Struct FilesystemContractRuntimeCache 

pub struct FilesystemContractRuntimeCache { /* private fields */ }

A cache that stores precompiled contract executables in a directory of a filesystem.

This directory can optionally be a temporary directory. If created with Self::test the directory will be removed when the last instance of this cache is dropped.

Clones of this type share the same underlying state and information. The cache is thread safe and atomic.

This cache however does not implement any clean-up policies. While it is possible to truncate a file that has been written to the cache before (put an empty buffer), the file will remain in place until an operator (or somebody else) removes files at their own discretion.

Implementations

impl FilesystemContractRuntimeCache

pub fn new<SP: AsRef<Path> + ?Sized>( home_dir: &Path, store_path: Option<&SP>, ) -> Result<Self>

pub fn with_memory_cache<SP: AsRef<Path> + ?Sized>( home_dir: &Path, store_path: Option<&SP>, memory_cache_size: usize, ) -> Result<Self>

When setting up a cache of compiled contracts, also set-up a size element in-memory cache.

This additional cache is usually used to store loaded artifacts, but data stored can really be anything and depends on the specific VM kind.

Note though, that this memory cache is not used to additionally cache files from the filesystem – OS page cache already does that for us transparently.

pub fn test() -> Result<Self>

Trait Implementations

impl Clone for FilesystemContractRuntimeCache

fn clone(&self) -> FilesystemContractRuntimeCache

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl ContractRuntimeCache for FilesystemContractRuntimeCache

Cache for compiled contracts code in plain filesystem.

fn handle(&self) -> Box<dyn ContractRuntimeCache>

fn memory_cache(&self) -> &AnyCache

fn put(&self, key: &CryptoHash, value: CompiledContractInfo) -> Result<()>

fn get(&self, key: &CryptoHash) -> Result<Option<CompiledContractInfo>>

fn has(&self, key: &CryptoHash) -> Result<bool>