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Commit 0e7995c0 authored by Alex Brainman's avatar Alex Brainman
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net: refactor windows code 

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/4185054
parent 0cf6f8c0
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Inline Side-by-side
Showing with 310 additions and 368 deletions
src/pkg/net/fd_windows.go
View file @ 0e7995c0
......@@ -13,147 +13,241 @@ import (
"unsafe"
)
type InvalidConnError struct{}
func (e *InvalidConnError) String() string { return "invalid net.Conn" }
func (e *InvalidConnError) Temporary() bool { return false }
func (e *InvalidConnError) Timeout() bool { return false }
var initErr os.Error
func init() {
var d syscall.WSAData
e := syscall.WSAStartup(uint32(0x101), &d)
if e != 0 {
initErr = os.NewSyscallError("WSAStartup", e)
}
}
func closesocket(s int) (errno int) {
return syscall.Closesocket(int32(s))
}
// Interface for all io operations.
type anOpIface interface {
Op() *anOp
Name() string
Submit() (errno int)
}
// IO completion result parameters.
type ioResult struct {
key uint32
qty uint32
errno int
qty uint32
err int
}
// Network file descriptor.
type netFD struct {
// locking/lifetime of sysfd
sysmu sync.Mutex
sysref int
closing bool
// anOp implements functionality common to all io operations.
type anOp struct {
// Used by IOCP interface, it must be first field
// of the struct, as our code rely on it.
o syscall.Overlapped
// immutable until Close
sysfd int
family int
proto int
cr chan *ioResult
cw chan *ioResult
net string
laddr Addr
raddr Addr
resultc chan ioResult // io completion results
errnoc chan int // io submit / cancel operation errors
fd *netFD
}
// owned by client
rdeadline_delta int64
rdeadline int64
rio sync.Mutex
wdeadline_delta int64
wdeadline int64
wio sync.Mutex
func (o *anOp) Init(fd *netFD) {
o.fd = fd
o.resultc = make(chan ioResult, 1)
o.errnoc = make(chan int)
}
type InvalidConnError struct{}
func (o *anOp) Op() *anOp {
return o
}
func (e *InvalidConnError) String() string { return "invalid net.Conn" }
func (e *InvalidConnError) Temporary() bool { return false }
func (e *InvalidConnError) Timeout() bool { return false }
// bufOp is used by io operations that read / write
// data from / to client buffer.
type bufOp struct {
anOp
buf syscall.WSABuf
}
// pollServer will run around waiting for io completion request
// to arrive. Every request received will contain channel to signal
// io owner about the completion.
func (o *bufOp) Init(fd *netFD, buf []byte) {
o.anOp.Init(fd)
o.buf.Len = uint32(len(buf))
if len(buf) == 0 {
o.buf.Buf = nil
} else {
o.buf.Buf = (*byte)(unsafe.Pointer(&buf[0]))
}
}
type pollServer struct {
// resultSrv will retreive all io completion results from
// iocp and send them to the correspondent waiting client
// goroutine via channel supplied in the request.
type resultSrv struct {
iocp int32
}
func newPollServer() (s *pollServer, err os.Error) {
s = new(pollServer)
var e int
if s.iocp, e = syscall.CreateIoCompletionPort(-1, 0, 0, 1); e != 0 {
return nil, os.NewSyscallError("CreateIoCompletionPort", e)
func (s *resultSrv) Run() {
var o *syscall.Overlapped
var key uint32
var r ioResult
for {
r.err = syscall.GetQueuedCompletionStatus(s.iocp, &(r.qty), &key, &o, syscall.INFINITE)
switch {
case r.err == 0:
// Dequeued successfully completed io packet.
case r.err == syscall.WAIT_TIMEOUT && o == nil:
// Wait has timed out (should not happen now, but might be used in the future).
panic("GetQueuedCompletionStatus timed out")
case o == nil:
// Failed to dequeue anything -> report the error.
panic("GetQueuedCompletionStatus failed " + syscall.Errstr(r.err))
default:
// Dequeued failed io packet.
