Interface HFunc

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 HFunc
extends FunctionPointer

Functional interface declaration of the HFunc callback.

See Also:

• run(MemorySegment, MemorySegment)

Method Summary

Modifier and Type	Method	Description
void	run(@Nullable MemorySegment key, @Nullable MemorySegment value)	Specifies the type of the function passed to g_hash_table_foreach().
default MemorySegment	toCallback(Arena arena)	Creates a native function pointer to the upcall(MemorySegment, MemorySegment, MemorySegment) method.
default void	upcall(MemorySegment key, MemorySegment value, MemorySegment userData)	The upcall method is called from native code.

Method Details

run

void run(@Nullable MemorySegment key,
 @Nullable MemorySegment value)

Specifies the type of the function passed to g_hash_table_foreach(). It is called with each key/value pair, together with the userData parameter which is passed to g_hash_table_foreach().

Parameters:

key - a key

value - the value corresponding to the key

upcall

default void upcall(MemorySegment key,
 MemorySegment value,
 MemorySegment userData)

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

toCallback

default MemorySegment toCallback(Arena arena)

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

Specified by:

toCallback in interface FunctionPointer

Parameters:

arena - the arena in which the function pointer is allocated

Returns:

the native function pointer