Struct fs_node::service::NativeElseWasmExecutor

pub struct NativeElseWasmExecutor<D>where
    D: NativeExecutionDispatch,{ /* private fields */ }

A generic CodeExecutor implementation that uses a delegate to determine wasm code equivalence and dispatch to native code when possible, falling back on WasmExecutor when not.

Implementations

impl<D> NativeElseWasmExecutor<D>where
    D: NativeExecutionDispatch,

pub fn new(
    fallback_method: WasmExecutionMethod,
    default_heap_pages: Option<u64>,
    max_runtime_instances: usize,
    runtime_cache_size: u8
) -> NativeElseWasmExecutor<D>

Create new instance.

Parameters

fallback_method - Method used to execute fallback Wasm code.

default_heap_pages - Number of 64KB pages to allocate for Wasm execution. Defaults to DEFAULT_HEAP_PAGES if None is provided.

max_runtime_instances - The number of runtime instances to keep in memory ready for reuse.

runtime_cache_size - The capacity of runtime cache.

pub fn allow_missing_host_functions(
    &mut self,
    allow_missing_host_functions: bool
)

Ignore missing function imports if set true.

Trait Implementations

impl<D> Clone for NativeElseWasmExecutor<D>where
    D: NativeExecutionDispatch,

fn clone(&self) -> NativeElseWasmExecutor<D>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<D> CodeExecutor for NativeElseWasmExecutor<D>where
    D: 'static + NativeExecutionDispatch,

type Error = Error

Externalities error type.

fn call<R, NC>(
    &self,
    ext: &mut dyn Externalities,
    runtime_code: &RuntimeCode<'_>,
    method: &str,
    data: &[u8],
    use_native: bool,
    native_call: Option<NC>
) -> (Result<NativeOrEncoded<R>, Error>, bool)where
    R: Decode + Encode + PartialEq<R>,
    NC: FnOnce() -> Result<R, Box<dyn Error + Send + Sync + 'static, Global>> + UnwindSafe,

Call a given method in the runtime. Returns a tuple of the result (either the output data or an execution error) together with a bool, which is true if native execution was used.

impl<D> GetNativeVersion for NativeElseWasmExecutor<D>where
    D: NativeExecutionDispatch,

fn native_version(&self) -> &NativeVersion

Returns the version of the native runtime.

impl<D> ReadRuntimeVersion for NativeElseWasmExecutor<D>where
    D: NativeExecutionDispatch,

fn read_runtime_version(
    &self,
    wasm_code: &[u8],
    ext: &mut dyn Externalities
) -> Result<Vec<u8, Global>, String>

Reads the runtime version information from the given wasm code.

impl<D> RuntimeVersionOf for NativeElseWasmExecutor<D>where
    D: NativeExecutionDispatch,

fn runtime_version(
    &self,
    ext: &mut dyn Externalities,
    runtime_code: &RuntimeCode<'_>
) -> Result<RuntimeVersion, Error>

Extract RuntimeVersion of the given runtime_code.