Struct wasmtime::MemoryType

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pub struct MemoryType { /* private fields */ }

Expand description

A descriptor for a WebAssembly memory type.

Memories are described in units of pages (64KB) and represent contiguous chunks of addressable memory.

Implementations

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impl MemoryType

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pub fn new(minimum: u32, maximum: Option<u32>) -> MemoryType

Creates a new descriptor for a 32-bit WebAssembly memory given the specified limits of the memory.

The minimum and maximum values here are specified in units of WebAssembly pages, which are 64k.

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pub fn new64(minimum: u64, maximum: Option<u64>) -> MemoryType

Creates a new descriptor for a 64-bit WebAssembly memory given the specified limits of the memory.

The minimum and maximum values here are specified in units of WebAssembly pages, which are 64k.

Note that 64-bit memories are part of the memory64 proposal for WebAssembly which is not standardized yet.

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pub fn shared(minimum: u32, maximum: u32) -> MemoryType

Creates a new descriptor for shared WebAssembly memory given the specified limits of the memory.

The minimum and maximum values here are specified in units of WebAssembly pages, which are 64k.

Note that shared memories are part of the threads proposal for WebAssembly which is not standardized yet.

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pub fn is_64(&self) -> bool

Returns whether this is a 64-bit memory or not.

Note that 64-bit memories are part of the memory64 proposal for WebAssembly which is not standardized yet.

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pub fn is_shared(&self) -> bool

Returns whether this is a shared memory or not.

Note that shared memories are part of the threads proposal for WebAssembly which is not standardized yet.

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pub fn minimum(&self) -> u64

Returns minimum number of WebAssembly pages this memory must have.

Note that the return value, while a u64, will always fit into a u32 for 32-bit memories.

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pub fn maximum(&self) -> Option<u64>

Returns the optionally-specified maximum number of pages this memory can have.

If this returns None then the memory is not limited in size.

Note that the return value, while a u64, will always fit into a u32 for 32-bit memories.

Trait Implementations

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impl Clone for MemoryType

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fn clone(&self) -> MemoryType

Returns a copy of the value. Read more

1.0.0 · source

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

Performs copy-assignment from source. Read more

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impl Debug for MemoryType

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

Formats the value using the given formatter. Read more

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impl From<MemoryType> for ExternType

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fn from(ty: MemoryType) -> ExternType

Performs the conversion.

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impl Hash for MemoryType

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

Feeds this value into the given Hasher. Read more

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

Feeds a slice of this type into the given Hasher. Read more

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impl PartialEq<MemoryType> for MemoryType

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fn eq(&self, other: &MemoryType) -> bool

This method tests for self and other values to be equal, and is used by ==. Read more

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fn ne(&self, other: &MemoryType) -> bool

This method tests for !=.

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impl Eq for MemoryType

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impl StructuralEq for MemoryType

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impl StructuralPartialEq for MemoryType

Auto Trait Implementations

impl RefUnwindSafe for MemoryType

impl Send for MemoryType

impl Sync for MemoryType

impl Unpin for MemoryType

impl UnwindSafe for MemoryType

Blanket Implementations

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impl<T> Any for T where
T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

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impl<T> Borrow<T> for T where
T: ?Sized,

const: unstable · source

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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impl<T> BorrowMut<T> for T where
T: ?Sized,

const: unstable · source

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

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impl<Q, K> Equivalent<K> for Q where
Q: Eq + ?Sized,
K: Borrow<Q> + ?Sized,

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fn equivalent(&self, key: &K) -> bool

Compare self to key and return true if they are equal.

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impl<T> From<T> for T

const: unstable · source

fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into for T where
U: From<T>,

const: unstable · source

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> Pointable for T

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const ALIGN: usize

The alignment of pointer.

type Init = T

The type for initializers.

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unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more

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unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more

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unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more

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unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more

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impl<T> Same<T> for T

type Output = T

Should always be Self

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impl<T> ToOwned for T where
T: Clone,

type Owned = T

The resulting type after obtaining ownership.