}
(*anOp)(unsafe.Pointer(o)).resultc <- r
}
go s.Run()
return s, nil
}
type ioPacket struct {
// Used by IOCP interface,
// it must be first field of the struct,
// as our code rely on it.
o syscall.Overlapped
// Link to the io owner.
c chan *ioResult
w *syscall.WSABuf
// ioSrv executes net io requests.
type ioSrv struct {
submchan chan anOpIface // submit io requests
canchan chan anOpIface // cancel io requests
}
func (s *pollServer) getCompletedIO() (ov *syscall.Overlapped, result *ioResult, err os.Error) {
var r ioResult
var o *syscall.Overlapped
e := syscall.GetQueuedCompletionStatus(s.iocp, &r.qty, &r.key, &o, syscall.INFINITE)
switch {
case e == 0:
// Dequeued successfully completed io packet.
return o, &r, nil
case e == syscall.WAIT_TIMEOUT && o == nil:
// Wait has timed out (should not happen now, but might be used in the future).
return nil, &r, os.NewSyscallError("GetQueuedCompletionStatus", e)
case o == nil:
// Failed to dequeue anything -> report the error.
return nil, &r, os.NewSyscallError("GetQueuedCompletionStatus", e)
default:
// Dequeued failed io packet.
r.errno = e
return o, &r, nil
// ProcessRemoteIO will execute submit io requests on behalf
// of other goroutines, all on a single os thread, so it can
// cancel them later. Results of all operations will be sent
// back to their requesters via channel supplied in request.
func (s *ioSrv) ProcessRemoteIO() {
runtime.LockOSThread()
defer runtime.UnlockOSThread()
for {
select {
case o := <-s.submchan:
o.Op().errnoc <- o.Submit()
case o := <-s.canchan:
o.Op().errnoc <- syscall.CancelIo(uint32(o.Op().fd.sysfd))
}
}
return
}
func (s *pollServer) Run() {
for {
o, r, err := s.getCompletedIO()
if err != nil {
panic("Run pollServer: " + err.String() + "\n")
// ExecIO executes a single io operation. It either executes it
// inline, or, if timeouts are employed, passes the request onto
// a special goroutine and waits for completion or cancels request.
func (s *ioSrv) ExecIO(oi anOpIface, deadline_delta int64) (n int, err os.Error) {
var e int
o := oi.Op()
if deadline_delta > 0 {
// Send request to a special dedicated thread,
// so it can stop the io with CancelIO later.
s.submchan <- oi
e = <-o.errnoc
} else {
e = oi.Submit()
}
switch e {
case 0:
// IO completed immediately, but we need to get our completion message anyway.
case syscall.ERROR_IO_PENDING:
// IO started, and we have to wait for it's completion.
default:
return 0, &OpError{oi.Name(), o.fd.net, o.fd.laddr, os.Errno(e)}
}
// Wait for our request to complete.
var r ioResult
if deadline_delta > 0 {
select {
case r = <-o.resultc:
case <-time.After(deadline_delta):
s.canchan <- oi
<-o.errnoc
r = <-o.resultc
if r.err == syscall.ERROR_OPERATION_ABORTED { // IO Canceled
r.err = syscall.EWOULDBLOCK
}
}
p := (*ioPacket)(unsafe.Pointer(o))
p.c <- r
} else {
r = <-o.resultc
}
if r.err != 0 {
err = &OpError{oi.Name(), o.fd.net, o.fd.laddr, os.Errno(r.err)}
}
return int(r.qty), err
}
// Network FD methods.
