Struct wasmtime_runtime::OnDemandInstanceAllocator

pub struct OnDemandInstanceAllocator { /* private fields */ }

Represents the on-demand instance allocator.

Implementations

impl OnDemandInstanceAllocator

pub fn new( mem_creator: Option<Arc<dyn RuntimeMemoryCreator>>, stack_size: usize ) -> Self

Creates a new on-demand instance allocator.

Trait Implementations

impl Clone for OnDemandInstanceAllocator

fn clone(&self) -> OnDemandInstanceAllocator

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Default for OnDemandInstanceAllocator

fn default() -> Self

Returns the “default value” for a type.

impl InstanceAllocatorImpl for OnDemandInstanceAllocator

fn validate_module_impl( &self, _module: &Module, _offsets: &VMOffsets<HostPtr> ) -> Result<()>

Validate whether a module is allocatable by this instance allocator.

fn increment_component_instance_count(&self) -> Result<()>

Increment the count of concurrent component instances that are currently allocated, if applicable.

fn decrement_component_instance_count(&self)

The dual of increment_component_instance_count.

fn increment_core_instance_count(&self) -> Result<()>

Increment the count of concurrent core module instances that are currently allocated, if applicable.

fn decrement_core_instance_count(&self)

The dual of increment_core_instance_count.

unsafe fn allocate_memory( &self, request: &mut InstanceAllocationRequest<'_>, memory_plan: &MemoryPlan, memory_index: DefinedMemoryIndex ) -> Result<(MemoryAllocationIndex, Memory)>

Allocate a memory for an instance.

unsafe fn deallocate_memory( &self, _memory_index: DefinedMemoryIndex, allocation_index: MemoryAllocationIndex, _memory: Memory )

Deallocate an instance’s previously allocated memory.

unsafe fn allocate_table( &self, request: &mut InstanceAllocationRequest<'_>, table_plan: &TablePlan, _table_index: DefinedTableIndex ) -> Result<(TableAllocationIndex, Table)>

Allocate a table for an instance.

unsafe fn deallocate_table( &self, _table_index: DefinedTableIndex, allocation_index: TableAllocationIndex, _table: Table )

Deallocate an instance’s previously allocated table.

fn purge_module(&self, _: CompiledModuleId)

Purges all lingering resources related to module from within this allocator.

fn next_available_pkey(&self) -> Option<ProtectionKey>

Use the next available protection key.

fn restrict_to_pkey(&self, _: ProtectionKey)

Restrict access to memory regions protected by pkey.

fn allow_all_pkeys(&self)

Allow access to memory regions protected by any protection key.