Struct MemoryRequest 

pub struct MemoryRequest<'a> { /* private fields */ }

Available on crate feature runtime only.

A request to a MemoryCreator::new_memory.

Implementations

impl<'a> MemoryRequest<'a>

pub fn ty(&self) -> MemoryType

The type of memory being created. Indicates both the minimum and maximum size, in wasm pages. The minimum and maximum sizes, in bytes, are also specified as minimum and maximum to avoid integer conversion if desired.

pub fn minimum(&self) -> usize

Minimum size of the memory in bytes. Same as the minimum of ty, but in bytes.

pub fn maximum(&self) -> Option<usize>

Limit on the maximum size of the memory in bytes, if any. Same as the maximum of ty, but in bytes.

pub fn reserved_size_in_bytes(&self) -> usize

Indicates the expected size of the reservation that is to be made for this memory. The implementation must reserve this many bytes for the memory’s allocation, plus the guard size at the end. Note that this reservation need only be a virtual memory reservation, physical memory does not need to be allocated immediately.

If this value is not zero, grow_to should never move the base pointer and the maximum size of ty is guaranteed to fit within reserved_size_in_bytes.

This value is tuned from the various Config methods about memory sizes/guards. It is guaranteed to be a multiple of the system page size.

pub fn guard_size_in_bytes(&self) -> usize

Indicates how many bytes of space after the memory allocation is expected to be unmapped. JIT code will elide bounds checks based on the guard_size_in_bytes provided, so for JIT code to work correctly the memory returned will need to be properly guarded with guard_size_in_bytes bytes left unmapped after the base allocation.

This value is tuned from the various Config methods about memory sizes/guards. It is guaranteed to be a multiple of the system page size.

pub fn kind(&self) -> MemoryKind

What kind of memory is requested.

Trait Implementations

impl Debug for MemoryRequest<'_>

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

Formats the value using the given formatter.