Struct wasm::RuntimeInstance

pub struct RuntimeInstance<'b, H = EmptyHookSet>
where
    H: HookSet,
{
    pub modules: Vec<ExecutionInfo<'b>>,
    module_map: BTreeMap<String, usize>,
    lut: Option<Lut>,
    pub hook_set: H,
}

Fields

modules: Vec<ExecutionInfo<'b>>

module_map: BTreeMap<String, usize>

lut: Option<Lut>

hook_set: H

Implementations

impl<'b> RuntimeInstance<'b, EmptyHookSet>

pub fn new(validation_info: &ValidationInfo<'b>) -> CustomResult<Self>

pub fn new_named( module_name: &str, validation_info: &ValidationInfo<'b> ) -> CustomResult<Self>

impl<'b, H> RuntimeInstance<'b, H>

where H: HookSet,

pub fn new_with_hooks( module_name: &str, validation_info: &ValidationInfo<'b>, hook_set: H ) -> CustomResult<Self>

pub fn get_function_by_name( &self, module_name: &str, function_name: &str ) -> Result<FunctionRef, RuntimeError>

pub fn get_function_by_index( &self, module_idx: usize, function_idx: usize ) -> Result<FunctionRef, RuntimeError>

pub fn add_module( &mut self, module_name: &str, validation_info: &ValidationInfo<'b> ) -> CustomResult<()>

pub fn invoke<Param: InteropValueList, Returns: InteropValueList>( &mut self, function_ref: &FunctionRef, params: Param ) -> Result<Returns, RuntimeError>

pub fn invoke_dynamic( &mut self, function_ref: &FunctionRef, params: Vec<Value>, ret_types: &[ValType] ) -> Result<Vec<Value>, RuntimeError>

Invokes a function with the given parameters, and return types which are not known at compile time.

fn get_indicies( &self, module_name: &str, function_name: &str ) -> Result<(usize, usize), RuntimeError>

Get the indicies of a module and function by their names.

Arguments

• module_name: The module in which to find the function.
• function_name: The name of the function to find inside the module. The function must be a local function and not an import.

Returns

• Ok((module_idx, func_idx)), where module_idx is the internal index of the module inside the RuntimeInstance, and func_idx is the internal index of the function inside the module.
• Err(RuntimeError::ModuleNotFound), if the module is not found.
• Err(RuntimeError::FunctionNotFound, if the function is not found within the module.

fn verify_function_ref( &self, function_ref: &FunctionRef ) -> Result<(usize, usize), RuntimeError>

Verify that the function reference is still valid. A function reference may be invalid if it created from another RuntimeInstance or the modules inside the instance have been changed in a way that the indicies inside the FunctionRef would be invalid.

Note: this function ensures that making an unchecked indexation will not cause a panic.

Returns

• Ok((function_ref.module_idx, function_ref.func_idx))
• Err(RuntimeError::FunctionNotFound), or Err(RuntimeError::ModuleNotFound) if the function is not valid.

Implementation details

For an exported function (i.e. created by the same RuntimeInstance), the names are re-resolved using RuntimeInstance::get_indicies, and the indicies are compared with the indicies in the FunctionRef.

For a FunctionRef with the export flag set to false, the indicies are checked to be in-bounds, and that the module name matches the module name in the FunctionRef. The function name is ignored.

fn init_store(validation_info: &ValidationInfo<'_>) -> CustomResult<Store>