Struct wasmer_vm::VMGlobalDefinition

#[repr(C, align(16))]
pub struct VMGlobalDefinition { /* fields omitted */ }

The storage for a WebAssembly global defined within the instance.

TODO: Pack the globals more densely, rather than using the same size for every type.

Implementations

impl VMGlobalDefinition

pub fn new() -> Self

Construct a VMGlobalDefinition.

pub fn to_i32(&self) -> i32

Return the value as an i32.

If this is not an I32 typed global it is unspecified what value is returned.

pub unsafe fn as_i32_mut(&mut self) -> &mut i32

Return a mutable reference to the value as an i32.

Safety

It is the callers responsibility to make sure the global has I32 type. Until the returned borrow is dropped, reads and writes of this global must be done exclusively through this borrow. That includes reads and writes of globals inside wasm functions.

pub fn to_u32(&self) -> u32

Return a reference to the value as an u32.

If this is not an I32 typed global it is unspecified what value is returned.

pub unsafe fn as_u32_mut(&mut self) -> &mut u32

Return a mutable reference to the value as an u32.

Safety

It is the callers responsibility to make sure the global has I32 type. Until the returned borrow is dropped, reads and writes of this global must be done exclusively through this borrow. That includes reads and writes of globals inside wasm functions.

pub fn to_i64(&self) -> i64

Return a reference to the value as an i64.

If this is not an I64 typed global it is unspecified what value is returned.

pub unsafe fn as_i64_mut(&mut self) -> &mut i64

Return a mutable reference to the value as an i64.

Safety

It is the callers responsibility to make sure the global has I32 type. Until the returned borrow is dropped, reads and writes of this global must be done exclusively through this borrow. That includes reads and writes of globals inside wasm functions.

pub fn to_u64(&self) -> u64

Return a reference to the value as an u64.

If this is not an I64 typed global it is unspecified what value is returned.

pub unsafe fn as_u64_mut(&mut self) -> &mut u64

Return a mutable reference to the value as an u64.

Safety

It is the callers responsibility to make sure the global has I64 type. Until the returned borrow is dropped, reads and writes of this global must be done exclusively through this borrow. That includes reads and writes of globals inside wasm functions.

pub fn to_f32(&self) -> f32

Return a reference to the value as an f32.

If this is not an F32 typed global it is unspecified what value is returned.

pub unsafe fn as_f32_mut(&mut self) -> &mut f32

Return a mutable reference to the value as an f32.

Safety

It is the callers responsibility to make sure the global has F32 type. Until the returned borrow is dropped, reads and writes of this global must be done exclusively through this borrow. That includes reads and writes of globals inside wasm functions.

pub fn to_f64(&self) -> f64

Return a reference to the value as an f64.

If this is not an F64 typed global it is unspecified what value is returned.

pub unsafe fn as_f64_mut(&mut self) -> &mut f64

Return a mutable reference to the value as an f64.

Safety

It is the callers responsibility to make sure the global has F64 type. Until the returned borrow is dropped, reads and writes of this global must be done exclusively through this borrow. That includes reads and writes of globals inside wasm functions.

pub fn to_funcref(&self) -> VMFuncRef

Return a reference to the value as a VMFuncRef.

If this is not a VMFuncRef typed global it is unspecified what value is returned.

pub unsafe fn as_funcref_mut(&mut self) -> &mut VMFuncRef

Return a mutable reference to the value as a VMFuncRef.

Safety

It is the callers responsibility to make sure the global has VMFuncRef type. Until the returned borrow is dropped, reads and writes of this global must be done exclusively through this borrow. That includes reads and writes of globals inside wasm functions.

pub unsafe fn as_externref_mut(&mut self) -> &mut VMExternRef

Return a mutable reference to the value as an VMExternRef.

Safety

It is the callers responsibility to make sure the global has I32 type. Until the returned borrow is dropped, reads and writes of this global must be done exclusively through this borrow. That includes reads and writes of globals inside wasm functions.

pub fn to_externref(&self) -> VMExternRef

Return a reference to the value as an VMExternRef.

If this is not an I64 typed global it is unspecified what value is returned.

pub fn to_u128(&self) -> u128

Return a reference to the value as an u128.

If this is not an V128 typed global it is unspecified what value is returned.

pub unsafe fn as_u128_mut(&mut self) -> &mut u128

Return a mutable reference to the value as an u128.

Safety

It is the callers responsibility to make sure the global has V128 type. Until the returned borrow is dropped, reads and writes of this global must be done exclusively through this borrow. That includes reads and writes of globals inside wasm functions.

pub fn to_bytes(&self) -> [u8; 16]

Return a reference to the value as bytes.

pub unsafe fn as_bytes_mut(&mut self) -> &mut [u8; 16]

Return a mutable reference to the value as bytes.

Safety

Until the returned borrow is dropped, reads and writes of this global must be done exclusively through this borrow. That includes reads and writes of globals inside wasm functions.

Trait Implementations

impl Clone for VMGlobalDefinition

fn clone(&self) -> VMGlobalDefinition

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for VMGlobalDefinition

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

Formats the value using the given formatter.

impl MemoryUsage for VMGlobalDefinition

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

Returns the size of the referenced value in bytes.