Struct SharedMemory 

pub struct SharedMemory {
    memory: VMSharedMemory,
    ops: Option<Arc<dyn SharedMemoryOps + Send + Sync>>,
}

A shared memory instance that can be shared across multiple stores and threads, not attached to any specific store.

Fields

memory: VMSharedMemory

ops: Option<Arc<dyn SharedMemoryOps + Send + Sync>>

Implementations

impl SharedMemory

pub(crate) fn new(memory: VMSharedMemory) -> Self

Create a new shared memory.

pub(crate) fn new_with_ops( memory: VMSharedMemory, ops: Arc<dyn SharedMemoryOps + Send + Sync>, ) -> Self

Create a new shared memory with memory operations.

pub fn attach(self, store: &mut impl AsStoreMut) -> Memory

Attach this shared memory to the provided store.

pub fn ops(&self) -> MemoryOps

Create an operations handle that does not keep the underlying memory alive.

fn shared_ops( &self, ) -> Result<&(dyn SharedMemoryOps + Send + Sync), AtomicsError>

pub fn notify( &self, location: MemoryLocation, count: u32, ) -> Result<u32, AtomicsError>

Notify up to count waiters waiting for the memory location.

pub fn wait( &self, location: MemoryLocation, timeout: Option<Duration>, ) -> Result<u32, AtomicsError>

Wait for the memory location to be notified.

pub fn disable_atomics(&self) -> Result<(), AtomicsError>

Disable atomics for this memory.

All subsequent atomic wait calls will produce a trap.

This can be used or forced shutdown of instances that continuously try to wait on atomics.

NOTE: this operation might not be supported by all memory implementations. In that case, this function will return an error.

pub fn wake_all_atomic_waiters(&self) -> Result<(), AtomicsError>

Wake up all atomic waiters.

This can be used to force-resume waiting execution.

NOTE: this operation might not be supported by all memory implementations. In that case, this function will return an error.

Trait Implementations

impl Clone for SharedMemory

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SharedMemory

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

Formats the value using the given formatter.

impl From<SharedMemory> for MemoryOps

fn from(memory: SharedMemory) -> Self

Converts to this type from the input type.