Enum BuiltinClock 

#[repr(i32)]
pub enum BuiltinClock {
    Unknown = 0,
    Realtime = 1,
    RealtimeCoarse = 2,
    Monotonic = 3,
    MonotonicCoarse = 4,
    MonotonicRaw = 5,
    Boottime = 6,
    Tsc = 9,
    Perf = 10,
    TraceFile = 11,
    MaxId = 63,
}

Builtin clock domains used in Perfetto traces.

The default trace time clock is BUILTIN_CLOCK_TRACE_FILE: a synthetic clock representing the trace file’s own timeline. Each trace file gets its own instance (scoped by trace file index).

For backwards compatibility, Perfetto proto traces register BOOTTIME as a fallback: if the first timestamp conversion uses a clock other than the trace file clock and no explicit clock snapshot data exists, the trace time is switched to BOOTTIME. This fallback does not fire for modern traces that include ClockSnapshots or that only use the trace file clock directly.

The primary_trace_clock field in ClockSnapshot can definitively override the trace time clock regardless of the above.

Variants

Unknown = 0

Realtime = 1

Corresponds to CLOCK_REALTIME. See clock_gettime(2).

RealtimeCoarse = 2

Corresponds to CLOCK_REALTIME_COARSE. See clock_gettime(2).

Monotonic = 3

Corresponds to CLOCK_MONOTONIC. See clock_gettime(2).

MonotonicCoarse = 4

Corresponds to CLOCK_MONOTONIC_COARSE. See clock_gettime(2).

MonotonicRaw = 5

Corresponds to CLOCK_MONOTONIC_RAW. See clock_gettime(2).

Boottime = 6

Corresponds to CLOCK_BOOTTIME. See clock_gettime(2). For proto traces, this is used as a backwards-compatible fallback trace time clock when no explicit clock snapshots are present.

Tsc = 9

TSC (Time Stamp Counter). Architecture-specific high-resolution counter.

Perf = 10

Corresponds to the perf event clock (PERF_CLOCK).

TraceFile = 11

A synthetic clock representing the trace file’s own timeline. Each trace file gets its own instance (scoped by trace file index). This is the default trace time clock before any clock snapshot or format-specific override takes effect.

MaxId = 63

Implementations

impl BuiltinClock

pub fn is_valid(value: i32) -> bool

Returns true if value is a variant of BuiltinClock.

pub fn from_i32(value: i32) -> Option<BuiltinClock>

Converts an i32 to a BuiltinClock, or None if value is not a valid variant.

impl BuiltinClock

pub fn as_str_name(&self) -> &'static str

String value of the enum field names used in the ProtoBuf definition.

The values are not transformed in any way and thus are considered stable (if the ProtoBuf definition does not change) and safe for programmatic use.

Trait Implementations

impl Clone for BuiltinClock

fn clone(&self) -> BuiltinClock

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for BuiltinClock

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

Formats the value using the given formatter.

impl Default for BuiltinClock

fn default() -> BuiltinClock

Returns the “default value” for a type.

impl From<BuiltinClock> for i32

fn from(value: BuiltinClock) -> i32

Converts to this type from the input type.

impl Hash for BuiltinClock

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 BuiltinClock

fn cmp(&self, other: &BuiltinClock) -> 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 BuiltinClock

fn eq(&self, other: &BuiltinClock) -> 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 BuiltinClock

fn partial_cmp(&self, other: &BuiltinClock) -> 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 Copy for BuiltinClock

impl Eq for BuiltinClock

impl StructuralPartialEq for BuiltinClock