Struct InstanceMetricsSnapshot 

pub struct InstanceMetricsSnapshot {
    pub kernels_launched: u64,
    pub bytes_pinned: u64,
    pub back_pressure_rejections: u64,
    pub yield_count: u32,
    pub device_bytes_allocated: u64,
}

Aggregated, read-only view of a single instance’s wasi-cuda activity.

Produced by WasiCudaContext::metrics_snapshot / WasiCudaContext::metrics_snapshot_with_scheduler. Every field is a pure read of an existing atomic / counter, so collecting a snapshot is cheap and never mutates host state — it is safe to call from an operator-facing metrics endpoint on the hot path.

Counter semantics:

• kernels_launched and back_pressure_rejections are monotonically-increasing lifetime counters for the instance.
• bytes_pinned and device_bytes_allocated are current gauges (sum over live registry entries), so they fall when kernels / buffers are released.
• yield_count comes from the matching SchedulerContext; it is 0 when a snapshot is taken without one (the wasi-cuda context does not own the scheduler — they are sibling fields on the executor’s per-instance state).

Fields

kernels_launched: u64

Lifetime count of kernel launches that reached the dispatch path.

bytes_pinned: u64

Current aggregate retained PTX bytes across live kernels (the host-memory the registry has “pinned” for this instance).

back_pressure_rejections: u64

Lifetime count of launches refused by the back-pressure path (semaphore saturated or per-invocation deadline tripped).

yield_count: u32

Cumulative cooperative-yield() calls observed by the matching SchedulerContext, or 0 when the snapshot was taken without one.

device_bytes_allocated: u64

Current aggregate live device-buffer bytes allocated via the explicit alloc surface.

Trait Implementations

impl Clone for InstanceMetricsSnapshot

fn clone(&self) -> InstanceMetricsSnapshot

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for InstanceMetricsSnapshot

impl Debug for InstanceMetricsSnapshot

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

Formats the value using the given formatter.

impl Default for InstanceMetricsSnapshot

fn default() -> InstanceMetricsSnapshot

Returns the “default value” for a type.

impl Eq for InstanceMetricsSnapshot

impl PartialEq for InstanceMetricsSnapshot

fn eq(&self, other: &InstanceMetricsSnapshot) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for InstanceMetricsSnapshot