// All the network FDs use a single pollServer.
var pollserver *pollServer
// Start helper goroutines.
var resultsrv *resultSrv
var iosrv *ioSrv
var onceStartServer sync.Once
func startServer() {
p, err := newPollServer()
if err != nil {
panic("Start pollServer: " + err.String() + "\n")
}
pollserver = p
go timeoutIO()
resultsrv = new(resultSrv)
var errno int
resultsrv.iocp, errno = syscall.CreateIoCompletionPort(-1, 0, 0, 1)
if errno != 0 {
panic("CreateIoCompletionPort failed " + syscall.Errstr(errno))
}
go resultsrv.Run()
iosrv = new(ioSrv)
iosrv.submchan = make(chan anOpIface)
iosrv.canchan = make(chan anOpIface)
go iosrv.ProcessRemoteIO()
}
var initErr os.Error
// Network file descriptor.
type netFD struct {
// locking/lifetime of sysfd
sysmu sync.Mutex
sysref int
closing bool
func newFD(fd, family, proto int, net string, laddr, raddr Addr) (f *netFD, err os.Error) {
if initErr != nil {
return nil, initErr
}
onceStartServer.Do(startServer)
// Associate our socket with pollserver.iocp.
if _, e := syscall.CreateIoCompletionPort(int32(fd), pollserver.iocp, 0, 0); e != 0 {
return nil, &OpError{"CreateIoCompletionPort", net, laddr, os.Errno(e)}
}
// immutable until Close
sysfd int
family int
proto int
net string
laddr Addr
raddr Addr
// owned by client
rdeadline_delta int64
rdeadline int64
rio sync.Mutex
wdeadline_delta int64
wdeadline int64
wio sync.Mutex
}
func allocFD(fd, family, proto int, net string, laddr, raddr Addr) (f *netFD) {
f = &netFD{
sysfd: fd,
family: family,
proto: proto,
cr: make(chan *ioResult, 1),
cw: make(chan *ioResult, 1),
net: net,
laddr: laddr,
raddr: raddr,
}
runtime.SetFinalizer(f, (*netFD).Close)
return f, nil
return f
}
func newFD(fd, family, proto int, net string, laddr, raddr Addr) (f *netFD, err os.Error) {
if initErr != nil {
return nil, initErr
}
onceStartServer.Do(startServer)
// Associate our socket with resultsrv.iocp.
if _, e := syscall.CreateIoCompletionPort(int32(fd), resultsrv.iocp, 0, 0); e != 0 {
return nil, &OpError{"CreateIoCompletionPort", net, laddr, os.Errno(e)}
}
return allocFD(fd, family, proto, net, laddr, raddr), nil
}
// Add a reference to this fd.
......@@ -172,7 +266,7 @@ func (fd *netFD) decref() {
// In case the user has set linger, switch to blocking mode so
// the close blocks. As long as this doesn't happen often, we
// can handle the extra OS processes. Otherwise we'll need to
// use the pollserver for Close too. Sigh.
// use the resultsrv for Close too. Sigh.
syscall.SetNonblock(fd.sysfd, false)
closesocket(fd.sysfd)
fd.sysfd = -1
......@@ -194,89 +288,22 @@ func (fd *netFD) Close() os.Error {
return nil
}
func newWSABuf(p []byte) *syscall.WSABuf {
var p0 *byte
if len(p) > 0 {
p0 = (*byte)(unsafe.Pointer(&p[0]))
}
return &syscall.WSABuf{uint32(len(p)), p0}
}
func waitPacket(fd *netFD, pckt *ioPacket, mode int) (r *ioResult) {
var delta int64
if mode == 'r' {
delta = fd.rdeadline_delta
}
if mode == 'w' {
delta = fd.wdeadline_delta
}
if delta <= 0 {
return <-pckt.c
}
// Read from network.
