Struct WasmThreadCapabilities 

pub struct WasmThreadCapabilities {
    pub cross_origin_isolated: bool,
    pub shared_array_buffer: bool,
    pub atomics: bool,
    pub hardware_concurrency: u32,
    pub coop_header: Option<String>,
    pub coep_header: Option<String>,
    pub is_secure_context: bool,
    pub errors: Vec<String>,
}

WASM threading capabilities detected from browser context

Fields

cross_origin_isolated: bool

Whether crossOriginIsolated is true in the browser

shared_array_buffer: bool

Whether SharedArrayBuffer is available

atomics: bool

Whether Atomics is available

hardware_concurrency: u32

navigator.hardwareConcurrency value

coop_header: Option<String>

COOP header value (if present)

coep_header: Option<String>

COEP header value (if present)

is_secure_context: bool

Whether the page is served over HTTPS (required for SAB)

errors: Vec<String>

Error messages collected during detection

Implementations

impl WasmThreadCapabilities

pub fn full_support() -> Self

Create capabilities indicating full threading support

pub fn no_support() -> Self

Create capabilities indicating no threading support

pub fn assert_threading_ready(&self) -> Result<(), CapabilityError>

Assert all requirements for multi-threaded WASM

Errors

Returns error with detailed message if any requirement is not met

pub fn assert_streaming_ready(&self) -> Result<(), CapabilityError>

Assert requirements for streaming audio processing

Streaming requires threading for real-time performance

Errors

Returns error if streaming requirements are not met

pub fn optimal_threads(&self) -> u32

Get recommended thread count for optimal performance

Per whisper.apr: N_threads = max(1, min(hardwareConcurrency - 1, 8))

pub fn is_threading_available(&self) -> bool

Check if threading is available (non-asserting)

pub fn shared_array_buffer_status(&self) -> CapabilityStatus

Check SharedArrayBuffer status

pub fn detection_js() -> &'static str

Generate JavaScript code to detect capabilities in browser

pub fn from_json(json: &str) -> Result<Self, CapabilityError>

Parse capabilities from JSON response

Errors

Returns error if JSON parsing fails

Trait Implementations

impl Clone for WasmThreadCapabilities

fn clone(&self) -> WasmThreadCapabilities

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for WasmThreadCapabilities

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

Formats the value using the given formatter.

impl Default for WasmThreadCapabilities

fn default() -> WasmThreadCapabilities

Returns the “default value” for a type.