trace

type Event struct {
	Off  int  // offset in input file (for debugging and error reporting)
	Type byte // one of Ev*

	Ts    int64     // timestamp in nanoseconds
	P     int       // P on which the event happened (can be one of TimerP, NetpollP, SyscallP)
	G     uint64    // G on which the event happened
	StkID uint64    // unique stack ID
	Stk   []*Frame  // stack trace (can be empty)
	Args  [3]uint64 // event-type-specific arguments
	SArgs []string  // event-type-specific string args
	// linked event (can be nil), depends on event type:
	// for GCStart: the GCStop
	// for GCSTWStart: the GCSTWDone
	// for GCSweepStart: the GCSweepDone
	// for GoCreate: first GoStart of the created goroutine
	// for GoStart/GoStartLabel: the associated GoEnd, GoBlock or other blocking event
	// for GoSched/GoPreempt: the next GoStart
	// for GoBlock and other blocking events: the unblock event
	// for GoUnblock: the associated GoStart
	// for blocking GoSysCall: the associated GoSysExit
	// for GoSysExit: the next GoStart
	// for GCMarkAssistStart: the associated GCMarkAssistDone
	// for UserTaskCreate: the UserTaskEnd
	// for UserRegion: if the start region, the corresponding UserRegion end event
	Link *Event
	// contains filtered or unexported fields
}

type Frame struct {
	PC   uint64
	Fn   string
	File string
	Line int
}

type GDesc struct {
	ID           uint64
	Name         string
	PC           uint64
	CreationTime int64
	StartTime    int64
	EndTime      int64

	// List of regions in the goroutine, sorted based on the start time.
	Regions []*UserRegionDesc

	// Statistics of execution time during the goroutine execution.
	GExecutionStat
	// contains filtered or unexported fields
}

type GExecutionStat struct {
	ExecTime      int64
	SchedWaitTime int64
	IOTime        int64
	BlockTime     int64
	SyscallTime   int64
	GCTime        int64
	SweepTime     int64
	TotalTime     int64
}

type GoroutineExecStats struct {
	// These stats are all non-overlapping.
	ExecTime          time.Duration
	SchedWaitTime     time.Duration
	BlockTimeByReason map[string]time.Duration
	SyscallTime       time.Duration
	SyscallBlockTime  time.Duration

	// TotalTime is the duration of the goroutine's presence in the trace.
	// Necessarily overlaps with other stats.
	TotalTime time.Duration

	// Total time the goroutine spent in certain ranges; may overlap
	// with other stats.
	RangeTime map[string]time.Duration
}

type GoroutineSummary struct {
	ID           tracev2.GoID
	Name         string       // A non-unique human-friendly identifier for the goroutine.
	PC           uint64       // The first PC we saw for the entry function of the goroutine
	CreationTime tracev2.Time // Timestamp of the first appearance in the trace.
	StartTime    tracev2.Time // Timestamp of the first time it started running. 0 if the goroutine never ran.
	EndTime      tracev2.Time // Timestamp of when the goroutine exited. 0 if the goroutine never exited.

	// List of regions in the goroutine, sorted based on the start time.
	Regions []*UserRegionSummary

	// Statistics of execution time during the goroutine execution.
	GoroutineExecStats
	// contains filtered or unexported fields
}

type MMUCurve struct {
	// contains filtered or unexported fields
}

type MutatorUtil struct {
	Time int64
	// Util is the mean mutator utilization starting at Time. This
	// is in the range [0, 1].
	Util float64
}

type ParseResult struct {
	// Events is the sorted list of Events in the trace.
	Events []*Event
	// Stacks is the stack traces keyed by stack IDs from the trace.
	Stacks map[uint64][]*Frame
}

type Summarizer struct {
	// contains filtered or unexported fields
}

type Summary struct {
	Goroutines map[tracev2.GoID]*GoroutineSummary
	Tasks      map[tracev2.TaskID]*UserTaskSummary
}

type UserRegionDesc struct {
	TaskID uint64
	Name   string

	// Region start event. Normally EvUserRegion start event or nil,
	// but can be EvGoCreate event if the region is a synthetic
	// region representing task inheritance from the parent goroutine.
	Start *Event

	// Region end event. Normally EvUserRegion end event or nil,
	// but can be EvGoStop or EvGoEnd event if the goroutine
	// terminated without explicitly ending the region.
	End *Event

	GExecutionStat
}

type UserRegionSummary struct {
	TaskID tracev2.TaskID
	Name   string

	// Region start event. Normally EventRegionBegin event or nil,
	// but can be a state transition event from NotExist or Undetermined
	// if the region is a synthetic region representing task inheritance
	// from the parent goroutine.
	Start *tracev2.Event

	// Region end event. Normally EventRegionEnd event or nil,
	// but can be a state transition event to NotExist if the goroutine
	// terminated without explicitly ending the region.
	End *tracev2.Event

	GoroutineExecStats
}

type UserTaskSummary struct {
	ID       tracev2.TaskID
	Name     string
	Parent   *UserTaskSummary // nil if the parent is unknown.
	Children []*UserTaskSummary

	// Task begin event. An EventTaskBegin event or nil.
	Start *tracev2.Event

	// End end event. Normally EventTaskEnd event or nil.
	End *tracev2.Event

	// Logs is a list of tracev2.EventLog events associated with the task.
	Logs []*tracev2.Event

	// List of regions in the task, sorted based on the start time.
	Regions []*UserRegionSummary

	// Goroutines is the set of goroutines associated with this task.
	Goroutines map[tracev2.GoID]*GoroutineSummary
}

type UtilFlags int

type UtilWindow struct {
	Time int64
	// MutatorUtil is the mean mutator utilization in this window.
	MutatorUtil float64
}

type Writer struct {
	bytes.Buffer
}