Struct EventSet 

pub struct EventSet { /* private fields */ }

Tracks the status of a set of events that have the same provider, level, and keyword.

Implementations

impl EventSet

pub const fn new_unregistered() -> EventSet

Returns an inactive (unregistered) EventSet. The returned event set’s enabled() method will always return false, and any attempt to write to this event set will have no effect (safe no-op).

This method may be used to create a placeholder event set. Active (registered) event sets are created using Provider::register_set.

pub fn enabled(&self) -> bool

Returns true if any logging session is listening for events with the provider, level, and keyword associated with this event set.

pub fn errno(&self) -> i32

Returns 0 if this event set was successfully registered, or a nonzero error code if open("/sys/kernel/.../tracing/user_events_data") failed or ioctl(user_events_data, DIAG_IOCSREG, ...) returned an error.

Trait Implementations

impl Debug for EventSet

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

Formats the value using the given formatter.

impl Hash for EventSet

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

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 EventSet

fn cmp(&self, other: &Self) -> 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.

impl PartialEq for EventSet

fn eq(&self, other: &Self) -> 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 PartialOrd for EventSet

fn partial_cmp(&self, other: &Self) -> 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 Eq for EventSet