select {
case r = <-pckt.c:
case <-time.After(delta):
a := &arg{f: cancel, fd: fd, pckt: pckt, c: make(chan int)}
ioChan <- a
<-a.c
r = <-pckt.c
if r.errno == 995 { // IO Canceled
r.errno = syscall.EWOULDBLOCK
}
}
return r
type readOp struct {
bufOp
}
const (
read = iota
readfrom
write
writeto
cancel
)
func (o *readOp) Submit() (errno int) {
var d, f uint32
return syscall.WSARecv(uint32(o.fd.sysfd), &o.buf, 1, &d, &f, &o.o, nil)
}
type arg struct {
f int
fd *netFD
pckt *ioPacket
done *uint32
flags *uint32
rsa *syscall.RawSockaddrAny
size *int32
sa *syscall.Sockaddr
c chan int
}
var ioChan chan *arg = make(chan *arg)
func timeoutIO() {
// CancelIO only cancels all pending input and output (I/O) operations that are
// issued by the calling thread for the specified file, does not cancel I/O
// operations that other threads issue for a file handle. So we need do all timeout
// I/O in single OS thread.
runtime.LockOSThread()
defer runtime.UnlockOSThread()
for {
o := <-ioChan
var e int
switch o.f {
case read:
e = syscall.WSARecv(uint32(o.fd.sysfd), o.pckt.w, 1, o.done, o.flags, &o.pckt.o, nil)
case readfrom:
e = syscall.WSARecvFrom(uint32(o.fd.sysfd), o.pckt.w, 1, o.done, o.flags, o.rsa, o.size, &o.pckt.o, nil)
case write:
e = syscall.WSASend(uint32(o.fd.sysfd), o.pckt.w, 1, o.done, uint32(0), &o.pckt.o, nil)
case writeto:
e = syscall.WSASendto(uint32(o.fd.sysfd), o.pckt.w, 1, o.done, 0, *o.sa, &o.pckt.o, nil)
case cancel:
e = syscall.CancelIo(uint32(o.fd.sysfd))
}
o.c <- e
}
func (o *readOp) Name() string {
return "WSARecv"
}
func (fd *netFD) Read(p []byte) (n int, err os.Error) {
func (fd *netFD) Read(buf []byte) (n int, err os.Error) {
if fd == nil {
return 0, os.EINVAL
}
......@@ -287,45 +314,37 @@ func (fd *netFD) Read(p []byte) (n int, err os.Error) {
if fd.sysfd == -1 {
return 0, os.EINVAL
}
// Submit receive request.
var pckt ioPacket
pckt.c = fd.cr
pckt.w = newWSABuf(p)
var done uint32
flags := uint32(0)
var e int
if fd.rdeadline_delta > 0 {
a := &arg{f: read, fd: fd, pckt: &pckt, done: &done, flags: &flags, c: make(chan int)}
ioChan <- a
e = <-a.c
} else {
e = syscall.WSARecv(uint32(fd.sysfd), pckt.w, 1, &done, &flags, &pckt.o, nil)
}
switch e {
case 0:
// IO completed immediately, but we need to get our completion message anyway.
case syscall.ERROR_IO_PENDING:
// IO started, and we have to wait for it's completion.
default:
return 0, &OpError{"WSARecv", fd.net, fd.laddr, os.Errno(e)}
}
// Wait for our request to complete.
r := waitPacket(fd, &pckt, 'r')
if r.errno != 0 {
err = &OpError{"WSARecv", fd.net, fd.laddr, os.Errno(r.errno)}
}
n = int(r.qty)
var o readOp
o.Init(fd, buf)
n, err = iosrv.ExecIO(&o, fd.rdeadline_delta)
if err == nil && n == 0 {
err = os.EOF
err = &OpError{o.Name(), o.fd.net, o.fd.laddr, os.EOF}
}
return
}
func (fd *netFD) ReadFrom(p []byte) (n int, sa syscall.Sockaddr, err os.Error) {
// ReadFrom from network.
type readFromOp struct {
bufOp
rsa syscall.RawSockaddrAny
}
func (o *readFromOp) Submit() (errno int) {
var d, f uint32
l := int32(unsafe.Sizeof(o.rsa))
return syscall.WSARecvFrom(uint32(o.fd.sysfd), &o.buf, 1, &d, &f, &o.rsa, &l, &o.o, nil)
}
func (o *readFromOp) Name() string {
return "WSARecvFrom"
}
func (fd *netFD) ReadFrom(buf []byte) (n int, sa syscall.Sockaddr, err os.Error) {
if fd == nil {
return 0, nil, os.EINVAL
}
if len(p) == 0 {
if len(buf) == 0 {
return 0, nil, nil
}
fd.rio.Lock()
......@@ -335,41 +354,29 @@ func (fd *netFD) ReadFrom(p []byte) (n int, sa syscall.Sockaddr, err os.Error) {
if fd.sysfd == -1 {
return 0, nil, os.EINVAL
}
// Submit receive request.
