Enum KernelSignal 

#[non_exhaustive]
pub enum KernelSignal {
    Shutdown,
    Suspend,
    Resume,
    Ping,
    Pong,
    ReloadConfig,
    DumpState,
    UserDefined(u8),
    Kill,
    LinkExit {
        pid: Pid,
        reason: ExitReason,
    },
    MonitorDown(ProcessDown),
    ResourceWarning {
        resource: String,
        current: u64,
        limit: u64,
    },
}

Kernel control signals.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Shutdown

Request a process to shut down gracefully.

Suspend

Request a process to suspend.

Resume

Request a process to resume from suspension.

Ping

Heartbeat / keep-alive ping.

Pong

Response to a heartbeat ping.

ReloadConfig

Reload configuration (K2-G5).

DumpState

Dump internal state for debugging (K2-G5).

UserDefined(u8)

User-defined signal with a discriminant (K2-G5).

Kill

Immediate kill – no cleanup, no graceful shutdown (K2-G5).

LinkExit

Crash notification from a linked process (K1-G2).

Fields

pid: Pid

PID of the linked process that exited.

reason: ExitReason

Reason the process exited.

MonitorDown(ProcessDown)

Monitor DOWN notification (K1-G2).

ResourceWarning

Resource usage warning at 80% of limit (K1-G3).

Fields

resource: String

Name of the resource (e.g. “memory”, “cpu_time”).

current: u64

Current usage value.

limit: u64

Configured limit.

Trait Implementations

impl Clone for KernelSignal

fn clone(&self) -> KernelSignal

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for KernelSignal

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for KernelSignal

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for KernelSignal

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.