I understand that Goroutines are multiplexed onto multiple OS threads so if one should block, such as while waiting for I/O, others continue to run, but is there any way to know ahead of time how many threads I would spawn if I were to create n goroutines? for example, if we call the funtion below below would we know how many (or the ma...
I always read about the horrible thing that "goto" is. But, todaym reading about the google programming language "Go" http://golang.org/ and i see that it suports Coroutines (Goroutines). The question is: Coroutine == GoTo Or Coroutine != GoTo? Why? ...
All the examples I've seen so far involve blocking to get the result (via the <-chan operator). My current approach involves passing a pointer to a struct: type goresult struct { result resultType; finished bool; } which the goroutine writes upon completion. Then it's a simple matter of checking finished whenever convenient. ...
Does anyone know approximately what the minimum work size is needed in order for a goroutine to be beneficial (assuming that there are free cores for the work to be offloaded to)? ...
I've only just recently learned about Google's programming language, Go. I've been intrigued by its offered support for concurrency, and set out to learn more about it. However, I went looking to see how Go implemented a particular feature of concurrency, and so far I haven't seen any evidence at all that this feature is there at all. ...
We've been talking about threads in my operating system class a lot lately and one question has come to my mind. Since Go, (and Java) uses User-space thread instead of kernel threads, doesn't that mean that you can't effectively take advantages of multiple cores since the OS only allocates CPU time to the process and not the threads th...
Hi, I've been looking at Go's goroutines lately and thought it would be nice to have something similar in Java. As far as I've searched the common way to parallelize a method call is to do something like: final String x = "somethingelse"; new Thread(new Runnable() { public void run() { x.matches("something"); ...
Is there a way to ensure that a goroutine will run only in a specific OS thread? For example, when GUI operations must run in the GUI thread, but there might be multiple goroutines running GUI code. GOMAXPROCS(1) does the job technically, but that defeats the purpose of multithreading. LockOSThread() works too, but that prevents any ot...
Is the Go map type thread safe? I have a program that has many goroutines reading and writing to a map type. If I need to implement a protection mechanism, what's the best way to do it? ...
How to get a concurrent method? type test struct { foo uint8 bar uint8 } func NewTest(arg1 string) (*test, os.Error) {...} func (self *test) Get(str string) ([]byte, os.Error) {...} I think that all code for method Get() should be put inner of go func(), and then to use a channel. func (self *test) Get(str string) ([]byte...
So, right now, I just pass a pointer to a Queue object (implementation doesn't really matter) and call queue.add(result) at the end of goroutines that should add things to the queue. I need that same sort of functionality—and of course doing a loop checking completion with the comma ok syntax is unacceptable in terms of performance vers...
Channels combine communication—the exchange of a value—with synchronization—guaranteeing that two calculations (goroutines) are in a known state. How is it possible to use the channels in Google Go to perform the functionality of mutex? package main import "sync" var global int = 0 var m sync.Mutex func thread1(){ m.Lock() g...