// to make a 100% commitment.
			continue
		}
		println("runtime: kevent for EVFILT_USER failed with", -n)
		throw("runtime: kevent failed")
	}
}

func wakeNetpoll(kq int32) {
	ev := keventt{
		ident:  kqIdent,
		filter: _EVFILT_USER,
		flags:  _EV_ENABLE,
		fflags: _NOTE_TRIGGER,
	}
	for {
		n := kevent(kq, &ev, 1, nil, 0, nil)
		if n == 0 {
			break
		}
		if n == -_EINTR {

		println("runtime: pipe failed with", -errno)
		throw("runtime: pipe failed")
	}
	ev := keventt{
		filter: _EVFILT_READ,
		flags:  _EV_ADD,
	}
	*(*uintptr)(unsafe.Pointer(&ev.ident)) = uintptr(r)
	n := kevent(kq, &ev, 1, nil, 0, nil)
	if n < 0 {
		println("runtime: kevent failed with", -n)
		throw("runtime: kevent failed")
	}
	netpollBreakRd = uintptr(r)
	netpollBreakWr = uintptr(w)
}

		}
		tp = &ts
	}
	var events [64]keventt
retry:
	n := kevent(kq, nil, 0, &events[0], int32(len(events)), tp)
	if n < 0 {
		// Ignore the ETIMEDOUT error for now, but try to dive deep and
		// figure out what really happened with n == ETIMEOUT,
		// see https://go.dev/issue/59679 for details.
		if n != -_EINTR && n != -_ETIMEDOUT {
			println("runtime: kevent on fd", kq, "failed with", -n)

type Siginfo C.siginfo_t

type Mcontext C.mcontext_t
type Ucontext C.ucontext_t

type Timespec C.struct_timespec
type Timeval C.struct_timeval
type Itimerval C.struct_itimerval

package runtime

import (
	"internal/runtime/atomic"
	"unsafe"
)

//go:noescape
func sigaction(sig uint32, new, old *sigactiont)

func kqueue() int32

//go:noescape
func kevent(kq int32, ch *keventt, nch int32, ev *keventt, nev int32, ts *timespec) int32

func raiseproc(sig uint32)

func getthrid() int32
func thrkill(tid int32, sig int)

// read calls the read system call.

//go:cgo_unsafe_args
func kqueue() int32 {
	return libcCall(unsafe.Pointer(abi.FuncPCABI0(kqueue_trampoline)), nil)
}
func kqueue_trampoline()

//go:nosplit
//go:cgo_unsafe_args
func kevent(kq int32, ch *keventt, nch int32, ev *keventt, nev int32, ts *timespec) int32 {
	ret := libcCall(unsafe.Pointer(abi.FuncPCABI0(kevent_trampoline)), unsafe.Pointer(&kq))
	KeepAlive(ch)
	KeepAlive(ev)
	KeepAlive(ts)
	return ret
}

type StackT C.stack_t

type Timespec C.struct_timespec
type Timeval C.struct_timeval
type Itimerval C.struct_itimerval

type McontextT C.mcontext_t
type UcontextT C.ucontext_t

type Regs32 C.struct_i386_thread_state
type FloatState32 C.struct_i386_float_state
type ExceptionState32 C.struct_i386_exception_state
type Mcontext32 C.struct_mcontext32

type Ucontext C.struct_ucontext

type Kevent C.struct_kevent

type Pthread C.pthread_t
type PthreadAttr C.pthread_attr_t
type PthreadMutex C.pthread_mutex_t
type PthreadMutexAttr C.pthread_mutexattr_t
type PthreadCond C.pthread_cond_t

//go:noescape
func sys_umtx_wakeup(addr *uint32, val int32) int32

func osyield()

//go:nosplit
func osyield_no_g() {
	osyield()
}

func kqueue() int32

//go:noescape
func kevent(kq int32, ch *keventt, nch int32, ev *keventt, nev int32, ts *timespec) int32

func pipe2(flags int32) (r, w int32, errno int32)
func fcntl(fd, cmd, arg int32) (ret int32, errno int32)

func issetugid() int32

import (
	"strconv"
	"strings"

	"internal/trace/event"
	"internal/trace/version"
)

// Event is a simple representation of a trace event.
//
// Note that this typically includes much more than just
// timestamped events, and it also represents parts of the
// trace format's framing. (But not interpreted.)
type Event struct {
	Version version.Version
	Ev      event.Type
	Args    []uint64
	Data    []byte
}