query_unix_fd

Description:

[ Version ( since = "2.36" ) ]
public IOCondition query_unix_fd (void* tag)

Queries the events reported for the fd corresponding to tag on this during the last poll.

The return value of this function is only defined when the function is called from the check or dispatch functions for this.

This API is only intended to be used by implementations of SignalSource. Do not call this API on a SignalSource that you did not create.

As the name suggests, this function is not available on Windows.

Parameters:

this

a SignalSource
tag

the tag from add_unix_fd

Returns:

the conditions reported on the fd