If we have this code : for {

Question

If we have this code : for {

go func() {
log.Println("something")
}()
}

can we understand that goroutine in previous loop step done its job ??
in other words can we synchronize these goroutines that are in a loop ??

0

09.11.2021

12 ответов

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Roman Sharkov

what do you mean by synchronize? Make them be called serially? If so, then why do you need those goroutines in the first place?

0

09.11.2021

Masoud Автор вопроса

Roman Sharkov
no. This code will ultimately crash your system. Y...

not this code exactly , imagine the loop is finite

0

09.11.2021

Masoud Автор вопроса

Roman Sharkov
what do you mean by synchronize? Make them be call...

yeah serially , my project is a webrtc sfu and in a loop I will send rtp packets to clients and after that I will write them to a file in disk but this i/o task is time consuming , I don't want that sending rtp packets directly to clients have lags and delay because of this I want to this saving to disk task be run on other goroutine(s)

0

09.11.2021

Roman Sharkov

Masoud
yeah serially , my project is a webrtc sfu and in ...

is a goroutine pool what you're looking for? or do you want to execute N simultaneous tasks and wait for all of them to finish?

0

09.11.2021

Masoud Автор вопроса

Roman Sharkov
is a goroutine pool what you're looking for? or do...

emm...I don't know exactly I don't think goroutine pool help me and sync.waitGroup also wont help me

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09.11.2021

Roman Sharkov

Masoud
emm...I don't know exactly I don't think goroutine...

I still don't understand your problem. Why do you want goroutines to execute serially one after another? Can't you just do that in 1 goroutine?

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09.11.2021

Roman Sharkov

Masoud
yeah serially , my project is a webrtc sfu and in ...

so you have N connections you want to write 1 packet to each of the N connections and resume once all of them are written, right?

0

09.11.2021

Masoud Автор вопроса

Roman Sharkov
I still don't understand your problem. Why do you ...

I think saving incoming video packets (parts) in disk should be serially right ?? :)

0

09.11.2021

Masoud Автор вопроса

Roman Sharkov
so you have N connections you want to write 1 pack...

no not resume , first part of what you said is right but this part is not the problem in that loop that I said after I sent for example packet X to clients then I will append that to recording file but this task is time consuming (assume that we don't have nvme disk :) )

0

09.11.2021

Roman Sharkov

Masoud
no not resume , first part of what you said is rig...

var packet []byte for _, c := range connections { c.Send(packet) } file.Write(packet) is this your business logic (simplified)?

0

09.11.2021

Masoud Автор вопроса

Roman Sharkov
var packet []byte for _, c := range connections { ...

here is the code , sorry

0

09.11.2021