pub struct WasmtimeGuestMemory<'a> { /* private fields */ }
Expand description

Lightweight wasmtime::Memory wrapper so we can implement the wiggle::GuestMemory trait on it.

Implementations

Trait Implementations

Returns the base allocation of this guest memory, located in host memory. Read more

Indicates whether any outstanding borrows are known to the GuestMemory. This function must be false in order for it to be safe to recursively call into a WebAssembly module, or to manipulate the WebAssembly memory by any other means. Read more

Check if a region of linear memory has any shared borrows.

Check if a region of linear memory is exclusively borrowed. This is called during any GuestPtr::read or GuestPtr::write operation to ensure that wiggle is not reading or writing a region of memory which Rust believes it has exclusive access to. Read more

Shared borrow a region of linear memory. This is used when constructing a GuestSlice or GuestStr. Those types will give Rust & (shared reference) access to the region of linear memory. Read more

Exclusively borrow a region of linear memory. This is used when constructing a GuestSliceMut or GuestStrMut. Those types will give Rust &mut access to the region of linear memory, therefore, the GuestMemory impl must guarantee that at most one BorrowHandle is issued to a given region, GuestMemory::has_outstanding_borrows is true for the duration of the borrow, and that GuestMemory::is_mut_borrowed of any overlapping region is false for the duration of the borrow. Read more

Unborrow a previously borrowed shared region. As long as GuestSlice and GuestStr are implemented correctly, a shared BorrowHandle should only be unborrowed once. Read more

Unborrow a previously borrowed mutable region. As long as GuestSliceMut and GuestStrMut are implemented correctly, a mut BorrowHandle should only be unborrowed once. Read more

Validates a guest-relative pointer given various attributes, and returns the corresponding host pointer. Read more

Convenience method for creating a GuestPtr at a particular offset. Read more

Auto Trait Implementations

Blanket Implementations

Gets the TypeId of self. Read more

Immutably borrows from an owned value. Read more

Mutably borrows from an owned value. Read more

Returns the argument unchanged.

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more

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Calls U::from(self).

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

The alignment of pointer.

The type for initializers.

Initializes a with the given initializer. Read more

Dereferences the given pointer. Read more

Mutably dereferences the given pointer. Read more

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

Should always be Self

The type returned in the event of a conversion error.

Performs the conversion.

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Performs the conversion.

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