// Socket wraps [syscall.Socket].
func (sw *Switch) Socket(family, sotype, proto int) (s int, err error) {
	sw.once.Do(sw.init)

	so := &Status{Cookie: cookie(family, sotype, proto)}
	sw.fmu.RLock()
	f := sw.fltab[FilterSocket]
	sw.fmu.RUnlock()

	af, err := f.apply(so)
	if err != nil {
		return -1, err
	}
	s, so.Err = syscall.Socket(family, sotype, proto)
	if err = af.apply(so); err != nil {
		if so.Err == nil {

	sw.once.Do(sw.init)

	so := &Status{Cookie: cookie(int(family), int(sotype), int(proto))}
	sw.fmu.RLock()
	f, _ := sw.fltab[FilterSocket]
	sw.fmu.RUnlock()

	af, err := f.apply(so)
	if err != nil {
		return syscall.InvalidHandle, err
	}
	s, so.Err = windows.WSASocket(family, sotype, proto, protinfo, group, flags)

)

// A Switch represents a callpath point switch for socket system
// calls.
type Switch struct {
	once sync.Once

	fmu   sync.RWMutex
	fltab map[FilterType]Filter

	smu   sync.RWMutex
	sotab Sockets
	stats stats
}

func (sw *Switch) init() {
	sw.fltab = make(map[FilterType]Filter)
	sw.sotab = make(Sockets)
	sw.stats = make(stats)
}

// Stats returns a list of per-cookie socket statistics.

}

func pluginftabverify(md *moduledata) {
	badtable := false
	for i := 0; i < len(md.ftab); i++ {
		entry := md.textAddr(md.ftab[i].entryoff)
		if md.minpc <= entry && entry <= md.maxpc {
			continue
		}

		f := funcInfo{(*_func)(unsafe.Pointer(&md.pclntable[md.ftab[i].funcoff])), md}
		name := funcname(f)

		// A common bug is f.entry has a relocation to a duplicate

		throw("invalid function symbol table")
	}

	// ftab is lookup table for function by program counter.
	nftab := len(datap.ftab) - 1
	for i := 0; i < nftab; i++ {
		// NOTE: ftab[nftab].entry is legal; it is the address beyond the final function.
		if datap.ftab[i].entryoff > datap.ftab[i+1].entryoff {
			f1 := funcInfo{(*_func)(unsafe.Pointer(&datap.pclntable[datap.ftab[i].funcoff])), datap}

		// the function and look it up in the package ftab to see if we've
		// encountered it before. If we haven't, then register it with the
		// meta-data builder.
		fnhash := encodemeta.HashFuncDesc(fd)
		gfidx, ok := mm.p.ftab[fnhash]
		if !ok {
			// We haven't seen this function before, need to add it to
			// the meta data.
			gfidx = uint32(mm.p.cmdb.AddFunc(*fd))
			mm.p.ftab[fnhash] = gfidx
			if *verbflag >= 3 {

	// The filetab slice
	sliceSym(pcln.filetab)

	// The pctab slice
	sliceSym(pcln.pctab)

	// The pclntab slice
	slice(pcln.pclntab, uint64(ldr.SymSize(pcln.pclntab)))

	// The ftab slice
	slice(pcln.pclntab, uint64(pcln.nfunc+1))

	// findfunctab
	moduledata.AddAddr(ctxt.Arch, pcln.findfunctab)
	// minpc, maxpc
	moduledata.AddAddr(ctxt.Arch, pcln.firstFunc)