Interface TypeValueInitFunc

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("org.javagi.JavaGI")
public interface TypeValueInitFunc
extends FunctionPointer

Functional interface declaration of the TypeValueInitFunc callback.

See Also:

• run(Value)

Method Summary

Modifier and Type	Method	Description
void	run(Value value)	Initializes the value contents by setting the fields of the value->data array.
default MemorySegment	toCallback(Arena arena)	Creates a native function pointer to the upcall(MemorySegment) method.
default void	upcall(MemorySegment value)	The upcall method is called from native code.

Method Details

run

void run(Value value)

Initializes the value contents by setting the fields of the value->data array.

The data array of the GValue passed into this function was zero-filled with memset(), so no care has to be taken to free any old contents. For example, in the case of a string value that may never be null, the implementation might look like:

value->data[0].v_pointer = g_strdup ("");

Parameters:

value - the value to initialize

Since:

2.78

upcall

default void upcall(MemorySegment value)

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

toCallback

default MemorySegment toCallback(Arena arena)

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

Specified by:

toCallback in interface FunctionPointer

Parameters:

arena - the arena in which the function pointer is allocated

Returns:

the native function pointer