Struct GenericKernelTaskStateEvent

pub struct GenericKernelTaskStateEvent {
    pub cpu: Option<i32>,
    pub comm: Option<String>,
    pub tid: Option<i64>,
    pub state: Option<i32>,
    pub prio: Option<i32>,
}

GenericKernelTaskStateEvent is the standard proto to capture thread state change events in a generic kernel implementation. This is mainly for the case where scheduler events are not directly supported in the kernel’s tracing mechanism.

By capturing these task state events Perfetto is able to infer higher-level events such as context switches and task waking events, providing as much parity as possible with established tracing frameworks such as Linux’s ftrace.

Fields

cpu: Option<i32>

CPU in which the event occurred. This field is only relevant with the TASK_STATE_RUNNING state. There is no specific meaning to the cpu field in a non-running state event.

comm: Option<String>

Command name for the thread.

tid: Option<i64>

Thread id.

state: Option<i32>

New state of the thread.

prio: Option<i32>

Priority of the thread. This value is OS agnostic and should only be interpreted based on the kernel who emitted the message.

Implementations

impl GenericKernelTaskStateEvent

pub fn cpu(&self) -> i32

Returns the value of cpu, or the default value if cpu is unset.

pub fn comm(&self) -> &str

Returns the value of comm, or the default value if comm is unset.

pub fn tid(&self) -> i64

Returns the value of tid, or the default value if tid is unset.

pub fn state(&self) -> TaskStateEnum

Returns the enum value of state, or the default if the field is unset or set to an invalid enum value.

pub fn set_state(&mut self, value: TaskStateEnum)

Sets state to the provided enum value.

pub fn prio(&self) -> i32

Returns the value of prio, or the default value if prio is unset.

Trait Implementations

impl Clone for GenericKernelTaskStateEvent

fn clone(&self) -> GenericKernelTaskStateEvent

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for GenericKernelTaskStateEvent

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

Formats the value using the given formatter.

impl Default for GenericKernelTaskStateEvent

fn default() -> Self

Returns the “default value” for a type.

impl Message for GenericKernelTaskStateEvent

fn encoded_len(&self) -> usize

Returns the encoded length of the message without a length delimiter.

fn clear(&mut self)

Clears the message, resetting all fields to their default.

fn encode<B>(&self, buf: &mut B) -> Result<(), EncodeError>

where B: BufMut, Self: Sized,

Encodes the message to a buffer.

fn encode_to_vec(&self) -> Vec<u8>

where Self: Sized,

Encodes the message to a newly allocated buffer.

fn encode_length_delimited<B>(&self, buf: &mut B) -> Result<(), EncodeError>

where B: BufMut, Self: Sized,

Encodes the message with a length-delimiter to a buffer.

fn encode_length_delimited_to_vec(&self) -> Vec<u8>

where Self: Sized,

Encodes the message with a length-delimiter to a newly allocated buffer.

fn decode<B>(buf: B) -> Result<Self, DecodeError>

where B: Buf, Self: Default,

Decodes an instance of the message from a buffer.

fn decode_length_delimited<B>(buf: B) -> Result<Self, DecodeError>

where B: Buf, Self: Default,

Decodes a length-delimited instance of the message from the buffer.

fn merge<B>(&mut self, buf: B) -> Result<(), DecodeError>

where B: Buf, Self: Sized,

Decodes an instance of the message from a buffer, and merges it into self.

fn merge_length_delimited<B>(&mut self, buf: B) -> Result<(), DecodeError>

where B: Buf, Self: Sized,

Decodes a length-delimited instance of the message from buffer, and merges it into self.

impl PartialEq for GenericKernelTaskStateEvent

fn eq(&self, other: &GenericKernelTaskStateEvent) -> 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 StructuralPartialEq for GenericKernelTaskStateEvent