Struct VirtualMachinePrototype 

pub struct VirtualMachinePrototype { /* private fields */ }

Virtual machine ready to start executing a function.

Note: This struct implements Clone. Cloning a VirtualMachinePrototype allocates memory necessary for the clone to run.

Implementations

impl VirtualMachinePrototype

pub fn new(config: Config<'_>) -> Result<Self, NewErr>

Creates a new process state machine from the given module. This method notably allocates the memory necessary for the virtual machine to run.

See the module-level documentation for an explanation of the parameters.

pub fn global_value(&mut self, name: &str) -> Result<u32, GlobalValueErr>

Returns the value of a global that the module exports.

The global variable must be a i32, otherwise an error is returned. Negative values are silently reinterpreted as an unsigned integer.

pub fn memory_max_pages(&self) -> Option<HeapPages>

Returns the maximum number of pages that the memory can have.

None if there is no limit.

pub fn prepare(self) -> Prepare

Prepares the prototype for running a function.

This preliminary step is necessary as it allows reading and writing memory before starting the actual execution..

Trait Implementations

impl Clone for VirtualMachinePrototype

fn clone(&self) -> VirtualMachinePrototype

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for VirtualMachinePrototype

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

Formats the value using the given formatter.