Interface TypeValueFreeFunc

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 TypeValueFreeFunc
extends FunctionPointer

Functional interface declaration of the TypeValueFreeFunc callback.

See Also:

• run(Value)

Method Summary

Modifier and Type	Method	Description
void	run(Value value)	Frees any old contents that might be left in the value->data array of the given value.
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)

Frees any old contents that might be left in the value->data array of the given value.

No resources may remain allocated through the GValue contents after this function returns. E.g. for our above string type:

// only free strings without a specific flag for static storage
if (!(value->data[1].v_uint & G_VALUE_NOCOPY_CONTENTS))
  g_free (value->data[0].v_pointer);

Parameters:

value - the value to free

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