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AllocatedArtifact

wasmer_compiler::engine::artifact

Struct AllocatedArtifact 

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pub struct AllocatedArtifact {
    frame_info_registered: bool,
    frame_info_registration: Option<GlobalFrameInfoRegistration>,
    finished_functions: BoxedSlice<LocalFunctionIndex, FunctionBodyPtr>,
    finished_function_call_trampolines: BoxedSlice<SignatureIndex, VMTrampoline>,
    finished_dynamic_function_trampolines: BoxedSlice<FunctionIndex, FunctionBodyPtr>,
    signatures: BoxedSlice<SignatureIndex, VMSignatureHash>,
    finished_function_lengths: BoxedSlice<LocalFunctionIndex, usize>,
    function_max_stack_usage: BoxedSlice<LocalFunctionIndex, Option<usize>>,
    vm_offsets: VMOffsets,
    elf_image: Option<(usize, DebugInfoSource)>,
}

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§frame_info_registered: bool§frame_info_registration: Option<GlobalFrameInfoRegistration>§finished_functions: BoxedSlice<LocalFunctionIndex, FunctionBodyPtr>§finished_function_call_trampolines: BoxedSlice<SignatureIndex, VMTrampoline>§finished_dynamic_function_trampolines: BoxedSlice<FunctionIndex, FunctionBodyPtr>§signatures: BoxedSlice<SignatureIndex, VMSignatureHash>§finished_function_lengths: BoxedSlice<LocalFunctionIndex, usize>§function_max_stack_usage: BoxedSlice<LocalFunctionIndex, Option<usize>>§vm_offsets: VMOffsets

Precomputed VMOffsets for this artifact’s module, cloned by Artifact::instantiate instead of recomputing on every call.

Safe to cache because VMOffsets::new(pointer_size, module_info) is deterministic, module_info is immutable after compile (the only mutable field name is not a VMOffsets input), and the host’s pointer size is a runtime constant.

Built once in from_parts and in the deserialization path (deserialize_object_native); VMOffsets::new was ~9% of Instance::new time on profile traces of a per-request wasm host calling Module::instantiate in a tight loop.

§elf_image: Option<(usize, DebugInfoSource)>

The base address the module’s code was loaded at, and the raw ELF image bytes it was loaded from, when this artifact was built from a native ELF image. Used to lazily build DWARF debug info for frame symbolication. None for non-ELF artifacts.

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impl AllocatedArtifact

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fn function_extents(&self) -> PrimaryMap<LocalFunctionIndex, FunctionExtent>

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