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 (fd *netFD) Write(p []byte) (n int, err os.Error) {
if fd == nil {
return 0, os.EINVAL
}
fd.wio.Lock()
defer fd.wio.Unlock()
fd.incref()
defer fd.decref()
if fd.sysfile == nil {
return 0, os.EINVAL
}
// Submit send request.
var pckt ioPacket
pckt.c = fd.cw
var done uint32
e := syscall.WSASend(uint32(fd.sysfd), newWSABuf(p), 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 := <-pckt.c
if r.errno != 0 {
err = &OpError{"WSASend", fd.net, fd.laddr, os.Errno(r.errno)}
}
n = int(r.qty)
return
}
func (fd *netFD) Write(buf []byte) (int, error) {
if err := fd.writeLock(); err != nil {
return 0, err
}
defer fd.writeUnlock()
if raceenabled {
raceReleaseMerge(unsafe.Pointer(&ioSync))
}
o := &fd.wop
o.InitBuf(buf)
return wsrv.ExecIO(o, "WSASend", func(o *operation) error {
return syscall.WSASend(o.fd.sysfd, &o.buf, 1, &o.qty, 0, &o.o, nil)
})
}
func (fd *netFD) Write(buf []byte) (int, error) {
if err := fd.writeLock(); err != nil {
return 0, err
}
defer fd.writeUnlock()
if race.Enabled {
race.ReleaseMerge(unsafe.Pointer(&ioSync))
}
o := &fd.wop
o.InitBuf(buf)
n, err := wsrv.ExecIO(o, "WSASend", func(o *operation) error {
return syscall.WSASend(o.fd.sysfd, &o.buf, 1, &o.qty, 0, &o.o, nil)
})
if _, ok := err.(syscall.Errno); ok {
err = os.NewSyscallError("wsasend", err)
}
return n, err
}
func (fd *netFD) Write(p []byte) (n int, err os.Error) {
if fd == nil {
return 0, os.EINVAL
}
fd.wio.Lock()
defer fd.wio.Unlock()
fd.incref()
defer fd.decref()
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
}
func (fd *netFD) writeBuffers(buf *Buffers) (int64, error) {
if len(*buf) == 0 {
return 0, nil
}
if err := fd.writeLock(); err != nil {
return 0, err
}
defer fd.writeUnlock()
if race.Enabled {
race.ReleaseMerge(unsafe.Pointer(&ioSync))
}
o := &fd.wop
o.InitBufs(buf)
n, err := wsrv.ExecIO(o, "WSASend", func(o *operation) error {
return syscall.WSASend(o.fd.sysfd, &o.bufs[0], uint32(len(*buf)), &o.qty, 0, &o.o, nil)
})
o.ClearBufs()
if _, ok := err.(syscall.Errno); ok {
err = os.NewSyscallError("wsasend", err)
}
testHookDidWritev(n)
buf.consume(int64(n))
return int64(n), err
}
func (o *writeOp) Submit() error {
var d uint32
return syscall.WSASend(o.fd.sysfd, &o.buf, 1, &d, 0, &o.o, nil)
}
func (o *writeOp) Submit() (errno int) {
var d uint32
return syscall.WSASend(uint32(o.fd.sysfd), &o.buf, 1, &d, 0, &o.o, nil)
}