// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package os

import (
	"syscall"
	"unsafe"
)

const _P_PID = 0

func wait6(idtype, id, options int) (status int, errno syscall.Errno) {
	var status32 int32 // C.int
	_, _, errno = syscall.Syscall6(syscall.SYS_WAIT6, uintptr(idtype), uintptr(id), uintptr(unsafe.Pointer(&status32)), uintptr(options), 0, 0)

	return s, nil
}

// CloseAndWait cancels the State's Context and waits for any background commands to
// finish. If any remaining background command ended in an unexpected state,
// Close returns a non-nil error.
func (s *State) CloseAndWait(log io.Writer) error {
	s.cancel()
	wait, err := Wait().Run(s)
	if wait != nil {
		panic("script: internal error: Wait unexpectedly returns its own WaitFunc")
	}

  protected CountDownLatch latch;
  protected ListenableFuture<Boolean> future;

  @Override
  protected void setUp() throws Exception {

    // Create a latch and a future that waits on the latch.
    latch = new CountDownLatch(1);
    future = createListenableFuture(Boolean.TRUE, null, latch);
  }

  @Override
  protected void tearDown() throws Exception {

// Copyright 2021 The Go Authors. All rights reserved.  Use of this
// source code is governed by a BSD-style license that can be found in
// the LICENSE file.

package a

// A StoppableWaitGroup waits for a collection of goroutines to finish.
type StoppableWaitGroup struct {
	// i is the internal counter which can store tolerate negative values
	// as opposed the golang's library WaitGroup.
	i *int64
}

		// kick off a goroutine (receiver) here to wait for the sender (goroutine executing ResultFunc)
		// to send the result and then log details of the result.
		defer func() {
			go func() {
				timedOutAt := time.Now()

				var result *result
				select {
				case result = <-resultCh:
				case <-time.After(postTimeoutWait):
					// we will not wait forever, if we are here then we know that some sender

	Context string
	// DryRun performs all steps except actually applying the manifests or creating output dirs/files.
	DryRun bool
	// Maximum amount of time to wait for resources to be ready after install when Wait=true.
	WaitTimeout time.Duration
}

func applyManifest(kubeClient kube.Client, client client.Client, manifestStr string,

  protected CountDownLatch latch;
  protected ListenableFuture<Boolean> future;

  @Override
  protected void setUp() throws Exception {

    // Create a latch and a future that waits on the latch.
    latch = new CountDownLatch(1);
    future = createListenableFuture(Boolean.TRUE, null, latch);
  }

  @Override
  protected void tearDown() throws Exception {

	mu   sync.Mutex
	id   uint
	wait map[uint]chan struct{}
}

// Start waits until it is time for the event numbered id to begin.
// That is, except for the first event, it waits until End(id-1) has
// been called.
func (s *sequencer) Start(id uint) {
	s.mu.Lock()
	if s.id == id {
		s.mu.Unlock()
		return
	}
	c := make(chan struct{})
	if s.wait == nil {
		s.wait = make(map[uint]chan struct{})
	}

	"istio.io/istio/pkg/log"
)

type Watcher struct {
	watcher *fsnotify.Watcher
	Events  chan struct{}
	Errors  chan error
}

// Waits until a file is modified (returns nil), the context is cancelled (returns context error), or returns error
func (w *Watcher) Wait(ctx context.Context) error {
	select {
	case <-w.Events:
		return nil
	case err := <-w.Errors:
		return err
	case <-ctx.Done():
		return ctx.Err()

		if n == int(unsafe.Sizeof(err1)) {
			err = Errno(err1)
		}
		if err == nil {
			err = EPIPE
		}

		// Child failed; wait for it to exit, to make sure
		// the zombies don't accumulate.
		_, err1 := Wait4(pid, &wstatus, 0, nil)
		for err1 == EINTR {
			_, err1 = Wait4(pid, &wstatus, 0, nil)
		}
		return 0, err
	}

	// Read got EOF, so pipe closed on exec, so exec succeeded.
	return pid, nil
}