Enum nix::fcntl::PosixFadviseAdvice

#[non_exhaustive]
#[repr(i32)]
pub enum PosixFadviseAdvice {
    POSIX_FADV_NORMAL = 0,
    POSIX_FADV_SEQUENTIAL = 2,
    POSIX_FADV_RANDOM = 1,
    POSIX_FADV_NOREUSE = 5,
    POSIX_FADV_WILLNEED = 3,
    POSIX_FADV_DONTNEED = 4,
}

The specific advice provided to posix_fadvise.

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.

POSIX_FADV_NORMAL = 0

Revert to the default data access behavior.

POSIX_FADV_SEQUENTIAL = 2

The file data will be accessed sequentially.

POSIX_FADV_RANDOM = 1

A hint that file data will be accessed randomly, and prefetching is likely not advantageous.

POSIX_FADV_NOREUSE = 5

The specified data will only be accessed once and then not reused.

POSIX_FADV_WILLNEED = 3

The specified data will be accessed in the near future.

POSIX_FADV_DONTNEED = 4

The specified data will not be accessed in the near future.

Trait Implementations

impl Clone for PosixFadviseAdvice

fn clone(&self) -> PosixFadviseAdvice

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for PosixFadviseAdvice

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

Formats the value using the given formatter.

impl Hash for PosixFadviseAdvice

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 Ord for PosixFadviseAdvice

fn cmp(&self, other: &PosixFadviseAdvice) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized + PartialOrd,

Restrict a value to a certain interval.

impl PartialEq for PosixFadviseAdvice

fn eq(&self, other: &PosixFadviseAdvice) -> 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 PartialOrd for PosixFadviseAdvice

fn partial_cmp(&self, other: &PosixFadviseAdvice) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Copy for PosixFadviseAdvice

impl Eq for PosixFadviseAdvice

impl StructuralPartialEq for PosixFadviseAdvice