Enum ThreadPriority 

pub enum ThreadPriority {
    Low,
    CaServerLow,
    CaServerHigh,
    Medium,
    ScanLow,
    ScanHigh,
    High,
    Iocsh,
    Custom(u8),
}

EPICS thread priority — an integer 0..=99 with the named levels from epicsThreadPriority* (epicsThread.h:73-83). Lower values are lower priority; the CA server bands sit below the scan bands so scan threads preempt CA-server threads on a loaded IOC.

Variants

Low

epicsThreadPriorityLow = 10.

CaServerLow

epicsThreadPriorityCAServerLow = 20.

CaServerHigh

epicsThreadPriorityCAServerHigh = 40.

Medium

epicsThreadPriorityMedium = 50.

ScanLow

epicsThreadPriorityScanLow = 60.

ScanHigh

epicsThreadPriorityScanHigh = 70.

High

epicsThreadPriorityHigh = 90.

Iocsh

epicsThreadPriorityIocsh = 91.

Custom(u8)

An explicit priority value, clamped to 0..=99 on use.

Implementations

impl ThreadPriority

pub const fn value(self) -> u8

The raw EPICS priority value 0..=99, matching the epicsThreadPriority* constants in epicsThread.h.

const so a server can derive its band from the named one C derives it from — CaServerLow - 2 rather than a bare 18 with a comment asserting the two are the same number. C builds exactly that ladder at caservertask.c:563-575; restating its output as a literal is how the ladder and its constants come to disagree.

Trait Implementations

impl Clone for ThreadPriority

fn clone(&self) -> ThreadPriority

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for ThreadPriority

impl Debug for ThreadPriority

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

Formats the value using the given formatter.

impl Eq for ThreadPriority

impl Hash for ThreadPriority

fn hash<__H>(&self, state: &mut __H)

where __H: Hasher,

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for ThreadPriority

fn cmp(&self, other: &ThreadPriority) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

fn clamp_to<R>(self, range: R) -> Self

where Self: Sized, R: ClampBounds<Self>,

🔬This is a nightly-only experimental API. (clamp_to)

Restrict a value to a certain range.

impl PartialEq for ThreadPriority

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

Equality operator ==.

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

Inequality operator !=.

impl PartialOrd for ThreadPriority

fn partial_cmp(&self, other: &ThreadPriority) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl StructuralPartialEq for ThreadPriority