Interface MountOperation.ShowUnmountProgressCallback

All Superinterfaces:

FunctionPointer

Enclosing class:

MountOperation

Functional Interface:

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

@FunctionalInterface
public static interface MountOperation.ShowUnmountProgressCallback
extends FunctionPointer

Functional interface declaration of the ShowUnmountProgressCallback callback.

See Also:

• run(String, long, long)

Method Summary

Modifier and Type	Method	Description
void	run(String message, long timeLeft, long bytesLeft)	Emitted when an unmount operation has been busy for more than some time (typically 1.5 seconds).
default MemorySegment	toCallback(Arena arena)	Creates a native function pointer to the upcall(MemorySegment, MemorySegment, long, long) method.
default void	upcall(MemorySegment sourceMountOperation, MemorySegment message, long timeLeft, long bytesLeft)	The upcall method is called from native code.

Method Details

run

void run(String message,
 long timeLeft,
 long bytesLeft)

Emitted when an unmount operation has been busy for more than some time (typically 1.5 seconds).

When unmounting or ejecting a volume, the kernel might need to flush pending data in its buffers to the volume stable storage, and this operation can take a considerable amount of time. This signal may be emitted several times as long as the unmount operation is outstanding, and then one last time when the operation is completed, with bytesLeft set to zero.

Implementations of GMountOperation should handle this signal by showing an UI notification, and then dismiss it, or show another notification of completion, when bytesLeft reaches zero.

If the message contains a line break, the first line should be presented as a heading. For example, it may be used as the primary text in a GtkMessageDialog.

Since:

2.34

upcall

default void upcall(MemorySegment sourceMountOperation,
 MemorySegment message,
 long timeLeft,
 long bytesLeft)

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

toCallback

default MemorySegment toCallback(Arena arena)

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

Specified by:

toCallback in interface FunctionPointer

Parameters:

arena - the arena in which the function pointer is allocated

Returns:

the native function pointer