func createUnixSocket(addr *net.UnixAddr) (l net.Listener, err error) {
l, err = net.ListenUnix("unix", addr)
if err != nil {
return
}
// TODO(lcooper): Not sure if this sequence is completely safe.
// It would be better if we could get the underlying FD of the socket
// and stat() + chmod() that instead.
fi, err := os.Stat(addr.String())
if err != nil {
return
}
// NOTE(lcooper): This only ensures g+w other then on Linux,
// BSD systems only use parent directory permissions.
// See http://stackoverflow.com/questions/5977556 .
err = os.Chmod(addr.String(), fi.Mode()|0060)
return
}
//Threaded, Asynchronous approach to sorting list.
//for the given rpc client, send a portion of the given list list1
//to said client to sort and return.
func SortClient(m1 *[]int, l1 *[]int, list1 *[]int, val string, i int, clientSize int, c chan []int) {
l2 := *l1
m := *m1
// list := *list1
defer close(c)
var err error
checkError(err)
client := new(rpc.Client)
if *protocolFlag == "tcp" {
// fmt.Println("Attempting connection to tcp:", val)
client, err = rpc.DialHTTP("tcp", val)
} else {
var unixAddr *net.UnixAddr
unixAddr, err = net.ResolveUnixAddr("unix", val)
fmt.Println("Attempting connection to socket:", val)
fmt.Println(unixAddr)
// client, err = rpc.Dial("unix", unixAddr.String())
c2, err := net.Dial("unix", unixAddr.String())
checkError(err)
fmt.Println("Successfully Connected to Unix Port", c2)
}
if err != nil {
log.Fatal("dialing:", err)
}
//compensates for remainders when the
//len(m)%(# of clients) != 0
remainder := len(m) % clientSize
start, end := 0, 0
if remainder > 0 && i < remainder {
start, end = (len(m)/(clientSize))*i+i, (len(m)/(clientSize))*(i+1)+i
} else {
start, end = (len(m)/(clientSize))*i, (len(m)/(clientSize))*(i+1)-1
start, end = start+remainder, end+remainder
}
fmt.Println("Sorting List", start, end)
l2 = make([]int, end-start+1)
for j := start; j < end; j++ {
l2[j-start] = m[j]
}
s := ""
err = client.Call("Util.SetThreads", 4, &s)
fmt.Println(s)
r := new(utility.Reply)
err = client.Call("Util.Sort", l2, &r)
fmt.Println("Client Returned ", len(r.Data))
//
// list = make([]int, len(r.Data))
//
for j, val := range r.Data {
//? list[j] = val
l2[j] = val
}
if err != nil {
log.Fatal("util error error:", err)
}
client.Close()
c <- l2
}