Package org.gnome.glib

Interface SourceFunc

All Superinterfaces:

FunctionPointer

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.

@FunctionalInterface
@Generated("io.github.jwharm.JavaGI")
public interface SourceFunc
extends FunctionPointer

Functional interface declaration of the SourceFunc callback.

See Also:

• run()

Method Summary

Modifier and Type	Method	Description
boolean	run()	Specifies the type of function passed to GLib.timeoutAdd(int, int, org.gnome.glib.SourceFunc), GLib#timeoutAddFull, GLib.idleAdd(int, org.gnome.glib.SourceFunc), and GLib#idleAddFull.
default MemorySegment	toCallback(Arena arena)	Creates a native function pointer to the upcall(java.lang.foreign.MemorySegment) method.
default int	upcall(MemorySegment userData)	The upcall method is called from native code.

Method Details

run

boolean run()

Specifies the type of function passed to GLib.timeoutAdd(int, int, org.gnome.glib.SourceFunc), GLib#timeoutAddFull, GLib.idleAdd(int, org.gnome.glib.SourceFunc), and GLib#idleAddFull.

When calling Source.setCallback(org.gnome.glib.SourceFunc), you may need to cast a function of a different type to this type. Use GLib#SOURCEFUNC to avoid warnings about incompatible function types.

upcall

default int upcall(MemorySegment userData)

The upcall method is called from native code. The parameters are marshaled and run() is executed.

toCallback

default MemorySegment toCallback(Arena arena)

Creates a native function pointer to the upcall(java.lang.foreign.MemorySegment) method.

Specified by:

toCallback in interface FunctionPointer

Parameters:

arena - the arena in which the function pointer is allocated

Returns:

the native function pointer