FrameState enumeration <nucleus/kernel.h>

The FrameState enumeration specifies the possible states of a page frame. These constants may also be used as indicies to frame lists, as the Frame Manager maintains a list for each, excepting FRAME_USED.

Syntax

enum FrameState {
	FRAME_FREE,
	FRAME_ZERO,

	FRAME_USED,
};

Constants

The frame is available but has unspecified content. When allocated, this frame should either be filled with zero bytes, or completely overwritten with some other data.

The frame is available and is filled with zero bytes.

The frame is currently in use somewhere and is not being managed by the Frame Manager. As such, this constant may not be used as an index for a frame list.