Struct SubscribeMetricsRequest 

#[repr(C)]
pub struct SubscribeMetricsRequest {
    pub actor_id: u64,
    pub interval_us: u64,
    pub subscription_id: u64,
}

H2K command: subscribe to metrics from a GPU actor.

Encoded into the H2K message payload on the CUDA backend. interval_us of 0 is interpreted as an unsubscribe request.

Wire Layout

The type is #[repr(C)] and Pod-like (no padding-sensitive fields) so it maps 1:1 to the GPU-side C struct of the same name.

Fields

actor_id: u64

Target actor (thread-block index on GPU).

interval_us: u64

Emission interval in microseconds; 0 = unsubscribe.

subscription_id: u64

Caller-generated subscription ID (echoed back in events).

Implementations

impl SubscribeMetricsRequest

pub const WIRE_SIZE: usize

Size of the wire representation in bytes.

pub const fn new(actor_id: u64, interval_us: u64, subscription_id: u64) -> Self

Construct a new subscribe request.

pub const fn unsubscribe(actor_id: u64, subscription_id: u64) -> Self

Construct an unsubscribe request (interval = 0).

pub const fn is_unsubscribe(&self) -> bool

Return true if this message is an unsubscribe request.

pub fn to_bytes(&self) -> [u8; 24]

Serialize to a fixed-size byte array.

pub fn from_bytes(bytes: &[u8]) -> Option<Self>

Deserialize from a byte slice. Returns None if the slice is too short.

Trait Implementations

impl Clone for SubscribeMetricsRequest

fn clone(&self) -> SubscribeMetricsRequest

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SubscribeMetricsRequest

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

Formats the value using the given formatter.

impl PartialEq for SubscribeMetricsRequest

fn eq(&self, other: &SubscribeMetricsRequest) -> 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 Copy for SubscribeMetricsRequest

impl Eq for SubscribeMetricsRequest

impl StructuralPartialEq for SubscribeMetricsRequest