Union wasmer_vm::VMFunctionEnvironment

pub union VMFunctionEnvironment {
    pub vmctx: *mut VMContext,
    pub host_env: *mut c_void,
}

Union representing the first parameter passed when calling a function.

It may either be a pointer to the VMContext if it’s a Wasm function or a pointer to arbitrary data controlled by the host if it’s a host function.

Fields

vmctx: *mut VMContext

Wasm functions take a pointer to VMContext.

host_env: *mut c_void

Host functions can have custom environments.

Implementations

impl VMFunctionEnvironment

pub fn is_null(&self) -> bool

Check whether the pointer stored is null or not.

Trait Implementations

impl Clone for VMFunctionEnvironment

fn clone(&self) -> VMFunctionEnvironment

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for VMFunctionEnvironment

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

Formats the value using the given formatter.

impl Hash for VMFunctionEnvironment

fn hash<H: Hasher>(&self, state: &mut H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H) where
    H: Hasher, 

Feeds a slice of this type into the given Hasher.

impl MemoryUsage for VMFunctionEnvironment

fn size_of_val(&self, _: &mut dyn MemoryUsageTracker) -> usize

Returns the size of the referenced value in bytes.

impl PartialEq<VMFunctionEnvironment> for VMFunctionEnvironment

fn eq(&self, rhs: &Self) -> 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 !=.

impl Copy for VMFunctionEnvironment

impl Eq for VMFunctionEnvironment