Struct Opcode 

pub struct Opcode(/* private fields */);

Values for EventHeader::opcode indicating special semantics to be used by the event decoder for grouping and organizing events, e.g. for activities.

Most events set opcode = Info (0). Other opcode values add special semantics to an event that help the event analysis tool with grouping related events. The most frequently-used special semantics are ActivityStart and ActivityStop.

To record an activity:

• Generate a new activity id. An activity id is a 128-bit value that must be unique within the trace. This can be a UUID or it can be generated by any other id-generation system that is unlikely to create the same value for any other activity id in the same trace.
• Write an event with opcode = ActivityStart, with the activity id specified, and if the activity is nesting within a parent activity, the related id specified as the id of the parent activity.
• As appropriate, write any number of normal events (events with opcode set to something other than ActivityStart or ActivityStop, e.g. opcode = Info). To indicate that the events are part of the activity, each of these events should have their activity id specified as the id of the activity.
• When the activity ends, write an event with opcode = ActivityStop, with the activity id specified.

Implementations

impl Opcode

pub const Info: Opcode

Normal event. The event may set activity_id if it is part of an activity.

pub const ActivityStart: Opcode

Event indicates the beginning of an activity. The event should set related_id to the id of the parent activity and should set activity_id to the id of the newly-started activity. All subsequent events that use the new activity_id will be considered as part of this activity, up to the corresponding ActivityStop event.

pub const ActivityStop: Opcode

Event indicates the end of an activity. The event should set activity_id to the id of the activity that is ending and should use the same level and keyword as were used for the corresponding ActivityStart event.

pub const CollectionStart: Opcode

Data Collection Start event

pub const CollectionStop: Opcode

Data Collection Stop event

pub const Extension: Opcode

Extension event

pub const Reply: Opcode

Reply event

pub const Resume: Opcode

Resume event

pub const Suspend: Opcode

Suspend event

pub const Send: Opcode

Message Send event

pub const Receive: Opcode

Message Receive event

pub const ReservedOpcode241: Opcode

Reserved for future definition by Microsoft

pub const ReservedOpcode242: Opcode

Reserved for future definition by Microsoft

pub const ReservedOpcode243: Opcode

Reserved for future definition by Microsoft

pub const ReservedOpcode244: Opcode

Reserved for future definition by Microsoft

pub const ReservedOpcode245: Opcode

Reserved for future definition by Microsoft

pub const ReservedOpcode246: Opcode

Reserved for future definition by Microsoft

pub const ReservedOpcode247: Opcode

Reserved for future definition by Microsoft

pub const ReservedOpcode248: Opcode

Reserved for future definition by Microsoft

pub const ReservedOpcode249: Opcode

Reserved for future definition by Microsoft

pub const ReservedOpcode250: Opcode

Reserved for future definition by Microsoft

pub const ReservedOpcode251: Opcode

Reserved for future definition by Microsoft

pub const ReservedOpcode252: Opcode

Reserved for future definition by Microsoft

pub const ReservedOpcode253: Opcode

Reserved for future definition by Microsoft

pub const ReservedOpcode254: Opcode

Reserved for future definition by Microsoft

pub const ReservedOpcode255: Opcode

Reserved for future definition by Microsoft

pub const fn from_int(value: u8) -> Opcode

Returns an opcode with the specified value.

pub const fn as_int(self) -> u8

Returns the integer value of this opcode.

Trait Implementations

impl Clone for Opcode

fn clone(&self) -> Opcode

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Opcode

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

Formats the value using the given formatter.

impl Default for Opcode

fn default() -> Opcode

Returns the “default value” for a type.

impl Display for Opcode

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

Formats the value using the given formatter.

impl From<Opcode> for u8

fn from(val: Opcode) -> Self

Converts to this type from the input type.

impl From<u8> for Opcode

fn from(val: u8) -> Self

Converts to this type from the input type.

impl Hash for Opcode

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 Opcode

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

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

fn partial_cmp(&self, other: &Opcode) -> 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 Opcode

impl Eq for Opcode

impl StructuralPartialEq for Opcode