Nothing about using the network requires new goroutine creation. I wouldn't expect Dial to create new goroutines, except perhaps temporarily during DNS lookup or something.
On Mon, Jun 20, 2016 at 6:38 PM Manohar Kumar <forwarding...@gmail.com> wrote: > > > On Monday, June 20, 2016 at 9:31:08 AM UTC-7, Ian Lance Taylor wrote: > >> On Sat, Jun 18, 2016 at 10:17 PM, Manohar Kumar <forwar...@gmail.com> >> wrote: >> > >> > Is it possible that a net.ListenTCP or ListenUDP call can result in >> new go >> > routine/OS thread creation ? I guess not all system calls result in a >> new go >> > routine (and OS thread if necessary) creation. But ListenTCP & UDP does >> many >> > things underneath and its not clear if it can lead to new go routine >> > creation. >> >> ListenTCP and ListenUDP will not create new goroutines or threads. >> But those calls just create new listeners; you probably meant to ask >> about the AcceptTCP and ReadFrom/WriteTo methods. Those methods will >> not normally create new goroutines. However, they may block, and that >> may cause the Go runtime to create a new thread. >> > > Thanks. How about Dial() ? Since Dial to a TCP destination requires a > connection to be established I think it can lead to new go routine > creation. Can that happen for Dial to an UDP destination as well (which > shouldn't trigger any network transaction)? > > This code runs on a root network namespace and some other child network > namespaces. Its not a desirable behavior to have new OS created while its > executing in the child namespaces. > > -Manohar. > > >> > I am mainly interested in Linux and have to make these calls in a part >> of >> > the code where new OS thread creation isn't desirable. Please note that >> > changing that aspect of the design itself is not an option for me. >> >> The Go runtime is free to create new OS threads at any time. You can >> not reasonably use Go under the restrictions you describe. >> >> Ian >> > -- > You received this message because you are subscribed to the Google Groups > "golang-nuts" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to golang-nuts+unsubscr...@googlegroups.com. > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "golang-nuts" group. To unsubscribe from this group and stop receiving emails from it, send an email to golang-nuts+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