var pckt ioPacket
pckt.c = fd.cr
pckt.w = newWSABuf(p)
var done uint32
flags := uint32(0)
var rsa syscall.RawSockaddrAny
l := int32(unsafe.Sizeof(rsa))
var e int
if fd.rdeadline_delta > 0 {
a := &arg{f: readfrom, fd: fd, pckt: &pckt, done: &done, flags: &flags, rsa: &rsa, size: &l, c: make(chan int)}
ioChan <- a
e = <-a.c
} else {
e = syscall.WSARecvFrom(uint32(fd.sysfd), pckt.w, 1, &done, &flags, &rsa, &l, &pckt.o, nil)
}
switch e {
case 0:
// IO completed immediately, but we need to get our completion message anyway.
case syscall.ERROR_IO_PENDING:
// IO started, and we have to wait for it's completion.
default:
return 0, nil, &OpError{"WSARecvFrom", fd.net, fd.laddr, os.Errno(e)}
}
// Wait for our request to complete.
r := waitPacket(fd, &pckt, 'r')
if r.errno != 0 {
err = &OpError{"WSARecvFrom", fd.net, fd.laddr, os.Errno(r.errno)}
}
n = int(r.qty)
sa, _ = rsa.Sockaddr()
var o readFromOp
o.Init(fd, buf)
n, err = iosrv.ExecIO(&o, fd.rdeadline_delta)
sa, _ = o.rsa.Sockaddr()
return
}
func (fd *netFD) Write(p []byte) (n int, err os.Error) {
// Write to network.
type writeOp struct {
bufOp
}
func (o *writeOp) Submit() (errno int) {
var d uint32
return syscall.WSASend(uint32(o.fd.sysfd), &o.buf, 1, &d, 0, &o.o, nil)
}
func (o *writeOp) Name() string {
return "WSASend"
}
func (fd *netFD) Write(buf []byte) (n int, err os.Error) {
if fd == nil {
return 0, os.EINVAL
}
......@@ -380,41 +387,32 @@ func (fd *netFD) Write(p []byte) (n int, err os.Error) {
if fd.sysfd == -1 {
return 0, os.EINVAL
}
// Submit send request.
var pckt ioPacket
pckt.c = fd.cw
pckt.w = newWSABuf(p)
var done uint32
var e int
if fd.wdeadline_delta > 0 {
a := &arg{f: write, fd: fd, pckt: &pckt, done: &done, c: make(chan int)}
ioChan <- a
e = <-a.c
} else {
e = syscall.WSASend(uint32(fd.sysfd), pckt.w, 1, &done, uint32(0), &pckt.o, nil)
}
switch e {
case 0:
// IO completed immediately, but we need to get our completion message anyway.
case syscall.ERROR_IO_PENDING:
// IO started, and we have to wait for it's completion.
default:
return 0, &OpError{"WSASend", fd.net, fd.laddr, os.Errno(e)}
}
// Wait for our request to complete.
r := waitPacket(fd, &pckt, 'w')
if r.errno != 0 {
err = &OpError{"WSASend", fd.net, fd.laddr, os.Errno(r.errno)}
}
n = int(r.qty)
return
var o writeOp
o.Init(fd, buf)
return iosrv.ExecIO(&o, fd.wdeadline_delta)
}
// WriteTo to network.
