Struct cargo::util::rustc::Cache

struct Cache {
    cache_location: Option<PathBuf>,
    dirty: bool,
    data: CacheData,
}

It is a well known fact that rustc is not the fastest compiler in the world. What is less known is that even rustc --version --verbose takes about a hundred milliseconds! Because we need compiler version info even for no-op builds, we cache it here, based on compiler’s mtime and rustup’s current toolchain.

https://github.com/rust-lang/cargo/issues/5315 https://github.com/rust-lang/rust/issues/49761

Fields

cache_location: Option<PathBuf>

dirty: bool

data: CacheData

Implementations

impl Cache

fn load( wrapper: Option<&Path>, workspace_wrapper: Option<&Path>, rustc: &Path, rustup_rustc: &Path, cache_location: Option<PathBuf>, config: &Config ) -> Cache

fn cached_output( &mut self, cmd: &ProcessBuilder, extra_fingerprint: u64 ) -> CargoResult<(String, String)>

Trait Implementations

impl Debug for Cache

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

Formats the value using the given formatter.

impl Drop for Cache

fn drop(&mut self)

Executes the destructor for this type.

Layout

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 136 bytes