c.isMidWord = false
		}

		// As we save the state of the transformer, it is safe to call
		// checkpoint after any successful write.
		if !(c.isMidWord && wasMid) {
			c.checkpoint()
		}

		if !c.next() {
			break
		}
		if wasMid && c.info.isMid() {
			c.isMidWord = false
		}
	}
	return c.ret()
}

func (t *titleCaser) Span(src []byte, atEOF bool) (n int, err error) {

		if e != syscall.EINTR {
			break
		}
	}
	runtime.KeepAlive(p)
	if e != 0 {
		// waitid has been available since Linux 2.6.9, but
		// reportedly is not available in Ubuntu on Windows.
		// See issue 16610.
		if e == syscall.ENOSYS {
			return false, nil
		}
		return false, NewSyscallError("waitid", e)
	}
	return true, nil

			taskid, err := strconv.ParseUint(taskids, 10, 64)
			if err != nil {
				log.Printf("failed to parse taskid parameter %q: %v", taskids, err)
				return
			}
			task, ok := parsed.summary.Tasks[trace.TaskID(taskid)]
			if !ok {
				log.Printf("failed to find task with id %d", taskid)
				return
			}
			// This mode is goroutine-oriented.
			opts.mode = traceviewer.ModeGoroutineOriented

	type task struct {
		name       string
		parent     *trace.TaskID
		children   []trace.TaskID
		logs       []trace.Log
		goroutines []trace.GoID
	}
	parent := func(id trace.TaskID) *trace.TaskID {
		p := new(trace.TaskID)
		*p = id
		return p
	}
	wantTasks := map[trace.TaskID]task{
		trace.BackgroundTask: {
			// The background task (0) is never any task's parent.

// syscall with idtype of P_PIDFD.
//
// Reasons for non-working pidfd syscalls include an older kernel and an
// execution environment in which the above system calls are restricted by
// seccomp or a similar technology.
func checkPidfd() error {
	// Get a pidfd of the current process (opening of "/proc/self" won't
	// work for waitid).
	fd, err := unix.PidFDOpen(syscall.Getpid(), 0)

	b1 := g1.Batch(trace.ThreadID(0), 0)
	b1.Event("ProcStatus", trace.ProcID(0), go122.ProcRunning)
	b1.Event("GoStatus", trace.GoID(1), trace.ThreadID(0), go122.GoRunning)
	b1.Event("UserTaskBegin", trace.TaskID(2), trace.TaskID(0) /* 0 means no parent, not background */, "my task", testgen.NoStack)

	g2 := t.Generation(2)

	// That same goroutine emits a task end in the following generation.
	b2 := g2.Batch(trace.ThreadID(0), 5)

// waitid/wait6.

//go:build aix || darwin || (js && wasm) || openbsd || solaris || wasip1

package os

// blockUntilWaitable attempts to block until a call to p.Wait will
// succeed immediately, and reports whether it has done so.
// It does not actually call p.Wait.
// This version is used on systems that do not implement waitid,

			t.Errorf("backend %d wanted %d events, got %d", i, n, got)
			continue
		}
		for j, event := range backend.events {
			wantID := types.UID(strconv.Itoa(j))
			if event.AuditID != wantID {
				t.Errorf("backend %d event %d wanted id %s, got %s", i, j, wantID, event.AuditID)
			}
		}
	}
}

type cannotMultipleRunBackend struct {
	started chan struct{}
}

			kind trace.EventKind
			task trace.TaskID
			args []string
		}
		want := []evDesc{
			{trace.EventTaskBegin, trace.TaskID(1), []string{"task0"}},
			{trace.EventRegionBegin, trace.TaskID(1), []string{"region0"}},
			{trace.EventRegionBegin, trace.TaskID(1), []string{"region1"}},
			{trace.EventLog, trace.TaskID(1), []string{"key0", "0123456789abcdef"}},
			{trace.EventRegionEnd, trace.TaskID(1), []string{"region1"}},

        def uniqueId = Iterables.getOnlyElement(realizeOps*.details*.taskId as Set)

        when:
        configurationCacheRun(":foo")
        then:
        def realizeOp = buildOperations.only(RealizeTaskBuildOperationType)
        with(realizeOp.details) {
            taskPath == ":foo"
            taskId == uniqueId
            eager == true
        }
    }