Ian: Thanks for your explanation.
On Saturday, February 23, 2019 at 1:13:04 AM UTC+8, Ian Denhardt wrote: > > In the new example, goroutine 2 should get pre-empted at time.Sleep. > goroutine 1 may hog a CPU however. There's an open issue about this, > which is being worked on. > > https://github.com/golang/go/issues/10958 > > I think it's always been the intent that from the programmer's > perspective goroutines don't block one another at all; they're just > like threads but cheaper -- and indeed most of the time you can write > code that acts like that's true and never see a problem -- but the > reality of the implementation is that right now it is possible to > tight-loop and block other goroutines. > > -Ian > > Quoting Jingguo Yao (2019-02-22 03:31:55) > > Yes, my fault. Thanks for pointing it out.� > > What happens if I remove the fmt.Printf function calls to have the > > following code: > > package main > > import ( > > "fmt" > > "runtime" > > "time" > > ) > > func main() { > > count := runtime.GOMAXPROCS(1) > > fmt.Printf("GOMAXPROCS: %d\n", count) > > � // goroutine 1 > > go func() { > > for { > > } > > }() > > � // goroutine 2 > > go func() { > > for { > > } > > }() > > time.Sleep(10 * time.Second) > > } > > Can goroutine 1 or goroutine 2 be preempted? If yes, by which > > mechanism? > > On Friday, February 22, 2019 at 4:20:12 PM UTC+8, Ian Denhardt wrote: > > > > Quoting Jingguo Yao (2019-02-22 03:17:33) > > > � � Since both goroutines do not make any function calls > > fmt.Printf is a function. > > > > -- > > 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 [1]golang-nuts...@googlegroups.com <javascript:>. > > For more options, visit [2]https://groups.google.com/d/optout. > > > > Verweise > > > > 1. mailto:golang-nuts+unsubscr...@googlegroups.com <javascript:> > > 2. 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.
