarks

The EventRegistration object must be returned by the EventLoop_RegisterIo call for the same EventLoop object. Trying to unregister an EventRegistration object from a different EventLoop or another object will lead to undefined behavior.

An active EventRegistration object can be unregistered once. Trying to unregister it multiple times will lead to undefined behavior.