Struct WasmMmap 

struct WasmMmap {
    alloc: Mmap,
    size: Pages,
    vm_memory_definition: MaybeInstanceOwned<VMMemoryDefinition>,
}

Fields

alloc: Mmap

size: Pages

vm_memory_definition: MaybeInstanceOwned<VMMemoryDefinition>

The owned memory definition used by the generated code

Implementations

impl WasmMmap

fn get_vm_memory_definition(&self) -> NonNull<VMMemoryDefinition>

fn size(&self) -> Pages

fn grow( &mut self, delta: Pages, conf: VMMemoryConfig, ) -> Result<Pages, MemoryError>

fn grow_at_least( &mut self, min_size: u64, conf: VMMemoryConfig, ) -> Result<(), MemoryError>

Grows the memory to at least a minimum size. If the memory is already big enough for the min size then this function does nothing

fn reset(&mut self) -> Result<(), MemoryError>

Resets the memory down to a zero size

pub fn copy(&self) -> Result<Self, MemoryError>

Copies the memory (in this case it performs a copy-on-write to save memory)

Trait Implementations

impl Debug for WasmMmap

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

Formats the value using the given formatter.

impl Send for WasmMmap

SAFETY: Not safe by rust standards, since guest code may do weird things

with its memory. However, this is still safe to send across threads as far as the WASM spec is concerned.

impl Sync for WasmMmap

SAFETY: see above.