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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more

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fn clone_into(&self, target: &mut T)

🔬 This is a nightly-only experimental API. (toowned_clone_into)

Uses borrowed data to replace owned data, usually by cloning. Read more

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impl<T, U> TryFrom for T where
U: Into<T>,

type Error = Infallible

The type returned in the event of a conversion error.

const: unstable · source

fn try_from(value: U) -> Result<T, <T as TryFrom>::Error>

Performs the conversion.

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impl<T, U> TryInto for T where
U: TryFrom<T>,

type Error = >::Error

The type returned in the event of a conversion error.

const: unstable · source

fn try_into(self) -> Result<U, >::Error>

Performs the conversion.

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impl<V, T> VZip<V> for T where
V: MultiLane<T>,

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Struct wasmtime::MemoryType

Implementations

impl MemoryType

pub fn new(minimum: u32, maximum: Option<u32>) -> MemoryType

pub fn new64(minimum: u64, maximum: Option<u64>) -> MemoryType

pub fn shared(minimum: u32, maximum: u32) -> MemoryType

pub fn is_64(&self) -> bool

pub fn is_shared(&self) -> bool

pub fn minimum(&self) -> u64

pub fn maximum(&self) -> Option<u64>

Trait Implementations

impl Clone for MemoryType

fn clone(&self) -> MemoryType

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

impl Debug for MemoryType

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

impl From<MemoryType> for ExternType

fn from(ty: MemoryType) -> ExternType

impl Hash for MemoryType

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

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

impl PartialEq<MemoryType> for MemoryType

fn eq(&self, other: &MemoryType) -> bool

fn ne(&self, other: &MemoryType) -> bool

impl Eq for MemoryType

impl StructuralEq for MemoryType

impl StructuralPartialEq for MemoryType

Auto Trait Implementations

impl RefUnwindSafe for MemoryType

impl Send for MemoryType

impl Sync for MemoryType

impl Unpin for MemoryType

impl UnwindSafe for MemoryType

Blanket Implementations

impl<T> Any for T where T: 'static + ?Sized,

fn type_id(&self) -> TypeId

impl<T> Borrow<T> for T where T: ?Sized,

fn borrow(&self) -> &T

impl<T> BorrowMut<T> for T where T: ?Sized,

fn borrow_mut(&mut self) -> &mut T

impl<Q, K> Equivalent<K> for Q where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

fn equivalent(&self, key: &K) -> bool

impl<T> From<T> for T

fn from(t: T) -> T

impl<T, U> Into<U> for T where U: From<T>,

fn into(self) -> U

impl<T> Pointable for T

const ALIGN: usize

type Init = T

unsafe fn init(init: <T as Pointable>::Init) -> usize

unsafe fn deref<'a>(ptr: usize) -> &'a T

unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

unsafe fn drop(ptr: usize)

impl<T> Same<T> for T

type Output = T

impl<T> ToOwned for T where T: Clone,

type Owned = T

fn to_owned(&self) -> T

fn clone_into(&self, target: &mut T)

impl<T, U> TryFrom<U> for T where U: Into<T>,

type Error = Infallible

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

impl<T, U> TryInto<U> for T where U: TryFrom<T>,

type Error = <U as TryFrom<T>>::Error

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

impl<V, T> VZip<V> for T where V: MultiLane<T>,

fn vzip(self) -> V

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

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

impl<T> Any for T where
T: 'static + ?Sized,

impl<T> Borrow<T> for T where
T: ?Sized,

impl<T> BorrowMut<T> for T where
T: ?Sized,

impl<Q, K> Equivalent<K> for Q where
Q: Eq + ?Sized,
K: Borrow<Q> + ?Sized,

impl<T, U> Into<U> for T where
U: From<T>,

impl<T> ToOwned for T where
T: Clone,

impl<T, U> TryFrom<U> for T where
U: Into<T>,

impl<T, U> TryInto<U> for T where
U: TryFrom<T>,

impl<V, T> VZip<V> for T where
V: MultiLane<T>,