Enum wasmtime_environ::MemoryStyle

pub enum MemoryStyle {
    Dynamic {
        reserve: u64,
    },
    Static {
        bound: u64,
    },
}

Implementation styles for WebAssembly linear memory.

Variants

Dynamic

Fields

reserve: u64

Extra space to reserve when a memory must be moved due to growth.

The actual memory can be resized and moved.

Static

Fields

bound: u64

The number of mapped and unmapped pages.

Address space is allocated up front.

Implementations

impl MemoryStyle

pub fn for_memory(memory: Memory, tunables: &Tunables) -> (Self, u64)

Decide on an implementation style for the given Memory.

Examples found in repository

src/module.rs (line 88)

    pub fn for_memory(memory: Memory, tunables: &Tunables) -> Self {
        let (style, offset_guard_size) = MemoryStyle::for_memory(memory, tunables);
        Self {
            memory,
            style,
            offset_guard_size,
            pre_guard_size: if tunables.guard_before_linear_memory {
                offset_guard_size
            } else {
                0
            },
        }
    }

Trait Implementations

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for MemoryStyle

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>where
    __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Hash for MemoryStyle

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,
    Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Serialize for MemoryStyle

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>where
    __S: Serializer,

Serialize this value into the given Serde serializer.