Enum wasmer_vm::MemoryStyle

#[repr(u8)]
pub enum MemoryStyle {
    Dynamic {
        offset_guard_size: u64,
    },
    Static {
        bound: Pages,
        offset_guard_size: u64,
    },
}

Implementation styles for WebAssembly linear memory.

Variants

Dynamic

Fields

offset_guard_size: u64

Our chosen offset-guard size.

It represents the size in bytes of extra guard pages after the end to optimize loads and stores with constant offsets.

The actual memory can be resized and moved.

Static

Fields

bound: Pages

The number of mapped and unmapped pages.

offset_guard_size: u64

Our chosen offset-guard size.

It represents the size in bytes of extra guard pages after the end to optimize loads and stores with constant offsets.

Address space is allocated up front.

Implementations

impl MemoryStyle

pub fn offset_guard_size(&self) -> u64

Returns the offset-guard size

Trait Implementations

impl Archive for MemoryStylewhere u64: Archive, Pages: Archive,

type Archived = MemoryStyle

The archived representation of this type.

type Resolver = MemoryStyleResolver

The resolver for this type. It must contain all the additional information from serializing needed to make the archived type from the normal type.

unsafe fn resolve( &self, pos: usize, resolver: <MemoryStyle as Archive>::Resolver, out: *mut <MemoryStyle as Archive>::Archived )

Creates the archived version of this value at the given position and writes it to the given output.

impl<__C> CheckBytes<__C> for MemoryStylewhere u64: CheckBytes<__C>, Pages: CheckBytes<__C>, __C: ?Sized,

type Error = EnumCheckError<u8>

The error that may result from checking the type.

unsafe fn check_bytes<'__bytecheck>( value: *const MemoryStyle, context: &mut __C ) -> Result<&'__bytecheck MemoryStyle, EnumCheckError<u8>>

Checks whether the given pointer points to a valid value within the given context.

impl Clone for MemoryStyle

fn clone(&self) -> MemoryStyle

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for MemoryStyle

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

Formats the value using the given formatter.

impl<__D> Deserialize<MemoryStyle, __D> for <MemoryStyle as Archive>::Archivedwhere __D: Fallible + ?Sized, u64: Archive, <u64 as Archive>::Archived: Deserialize<u64, __D>, Pages: Archive, <Pages as Archive>::Archived: Deserialize<Pages, __D>,

fn deserialize( &self, deserializer: &mut __D ) -> Result<MemoryStyle, <__D as Fallible>::Error>

Deserializes using the given deserializer

impl Hash for MemoryStyle

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

Feeds this value into the given Hasher.

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

Feeds a slice of this type into the given Hasher.

impl PartialEq<MemoryStyle> for MemoryStyle

fn eq(&self, other: &MemoryStyle) -> 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 !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<__S> Serialize<__S> for MemoryStylewhere __S: Fallible + ?Sized, u64: Serialize<__S>, Pages: Serialize<__S>,

fn serialize( &self, serializer: &mut __S ) -> Result<<MemoryStyle as Archive>::Resolver, <__S as Fallible>::Error>

Writes the dependencies for the object and returns a resolver that can create the archived type.

impl Copy for MemoryStyle

impl Eq for MemoryStyle

impl StructuralEq for MemoryStyle

impl StructuralPartialEq for MemoryStyle