Struct wasmtime_runtime::PoolingInstanceAllocatorConfig

pub struct PoolingInstanceAllocatorConfig {
    pub max_unused_warm_slots: u32,
    pub stack_size: usize,
    pub limits: InstanceLimits,
    pub async_stack_zeroing: bool,
    pub async_stack_keep_resident: usize,
    pub linear_memory_keep_resident: usize,
    pub table_keep_resident: usize,
}

Configuration options for the pooling instance allocator supplied at construction.

Fields

max_unused_warm_slots: u32

See PoolingAllocatorConfig::max_unused_warm_slots in wasmtime

stack_size: usize

The size, in bytes, of async stacks to allocate (not including the guard page).

limits: InstanceLimits

The limits to apply to instances allocated within this allocator.

async_stack_zeroing: bool

Whether or not async stacks are zeroed after use.

async_stack_keep_resident: usize

If async stack zeroing is enabled and the host platform is Linux this is how much memory to zero out with memset.

The rest of memory will be zeroed out with madvise.

linear_memory_keep_resident: usize

How much linear memory, in bytes, to keep resident after resetting for use with the next instance. This much memory will be memset to zero when a linear memory is deallocated.

Memory exceeding this amount in the wasm linear memory will be released with madvise back to the kernel.

Only applicable on Linux.

table_keep_resident: usize

Same as linear_memory_keep_resident but for tables.

Trait Implementations

impl Clone for PoolingInstanceAllocatorConfig

fn clone(&self) -> PoolingInstanceAllocatorConfig

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for PoolingInstanceAllocatorConfig

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

Formats the value using the given formatter.

impl Default for PoolingInstanceAllocatorConfig

fn default() -> PoolingInstanceAllocatorConfig

Returns the “default value” for a type.

impl Copy for PoolingInstanceAllocatorConfig