Struct DiskCache 

pub struct DiskCache { /* private fields */ }

Cache files on disk: path.geopc under root for the file path, of this build of the kernel (see geop_core_program::cache).

Implementations

impl DiskCache

pub fn of(root: PathBuf) -> Option<Self>

The cache files under root, of the executable running: its version, and its size and time on disk, so that a kernel built again makes again what an older one kept. None if the executable cannot be told apart: nothing is then kept on disk.

pub fn cache(this: Option<Self>) -> Cache

What self makes of files: kept in it, if there is one, and in memory.

Trait Implementations

impl CacheStore for DiskCache

fn write(&self, path: &str, text: &str)

Written whole, then put in place: a run reading it meanwhile, or one cut short, sees the old file or the new, never half of one. Not written is only made again next time, so it is said on stderr and nothing else.

fn build(&self) -> &str

What tells this build of the kernel from every other: what it made is only read back by the same build.

fn read(&self, path: &str) -> Option<String>

The text of the cache file path, if there is one.