Struct wasmer::Artifact

pub struct Artifact { /* private fields */ }

A compiled wasm module, ready to be instantiated.

Implementations

impl Artifact

pub fn new( engine: &Engine, data: &[u8], tunables: &dyn Tunables ) -> Result<Artifact, CompileError>

Compile a data buffer into a ArtifactBuild, which may then be instantiated.

pub fn allocated(&self) -> bool

This indicates if the Artifact is allocated and can be run by the current host. In case it can’t be run (for example, if the artifact is cross compiled to other architecture), it will return false.

pub fn id(&self) -> &ArtifactId

A unique identifier for this object.

This exists to allow us to compare two Artifacts for equality. Otherwise, comparing two trait objects unsafely relies on implementation details of trait representation.

pub unsafe fn deserialize( engine: &Engine, bytes: OwnedBuffer ) -> Result<Artifact, DeserializeError>

Deserialize a serialized artifact.

Safety

This function loads executable code into memory. You must trust the loaded bytes to be valid for the chosen engine and for the host CPU architecture. In contrast to Self::deserialize_unchecked the artifact layout is validated, which increases safety.

pub unsafe fn deserialize_unchecked( engine: &Engine, bytes: OwnedBuffer ) -> Result<Artifact, DeserializeError>

Deserialize a serialized artifact.

NOTE: You should prefer Self::deserialize.

Safety

See Self::deserialize. In contrast to the above, this function skips artifact layout validation, which increases the risk of loading invalid artifacts.

pub fn from_parts( engine_inner: &mut EngineInner, artifact: ArtifactBuildVariant, target: &Target ) -> Result<Artifact, DeserializeError>

Construct a ArtifactBuild from component parts.

pub fn is_deserializable(bytes: &[u8]) -> bool

Check if the provided bytes look like a serialized ArtifactBuild.

impl Artifact

pub fn register_frame_info(&mut self) -> Result<(), DeserializeError>

👎Deprecated since 4.0.0: done automaticaly by Artifact::from_parts, use ‘take_frame_info_registration’ if you use this method

Register thie Artifact stack frame information into the global scope.

This is not required anymore as it’s done automaticaly when creating by ‘Artifact::from_parts’

pub fn take_frame_info_registration( &mut self ) -> Option<GlobalFrameInfoRegistration>

👎Deprecated since 4.0.0: done automaticaly by Artifact::from_parts.

The GlobalFrameInfoRegistration needs to be transfered to EngineInner if register_frame_info has been used.

pub fn finished_functions( &self ) -> &BoxedSlice<LocalFunctionIndex, FunctionBodyPtr>

Returns the functions allocated in memory or this Artifact ready to be run.

pub fn finished_function_call_trampolines( &self ) -> &BoxedSlice<SignatureIndex, unsafe extern "C" fn(_: *mut VMContext, _: *const VMFunctionBody, _: *mut RawValue)>

Returns the function call trampolines allocated in memory of this Artifact, ready to be run.

pub fn finished_dynamic_function_trampolines( &self ) -> &BoxedSlice<FunctionIndex, FunctionBodyPtr>

Returns the dynamic function trampolines allocated in memory of this Artifact, ready to be run.

pub fn signatures(&self) -> &BoxedSlice<SignatureIndex, VMSharedSignatureIndex>

Returns the associated VM signatures for this Artifact.

pub fn preinstantiate(&self) -> Result<(), InstantiationError>

Do preinstantiation logic that is executed before instantiating

pub unsafe fn instantiate( &self, tunables: &dyn Tunables, imports: &[VMExtern], context: &mut StoreObjects ) -> Result<VMInstance, InstantiationError>

Crate an Instance from this Artifact.

Safety

See VMInstance::new.

pub unsafe fn finish_instantiation( &self, config: &VMConfig, trap_handler: Option<*const dyn Fn(*mut EXCEPTION_POINTERS) -> bool + Sync + Send>, handle: &mut VMInstance ) -> Result<(), InstantiationError>

Finishes the instantiation of a just created VMInstance.

Safety

See VMInstance::finish_instantiation.

pub fn generate_metadata<'data>( data: &'data [u8], compiler: &dyn Compiler, tunables: &dyn Tunables, features: &Features ) -> Result<(CompileModuleInfo, PrimaryMap<LocalFunctionIndex, FunctionBodyData<'data>>, Vec<DataInitializer<'data>, Global>, Option<ModuleTranslationState>), CompileError>

Generate a compilation

pub fn metadata<'a>( compiler: &dyn Compiler, data: &'a [u8], metadata_prefix: Option<&str>, target: &Target, tunables: &dyn Tunables, features: &Features ) -> Result<(ModuleMetadata, Option<ModuleTranslationState>, PrimaryMap<LocalFunctionIndex, FunctionBodyData<'a>>), CompileError>

Generate the metadata object for the module

pub fn generate_object<'data>( compiler: &dyn Compiler, data: &[u8], metadata_prefix: Option<&str>, target: &'data Target, tunables: &dyn Tunables, features: &Features ) -> Result<(ModuleInfo, Object<'data>, usize, Box<dyn SymbolRegistry, Global>), CompileError>

Compile a module into an object file, which can be statically linked against.

The metadata_prefix is an optional prefix for the object name to make the function names in the object file unique. When set, the function names will be wasmer_function_{prefix}_{id} and the object metadata will be addressable using WASMER_METADATA_{prefix}_LENGTH and WASMER_METADATA_{prefix}_DATA.

pub unsafe fn deserialize_object( engine: &Engine, bytes: OwnedBuffer ) -> Result<Artifact, DeserializeError>

Deserialize a ArtifactBuild from an object file

Safety

The object must be a valid static object generated by wasmer.

Trait Implementations

impl<'a> ArtifactCreate<'a> for Artifact

type OwnedDataInitializer = <ArtifactBuildVariant as ArtifactCreate<'a>>::OwnedDataInitializer

Type of OwnedDataInitializer returned by the data_initializers method

type OwnedDataInitializerIterator = <ArtifactBuildVariant as ArtifactCreate<'a>>::OwnedDataInitializerIterator

Type of iterator returned by the data_initializers method

fn set_module_info_name(&mut self, name: String) -> bool

Sets the ModuleInfo name

fn create_module_info(&self) -> Arc<ModuleInfo, Global>

Create a ModuleInfo for instantiation

fn module_info(&self) -> &ModuleInfo

Returns the ModuleInfo for instantiation

fn features(&self) -> &Features

Returns the features for this Artifact

fn cpu_features(&self) -> EnumSet<CpuFeature>

Returns the CPU features for this Artifact

fn data_initializers( &'a self ) -> <Artifact as ArtifactCreate<'a>>::OwnedDataInitializerIterator

Returns data initializers to pass to VMInstance::initialize

fn memory_styles(&self) -> &PrimaryMap<MemoryIndex, MemoryStyle>

Returns the memory styles associated with this Artifact.

fn table_styles(&self) -> &PrimaryMap<TableIndex, TableStyle>

Returns the table plans associated with this Artifact.

fn serialize(&self) -> Result<Vec<u8, Global>, SerializeError>

Serializes an artifact into bytes

impl Debug for Artifact

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

Formats the value using the given formatter.

impl PartialEq<Artifact> for Artifact

fn eq(&self, other: &Artifact) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Eq for Artifact