type writeToOp struct {
bufOp
sa syscall.Sockaddr
}
func (o *writeToOp) Submit() (errno int) {
var d uint32
return syscall.WSASendto(uint32(o.fd.sysfd), &o.buf, 1, &d, 0, o.sa, &o.o, nil)
}
func (o *writeToOp) Name() string {
return "WSASendto"
}
func (fd *netFD) WriteTo(p []byte, sa syscall.Sockaddr) (n int, err os.Error) {
func (fd *netFD) WriteTo(buf []byte, sa syscall.Sockaddr) (n int, err os.Error) {
if fd == nil {
return 0, os.EINVAL
}
if len(p) == 0 {
if len(buf) == 0 {
return 0, nil
}
fd.wio.Lock()
......@@ -424,34 +422,29 @@ func (fd *netFD) WriteTo(p []byte, sa syscall.Sockaddr) (n int, err os.Error) {
if fd.sysfd == -1 {
return 0, os.EINVAL
}
// Submit send request.
var pckt ioPacket
pckt.c = fd.cw
pckt.w = newWSABuf(p)
var done uint32
var e int
if fd.wdeadline_delta > 0 {
a := &arg{f: writeto, fd: fd, pckt: &pckt, done: &done, sa: &sa, c: make(chan int)}
ioChan <- a
e = <-a.c
} else {
e = syscall.WSASendto(uint32(fd.sysfd), pckt.w, 1, &done, 0, sa, &pckt.o, nil)
}
switch e {
case 0:
// IO completed immediately, but we need to get our completion message anyway.
case syscall.ERROR_IO_PENDING:
// IO started, and we have to wait for it's completion.
default:
return 0, &OpError{"WSASendTo", fd.net, fd.laddr, os.Errno(e)}
}
// Wait for our request to complete.
r := waitPacket(fd, &pckt, 'w')
if r.errno != 0 {
err = &OpError{"WSASendTo", fd.net, fd.laddr, os.Errno(r.errno)}
}
n = int(r.qty)
return
var o writeToOp
o.Init(fd, buf)
o.sa = sa
return iosrv.ExecIO(&o, fd.wdeadline_delta)
}
// Accept new network connections.
type acceptOp struct {
anOp
newsock int
attrs [2]syscall.RawSockaddrAny // space for local and remote address only
}
func (o *acceptOp) Submit() (errno int) {
var d uint32
l := uint32(unsafe.Sizeof(o.attrs[0]))
return syscall.AcceptEx(uint32(o.fd.sysfd), uint32(o.newsock),
(*byte)(unsafe.Pointer(&o.attrs[0])), 0, l, l, &d, &o.o)
}
func (o *acceptOp) Name() string {
return "AcceptEx"
}
func (fd *netFD) accept(toAddr func(syscall.Sockaddr) Addr) (nfd *netFD, err os.Error) {
......@@ -474,72 +467,40 @@ func (fd *netFD) accept(toAddr func(syscall.Sockaddr) Addr) (nfd *netFD, err os.
// Associate our new socket with IOCP.
onceStartServer.Do(startServer)
if _, e = syscall.CreateIoCompletionPort(int32(s), pollserver.iocp, 0, 0); e != 0 {
if _, e = syscall.CreateIoCompletionPort(int32(s), resultsrv.iocp, 0, 0); e != 0 {
return nil, &OpError{"CreateIoCompletionPort", fd.net, fd.laddr, os.Errno(e)}
}
// Submit accept request.
// Will use new unique channel here, because, unlike Read or Write,
// Accept is expected to be executed by many goroutines simultaniously.
var pckt ioPacket
pckt.c = make(chan *ioResult)
attrs, e := syscall.AcceptIOCP(fd.sysfd, s, &pckt.o)
switch e {
case 0:
// IO completed immediately, but we need to get our completion message anyway.
case syscall.ERROR_IO_PENDING:
// IO started, and we have to wait for it's completion.
default:
closesocket(s)
return nil, &OpError{"AcceptEx", fd.net, fd.laddr, os.Errno(e)}
}
// Wait for peer connection.
