[−][src]Crate sc_executor

A crate that provides means of executing/dispatching calls into the runtime.

There are a few responsibilities of this crate at the moment:

It provides an implementation of a common entrypoint for calling into the runtime, both wasm and compiled.
It defines the environment for the wasm execution, namely the host functions that are to be provided into the wasm runtime module.
It also provides the required infrastructure for executing the current wasm runtime (specified by the current value of :code in the provided externalities), i.e. interfacing with wasm engine used, instance cache.

Re-exports

pub use wasmi;

deprecated_host_interface	Definition and implementation of the old and deprecated Substrate runtime interface for the host.
error	Rust executor possible errors.
sandbox	This module implements sandboxing support in the runtime.

convert_args	Converts arguments into respective WASM types.
gen_signature	Generates a WASM signature for given list of parameters.
impl_wasm_host_interface	Implements the wasm host interface for the given type.
marshall	Pass the list of parameters by converting them to respective WASM types.
native_executor_instance	Implements a `NativeExecutionDispatch` for provided parameters.
unmarshall_args	Converts the list of arguments coming from WASM into their native types.

NativeExecutor	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.
NativeVersion
RuntimeVersion	Runtime version. This should not be thought of as classic Semver (major/minor/tiny). This triplet have different semantics and mis-interpretation could cause problems. In particular: bug fixes should result in an increment of `spec_version` and possibly `authoring_version`, absolutely not `impl_version` since they change the semantics of the runtime.

Specification of different methods of executing the runtime Wasm code.

Codec	Trait that allows zero-copy read/write of value-references to/from slices in LE format.
NativeExecutionDispatch	Delegate for dispatching a CodeExecutor call.
RuntimeInfo	Provides runtime information.

call_in_wasm	Call the given `function` in the given wasm `code`.
call_in_wasm_with_host_functions	Non-generic version of `call_in_wasm` that takes the `host_functions` as parameter. For more information please see `call_in_wasm`.
with_externalities_safe	Set up the externalities and safe calling environment to execute runtime calls.