Stacks
EventBatch gen=1 m=18446744073709551615 time=0 size=11
Strings
String id=1
	data="my task"
EventBatch gen=2 m=0 time=5 size=13
ProcStatus dt=1 p=0 pstatus=1
GoStatus dt=1 g=1 m=0 gstatus=2
UserTaskEnd dt=1 task=2 stack=0
EventBatch gen=2 m=18446744073709551615 time=0 size=5
Frequency freq=15625000
EventBatch gen=2 m=18446744073709551615 time=0 size=1
Stacks
EventBatch gen=2 m=18446744073709551615 time=0 size=1

}

//
// Function bodies are defined in runtime/trace.go
//

// emits UserTaskCreate event.
func userTaskCreate(id, parentID uint64, taskType string)

// emits UserTaskEnd event.
func userTaskEnd(id uint64)

// emits UserRegion event.
func userRegion(id, mode uint64, regionType string)

// emits UserLog event.

ProcStart dt=16790 p=4 p_seq=17
GoUnblock dt=23 g=1 g_seq=19 stack=0
GoUnblock dt=8 g=56 g_seq=2 stack=0
GoStart dt=142 g=56 g_seq=3
UserTaskEnd dt=14 task=22 stack=36
UserRegionEnd dt=8 task=21 name_string=31 stack=28
GoDestroy dt=5
GoStart dt=18 g=1 g_seq=20
UserTaskEnd dt=17 task=21 stack=70
UserTaskEnd dt=12 task=4 stack=71
HeapAlloc dt=802 heapalloc_value=1835008
HeapAlloc dt=41 heapalloc_value=1843200

	b2 := g2.Batch(trace.ThreadID(0), 5)
	b2.Event("ProcStatus", trace.ProcID(0), go122.ProcRunning)
	b2.Event("GoStatus", trace.GoID(1), trace.ThreadID(0), go122.GoRunning)
	b2.Event("UserTaskEnd", trace.TaskID(2), testgen.NoStack)

	traceRelease(tl)
}

// trace_userTaskEnd emits a UserTaskEnd event.
//
//go:linkname trace_userTaskEnd runtime/trace.userTaskEnd
func trace_userTaskEnd(id uint64) {
	tl := traceAcquire()
	if !tl.ok() {
		// Need to do this check because the caller won't have it.
		return
	}

		Args:         []string{"dt", "task", "parent_task", "name_string", "stack"},
		IsTimedEvent: true,
		StackIDs:     []int{4},
		StringIDs:    []int{3},
	},
	EvUserTaskEnd: event.Spec{
		Name:         "UserTaskEnd",
		Args:         []string{"dt", "task", "stack"},
		IsTimedEvent: true,
		StackIDs:     []int{2},
	},
	EvUserRegionBegin: event.Spec{
		Name:         "UserRegionBegin",

UserRegionBegin dt=6 task=1 name_string=26 stack=17
UserLog dt=6 task=1 key_string=27 value_string=28 stack=18
UserRegionEnd dt=4 task=1 name_string=26 stack=19
UserRegionEnd dt=315 task=1 name_string=25 stack=20
UserTaskEnd dt=5 task=1 stack=21
GoUnblock dt=11 g=1 g_seq=1 stack=22
GoDestroy dt=6
GoStart dt=10 g=1 g_seq=2
UserRegionBegin dt=278 task=0 name_string=29 stack=23
EventBatch gen=1 m=18446744073709551615 time=28113086280061 size=57

	EvGCMarkAssistDone:  {"GCMarkAssistDone", 9, false, []string{}, nil},
	EvUserTaskCreate:    {"UserTaskCreate", 11, true, []string{"taskid", "pid", "typeid"}, []string{"name"}},
	EvUserTaskEnd:       {"UserTaskEnd", 11, true, []string{"taskid"}, nil},
	EvUserRegion:        {"UserRegion", 11, true, []string{"taskid", "mode", "typeid"}, []string{"name"}},