r := <-pckt.c
if r.errno != 0 {
var o acceptOp
o.Init(fd)
o.newsock = s
_, err = iosrv.ExecIO(&o, 0)
if err != nil {
closesocket(s)
return nil, &OpError{"AcceptEx", fd.net, fd.laddr, os.Errno(r.errno)}
return nil, err
}
// Inherit properties of the listening socket.
e = syscall.SetsockoptInt(s, syscall.SOL_SOCKET, syscall.SO_UPDATE_ACCEPT_CONTEXT, fd.sysfd)
if e != 0 {
closesocket(s)
return nil, &OpError{"Setsockopt", fd.net, fd.laddr, os.Errno(r.errno)}
return nil, err
}
// Get local and peer addr out of AcceptEx buffer.
lsa, rsa := syscall.GetAcceptIOCPSockaddrs(attrs)
// Create our netFD and return it for further use.
laddr := toAddr(lsa)
raddr := toAddr(rsa)
f := &netFD{
sysfd: s,
family: fd.family,
proto: fd.proto,
cr: make(chan *ioResult, 1),
cw: make(chan *ioResult, 1),
net: fd.net,
laddr: laddr,
raddr: raddr,
}
runtime.SetFinalizer(f, (*netFD).Close)
return f, nil
}
func closesocket(s int) (errno int) {
return syscall.Closesocket(int32(s))
var lrsa, rrsa *syscall.RawSockaddrAny
var llen, rlen int32
l := uint32(unsafe.Sizeof(*lrsa))
syscall.GetAcceptExSockaddrs((*byte)(unsafe.Pointer(&o.attrs[0])),
0, l, l, &lrsa, &llen, &rrsa, &rlen)
lsa, _ := lrsa.Sockaddr()
rsa, _ := rrsa.Sockaddr()
return allocFD(s, fd.family, fd.proto, fd.net, toAddr(lsa), toAddr(rsa)), nil
}
func init() {
var d syscall.WSAData
e := syscall.WSAStartup(uint32(0x101), &d)
if e != 0 {
initErr = os.NewSyscallError("WSAStartup", e)
}
}
// Not implemeted functions.
func (fd *netFD) dup() (f *os.File, err os.Error) {
// TODO: Implement this
......
src/pkg/syscall/syscall_windows.go
View file @ 0e7995c0
......@@ -653,26 +653,6 @@ func Shutdown(fd, how int) (errno int) {
return int(shutdown(int32(fd), int32(how)))
}
func AcceptIOCP(iocpfd, fd int, o *Overlapped) (attrs *byte, errno int) {
// Will ask for local and remote address only.
rsa := make([]RawSockaddrAny, 2)
attrs = (*byte)(unsafe.Pointer(&rsa[0]))
alen := uint32(unsafe.Sizeof(rsa[0]))
var done uint32
errno = AcceptEx(uint32(iocpfd), uint32(fd), attrs, 0, alen, alen, &done, o)
return
}
func GetAcceptIOCPSockaddrs(attrs *byte) (lsa, rsa Sockaddr) {
var lrsa, rrsa *RawSockaddrAny
var llen, rlen int32
alen := uint32(unsafe.Sizeof(*lrsa))
GetAcceptExSockaddrs(attrs, 0, alen, alen, &lrsa, &llen, &rrsa, &rlen)
lsa, _ = lrsa.Sockaddr()
rsa, _ = rrsa.Sockaddr()
return
}
func WSASendto(s uint32, bufs *WSABuf, bufcnt uint32, sent *uint32, flags uint32, to Sockaddr, overlapped *Overlapped, croutine *byte) (errno int) {
rsa, l, err := to.sockaddr()
if err != 0 {
......
src/pkg/syscall/ztypes_windows_386.go
View file @ 0e7995c0
......@@ -28,6 +28,7 @@ const (
ERROR_PROC_NOT_FOUND = 127
ERROR_ENVVAR_NOT_FOUND = 203
ERROR_DIRECTORY = 267
ERROR_OPERATION_ABORTED = 995
ERROR_IO_PENDING = 997
)
......
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