GoStatus dt=1 g=2 m=1 gstatus=2
ProcStatus dt=1 p=0 pstatus=4
ProcSteal dt=1 p=0 p_seq=1 m=0
EventBatch gen=1 m=18446744073709551615 time=0 size=5
Frequency freq=15625000
EventBatch gen=1 m=18446744073709551615 time=0 size=1
Stacks
EventBatch gen=1 m=18446744073709551615 time=0 size=1

				x := s.base() + i*s.elemsize
				trace.HeapObjectExists(x, s.typePointersOfUnchecked(x).typ)
			}
			abits.advance()
		}
	}

	// Write out all the goroutine stacks.
	forEachGRace(func(gp *g) {
		trace.GoroutineStackExists(gp.stack.lo, gp.stack.hi-gp.stack.lo)
	})
	traceRelease(trace)
}

func traceSpanTypeAndClass(s *mspan) traceArg {
	if s.state.get() == mSpanInUse {
		return traceArg(s.spanclass) << 1
	}

			switch leaf {
			case "runtime._System", "runtime._GC", "runtime._ExternalCode", "runtime._VDSO":
				continue
			}
			stack := strings.Join(fns, "|")
			samples := int(s.Value[0])
			pprofStacks[stack] += samples
		}
	}
	for stack, samples := range pprofStacks {
		fmt.Fprintf(os.Stderr, "%s\t%d\n", stack, samples)
	}
}

func cpuHogger(f func(x int) int, y *int, dur time.Duration) {

		"go 1.5 trace\x00\x00\x00\x00T00\x020",
		"go 1.5 trace\x00\x00\x00\x00\xc3\x0200",
	}
	for _, data := range tests {
		res, err := Parse(strings.NewReader(data), 5)
		if err == nil || res.Events.Len() != 0 || res.Stacks != nil {
			t.Fatalf("no error on input: %q", data)
		}
	}
}

func TestParseCanned(t *testing.T) {
	files, err := os.ReadDir("./testdata")
	if err != nil {
		t.Fatalf("failed to read ./testdata: %v", err)

UserRegionBegin dt=286 task=1 name_string=24 stack=15
UserRegionBegin dt=244 task=1 name_string=25 stack=16
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