// running process to exit.
func WaitProcess(pid int, w *Waitmsg) (err error) {
	procs.Lock()
	ch := procs.waits[pid]
	procs.Unlock()

	var wmsg *waitErr
	if ch != nil {
		wmsg = <-ch
		procs.Lock()
		if procs.waits[pid] == ch {
			delete(procs.waits, pid)
		}
		procs.Unlock()
	}
	if wmsg == nil {
		// ch was missing or ch is closed
		return NewError("process not found")

					series = len(out)
					out = append(out, []MutatorUtil{{int64(ev.Time()), 1}})
				}
				ps = append(ps, perP{series: series})
			}
			if len(procs) == 0 || gomaxprocs != procs[len(procs)-1].n {
				procs = append(procs, procsCount{time: int64(ev.Time()), n: gomaxprocs})
			}
		}
		if len(ps) == 0 {
			// We can't start doing any analysis until we see what GOMAXPROCS is.

	if len(*matchBenchmarks) == 0 {
		return true
	}
	// Collect matching benchmarks and determine longest name.
	maxprocs := 1
	for _, procs := range cpuList {
		if procs > maxprocs {
			maxprocs = procs
		}
	}
	ctx := &benchContext{
		match:  newMatcher(matchString, *matchBenchmarks, "-test.bench", *skip),
		extLen: len(benchmarkName("", maxprocs)),
	}

}

// Gomaxprocs emits a ProcsChange event.
func (tl traceLocker) Gomaxprocs(procs int32) {
	tl.eventWriter(traceGoRunning, traceProcRunning).commit(traceEvProcsChange, traceArg(procs), tl.stack(1))
}

// ProcStart traces a ProcStart event.
//
// Must be called with a valid P.
func (tl traceLocker) ProcStart() {
	pp := tl.mp.p.ptr()

}

type Sysinfo_t struct {
	Uptime    int64
	Loads     [3]uint64
	Totalram  uint64
	Freeram   uint64
	Sharedram uint64
	Bufferram uint64
	Totalswap uint64
	Freeswap  uint64
	Procs     uint16
	Pad       uint16
	Totalhigh uint64
	Freehigh  uint64
	Unit      uint32
	_         [0]int8
	_         [4]byte
}

type Ustat_t struct {
	Tfree  int32
	Tinode uint64

}

type Sysinfo_t struct {
	Uptime    int32
	Loads     [3]uint32
	Totalram  uint32
	Freeram   uint32
	Sharedram uint32
	Bufferram uint32
	Totalswap uint32
	Freeswap  uint32
	Procs     uint16
	Pad       uint16
	Totalhigh uint32
	Freehigh  uint32
	Unit      uint32
	_         [8]int8
}

type Ustat_t struct {
	Tfree  int32
	Tinode uint32
	Fname  [6]int8

}

type Sysinfo_t struct {
	Uptime    int64
	Loads     [3]uint64
	Totalram  uint64
	Freeram   uint64
	Sharedram uint64
	Bufferram uint64
	Totalswap uint64
	Freeswap  uint64
	Procs     uint16
	Pad       uint16
	Totalhigh uint64
	Freehigh  uint64
	Unit      uint32
	_         [0]uint8
	_         [4]byte
}

type Ustat_t struct {
	Tfree  int32
	Tinode uint64

}

type Sysinfo_t struct {
	Uptime    int32
	Loads     [3]uint32
	Totalram  uint32
	Freeram   uint32
	Sharedram uint32
	Bufferram uint32
	Totalswap uint32
	Freeswap  uint32
	Procs     uint16
	Pad       uint16
	Totalhigh uint32
	Freehigh  uint32
	Unit      uint32
	_         [8]uint8
}

type Ustat_t struct {
	Tfree  int32
	Tinode uint32
	Fname  [6]uint8

}

type Sysinfo_t struct {
	Uptime    int64
	Loads     [3]uint64
	Totalram  uint64
	Freeram   uint64
	Sharedram uint64
	Bufferram uint64
	Totalswap uint64
	Freeswap  uint64
	Procs     uint16
	Pad       uint16
	Totalhigh uint64
	Freehigh  uint64
	Unit      uint32
	_         [0]uint8
	_         [4]byte
}

type Ustat_t struct {
	Tfree  int32
	Tinode uint64

}

type Sysinfo_t struct {
	Uptime    int64
	Loads     [3]uint64
	Totalram  uint64
	Freeram   uint64
	Sharedram uint64
	Bufferram uint64
	Totalswap uint64
	Freeswap  uint64
	Procs     uint16
	Pad       uint16
	Totalhigh uint64
	Freehigh  uint64
	Unit      uint32
	_         [0]uint8
	_         [4]byte
}

type Ustat_t struct {
	Tfree  int32
	Tinode uint64