Package ch.bailu.gtk.glib

Class SourceFuncs

java.lang.Object
ch.bailu.gtk.type.Type
ch.bailu.gtk.type.Pointer
ch.bailu.gtk.type.Record
ch.bailu.gtk.glib.SourceFuncs
All Implemented Interfaces:
PointerInterface
public class SourceFuncs extends Record
The `GSourceFuncs` struct contains a table of
functions used to handle event sources in a generic manner.

For idle sources, the prepare and check functions always return %TRUE
to indicate that the source is always ready to be processed. The prepare
function also returns a timeout value of 0 to ensure that the poll() call
doesn't block (since that would be time wasted which could have been spent
running the idle function).

For timeout sources, the prepare and check functions both return %TRUE
if the timeout interval has expired. The prepare function also returns
a timeout value to ensure that the poll() call doesn't block too long
and miss the next timeout.

For file descriptor sources, the prepare function typically returns %FALSE,
since it must wait until poll() has been called before it knows whether
any events need to be processed. It sets the returned timeout to -1 to
indicate that it doesn't mind how long the poll() call blocks. In the
check function, it tests the results of the poll() call to see if the
required condition has been met, and returns %TRUE if so.

https://docs.gtk.org/glib/struct.SourceFuncs.html