Struct FileFingerprint 

pub struct FileFingerprint {
    pub path: String,
    pub size: i64,
    pub mtime_ns: i64,
    pub ctime_ns: i64,
    pub inode: i64,
}

Fields

path: String

size: i64

mtime_ns: i64

ctime_ns: i64

inode: i64

Filesystem inode (0 on non-Unix / unavailable). Folded into the memo key so an in-place swap that preserves path+size+mtime+ctime but changes the inode (and content) can’t return a stale memoized hash (kunobi-ninja/kache#324).

Implementations

impl FileFingerprint

pub fn from_path(path: &Path) -> Result<Self>

Identity of a file as the memo sees it. Also the cheapest available proof that an external tool did NOT rewrite a file across some operation: any in-place write bumps mtime_ns/ctime_ns (and a replace-by-rename changes inode), so an unchanged fingerprint means unchanged bytes. restore_from_cache reads it that way (#540).

Trait Implementations

impl Clone for FileFingerprint

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for FileFingerprint

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for FileFingerprint

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for FileFingerprint

impl Hash for FileFingerprint

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 FileFingerprint

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for FileFingerprint

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for FileFingerprint