Package org.gnome.gobject

Interface TypeValuePeekPointerFunc

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 TypeValuePeekPointerFunc
extends FunctionPointer

Functional interface declaration of the TypeValuePeekPointerFunc callback.

See Also:

• run(org.gnome.gobject.Value)

Method Summary

Modifier and Type	Method	Description
MemorySegment	run(Value value)	If the value contents fit into a pointer, such as objects or strings, return this pointer, so the caller can peek at the current contents.
default MemorySegment	toCallback(Arena arena)	Creates a native function pointer to the upcall(java.lang.foreign.MemorySegment) method.
default MemorySegment	upcall(MemorySegment value)	The upcall method is called from native code.

Method Details

run

MemorySegment run(Value value)

If the value contents fit into a pointer, such as objects or strings, return this pointer, so the caller can peek at the current contents.

To extend on our above string example:

return value->data[0].v_pointer;
 

upcall

default MemorySegment upcall(MemorySegment value)

The upcall method is called from native code. The parameters are marshaled and run(org.gnome.gobject.Value) 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 function pointer will be allocated in this arena

Returns:

the native function pointer