IsTimedEvent: true,
	},
	EvGoStatus: event.Spec{
		Name:         "GoStatus",
		Args:         []string{"dt", "g", "m", "gstatus"},
		IsTimedEvent: true,
	},
	EvSTWBegin: event.Spec{
		Name:         "STWBegin",
		Args:         []string{"dt", "kind_string", "stack"},
		IsTimedEvent: true,
		StackIDs:     []int{2},
		StringIDs:    []int{1},
	},
	EvSTWEnd: event.Spec{
		Name:         "STWEnd",

ProcStart dt=451 p=2 p_seq=1
GoStart dt=188 g=8 g_seq=1
EventBatch gen=1 m=167926 time=28113086275999 size=324
ProcStatus dt=295 p=0 pstatus=1
GoStatus dt=5 g=1 m=167926 gstatus=2
ProcsChange dt=405 procs_value=48 stack=1
STWBegin dt=65 kind_string=21 stack=2
HeapGoal dt=2 heapgoal_value=4194304
ProcStatus dt=4 p=1 pstatus=2
ProcStatus dt=1 p=2 pstatus=2
ProcStatus dt=1 p=3 pstatus=2
ProcStatus dt=1 p=4 pstatus=2
ProcStatus dt=1 p=5 pstatus=2

HeapAlloc dt=376 heapalloc_value=7628528
HeapAlloc dt=13 heapalloc_value=7636720
HeapAlloc dt=7 heapalloc_value=7644912
HeapAlloc dt=35 heapalloc_value=7653104
GCBegin dt=23 gc_seq=3 stack=22
STWBegin dt=73 kind_string=22 stack=28
GoUnblock dt=258 g=4 g_seq=5 stack=29
ProcsChange dt=80 procs_value=8 stack=30
STWEnd dt=37
GCMarkAssistBegin dt=96 stack=31
GCMarkAssistEnd dt=4606

	// N.B. Only one GC can be running at a time, so this is naturally
	// serialized by the caller.
	trace.seqGC++
}

// STWStart traces a STWBegin event.
func (tl traceLocker) STWStart(reason stwReason) {
	// Although the current P may be in _Pgcstop here, we model the P as running during the STW. This deviates from the

GoDestroy dt=5
ProcStop dt=42
EventBatch gen=1 m=1986492 time=2753925244400 size=582
ProcStatus dt=67 p=1 pstatus=1
GoStatus dt=4 g=1 m=1986492 gstatus=2
ProcsChange dt=220 procs_value=8 stack=1
STWBegin dt=127 kind_string=21 stack=2
HeapGoal dt=3 heapgoal_value=4194304
ProcStatus dt=2 p=0 pstatus=2
ProcStatus dt=2 p=2 pstatus=2
ProcStatus dt=1 p=3 pstatus=2
ProcStatus dt=1 p=4 pstatus=2

	desc, err := gState.endRange(ev.typ)
	if err != nil {
		return curCtx, false, err
	}
	if ev.typ == go122.EvSTWEnd {
		// Smuggle the kind into the event.
		// Don't use ev.extra here so we have symmetry with STWBegin.
		ev.args[0] = uint64(desc)
	}
	o.queue.push(Event{table: evt, ctx: curCtx, base: *ev})
	return curCtx, true, nil
}

GCMarkAssistBegin dt=127 stack=3
GoBlock dt=42 reason_string=13 stack=11
GoStart dt=766 g=122 g_seq=2
GCMarkAssistEnd dt=2
HeapAlloc dt=19 heapalloc_value=194902744
GCMarkAssistBegin dt=66 stack=3
STWBegin dt=12586 kind_string=21 stack=21
GoUnblock dt=699 g=91 g_seq=3 stack=22
GoUnblock dt=5 g=127 g_seq=9 stack=22
GoUnblock dt=3 g=112 g_seq=8 stack=22
GoUnblock dt=4 g=82 g_seq=10 stack=22