Enum advice

#[non_exhaustive]
#[repr(u8)]
pub enum advice {
    DONTNEED = 1,
    NOREUSE = 2,
    NORMAL = 3,
    RANDOM = 4,
    SEQUENTIAL = 5,
    WILLNEED = 6,
}

File or memory access pattern advisory information.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

DONTNEED = 1

The application expects that it will not access the specified data in the near future.

NOREUSE = 2

The application expects to access the specified data once and then not reuse it thereafter.

NORMAL = 3

The application has no advice to give on its behavior with respect to the specified data.

RANDOM = 4

The application expects to access the specified data in a random order.

SEQUENTIAL = 5

The application expects to access the specified data sequentially from lower offsets to higher offsets.

WILLNEED = 6

The application expects to access the specified data in the near future.

Trait Implementations

impl Clone for advice

fn clone(&self) -> advice

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for advice

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Hash for advice

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for advice

fn eq(&self, other: &advice) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for advice

impl Eq for advice

impl StructuralPartialEq for advice