Re: Run Io coroutines in background simultaneous to using Io> prompt in foreground?

>
>
> Thanks that was a big help but it wasn't quite the solution. I was  
> able to make it run a background process simultaneous to generating  
> my own prompt. But that only solves half my problem: "EditLine  
> readLine" is a blocking call, so it still halts other coroutines  
> while waiting at the "fake Io>" prompt. (Because you can't yield  
> between keypresses.) So it still only executes the background loops  
> once per every time I hit the "return" key on a command in the prompt.
>
> I'm thinking maybe I need something like:
>
> createThread("loop that does readLine for FakeIo> prompt")
> @@backgroundCoroutine("do stuff in a loop that yields at the end")
>
> loop(
> check for new command from other thread
> yield if no new command
> doString() if there is a command
> )
>
> But how do I get the string data out of the separate VM on the  
> thread that's displaying the FakeIo> prompt and into the original VM  
> that has the backgroundCoroutines and the doString loop? Shared  
> memory? Pipes? Send it to localhost via TCP/IP through a BSD socket??
>
> For the sake of completeness, here's the test code I've got so far:  
> (The idea is the background coroutine increments n every second,  
> while the foreground prompt can change or print n if you type the  
> right command. The fact that the background coroutine picks up on  
> the change and begins incrementing the new value of n proves the  
> foreground prompt changed a variable in the background coroutine.)
>
> n := 1
>
> doBackground := method(
> loop("N is " print; n println; n = n + 1; wait(1))
> )
>
> doPrompt := method(
> s := ""; loop(println; s = EditLine readLine("FakeIo>");  
> doString(s); yield)
> )
>
> @@doBackground
> doPrompt
>
> --- In iolanguage@..., Steve Dekorte <steve@...> wrote:
> >
> >
> > On 2009-06-07, at 9:18 PM, dennisf486 wrote:
> > > With the prompt presented by the Io executable, if I type  
> something
> > > the prompt goes away until it is done, even if I type something  
> like
> > > "o1 @test" to launch a coroutine. Is this a fundamental limitation
> > > of Io (can't enter new commands while coroutines are running)? I
> > > can think of several approaches; which, if any, are right?
> >
> > The code that presents the user with the prompt and receives the  
> input
> > line can just call doString(theInputString) and I think it should  
> have
> > the behavior you are looking for.
> >
>
>
>
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