dieOnce sync.Once // guards close of dying
	dying   = make(chan struct{})
)

func bginit() {
	bghelpers.Add(maxbg)
	for i := 0; i < maxbg; i++ {
		go bghelper()
	}
}

func bghelper() {
	defer bghelpers.Done()
	for {
		select {
		case <-dying:
			return
		case w := <-bgwork:
			// Dying takes precedence over doing more work.
			select {
			case <-dying:
				return

	gp.m.mallocing++

	// If we're dying because of a bad lock count, set it to a
	// good lock count so we don't recursively panic below.
	if gp.m.locks < 0 {
		gp.m.locks = 1
	}

	switch gp.m.dying {
	case 0:
		// Setting dying >0 has the side-effect of disabling this G's writebuf.
		gp.m.dying = 1
		panicking.Add(1)
		lock(&paniclk)

//
//go:nosplit
func writeErrData(data *byte, n int32) {
	write(2, unsafe.Pointer(data), n)

	// If crashing, print a copy to the SetCrashOutput fd.
	gp := getg()
	if gp != nil && gp.m.dying > 0 ||
		gp == nil && panicking.Load() > 0 {
		if fd := crashFD.Load(); fd != ^uintptr(0) {
			write(fd, unsafe.Pointer(data), n)
		}
	}
}

    super(threadName);
    this.lockLikeObject = checkNotNull(lockLikeObject);
    start();
  }

  // Thread.stop() is okay because all threads started by a test are dying at the end of the test,
  // so there is no object state put at risk by stopping the threads abruptly. In some cases a test
  // may put a thread into an uninterruptible operation intentionally, so there is no other way to

    super(threadName);
    this.lockLikeObject = checkNotNull(lockLikeObject);
    start();
  }

  // Thread.stop() is okay because all threads started by a test are dying at the end of the test,
  // so there is no object state put at risk by stopping the threads abruptly. In some cases a test
  // may put a thread into an uninterruptible operation intentionally, so there is no other way to

				os.Exit(2)
			}
			if !filepath.IsAbs(p) {
				if cfg.Getenv("GOPATH") == "" {
					// We inferred $GOPATH from $HOME and did a bad job at it.
					// Instead of dying, uninfer it.
					cfg.BuildContext.GOPATH = ""
				} else {
					counterErrorsGOPATHEntryRelative.Inc()

   *       between paging memory and killing other processes - so allocating a gigantic buffer and
   *       then sequentially accessing it could result in other processes dying. This is solvable
   *       via madvise(2), but that obviously doesn't exist in java.
   *   <li>Ordinary copy. Kernel copies bytes into a kernel buffer, from a kernel buffer into a

   *       between paging memory and killing other processes - so allocating a gigantic buffer and
   *       then sequentially accessing it could result in other processes dying. This is solvable
   *       via madvise(2), but that obviously doesn't exist in java.
   *   <li>Ordinary copy. Kernel copies bytes into a kernel buffer, from a kernel buffer into a

//
// The predefined profiles may assign meaning to other debug values;
// for example, when printing the "goroutine" profile, debug=2 means to
// print the goroutine stacks in the same form that a Go program uses
// when dying due to an unrecovered panic.
func (p *Profile) WriteTo(w io.Writer, debug int) error {
	if p.name == "" {
		panic("pprof: use of zero Profile")
	}
	if p.write != nil {
		return p.write(w, debug)
	}

	id            int64
	mallocing     int32
	throwing      throwType
	preemptoff    string // if != "", keep curg running on this m
	locks         int32
	dying         int32
	profilehz     int32
	spinning      bool // m is out of work and is actively looking for work
	blocked       bool // m is blocked on a note
	newSigstack   bool // minit on C thread called sigaltstack